CN103411827A

CN103411827A - Tensile fixture of round bar tensile sample

Info

Publication number: CN103411827A
Application number: CN2013103808400A
Authority: CN
Inventors: 李晓冬; 赵炜; 陆连萍; 丁阳
Original assignee: Shanghai Electric Nuclear Power Equipment Co Ltd
Current assignee: Shanghai Electric Nuclear Power Equipment Co Ltd
Priority date: 2013-08-28
Filing date: 2013-08-28
Publication date: 2013-11-27

Abstract

The invention discloses a tensile fixture of a round bar tensile sample. The fixture comprises an upper connector and a lower connector, which are respectively connected with a tester, wherein the fixture also comprises an upper clamp connected with the upper connector; the upper clamp comprises an upper chuck; the clamp also comprises a lower clamp connected with the lower connector; the lower clamp comprises a lower chuck; the fixture also comprises lower bolts which are arranged inside the upper chuck and the lower chuck. By adopting the tensile fixture, the defects of large noise, high power consumption, incapability of mounting an extensometer and the like of the traditional fixture are overcome; meanwhile, the tensile fixture is convenient and fast to replace, and is an accurate, fast and economic clamp system.

Description

Pole tensile sample stretching clamp

Technical field

The present invention relates to a kind of pole tensile sample stretching clamp.

Background technology

Nuclear power manufacturing enterprise all adopts yield strength as performance assessment criteria during to tests such as raw-material examination, welding material examination, qualification of welding procedure, product witness spares, and this performance assessment criteria is absolutely necessary, but much materials and wlding are no remarkable yields under many circumstances.So just need to measure Rp0.2(regulation plastic elongation intensity) as performance assessment criteria, the mensuration of Rp0.2 need adopt extensometer to complete, existing stretching clamp adopts hydraulically operated fixture, hydraulically operated fixture can't the normal mounting extensometer, as needs, extensometer being installed needs the stretching standard sample is lengthened, so just caused the waste of material, and the specification of material is certain under many circumstances, can't lengthens sample at all.Hydraulically operated fixture also exists the shortcomings such as power consumption is large, noise is large in process of the test simultaneously.

Summary of the invention

A kind of pole tensile sample stretching clamp provided by the invention, solved that original fixture noise is large, power consumption is large, the shortcoming such as extensometer can't be installed, and changes simultaneously fixture convenient, fast, is a kind of accurate, quick, economic chucking appliance system.

In order to achieve the above object, the invention provides a kind of pole tensile sample stretching clamp, this fixture comprises upper connector and the lower web member be connected with testing machine respectively, this fixture also comprises the upper fixture that connects upper connector, should have upper grip by upper fixture, this fixture also comprises the lower clamp that connects lower web member, and this lower clamp comprises lower chuck.

Described upper grip and lower chuck all have internal thread.

This fixture also comprises the upper latch be arranged in upper grip and the lower latch be arranged in lower chuck.

The present invention has the following advantages:

1, energy-conservation, consumption reduction;

2, the replacing fixture is convenient, fast;

3, clamping is safe, convenient, fast.

The accompanying drawing explanation

Fig. 1 is structural representation of the present invention;

Fig. 2 is the open mode schematic diagram of upper fixture;

Fig. 3 is the closure state schematic diagram of upper fixture;

Fig. 4 is the explosive view of upper grip;

Fig. 5 is the open mode schematic diagram of lower clamp;

Fig. 6 is the closure state schematic diagram of lower clamp;

Fig. 7 is the explosive view of lower chuck.

Embodiment

Following according to Fig. 1～Fig. 7, illustrate preferred embodiment of the present invention.

As shown in Figure 1, the invention provides a kind of pole tensile sample stretching clamp, this fixture comprises upper connector 1 and the lower web member 7 be connected with testing machine respectively, this fixture also comprises the upper fixture 3 that connects upper connector 1, should have upper grip 31 by upper fixture 3, upper grip 31 has internal thread, this fixture also comprises the lower clamp 6 that connects lower web member 7, this lower clamp 6 comprises lower chuck 61, lower chuck 61 has internal thread, and this fixture also comprises the upper latch 2 be arranged in upper grip 31 and is arranged on the lower latch 5 in lower chuck 61.

As shown in Figure 2, be the open mode schematic diagram of upper fixture 3, as shown in Figure 3, be the closure state schematic diagram of upper fixture 3, as shown in Figure 4, be the explosive view of upper grip 31.

As shown in Figure 5, be the open mode schematic diagram of lower clamp 6, as shown in Figure 6, be the closure state schematic diagram of lower clamp 6, as shown in Figure 7, be the explosive view of lower chuck 61.

Principle of work of the present invention is as follows:

As shown in Figure 1, upper latch 2 is extracted out, open upper grip 31, lower latch 5 is extracted out, open lower chuck 61, the upper end of sample 4 is put in upper grip 31, close upper grip 31, upper latch 2 is inserted in upper grip 31, the position of fixture 3 in adjustment, make the lower end of sample 4 be placed in lower chuck 61 fully, after by the adjusting test machine, weighing internal thread that position makes the external thread of lower end of sample 4 and lower chuck 61 and agree with fully, close lower chuck 61, lower latch 5 is inserted in lower chuck 61, complete the clamping of sample 4, then extensometer 8 is arranged between upper grip 31 and lower chuck 61.

Adopt clamping sample convenience of the present invention, safety, use quick, problem that can't the normal mounting extensometer in real solution sample process, the present invention adopts mechanical grip, not power consumption, noiselessness, real solution the problem that exists of hydraulically operated fixture, this clamp-replacing is convenient, fast simultaneously, only two latches of upper and lower fixture need to be extracted, just can realize fast clamp-replacing.

Although content of the present invention has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple modification of the present invention with to substitute will be all apparent.Therefore, protection scope of the present invention should be limited to the appended claims.

Claims

1. pole tensile sample stretching clamp, it is characterized in that, this fixture comprises upper connector (1) and the lower web member (7) be connected with testing machine respectively, this fixture also comprises the upper fixture (3) that connects upper connector (1), should have upper grip (31) by upper fixture (3), this fixture also comprises the lower clamp (6) that connects lower web member (7), and this lower clamp (6) comprises lower chuck (61).

2. pole tensile sample stretching clamp as claimed in claim 1, is characterized in that, described upper grip (31) and lower chuck (61) all have internal thread.

3. pole tensile sample stretching clamp as claimed in claim 1, is characterized in that, this fixture also comprises and is arranged on the upper latch (2) in upper grip (31) and is arranged on the interior lower latch (5) of lower chuck (61).