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Hydraulic cylinder test device and method under simulated working condition

A test device and hydraulic device technology, applied in the direction of fluid pressure actuation device, fluid pressure actuation system test, mechanical equipment, etc., can solve the problem of unilateral wear of piston rod and seal, on-site environmental pollution of hydraulic cylinder, and difficulty in meeting the requirements of Party A. and other problems to achieve the effect of ensuring the accuracy of detection, improving the quality of restoration, and reducing dependence

Inactive Publication Date: 2014-09-17
NANJING MEISHAN METALLURGY DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The parts of the oil cylinder are generally not at both ends of the full stroke, and the cylinders with more wear are generally in the common working positions of the oil cylinders, and some oil cylinders have to bear impact loads, and the existing hydraulic cylinder tests are difficult to meet this requirement
When the installation position of the oil cylinder is not in the same axis as the load running track, it often causes serious wear on one side of the piston rod and the seal. In the current test project, there is no targeted loading device according to the on-site installation and use. The test is usually The test carried out under ideal conditions is difficult to meet the requirements of Party A
If the quality control is not done well during the test, after the repaired hydraulic cylinder is used for a period of time, the external leakage of the hydraulic cylinder will cause great pollution to the site environment, and also cause a lot of waste of lubricating oil, which not only affects the service life, Once an accident occurs, it will cause incalculable losses

Method used

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  • Hydraulic cylinder test device and method under simulated working condition
  • Hydraulic cylinder test device and method under simulated working condition
  • Hydraulic cylinder test device and method under simulated working condition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The reference signs and components involved in the accompanying drawings are as follows:

[0033] 10 Trunnion support 12 Fixed triangular plate

[0034] 20 Tested oil cylinder 21V type iron

[0035] 22 jack 24 fixed guide rail

[0036] 26 Movable triangular plate 27 Trunnion connector between tested oil cylinder and loading oil cylinder

[0037] 30 Base 32 Handle for connecting oil cylinder

[0038] 35 Loading cylinder for trunnion type cylinder test 36 Base mounted cylinder for loading test

[0039] 40 Support base 51 Bottom plate for fixing oil cylinder or trunnion

[0040] 52 hoisting holes for hoisting and moving movable triangle plate 53 bolts

[0041] 54 semi-circular ring for fixed movable triangular plate 55 taper hole

[0042] 100 rail holes

[0043] Please see figure 1 , figure 2 and image 3 . figure 1 It is a schematic diagram of the structure of the fixed triangular plate in the tripod for the cylinder test. figure 2 It is a schematic diagram ...

Embodiment 2

[0051] Embodiment 2 Conventional hydraulic cylinder test method (taking the trunnion type hydraulic cylinder experiment as an example)

[0052] Test method for external leakage of hydraulic cylinder

[0053] according to Figure 4 Install the tested hydraulic cylinder, loading hydraulic cylinder, hydraulic pipeline, etc. in place, connect the tested hydraulic cylinder with the loading cylinder with a trunnion connector, and adjust the centering with the adjustment guide frame.

[0054] Please see Figure 10A , open the hydraulic system of the hydraulic cylinder under test, switch the reversing valve 230 to the left position, adjust the one-way throttle valve 211; switch the reversing valve 230 to the right position, adjust the one-way throttle valve 212; make the piston reciprocate multiple times, Side by side despite the air in the channel, when the measured hydraulic cylinder 222 is in place, adjust the overflow valve 209 to use as a safety valve, adjust the overflow valve...

Embodiment 3

[0059] Embodiment 3 Hydraulic cylinder withstands impact load test method (taking the trunnion type hydraulic cylinder experiment as an example)

[0060] Please see Figure 10B , install the tested hydraulic cylinder 222, the impact slide valve 223, etc., open the tested hydraulic cylinder 222, load the hydraulic cylinder to test the hydraulic system, switch the reversing valve 230 to the left position, and adjust the overflow valve 309 to gradually pressurize to 120% of the load pressure , load the cylinder to simulate the load and push the hydraulic cylinder under test. When the piston of the hydraulic cylinder under test moves to the position to be tested, close the high-pressure ball valves 210, 220, 270, and 280; close the high-pressure ball valves 360, 370, 380, and 390, and open the high-pressure ball valves. 310, 3201, 340, 350 At this time, the hydraulic system of the loading hydraulic cylinder adopts the impact hydraulic circuit composed of the quick reversing valve ...

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Abstract

The invention relates to a hydraulic cylinder test device and method under a simulated working condition, wherein the hydraulic cylinder test device is provided with a loading oil cylinder hydraulic device, a tested oil cylinder hydraulic device and a triangle frame for the test of the oil cylinder which are connected by hydraulic pipelines. The invention also provides a hydraulic oil cylinder test method under the simulated working condition. The dependence of the hydraulic cylinder test device under the simulated working condition on the technique and experiences of inspectors is reduced, the loading test is carried out at the whole process at any position, and the test pressure can be selected according the actual working condition of the tested oil cylinder; and when in test, if the quality can not be well controlled, after the repaired hydraulic oil cylinder is used on line for a period of time, the external leakage of the hydraulic cylinder can cause serious pollution to the field environment, and simultaneously the great waste of the lubricating oil can be caused, thus the service life is influenced, and once an accident occurs, inestimable loss can be caused.

Description

【Technical field】 [0001] The invention relates to a hydraulic cylinder test device, in particular to a hydraulic cylinder test device and a test method for simulating working conditions. 【Background technique】 [0002] The hydraulic cylinder test includes no-load test, internal leakage test, external leakage test, etc. Corresponding tests must be carried out after the hydraulic cylinder is repaired. The use parts of the oil cylinder are generally not at both ends of the full stroke, and the cylinders with more wear are generally in the common working positions of the oil cylinders, and some oil cylinders have to bear impact loads, and the existing hydraulic cylinder tests are difficult to meet this requirement. When the installation position of the oil cylinder is not in the same axis as the load running track, it often causes serious wear on one side of the piston rod and the seal. In the current test project, there is no targeted loading device according to the on-site ins...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B19/00
Inventor 徐天亮
Owner NANJING MEISHAN METALLURGY DEV
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