Clamp for measuring resistance of cable conductor

Abstract

The utility model relates to the field of cable conductor measurement, in particular to a cable conductor resistance measurement clamp which comprises a measurement clamp body, an outer frame is fixedly installed on the periphery of the measurement clamp body, sliding devices are fixedly installed on the two sides in the outer frame, electric clamping devices are arranged on the sliding devices in a sliding mode, and each electric clamping device comprises a lead screw. A lead screw is arranged on the outer frame, two current end copper assemblies are rotationally arranged at the two ends of the lead screw, a motor driving device is fixedly installed on the outer portion of the rear side of the outer frame and fixedly connected with the lead screw, and a clamping button and a loosening button are fixedly installed on the outer side of the front end of the outer frame. The cable conductor clamping device has the advantages that the structure is simple, the clamping force of the cable conductor is convenient to control, and the clamping effect is good.

Description

Technical Field

[0001] The utility model relates to the field of cable conductor measurement, in particular to a clamp for measuring the resistance of a cable conductor. Background Art

[0002] Wires and cables refer to a type of wire used to transmit electrical energy and information and to achieve electromagnetic energy conversion. Depending on the usage scenarios, the resistance of the manufactured wires and cables varies. In order to ensure the quality of the wires and cables after manufacturing, resistance testing is required before leaving the factory. However, the detection fixture of the existing detection device requires manual tightening of the fixture to fix the wires and cables, which is not only inefficient but also prone to damage to the wires and cables due to excessive tightening of the fixture. Therefore, a wire and cable detection fixture is needed to solve the problems of inconvenience in fixing the wires and cables and inability to control the clamping force of the fixture in existing wire and cable detection.

[0003] A Chinese patent with publication number CN213149019U discloses a conductor resistance measuring fixture for wires and cables, comprising a measuring platform, wherein two fixed fixtures are symmetrically fixedly connected to the top of the measuring platform, and two mobile fixtures are slidably connected to the top of the measuring platform through a driving mechanism, and the adjacent mobile fixtures and fixed fixtures are used to clamp the exposed end of the cable, and the driving mechanism comprises a first transmission assembly, a second transmission assembly and a rotating assembly. The device sets a driving mechanism so that the first synchronous wheel drives the second synchronous wheel to rotate synchronously through the first synchronous belt, and the third synchronous wheel drives the fourth synchronous wheel to rotate synchronously through the second synchronous belt, so that the first synchronous wheel and the fourth synchronous wheel respectively drive two reciprocating screws at the same time, driving the two mobile fixtures to move radially synchronously to the corresponding fixed fixtures to clamp the exposed part of the cable, and effectively improve the clamping efficiency of the fixture on the wire.

[0004] However, the above patent requires manual tightening of the clamping force of the two clamps. If the force is too high, the wire will be damaged, and if the force is too low, the wire will become loose, thereby affecting the test results. Utility Model Content

[0005] The purpose of the utility model is to provide a clamp for measuring the resistance of cable conductors. The device can automatically clamp the wires and cables, and ensure that the detection clamp provides a stable clamping force when clamping the wires and cables while preventing the wires and cables from loosening. It can also provide timely reminders when the clamping force is too high or too low. It has the advantages of simple structure, convenient operation, good clamping effect, and high degree of automation.

[0006] The utility model aims to provide a fixture for measuring the resistance of a cable conductor, comprising a measuring fixture body, an outer frame fixedly installed around the measuring fixture body, sliding devices fixedly installed on both sides of the outer frame, an electric clamping device slidably arranged on the sliding device, the electric clamping device comprising a screw rod, two current end copper components rotatably arranged at both ends of the screw rod, a motor drive device fixedly installed on the rear side of the outer frame, and the motor drive device is fixedly connected to the screw rod.

[0007] Furthermore, the current end copper component includes a nut mounting seat, a threaded mounting hole is opened at the bottom of the nut mounting seat, the nut mounting seat is rotatably set on both ends of the screw rod through the threaded mounting hole, a mounting groove is opened on one side of the top of the nut mounting seat, and a chuck is fixedly installed on the inner side of the clamping plate.

[0008] Furthermore, the sliding device includes a slide rail and a slider. The slide rails are fixedly installed on both sides of the outer frame. Mounting holes are opened at the four corners of one side of the slider. The slider is fixedly connected to the current end copper component through the mounting holes. A slide groove is opened on the other side of the slider. The slider is slidably set on the slide rail through the slide groove.

[0009] Furthermore, the motor drive device includes a drive motor and a control drive device, the control drive device is fixedly arranged on the outer side of the back of the outer frame and the control drive device passes through the outer frame and is fixedly connected to the screw rod, and the other side of the control drive device is fixedly connected to the output end of the drive motor.

[0010] Furthermore, the motor drive device includes a drive motor and a control drive device, the control drive device is fixedly arranged on the outer side of the back of the outer frame and the control drive device passes through the outer frame and is fixedly connected to the screw rod, and the other side of the control drive device is fixedly connected to the output end of the drive motor.

[0011] Furthermore, bearings are fixedly installed on the inner sides of the front and rear ends of the outer frame, both ends of the screw rod are fixedly connected to the inner rings of the bearings, and the thread directions of the two ends of the screw rod are opposite, and a clamping button and a release button are fixedly installed on the outer side of the front end of the outer frame.

[0012] Furthermore, a pressure sensor is fixedly installed between the installation groove and the clamping plate, and a pressure indicator light is fixedly installed on the top of the front end of the outer frame.

[0013] Furthermore, the control drive device is electrically connected to the drive motor, the clamping button, the release button, the pressure sensor and the pressure indicator light respectively.

[0014] The working principle and use principle of the utility model are as follows: screw rods are rotatably arranged at both ends of the inner side of the outer frame in the device, two electric clamping devices are arranged at the front end and the rear end of the screw rod, a motor driving device is arranged at the rear side of the outer frame, the electric clamping device comprises a nut mounting seat and a current end copper chuck assembly, the current end copper chuck assembly is provided with a chuck, the motor driving device drives the screw rod to rotate so as to drive the two nut mounting seats to move toward the center position, the movable nut mounting seats utilize the current end copper chuck assembly to move relative to each other so as to clamp the cable conductor, a pressure sensor is arranged in the current end copper chuck assembly, a release button and a clamping button are arranged at the front end of the outer frame respectively, and the outer frame A pressure indicator light is provided at the top of the front end of the frame. The motor drive device includes a drive motor and a control drive device. When clamping the cable conductor, the cable conductor is placed between the two current end copper clamp assemblies, and the clamping button is pressed to rotate the screw rod, thereby moving the nut mounting seat to achieve the clamping of the cable conductor by the two current end copper clamp assemblies. The clamping force during clamping is sensed by the pressure sensor and the clamping force is displayed by the pressure indicator light. When the clamping force on the cable conductor is the maximum, the pressure indicator light will give a prompt, and the clamping button can be released at this time. Conversely, after the cable conductor is detected, the release button can be pressed to remove the cable conductor from the electric clamping device.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows: the device achieves clamping of the cable conductor by arranging a pressure sensor in the electric clamping device and using a motor drive device to drive the electric clamping device. At the same time, the clamping force can be monitored in real time during the clamping process to avoid damage to the cable conductor caused by excessive clamping force and inaccurate measurement data caused by insufficient clamping force. The device has the advantages of simple structure, easy control of the clamping force of the cable conductor and good clamping effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0018] Figure 3 It is a schematic diagram of the overall structure of the embodiment of the utility model from the top;

[0019] Figure 4 This is a schematic diagram of the structure of a nut mounting seat according to an embodiment of the utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the sliding device of an embodiment of the utility model;

[0021] Figure 6 This is a schematic diagram of the slider structure of an embodiment of the utility model.

[0022] Explanation of the reference numerals: 1. Measuring fixture body; 2. Outer frame; 3. Clamping button; 4. Release button; 5. Electric clamping device; 51. Screw rod; 511. Bearing; 52. Current end copper chuck assembly; 521. Nut mounting seat; 522. Threaded pair mounting hole; 523. Mounting groove; 524. Pressure sensor; 525. Clamping plate; 526. Chuck; 6. Motor drive device; 61. Drive motor; 62. Control drive device; 7. Sliding device; 71. Slide rail; 72. Sliding block; 721. Mounting hole; 722. Slide groove; 8. Pressure indicator light. DETAILED DESCRIPTION

[0023] according to Figure 1 As shown: a fixture for measuring the resistance of a cable conductor, comprising a measuring fixture body 1, an outer frame 2 is fixedly installed around the measuring fixture body 1, sliding devices 7 are fixedly installed on both sides of the outer frame 2, an electric clamping device 5 is slidably arranged on the sliding device 7, the electric clamping device 5 comprises a screw rod 51, two current end copper clamping head assemblies 52 are rotatably arranged at both ends of the screw rod 51, a motor driving device 6 is fixedly installed on the rear side of the outer frame 2, the motor driving device 6 is fixedly connected to the screw rod 51, and a clamping button 3 and a release button 4 are respectively fixedly installed on the outer side of the front end of the outer frame 2.

[0024] In the specific implementation, a sliding device 7 is provided on the inner wall on both sides of the outer frame 2, and two electric clamping devices 5 are fixedly installed between the sliding devices 7, wherein both ends of the screw rod 51 are rotatably arranged between the front end and the rear end of the outer frame 2, and current end copper clamping assemblies 52 are rotatably arranged at both ends of the screw rod 51, and a motor driving device 6 is provided on the rear side of the outer frame 2. The motor driving device 6 controls the forward rotation or reverse rotation of the screw rod 51, and a pressure indicator light 8 is installed on the top of the front end of the outer frame 2. The front end surface of the outer frame 2 is respectively embedded with a clamping button 3 and a release button 4. The clamping button 3 and the release button 4 can respectively control the forward or reverse rotation of the output end of the motor driving device 6, thereby controlling the rotation direction of the screw rod 51.

[0025] according to Figures 2 to 4As shown: the current end copper chuck assembly 52 includes a nut mounting seat 521, and a threaded mounting hole 522 is opened at the bottom of the nut mounting seat 521. The nut mounting seat 521 is rotatably set at the two ends of the screw rod 51 through the threaded mounting hole 522. The inner sides of the front and rear ends of the outer frame 2 are fixedly installed with bearings 511. The two ends of the screw rod 51 are fixedly connected to the inner ring of the bearing 511, and the thread directions of the two ends of the screw rod 51 are opposite. The outer side of the front end of the outer frame 2 is respectively fixedly installed with a clamping button 3 and a release button 4; the top of the nut mounting seat 521 is fixedly installed with a A mounting groove 523 is opened on the side, a clamp 526 is fixedly installed on the inner side of the clamping plate 525, a pressure sensor 524 is fixedly installed between the mounting groove 523 and the clamping plate 525, and a pressure indicator light 8 is fixedly installed on the top of the front end of the outer frame 2; the motor drive device 6 includes a drive motor 61 and a control drive device 62, the control drive device 62 is fixedly arranged on the outer side of the back of the outer frame 2 and the control drive device 62 passes through the outer frame 2 and is fixedly connected to the screw rod 51, and the other side of the control drive device 62 is fixedly connected to the output end of the drive motor 61.

[0026] In specific implementation, the nut mounting seat 521 is rotatably set on the screw rod 51 through the threaded auxiliary mounting hole 522. Both ends of the screw rod 51 are fixedly connected to the inner ring of the bearing 511. The screw rod 51 is rotatably set between the front end and the inner side of the rear end of the outer frame 2 through the bearing 511. The threads at both ends of the screw rod 51 are in opposite directions. The oppositely set threads facilitate synchronous control of the two nut mounting seats 521 to move inward and outward in the outer frame 2 synchronously. A pressure sensor 524 is first installed in the mounting groove 523. The other end of the pressure sensor 524 is provided with a clamping plate 525 and a chuck 526. The clamping plate 525 can provide a uniform and stable supporting force for the chuck 526. A plurality of grooves are provided on the inner side of the chuck 526, and the friction with the cable conductor is increased by the grooves. The pressure sensor 524 can sense the pressure of the chuck 526 toward the rear side, thereby sending a signal to the pressure indicator light 8. A control drive device 62 and a drive motor 61 are fixedly installed on the rear side of the outer frame 2 in sequence, wherein the control drive device 62 is equipped with a reducer and a PLC controller. The reducer can adopt the SBT-74 series. The drive accuracy of the drive motor 61 can be increased by using the reducer. The PLC controller can electrically connect the clamping button 3, the release button 4 and the drive motor 61, thereby realizing the function of controlling the forward and reverse rotation of the drive motor 61.

[0027] according to Figures 5 and 6As shown: the sliding device 7 includes a slide rail 71 and a slider 72, the slide rails 71 are fixedly installed on both sides of the outer frame 2, and mounting holes 721 are opened at the four corners of one side of the slider 72. The slider 72 is fixedly connected to the current end copper clamp assembly 52 through the mounting holes 721, and a slide groove 722 is opened on the other side of the slider 72. The slider 72 is slidably set on the slide rail 71 through the slide groove 722; the control drive device 62 is electrically connected to the drive motor 61, the clamping button 3, the release button 4, the pressure sensor 524 and the pressure indicator light 8 respectively.

[0028] In a specific implementation, one side of the slide rail 71 is fixedly connected to the inner walls on both sides of the outer frame 2, and the other side of the slide rail 71 can be set to a T-shape. The slide groove 722 on one side of the slider 72 can also be set to a T-shape. The slider 72 is slidably set on the inner side of the slide rail 71 through the slide groove 722. Mounting holes 721 are opened at the four corners of the other side of the slider 72. Bolts are installed in the mounting holes 721 to fix the slider 72 and the nut mounting seat 521. U-shaped grooves are set on the top of the side walls on both sides of the outer frame 2. When in use, it is convenient to put the measured cable wire into the U-shaped groove to avoid bending of the cable wire when clamped.

Claims

1. A fixture for measuring the resistance of a cable conductor, comprising a measuring fixture body (1), wherein an outer frame (2) is fixedly mounted around the measuring fixture body (1), and wherein: Sliding devices (7) are fixedly installed on both sides of the outer frame (2), and an electric clamping device (5) is slidably installed on the sliding device (7). The electric clamping device (5) comprises a screw rod (51), and two current-end copper clamping head assemblies (52) are rotatably installed at both ends of the screw rod (51). A motor drive device (6) is fixedly installed on the rear side of the outer frame (2), and the motor drive device (6) is fixedly connected to the screw rod (51).

2. The cable conductor resistance measuring fixture according to claim 1, characterized in that: The current end copper chuck assembly (52) comprises a nut mounting seat (521), a threaded pair mounting hole (522) is provided at the bottom of the nut mounting seat (521), the nut mounting seat (521) is rotatably arranged at both ends of the screw rod (51) through the threaded pair mounting hole (522), a mounting groove (523) is provided at one side of the top of the nut mounting seat (521), and a chuck (526) is fixedly installed on the inner side of the clamping plate (525).

3. The cable conductor resistance measuring fixture according to claim 1 or 2, characterized in that: The sliding device (7) comprises a slide rail (71) and a slider (72). The slide rails (71) are fixedly mounted on both sides of the outer frame (2). Four corners of one side of the slider (72) are provided with mounting holes (721). The slider (72) is fixedly connected to the current end copper clamp assembly (52) through the mounting holes (721). The other side of the slider (72) is provided with a slide groove (722). The slider (72) is slidably mounted on the slide rail (71) through the slide groove (722).

4. The cable conductor resistance measuring fixture according to claim 1 or 2, characterized in that: The motor drive device (6) comprises a drive motor (61) and a control drive device (62); the control drive device (62) is fixedly arranged on the outer side of the back of the outer frame (2); the control drive device (62) passes through the outer frame (2) and is fixedly connected to the screw rod (51); the other side of the control drive device (62) is fixedly connected to the output end of the drive motor (61).

5. The cable conductor resistance measuring fixture according to claim 3, characterized in that: The motor drive device (6) comprises a drive motor (61) and a control drive device (62); the control drive device (62) is fixedly arranged on the outer side of the back of the outer frame (2); the control drive device (62) passes through the outer frame (2) and is fixedly connected to the screw rod (51); the other side of the control drive device (62) is fixedly connected to the output end of the drive motor (61).

6. The cable conductor resistance measuring fixture according to claim 1, 2 or 5, characterized in that: Bearings (511) are fixedly mounted on the inner sides of the front and rear ends of the outer frame (2); both ends of the screw rod (51) are fixedly connected to the inner ring of the bearing (511), and the threads of the two ends of the screw rod (51) are in opposite directions; and a clamping button (3) and a releasing button (4) are respectively fixedly mounted on the outer side of the front end of the outer frame (2).

7. The cable conductor resistance measuring fixture according to claim 2, characterized in that: A pressure sensor (524) is fixedly mounted between the mounting groove (523) and the clamping plate (525), and a pressure indicator light (8) is fixedly mounted on the top of the front end of the outer frame (2).

8. The cable conductor resistance measuring fixture according to claim 7, characterized in that: The control drive device (62) is electrically connected to the drive motor (61), the clamping button (3), the release button (4), the pressure sensor (524), and the pressure indicator light (8), respectively.

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