Terminal tensile strength detection test platform

Abstract

The invention discloses a terminal tensile strength detection test platform, and relates to the technical field of strength testing. The problem of test precision is solved. The device specifically comprises a base, a portal frame is fixed to the outer wall of the top of the base through bolts, a lifting driving part is arranged below the top of the portal frame, the bottom of the lifting driving part is in transmission connection with a set of clamping assemblies through a linkage transmission part, and the base is located below the set of clamping assemblies and provided with another set of clamping assemblies; and a terminal limiting assembly is arranged on one side of the base, which is positioned on the side of the group of clamping assemblies. According to the invention, the two groups of clamping assemblies are used for clamping the wire harness, each clamping assembly comprises a plurality of V-shaped clamping jaws, the insulating skin is punctured by using the pressure of the V-shaped clamping jaws on the insulating skin during clamping, the wire core is removed, and the wire core is clamped and fixed, so that the relative displacement of the insulating skin and the wire core during testing can be prevented, and the testing precision is improved.

Description

Technical Field

[0001] The invention relates to the technical field of strength testing, and in particular to a terminal tensile strength detection test platform. Background Art

[0002] In order to ensure the reliability and convenience of the connection between the wiring harness and the device, the wiring terminal is welded and fixed to one end of the wiring harness, and the terminal is used to connect to the device during installation. In order to make the connection have a certain tensile strength, the welding position of the wiring harness and the terminal needs to be tested for tensile strength.

[0003] After searching, the Chinese patent publication number CN110849731A discloses a cable tensile strength testing tool, including two clamping mechanisms arranged in a mirror image; the two clamping mechanisms are located on the same platform and slide horizontally, the sliding trajectories of the two clamping mechanisms are the same, and at least one of the clamping mechanisms is connected to a pressure measuring device on its outward side.

[0004] The above patent has the following shortcomings: it uses upper and lower pressure blocks to clamp and fix the cable, but the cable and the wire harness are composed of an insulating layer and a wire core. When fixed by direct contact, pulling will cause the insulating layer and the wire core to move relative to each other, thereby reducing the test accuracy.

[0005] To this end, the present invention proposes a terminal tensile strength detection test platform. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a terminal tensile strength testing platform.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A terminal tensile strength testing platform, comprising a base,

[0009] A gantry is fixed to the top outer wall of the base by bolts, a lifting drive unit is arranged below the top of the gantry, a group of clamping components is connected to the bottom of the lifting drive unit through a linkage transmission unit, another group of clamping components is arranged below the base located below the group of clamping components, and a terminal limit component is arranged on one side of the base located on the side of the group of clamping components;

[0010] The clamping assembly includes a clamping block and a plurality of “V”-shaped clamping jaws fixed to the side wall of the clamping block;

[0011] The terminal limiting assembly comprises a fixing seat fixed to the outer wall of the top of the base and a cylinder welded to the top of the fixing seat and used for limiting the terminal.

[0012] Preferably, the two groups of "V"-shaped clamping jaws are offset from each other.

[0013] Further: The clamping block located at the bottom is slidably connected to the side wall of the terminal limiting component through a "T"-shaped rod, and a first spring is buckled on the opposite side of the "T"-shaped rod and the clamping block.

[0014] On the basis of the foregoing solution: The linkage transmission part includes a lifting plate and a lifting frame. The lifting plate and the lifting frame are slidably connected through a second guiding rod. The clamping block located at the top is slidably connected to the inner wall of the lifting frame through a first guiding rod. A second spring is buckled on the opposite side of the clamping block and the lifting frame. A transition block is movably fitted on the top of the clamping block. A connecting rod is rotatably connected to the inner wall of the transition block, and the other end of the connecting rod is rotatably connected to the bottom outer wall of the lifting plate.

[0015] In a better solution of the foregoing solution: A pressure sensor is fixedly embedded in the side wall of the clamping block, and the sensing end of the pressure sensor is in contact and cooperation with the side wall of the transition block.

[0016] As a further solution of the present invention: The lifting driving part includes a second guiding rod and an oil pump. A piston is slidably fitted in the inner wall of the second guiding rod. The bottom of the piston is connected to the top outer wall of the lifting plate through a piston rod. The lifting plate is slidably fitted to the bottom of the gantry through a third guiding rod.

[0017] Meanwhile, a second connecting pipe is welded and communicated at the top of the second guiding rod. The oil inlet of the oil pump is connected to an oil tank through a pipeline, and the oil outlet end of the oil pump is fixedly connected and communicated with the end of the second connecting pipe.

[0018] As a preferred solution of the present invention: A pressure relief valve is fixedly installed on one side of the second connecting pipe.

[0019] Meanwhile, the terminal limiting component further includes a through groove opened on the side wall of the cylinder and a sliding plug slidably connected to the inner wall of the fixed seat. A top rod is welded to the top of the sliding plug. A lever is rotatably connected to the side wall of the top rod. A waist-shaped hole is opened in the inner wall of the lever. A limiting column is fixed on the inner wall of the through groove, and the limiting column is movably and limit-fitted to the inner wall of the waist-shaped hole.

[0020] As a better solution of the present invention: The bottom of the fixed seat is connected to a first connecting pipe through a pipeline, and the first connecting pipe is welded and communicated with the side wall of the second connecting pipe.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1. In the present invention, by using two sets of clamping components to clamp the wire harness, and the clamping components include a plurality of "V"-shaped clamping claws. The pressure of the "V"-shaped clamping claws on the insulating skin during clamping is used to pierce it and release the wire core, and the wire core is clamped and fixed, so as to prevent the relative displacement between the insulating skin and the wire core during testing, thereby increasing the testing accuracy.

[0023] 2. In the present invention, by providing a linkage transmission part which is set as a combination of a lifting plate and a lifting frame, and an acting force is indirectly applied between the lifting plate and the clamping block by means of a connecting rod, the lifting drive and the pulling drive for testing can be integrated, thereby reducing the layout of the power source.

[0024] 3. In the present invention, using the connecting rod as a power medium, which will generate interrelated lateral forces and longitudinal forces. Thus, when the pulling force is greater, the longitudinal component force received by the clamping block also increases, so that the clamping force can match the pulling force, preventing redundancy of the acting force, and increasing both reliability and clamping stability.

[0025] 4. In the present invention, by providing a lever, on the one hand, it can extend outward to limit the terminal, thereby preventing the terminal from detaching from the cylinder during pulling. On the other hand, it can also achieve pressing and limiting of the terminal end face by rotation, so as to prevent the terminal from bursting open when being pulled and broken, thus increasing the safety of the device.

[0026] 5. In the present invention, the lever is driven by a push rod, and the lever is limited by the cooperation of a limit post and a kidney-shaped hole, so that the rotation and expansion drive of the lever both come from the push rod, simplifying the layout of the power source. On the other hand, the push rod is driven by a sliding plug, and the sliding plug is driven by the oil pressure during testing, thus not only ensuring the synchronous linkage between processes, but also further simplifying the layout of the power source. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall structure of a terminal tensile strength detection test platform proposed by the present invention;

[0028] Figure 2 is a schematic diagram of the structure of a clamping assembly of a terminal tensile strength detection test platform proposed by the present invention;

[0029] Figure 3 is a schematic cross-sectional view of a terminal limiting assembly of a terminal tensile strength detection test platform proposed by the present invention;

[0030] Figure 4 is a schematic diagram of a partial structure of a terminal tensile strength detection test platform proposed by the present invention;

[0031] Figure 5 is a schematic cross-sectional view of a linkage transmission part of a terminal tensile strength detection test platform proposed by the present invention;

[0032] Figure 6 is a schematic cross-sectional view of a lifting drive part of a terminal tensile strength detection test platform proposed by the present invention;

[0033] Figure 7This is a schematic diagram of the pipeline structure of a terminal tensile strength detection test platform proposed by the present invention.

[0034] In the figure: 1. base; 2. gantry; 3. lifting drive unit; 4. linkage transmission unit; 5. clamping assembly; 6. terminal limit assembly; 7. clamping block; 8. "V" type clamping claw; 9. fixed seat; 10. waist hole; 11. lever; 12. limit column; 13. through groove; 14. cylinder; 15. push rod; 16. sliding plug; 17. "T" type rod; 18. spring one; 19. lifting plate; 20. connecting rod; 21. guide rod one; 22. lifting frame; 23. spring two; 24. pressure sensor; 25. transition block; 26. oil tank; 27. guide rod two; 28. piston; 29. ​​connecting pipe one; 30. connecting pipe two; 31. oil pump; 32. pressure relief valve; 33. guide rod three; 34. piston rod. DETAILED DESCRIPTION

[0035] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0036] Embodiments of the present invention are described in detail below, examples of which 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 only used to explain the present invention, and cannot be understood as limiting the present invention.

[0037] Embodiment 1:

[0038] A terminal tensile strength testing platform, such as Figure 1-7 As shown, it includes a base 1, the top outer wall of the base 1 is fixed with a gantry 2 by bolts, a lifting drive part 3 is arranged below the top of the gantry 2, the bottom of the lifting drive part 3 is connected to a group of clamping components 5 through a linkage transmission part 4, another group of clamping components 5 is arranged below the base 1 located below the group of clamping components 5, and a terminal limit component 6 is arranged on one side of the base 1 located on the side of the group of clamping components 5.

[0039] The clamping assembly 5 includes a clamping block 7 and a plurality of “V”-shaped clamping jaws 8 fixed to the side walls of the clamping block 7, and two groups of the “V”-shaped clamping jaws 8 are offset from each other.

[0040] The terminal limiting assembly 6 includes a fixing seat 9 fixed to the top outer wall of the base 1 and a cylinder 14 welded to the top of the fixing seat 9 and used for limiting the terminal.

[0041] When this device is in use, samples can be extracted by sampling or by inspecting the first item in the first batch. Subsequently, the mounting holes of the sample terminals are sleeved on the outer wall of the cylinder 14. Then, the wire harness is placed in the "V" - shaped groove of the "V" - shaped gripper 8 at the bottom. Subsequently, the lifting drive part 3 and the linkage transmission part 4 are used to control the clamping assembly 5 at the top to descend, so that the two clamping assemblies 5 clamp the wire harness from above and below. After the two "V" - shaped grippers 8 clamp the wire harness, the side wall of the "V" - shaped gripper 8 will pierce the insulation skin of the wire harness to contact and clamp the core part. Then, a transverse acting force is applied to the clamping assembly 5 at the top through the lifting drive part 3 and the linkage transmission part 4, and observing the magnitude of the transverse acting force when the wire harness and the terminal break can complete the test.

[0042] This device clamps the wire harness by using two clamping assemblies 5, and the clamping assembly 5 contains multiple "V" - shaped grippers 8. When clamping, the pressure of the "V" - shaped gripper 8 on the insulation skin pierces it, releases the core, and clamps and fixes the core, so as to prevent relative displacement between the insulation skin and the core during the test, thereby increasing the test accuracy.

[0043] To solve the reset problem; as Figure 4 shown, the clamping block 7 at the bottom is slidably connected to the side wall of the terminal limit assembly 6 through a "T" - shaped rod 17, and a first spring 18 is buckled on the opposite side of the "T" - shaped rod 17 and the clamping block 7.

[0044] To solve the driving problem; as Figure 5 shown, the linkage transmission part 4 includes a lifting plate 19 and a lifting frame 22. The lifting plate 19 and the lifting frame 22 are slidably connected through a second guide rod 27. The clamping block 7 at the top is slidably connected to the inner wall of the lifting frame 22 through a first guide rod 21. The same second spring 23 is buckled on the opposite side of the clamping block 7 and the lifting frame 22. A transition block 25 is movably fitted on the top of the clamping block 7, and a pressure sensor 24 is fixedly embedded on the side wall of the clamping block 7. The sensing end of the pressure sensor 24 is in contact with the side wall of the transition block 25. A connecting rod 20 is rotatably connected to the inner wall of the transition block 25, and the other end of the connecting rod 20 is rotatably connected to the bottom outer wall of the lifting plate 19.

[0045] When the lifting plate 19 descends, it can drive the lifting frame 22 to descend synchronously. Until the clamping block 7 descends until the "V" - shaped gripper 8 pierces the insulating sheet, when the lifting plate 19 continues to descend, a transverse acting force will be applied to the transition block 25 through the connecting rod 20. Thus, the acting force is transmitted to the clamping block 7 through the pressure sensor 24, causing the clamping block 7 to generate a transverse acting force to pull the wire harness. During this process, the pressure sensor 24 can sense the acting force of the transition block 25 on the clamping block 7, and combined with the elastic force of the second spring 23, the pulling force of the clamping block 7 on the wire harness can be obtained, thus realizing the test.

[0046] In this device, by setting up the linkage transmission part 4, the linkage transmission part 4 is set as a combination of a lifting plate 19 and a lifting frame 22, and an acting force is indirectly applied between the lifting plate 19 and the clamping block 7 by means of a connecting rod 20, so that the lifting drive and the pulling drive for testing can be integrated, reducing the layout of the power source.

[0047] Moreover, this device uses the connecting rod 20 as a power medium, which will generate interrelated lateral forces and longitudinal forces. Therefore, when the pulling force is greater, the longitudinal component force received by the clamping block 7 also increases, so that the clamping force can match the pulling force, preventing redundancy of the acting force, increasing reliability and also increasing clamping stability.

[0048] To solve the lifting problem; as Figure 6 shown, the lifting drive part 3 includes a second guide rod 27 and an oil pump 31. A piston 28 is slidably fitted inside the second guide rod 27. The bottom of the piston 28 is connected to the top outer wall of the lifting plate 19 through a piston rod 34, and the lifting plate 19 is slidably fitted to the bottom of the gantry 2 through a third guide rod 33.

[0049] The top of the second guide rod 27 is welded and communicated with a second connecting pipe 30. The oil inlet of the oil pump 31 is connected to an oil tank 26 through a pipeline. The oil outlet end of the oil pump 31 is fixedly connected and communicated with the end of the second connecting pipe 30, and a pressure relief valve 32 is fixedly installed on one side of the second connecting pipe 30.

[0050] When the oil pump 31 is started, it can pump the oil in the oil tank 26 into the second connecting pipe 30, and then input it into the second guide rod 27. Thus, the piston 28 moves under the oil pressure, driving the piston rod 34 to move. And in this process, if the pulling force is overloaded, the oil can be relieved through the pressure relief valve 32.

[0051] When this embodiment is in use, samples can be extracted by sampling or checking the first one in the first batch. Subsequently, the mounting holes of the sample terminals are sleeved on the outer wall of the cylinder 14, and then the wire harness is placed in the "V"-shaped groove of the "V"-shaped clamping jaw 8 at the bottom. Then, the oil pump 31 is started, which can pump the oil in the fuel tank 26 into the second connecting pipe 30, and then input it into the second guide rod 27. Thus, the piston 28 moves under the oil pressure, driving the piston rod 34 to move, so that the two clamping assemblies 5 clamp the wire harness from above and below. Until the clamping block 7 descends to the "V"-shaped clamping jaw 8 and pierces the insulating sheet, when the lifting plate 19 continues to descend, it will exert a lateral force on the transition block 25 through the connecting rod 20. Thus, the pressure sensor 24 transmits the force to the clamping block 7, causing the clamping block 7 to generate a transverse movement force, thereby pulling the wire harness. And during this process, the pressure sensor 24 can sense the force of the transition block 25 on the clamping block 7. Combining with the elastic force of the second spring 23, the pulling force of the clamping block 7 on the wire harness can be obtained, thus realizing the test. And during this process, if the pulling force is overloaded, the oil can be relieved through the pressure relief valve 32.

[0052] Embodiment 2:

[0053] A test platform for detecting the tensile strength of terminals, as Figure 3 shown. To solve the stability problem; the following improvements are made on the basis of Embodiment 1 in this embodiment: The terminal limiting component 6 further includes a through groove 13 opened on the side wall of the cylinder 14 and a sliding plug 16 slidably connected to the inner wall of the fixed seat 9. The top of the sliding plug 16 is welded with a top rod 15, and a lever 11 is rotatably connected to the side wall of the top rod 15. A waist-shaped hole 10 is opened on the inner wall of the lever 11, and a limiting column 12 is fixed on the inner wall of the through groove 13. The limiting column 12 is movably and limit-fitted to the inner wall of the waist-shaped hole 10.

[0054] The bottom of the fixed seat 9 is connected with a first connecting pipe 29 through a pipeline, and the first connecting pipe 29 is welded and communicated with the side wall of the second connecting pipe 30.

[0055] When this embodiment is in use, when a pulling test is carried out, the oil pressure in the second connecting pipe 30 is transmitted to the inner cavity of the fixed seat 9 through the first connecting pipe 29, so that the sliding plug 16 rises under the oil pressure, driving the top rod 15 to rise, so that the lever 11 rotates outward and expands. Until the lever 11 reaches the horizontal state, when the top rod 15 continues to rise, the lever 11 will continue to rotate until the outer end contacts and presses the end face of the terminal, and the end face of the terminal can be fixed.

[0056] In this device, by setting the lever 11, on the one hand, it can extend outward to limit the terminal, so as to prevent the terminal from detaching from the cylinder 14 during pulling. On the other hand, it can also realize the pressing and limiting of the terminal end face through rotation, so as to prevent the terminal from bursting open when it is pulled and broken, thus increasing the safety of the device.

[0057] In addition, in this device, the ejector rod 15 is provided to drive the lever 11, and the cooperation between the limit post 12 and the kidney-shaped hole 10 is used to limit the lever 11, so that the rotation and expansion drive of the lever 11 can all come from the ejector rod 15, simplifying the layout of the power source. On the other hand, the ejector rod 15 is driven by the sliding plug 16, and the sliding plug 16 is driven by the oil pressure during testing, thus not only ensuring the synchronous linkage between processes, but also further simplifying the layout of the power source.

[0058] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered within the protection scope of the present invention.

Claims

1. A test platform for detecting the tensile strength of terminals, including a base (1), characterized in that, A gantry (2) is fixed to the outer wall of the top of the base (1) by bolts. An elevating drive part (3) is arranged below the top of the gantry (2). The bottom of the elevating drive part (3) is drivingly connected to a set of clamping assemblies (5) through a linkage transmission part (4). Another set of clamping assemblies (5) is arranged below the base (1) at the position of this set of clamping assemblies (5), and a terminal limiting assembly (6) is arranged on one side of the base (1) at the side of this set of clamping assemblies (5). The clamping assembly (5) includes a clamping block (7) and a plurality of "V"-shaped clamping claws (8) fixed to the side wall of the clamping block (7). The terminal limiting assembly (6) includes a fixed seat (9) fixed to the outer wall of the top of the base (1) and a cylinder (14) welded to the top of the fixed seat (9) and used for limiting the terminal.

2. The test platform for detecting the tensile strength of terminals according to claim 1, characterized in that, The two sets of "V"-shaped clamping claws (8) are offset from each other.

3. The test platform for detecting the tensile strength of terminals according to claim 1, characterized in that, The clamping block (7) located at the bottom is slidably connected to the side wall of the terminal limiting assembly (6) through a "T"-shaped rod (17), and a first spring (18) is buckled on the opposite side of the "T"-shaped rod (17) and the clamping block (7).

4. The test platform for detecting the tensile strength of terminals according to claim 1, characterized in that, The linkage transmission part (4) includes a lifting plate (19) and a lifting frame (22). The lifting plate (19) and the lifting frame (22) are slidably connected through a second guide rod (27). The clamping block (7) located at the top is slidably connected to the inner wall of the lifting frame (22) through a first guide rod (21). The same second spring (23) is buckled on the opposite side of the clamping block (7) and the lifting frame (22). A transition block (25) is movably matched with the top of the clamping block (7). A connecting rod (20) is rotatably connected to the inner wall of the transition block (25), and the other end of the connecting rod (20) is rotatably connected to the outer wall of the bottom of the lifting plate (19).

5. The test platform for detecting the tensile strength of terminals according to claim 4, characterized in that, A pressure sensor (24) is fixedly embedded in the side wall of the clamping block (7), and the sensing end of the pressure sensor (24) is in contact and cooperation with the side wall of the transition block (25).

6. The test platform for detecting the tensile strength of terminals according to claim 4, characterized in that, The elevating drive part (3) includes a second guide rod (27) and an oil pump (31). A piston (28) is slidably fitted in the inner wall of the second guide rod (27). The bottom of the piston (28) is connected to the outer wall of the top of the lifting plate (19) through a piston rod (34). The lifting plate (19) is slidably fitted to the bottom of the gantry (2) through a third guide rod (33).

7. The test platform for detecting the tensile strength of terminals according to claim 6, characterized in that, A second connecting pipe (30) is welded and communicated at the top of the second guide rod (27). The oil inlet of the oil pump (31) is connected to an oil tank (26) through a pipeline, and the oil outlet end of the oil pump (31) is fixedly connected and communicated with the end of the second connecting pipe (30).

8. The test platform for detecting the tensile strength of terminals according to claim 7, characterized in that, A pressure relief valve (32) is fixedly installed on one side of the second connecting pipe (30).

9. The test platform for detecting the tensile strength of terminals according to claim 7, characterized in that, The terminal limiting assembly (6) further includes a through groove (13) opened on the side wall of the cylinder (14) and a sliding plug (16) slidably connected to the inner wall of the fixed seat (9). A push rod (15) is welded to the top of the sliding plug (16). A lever (11) is rotatably connected to the side wall of the push rod (15). A waist-shaped hole (10) is opened in the inner wall of the lever (11). A limiting post (12) is fixed to the inner wall of the through groove (13), and the limiting post (12) is movably and limit-fitted to the inner wall of the waist-shaped hole (10).

10. The test platform for detecting the tensile strength of terminals according to claim 9, characterized in that, The bottom of the fixed seat (9) is connected with a first communicating pipe (29) through a pipeline, and the first communicating pipe (29) is welded and communicated with the side wall of a second communicating pipe (30).

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