2015年10月15日星期四

torque screwdriver main features

Our company has introduced a precision torque screwdriver, having earlier set torque screwdriver preset function, its main features are:
1. The force value is displayed: the scale and the sub scale of the ring on the upper sleeves comprehensive instruction torque value reading aspect, accurate, high-precision
2. The right and left reversed, clockwise and counterclockwise twist
3. Reasonable design, hand-held operation, prolonged use
4. Simple operation, set the desired value, the same way anyone can operate using
5. Enclosed Phillips and flathead screwdriver

2015年10月12日星期一

The Use notes of hydraulic jack

Hydraulic jacks Caution:
1: hydraulic jack at the lifting operation, to select the appropriate tonnage hydraulic jacks: the carrying capacity can not overload the carrying capacity of hydraulic jacks choose must be greater than 1.2 times the weight of gravity; hydraulic jack minimum height appropriate, in order to facilitate removal, use The minimum height of the hydraulic jacks should headroom weights at the bottom urging adapt the process when landing pad support heavy sleeper, hydraulic jack lifting height greater than the thickness of the sleeper of sleepers and deformation.
2: If you use multiple Pancake Lock Nut jacks lifting the same equipment, the same model should be used hydraulic jacks and hydraulic jacks each rated lifting capacity of the device and not less than the assumed 1.5 times gravity.
3: hydraulic jacks should be wiped clean prior to use, and should check the parts are flexible, without injury, when there is a load should not remove the quick connector, to avoid accidents and damage to components.
4: Before using hydraulic jacks should be placed flat, not tilted to pad the bottom level, to prevent ground sinking or partial load shift tilt or tip over leaving the hydraulic jack, the jack at the bottom of the pad can be tough in the hydraulic pillow surgery or steel to expand pressure area to prevent slip and fall or accident; do not use wood or steel with oil as a liner, when the force to prevent slipping accidents; weight is lifting position must be safe, solid site to preventing damage to the device.

2015年10月9日星期五

Mechanical properties synchro flange separator

Flange separator is the separation of large industrial machinery equipment, divided into one hydraulic flange separator and the split flange separator. Mainly used for pipeline maintenance, replacement pipeline construction, testing and flanges, maintenance pads, pressure vessel, cylinder head open, power plants, bearing removal, electricity and oil drilling, rotor removal, offshore platforms, lifting work, shipbuilding, industrial equipment, horizontal movement of the workpiece and other industry sectors. Mechanical synchro flange separator characteristics are as follows:
1. Suitable for repair, overhaul, testing and valve replacement applications.
2. The overall concept of separation: no friction, smooth motion parallel to eliminate the risk of damage and separation wedge flange damaged.
3. Unique interlocking wedge design of the first stage without bending without slipping hazard.
4. Insert opening required size only 6mm.
5. The level design so that each row cantilever frame steps Jieke bear full load.
6. fewer moving parts, durable, easy maintenance.

2015年10月6日星期二

Electric hydraulic pump station features

Electric hydraulic pump station features:
1.spray painted surface, anti-corrosion, strong tolerance ability.
2.Compact and lightweight design, weight light to shift transport.
3.The two-stage pump design, low pressure high flow, fast motion when the actuator load, high and low voltage automatic switching.
4.The high-pressure flow, for supporting the use of large tonnage hydraulic jack.
5.The standard adjustable pressure valve, easy to re-calibrate the work pressure and prevent pressure overload.
6.Standard motor starters, overload and leakage protection.
7.durable valve for single-acting and double-acting jack, the choice of solenoid valve can be remote operation; PLC control options.

2015年10月3日星期六

How electric hydraulic pump works

Electric hydraulic pumps are relying on the principle of sealed volume changes to the work, it is generally referred to as displacement pump plunger mounted in the cylinder block forming a sealed volume under the action of the spring plunger is always pressed against the eccentric wheel. Prime mover driven eccentric rotation of the plunger reciprocates, so that the size of the sealed volume occurs periodically alternating. When the plunger from small to large, a partial vacuum is formed, so that the oil tank at atmospheric pressure effect, the suction tube to open the top one-way valve into the oil chamber and achieve suction; conversely, when the plunger from big-hour, suction chamber full of oil will top one-way valve opening pressure of the oil flowing into the system implementation. Such pump on the prime mover input mechanical energy into fluid pressure energy, the prime mover driven eccentric constant rotation, the hydraulic pump on the suction and pressure oil continuously.

2015年9月30日星期三

How torque multiplier works

Torque multiplier is a way to improve the torque device for the operator, it belongs to a torque calibrator, which is composed of a circle or a combination of planetary gears in various combinations of sectors to boost output gear rotates, each class gear torque magnification factor of 5, in a planetary gear system, torque is input and output via the sun gear. Three or four planetary gears and the sun gear is rotated in conjunction. Multiplier within the housing and around the inner circumference of the planetary gear type gear engaged, but the relative rotation of the inner planetary gears, the rotational direction is reversed. Reaction arm prevents the gear integral with the circumferential housing rotation, leaving the planetary gear rotating about a central gear to drive the drive square head rotation, and thus the output torque. If you do not you can not output torque reaction arm.

2015年9月27日星期日

Preset torque screwdriver Features

Preset torque screwdriver is the development of suitable professional testing in the automotive, motorcycle, mechanical manufacturing, electronics and other industries new precision torque screwdriver
1, the force value is displayed: the comprehensive indicator scale torque value scale and deputy of the ring on the sleeves on, easy reading, accurate, high precision.
2, may be about to reverse: This product can be clockwise; also be rotated counterclockwise.
3, reasonable design: hand-held operation, prolonged use, it will not tired.
4, the operation is simple: set the desired value, in the same way anyone operational use.
5, containing a slotted screwdriver with a cross and head of each one, allowing customers to follow the items they want to replace the measuring head screwdriver.

2015年9月24日星期四

Instructions of electric hydraulic jack

After the electric hydraulic jack lifting heavy objects, should be timely and firmly supports the weight support to prohibit 1000ton hydraulic jacks or EHV large tonnage electric jack as the support material to use. For a long time support weight please use the Pancake Lock Nut Cylinder, in addition to the right to enlarge the tonnage An electric jack, but should be used when more top diverter valve For a few electric hydraulic jack at the same time lifting, and each load large tonnage electric jack .It should be balanced to keep the lifting speed synchronization. Colleagues must consider possible subsidence due to the weight of the case of uneven ground, to prevent heavy lifting is a tilt and dangerous.

2015年9月20日星期日

Torque tester application

Torque tester is used for torsional performance tightness test sample and its sample of some components to determine whether the sample meets the torque requirement. Torque Tester longest using torque wrench tester, it is a tool for checking various torque wrench tester. The instrument uses a single-chip control technology by high-precision torque sensors and force stents and other common components. The test precision, stable performance, feature-rich, easy to operate. The instrument in leading-edge technology, the indicators reached the domestic first-class level in the industry, is a highly cost-effective test equipment, has been widely used in electric power, light industry, machinery, engines, internal combustion engines, electric vehicles, motorcycles, cars, ships , aircraft and other manufacturing industries and measurement testing departments.

2015年9月16日星期三

How to choose a torque wrench

A torque wrench is a wrench, generally divided into two categories: electric torque wrench and manual torque wrench. Its main feature is that you can set the torque, and the torque is adjustable.It is now more widely used electric torque wrench, which handle is generated when fatigue optimized ergonomic design, comfortable grip, greatly reducing the high intensity operations, according to the torque requirements for the use of the lock nut, when the precise set torque value reported hearing and a clear sound, and the handle can feel a slight vibration, easy to operate, saving time and effort.

2015年9月12日星期六

Scope - Flange Separator

Flange separator is the separation of large industrial machinery equipment, divided into one hydraulic flange separator and the split flange separator. Mainly used for pipeline maintenance, replacement pipeline construction, testing and flanges, maintenance pads, pressure vessel, cylinder head open, power plants, bearing removal, electricity and oil drilling, rotor removal, offshore platforms, lifting work, shipbuilding, industrial equipment, horizontal movement of the workpiece and other industry sectors. Use it with the bolt tensioning tool is completely the opposite.

2015年9月8日星期二

Hydraulic torque wrenches classification and distinction

Hydraulic torque wrench into the drive hydraulic torque wrench and hollow hydraulic torque wrenches. Drive hydraulic torque wrenches are driven by the drive shaft to achieve the appropriate size sleeve nut preload, under circumstances permitted as long as the torque range, according to replace the corresponding sleeve high strength bolts to complete different specifications for general purpose hydraulic wrench , wider scope. Hollow hydraulic torque wrench is equipped with a transition sleeve used only within the scope of its comparative bolt specifications required to use this hydraulic torque wrench to achieve the conditions, which is hollow hydraulic torque wrench has become a special customized hydraulic torque wrenches because it uses conditions, generally more screw sticking out of a long, relatively small spatial extent, double nut, bolt spacing is too small, nut and equipment wall is too small, or some specific sectors of the difficult working conditions.

2015年9月4日星期五

Hydraulic cylinder works

The hydraulic cylinder is a hydraulic energy into mechanical energy, reciprocating motion to do (or swing movement) of one hydraulic tools. Use in hydraulic systems hydraulic cylinder drive mechanism has a certain quality, with great kinetic energy when the hydraulic cylinder is moved to the stroke end, the Failing deceleration, hydraulic cylinder piston and cylinder head to mechanical impact, an impact, noise, there is destructive. To mitigate and prevent such harm occurs, it can be provided in the hydraulic circuit deceleration device or in the cylinder equipped with cushioning devices.

2015年8月31日星期一

The cautions of the torque wrench calibration tool

The torque wrench calibration tool for high precision products, for this, please note:
1. Do not strongly in the use of impact;
2. Absolutely cannot be used as a hammer, tap on a workpiece;
3. Spanner alarm do not continue to work after;
4. Before use, please check if the arrow on the wrench with power works in the same direction, if not consistent, please install the rotate for 180 degrees to wrench;
5. Please remove the wrench parts, lest destroy the precision influence use;
6. torque wrench testers, after use, should be placed torque value to zero, to keep the wrench precision, prolong service life;

2015年8月27日星期四

The use of the Square Drive Hydraulic Torque Wrenches

A. the lock handle counterclockwise, loosen the adjusting wheel.
B. turn the adjustment wheel, causes the main scale and vice scale (round adjustment scale) value is equal to the sum of what you need to set torque value.
C. after torsion value setting, spin clockwise to lock tight grip, torque value after work.
2. Spanner Fang Sun set into the corresponding size of the sleeve;
3. The sleeve set into the nut or bolt head;
4. Uniform power works clockwise;
5. When they hear "clicking" sound, or feel wrench has unloading force feeling, I have to set hydraulic torque wrench chart value;
6. When you long screw bolt or tubing type of nut, sleeve, without zai-shallow pits method work at this point, the need to replace a verbal;
A. press positioning pin, along the direction of force applying, wrench head is desirable.
B. will choose corresponding size of the open after oral insert the wrench screw rotation, can make catapults dowel pin holes in a wrench head positioning.

2015年8月23日星期日

dial indicator torque wrenches

dial indicator torque wrenches has the preset torque value and sound device. Use, first set a maximum torque, torque reaches the set value when, Mechanical Torque Wrenches "tower" noise or wrench joint bending Angle, at the same time companion has apparent handle vibration, it's representatives have tighten don't strength again, prompt to complete the work. After lifting force, wrench the relevant parts can be reset automatically.

2015年8月19日星期三

The rules for using a Hydraulic Nut Splitters

1. Measurement, hand to grasp the handle range, along the direction perpendicular to the Hydraulic Nut Splitters, strength slowly, until hear the sound of the torque wrench issued a "tower", torque wrench has reaches the preset torque value, artifacts have strength, then we should timely lifting force, so as not to damage the other parts. According to the national standard in the process of applying, instrument operation specification, about its verticality deviation should not be more than 10 degrees. The horizontal deviation shall not be more than 3 degrees from top to bottom, the operator shall guarantee that the up and down or so in the process of use force application scope not more than 15 degrees;
2. In order not to make the deviation of measurement results for the horizontal and vertical direction and effect, when measured, precision torque screwdriver should be applied on the strength of end of a vertical downward strength, stability and then manually add some force, such use value more accurate.

2015年8月15日星期六

dial indicator torque wrenches matters needing attention

dial indicator torque wrenches for high precision products, for this, please note:
1. Do not strongly in the use of impact;
2. Absolutely cannot be used as a hammer, tap on a workpiece;
3. Spanner alarm do not continue to work after;
4. Before use, please check if the arrow on the wrench with power works in the same direction, if not consistent, please install the rotate for 180 degrees to Mechanical Torque Wrenches;
5. Please remove the wrench parts, lest destroy the precision influence use;
6. Preset torque wrench, after use, should be placed torque value to zero, to keep the wrench precision, prolong service life;扭矩起子

2015年8月11日星期二

The use of the precision torque screwdriver

1. Set the required precision torque screwdriver:
The required torque can be set through the shaft tube on the scale, the zero graduation of labelled vice ring at the center of the cylinder and then clockwise rotation axis cylinder, in order to increase the reading, reach the required torque value, stop.
2. The flange alignment tool correctly using:
Preset torque screwdriver after setting can be through the adapter connected to all kinds of fasteners, clockwise turn, fastening torque measurement. Turn clockwise to fastening torque measurement. When reach the set value from "click, click, click..." The sound. Preset torque screwdriver once set can be used repeatedly under the same value, until it is need to set another torque value.液压破切器

2015年8月7日星期五

One-piece hydraulic flange spreader

hydraulic flange spreader is put 15 tons, it - 150 - d maximum separation is put 2 * 15 tons
Low minimum separation clearance only 6 mm
The measure of the separation of low of 65 mm
Low radius 150 mm arc steps can effectively further close to the flange, make each step can bear larger load
Forged alloy steel separation step, longer life
Low light reinforced plastic handle design, easy to carry
Low within the unique lock structure to ensure the Hydraulic Nut Splitters of pressed flange, when I opened and not excessive expansion, automatically return when closed
Tubing unibody design, no connection, it is more convenient to use中空液压扳手

2015年8月3日星期一

The benefits of hydraulic flange spreaders

1, hydraulic flange spreaders, single operation, apply to narrow space and aerial work
2, portable, reduce the labor intensity, wide applicable scope
3, wide applicable range, convenient, safety and efficiency
4, electromagnetic valve electric pumps improve the service life
5, expand the scope of use, to prevent damage the flange gasket法兰分离器

2015年7月30日星期四

The advantages of hydraulic flange spreaders

1, hydraulic flange spreaders and the strong light
2, increase the separation of wedge block, it can reduce the inserting depth of the flange alignment tools
3, can be used as jack
4, to overcome the space constraints
5, at the same time of separation, prevent dislocation of the flange
6, no friction, parallel, smooth movement, not the flange damage
7, mechanical, hydraulic two options法兰分离器

2015年7月8日星期三

Common faults Square Drive Hydraulic Torque Wrenches include abnormal wear and tear, abnormal noise of camshaft and fracture

Common faults Square Drive Hydraulic Torque Wrenches include abnormal wear and tear, abnormal noise of camshaft and fracture, abnormal sound and are often the first symptoms of abnormal wear before a fracture occurs.
(1) the end of the camshaft is located in the engine lubrication system, therefore lubrication is not so optimistic.If the oil pump for long time and other reasons for the oil pressure is low, road blockage caused by lubricating oil or lubricating oil cannot reach the camshaft, or bearing cap bolts tightening torque caused by excessive oil from entering the camshaft clearance will result in abnormal wear of the cam shaft.
(2) abnormal wear will cause the camshaft and camshaft bearings increase the space between, axial displacement occurs when the camshaft movement, resulting in abnormal noise.Abnormal wear or cause-driven cam gap increases with hydraulic tappets, 
HighReach torque tools will impact when combined with hydraulic tappet, resulting in abnormal noise.
(3) the camshaft will sometimes appear to break a serious fault, common causes of hydraulic tappet broken or badly worn, severe lubrication, poor quality of camshaft and camshaft timing gear breakdowns.
(4) in some cases, camshaft failures is human-caused, especially maintenance disassembly of the engine the camshaft without properly.For example, when removing the camshaft bearing cap with a hammer strength tap or use a screwdriver to pry, or install a bearing cap to misplace the bearing cover and housing do not match, or bearing cap bolts tightening torque is too large.

2015年6月30日星期二

Wrench conversion "Torque "in physics should be called the" torque "and" torque "

Wrench conversion "high strength bolt torque coefficient calibrator "in physics should be called the" torque "and" torque "is the subject and objects rotating tangential role in the direction of the torque generated when, as a result of incorrectly relay an erroneous message, everyone says" torque ".
Short torque = force multiplied by the arm.To cite an example, arm (the wrench), 1M, 100N force applied, torque is 100N.m。
screw driven loading calibrators concepts from elementary school "leveraged" means, the definition is "on the forces in the vertical direction and the distance from the center of rotation."
International common metric unit for Newton.M N.M, divided by the acceleration due to gravity after the 9.8M/sec2 unit can be converted to kilograms force people familiar with.M kgf.M or kilograms force.Cm kgfNaN.Imperial units to points.Ft lb.FT, converting to the metric system, as long as the lb.Digital divide by 7.22 ft.Following are specific torque units and conversions:
The face of the global recession, 2008 global shipbuilding market shrinking dramatically.However China's shipbuilding industry's profits are still growing!Benefit from technology, efficiency and development, China's shipbuilding industry goal.

According to Government ship technology development "Eleven-Five" planning platform for of deployment, for active response Shanghai Municipal Government support high-tech industry, focus development marine engineering equipment, industry of series major initiatives, the ship exhibition hosted units guest national about ministries led, and both at home and abroad senior experts, and important user units led participating speech, Yu on July 23, 2009 to 24th of peak Forum Shang on China shipbuilding and marine engineering development of features, and status and trend;The latest naval architecture and marine engineering technology, and the future needs of the market published opinions.
Meanwhile, from July 23 to July 25, World Trade Centre held a 2009 China International Marine

2015年6月25日星期四

Wrench use

dial torque wrenches can be tight at the beginning and end, and its use is regulated, and fastening bolts.
Electric drive torque wrench features: easy to use, saves time and effort, adjustable torque. A.In the use of torque wrench, first according to the measure's requirements, selecting medium-range torque wrench, torque value is not less than the torque measured by using 20% of range, range should not be too much for smaller torsion part of reinforcement, small range of torque may not overrange; b.When using a torque wrench, wrench first dowel plug in the accessories (such as Sockets, mouth), ensure that the 
Mechanical Torque Wrenches Suppliers is not a problem.Before the reinforcement torque, set the required reinforcement of the force, and lock the locking device, adjust the
conversion button to the AB direction and then quickly when used in continuous operation 5-6, Special lubricant on the inside of the wrench can fully lubricated, so that more accurate Torque Wrenches, lasting use. C.When hand to grasp the hand of the valid range, along the direction perpendicular to the shell of torque wrenches, slowly loading, until you hear the torque wrench was given a "TA" sound, torque wrench preset torque value has been reached at this time, has been finished strength of the workpiece, then should be lifted in time force, so as to avoid damage to other parts.In the process of applying force, according to the national standard instrument practice, about its verticality deviation should not exceed 10 degrees.Its upper and lower deviation should not exceed 3 degrees in the horizontal direction, in the operator should ensure that the scope of their force above and below shall not exceed 15 degrees; d.In order not to enable the measurement of horizontal and vertical deviations in the direction of impact, when in Afterburner control stable exerted a vertical downward force on the side, and then manually add such precision use value.

2015年6月20日星期六

Wrenches category

dial indicator torque wrenches can be divided into: preset-type Torque Wrenches, Torque Wrenches, MINI type torque wrench, torque wrench, dial torque wrench, fan-shaped torque wrenches and special torque wrench.
Preset digital display Mini torque wrenches • 
torque wrench calibration tool are designed for precision applications and all torque value measured, precise, reliable and economical • rugged, lightweight aluminum construction, offering "dual-dial" (metric and Imperial) scales.When the desired torque is reached, audio/video signal to draw the operator's attention • double torsion ratchet mechanism can be quickly implemented in a limited space "stopped" (except for some products)
• The pros and cons operator can tighten or loosen screws, so that the economic wrench is perfect to meet all needs

2015年6月15日星期一

Structure of the torque wrench

calibration of torque wrenches also known as torque, torque screwdrivers.It is based on the principle of bending, torsion beam
Designed on the principle of bending and coil spring compression principle, able to measure the torque acting on the nut.
Square Drive Hydraulic Torque Wrenches manufacturers and two types: flat plate and the dial.Torque wrench with a long flexible pole, its carrying handle at one end and the other end with a square or hexagonal head, on a square or hexagonal head set a sleeve that can be changed, with the ball stuck.At the top was also equipped with a long

2015年6月10日星期三

Torque wrench (torque wrench) kata sounds coming from the principle

Torque wrench (torque wrench) kata sounds coming from the principle is very simple, to understand can be divided into the following steps:
1 in of, torque wrench was given a "Kata" sound is prompt you the required torque value has been reached;
2, issued by the 
torque and speed testers "Kata" is generated by the torque release structure itself, its structure consists of pressure springs, torque release joints, torque Rod consists of three structures.

3, first in the torque wrench setting torque value required (set by a spring on the top bar to pressure release joint torque), lock the torque wrench, start to tighten the bolts.When the bolt reaches the torque value (when using torque greater than the spring tension), out of line will produce an instant effect.In moments of disjointed effect issued joint tapping, issued by the metal casing of the wrench "Kata" sound.To confirm the reminder of the 
Square Drive Hydraulic Torque Wrenches is reached (as we arm and joint moments Shen in the 15 degree bend in the pipe encounter after straight pipe principle).Manual torque wrench is the most commonly used mentioned above, in addition to electric torque wrenches, pneumatic torque wrench.China's large industrial chain, industry concentration, torque wrench products industry support of the research and development capacity and low manufacturing technology still exists, import and export trade deficit expanded.Period of years would be industry's high-speed shock torque wrench, direct consequences of this shock is the polarization trend in expanding the brand camp.Real in the coming years is expected to survive in the market enterprise must not have so much.However, torque wrench this shock will bring great opportunities, the shock result would be to make the market more rational.Domestic production of high-end road anomaly "bumpy".Components manufacturing to high-end development, China has become the short Board, 35, Government will continue to increase the torque wrench nationalization of industry equipment parts.

2015年4月1日星期三

How to calculate the length of the hydraulic cylinder piston rod?

As we all know, the piston rod is widely used in our daily cylinders, fuel tanks, hydraulic cylinders and other moving parts in execution, a connecting member to support the piston to do work, it can play a major role in the transmission of a force. The use of the piston rod in the cylinder, we are all the requirements for its length, otherwise excessive use of the product will affect the piston rod, the piston rod is too short will cause the limited physical structure, to withstand a large proportion of radial force, so the length of the hydraulic cylinder piston rod must be moderate. So how should we calculate the length of the hydraulic cylinder piston rod it?
Calculation main hydraulic cylinder piston rod length:
In general, the general length of the hydraulic cylinder piston rod is mainly taken 0.7-1.0 times the outer diameter of the piston rod, the length of the piston rod may serve to increase the surface area of ​​the support, the guiding role increased, will reduce the wear rate, to improve the the useful life of the hydraulic cylinder used.
The main hydraulic cylinder piston rod diameter according to the size of the forces to determine its internal bore and the outer diameter of the sealing groove have to control concentricity tolerances in the range of 0.02mm. In addition, as we generally require end face of the hydraulic cylinder. hydraulic cylinder axis vertical tolerance is less than 0.04mm / 100mm, so the error outer diameter of the piston bore roundness, cylindricity error, etc., can not be greater than half its size tolerances.
The quality of the hydraulic cylinder piston rod, can be determined to a large extent the good or bad quality of the hydraulic cylinder, the piston rod so our machining precision is extremely high. So the length of the cylinder rod after the preliminary determination, we also need to follow its speed requirements for verification. If it can be determined accurately set to meet the power and speed of these two requirements before.

2015年3月29日星期日

Type hydraulic cylinder

According to the form of the structure of a conventional hydraulic cylinder, which can be divided into three types: structural forms sanitation garbage truck hydraulic cylinder varied, there are a variety of classification methods: by movement can be divided into linear reciprocating and rotary swing ; by the liquid-pressure situation can be divided into single-acting and double-acting; form of the structure can be divided into piston, piston, multi-stage telescoping; rack and pinion, etc; can be divided according to the installation form for rod, earrings, foot, hinge shaft; pressure level can be divided according to 16Mpa, 25Mpa, 31.5Mpa so on.

Hydraulic cylinder piston

Single rod cylinder is only one end of the piston rod. As shown is a single hydraulic cylinder piston. Both ends of the import and export of oil through ports A and B can pressure oil or oil return to two-way movement, it is known as double-acting cylinders.
Only one-way movement of the piston, the opposite direction from the force required to complete. But its stroke hydraulic cylinder piston generally more big.

Hydraulic cylinder piston works

Hydraulic cylinder piston rod can be divided into single and double rod two structures fixed by way of fixed and fixed two cylinder piston rod, according to the role of fluid pressure in the case of a single-acting and double-acting. In a single-acting hydraulic cylinder, the pressure oil chamber is for a hydraulic cylinder, by hydraulic pressure of the cylinder to achieve a single direction of movement, the movement in the opposite direction by an external force (e.g. spring force, its own weight or external loads, etc.) to achieve; and bis acting hydraulic cylinder piston movement in both directions through the two chambers alternately into the oil, by the action of hydraulic pressure to complete.
As shown for the double-acting hydraulic cylinder piston rod single schematic. There is only one side of the piston rod, and thus the effective role of different areas of the two chambers. Are the same, different chamber into the oil, the piston velocity at different fuel supply; load force to be overcome in the same, different chamber into the oil, the oil pressure required for different, or when the system pressure settings, sanitation different garbage truck hydraulic cylinder movement in both directions to overcome the force of the load.

Piston hydraulic cylinder

(1) piston hydraulic cylinder is a single-acting hydraulic cylinder, hydraulic pressure can only be achieved by a direction of movement of the plunger return to rely on other external or plunger weight;
(2) does not support the piston and cylinder liner rely on contact, so that the liner easily processed, it is suitable for making long-stroke hydraulic cylinders;
(3) working the plunger of the total pressure, so it must have sufficient rigidity;
(4) tend to be larger piston weight, easy to sag due to its own weight when placed horizontally, causing the seal and guide unilateral wear, so the vertical use of more favorable.

Telescopic hydraulic cylinders

Telescopic hydraulic cylinder piston has two or more stages, telescopic hydraulic cylinder piston out of style in descending order, while the load is normally retracted the order from small to large. Telescopic cylinders can achieve a longer stroke, while retraction length is shorter, more compact structure. Such cylinders commonly used in the construction machinery and agricultural machinery. There are a plurality of primary motion of the piston, each piston during successive movement, the output speed and output power are changing.

Swing cylinder

Swing hydraulic cylinder is an actuator output torque and to achieve a reciprocating motion, also called the swing hydraulic motor. There are two forms of single and double leaf blades. The stator is fixed to the cylinder block, and the blades and rotor are connected together. According inlet direction, will drive the rotor blades for reciprocating swing.

2015年3月26日星期四

Cylinder valve Introduction

Pump is the energy source of hydraulic systems, depending on the force of the hydraulic pump oil into the cylinder,piston cylinder and then through hydraulic lines,piston there are seals, sealing each with different status of several groups are different, but have played a role in sealing the hydraulic oil can not leak. Finally, the one-way valve in the hydraulic oil tank cycle of the cylinder ,piston cycle acting. Hydraulic machine from the host and master of two local organizations composed. Hydraulic machine contains a host of local body, the master cylinder, the top of the cylinder and filling installation. Aluminum coil punching Energy Agency from the fuel tank, pressure pump, low pressure control systems, motors and all kinds of pressure valves and directional valve. Energy Agency in the electrical installation of the master, to achieve energy conversion, conditioning and walks through the pump and cylinder and various hydraulic valves, to achieve a variety of process recycling initiatives.

Hydraulic cylinder (hydraulic motors SBI): The hydraulic energy into mechanical energy master valve: grasp the flow of hydraulic oil flow, pressure, hydraulic SBI task order, etc., and cover the role of the hydraulic circuit. Talking point is difficult and flow control and conditioning hydraulic medium, pressure and flow. Thus capturing still fulfill the steering mechanism, the input force or torque. Stationary speed. Initiative order, and task constraints and conditioning hydraulic pressure system, to avoid overload effect. (Such as one-way valve, valve, relief valve, relief valve, sequence valve, throttle. Governor valves, etc.)