Testing support for box expansion force of coke oven tamping machine

Abstract

The invention relates to a testing support for a box expansion force of a coke oven tamping machine. At least one testing device for the box expansion force is connected in the supporting frame through sliding grooves on two sides, and the testing device for the box expansion force is composed of an air bag assembly, a cover plate and a pressure box positioning block. The air bag assembly is fixedly connected with the pressure box positioning block through the cover plate. The upper end of the air bag assembly is fixed through a clamping ring mounted in the sliding groove of the supporting frame. The lower end of the pressure box positioning block is fixed through a bottom cover plate mounted at the bottom of the supporting frame. The upper part of an air bag switch rod is connected with the supporting frame through a safety pin, the lower part of the air bag switch rod is connected with a rotary handle of the air bag assembly. The rotary handle is connected with a ball valve through aball valve rod, and the ball valve communicates with a high-pressure cavity and a low-pressure cavity of the air bag assembly. According to the testing support for the box expansion force of the cokeoven tamping machine, the problem that the pressure box cannot be fixedly mounted and cannot be taken out after testing can be solved in the test for the box expansion force of the coke oven tampingmachine. The testing support is simple in structure and low in manufacturing cost, can be freely assembled according to the field test requirements, and the test distance is freely set according to the depth of a coal box.

Description

technical field [0001] The invention relates to a test bracket, in particular to a bracket suitable for testing the expansion force of a coke oven tamping machine when tamping coal cakes, which is used in conjunction with an earth pressure box to test the expansion force of a coal box. Background technique [0002] The expansion force of the box is a parameter often tested for the box structure. It is the main parameter reflecting the internal pressure of the box and an important basis for determining the thickness of the box and the deformation of the box. The tamping machine tamps the coking coal according to the size of the carbonization chamber into a coal cake slightly smaller than the carbonization chamber, and then the coal pusher pushes the tamped coal cake from the side of the carbonization chamber into the carbonization chamber for high-temperature dry distillation. The briquette must be tamped to the required density, and the size of the section of the briquette s...

AI Technical Summary

Problems solved by technology

[0006] (1) The data measured by the direct test method of the earth pressure cell is the most accurate, but the tester needs to enter the inside of the box to install the earth pressure cell, and the coal box of the widely used SCP tamping machine is 6.5m high. With a width of 50cm, it is difficult for testers to enter. Even if they barely enter, it is very difficult to install the pressure box at a height above 2 meters of the coal box

When working in the coal box, coal powder also has certain safety hazards to the human respiratory system

[0007] (2) When the method of direct testing with earth pressure cell is used, after the briquette is tamped and formed, the earth pressure cell is completely embedded in the briquette and cannot be taken out

The pressure cell is expensive, this kind of one-time test will cause the waste of experimental sensors, which will greatly increase the test cost

[0008] (3) The signal transmission line of the earth pressure cell is buried in the briquette at the same time, which may cause damage to the signal line during the compaction process, resulting in interruption of signal transmission or inaccurate test data

[0009] (4) If the indirect test is carried out outside the box, the experimental data will be affected by many factors such as the placement position, placement quality, and box structure. The test data is not accurate enough, the repeatability is low, and it may even directly cause the test to fail.

Images