A clamp for a wire terminal tensile test

Abstract

This application provides a clamp for tensile testing of terminal blocks, relating to the field of terminal block testing technology. The clamp for tensile testing of terminal blocks includes: a first clamp; a second clamp, the first and second clamps being connected, at least one of the first and second clamps being movable relative to the other to move closer to or further away from each other; two clamping members, each of the first and second clamps being detachably mounted on a clamping member, each clamping member having a receiving portion, the receiving portions on the first and second clamps being oppositely arranged and together forming a receiving cavity that matches the component to be clamped; the two clamping members are configured such that, driven by at least one of the first and second clamps, they move closer to each other to jointly clamp the component to be clamped, or move further away from each other to release the component to be clamped. The component to be clamped is placed in the receiving cavity, and the receiving cavity matches the outer wall of the component to be clamped, so that the component to be clamped can be subjected to uniform force during the tensile test, and the component to be clamped is not easily broken when a large clamping force is used.

Description

Technical Field

[0001] This application relates to the field of terminal block testing technology, and in particular to a fixture for tensile testing of terminal blocks. Background Technology

[0002] In the fields of railways, power, and communications, the crimping quality of terminals directly affects the safety and reliability of electrical connections. In railway systems, conductors and tubular crimp terminals are crimped together to form tubular crimped joints. The mechanical strength and tensile properties of these tubular crimped joints need to be verified through tensile testing.

[0003] In the prior art, the clamps commonly used for tensile testing are clamp-type clamps. Clamp-type clamps consist of two parallel metal plates. The jaws of the metal plates are in line contact with the specimen of the tubular crimping joint. Clamping is achieved by mechanical bolts, pneumatic or hydraulic drive. The specimen is placed vertically between the clamps and fixed by lateral clamping force.

[0004] Because the wire end and terminal end of the tubular crimp connector are flush, and the clamping part of the sample is tubular, the contact position between the jaws of the aforementioned clamp and the sample is a straight line, resulting in line contact between the sample and the jaws. When the clamping force is too small, the sample to be clamped will fall off the jaws during the tensile test. When a larger clamping force is used, the sample to be clamped will be broken during the tensile test, which has the disadvantage of difficult control of clamping force. Summary of the Invention

[0005] This application provides a clamp for tensile testing of terminal blocks to solve the problem of difficulty in controlling the clamping force.

[0006] On the one hand, this application provides a clamp for tensile testing of terminal blocks, including: a first clamp;

[0007] A second clamp, wherein the first clamp and the second clamp are connected, and at least one of the first clamp and the second clamp moves relative to the other to move closer to or further away from each other;

[0008] Two clamping components are provided, and the clamping components are detachably mounted on the first clamp and the second clamp. Each clamping component is provided with a receiving portion. The receiving portions on the first clamp and the second clamp are arranged opposite to each other and together form a receiving cavity that matches the object to be clamped.

[0009] The two clamping members are configured to move closer to each other to jointly clamp the object to be clamped, or to move further apart from each other to release the object to be clamped, under the action of at least one of the first clamping clamp and the second clamping clamp.

[0010] In one possible implementation, the terminal tensile test fixture provided in this application has a receiving portion that is a receiving groove, and the two ends of the receiving groove in the extending direction are connected to the two ends of the clamping member.

[0011] And / or, the clamping member is provided with at least two of the receiving portions, and the extension directions of the at least two receiving grooves are parallel to each other.

[0012] In one possible implementation, the terminal tensile testing fixture provided in this application has a mounting portion on at least one of the first clamp and the second clamp, and the clamping member is detachably connected to the mounting portion.

[0013] In one possible implementation, the terminal tensile test fixture provided in this application has a mounting part that is a support arm, a clamping member that includes a support part and a clamping part disposed on the support part, and a receiving part disposed on the clamping part;

[0014] The support portion is disposed on the support arm, and the side of the clamping member opposite to the receiving portion abuts against the end of the support arm.

[0015] In one possible implementation, the terminal tensile test fixture provided in this application has a limiting groove on one side of the first clamp and the second clamp relative to the other, and a portion of the support portion is inserted into the limiting groove and abuts against the bottom of the limiting groove.

[0016] In one possible implementation, the terminal tensile test fixture provided in this application further includes a connector, the mounting part has a first mounting hole, the clamping member has a second mounting hole, and when the support part abuts against the bottom of the limiting groove, the axes of the first mounting hole and the second mounting hole are on the same straight line.

[0017] The connector is connected to the first mounting hole via the second mounting hole, and the clamping member and the mounting part are detachably connected.

[0018] In one possible implementation, the terminal tensile test fixture provided in this application further includes a mounting member, wherein both the first clamp and the second clamp are hinged to the mounting member.

[0019] In one possible implementation, the terminal tensile test fixture provided in this application further includes a connecting pin. The mounting component includes a first connecting portion and a second connecting portion disposed on the first connecting portion. The first connecting portion is used to connect with a tensile testing machine. The second connecting portion is provided with a plurality of through holes, which are arranged at intervals along the extending direction of the second connecting portion.

[0020] The connecting pin is inserted into one of the through holes, and the first clamp and the second clamp are hinged together by the connecting pin.

[0021] In one possible implementation, the terminal tensile test fixture provided in this application further includes an adjusting member, which is inserted into the first clamp and the second clamp. The adjusting member rotates relative to the first clamp and the second clamp to bring the first clamp and the second clamp closer to each other or further away from each other.

[0022] In one possible implementation, the terminal tensile test fixture provided in this application further includes an elastic element, which is sleeved on the adjusting member, located between the first clamp and the second clamp, and the two ends of the elastic element extending in opposite directions abut against the first clamp and the second clamp, respectively.

[0023] This application provides a clamp for tensile testing of terminal blocks. The clamp comprises a first clamp, a second clamp, and two clamping members. The first clamp and the second clamp are connected, and the clamping members are detachably mounted on both clamps. At least one of the first and second clamps can move relative to the other, moving closer or further apart. The two clamping members are disposed opposite to the first and second clamps, and each clamping member has a receiving portion. The two opposing receiving portions together form a receiving cavity that matches the workpiece to be clamped. The two clamping members are configured to move closer together to clamp the workpiece under the action of at least one of the first and second clamps, or to move further apart to release the workpiece. The workpiece is placed in the receiving cavity, and the receiving cavity matches the outer wall of the workpiece, such that the contact surface between the workpiece and the clamp at the jaw position is the outer wall of the workpiece. Compared to the existing technology where parallel jaws make line contact with the workpiece, the clamping force is too small, causing the workpiece to fall off the jaws during a tensile test, while a larger clamping force can cause the workpiece to break during a tensile test. The clamping force is also difficult to control. In this application, the contact area between the jaws and the workpiece is larger, which allows the workpiece to be subjected to uniform force during a tensile test. The workpiece is also less likely to break when a larger clamping force is used, thus solving the problem of the workpiece easily breaking during a tensile test. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0025] Figure 1 A schematic diagram of the structure of the clamp for the tensile test of the terminal blocks provided in this application;

[0026] Figure 2 for Figure 1Schematic diagram of the middle mounting component;

[0027] Figure 3 for Figure 1 A schematic diagram of the structure of the first clamp in the middle;

[0028] Figure 4 for Figure 1 A schematic diagram of the structure of the second clamp;

[0029] Figure 5 for Figure 1 A schematic diagram of the structure of the clamping component.

[0030] Explanation of reference numerals in the attached figures:

[0031] 100 - First clamp;

[0032] 110 - Mounting part; 111 - First mounting hole; 120 - Limiting groove;

[0033] 200 - Second clamp;

[0034] 300 - Clamping component;

[0035] 310 - Receiving part; 311 - Receiving cavity;

[0036] 320 - Support part; 321 - Second mounting hole;

[0037] 330 - Clamping part; 340 - Connecting part;

[0038] 400 - Mounting part; 410 - Connecting pin; 420 - First connecting part;

[0039] 430 - Second connecting part; 431 - Through hole;

[0040] 500 - Adjusting element; 510 - Elastic element.

[0041] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0043] In the embodiments of this application, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this application according to the specific circumstances.

[0044] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0045] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in a sequence other than those illustrated or described herein.

[0046] In this application, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0047] Unless otherwise stated, the term "multiple" means two or more.

[0048] In the fields of railways, power, and communications, the crimping quality of terminals directly affects the safety and reliability of electrical connections. In railway systems, conductors and tubular crimp terminals are crimped together to form tubular crimped joints. The mechanical strength and tensile properties of these tubular crimped joints need to be verified through tensile testing.

[0049] In existing technologies, tensile testing typically uses clamp-type fixtures. These fixtures consist of two parallel metal plates. The jaws of the metal plates make planar contact with the specimen of the tubular crimp connector, and clamping is achieved through mechanical bolts, pneumatic or hydraulic drive. The specimen is placed vertically between the plates and fixed by lateral clamping force. Because the wire ends and terminal ends of the tubular crimp connector are flush, there is a lack of clamping space required by traditional clamping methods. This makes it difficult for existing fixtures to achieve stable clamping. Insufficient clamping force will cause the specimen to detach from the jaws during the tensile test, while excessive clamping force may cause the specimen to break during the tensile test. This results in a difficulty in controlling the clamping force.

[0050] Based on this, this application provides a clamp for tensile testing of terminal blocks. The clamp comprises a first clamp, a second clamp, and two clamping members. The first clamp and the second clamp are connected, and the clamping members are detachably mounted on both the first and second clamps. At least one of the first and second clamps can move relative to the other to move closer to or further away from each other. The two clamping members are disposed opposite to the first and second clamps, and each clamping member has a receiving portion. The two opposing receiving portions together form a receiving cavity that matches the part to be clamped. The two clamping members are configured to move closer to each other to clamp the part to be clamped, or to move further away from each other to release the part to be clamped, driven by at least one of the first and second clamps. The part to be clamped is placed in the receiving cavity, and the receiving cavity matches the outer wall of the part to be clamped, such that the contact surface between the part to be clamped and the clamp at the jaw position is the outer wall of the part to be clamped. Compared to the existing technology where parallel jaws make line contact with the workpiece, the clamping force is too small, causing the workpiece to fall off the jaws during a tensile test, while a larger clamping force can cause the workpiece to break during a tensile test. The clamping force is also difficult to control. In this application, the contact area between the jaws and the workpiece is larger, which allows the workpiece to be subjected to uniform force during a tensile test. The workpiece is also less likely to break when a larger clamping force is used, thus solving the problem of the workpiece easily breaking during a tensile test.

[0051] The embodiments of the present invention are described below with reference to the accompanying drawings.

[0052] Reference Figures 1 to 5 As shown, in some embodiments, the clamp for the terminal tensile test includes: a first clamp 100; a second clamp 200, the first clamp 100 and the second clamp 200 being connected, and at least one of the first clamp 100 and the second clamp 200 being movable relative to the other to move closer to or further away from each other.

[0053] Two clamping members 300 are detachably mounted on the first clamp 100 and the second clamp 200. Each clamping member 300 is provided with a receiving portion 310. The receiving portions 310 on the first clamp 100 and the second clamp 200 are arranged opposite to each other and together form a receiving cavity 311 that matches the object to be clamped. The two clamping members 300 are configured to move closer to each other to jointly clamp the object to be clamped, or move away from each other to release the object to be clamped, under the action of at least one of the first clamp 100 and the second clamp 200.

[0054] This embodiment provides a clamp for tensile testing of terminal blocks, used for tensile testing of crimped joints. The crimped joint is placed in the receiving cavity 311, and at least one of the first clamp 100 and the second clamp 200 is moved to move the two clamping members 300 closer or further away, thereby clamping or releasing the crimped joint.

[0055] In practical implementation, the first clamp 100 and the second clamp 200 can be made of materials with high wear resistance and tensile strength. For example, the first clamp 100 and the second clamp 200 can be made of 45# hot-rolled steel, which achieves tensile strength while also being easy to obtain.

[0056] Both the first clamp 100 and the second clamp 200 can be C-shaped structures. The first clamp 100 and the second clamp 200 are placed opposite each other, with their openings facing the other. The first clamp 100 and the second clamp 200 work together to form a clamp to hold the object to be clamped. The object to be clamped is placed in the jaws formed by the first clamp 100 and the second clamp 200. By moving at least one of the first clamp 100 and the second clamp 200 closer to or further away from the other, the object to be clamped can be clamped or released.

[0057] In this embodiment, two clamping members 300 are provided. The clamping members 300 can be made of the same material as the first clamp 100 and the second clamp 200, or they can be made of a material with higher tensile strength. For example, the clamping member 300 is made of the same material as the first clamp 100, namely 45# hot-rolled steel. The clamping member 300 has the same strength as the first clamp 100, which makes material selection convenient.

[0058] A clamping member 300 is provided at the end of the jaws of the first clamp 100 and the second clamp 200. The clamping member 300 is provided with a receiving part 310. After the clamping member 300 on the first clamp 100 and the clamping member 300 on the second clamp 200 approach each other, the two receiving parts 310 form a receiving cavity 311. The object to be clamped is placed into the receiving cavity 311. By moving at least one of the first clamp 100 and the second clamp 200 to the other, at least one of the clamping members 300 on the first clamp 100 and the second clamp 200 is moved to the other, thereby moving the two receiving parts 310. Finally, the receiving cavity 311 is used to abut against the object to be clamped, thus achieving accurate positioning of the object to be clamped.

[0059] This application provides a clamp for tensile testing of terminal blocks. The clamp comprises a first clamp 100, a second clamp 200, and two clamping members 300. The first clamp 100 and the second clamp 200 are connected, and the clamping members 300 are detachably mounted on both the first clamp 100 and the second clamp 200. At least one of the first clamp 100 and the second clamp 200 can move relative to the other to move closer to or further away from each other. The two clamping members 300 are disposed opposite to the first clamp 100 and the second clamp 200, and each clamping member 300 is provided with a receiving portion 310. The two opposite receiving portions 310 together form a receiving cavity 311 that matches the part to be clamped. The two clamping members 300 are configured to move closer to each other to clamp the part to be clamped, or move further away from each other to release the part to be clamped, under the action of at least one of the first clamp 100 and the second clamp 200. The workpiece to be clamped is placed in the receiving cavity 311, and the receiving cavity 311 matches the outer wall of the workpiece to be clamped, so that the contact surface between the workpiece and the clamping jaws at the jaw position is the outer wall of the workpiece to be clamped. Compared with the existing technology where the parallel jaws make line contact with the workpiece to be clamped, the clamping force is too small and the workpiece to be clamped will fall off the jaws during the tensile test, while the clamping force is too large and the workpiece to be clamped will break during the tensile test. The clamping force is difficult to control. In this application, the contact surface between the jaws and the workpiece to be clamped is larger, so that the workpiece to be clamped can be subjected to uniform force during the tensile test. The workpiece to be clamped is not easy to break when a larger clamping force is used, thus solving the problem of the workpiece to be clamped easily breaking during the tensile test.

[0060] Reference Figure 1 and Figure 5 As shown, in some embodiments, the receiving portion 310 is a receiving groove, and the two ends of the receiving groove in the extending direction are connected to the two ends of the clamping member 300; at least two receiving portions 310 are provided on the clamping member 300, and the extending directions of the at least two receiving grooves are parallel to each other.

[0061] In this embodiment, the receiving portion 310 can be a receiving groove, and the two ends of the receiving groove in the extending direction are connected to the two ends of the clamping member 300. That is to say, the receiving groove can be a through groove with the same height as the clamping member 300. The part to be clamped is placed parallel to the receiving groove, so that the outer shell of the part to be clamped is completely fitted with the receiving groove, thereby fixing the part to be clamped in the position of the jaws and solving the problem of difficulty in aligning the part to be clamped.

[0062] In a specific implementation, the clamping member 300 may be provided with at least two receiving portions 310, which are arranged in parallel along the length of the clamping member 300, so that at least two clamping parts can be stretched in a single tensile test. Multiple sets of clamping members 300 may also be provided, and the receiving portions 310 on different clamping members 300 can be adapted to different types of clamping parts, allowing this embodiment to clamp different types of clamping parts, thus expanding the applicability of this embodiment.

[0063] Specifically, in order to fully fit the outer shell of the part to be clamped, the bottom of the receiving groove can also be arc-shaped. The two receiving grooves work together to completely fix the part to be clamped in the current position. At the same time, the arc-shaped bottom of the receiving groove can fit the outer shell of the part to be clamped. When one of the first clamp 100 and the second clamp 200 moves too far towards the other, the part to be clamped is in the two arc-shaped receiving grooves, and the outer shell is subjected to uniform force, making it less likely to break. This solves the problem of difficult-to-control clamping force.

[0064] Reference Figure 1 and Figure 4 As shown, in some embodiments, at least one of the first clamp 100 and the second clamp 200 is provided with a mounting portion 110, and the clamping member 300 is detachably connected to the mounting portion 110.

[0065] In a specific implementation, in order to install the clamping member 300 on the first clamp 100 and the second clamp 200, a mounting part 110 is provided on at least one of the first clamp 100 and the second clamp 200. The clamping member 300 is detachably connected to the mounting part 110, that is, the clamping member 300 is detachably connected to the mounting part 110, thereby installing the clamping member 300 on the first clamp 100 and the second clamp 200.

[0066] Reference Figure 4 and Figure 5 As shown, in some embodiments, the mounting part 110 is a support arm, the clamping member 300 includes a support part 320 and a clamping part 330 disposed on the support part 320, and the receiving part 310 is disposed on the clamping part 330.

[0067] The support part 320 is disposed on the support arm, and the side of the clamping member 300 facing away from the receiving part 310 abuts against the end of the support arm.

[0068] In this embodiment, the mounting part 110 can be a support arm, that is, it can be a protrusion at the end of the C-shaped structure of the first clamp 100 and the second clamp 200, and can be integrally formed with the first clamp 100 or the second clamp 200.

[0069] Specifically, the clamping member 300 includes a support portion 320 and a clamping portion 330 disposed on the support portion 320, with a receiving portion 310 disposed on the clamping portion 330. The support portion 320 and the clamping portion 330 form an L-shaped clamping member 300. One end of the support portion 320 in the length direction is connected to the side of the clamping portion 330 opposite to the receiving portion 310, and the end face of the support portion 320 in the height direction is flush with the end face of the clamping portion 330 in the height direction. The clamping member 300 is constructed in an L-shape, which has a simple structure and high adaptability.

[0070] The support portion 320 is mounted on the support arm. The side of the support portion 320 that is flush with the end face at the height of the clamping portion 330 contacts the support arm. The side of the clamping member 300 that is away from the receiving portion 310 abuts against the end of the support arm. In other words, the side of the clamping portion 330 that is away from the receiving portion 310 abuts against the end of the support arm so that the clamping member 300 is placed on the support arm, thereby enabling the clamping member 300 to be placed on the first clamp 100 or the second clamp 200.

[0071] Reference Figure 3 and Figure 5 As shown, in some embodiments, a limiting groove 120 is provided on one side of the first clamp 100 and the second clamp 200 relative to the other, and a portion of the support portion 320 is inserted into the limiting groove 120 and abuts against the bottom of the limiting groove 120.

[0072] In a specific implementation, in order to limit the position of the clamping member 300, a limiting groove 120 is provided on one side of the first clamp 100 and the second clamp 200 relative to the other. A portion of the support part 320 is inserted into the limiting groove 120 and abuts against the bottom of the limiting groove 120. That is, the side of the support part 320 that is away from the clamping part 330 abuts against the bottom of the limiting groove 120, so as to increase the limiting conditions of the clamping member 300 and limit the clamping member 300 to the current position.

[0073] Reference Figure 3 and Figure 5 As shown, in some embodiments, this embodiment also includes a connector 340, a first mounting hole 111 on the mounting part 110, a second mounting hole 321 on the clamping part 300, and when the support part 320 abuts against the bottom of the limiting groove 120, the axes of the first mounting hole 111 and the second mounting hole 321 are on the same straight line.

[0074] The connector 340 is connected to the first mounting hole 111 via the second mounting hole 321, and the clamping member 300 and the mounting part 110 are detachably connected.

[0075] In this embodiment, in order to fix the clamping member 300 in the current position, a first mounting hole 111 is provided on the mounting part 110 and a second mounting hole 321 is provided on the clamping member 300. That is, a second mounting hole 321 is provided on the support part 320. When the support part 320 abuts against the bottom of the limiting groove 120, the axes of the first mounting hole 111 and the second mounting hole 321 are on the same straight line, which adds a restrictive condition to the installation position of the clamping member 300.

[0076] In a specific implementation, the connector 340 is passed through the first mounting hole 111 and the second mounting hole 321 in sequence, and the detachable connecting clamp 300 is connected to the mounting part 110. That is, the support part 320 and the mounting part 110 are tightly fitted and connected to fix the clamp 300 in the current position.

[0077] Reference Figure 1 and Figure 2 As shown, in some embodiments, the fixture for the terminal tensile test further includes a mounting member 400, and the first clamp 100 and the second clamp 200 are both hinged to the mounting member 400.

[0078] In this embodiment, the ends of the first clamp 100 and the second clamp 200 opposite to the jaws are hinged to the mounting member 400. The end of the first clamp 100 opposite to the mounting part 110 can be configured as an L-shaped groove, with the side in contact with the mounting member 400 being concave. The mounting member 400 can be placed in the L-shaped groove. The second clamp 200 also has an L-shaped groove at the position opposite to the first clamp 100, with the side in contact with the mounting member 400 being concave. It can be understood that the mounting member 400 is disposed between the first clamp 100 and the second clamp 200. The sides of the first clamp 100 and the second clamp 200 that contact the mounting member 400 are recessed into the side opposite to the mounting member 400, forming a groove. Placing the mounting member 400 in the groove achieves the connection between the first clamp 100, the second clamp 200, and the mounting member 400.

[0079] Reference Figure 1 As shown, in some embodiments, the fixture further includes a connecting pin 410, and the mounting member 400 includes a first connecting portion 420 and a second connecting portion 430 disposed on the first connecting portion 420. The first connecting portion 420 is used to connect with a tensile testing machine, and the second connecting portion 430 is provided with a plurality of through holes 431, which are arranged at intervals along the extending direction of the second connecting portion 430.

[0080] The connecting pin 410 is inserted into a through hole 431, and the first clamp 100 and the second clamp 200 are hinged together by the connecting pin 410.

[0081] To enable this embodiment to adapt to tensile testing machines with different strokes, the mounting component 400 includes a first connecting portion 420 and a second connecting portion 430 disposed on the first connecting portion 420. The first connecting portion 420 is used to connect to the tensile testing machine by drilling a hole at the end of the first connecting portion 420 away from the end connected to the second connecting portion 430. Multiple through holes 431 are provided on the second connecting portion 430, and the multiple through holes 431 are sequentially spaced along the length direction of the second connecting portion 430. The first clamp 100 and the second clamp 200 are connected to the through holes 431 at different lengths to achieve adaptation to tensile testing machines with different strokes.

[0082] To achieve the hinge connection between the first clamp 100 and the second clamp 200, a connecting pin 410 is provided in the specific implementation. A pin hole is provided in the slot formed by the first clamp 100 and the second clamp 200. The connecting pin 410 passes sequentially through the pin hole on the first clamp 100, a through hole 431 on the second connecting part 430, and the pin hole on the second clamp 200, thereby achieving the hinge connection between the first clamp 100 and the second clamp 200 via the connecting pin 410.

[0083] Reference Figure 1 As shown, in some embodiments, the clamp further includes an adjusting member 500, which is inserted into the first clamp 100 and the second clamp 200. The adjusting member 500 rotates relative to the first clamp 100 and the second clamp 200 to bring the first clamp 100 and the second clamp 200 closer to each other or further away from each other.

[0084] In a specific implementation, this embodiment also includes an adjusting member 500, which can be a long bolt. A threaded hole can be opened in the middle of the first clamp 100, and the thread direction is opposite to that of the adjusting member 500. A threaded hole is also opened in the second clamp 200 at the position opposite to the first clamp 100. The adjusting member 500 is passed through the threaded hole on the first clamp 100 and the threaded hole on the second clamp 200 in sequence. The adjusting member 500 can rotate relative to the first clamp 100 and the second clamp 200, so that the first clamp 100 and the second clamp 200 move closer or further apart, thereby making the clamping member 300 on the first clamp 100 and the clamping member 300 on the second clamp 200 move closer or further apart.

[0085] Reference Figure 1As shown, in some embodiments, the clamp further includes an elastic element 510, which is sleeved on the adjusting element 500. The elastic element 510 is located between the first clamp 100 and the second clamp 200, and the two ends of the elastic element 510 extending in the direction of extension abut against the first clamp 100 and the second clamp 200, respectively.

[0086] In this embodiment, in order to prevent the clamped part from slipping, an elastic element 510 is sleeved on the adjusting member 500. The elastic element 510 can be a compression spring. The compression spring is disposed between the first clamp 100 and the second clamp 200. The two ends of the compression spring in the extension direction respectively abut against the first clamp 100 and the second clamp 200. It can be understood that the compression spring provides a stable preload to the first clamp 100 and the second clamp 200, thereby preventing the clamped part from slipping.

[0087] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A clamp for tensile testing of terminal blocks, characterized in that, include: First clamp (100); A second clamp (200) is connected to the first clamp (100), and at least one of the first clamp (100) and the second clamp (200) moves relative to the other to move closer to or further away from each other; Two clamping members (300) are provided, and the clamping members (300) can be detachably mounted on the first clamp (100) and the second clamp (200). The clamping members (300) are provided with receiving portions (310). The receiving portions (310) on the first clamp (100) and the second clamp (200) are arranged opposite to each other and together form a receiving cavity (311) that matches the object to be clamped. The two clamping members (300) are configured to move closer to each other to clamp the object to be clamped, or move further apart to release the object to be clamped, driven by at least one of the first clamp (100) and the second clamp (200).

2. The clamp for tensile testing of terminal blocks according to claim 1, characterized in that, The receiving part (310) is a receiving groove, and the two ends of the receiving groove in the extending direction are connected to the two ends of the clamping member (300); And / or, at least two of the receiving portions (310) are provided on the clamping member (300), and the extension directions of the at least two receiving grooves are parallel to each other.

3. The clamp for tensile testing of terminal blocks according to claim 1, characterized in that, At least one of the first clamp (100) and the second clamp (200) is provided with a mounting portion (110), and the clamping member (300) is detachably connected to the mounting portion (110).

4. The clamp for tensile testing of terminal blocks according to claim 3, characterized in that, The mounting part (110) is a support arm, the clamping member (300) includes a support part (320) and a clamping part (330) disposed on the support part (320), and the receiving part (310) is disposed on the clamping part (330); The support portion (320) is disposed on the support arm, and the side of the clamping member (300) facing away from the receiving portion (310) abuts against the end of the support arm.

5. The clamp for tensile testing of terminal blocks according to claim 4, characterized in that, One of the first clamp (100) and the second clamp (200) has a limiting groove (120) on one side opposite to the other, and a portion of the support (320) is inserted into the limiting groove (120) and abuts against the bottom of the limiting groove (120).

6. The clamp for tensile testing of terminal blocks according to claim 5, characterized in that, It also includes a connector (340), the mounting part (110) has a first mounting hole (111), the clamping part (300) has a second mounting hole (321), and when the support part (320) abuts against the bottom of the limiting groove (120), the axes of the first mounting hole (111) and the second mounting hole (321) are on the same straight line; The connector (340) is connected to the first mounting hole (111) via the second mounting hole (321), and the clamping member (300) and the mounting part (110) are detachably connected.

7. The clamp for tensile testing of terminal blocks according to claim 1, characterized in that, It also includes a mounting component (400), to which both the first clamp (100) and the second clamp (200) are hinged.

8. The clamp for tensile testing of terminal blocks according to claim 7, characterized in that, It also includes a connecting pin (410). The mounting component (400) includes a first connecting part (420) and a second connecting part (430) disposed on the first connecting part (420). The first connecting part (420) is used to connect with a tensile testing machine. The second connecting part (430) is provided with a plurality of through holes (431). The plurality of through holes (431) are arranged at intervals along the extension direction of the second connecting part (430). The connecting pin (410) is inserted into a through hole (431), and the first clamp (100) and the second clamp (200) are hinged through the connecting pin (410).

9. The clamp for tensile testing of terminal blocks according to any one of claims 1-8, characterized in that, It also includes an adjusting member (500) inserted into the first clamp (100) and the second clamp (200), the adjusting member (500) rotating relative to the first clamp (100) and the second clamp (200) to bring the first clamp (100) and the second clamp (200) closer to each other or further away from each other.

10. The clamp for tensile testing of terminal blocks according to claim 9, characterized in that, It also includes an elastic element (510), which is sleeved on the adjusting element (500). The elastic element (510) is located between the first clamp (100) and the second clamp (200), and the two ends of the extension direction of the elastic element (510) respectively abut against the first clamp (100) and the second clamp (200).

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