Shanghai CenNuo machinery co., LTD., operating the project has a hydraulic jack, hydraulic wrench, hydraulic rama, hydraulic pump, electric pump, manual pump, hydraulic cylinder, bearing heater, nut broken cutting, bolt tensioning jack, hydraulic wheel, bent pipe punching and electrical machine, apply to industry is very broad, marketing to the world. Below is the information the paper use of hydraulic torque wrench is introduced.

Hydraulic wrench as precise bolt lock down the tools has been more and more widely used in many industries, how to make enterprises better use hydraulic wrench tool has been is our concern. Many companies buy and use hydraulic wrench, but did not have a guide specification form throughout the whole process, this is not conducive to the correct use and maintenance of hydraulic wrench. In order to allow enterprises to more scientific use of hydraulic torque wrench, prolong the service life of the wrench.

First of all, what should you do before use check before operation. 1) whether the pump is suitable for the working environment, explosion-proof environment when using special explosion-proof hydraulic wrench pump. 2) check the electric pump operation voltage 220 v. 3) check whether power pump connected with wrench fast connection-peg plug, add 46 # anti-wear hydraulic oil, pressure adjustment. 4) check the hydraulic oil pump oil mark above the zero line, the hydraulic oil clear and transparent. Should add special hydraulic oil, it is forbidden to mix other oil. 5) check whether there is any bending on ultra high pressure hose damage; Connection to put the hose shall not be entangled with, plug socket clean with no dirt, insert quick release coupling, ensure reliable connection.

Secondly, the use of process according to the program operation. 1) line switch button function: push button (RUN), oil cylinder propulsion; Loosen the button, the oil cylinder automatic reset. (STOP) button, the pump STOP. 2) hydraulic pump, before starting to open the first (unscrew) pressure regulating valve, then open the power supply (ON), check whether the hydraulic pump is running normally; Then click move line control button several times, running a few minutes, pressure adjustment to the default values. The rated pressure of 70 mpa. 3) adjusting pressure, should hold the wire control button, when they hear a wrench "pa" 1, quick release lever, wrench in place stop running, pressure gauge from the zero shot up, another hand slowly adjust upward pressure regulator, and can be used lock nut lock. 4) idle running, the hydraulic wrench on the ground, by pressing the RUN button, spanner began to turn, when they hear a wrench, 1 of "pa" wrench in place stop running; Now let go button, wrench automatic reset, when once again hear wrench 1 of "pa", the reset is complete. Namely: RUN, propulsion, pa, let go, reset, pa. Repeat for several work cycle, the same rotation geomagnetic observation wrench, can be put to the wrench nut on the homework. If choose PRIMO prius horse pump automatic hydraulic wrench, only need to press time, the whole circulation process automatically. 5) open pine nuts: hydraulic pump pressure will be dispatched to the highest (70 mpa), confirm the wrench to for disassembly direction, looking for a good reaction to stand, and anchored, repeated cylinder in a work cycle. If the demolition, the rust removal measures, but if nut doesn't move, then switch to a larger number of hydraulic wrench. 6) locking nut: check torque corresponding to the table to determine the hydraulic pump pressure setting, confirm the wrench to lock direction, looking for a good reaction to stand, and anchored, repeated cylinder in a work cycle, until nut did not move. 7) hydraulic wrench operation stops, immediately shut off the power. 8) cut off the power supply after work, according to the pressure relief valve discharge system pressure, open the pressure regulating valve completely, then remove the tubing. After 9) wrench handle must unload the tubing.

Finally, according to the use of safe and the maintenance. 1) the machine must be familiar with the operation and safety requirements of the operator of the machine performance, operation. 2) set on the nut wrench socket, confirm reaction lever support. Don't put the hand on the reaction lever. 3) super high pressure hose is not allowed to discount and sharp. Shall not use the standard wrench socket. 4) strictly abide by the relevant regulations. Maintenance: regular cleaning filter tank, replace the hydraulic oil.

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