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Lever type dynamic load test platform with loads adjustable

A lever-type, test-bed technology, which is applied to the testing, measuring devices, instruments, etc. of machine/structural components, can solve the problems of difficult maintenance, laborious and laborious adjustment, and large floor space, so as to achieve convenient, simple and applicable adjustment. Wide range and small footprint

Inactive Publication Date: 2013-07-10
北京起重工具厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the direct weight method is simple and intuitive, there are a series of problems such as large area, high cost, many weights, laborious adjustment, low efficiency, and poor connection with final assembly and packaging inspection; if In a few cases, the hydraulic loading method test bench is not intuitive, the loading status does not match the actual working conditions, the cost and maintenance costs are high, the maintenance is difficult, and the hydraulic gauge is difficult to reflect the real loading status.

Method used

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  • Lever type dynamic load test platform with loads adjustable
  • Lever type dynamic load test platform with loads adjustable
  • Lever type dynamic load test platform with loads adjustable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] A lever-type adjustable load dynamic load test bench, such as figure 2 , 3 , shown in 4, it has lever 1, main column 2, column 3, girder 5, upper hanger device 6, upper hanger hook 14, lower hanger device 7, connecting part 9, external force source 10, fixed pulley 12 , multi-groove fixed pulley 13;

[0062] like Figure 10 Shown, one end of lever 1 is a moment arm, and the other end is a heavy arm, and moment arm side is provided with moment arm side installation hole 19, can be to open one, two, three, or a plurality of, what the present embodiment opens is five The heavy arm side has the heavy arm side installation hole 20, can be to open one, two, three, or a plurality of, what the present embodiment has opened is four holes; between the arms;

[0063] like Figure 9 As shown, the lower hanger device 7 is movably connected with the lever 1 through the arm side installation hole 19 and the heavy arm side installation hole 20. The lower hanger device 7 on the a...

Embodiment 2

[0076] A lever-type adjustable load dynamic load test bench, such as figure 2 , 21 , 4, its structure is basically the same as that of Embodiment 1, the only difference is that the lever-type adjustable load dynamic load test bench has two parallel arrangement structures, and can also be three, four, or multiple parallel arrangement structures.

Embodiment 3

[0078] A lever-type adjustable load dynamic load test bench, such as Figure 5 , 6 , 8, its structure is basically the same as that of Embodiment 1, the only difference is that it also has a transmission track 8, and the transmission track 8 is fixedly installed parallel to the main beam 5 at a certain distance and passed through a lever-type adjustable load dynamic load test bench. , is supported by column 3, and is fixed firmly through small beam 11.

[0079] The transmission track 8 is used for the final completion of the transmission product and the assembly and packaging product. The transmission track 8 transmits the product through the hanger trolley on the ring track. The transmission track 8 can be circular or other structures.

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Abstract

The invention discloses a lever type dynamic load test platform with loads adjustable which is suitable for a loading detecting test on chain block products in the field of hoist machinery. The lever type dynamic load test platform with the loads adjustable adopts a special lever capable of adjusting loads, a framework and an external force source, wherein the framework and the external force source are matched with the special lever. The theories that the product of a force and a force arm equals to the product of a weight and a weight arm, and a fixed pulley can change the transmission direction of the force and a movable pulley can change the transmission speed and the size of the force are utilized, and therefore a complete integral system capable of adjusting the loads is achieved. The requirement for achieving different test loads is met by adjusting the distance between the force arm and the weight arm and the positions of the force arm and the weight arm, so that tests and detection of products of different specifications are achieved. The lever type dynamic load test platform with the loads adjustable has the advantages of being economical, safe, reliable, convenient and simple to operate, and capable of meeting the detection standard requirements of a test piece and improving working efficiency and the like, solves the problem of adjustment under the condition of testing series products with different specifications and different loads on the same test platform, and solves the problems of large occupied area, high manufacturing cost, many weights, difficult operations, low efficiency, high cost, maintenance difficulties and the like. In addition, the problem that an original hydraulic loading condition does not accord with the practical working condition is solved.

Description

technical field [0001] The invention discloses a lever-type adjustable load dynamic load test bench, which belongs to the technical field of dynamic load detection and is used for carrying out loading tests on products to accurately detect the bearing capacity and practical performance of products, and is especially suitable for lifting machinery products (such as hand chain hoists and related products) for loading detection test. Background technique [0002] The quality and safety of products is the lifeline of products. Products without safety as a basic guarantee are like lifeless people, and cannot enter the circulation market at all. [0003] Product safety is related to too many levels. How to ensure product safety and reliability is an urgent problem that needs to be solved in today's society. . [0004] At present, in the field of lifting chain hoists, the quality and safety inspection of products is carried out, and the dynamic load test or type test of the teste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M99/00
Inventor 李鉴根王军
Owner 北京起重工具厂
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