Cable terminal tension testing device

Abstract

The utility model discloses a cable terminal tension testing device, which relates to the technical field of terminal tension testing and comprises a bottom plate, a fixing unit and a clamping unit are arranged on the bottom plate, the clamping unit comprises rotating seats which are arranged in parallel, a displacement lead screw is rotatably arranged between the rotating seats, a driving seat is arranged on the displacement lead screw in a matched manner, a clamping seat is arranged on the driving seat, and the clamping seat is arranged on the clamping seat. Two supporting plates are arranged at the two ends of the clamping base, a first clamping plate and a second clamping plate are arranged on the opposite sides of the two supporting plates respectively, a plurality of first pressing fingers are arranged on the first clamping plate, and a plurality of second pressing fingers are arranged on the second clamping plate; the first clamping plate and the second clamping plate can enable the cable to be in a wave state under the action of the first pressing finger and the second pressing finger; the other side of the first clamping plate is provided with a hydraulic station used for enabling the first clamping plate to move oppositely relative to the second clamping plate. Clamping force is provided for the first clamping plate and the second clamping plate through the hydraulic station, a cable can be fixed more firmly, slipping is prevented, and normal testing is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of terminal tension testing, in particular to a cable terminal tension testing device. Background Art

[0002] Terminals are the parts that connect batteries to external conductors. In electrical engineering, terminals mostly refer to wiring terminals, also called wiring terminals. They are divided into single-hole, double-hole, socket, hook, etc., and materials include silver-plated copper, zinc-plated copper, copper, aluminum, iron, etc. They are mainly used to transmit electrical signals or conduct electricity.

[0003] When the terminal is crimped with the wire harness, in order to prevent it from falling off during subsequent use, it is necessary to test the tensile strength of the joint between the two according to the value specified in the standard;

[0004] The invention patent with the existing application number 202011407482.4 discloses an automatic wire harness terminal tension testing machine, including a frame, a terminal chuck, a wire harness clamping mechanism, and a tension testing mechanism. The terminal chuck is arranged on one side of the top of the frame, and a plurality of slots are provided on the terminal chuck. The wire harness clamping mechanism includes a pressure plate and a pressure roller arranged on the other side of the top of the frame. The frame is provided with a transverse movement mechanism for driving the pressure plate to move. The pressure roller is arranged on the upper side of the pressure plate near the front end of the terminal chuck. A support block for supporting the pressure roller is provided on the front side of the pressure plate. The pressure roller and the pressure plate are not in contact. An eccentric shaft is provided on the side of the pressure roller near the terminal chuck, and both ends of the eccentric shaft are movably connected to the support block. A toggle handle for rotating the pressure shaft is provided on the pressure roller. An arched boss is provided on the rear side of the pressure plate. A torsion spring is provided on the eccentric shaft, one end of the torsion spring is connected to the support block, and the other end of the torsion spring is connected to the pressure roller.

[0005] This patent can quickly compress and limit the wire harness through the cooperation of the pressure roller and the pressure plate, which is suitable for wire harnesses of different wire diameters. The wire harness compression and fixing operation is simple and fast, the cable fixing effect is good and will not get loose, and the accuracy and efficiency of the wire harness tension test are improved. The test machine has a simple structure, is easy to manufacture, and has the advantages of easy operation and low cost.

[0006] However, this patent also has a shortcoming. When the square number of the cable is below 30, the technical solution in the above patent can be used to clamp it firmly. However, when the square number of the cable is greater than 30, the wire harness and the outer skin will separate when one end of the cable is fixed with a pressure roller, which will cause the cable to slip from the pressure roller when the tension increases to a certain value, ultimately leading to the failure and interruption of the detection experiment. Therefore, the above patent has the problem of loose clamping when performing tension tests on cables with a square number greater than 30.

[0007] Therefore, there is an urgent need for a cable terminal tension test device, which is used to improve the clamping force of the cable when performing a tension test on the terminal, prevent it from slipping, and ensure the normal progress of the test. Summary of the Invention

[0008] In view of the above technical problems, the present utility model provides a cable terminal tensile test device, which is used to solve the problem that when the existing terminal tensile testing machine clamps and fixes a cable with a cross-section larger than 30 square millimeters, the clamping is not firm, resulting in the separation and slippage of the outer skin and the wire harness.

[0009] The above technical object of the present utility model is achieved through the following technical solutions:

[0010] A cable terminal tensile test device includes a bottom plate and a mask arranged on the bottom plate. The bottom plate is linearly provided with a fixing unit and a clamping unit. The fixing unit is used to fix the terminal, and the clamping unit is used to clamp the cable connected with the terminal and make an opposite movement relative to the fixing unit. The clamping unit includes two rotatable seats arranged in parallel. A displacement screw is rotatably arranged between the two rotatable seats. A driving seat is cooperatively arranged on the displacement screw. A clamping seat is arranged on the driving seat. Two support plates are arranged in parallel and movably at both ends of the clamping seat. A first clamping plate and a second clamping plate are respectively arranged on the opposite sides of the two support plates. A plurality of first pressing fingers are arranged on the first clamping plate, and a plurality of second pressing fingers are arranged on the second clamping plate. The first pressing fingers and the second pressing fingers are arranged in a staggered manner;

[0011] The first clamping plate and the second clamping plate can make the cable present a wavy state under the action of the first pressing fingers and the second pressing fingers;

[0012] On the other side of the first clamping plate, there is a hydraulic station for making the first clamping plate move towards the second clamping plate. The hydraulic station includes a hydraulic pump, a hydraulic cylinder and an oil tank. The hydraulic cylinder is connected to the support plate of the first clamping plate.

[0013] Further, the cross-sections of the first pressing fingers and the second pressing fingers are both semi-circular.

[0014] Further, an adjusting screw is arranged on one side of the clamping seat where the second clamping plate is located. One end of the adjusting screw is rotatably connected to the support plate of the second clamping plate.

[0015] Further, the clamping seat includes a base, the base is bolted to the driving seat, and connecting arms are arranged in parallel at both ends of the base. The first clamping plate and the second clamping plate are located between the two connecting arms.

[0016] Further, clamping legs are respectively arranged at both ends of the two support plates, and the clamping legs are attached to both sides of the base.

[0017] Further, a driving wheel is arranged at one end of the displacement screw where the rotatable seat is located. A driving belt is equipped on the driving wheel, and a driving motor is equipped at one end of the driving belt.

[0018] Further, the fixing unit includes two fixing arms arranged in parallel, a fixing frame is provided between the two fixing arms, a fixing disk is rotatably provided on the fixing frame, and a plurality of fixing columns and fixing clamping mouths are provided on the fixing disk.

[0019] Further, the diameters of the plurality of fixing columns are not equal.

[0020] In summary, the beneficial technical effects of the present utility model are as follows:

[0021] (1) The hydraulic station is used to drive the support plate installed with the first clamping plate to move towards each other relative to the second clamping plate, thereby clamping the cable located between the first clamping plate and the second clamping plate. During the clamping process, the first pressing fingers and the second pressing fingers arranged in a staggered manner on the first clamping plate and the second clamping plate can make the cable present a wavy shape. Through this action mode, the frictional resistance between the outer skin of the cable and the internal wire harness is increased, the relative displacement between the two under the action of tension is reduced, and further the separation of the outer skin and the wire harness and the slippage between the first clamping plate and the second clamping plate are avoided. The cable can be firmly fixed during the test, ensuring the normal progress of the test. At the same time, the displacement lead screw is used to drive the driving seat to move along the guide rod to provide tension for the terminal and the cable to achieve the purpose of the test.

[0022] (2) The driving motor is used to drive the displacement lead screw to realize the relative movement of the fixing unit and the clamping unit, which not only provides the tension for the whole test, but also replaces the manual output by mechanical means, reducing the labor intensity of the staff.

[0023] (3) The adjusting lead screw is used to control the front and back movement of the support plate connected with the second clamping plate, ensuring the concentricity between the terminal on the fixing unit and the cable on the clamping unit, and avoiding the problem of oblique pulling.

[0024] (4) With a plurality of fixing columns with different diameters, terminals of different specifications can be hung, thereby increasing the applicable range of the whole test device. Description of the Drawings

[0025] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0026] Figure 2 is a schematic diagram with the mask hidden;

[0027] Figure 3 is Figure 2 a schematic diagram with the clamping seat hidden;

[0028] Figure 4 is a schematic diagram of the structure of the clamping unit;

[0029] Figure 5 is Figure 4 a schematic diagram from another angle;

[0030] Figure 6 Yes Figure 2 Schematic enlarged view of part A of

[0031] Reference numerals: 1, base plate; 2, face mask; 3, control panel; 4, fixing unit; 5, clamping unit; 6, rotating seat; 7, displacement lead screw; 8, driving seat; 9, clamping seat; 10, base; 11, connecting arm; 12, support plate; 13, first clamping plate; 14, second clamping plate; 15, first pressing finger; 16, second pressing finger; 17, hydraulic cylinder; 18, hydraulic pump; 19, fuel tank; 20, leg clamp; 21, driving wheel; 22, driving belt; 23, driving motor; 24, fixing arm; 25, fixing bracket; 26, fixing disk; 27, fixing column; 28, fixing clamping opening; 29, adjusting lead screw; 30, pressure relief valve; 31, terminal; 32, cable. Detailed implementation manners

[0032] The present utility model will be clearly and completely described below in conjunction with the embodiments.

[0033] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0034] In the description of the embodiments, unless otherwise clearly defined and limited, terms such as "set" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or connected through an intermediate medium, and it can also be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0035] See the appendix Figures 1-6, shown is a cable terminal tension test device, including a base plate 1, a mask 2 is installed on the base plate 1 by bolts, a control panel 3 is provided on the mask 2, buttons and a display screen for controlling the entire device to perform various actions are provided on the control panel 3, a fixing unit 4 and a clamping unit 5 are arranged in a straight line on the base plate 1, wherein the clamping unit 5 includes two rotating seats 6 fixed in parallel on the base plate 1, a displacement screw 7 is rotatably provided between the two rotating seats 6, the displacement screw 7 is located at one end of one of the rotating seats 6 and a driving wheel 21 is provided, the driving wheel 21 is provided with a driving belt 22, the driving belt 22 is specifically a synchronous belt, and the base plate 1 is located at the other end of the driving belt 22 and a driving motor 23 is provided, and the driving motor 23 is used to utilize the displacement screw 7 to rotate between the two rotating seats 6. The driving belt 22 drives the displacement screw 7 to rotate to provide tension for the entire test. The displacement screw 7 is equipped with a driving seat 8. At the same time, in order to improve the guiding performance of the driving seat 8 under the action of the displacement screw 7, guide rods are passed through both ends of the driving seat 8. The two ends of the guide rods are respectively connected to the two rotating seats 6. A clamping seat 9 is installed on the driving seat 8 by bolts. The clamping seat 9 is U-shaped as a whole, including a base 10 connected to the driving seat 8. A connecting arm 11 is respectively provided at both ends of the base 10. The clamping seat 9 is located in the two connecting arms 11 and movably provided with two support plates 12. Clamping legs 20 are respectively provided at both ends of the support plate 12. One side of the clamping leg 20 is attached to the base 10. The clamping leg 20 improves the support plate 12 on the base 10. In order to improve the directionality and stability of left-right sliding, the first clamping plate 13 and the second clamping plate 14 are installed on the opposite sides of the two support plates 12 by bolts, and a plurality of first pressing fingers 15 are equidistantly arranged on the side of the first clamping plate 13 close to the second clamping plate 14, and a plurality of second pressing fingers 16 are equidistantly arranged on the side of the second clamping plate 14 close to the first clamping plate 13. The first pressing fingers 15 and the second pressing fingers 16 are staggered. At the same time, the support plate 12 connected with the first clamping plate 13 is connected to a hydraulic station through a corresponding connecting arm 11. The hydraulic station specifically includes an oil tank 19 filled with hydraulic oil and a hydraulic cylinder 17 and a hydraulic pump 18 connected to the oil tank 19. The delivery amount of the hydraulic oil is controlled by the hydraulic pump 18, thereby controlling the extension and retraction of the hydraulic cylinder 17. The hydraulic cylinder 17 One end of the cable 32 is connected to the support plate 12 of the first clamping plate 13. During the test, the cable 32 is placed between the first clamping plate 13 and the second clamping plate 14. Then, the first clamping plate 13 is moved closer to the second clamping plate 14 by the hydraulic cylinder 17. As the distance between the first clamping plate 13 and the second clamping plate 14 is continuously reduced, the cable 32 is clamped and fixed by the first pressing finger 15 and the second pressing finger 16. At this time, the cable 32 presents a sawtooth or wavy shape under the action of the first pressing finger 15 and the second pressing finger 16. This action mode increases the friction resistance between the outer skin of the cable 32 and the internal wiring harness, so that the outer skin and the wiring harness fit more tightly, and they do not separate or slip from each other when a pulling force is applied, thereby effectively clamping the entire cable 32.

[0036] Meanwhile, in order to ensure that the cable 32 and the terminal 31 maintain a concentric relationship under tension and avoid the problem of oblique pulling, an adjusting lead screw 29 is provided on the connecting arm 11 of the clamping seat 9 on one side of the second clamping plate 14. One end of the adjusting lead screw 29 is rotatably connected to the support plate 12 of the second clamping plate 14. In this way, when clamping the cable 32, the position of the second clamping plate 14 relative to the first clamping plate 13 can be controlled by the adjusting lead screw 29, so that the clamping space between the first clamping plate 13 and the second clamping plate 14 is in the same straight line as the fixed end of the terminal 31;

[0037] As a cable terminal tensile test device, the fixing unit 4 includes two fixing arms 24 arranged in parallel at one end of another rotating seat 6. A U-shaped fixing frame 25 is installed between the two fixing arms 24. A fixing disk 26 is rotatably arranged in the fixing frame 25. A plurality of fixing columns 27 with different diameters and fixing jaws 28 with different spacings are provided on the fixing disk 26. During the test, it is sleeved on the corresponding fixing column 27 according to the aperture size of the connection hole on the terminal 31. In this way, the fixing of the terminal 31 is achieved through the fixing column 27. The clamping and fixing of the cable 32 are completed by the hydraulic station in cooperation with the first clamping plate 13 and the second clamping plate 14. Then, the driving motor 23 drives the clamping seat 9 to move through the displacement lead screw 7 to generate tension, and finally the tensile test between the cable 32 and the terminal 31 is completed.

[0038] During testing, first, the control panel 3 is used to control the drive motor 23 to drive the displacement lead screw 7 to rotate. The displacement lead screw 7 further drives the drive seat 8 connected with the clamping seat 9 to approach the fixing unit 4, so as to reduce the distance between the fixing unit 4 and the clamping unit 5. Then, the position of the second clamping plate 14 is adjusted by the adjusting lead screw 29 to make the first clamping plate 13 and the second clamping plate 14 located at relatively central positions of the clamping seat 9. Then, according to the aperture size of the connection hole of the terminal 31, the fixed disk 26 is rotated to make the fixed column 27 located directly in front of the first clamping plate 13 and the second clamping plate 14. Then, the terminal 31 is sleeved on the corresponding fixed column 27, and one end of the cable 32 is placed between the first clamping plate 13 and the second clamping plate 14. Then, the hydraulic pump 18 is started to control the hydraulic cylinder 17 to eject and act on the support plate 12 of the first clamping plate 13. As the output power of the hydraulic cylinder 17 gradually increases, at this time, the cable 32 gradually becomes wavy under the action of the first pressing finger 15 and the second pressing finger 16. When the hydraulic pump 18 reaches the rated power, the output stops. At this time, the cable 32 is in a firmly clamped state. Then, the drive motor 23 is used to drive the displacement lead screw 7 to rotate in the reverse direction to increase the distance between the fixing unit 4 and the clamping unit 5. At this time, with the continuous output of the drive motor 23, the tension between the cable 32 and the terminal 31 is continuously increased until the terminal 31 or the cable 32 is damaged. At this time, the maximum tension value will be obtained on the control panel 3, so as to judge whether the tensile capacity of the terminal 31 and the cable 32 meets the standard. Then, the pressure of the hydraulic pump 18 on the hydraulic cylinder 17 is released through the pressure relief valve 30 on the hydraulic station, and the hydraulic cylinder 17 is reset to the initial state.

[0039] The above is only the preferred specific embodiment of the present invention, and does not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A cable terminal tension test device, comprising a base plate (1) and a cover (2) arranged on the base plate (1), wherein a fixing unit (4) and a clamping unit (5) are linearly arranged on the base plate (1), wherein the fixing unit (4) is used to fix a terminal (31), and the clamping unit (5) is used to clamp a cable (32) connected to the terminal (31) and move toward the fixing unit (4), characterized in that: The clamping unit (5) comprises two rotating seats (6) arranged in parallel, a displacement screw (7) is rotatably arranged between the two rotating seats (6), a driving seat (8) is matched with the displacement screw (7), a clamping seat (9) is arranged on the driving seat (8), two supporting plates (12) are arranged in parallel and movably at both ends of the clamping seat (9), a first clamping plate (13) and a second clamping plate (14) are respectively arranged on opposite sides of the two supporting plates (12), a plurality of first pressing fingers (15) are arranged on the first clamping plate (13), a plurality of second pressing fingers (16) are arranged on the second clamping plate (14), and the first pressing fingers (15) and the second pressing fingers (16) are arranged in a staggered manner; The first clamping plate (13) and the second clamping plate (14) can make the cable (32) present a wavy state under the action of the first pressing finger (15) and the second pressing finger (16); A hydraulic station is provided on the other side of the first clamping plate (13) for enabling the first clamping plate (13) to move relative to the second clamping plate (14). The hydraulic station comprises a hydraulic pump (18), a hydraulic cylinder (17) and an oil tank (19). The hydraulic cylinder (17) is connected to the support plate (12) of the first clamping plate (13).

2. A cable terminal tension test device according to claim 1, characterized in that: The cross-sections of the first pressing finger (15) and the second pressing finger (16) are both semicircular.

3. A cable terminal tension test device according to claim 1, characterized in that: The clamping seat (9) is provided with an adjusting screw (29) on one side of the second clamping plate (14), and one end of the adjusting screw (29) is rotatably connected to the supporting plate (12) of the second clamping plate (14).

4. A cable terminal tension test device according to claim 1, characterized in that: The clamping seat (9) comprises a base (10), the base (10) is bolted to the driving seat (8), connecting arms (11) are arranged in parallel at both ends of the base (10), and the first clamping plate (13) and the second clamping plate (14) are located between the two connecting arms (11).

5. A cable terminal tension test device according to claim 1, characterized in that: Clamping legs (20) are respectively provided at both ends of the two support plates (12), and the clamping legs (20) are attached to two sides of the base (10).

6. A cable terminal tension test device according to claim 1, characterized in that: The displacement screw (7) is provided with a driving wheel (21) at one end of the rotating seat (6), the driving wheel (21) is provided with a driving belt (22), and one end of the driving belt (22) is provided with a driving motor (23).

7. A cable terminal tension test device according to claim 1, characterized in that: The fixing unit (4) comprises two fixing arms (24) arranged in parallel, a fixing frame (25) is arranged between the two fixing arms (24), a fixing plate (26) is rotatably arranged on the fixing frame (25), and a plurality of fixing columns (27) and fixing clamps (28) are arranged on the fixing plate (26).

8. A cable terminal tension test device according to claim 7, characterized in that: The diameters of the plurality of fixing columns (27) are different.

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