Wedge-shaped clamp of tensile machine

Abstract

The utility model relates to a wedge-shaped clamp, in particular to a tensile machine wedge-shaped clamp which comprises an outer clamp body, inner clamp bodies, a bidirectional screw rod, a clamping block and the like, the two inner clamp bodies are connected in the outer clamp body in a sliding mode, the bidirectional screw rod is connected to the outer clamp body in a rotating mode, and the bidirectional screw rod is connected with the inner clamp bodies through threads. The two inner clamp bodies are each provided with a plurality of first limiting grooves, the two clamping blocks are each connected with a plurality of first limiting blocks, the first limiting blocks are located in the first limiting grooves, and the clamping blocks are used for clamping samples. According to the utility model, the two clamping blocks can move towards the direction close to each other by rotating the two-way screw rod to clamp a sample, and then the tensile machine pulls the sample and pushes the baffle block, so that the clamping blocks can be loosened, and the clamping blocks with other specifications can be replaced so as to adapt to different types of samples, so that the application range is wider.

Description

Technical Field

[0001] The utility model relates to a wedge-shaped clamp, in particular to a wedge-shaped clamp of a tensile machine. Background Art

[0002] The tensile machine, also known as the tensile testing machine, is a device that tests the mechanical properties of various materials such as static load, tension, compression, and bending. The tensile machine clamps the specimen through a wedge-shaped fixture to test the specimen.

[0003] The patent with publication number CN208636142U discloses a wedge-shaped clamp on a tensile testing machine, including a clamp body, a positive thread is opened on the outer side of the top of the clamp body, a first lifting nut is connected to the outer side of the positive thread, a core shaft is connected to the top of the clamp body, a reverse thread is opened on the bottom of the outer side of the core shaft, a second lifting nut is connected to the outer side of the reverse thread, and a first circular hole is opened on the surface of the reverse thread.

[0004] The above patent clamps the sample by means of a clamp body, however, the clamp body is an integrated arrangement and its structure cannot be changed. In actual use, different types of samples often need to be tested, and the structure of the clamp body cannot be changed, so different types of samples cannot be clamped, and the scope of application is limited. Utility Model Content

[0005] In order to overcome the shortcomings that the structure of the clamp body cannot be changed, different types of specimens cannot be clamped, and the application range is limited, the utility model provides a wedge-shaped clamp for a tensile machine.

[0006] Technical solution: A wedge-shaped clamp of a tensile testing machine, comprising an outer clamping body, an inner clamping body, a bidirectional screw, a clamping block, a limit block 1, a limit block 2, a stopper, an elastic member 1 and a clamping mechanism. Two inner clamping bodies are slidably connected in the outer clamping body, a bidirectional screw is rotatably connected to the outer clamping body, the bidirectional screw and the inner clamping body are connected by threads, a plurality of limit grooves 1 are opened on the two inner clamping bodies, a plurality of limit blocks 1 are connected to the two clamping blocks, the limit block 1 is located in the limit groove 1, the clamping block is used to clamp the specimen, a plurality of limit blocks 2 are connected to the front side and the bottom of the clamping block, a stopper for blocking the clamping block is slidably connected to the front side and the bottom of the inner clamping body, a plurality of limit grooves 2 are opened on the stopper, the limit block 2 is located in the limit groove 2, an elastic member 1 is connected between the inner clamping body and the stopper, the stopper is reset by the elastic member 1, and the clamping mechanism is used to clamp the stopper.

[0007] In a preferred embodiment of the utility model, the clamping mechanism includes a wedge-shaped contact block, a wedge-shaped clamping block and elastic member 2, two wedge-shaped contact blocks are connected to the stop block, the front side and the bottom of the inner clamp body are slidably connected to two wedge-shaped clamping blocks for clamping the wedge-shaped contact blocks, and elastic member 2 is connected between the wedge-shaped clamping block and the inner clamp body, and the wedge-shaped clamping block is reset by elastic member 2.

[0008] In a preferred embodiment of the utility model, it also includes a loading mechanism, which includes a placement plate, a placement rail, a partition block, a mounting frame, a push rod and a push block. The rear side of the outer clamp is connected to a placement plate for placing the clamp block, and two placement rails for placing clamp blocks of other specifications are connected to the placement plate. The placement rails are connected to partition blocks, and the partition blocks are used to separate the clamp blocks on the placement rails. The placement plate is connected to a mounting frame, and the mounting frame is slidably connected to a push rod, and the push rod is connected to a push block. An opening is opened on the placement plate for the push block to pass through. The push block passes through the opening into the placement plate and pushes the clamp block on the placement rail onto the inner clamp.

[0009] In a preferred embodiment of the utility model, a connecting rod is also included, and the connecting rod is connected between the two wedge-shaped blocks on the same side.

[0010] In a preferred embodiment of the utility model, a round hole is opened on the bidirectional screw rod.

[0011] In a preferred embodiment of the present invention, the first limiting groove, the second limiting groove, the first limiting block and the second limiting block are all isosceles trapezoids.

[0012] The beneficial effects of the utility model are as follows: 1. The utility model can move the two clamping blocks towards each other by rotating the bidirectional screw rod to clamp the sample. Then the tensile machine pulls the sample and pushes the stopper to release the clamping blocks. Clamping blocks of other specifications can be replaced to adapt to different types of samples, and the scope of application is wider.

[0013] 2. By pushing the push rod forward, the push block can be driven to move forward, and the push block pushes the clamping block on the placement rail to move forward. The clamping block on the placement rail pushes the clamping block on the inner clamp body, so that the clamping block on the inner clamp body moves forward and detaches from the inner clamp body, making it easy to replace the clamping block. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0015] Figure 2 It is a three-dimensional structural schematic diagram of the limiting groove 1, the stopper, the limiting groove 2 and the elastic member 1 of the utility model.

[0016] Figure 3 It is a three-dimensional structural schematic diagram of the clamping block, the first limiting block and the second limiting block of the utility model.

[0017] Figure 4 It is a three-dimensional structural schematic diagram of the clamping mechanism of the utility model.

[0018] Figure 5 It is a schematic diagram of the first three-dimensional structure of the feeding mechanism of the utility model.

[0019] Figure 6 It is a second three-dimensional structural schematic diagram of the feeding mechanism of the utility model.

[0020] Figure 7 It is a cross-sectional view of the placement plate of the utility model.

[0021] Among them, the above-mentioned drawings include the following figure marks: 1. outer clamp concrete, 2. inner clamp concrete, 3. bidirectional screw rod, 4. limit groove one, 5. clamping block, 6. limit block one, 7. limit block two, 8. stop block, 9. limit groove two, 10. elastic member one, 111. wedge-shaped contact block, 112. wedge-shaped clamping block, 113. elastic member two, 114. connecting rod, 121. placement plate, 122. placement rail, 123. partition block, 124. mounting frame, 125. push rod, 126. push block, 13. round hole. DETAILED DESCRIPTION

[0022] Although the present invention may be described with respect to a specific application or industry, those skilled in the art will recognize the broader applicability of the present invention. Those of ordinary skill in the art will recognize that terms such as: above, below, upward, downward, etc. are used to describe the drawings and do not represent limitations on the scope of the present invention as defined by the appended claims. Any numerical designations such as: first or second are merely exemplary and are not intended to limit the scope of the present invention in any way.

[0023] Example: Figure 1-Figure 4As shown, a wedge-shaped clamp of a tensile machine includes an outer clamp body 1, an inner clamp body 2, a bidirectional screw rod 3, a clamp block 5, a limit block 6, a limit block 7, a stopper 8, an elastic member 10 and a clamping mechanism. The inner clamp body 2 is slidably connected to the left and right sides of the outer clamp body 1, and the middle part of the outer clamp body 1 is rotatably connected to the bidirectional screw rod 3. The bidirectional screw rod 3 and the inner clamp body 2 are connected by threads. The left and right parts of the bidirectional screw rod 3 are both provided with round holes 13. The sides of the two inner clamp bodies 2 that are close to each other are both provided with a plurality of limit grooves 4, and the sides of the two clamp blocks 5 that are away from each other are both provided with a plurality of limit grooves 4. A plurality of limit blocks 6 are connected, and the limit block 6 is located in the limit groove 4. The front side and the bottom of the clamping block 5 are connected with a plurality of limit blocks 2 7. The front side and the bottom of the inner clamping body 2 are slidably connected with a stopper 8. A plurality of limit grooves 2 9 are opened on the side of the stopper 8 close to the inner clamping body 2. The limit block 27 is located in the limit groove 29. The limit groove 4, the limit groove 29, the limit block 6 and the limit block 27 are all isosceles trapezoids. Two elastic parts 10 are connected between the inner clamping body 2 and the stopper 8. The elastic part 10 is a spring, and the clamping mechanism is used to clamp the stopper 8.

[0024] like Figure 4 As shown, the clamping mechanism includes a wedge-shaped contact block 111, a wedge-shaped clamping block 112 and an elastic member 113. Two wedge-shaped contact blocks 111 are connected to the stop block 8. Two wedge-shaped clamping blocks 112 are slidably connected to the front side and the bottom of the inner clamp body 2. An elastic member 113 is connected between the wedge-shaped clamping block 112 and the inner clamp body 2. The elastic member 113 is a spring.

[0025] like Figure 5-Figure 7 As shown, it also includes a loading mechanism, which includes a placement plate 121, a placement rail 122, a partition block 123, a mounting frame 124, a push rod 125 and a push block 126. The placement plate 121 is connected to the lower rear part of the outer clamp body 1, the placement rail 122 is connected to the upper and lower sides of the inner rear side of the placement plate 121, the partition block 123 is connected to the middle part of the front side of the placement rail 122, the mounting frame 124 is connected to the middle part of the rear side of the placement plate 121, the mounting frame 124 is slidably connected to the push rod 125, the front end of the push rod 125 is connected to the push block 126, and an opening is opened in the middle part of the rear side of the placement plate 121 for the push block 126 to pass through.

[0026] like Figure 4 As shown, a connecting rod 114 is also included, and the connecting rod 114 is connected between the two wedge-shaped blocks 112 on the same side.

[0027] The wedge-shaped clamp is connected to the tensile machine through the outer clamp body 1, and then the sample is placed between the two clamp blocks 5. The tool is inserted into the round hole 13, and the two-way screw rod 3 is rotated by the tool to move the two clamp blocks 5 in the direction of approaching each other to clamp the sample. Then the tensile machine pulls the sample. When other types of samples need to be clamped, other specifications of the clamp blocks 5 can be replaced to adapt to different types of samples, and the scope of application is wider. The staff puts the two required clamp blocks 5 on the placement rail 122. , the separator 123 separates the two clamping blocks 5, and the separator 123 can position the clamping block 5, so that the limit block 16 is aligned with the limit groove 14, and then the stop block 8 is pushed so that the stop block 8 no longer blocks the clamping block 5 on the inner clamp body 2, the elastic member 10 is compressed, and the wedge-shaped contact block 111 moves with the stop block 8. The wedge-shaped contact block 111 will contact the wedge-shaped block 112 during the movement. Under the action of the elastic member 113, the wedge-shaped contact block 111 can pass over the wedge-shaped block 112, and then the wedge-shaped block 1 12 is reset under the action of the second elastic member 113, and the wedge-shaped contact block 111 is stuck, so that the stopper 8 cannot be reset, which is convenient for replacing the clamping block 5. At this time, the limiting groove 29 and the limiting block 27 are disengaged, and the staff pushes the push rod 125 forward again, and the push rod 125 drives the push block 126 to move forward. The push block 126 passes through the opening and enters the placement plate 121, and pushes the clamping block 5 on the placement rail 122 to move forward. The clamping block 5 on the placement rail 122 pushes the clamping block 5 on the inner clamping body 2, so that the clamping block on the inner clamping body 2 5 moves forward and disengages from the inner clamp body 2, which is convenient for replacing the clamp block 5. The limiting block 16 on the clamp block 5 on the placement rail 122 enters the limiting groove 14, and then the wedge-shaped clamping block 112 is pushed by the connecting rod 114, so that the wedge-shaped clamping block 112 releases the wedge-shaped contact block 111. Under the action of the elastic member 10, the stopper 8 is reset. At this time, the limiting groove 29 and the limiting block 27 cooperate, and the limiting groove 14, the limiting groove 29, the limiting block 16 and the limiting block 27 are all isosceles trapezoids, so that the clamp block 5 can be limited.

[0028] Those skilled in the art should understand that the above embodiments do not limit the present invention in any form, and any technical solutions obtained by equivalent replacement or equivalent transformation shall fall within the protection scope of the present invention.

Claims

1. A wedge-shaped clamp for a tensile testing machine, comprising an outer clamp body (1) and an inner clamp body (2), wherein two inner clamp bodies (2) are slidably connected inside the outer clamp body (1), and characterized in that: The invention also comprises a bidirectional screw rod (3), a clamping block (5), a limiting block 1 (6), a limiting block 2 (7), a stopper (8), an elastic member 1 (10) and a clamping mechanism. The outer clamping body (1) is rotatably connected with the bidirectional screw rod (3). The bidirectional screw rod (3) and the inner clamping body (2) are connected by threads. The two inner clamping bodies (2) are each provided with a plurality of limiting grooves 1 (4). The two clamping blocks (5) are each connected with a plurality of limiting blocks 1 (6). The limiting blocks 1 (6) are located in the limiting grooves 1 (4). The clamping blocks (5) are connected to the inner clamping body (2). ) is used to clamp the sample, the front side and the bottom of the clamp block (5) are connected to a plurality of limit blocks (7), the front side and the bottom of the inner clamp body (2) are slidably connected to a stop block (8) for blocking the clamp block (5), a plurality of limit grooves (9) are opened on the stop block (8), the limit block (7) is located in the limit groove (9), an elastic member (10) is connected between the inner clamp body (2) and the stop block (8), the stop block (8) is reset by the elastic member (10), and the clamping mechanism is used to clamp the stop block (8).

2. A wedge-shaped clamp for a tensile machine according to claim 1, characterized in that: The clamping mechanism comprises a wedge-shaped contact block (111), a wedge-shaped clamping block (112) and a second elastic member (113); the stopper (8) is connected to two wedge-shaped contact blocks (111); the front side and the bottom of the inner clamp body (2) are slidably connected to two wedge-shaped clamping blocks (112) for clamping the wedge-shaped contact blocks (111); the second elastic member (113) is connected between the wedge-shaped clamping block (112) and the inner clamp body (2); and the wedge-shaped clamping block (112) is reset by the second elastic member (113).

3. A wedge-shaped clamp for a tensile machine according to claim 2, characterized in that: The invention also comprises a feeding mechanism, which comprises a placing plate (121), a placing rail (122), a dividing block (123), a mounting frame (124), a push rod (125) and a pushing block (126). The rear side of the outer clamp body (1) is connected to a placing plate (121) for placing a clamp block (5). The placing plate (121) is connected to two placing rails (122) for placing clamp blocks (5) of other specifications. The placing rails (122) are both connected to dividing blocks (123). The dividing blocks (123) are connected to the placing rails (122). 23) is used to separate the clamping block (5) on the placement rail (122), the placement plate (121) is connected to a mounting frame (124), the mounting frame (124) is slidably connected to a push rod (125), the push rod (125) is connected to a push block (126), the placement plate (121) is provided with an opening for the push block (126) to pass through, the push block (126) passes through the opening and enters the placement plate (121), and pushes the clamping block (5) on the placement rail (122) onto the inner clamp body (2).

4. A wedge-shaped clamp for a tensile machine according to claim 3, characterized in that: It also includes a connecting rod (114), and the connecting rod (114) is connected between the two wedge-shaped blocks (112) on the same side.

5. A wedge-shaped clamp for a tensile machine according to claim 4, characterized in that: A round hole (13) is formed on the bidirectional screw rod (3).

6. A wedge-shaped clamp for a tensile machine according to claim 5, characterized in that: The limiting groove 1 (4), the limiting groove 2 (9), the limiting block 1 (6) and the limiting block 2 (7) are all isosceles trapezoids.

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