fish plate bolts are mainly used for tensile, compression, and bending tests of metals and nonmetals. Applicable to metallurgy, construction, light industry, aviation, aerospace, materials, universities, scientific research institutions and other fields.

How to maintain fish plate bolts?

1. All valves on the control cabinet can not be opened to avoid dust entering the interior and affecting the sensitivity of the measuring mechanism.

2. The frequent use of fish plate bolts for a long time may lead to a reduction or deterioration of the oil amount, so the oil amount should be checked every 1-3 months according to the use. After 15 minutes of equipment shutdown, observe the oil window on the left side of the control cabinet. If the oil level is lower than the oil window, add the same hydraulic oil to the middle of the oil window. If the oil deteriorates, replace it with a new hydraulic oil.

3. Frequent use of fish plate bolts for tensile fracture tests may cause some fasteners to loosen. Always check the tightness of the following parts:

A. There are two (a total of eight) L-shaped pressure plates before and after the upper beam and the active beam (to guide the clamp), and each pressure plate is fixed with two screws;

B. Move the 6 screws at both ends of the beam;

C. Check the tightness of the fish plate bolts spiral drive chain once every six months, and adjust the position of the tensioning wheel accordingly (after removing the lower skirt plate of the main body);

4. According to environmental conditions and frequency of use, lubricate the following parts every 3 to 6 months:

A. Lubricate the connection between screw and base with No. 100 oil;

b, screw transmission chain with butter lubrication;

C. The threaded part of the screw is kept clean and lubricated with butter or molybdenum disulfide;

The two lubrication points ab should be carried out after removing the main body lower shield.

5. The upper beam and moving beam are respectively equipped with two clamps for the equipment clamp, which is an important part of the fish plate bolts. According to the use, often remove the debris on the contact surface between the clamp and the beam, so as not to scratch the contact surface. The method is: remove the clamping plate on one side of the movable beam, take out the clamp, wipe the contact surface between the clamp and the beam with an oil rag, apply a suitable amount of grease mixed with butter and graphite, then put the clamp back, and tighten the fixing screw of the clamp.

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