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Pressure test machine loading device

A technology of loading device and pressure test, applied in measuring device, using stable tension/pressure test material strength, instrument and other directions, can solve the problem that the force of the test piece is different from the expected situation, affecting the accuracy of test results, etc. The effect of reducing test error and improving accuracy

Active Publication Date: 2017-09-05
宁波市交通建设工程试验检测中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hoop effect will lead to additional deformation loads on the contact surface between the loading head and the specimen, which will make the stress on the specimen different from the expected situation and affect the accuracy of the test results

Method used

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  • Pressure test machine loading device
  • Pressure test machine loading device
  • Pressure test machine loading device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Such as figure 2 As shown, a loading device for a pressure testing machine includes a casing 1 and a loading part, the loading part is installed in the casing 1, and the connection part forms a seal. A pressure chamber is formed between the housing 1 and the loading part, and a pressure tube 2 is provided on the side of the housing 1. One end of the pressure tube 2 communicates with the pressure chamber, and the other end is connected to an external pressure pipeline. The pressurized medium enters from the pressurization tube 2 In the pressure chamber, pressure is applied to the loading part.

[0034] The loading part includes a fixed chassis and a plurality of loading blocks 3 . The loading blocks 3 are arranged in a criss-cross pattern on the fixed chassis, and there are gaps between adjacent loading blocks 3 . The pressure medium in the pressure chamber pressurizes each loading block 3 independently, and the loading blocks 3 operate independently of each other.

...

Embodiment 2

[0037] Such as image 3 with Figure 4 As shown, a loading device for a pressure testing machine includes a casing 1 and a loading part, the loading part is installed in the casing 1, and the connection part forms a seal. The loading part includes a fixed chassis 5 and one hundred loading blocks 3 , the loading blocks 3 are arranged on the fixed chassis 5 in the form of 10×10, and there are gaps between adjacent loading blocks 3 .

[0038] A pressure chamber is formed between the casing 1 and the fixed chassis 5, and a pressurized pipe 2 is provided on the side of the casing 1. One end of the pressurized pipe 2 communicates with the pressure chamber, and the other end is connected with a hydraulic oil pipeline. The pressure chamber is filled with hydraulic oil. For pressurization, the loading pressure can be adjusted accurately.

[0039] Such as Figure 5 with Image 6 As shown, each loading block 3 is connected to the fixed chassis 5 through a piston connecting piece, and...

Embodiment 3

[0041] Such as Figure 7 As shown, the difference between this embodiment and the above-mentioned embodiment is that the piston connector includes a piston 4 and a joint 7, and a connecting rod is arranged between the piston 4 and the joint 7. The middle part of one side of the loading block 3 is provided with a connection groove 8, and the joint 7 is installed in the connection groove 8 to form a connection. There is a gap between the joint 7 and the connecting groove 8, so that the loading block 3 has a certain movable space. At the same time, the joint 7 is spherical, and the connecting groove 8 is a spherical groove, so that the loading block 3 has a certain rotation space. Each loading block 3 can move independently on the contact surface of the test piece, so that the surface of the loading part and the surface of the test piece can be bonded together, and pressure can be effectively exerted on each point of the test piece to reduce the test error.

[0042] In addition...

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PUM

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Abstract

The invention discloses a pressure test machine loading device. The device comprises a shell and a loading part, the loading part is arranged in the shell, the loading part comprises a fixed chassis and a plurality of loading blocks, the loading blocks are arranged on the fixed chassis in a crisscross manner, and a gap exists between the adjacent loading blocks. The pressure test machine loading device pressurizes a test piece in a modular loading manner, the single loading blocks can pressurize independently, and the gap exists between the adjacent loading blocks, so the loading blocks have a certain expansion space and a certain moving space, thereby the influences of the ring hoop effect are maximally reduced, the accuracy of a pressure loading test result is improved.

Description

technical field [0001] The invention relates to the technical field of engineering testing equipment, in particular to a loading device for a pressure testing machine. Background technique [0002] The pressure testing machine is mainly used for the mechanical performance test of materials or components. The existing pressure test loading equipment is to place the test block or specimen on the loading platform, apply a uniform load to the test block or specimen, and spread the load evenly to the loading stage. On the surface, the load on the surface of the test block is uniformly distributed, and other forms of load cannot be obtained. [0003] The existing pressure testing machine uses a rigid platen loading head. When the specimen is compressed on the press, it will expand longitudinally along the loading direction and expand laterally. The anti-deformation ability is different, so friction is formed between the loading head and the compression surface of the specimen, wh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/12
CPCG01N3/12G01N2203/0048
Inventor 方继伟陈立平干啸洪应国刚谢玲儿朱建朝顾俊钢王维国李喜燕周可人伍绍一
Owner 宁波市交通建设工程试验检测中心有限公司
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