Welding stud tensile test device

Abstract

The utility model relates to the field of welding stud tensile tests, in particular to a welding stud tensile test device which comprises an upper chuck and a clamp, the upper chuck is provided with an upper clamping groove, and the clamp is arranged in the upper clamping groove in a penetrating mode and movably connected with the upper chuck. The clamp comprises a clamp body, a clamp groove is formed in the clamp body, the clamp groove is composed of a plurality of small clamp grooves, and the widths of the small clamp grooves are different. The device is high in detection efficiency and precision, and is wide in application range.

Description

Technical Field

[0001] The utility model relates to the field of welding nail tensile test, in particular to a welding nail tensile test device. Background Art

[0002] According to the National Standard of the People's Republic of China GB / T 10433-2002 "Cylindrical Head Welding Studs for Arc Stud Welding", the welding performance of the welding studs needs to be tested, including the tensile test of the welding end. The existing test device is used to test the welding studs, and the upper and lower clamps are respectively connected to the two ends of the welding studs, and then the tensile force in opposite directions is applied to pull the welding studs, and the welding performance is tested by the tensile load test. Among them, one end of the cylindrical head of the welding stud is clamped on the upper clamp of the test device, and the other end is clamped on the lower clamp. The upper clamp is in contact with the cylindrical head, and the force area is small. The upper clamp is easily deformed due to stress concentration, resulting in abnormal detection data and reducing detection efficiency and accuracy. In addition, if the cylindrical heads of welding studs of different models and sizes are tested, the upper clamp needs to be replaced, which has low detection efficiency and high cost. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a welding nail tensile test device with high detection efficiency and accuracy and wide application range.

[0004] In order to solve the above technical problems, the utility model provides a welding nail tensile test device, comprising an upper clamp and a clamp, wherein the upper clamp is provided with an upper clamp groove, the clamp is inserted into the upper clamp groove and movably connected with the upper clamp;

[0005] The clamp comprises a clamp body, the clamp body is provided with a clamp groove, the clamp groove is composed of a plurality of clamp small grooves, and each of the clamp small grooves has a different width.

[0006] As an improvement of the above solution, a plurality of the clamp small grooves are arranged in sequence along the opening of the clamp groove toward the bottom surface, and the width of the plurality of the clamp small grooves gradually decreases from the opening of the clamp groove toward the bottom surface.

[0007] As an improvement of the above solution, the upper clamping groove passes through the opposite side walls and the bottom surface of the upper clamping head;

[0008] The upper clamping groove, the clamp body and the clamping groove extend in the same direction;

[0009] The clamp groove passes through the upper and lower end surfaces of the clamp body.

[0010] As an improvement of the above solution, the side wall of the upper clamping groove is provided with a support platform, and the support platform, the side wall and the top surface of the upper clamping groove form a clamping cavity, and the clamp is inserted into the clamping cavity and mounted on the support platform.

[0011] As an improvement of the above solution, the upper clamp is provided with a positioning hole, the positioning hole is communicated with the clamping cavity; a positioning piece is provided in the positioning hole, the positioning piece and the upper clamp are movably connected so that the positioning piece extends into or out of the clamping cavity;

[0012] The side wall of the clamp body is provided with a plurality of positioning grooves which are arranged one-to-one with the small grooves of the clamp, and the positioning grooves and the positioning holes are arranged correspondingly so that the positioning pieces can be embedded in the positioning grooves.

[0013] As an improvement of the above solution, the side wall of the clamping cavity is provided with a side guide groove, and the side wall of the clamp body is provided with a side guide strip, and the side guide strip is embedded in the side guide groove.

[0014] As an improvement to the above solution, a bottom guide strip is provided on the support platform;

[0015] The clamp further comprises a guide platform arranged at the bottom of the clamp body, the bottom of the guide platform is provided with a bottom guide groove, and the bottom guide strip is embedded in the bottom guide groove.

[0016] As an improvement of the above solution, the height of the clamping cavity is greater than the height of the clamp.

[0017] As an improvement of the above solution, a plurality of limiting grooves are provided on the top wall of the clamp body, and the limiting grooves and the small grooves of the clamp are arranged in a one-to-one correspondence.

[0018] As an improvement of the above solution, it also includes a lower clamping head, the lower clamping head is provided with a lower clamping groove, and the side wall of the lower clamping groove is provided with a limit platform.

[0019] The implementation of this utility model has the following beneficial effects:

[0020] The utility model is provided with a clamp for the tensile test device for welding nails. The clamp and the upper clamp are used in combination to enhance the strength of the upper clamp, which is highly safe, and the detection data is more accurate, so that the detection efficiency and precision are high. Moreover, the clamp has a simple structure, a small volume, and a light weight. In addition, a clamp groove is provided on the clamp, and the clamp groove is composed of a plurality of small clamp grooves with different widths, which can adapt to welding nails of different models and sizes. When testing different models and sizes, there is no need to replace the upper clamp. It is only necessary to move and change the relative position between the clamp and the upper clamp so that the cylindrical heads of welding nails of different models and sizes are placed on the small clamp grooves of the corresponding widths. The operation is simple, the efficiency is high, and the cost is low, so that the application range of the device is wide. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the utility model welding nail tensile test device;

[0022] Figure 2 yes Figure 1 A schematic diagram of the structure of the upper chuck;

[0023] Figure 3 yes Figure 1 Front view of the fixture;

[0024] Figure 4 yes Figure 3 A top view of

[0025] Figure 5 yes Figure 3 Stereoscopic diagram. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail with reference to the accompanying drawings. It is hereby stated that the directional words such as up, down, left, right, front, back, inside, outside, etc. that appear or will appear in the text of the utility model are only based on the accompanying drawings of the utility model, and are not specific limitations of the utility model.

[0027] See also Figure 1-5 The utility model discloses a welding nail tensile test device, comprising an upper clamp 1 and a clamp 2. The upper clamp 1 is provided with an upper clamp groove 11. The clamp 2 is inserted into the upper clamp groove 11 and is movably connected with the upper clamp 1.

[0028] The clamp 2 comprises a clamp body 21 , on which a clamp groove 211 is provided. The clamp groove 211 is composed of a plurality of small clamp grooves 2111 , and each of the small clamp grooves 2111 has a different width.

[0029] The utility model is provided with a clamp for the tensile test device for welding nails. The clamp and the upper clamp are used in combination to enhance the strength of the upper clamp, which is highly safe, and the detection data is more accurate, so that the detection efficiency and precision are high. Moreover, the clamp has a simple structure, a small volume, and a light weight. In addition, a clamp groove is provided on the clamp, and the clamp groove is composed of a plurality of small clamp grooves with different widths, which can adapt to welding nails of different models and sizes. When testing different models and sizes, there is no need to replace the upper clamp. It is only necessary to move and change the relative position between the clamp and the upper clamp so that the cylindrical heads of welding nails of different models and sizes are placed on the small clamp grooves of the corresponding widths. The operation is simple, the efficiency is high, and the cost is low, so that the application range of the device is wide.

[0030] Specifically, Figure 4-5As shown, a plurality of the clamp small grooves 2111 are sequentially arranged along the opening 2112 of the clamp groove 211 toward the bottom surface, and the width of the plurality of the clamp small grooves 2111 gradually decreases from the opening 2112 of the clamp groove 211 toward the bottom surface. More specifically, the width of the plurality of the clamp small grooves 2111 is sequentially connected and arranged from large to small from the opening 2112 of the clamp groove 211 toward the bottom surface. The welding nail enters the clamp groove from the opening of the clamp groove, and the smaller welding nail can be moved into the clamp groove and inserted into the clamp small groove of the corresponding width, so that the welding nail can be mounted on the clamp. The setting of a plurality of clamp small grooves of different widths can meet the use of welding nails of different models and sizes.

[0031] The upper clamping groove 11 passes through the opposite side walls and the bottom surface of the upper clamp 1 ; the upper clamping groove 11 , the clamp body 21 and the clamp groove 211 extend in the same direction; the clamp groove 211 passes through the upper and lower end surfaces of the clamp body 21 .

[0032] like Figure 2 As shown, the side wall of the upper clamping groove 11 is provided with a support platform 12, and a clamping cavity 13 is surrounded by the support platform 12, the side wall and the top surface of the upper clamping groove 11, and the clamp 2 is inserted into the clamping cavity 13 and mounted on the support platform 12. Preferably, there are two support platforms 12, and they are symmetrically arranged on the two opposite side walls of the upper clamping groove 11. The two support platforms 12 are not connected, and there is a gap between the two support platforms 12. During testing, the welding nail rod is placed in the gap. Therefore, the clamp groove and the gap are connected and arranged correspondingly. The support platform supports the clamp, and the setting of the clamp enhances the strength of the upper clamp, so that the upper clamp is not easily deformed.

[0033] Preferably, if Figure 1-2 As shown, the upper clamp 1 is provided with a positioning hole (not shown in the figure), and the positioning hole is connected to the clamping cavity 13; a positioning member 3 is provided in the positioning hole, and the positioning member 3 is movably connected to the upper clamp 1 so that the positioning member 3 can extend into or withdraw from the clamping cavity 13. Figure 5 As shown, the side wall of the clamp body 21 is provided with a plurality of positioning grooves 212 corresponding to the small grooves 2111 of the clamp, and the positioning grooves 212 and the positioning holes are provided correspondingly so that the positioning member 3 can be embedded in the positioning grooves 212. More preferably, the axial direction of the positioning hole is perpendicular to the extension direction of the clamping cavity 13. The positioning hole is provided with an internal thread, the positioning member is provided with an external thread, and the positioning member is threadedly connected to the upper clamp.

[0034] Rotating the positioning piece can make the positioning piece extend into or out of the clamping cavity. Rotating the positioning piece makes the positioning piece extend into the clamping cavity, and the positioning piece will be embedded in the positioning groove corresponding to the positioning hole, so that the small groove of the fixture corresponding to the positioning groove is placed at the detection position of the upper clamp, so that the welding nail on the small groove of the fixture is placed at the detection position. Under the limiting effect of the positioning piece, it is ensured that the fixture does not shift during the detection process, thereby ensuring that the welding nail does not shift. Each small groove of the fixture is correspondingly provided with a corresponding positioning groove, and the positioning is accurate, ensuring the detection efficiency and accuracy.

[0035] Preferably, if Figure 2 , 4 As shown in Figure 5, the side wall of the clamping cavity 13 is provided with a side guide groove 131, and the side wall of the clamp body 21 is provided with a side guide strip 22, and the side guide strip 22 is embedded in the side guide groove 131. The cooperation of the side guide groove and the side guide strip ensures that the clamp does not deviate in the longitudinal direction and is accurately positioned, thereby ensuring detection efficiency and accuracy.

[0036] Preferably, if Figure 2-3 As shown in Figures 5 and 6, the support platform 12 is provided with a bottom guide bar 121; the fixture 2 further comprises a guide platform 23 provided at the bottom of the fixture body 21, the bottom of the guide platform 23 is provided with a bottom guide groove 231, and the bottom guide bar 121 is embedded in the bottom guide groove 231. The cooperation of the bottom guide bar and the bottom guide groove ensures that the fixture does not deviate in the lateral direction and is accurately positioned, thereby ensuring detection efficiency and accuracy.

[0037] More preferably, the side guide groove 131, the side guide strip 22, the bottom guide strip 121, the bottom guide groove 231 and the clamping cavity 13 extend in the same direction and are accurately positioned, further ensuring detection efficiency and accuracy.

[0038] It should be noted that the height of the clamping cavity 13 is greater than the height of the clamp 2, so that the cylindrical head of the welding nail can be placed in the clamping cavity and can be mounted on the clamp.

[0039] Preferably, if Figure 4 As shown, the top wall of the clamp body 21 is provided with a plurality of limit grooves 24, and the limit grooves 24 are arranged one by one with the clamp small grooves 2111. The limit grooves can limit the welding nails so that the welding nails can be embedded in the limit grooves and are not easily displaced, thereby ensuring the detection efficiency and accuracy.

[0040] Further, if Figure 1 As shown, the utility model further comprises a lower clamp 4, the lower clamp 4 is provided with a lower clamp groove 41, and the side wall of the lower clamp groove 41 is provided with a limit platform 42. The setting of the limit platform ensures the connection between the lower clamp and the welding nail.

[0041] In summary, the utility model provides a welding nail tensile test device with high detection efficiency and accuracy and a wide range of applications.

[0042] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the protection scope of the present invention.

Claims

1. A welding nail tensile test device, characterized in that: It comprises an upper clamp and a clamp, wherein the upper clamp is provided with an upper clamping groove, and the clamp is inserted into the upper clamping groove and movably connected with the upper clamp; The clamp comprises a clamp body, on which a clamp groove is arranged, and the clamp groove is composed of a plurality of small clamp grooves, each of which has a different width.

2. The welding stud tensile test device according to claim 1, characterized in that: The plurality of small clamp grooves are arranged in sequence along the opening of the clamp groove toward the bottom surface, and the width of the plurality of small clamp grooves gradually decreases from the opening of the clamp groove toward the bottom surface.

3. The welding nail tensile test device according to claim 1, characterized in that: The upper clamping groove passes through the opposite side walls and bottom surface of the upper clamping head; The upper clamping groove, the clamp body and the clamping groove extend in the same direction; The clamp groove passes through the upper and lower end surfaces of the clamp body.

4. The welding nail tensile test device according to claim 1, characterized in that: The side wall of the upper clamping groove is provided with a support platform, and a clamping cavity is surrounded by the support platform, the side wall and the top surface of the upper clamping groove. The clamp is inserted into the clamping cavity and mounted on the support platform.

5. The welding stud tensile test device according to claim 4, characterized in that: The upper clamp is provided with a positioning hole, and the positioning hole is communicated with the clamping cavity; a positioning piece is provided in the positioning hole, and the positioning piece is movably connected with the upper clamp so that the positioning piece can extend into or withdraw from the clamping cavity; The side wall of the clamp body is provided with a plurality of positioning grooves which are arranged one-to-one with the small grooves of the clamp, and the positioning grooves and the positioning holes are arranged correspondingly so that the positioning pieces can be embedded in the positioning grooves.

6. The welding nail tensile test device according to claim 4, characterized in that: The side wall of the clamping cavity is provided with a side guide groove, and the side wall of the clamp body is provided with a side guide strip, and the side guide strip is embedded in the side guide groove.

7. The welding nail tensile test device according to claim 6, characterized in that: The support platform is provided with a bottom guide strip; The clamp further comprises a guide platform arranged at the bottom of the clamp body, the bottom of the guide platform is provided with a bottom guide groove, and the bottom guide strip is embedded in the bottom guide groove.

8. The welding stud tensile test device according to claim 4, characterized in that: The height of the clamping cavity is greater than the height of the clamp.

9. The welding nail tensile test device according to claim 1, characterized in that: A plurality of limiting grooves are arranged on the top wall of the clamp body, and the limiting grooves and the small grooves of the clamp are arranged in one-to-one correspondence.

10. The welding stud tensile test device according to any one of claims 1 to 9, characterized in that: It also includes a lower clamping head, the lower clamping head is provided with a lower clamping groove, and the side wall of the lower clamping groove is provided with a limiting platform.

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