Tension testing tool

Abstract

The utility model relates to the technical field of tension testing, and particularly discloses a tension testing tool which comprises a pulling piece and a stopping piece. Wherein the pulling piece comprises a fixing part, a matching part and a mounting part which are connected in sequence; the stopping piece is annular and is arranged on the periphery of the mounting part in a sleeving mode, the outer diameter of the stopping piece is larger than that of the matching part, the wire fixing ring can be arranged on the matching part in a sleeving mode, the end of the wire fixing ring can abut against the stopping piece, and the stopping piece is provided with a wire groove for a pull wire to penetrate through. During use, the wire fixing ring can be sleeved on the matching part, the fixing part can be fixed by one input end of a tensile strength testing machine, and the stay wire is fixed by the other input end of the tensile strength testing machine after penetrating through the wire slot, so that the connection strength between the wire fixing ring and the stay wire can be tested, and the wire fixing ring is sleeved on the matching part. Deformation is avoided in the testing process, so that the integrity of a welding point or a bonding point is guaranteed, and the accuracy of a testing result is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of tensile testing, in particular to a tensile testing tool. Background Art

[0002] Medical adjustable elbows have very high requirements for the size and stability of the bending force during use. The pull wire with the wire fixing ring plays the role of transmitting the bending force. There are many unstable factors in the welding or bonding process between the wire fixing ring and the pull wire. For example, high welding energy and poor bonding strength of glue will affect the connection strength between the pull wire and the wire fixing ring, resulting in failure to meet the transmission of the bending force. Therefore, the connection strength of the pull wire and the wire fixing ring needs to be tested before leaving the factory. Figure 1 As shown, the existing testing process mainly involves installing a clamp 1 at one input end of a tensile strength testing machine (the two input ends of the tensile strength testing machine can move away from each other and can measure the tensile force required during the process of moving the two input ends away from each other), and clamping the tension wire 2000 at the other input end to complete the tensile test. However, when clamp 1 clamps the wire fixing ring 1000, it may cause deformation of the wire fixing ring 1000, thereby damaging the welding points or bonding points, and thus causing inaccurate test data.

[0003] Therefore, it is urgent to study a tensile test method to improve the accuracy of test data. Utility Model Content

[0004] The purpose of the utility model is to provide a tensile testing tool to solve the problem in the prior art that welding points or bonding points are damaged during testing, resulting in inaccurate test data.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] Tensile test kit, used to test the tensile strength of cables with cable fixing rings, including:

[0007] A pulling member, comprising a fixing portion, a matching portion, and a mounting portion connected in sequence;

[0008] The stopper is annular and is sleeved on the outer circumference of the mounting portion. The outer diameter of the stopper is larger than the outer diameter of the matching portion. The wire fixing ring can be sleeved on the matching portion, and the end of the wire fixing ring can abut against the stopper. The stopper is provided with a wire groove for the pull wire to pass through.

[0009] As an optional technical solution for a tensile testing tool, the pulling member is a rod-shaped structure and extends along a first direction, and the wire groove passes through the stop member along the first direction.

[0010] As an optional technical solution of a tensile testing fixture, the stopper is in a circular ring shape; and / or,

[0011] The pulling member is cylindrical.

[0012] As an optional technical solution of the tensile testing fixture, the wire duct passes through the stopper along an axial direction away from the mounting portion; and / or,

[0013] The pulling member and the stopping member are integrally formed.

[0014] As an optional technical solution for a tensile testing tool, the opening of the wire trough close to the fixing portion is funnel-shaped and expands in the direction close to the fixing portion.

[0015] As an optional technical solution for a tensile testing tool, the stopper is provided with at least two wire grooves, and the at least two wire grooves are spaced apart around the outer circumference of the stopper.

[0016] As an optional technical solution for a tensile testing tool, the stopper is provided with four wire grooves, and the four wire grooves are evenly spaced around the periphery of the stopper.

[0017] As an optional technical solution for a tensile testing fixture, the outer diameter of the fixing portion is smaller than or equal to the outer diameter of the matching portion; and the outer diameter of the matching portion is equal to the outer diameter of the mounting portion.

[0018] As an optional technical solution for a tensile testing tool, the tensile testing tool is provided with at least two stoppers, which are arranged in sequence on the periphery of the mounting portion along a first direction, and the outer diameter of each stopper increases in sequence in the direction away from the fixed portion, the outer peripheral wall of the stopper forms a sleeve portion, and the end face of the stopper close to the fixed portion forms a stop portion, the wire fixing ring can be sleeved on the mating portion or can be sleeved on one of the two adjacent sleeve portions close to the fixed portion, and can abut against the corresponding stop portion.

[0019] As an optional technical solution for a tensile testing tool, the wire grooves in each of the stoppers extend outward from the mounting portion through the stopper.

[0020] The beneficial effects of the utility model are:

[0021] The utility model provides a tensile testing tool, which includes a pulling member and a stop member, wherein the stop member is ring-shaped and is arranged on the outer periphery of the mounting portion of the pulling member, and the outer diameter of the stop member is larger than the outer diameter of the mounting portion. When in use, the wire fixing ring can be sleeved on the matching portion, and the fixing portion can be fixed by one input end of a tensile strength testing machine. After passing through the wire groove, the pulling wire is fixed by the other input end of the tensile strength testing machine, so that the connection strength between the wire fixing ring and the pulling wire can be tested. wherein, the wire fixing ring is sleeved on the matching portion, and the wire fixing ring that is not clamped will not be deformed during the test process, which is beneficial to ensure the integrity of the welding point or the bonding point, so as to ensure the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a clamping wire fixing ring of a clamping member in the prior art.

[0023] In the picture:

[0024] 1000, wire fixing ring; 2000, pull wire;

[0025] 1. Clamping parts;

[0026] Figure 2 This is a structural diagram of a tensile testing tool in an embodiment of the present utility model;

[0027] Figure 3 This is a schematic diagram of the top structure of the tensile testing tool in the embodiment of the utility model.

[0028] In the picture:

[0029] Z, first direction;

[0030] 100, pulling member; 110, fixing portion; 120, matching portion;

[0031] 200, stopper; 210, wire trough; 220, stop portion; 230, socket portion. DETAILED DESCRIPTION

[0032] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a specific position, be constructed and operated in a specific position, and therefore should not be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0034] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0035] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0036] like Figure 2 and Figure 3As shown, this embodiment provides a tensile testing tool for testing the tensile strength of a pull wire 2000 with a wire fixing ring 1000, wherein the ends of the pull wire 2000 and the wire fixing ring 1000 are connected by welding or bonding, thereby forming a welding point or bonding point between the pull wire 2000 and the wire fixing ring 1000. In order to avoid deformation of the welding point or bonding point during the test process, which may lead to inaccurate test results, the tensile testing tool includes a pulling member 100 and a stop member 200. Among them, the pulling member 100 includes a fixing part 110, a matching part 120 and an installation part which are connected in sequence; the stop member 200 is annular and is sleeved on the outer periphery of the installation part. The outer diameter of the stop member 200 is larger than the outer diameter of the matching part 120. The wire fixing ring 1000 can be sleeved on the matching part 120, and the end of the wire fixing ring 1000 can abut against the stop member 200. The stop member 200 is provided with a wire groove 210 for the pulling wire 2000 to pass through.

[0037] When in use, the wire fixing ring 1000 can be sleeved on the matching part 120, and the fixing part 110 can be fixed by one input end of the tensile strength testing machine (tensile testing equipment of the pull wire 2000). After passing through the wire groove 210, the pull wire 2000 is fixed by the other input end of the tensile strength testing machine, so that the connection strength between the wire fixing ring 1000 and the pull wire 2000 can be tested. Among them, the wire fixing ring 1000 is sleeved on the matching part 120, so that the wire fixing ring 1000 that is not clamped will not be deformed during the test process, which is beneficial to ensure the integrity of the welding point or bonding point, so as to ensure the accuracy of the test results.

[0038] To facilitate compatibility with a tensile strength testing machine, the pull member 100 is a rod-shaped structure extending along a first direction Z. The wire groove 210 extends through the stop member 200 along the first direction Z. During use, the two input terminals of the tensile strength testing machine are spaced apart along the first direction Z to facilitate securing the fixing portion 110 and the pull wire 2000 thereto. The width of the wire groove 210 is 0.1 mm to 0.4 mm to match the diameter of the pull wire 2000.

[0039] In some embodiments, the wire groove 210 extends through the stopper 200 along an axis away from the mounting portion. This arrangement facilitates the installation of the pull wire 2000. The wire fixing ring 1000 can be placed on the mating portion 120 first. When the end of the wire fixing ring 1000 does not abut the stopper 200, the pull wire 2000 can be placed in the wire groove 210. Finally, the end of the wire fixing ring 1000 can be abutted against the stopper 200. This greatly improves the installation efficiency of the wire fixing ring 1000 and the pull wire 2000.

[0040] Because the size of the welding or bonding points is slightly larger than the diameter of the pull wire 2000, to prevent the welding or bonding points from abutting against the stopper 200, thereby causing deformation and affecting the test results, in some embodiments, the opening of the wire groove 210 near the fixing portion 110 is funnel-shaped and expands toward the fixing portion 110. This configuration allows the funnel-shaped opening to form a clearance space for the welding or bonding points, so that during the tensile test, the welding or bonding points cannot abut against the stopper 200, preventing deformation of the welding or bonding points and thus ensuring the accuracy of the test.

[0041] In the prior art, a single wire fixing ring 1000 may be fixedly connected to multiple pull wires 2000. To test the tensile strength between all the pull wires 2000 and the wire fixing ring 1000, in some embodiments, the stopper 200 is provided with at least two wire grooves 210, which are spaced apart around the centerline of the stopper 200. During use, the wire fixing ring 1000 is sleeved onto the mating portion 120, and each pull wire 2000 is passed through its corresponding wire groove 210, thereby facilitating separate or simultaneous testing of the tensile strength between each pull wire 2000 and the wire fixing ring 1000.

[0042] Illustratively, the stopper 200 is provided with four wire grooves 210, which are evenly spaced around the centerline of the stopper 200. In other embodiments, there may be three, five, or even eight wire grooves 210, and the specific number and positional relationship may also be determined based on the number of pull wires 2000 and their relative positions to the wire fixing ring 1000.

[0043] The wire fixing ring 1000 is an annular structure. To adapt to it, in some embodiments, the stopper 200 is annular. The annular stopper 200 is easy to process, and the rounded outer periphery can prevent injury to operators who accidentally touch it. The pulling member 100 is cylindrical, and the length of the mating portion 120 along the first direction Z is greater than the length of the wire fixing ring 1000. The wire fixing ring 1000 can be matched with the pulling member 100 and can be radially fixed relative to the pulling member 100 at the mating portion 120. When the pull wire 2000 is pulled, the wire fixing ring 1000 and the stopper 200 abut and are axially fixed relative to the pulling member 100. In other embodiments, the inner contour of the wire fixing ring 1000 can be polygonal. Adaptively, the pulling member 100 is prismatic, and the number of edges is the same as the number of sides of the inner contour of the wire fixing ring 1000.

[0044] Because the wire fixing ring 1000 needs to be threaded from the fixing portion 110 to the mating portion 120, the outer diameter of the fixing portion 110 is smaller than or equal to that of the mating portion 120. To reduce manufacturing difficulty, in this embodiment, the outer diameter of the mating portion 120 is equal to the outer diameter of the mounting portion. To further reduce manufacturing difficulty, in some embodiments, the pulling member 100 and the stopper 200 are integrally formed.

[0045] In some embodiments, a wedge groove is provided at the mating portion 120, and the tensile testing tool further includes a wedge block. When the wire fixing ring 1000 is sleeved on the mating portion 120, a fastening channel is formed between the wire fixing ring 1000 and the mating portion 120 at the wedge groove, and then part of the wedge block is inserted into the fastening channel so that one side of the wedge block abuts against the inner wall of the wire fixing ring 1000, and the other side abuts against the bottom of the wedge groove, thereby locking the wire fixing ring 1000 to the mating portion 120.

[0046] To accommodate wire fixing rings 1000 of different sizes, in some embodiments, the tensile testing fixture is provided with at least two stoppers 200. The at least two stoppers 200 are sequentially arranged along the first direction Z on the periphery of the mounting portion. The outer diameters of the stoppers 200 increase sequentially as they move away from the fixing portion 110. The outer peripheral walls of the stoppers 200 form a sleeve portion 230, and the end surfaces of the stoppers 200 proximal to the fixing portion 110 form a stop portion 220. The wire fixing ring 1000 can be sleeved over the mating portion 120 or over one of the two adjacent sleeve portions 230 proximal to the fixing portion 110, and can abut against the corresponding stop portion 220. In other words, in the first embodiment of this embodiment, the wire fixing ring 1000 is sleeved over the mating portion 120 and abuts against the stop portion 220 on the stopper 200 closest to the fixing portion 110. In the second embodiment of this embodiment, two adjacent stoppers 200 have two sleeve portions 230 and two stop portions 220. The wire fixing ring 1000 sleeves over the sleeve portions 230 closer to the fixing portion 110 and abuts against the stop portion 220 farther from the fixing portion 110. In this embodiment, ten stoppers 200 are provided, corresponding to at least ten wire fixing rings 1000 having different inner diameters.

[0047] In this embodiment, each stopper 200 is provided with a wedge groove, and the tensile testing tool also includes a wedge block. When the wire fixing ring 1000 is sleeved on the sleeve portion 230, a fastening channel is formed between the wire fixing ring 1000 and the sleeve portion 230 at the wedge groove, and then part of the wedge block is inserted into the fastening channel so that one side of the wedge block abuts against the inner wall of the wire fixing ring 1000, and the other side abuts against the bottom of the wedge groove, thereby locking the wire fixing ring 1000 to the sleeve portion 230.

[0048] The wire groove 210 in each stopper 200 extends outward from the mounting portion through the corresponding stopper 200. That is, the bottom of the wire groove 210 in each stopper 200 is formed by the outer wall of the mounting portion. This arrangement ensures that regardless of the size of the wire retaining ring 1000 mating with the sleeve 230 on any stopper 200, the pull wire 2000 connected thereto can extend along the first direction Z without interference from the sidewalls of the wire groove 210 on other stoppers 200, thereby improving the smoothness and accuracy of the test.

[0049] To ensure full contact with the wire fixing ring 1000, along the first direction Z, the length of the stopper 200 is greater than or equal to the length of the wire fixing ring 1000, so that the contact area between the wire fixing ring 1000 and the stopper 200 is as large as possible, so that the connection between the two is more secure, avoiding tilting during the test process and improving the accuracy of the test results.

[0050] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A tensile testing tool for testing the tensile strength of a pull wire (2000) with a wire fixing ring (1000), characterized in that: include: A pulling member (100), comprising a fixing portion (110), a matching portion (120), and a mounting portion connected in sequence; A stopper (200) is annular and sleeved on the outer periphery of the mounting portion. The outer diameter of the stopper (200) is greater than the outer diameter of the matching portion (120). The wire fixing ring (1000) can be sleeved on the matching portion (120), and the end of the wire fixing ring (1000) can abut against the stopper (200). The stopper (200) is provided with a wire groove (210) for the pull wire (2000) to pass through.

2. The tensile testing tool according to claim 1, characterized in that: The pulling member (100) is a rod-shaped structure and extends along a first direction (Z), and the wire groove (210) passes through the stop member (200) along the first direction (Z).

3. The tensile testing tool according to claim 2, characterized in that: The stopper (200) is annular; and / or, The pulling member (100) is cylindrical.

4. The tensile testing tool according to claim 1, characterized in that: The wire groove (210) passes through the stopper (200) along an axial direction away from the mounting portion; and / or, The pulling member (100) and the stopping member (200) are integrally formed.

5. The tensile testing tool according to claim 1, characterized in that: The opening of the wire groove (210) close to the fixing portion (110) is funnel-shaped and expands in the direction close to the fixing portion (110).

6. The tensile testing tool according to claim 1, characterized in that: The stopper (200) is provided with at least two wire grooves (210), and the at least two wire grooves (210) are arranged at intervals around the outer circumference of the stopper (200).

7. The tensile testing tool according to claim 6, characterized in that: The stopper (200) is provided with four wire grooves (210), and the four wire grooves (210) are evenly spaced and distributed around the outer circumference of the stopper (200).

8. The tensile testing tool according to claim 1, characterized in that: The outer diameter of the fixing portion (110) is smaller than or equal to the outer diameter of the matching portion (120); and the outer diameter of the matching portion (120) is equal to the outer diameter of the mounting portion.

9. The tensile testing tool according to any one of claims 1 to 8, characterized in that: The tensile testing fixture is provided with at least two stoppers (200), and the at least two stoppers (200) are sequentially arranged on the periphery of the mounting portion along a first direction (Z), and the outer diameter of each stopper (200) increases sequentially in a direction away from the fixing portion (110), and the outer peripheral wall of the stopper (200) forms a sleeve portion (230), and the end face of the stopper (200) close to the fixing portion (110) forms a stop portion (220), and the wire fixing ring (1000) can be sleeved on the matching portion (120) or can be sleeved on one of the two adjacent sleeve portions (230) close to the fixing portion (110), and can abut against the corresponding stopper (220).

10. The tensile testing tool according to claim 9, characterized in that: The wire grooves (210) in each of the stoppers (200) extend outward from the mounting portion through the stopper (200).

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