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Device and method for testing fatigue performance of round-link chain

A fatigue performance, circular chain technology, applied in the field of fatigue testing, can solve the problems of difficult to obtain accurate data, misalignment or deviation, low test success rate, etc., to improve the success rate and accuracy, flexible use, operation safe effect

Pending Publication Date: 2021-03-12
中钢集团郑州金属制品研究院股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are mainly two test methods for testing the fatigue performance of the circular link chain: the first is to directly clamp the end link of the circular link chain. Since the cross section of the circular link chain is circular, it is easy to use this clamping method. Slipping during the fatigue test, misalignment or pulling deviation is easy to occur during the loading process, the success rate of the test is low, and it is difficult to obtain accurate data; the second is to use the pins to pass through the links at both ends of the circular link chain respectively , to apply force to the pin, although the success rate of the test is high, but due to the variety of link types and sizes of the circular link chain in different fields, it is necessary to make the corresponding pin and the overall clamping tool, the cost is too high, and the disassembly and assembly are complicated

Method used

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  • Device and method for testing fatigue performance of round-link chain
  • Device and method for testing fatigue performance of round-link chain
  • Device and method for testing fatigue performance of round-link chain

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A method for detecting the fatigue performance of a circular link chain in embodiment one is achieved through the following steps:

[0036] A. The round link chain to be tested (3) is 10×40 in size and has a total length of 1m. According to the size of the round link chain (3), select a V-shaped card block with a diameter of 20mm (4 and the matching card plate (2 ;

[0037] B. According to the test requirements, determine the number of links of the round link chain (3;

[0038] C. First place the two jaw seats 1 in the upper and lower beams of the hydraulic universal testing machine respectively, adjust the positions of the upper and lower beams to ensure that the two jaw seats 1 are centered and the distance matches the length of the circular link chain 3 to be tested;

[0039] D. Insert the two clips 2 into the middle flat grooves 1-2 of the two jaw seats 1 respectively, so that the front and rear end faces of the clip 2 are flush with the front and rear end faces of...

Embodiment 2

[0044] A method for detecting the fatigue performance of a circular link chain in embodiment two is realized through the following steps:

[0045] A. The specification and model of the circular link chain 3 to be tested is 42×152, and the total length is 1.1m. According to the specification and model of the circular link chain 3, a V-shaped clamping block 4 with a diameter of 85mm and a clamping plate 2 of corresponding matching specifications are selected;

[0046] B, according to test requirement, determine the link quantity of circular link chain 3;

[0047] C. First place the two jaw seats 1 in the upper and lower beams of the hydraulic universal testing machine respectively, adjust the positions of the upper and lower beams to ensure that the two jaw seats 1 are centered and the distance matches the length of the circular link chain 3 to be tested;

[0048] D. Insert the two clips 2 into the middle flat grooves 1-2 of the two jaw seats 1 respectively, so that the front an...

Embodiment 3

[0053] A method for detecting the fatigue performance of a circular link chain in embodiment three is achieved through the following steps:

[0054] A. The specification and model of the circular link chain 3 to be tested is 26×92, and the total length is 1m. According to the specification and model of the circular link chain 3, a V-shaped clamp block 4 with a diameter of 55mm and a clamp plate 2 of corresponding matching specifications are selected;

[0055] B, according to test requirement, determine the link quantity of circular link chain 3;

[0056] C. First place the two jaw seats 1 in the upper and lower beams of the hydraulic universal testing machine respectively, adjust the positions of the upper and lower beams to ensure that the two jaw seats 1 are centered and the distance matches the length of the circular link chain 3 to be tested;

[0057] D. Insert the two clips 2 into the middle flat grooves 1-2 of the two jaw seats 1 respectively, so that the front and rear ...

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Abstract

The invention discloses a device and method for testing the fatigue performance of a round-link chain, and belongs to the technical field of fatigue testing. Quick connection and fixation of the round-link chain and a hydraulic universal testing machine are realized through two sets of hanging assemblies which are symmetrically hung in chain rings at the two ends of the round-link chain and are externally connected with the hydraulic universal testing machine, and stable transmission of loading force is realized, namely the loading force of the hydraulic universal testing machine is transmitted to the round-link chain through a jaw seat, a clamping plate and a V-shaped clamping block in sequence. According to the invention, rapid connection and fixation of the round-link chain and the hydraulic universal testing machine can be realized, smooth operation and accurate measurement of a round-link chain fatigue test are ensured, and the success rate and accuracy of the fatigue test are improved; and the device has the advantages of stable force transmission, automatic centering, accurate testing, avoidance of damage to the round-link chain, high efficiency, high success rate, convenience in mounting, safety in operation, flexibility in use, high universality and low cost.

Description

technical field [0001] The invention relates to the technical field of fatigue testing, in particular to a device and method for testing the fatigue performance of a circular link chain. Background technique [0002] Circular link chains are widely used in navigation, mining, industrial cranes and other fields. Before use, the fatigue performance test of the circular link chain is required, because the fatigue performance of the circular link chain is directly related to production safety. At present, there are mainly two test methods for testing the fatigue performance of the circular link chain: the first is to directly clamp the end link of the circular link chain. Since the cross section of the circular link chain is circular, it is easy to use this clamping method. Slipping during the fatigue test, misalignment or pulling deviation is easy to occur during the loading process, the success rate of the test is low, and it is difficult to obtain accurate data; the second is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/023
CPCG01M13/023
Inventor 毛海波洪涛张钫何岩史铭楷严祖润
Owner 中钢集团郑州金属制品研究院股份有限公司
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