Hydraulic bolt tensioners matters needing attention

This product is a high precision products, when used to remind you:

1, hydraulic bolt tensioners in use should avoid knock against, and fall;

2, it is strictly prohibited to knock and collision with sharp hard objects display area;

3 and applying pressure should be smooth, absolutely more than detection range of use;

4, long-term outage Square Drive Hydraulic Torque Wrenches should remove the battery to prevent battery leakage;

5, it is forbidden to use strong solvents (such as benzene, nitro) wipe the panel and the display area;

6, beware of liquid into the wrench, lest damage electronic components;

7, when the battery voltage to can't work, should replace the battery;

8, it is strictly prohibited to free disassembly, lest affect accuracy, if encounter problems, please contact the manufacturer or seller.

9, after using this product should be put back in box;

10, calibration method is only for reference calibration, other people do not move;

11, the product from the date of sale and a half years, in normal use, the non-artificial factors resulting in failure of the products belong to the warranty scope;

The torque wrench testers

torque wrench testers, is a test instrument for checking various 100ton hydraulic jacks. The instrument adopts single-chip microcomputer control technology and the high precision torque sensor and bearing bracket, etc. Its test precision, stable performance, feature-rich, easy to operate. Method of the instrument in accordance with Confucianism in the industry leading technology, the indicators to achieve the domestic first-class level, is a high performance testing instruments, has been widely used in electric power, light industry, machinery, engines, internal combustion engine, electric cars, motorcycles, cars, ships, aircraft and other manufacturing industries and metrological testing department.

The structure of the hydraulic torque wrench chart

hydraulic torque wrench chart is also called the torque meter, torque screw whorls. It is the theory of beam bending, torsion bar

Principle of bending and compression principle of helical spring, designed to measure the effect on the nut torque size. torque wrench calibration tool with a long elastic rod, the end with a handle, the other end with a square or hexagon head, in a square or hexagon head suit a replaceable sleeve, with steel ball stuck. Also equipped with a long pointer on the top. Scale plate fixed to the handle seat, each grid scale value is 1 n (or kg/m). Before use, first will be installed in the indicator on the wrench to adjust to the required torque, then throw a wrench, when reach the predetermined torque, indicator pointer will turn to pin a party, the last pointer to collide with the pin shaft, through sound signal or sensing signal to inform the operator.

The working principle of hydraulic bolt tensioners

 hydraulic bolt tensioners card tower sound principle is very simple, can be divided into the following steps to understand:

1, Square Drive Hydraulic Torque Wrenches is prompt after issued a "tower" sound has reached you claim on the torque value;

2, "tower card" is issued by a torque wrench by itself of the internal structure of torque to release them to release the joint structure is divided into spring pressure, torque, torque of plunger, three structure.

3, first on the torque wrench set the required torque value (from the spring set on the plunger to the torque pressure release joints), locking torque wrench, began to tighten the bolt. When the bolt to the torque value (when using torque greater than the pressure of the spring), will produce instant effect between. At the moment have a disconnect effect issued a joint percussion, wrench metal case of "tower" sound. Thus to confirm be reminded torque values (as we arm joints bend in iron pipe into 15 degrees will encounter after the "straight steel tube principle as a fraction of a second).

The above is the most commonly used manual torque wrench, there are electric torque wrench, pneumatic torque wrench and so on.

dial indicating torque wrench

dial indicating torque wrench is also called the torque wrench, torque wrench or torque wrench, torque is the product of the force and distance, when the thread fasteners such as fastening screw bolt and nut torque size needs to be controlled, to ensure that the thread fastening and not because of destruction of the torque is too large, so use the torque wrench to operate. First set a maximum flange alignment, torque reaches the set value when, wrench "card tower" noise or wrench joint bending Angle, this is already tightening torque.

dial indicator torque wrenches

dial indicator torque wrenches is also called the torque wrench, torque is the product of the force and distance, when the thread fasteners such as fastening screw bolt and nut torque size needs to be controlled, to ensure that the thread fastening and not because of destruction of the torque is too large, so use the Mechanical Torque Wrenches to operate. First set a maximum torque, torque reaches the set value when, wrench "card tower" noise or wrench joint bending Angle, this is already tightening torque. Torque wrench can be divided into: preset torque wrench, 

Construction of calibration of torque wrenches

Camshaft is a cylindrical rod of the same length with the cylinder group.Above there are several cam, used to drive the valve.Camshaft bearing at one end, and at the other end is connected to the drive wheels.
Side of the cam is egg-shaped.calibration of torque wrenches design goal is to ensure that the cylinder sufficient intake and exhaust, specifically, in the shortest possible time in the valve opening and closing action.Taking into account the durability and smooth operation of the engine, valve or the deceleration during opening and closing movements too much impact, otherwise dial indicating torque wrenches will cause severe valve wear, noise, or other serious consequences.
Generally inline engine, one cam per valve, v engine or a horizontally opposed engine is one cam per two valves share.Rotary engine and valve valve engines due to their special construction, does not need the cam.