Tensile detection clamp for carbon fiber spokes

Abstract

The utility model discloses a carbon fiber spoke stretching detection clamp, which belongs to the technical field of spoke stretching detection clamps, and comprises a clamp of a stretcher, the clamp comprises an upper clamp and a lower clamp, the upper clamp is connected with a spoke, the spoke is connected onto the lower clamp, the upper clamp is fixedly connected with a fixing block, and the fixing block is fixedly connected with a clamping block. A fixing hole is formed in the fixing block, one end of the spoke is inserted into the fixing hole, a first receding groove is formed in the fixing hole, two first elastic pieces are fixedly arranged in the first receding groove in a mirroring mode, a mounting hole is formed in the lower clamp, and the two first elastic pieces are arranged in the mounting hole in a mirroring mode. One end of the spoke is fixedly connected with the clamp body, the other end of the spoke is inserted into the mounting hole, a second receding groove is formed in the mounting hole, second elastic pieces are fixedly arranged in the second receding groove, and two second elastic pieces are arranged in the second receding groove in a mirroring mode.

Description

Technical Field

[0001] This utility model relates to the field of spoke tensile testing fixtures, specifically a carbon fiber spoke tensile testing fixture. Background Technology

[0002] Carbon fiber spokes are bicycle wheel components made of carbon fiber composite materials, offering advantages such as light weight, high tensile strength, and good rigidity. During production, carbon fiber spokes undergo tensile testing using a tensile testing machine. This test assesses the spokes' fatigue life and load-bearing capacity.

[0003] The tensile testing machine includes a machine body, a lifting structure, and clamps. The lifting structure is mounted on the machine body, and there are two clamps, one on the lifting structure and the other on the machine body. When performing a tensile test on the spokes, the two ends of the spokes are clamped with the clamps, and the lifting structure is activated to perform the tensile test on the spokes.

[0004] Regarding the aforementioned technical conditions, there is still a drawback: the clamps of current stretching machines use multiple components to clamp and lock the spokes, which makes disassembly cumbersome and inconvenient.

[0005] Based on this, the present invention designs a carbon fiber spoke tensile testing fixture to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to provide a carbon fiber spoke tensile testing fixture to solve the above-mentioned technical problems.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a carbon fiber spoke tensile testing fixture, comprising a fixture for a tensile machine, the fixture including an upper fixture and a lower fixture, the upper fixture being connected to a spoke, the spoke being connected to the lower fixture, the upper fixture being fixedly connected to a fixing block, the fixing block having a fixing hole, one end of the spoke being inserted into the fixing hole, the fixing hole having a first clearance groove, a first elastic piece being fixedly disposed in the first clearance groove, two of the first elastic pieces being mirror-image disposed in the first clearance groove, the lower fixture having an mounting hole, the other end of the spoke being inserted into the mounting hole, the mounting hole having a second clearance groove, a second elastic piece being fixedly disposed in the second clearance groove, two of the second elastic pieces being mirror-image disposed in the second clearance groove.

[0008] Preferably, the spoke includes a flat portion and a cylindrical portion, the cylindrical portion is fixedly connected to the flat portion, and there are two cylindrical portions, which are respectively connected to the two ends of the flat portion. The diameter of the flat portion is smaller than the width of the first clearance groove.

[0009] Preferably, the width of the first displacement slot is less than the diameter of the fixing hole, and the width of the second displacement slot is less than the diameter of the mounting hole.

[0010] Preferably, a fixing slot is arranged in the fixing hole, one end of the spoke is fixedly connected with a first port, the first port is located in the fixing slot, and the upper clamp is between the first port and the lower clamp.

[0011] Preferably, the diameter of the first port is greater than the diameter of the fixing hole.

[0012] Preferably, the other end of the spoke is fixedly connected with a second port, the second port abuts on a side of the lower clamp away from the upper clamp, the lower clamp is between the second port and the upper clamp, and the diameter of the second port is greater than the diameter of the mounting hole.

[0013] Preferably, a threaded hole is arranged in the clamp, and two threaded holes are arranged in the clamp in mirror image.

[0014] In summary, the application has the following beneficial technical effects: when the spoke is detached from the clamp, the upper clamp and the lower clamp are moved to the position of the flat part of the spoke, and then the spoke is pulled in the direction of the first displacement slot and the second displacement slot, respectively, so that the spoke is separated from the upper clamp and the lower clamp under the action of the external force. In this process, the first elastic sheet and the second elastic sheet are deformed under stress, which facilitates the flat part of the spoke to be separated from the first displacement slot and the second displacement slot. In this way, the spoke can be conveniently detached from the upper clamp and the lower clamp, thereby achieving the effect of conveniently detaching the spoke from the clamp. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0016] Figure 1 It is a structure schematic view of the clamp and the spoke of the present embodiment.

[0017] Figure 2 It is a front structure schematic view of the clamp and the spoke of the present embodiment.

[0018] Figure 3 It is an installation structure schematic view of the clamp and the spoke of the present embodiment.

[0019] Figure 4 It is a structure schematic view of the clamp of the present embodiment.

[0020] The components represented by the reference numerals in the drawings are listed as follows:

[0021] 1, first port; 2, first elastic sheet; 3, threaded hole; 4, first let- go slot; 5, second elastic sheet; 6, lower clamp; 7, second port; 8, second let- go slot; 9, mounting hole; 10, spoke; 11, upper clamp; 12, fixed block; 13, fixed slot; 14, cylindrical part; 15, flat part; 16, fixed hole. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application. Figures 1-4 The present application will be further described in detail.

[0024] A kind of carbon fiber spoke tensile detection clamp, including the clamp of tensile machine, clamp includes upper clamp 11 and lower clamp 6, upper clamp 11 is connected with spoke 10, spoke 10 is connected on lower clamp 6. Upper clamp 11 is fixedly connected with fixed block 12, fixed block 12 is opened with fixed hole 16, one end of spoke 10 is installed in fixed hole 16, fixed hole 16 is opened with first let- go slot 4, first let- go slot 4 plays the role of facilitating spoke 10 to be installed into upper clamp 11.

[0025] First let- go slot 4 is fixedly provided with first elastic sheet 2, first elastic sheet 2 is mirror image arranged with two in first let- go slot 4, elastic sheet has elasticity, and can be elastically deformed under stress, when spoke 10 is installed in fixed hole 16 through first let- go slot 4, spoke 10 is not easy to separate from fixed hole 16 in the absence of external force.

[0026] Lower clamp 6 is opened with mounting hole 9, the other end of spoke 10 is installed in mounting hole 9, mounting hole 9 is opened with second let- go slot 8, second let- go slot 8 plays the role of facilitating the other end of spoke 10 to be installed into lower clamp 6. Second let- go slot 8 is fixedly provided with second elastic sheet 5, second elastic sheet 5 is mirror image arranged with two in second let- go slot 8, second elastic sheet 5 is same with first elastic sheet 2, and both make spoke 10 not easy to separate from mounting hole 9 in the absence of external force.

[0027] The spoke 10 comprises a flat part 15 and a cylindrical part 14, the cylindrical part 14 is fixedly connected on the flat part 15, the cylindrical part 14 is provided with two, two cylindrical parts 14 are connected on two ends of the flat part 15 respectively, the width of the flat part 15 is less than the width of the first displacement slot 4 and the second displacement slot 8, which facilitates the installation of the spoke 10 on the upper clamp 11 and the lower clamp 6 respectively from the flat part 15.

[0028] The width of the first displacement slot 4 is less than the diameter of the fixed hole 16, the width of the second displacement slot 8 is less than the diameter of the mounting hole 9, when the spoke 10 is stretched, the distance between the upper clamp 11 and the lower clamp 6 is pulled away, at this time, the upper clamp 11 and the lower clamp 6 are located at two cylindrical parts 14 of the spoke 10 respectively, so that the spoke 10 is not easy to be separated from the upper clamp 11 and the lower clamp 6.

[0029] The fixed hole 16 is provided with a fixed slot 13 away from one side of the lower clamp 6, one end of the spoke 10 is fixedly connected with a first port 1, the first port 1 abuts in the fixed slot 13, the upper clamp 11 is between the first port 1 and the lower clamp 6, the diameter of the first port 1 is greater than the diameter of the fixed hole 16.

[0030] The other end of the spoke 10 is fixedly connected with a second port 7, the second port 7 abuts on the side of the lower clamp 6 away from the upper clamp 11, the lower clamp 6 is between the second port 7 and the upper clamp 11, the diameter of the second port 7 is greater than the diameter of the mounting hole 9, under the action of the first port 1 and the second port 7, the spoke 10 is not easy to be separated from the upper clamp 11 and the lower clamp 6 during stretching. Threaded holes 3 are provided on the clamp, the threaded holes 3 are provided with two on the clamp in mirror image, the threaded holes 3 enable the clamp to be detachably connected on the stretching machine.

[0031] When the clamp is used, the spoke 10 is installed in the fixed hole 16 of the upper clamp 11 and the mounting hole 9 of the lower clamp 6 through the flat part 15 of the spoke 10, in the process of installing the spoke 10, the flat part 15 of the spoke 10 passes through the first elastic sheet 2 in the first displacement slot 4 and the second elastic sheet 5 in the second displacement slot 8 under the action of external force, so as to be installed in the fixed hole 16 and the mounting hole 9 respectively, during stretching, the distance between the upper clamp 11 and the lower clamp 6 is pulled apart, when the spoke 10 is in the stretched state, the first port 1 of the spoke 10 abuts in the fixed slot 13, the second port 7 of the spoke 10 abuts on the side of the lower clamp 6 away from the upper clamp 11, at this time, under the action of the first elastic sheet 2, the second elastic sheet 5, the first port 1 and the second port 7, the spoke 10 is stably installed in the upper clamp 11 and the lower clamp 6, so that the spoke 10 is not easy to be separated from the clamp during stretching.

[0032] The implementation principle of the embodiment is that when the spoke 10 is detached from the clamp, the upper clamp 11 and the lower clamp 6 are moved to the position of the flat part 15 of the spoke 10, and then the spoke 10 is pulled in the direction of the first displacement slot 4 and the second displacement slot 8, respectively, and the spoke 10 is separated from the upper clamp 11 and the lower clamp 6 under the action of an external force, in the process, the first elastic sheet 2 and the second elastic sheet 5 are deformed under stress, facilitating the flat part 15 of the spoke 10 to be separated from the first displacement slot 4 and the second displacement slot 8, so that the spoke 10 can be conveniently detached from the upper clamp 11 and the lower clamp 6, and the effect of conveniently detaching the spoke 10 from the clamp is achieved.

[0033] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inner", "front", "central", "both ends" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0034] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connecting", "fixing", "screw connection" and the like should be understood broadly, for example, can be fixed connection, or can be detachable connection, or can be integrated; can be mechanical connection, or can be electrical connection; can be directly connected, or can be indirectly connected through an intermediate medium; can be the communication or interaction relationship between two elements, unless otherwise explicitly limited, the above-mentioned terms in the utility model can be understood according to the specific meaning in the specific situation by the ordinary skilled in the art.

[0035] Although the embodiments of the utility model have been shown and described, it can be understood by the ordinary skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A carbon fiber spoke tensile detection fixture comprising a fixture of a tensile machine, characterized by: The clamp comprises an upper clamp (11) and a lower clamp (6), the upper clamp (11) is connected with a spoke (10), the spoke (10) is connected on the lower clamp (6), the upper clamp (11) is fixedly connected with a fixed block (12), the fixed block (12) is provided with a fixed hole (16), one end of the spoke (10) is inserted into the fixed hole (16), the fixed hole (16) is provided with a first accommodating slot (4), the first accommodating slot (4) is fixedly provided with a first elastic sheet (2), the first elastic sheet (2) is mirror image arranged in the first accommodating slot (4), the lower clamp (6) is provided with a mounting hole (9), the other end of the spoke (10) is inserted into the mounting hole (9), the mounting hole (9) is provided with a second accommodating slot (8), the second accommodating slot (8) is fixedly provided with a second elastic sheet (5), the second elastic sheet (5) is mirror image arranged in the second accommodating slot (8).

2. The carbon fiber spoke tensile test fixture of claim 1, wherein: The spoke (10) comprises a flat part (15) and a cylindrical part (14), the cylindrical part (14) is fixedly connected on the flat part (15), the cylindrical part (14) is provided with two, two cylindrical parts (14) are respectively connected on both ends of the flat part (15), the diameter width of the flat part (15) is less than the width of the first accommodating slot (4).

3. The carbon fiber spoke tensile test fixture of claim 1, wherein: The width of the first accommodating slot (4) is less than the diameter of the fixed hole (16), and the width of the second accommodating slot (8) is less than the diameter of the mounting hole (9).

4. The carbon fiber spoke tensile test fixture of claim 1, wherein: The fixed hole (16) is provided with a fixed slot (13), one end of the spoke (10) is fixedly connected with a first port (1), the first port (1) is located in the fixed slot (13), and the upper clamp (11) is between the first port (1) and the lower clamp (6).

5. A carbon fiber spoke tensile test fixture according to claim 4, wherein: The diameter of the first port (1) is greater than the diameter of the fixed hole (16).

6. The carbon fiber spoke tensile test fixture of claim 1, wherein: The other end of the spoke (10) is fixedly connected with a second port (7), the second port (7) abuts on the side of the lower clamp (6) away from the upper clamp (11), the lower clamp (6) is between the second port (7) and the upper clamp (11), and the diameter of the second port (7) is greater than the diameter of the mounting hole (9).

7. The carbon fiber spoke tensile test fixture of claim 1, wherein: The clamp is provided with a threaded hole (3), and the threaded hole (3) is mirror image arranged on the clamp.

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