CN218067397U

CN218067397U - Tensile test clamping device

Info

Publication number: CN218067397U
Application number: CN202221972242.3U
Authority: CN
Inventors: 徐新颖
Original assignee: Jiangsu Yatai Aviation Technology Co ltd
Current assignee: Jiangsu Yatai Aviation Technology Co ltd
Priority date: 2022-07-28
Filing date: 2022-07-28
Publication date: 2022-12-16
Anticipated expiration: 2032-07-28

Abstract

The utility model provides a tensile test clamping device, including the same first portion of structure and second portion, the first portion includes: the U-shaped clamp comprises two clamping legs and a connecting part in the middle, and the front ends of the clamping legs gradually incline to the central line of the U-shaped clamp; the guide rod penetrates through the U-shaped clamp and can move up and down on the U-shaped clamp; the end part of the guide rod is provided with a flat head part; the spring is arranged between the U-shaped clamp and the guide rod; the clamping block part comprises a first clamping block and a second clamping block which have the same structure; the first clamping block and the second clamping block are symmetrically arranged in the U-shaped clamp, the upper ends of the first clamping block and the second clamping block are abutted against the flat head, and the lower side parts of the first clamping block and the second clamping block are respectively arranged on two clamping legs of the U-shaped clamp in a sliding mode. The utility model discloses need not come the tensile test clamping device who fixes through manual twist grip, easy operation avoids frequently changing the centre gripping frock, can improve test efficiency greatly.

Description

Tensile test clamping device

Technical Field

The utility model relates to a clamping device, especially a tensile test clamping device belong to material tensile test equipment technical field.

Background

At present, a tensile test is a common mechanical property testing method, a lot of materials all have tensile test requirements, especially in manufacturing enterprises, a large amount of tensile tests can be carried out every day, but the existing tensile tool is not universal, if the shapes of tensile sample wafers are different or the sizes of the tensile sample wafers are different, different clamping tools need to be replaced, and when the sample wafers are clamped, a manual rotating handle is needed to complete the tensile test, so that the operation is extremely inconvenient and takes a long time. Therefore, a clamping tool which is easy and convenient to operate is urgently needed to make up for the defects of the existing tool.

Disclosure of Invention

The utility model aims at overcoming the not enough of existence among the prior art, providing a tensile test clamping device, need not come fixed tensile test clamping device through manual twist grip, easy operation avoids frequently changing the centre gripping frock, can improve test efficiency greatly.

In order to realize the technical purpose, the embodiment of the utility model adopts the technical scheme that:

a tensile test holding apparatus comprising first and second parts of identical construction for holding respective ends of a tensile test specimen, the first part comprising:

the U-shaped clamp comprises two clamping legs and a connecting part in the middle, and the front ends of the clamping legs gradually incline to the central line of the U-shaped clamp;

the guide rod penetrates through the U-shaped clamp and can move up and down on the U-shaped clamp; the end part of the guide rod is provided with a flat head part;

the spring is arranged between the U-shaped clamp and the guide rod, one end of the spring props against the U-shaped clamp, and the other end of the spring props against the flat head part;

the clamping block part comprises a first clamping block and a second clamping block which have the same structure; the first clamping block and the second clamping block are symmetrically arranged in the U-shaped clamp, the upper ends of the first clamping block and the second clamping block are abutted against the flat head, and the lower side parts of the first clamping block and the second clamping block are respectively arranged on two clamping legs of the U-shaped clamp in a sliding manner;

the flat head is pressed down by the spring, and the flat head pushes the first clamping block and the second clamping block to move downwards along the U-shaped clamp and simultaneously clamp inwards.

Further, a first guide groove is formed in the inner side of the clamping foot; the outer side of the first clamping block is provided with a first guide rail, and the first clamping block can move along the clamping foot through the matching of the first guide rail and the first guide groove.

Furthermore, a second guide rail is arranged on the flat head part; and a second guide groove is formed in the bottom of the first clamping block, and the first clamping block is guided to horizontally move along the flat head part by the cooperation of the second guide groove and the second guide rail.

Furthermore, the head of the first clamping block is provided with a sawtooth surface for clamping the rectangular test piece.

Furthermore, a V-shaped clamping groove for clamping the round test bar is formed in the center of the head of the first clamping block.

Further, the central line of the guide rod is superposed with the central line of the U-shaped clamp.

Furthermore, the upper end of the U-shaped clamp is provided with a threaded connector.

The embodiment of the utility model provides a beneficial effect that technical scheme brought is:

1. the tensile test clamping device fixed through a manual rotating handle is not needed, the structure is simple, the operation is convenient, and the sample clamping efficiency is improved.

2. Can the circular and rectangle sample of centre gripping different size scopes simultaneously, solve the problem of frequently changing the frock because of sample shape and size are different, the practicality is strong.

Drawings

Fig. 1 is a schematic structural diagram in an embodiment of the present invention.

Fig. 2 is a side view in an embodiment of the invention.

Fig. 3 is a cross-sectional view in an embodiment of the present invention.

Fig. 4 is a schematic view of a clevis in an embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a guide rod according to an embodiment of the present invention.

Fig. 6 is a schematic structural view of the flat head of the guide rod in the embodiment of the present invention.

Fig. 7 is a schematic structural diagram of the first clamping block in the embodiment of the present invention.

Fig. 8 is a side view of the first clamping block in an embodiment of the invention.

Fig. 9 is a top view of the first clamping block according to the embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1, 2 and 3, the tensile test clamping device comprises a first part and a second part which have the same structure, wherein the first part and the second part clamp a tensile test sample in the middle, the first part and the second part are used for clamping one end of the tensile test sample respectively, and the first part comprises a U-shaped clamp 1, a guide rod 2, a spring 3 and a clamping block part 4. The U-shaped clamp 1 comprises two clamp feet 101 and a middle connecting part, and the front ends of the clamp feet 101 gradually incline to the central line of the U-shaped clamp.

As shown in fig. 3, 5 and 6, the guide rod 2 is inserted into the clevis 1 and can move up and down on the clevis 1, and the center line of the guide rod 2 coincides with the center line of the clevis 1. The end part of the guide rod 2 is provided with a flat head part 201; the spring 3 is arranged between the U-shaped clamp 1 and the guide rod 2, the guide rod 2 and the U-shaped clamp 1 are supported by the spring 3, one end of the spring 3 is propped against the U-shaped clamp 1, and the other end of the spring 3 is propped against the flat head portion 201.

As shown in fig. 3, the clamping block portion 4 includes a first clamping block 401 and a second clamping block 402 having the same structure; the first clamping block 401 and the second clamping block 402 are symmetrically arranged in the U-shaped clamp 1, the upper ends of the first clamping block 401 and the second clamping block 402 prop against the flat head part 201, and the lower side parts of the first clamping block 401 and the second clamping block 402 are respectively arranged on two clamping feet 101 of the U-shaped clamp 1 in a sliding manner; since the front end of the clamping leg 101 gradually inclines toward the center line of the clevis, the flat head 201 is pressed down by the spring 3, and the flat head 201 pushes the first clamping block 401 and the second clamping block 402 to move downward along the clevis 1 while clamping inward.

As shown in fig. 3 and 7, in order to guide the movement of the first clamping block 401 and the second clamping block 402 on the U-shaped clamp 1, a first guide groove 102 is arranged on the inner side of the clamping leg 101; a raised first guide rail 4011 is disposed on an outer side portion of the first clamping block 401, and the first clamping block 401 can move along the clamping leg 101 by the cooperation of the first guide rail 4011 and the first guide groove 102. The second clamp block 402 is identical in structure to the first clamp block 401.

As shown in fig. 6 and 8, in order to guide the horizontal movement of the first clamping block 401 and the second clamping block 402 on the flat head portion 201, the flat head portion 201 is provided with a second elongated guide rail 202; the bottom of the first clamping block 401 is provided with a U-shaped second guide groove 4012, and since the second clamping block 402 has the same structure as the first clamping block 401, the second guide grooves 4012 at the bottoms of the first clamping block 401 and the second clamping block 402 are spliced together left and right to form a long strip-shaped guide groove to be matched with the second guide rail 202. The first clamping block 401 is guided to move horizontally along the flat head portion 201 by the cooperation of the second guide groove 4012 and the second guide rail 202.

The first clamping block 401 and the second clamping block 402 are pushed to the front end of the U-shaped clamp under the action of the elastic force of the spring 3, and the first clamping block 401 and the second clamping block 402 are combined, and at this time, the natural state of the clamping device is achieved. The cylindrical head parts of the upper U-shaped clamp and the lower U-shaped clamp 1 are fixedly connected with the main body of the stretcher, and the cylindrical head parts are provided with threaded connectors so as to be connected.

In a specific embodiment, the heads of the first clamping block 401 and the second clamping block 402 are provided with saw-toothed surfaces 4014, so as to facilitate clamping a rectangular tensile sample.

In one embodiment, the first clamping block 401 and the second clamping block 402 are provided with a V-shaped clamping groove 4013 at the center of the head for clamping a round test bar.

The heads of the first block 401 and the second block 402 may also be provided with a saw-toothed surface 4014 and a V-shaped clamp groove 4013.

When a sample needs to be clamped, the end faces of the first clamping block 401 and the second clamping block 402 are lightly pressed by hands, the first clamping block 401 and the second clamping block 402 can move towards the root of the U-shaped clamp 1 under the guiding action of the first guide rail 4011 and the first guide groove 102, meanwhile, the first clamping block 401 and the second clamping block 402 horizontally move towards two sides respectively under the action of the second guide groove 4012 to form a gap, and at the moment, the clamping end of the tensile sample can be placed into the gap.

The force of pressing the end faces of the first clamping block 401 and the second clamping block 402 by hands is removed, and the first clamping block 401 and the second clamping block 402 are combined towards the middle under the action of the spring 3, so that the sample is clamped. And adjusting the distance between the upper clamping mechanism and the lower clamping mechanism of the stretcher, clamping the other end of the tensile sample to the clamping mechanism at the other end by adopting the same method, finishing the clamping work of the tensile sample, and then performing a tensile test on the sample. As the tensile force of the stretcher is increased, the sample is firmly clamped, so that the sample cannot slip. After the sample piece is broken, the end faces of the first clamping block 401 and the second clamping block 402 are pressed by hand, the distance between the first clamping block 401 and the second clamping block 402 is increased, and the sample can be taken down easily.

The utility model discloses simple structure, convenient operation, grip block can be simultaneously centre gripping rectangle test block and circular test bar, realized the quick clamping and the dismantlement of sample, and the sample slippage problem can not appear.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the examples, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims

1. A tensile test holding apparatus comprising first and second parts of identical construction for holding respective ends of a tensile test specimen, the first part comprising:

the U-shaped clamp (1) comprises two clamp feet (101) and a connecting part in the middle, and the front ends of the clamp feet (101) gradually incline to the central line of the U-shaped clamp;

the guide rod (2) penetrates through the U-shaped clamp (1) and can move up and down on the U-shaped clamp (1); the end part of the guide rod (2) is provided with a flat head part (201);

the spring (3) is arranged between the U-shaped clamp (1) and the guide rod (2), one end of the spring (3) is propped against the U-shaped clamp (1), and the other end of the spring (3) is propped against the flat head part (201);

a clamping block part (4) comprising a first clamping block (401) and a second clamping block (402) which have the same structure; the first clamping block (401) and the second clamping block (402) are symmetrically arranged in the U-shaped clamp (1), the upper ends of the first clamping block (401) and the second clamping block (402) abut against the flat head part (201), and the lower side parts of the first clamping block (401) and the second clamping block (402) are respectively arranged on two clamping legs (101) of the U-shaped clamp (1) in a sliding manner;

the flat head part (201) is pressed down through the spring (3), and the flat head part (201) pushes the first clamping block (401) and the second clamping block (402) to move downwards along the U-shaped clamp (1) and simultaneously clamp inwards.

2. The tensile test holding apparatus according to claim 1, wherein a first guide groove (102) is provided on an inner side of the holding leg (101); the outer side of the first clamping block (401) is provided with a first guide rail (4011), and the first clamping block (401) can move along the clamping foot (101) through the cooperation of the first guide rail (4011) and the first guide groove (102).

3. The tensile test holding apparatus of claim 1, wherein said flat head portion (201) is provided with a second guide rail (202); the bottom of the first clamping block (401) is provided with a second guide groove (4012), and the first clamping block (401) is guided to move horizontally along the flat head portion (201) through the cooperation of the second guide groove (4012) and the second guide rail (202).

4. The tensile test holding device of claim 1, wherein the head of the first clamping block (401) is provided with a serrated surface (4014) for holding a rectangular test piece.

5. The tensile test holding apparatus according to claim 1 or 4, wherein a V-shaped holding groove (4013) for holding a round test bar is provided in the center of the head of the first holding block (401).

6. Tensile test fixture according to claim 1, wherein the centre line of the guide bar (2) coincides with the centre line of the clevis (1).

7. The tensile test clamping device according to claim 1, wherein a threaded connector is provided at the upper end of the clevis (1).