Test wire clamp capable of automatically loosening wire for test delivery instrument

Abstract

The utility model relates to the field of power test auxiliary equipment, in particular to a test wire clamp capable of automatically loosening a wire for a test delivery instrument, which comprises a shell, a clamp, a pull rope, a motor and an insulating rod, the clamp comprises a clamp body I, a clamp body II, a connecting shaft and a spring, a cross bar is arranged on the clamp body II, the insulating rod consists of an insulating rod body and a hook, and buckles are arranged on two sides of the shell; the hook of the link rod is clamped with the shell buckle and the cross bar, the clamp can be hung on to-be-tested line metal, the first clamp body and the second clamp body can stably clamp the to-be-tested line metal, a worker does not need to hold the link rod all the time, and the test efficiency and safety are improved; the pull rope is tightened through the motor, the pull rope drives the first plier body to rotate to achieve loosening and clamping, and the first plier body and the second plier body cannot scratch the metal surface of a circuit. According to the utility model, the problem that a line is easily scratched by the wire clamp because the test wire clamp of the traditional test delivery instrument needs to be manually supported by an insulating rod and forcibly taken is effectively solved, and the practicability and the test efficiency of the test wire clamp are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of power test auxiliary equipment, especially relates to a test line clamp for test instrument with automatic line loosening. BACKGROUND

[0002] For new 10kV and below distribution network overhead line and in 10kV and below distribution network overhead line operation and maintenance work, test instrument is often used to check line fault point and pre-delivery detection, during test, generally one staff uses insulating operating pole to hang test instrument high voltage output line on the metal part of the line to be tested, and then another staff operates the test instrument.

[0003] During the whole test process, the staff responsible for hanging the high voltage output line needs to wear insulating protective equipment throughout the process, and holds the insulating operating pole to ensure that the high voltage output line is reliably connected to the line to be tested, which not only increases the test personnel, but also makes it easier for the staff holding the insulating operating pole to be unstable when hanging the high voltage output line, causing the high voltage output line to fall down and resulting in personnel casualty accidents. In the patent document with publication number "CN220438415U", a test clamp special for test instrument is disclosed, which cooperates with the clamp, the ring, the handle, the hook and the high voltage stick to hook the hook with the high voltage stick, smoothly move the clamp connected with the high voltage output line to the metal of the line to be tested and clamp and fix it on the metal of the line to be tested, the first jaw and the second jaw can more stably fix the high voltage output line on the metal of the line to be tested, the staff does not need to hold the high voltage stick all the time, and the high voltage stick is prevented from swinging when there is wind, avoiding the high voltage output line from being separated from the metal of the line to be tested, and effectively improving the practicality of the test clamp, but when taking out the clamp, the "shang" head of the high voltage stick is inserted into the ring of the special test clamp from bottom to top, and the special test clamp is separated from the hanging point by force upward. In this process, the rough lines on the inner walls of the first groove of the first jaw and the second groove of the second jaw will wear the surface of the line metal, and after a long time, scratches or burrs will appear on the surface of the line metal, causing abnormal discharge on the surface of the line metal and affecting the service life of the line.

[0004] Therefore, the utility model provides a test line clamp for test instrument with automatic line loosening to solve the above technical problems. UTILITY MODEL CONTENTS

[0005] The utility model discloses a test line clamp for test instrument with automatic line loosening, which solves the technical problems that the way of test personnel hanging test instrument high voltage output line by using insulating operating pole is not efficient, has safety hazards, and the rough lines on the inner walls of the first groove and the second groove of the test clamp will wear the surface of the line metal when the test clamp is removed by force using the stick, causing damage to the surface of the line metal and affecting the service life of the line.

[0006] To achieve the above objectives, this utility model provides a test wire clamp for an automatic wire release tester, comprising: a housing and a clamp, wherein the clamp includes a clamp body one and a clamp body two, the clamp body one and the clamp body two being disposed vertically within the housing and connected by a connecting shaft, the connecting shaft being sleeved with a spring supporting the clamp body one and the clamp body two, and each of the clamp body one and the clamp body two having a handle at one end; and

[0007] The motor is disposed inside the housing and located above the handle portion of the clamp body two;

[0008] The system includes a controller, a Hall sensor, and a battery, with the motor, Hall sensor, and battery connected to the controller.

[0009] A pull rope, one end of which is connected to the lower end of the handle of the clamp body, and the other end of which is connected to the shaft of the motor;

[0010] A crossbar is provided on one side of the handle of the clamp body one. The housing is symmetrically provided with buckles and arc-shaped grooves on both sides, and the two ends of the crossbar extend through the arc-shaped grooves.

[0011] Link rod, the link rod includes an insulating rod body and a hook, the hook is provided at one end of the insulating rod body, the hook includes a vertical rod and a U-shaped horizontal rod, the U-shaped horizontal rod is vertically provided in the middle of the vertical rod, the end of the U-shaped horizontal rod is symmetrically provided with barbs, the vertical rod is a hollow structure, and an electromagnet and a battery are provided inside the vertical rod.

[0012] Preferably, the above technical solution further includes an insulation box, which is disposed inside the housing. The motor, Hall sensor, controller and battery are all disposed inside the insulation box, and the upper end of the insulation box has a wire hole for the pull rope to pass through.

[0013] Preferably, in the above technical solution, the Hall sensor is disposed on the handheld part of the clamp body two.

[0014] Preferably, in the above technical solution, the hand-held part of the clamp body two is made of magnetic metal.

[0015] Preferably, the above technical solution further includes a vibration sensor, which is disposed inside the insulating box and connected to the controller.

[0016] Preferably, in the above technical solution, the insulating rod is provided with a sliding switch, the input end of which is connected to the second battery and the output end is connected to the electromagnet.

[0017] Preferably, in the above technical solution, the other end of both clamp body one and clamp body two is provided with a groove capable of clamping the metal of the circuit to be tested.

[0018] Preferably, the above technical solution also includes an LED indicator light, which is mounted on the insulating box and connected to the controller.

[0019] Compared with existing technologies, this utility model has the following beneficial effects:

[0020] 1. This utility model utilizes a combination of clamp body one, clamp body two, connecting shaft, spring, buckles on both sides of the housing, and link bar to engage the U-shaped crossbar of the link bar with the buckles. The barb at the end of the U-shaped crossbar hooks the crossbar of clamp body one. Then, the link bar moves clamp body two, connected to the high-voltage output line of the test instrument, to the metal surface of the circuit under test. Clamp body one and clamp body two provide clamping and fixation, eliminating the need for the tester to constantly hold the link bar, thus improving testing efficiency and safety. When removing the high-voltage output line, an electromagnet inside the link bar's vertical rod secures the suction clamp. The controller controls the rotation of a motor inside the housing. The motor's shaft tightens the pull rope connected to clamp body one, causing clamp body one to rotate around the connecting shaft against the spring's compression force, thus releasing the clamp. The link bar then removes the clamp. This process does not scratch the metal surface of the circuit under test, effectively improving the practicality and reliability of the test clamp.

[0021] 2. This utility model improves the stability and safety of the test clamp by placing the electrical components of the motor, controller, Hall sensor and battery one inside an insulating box, preventing the electrical components from being discharged through the high voltage of clamp body two and causing them to burn out.

[0022] 3. This utility model uses a Hall sensor to detect the magnetic field formed near clamp two when high voltage passes through clamp two. At the same time, the Hall sensor 101 can also collect the magnetic field near the metal of the test clamp close to the circuit under test. The controller controls the LED indicator to light up, thereby reminding the test personnel that the circuit is energized. This prevents the circuit from being energized in reverse during the test, and prevents the test personnel from disconnecting or connecting the test clamp while it is energized, which could cause damage to the test instrument and personal injury. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0024] Figure 2 This is a cross-sectional view of the present invention.

[0025] Figure 3 This is a schematic diagram of the link bar of this utility model.

[0026] Figure 4 This is a schematic diagram illustrating an embodiment of the present invention.

[0027] Figure 5 This is the electrical schematic diagram of this utility model.

[0028] In the diagram: 1—Shell, 2—Clamp Body 1, 3—Clamp Body 2, 4—Connecting Shaft, 5—Spring, 6—Horizontal Bar, 7—Arc-shaped Groove, 8—Snap Buckle, 9—Pull Rope, 10—Insulation Box, 11—Wire Socket, 12—Insulation Rod, 13—Hook, 1301—Vertical Bar, 1302—U-shaped Horizontal Bar, 13021—Barb, 14—LED Indicator Light, 15—Motor, 16—High Voltage Output Line of Test Instrument, 17—Metal of Circuit Under Test, 100—Controller, 101—Hall Sensor, 102—Vibration Sensor, 103—Battery 1, 104—Battery 2, 105—Slide Switch, 106—Electromagnet. Detailed Implementation

[0029] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. However, it should be understood that the scope of protection of this utility model is not limited to the specific embodiments.

[0030] refer to Figures 1 to 5 A test wire clamp for an automatic wire release tester includes a housing 1, a clamp, a link bar, a motor 15, and a pull rope 9. The clamp includes a first clamp body 2 and a second clamp body 3, which are arranged vertically inside the housing 1 and connected by a connecting shaft 4. A spring 5 supporting the first clamp body 2 and the second clamp body 3 is sleeved on the connecting shaft 4. Each of the first clamp body 2 and the second clamp body 3 has a handle at one end. One end of the handle of the second clamp body 3 has a wire insertion hole 11. The housing 1 is symmetrically arranged on both sides. The clamp has a buckle 8 and an arc-shaped groove 7. The upper end of the handle of the clamp body 1 2 is provided with a crossbar 6, which extends through the arc-shaped groove 7. The motor 15 is located inside the housing 1 and above the handle of the clamp body 2 3. One end of the pull rope 9 is connected to the lower end of the handle of the clamp body 1 2, and the other end is wound around the rotating shaft of the motor 15. When the motor 15 rotates, the pull rope 9 is tightened. The pull rope 9 drives the clamp body 1 2 to overcome the compression force of the spring 5 and rotate around the connecting shaft 4 to realize the action of loosening the clamp.

[0031] The link bar includes an insulating rod body 12 and a hook 13. The hook 13 includes a vertical rod 1301 and a U-shaped horizontal rod 1302. The U-shaped horizontal rod 1302 is perpendicular to the vertical rod 1301, and its end is symmetrically provided with barbs 13021.

[0032] In use, insert the high-voltage output line 16 of the test instrument into the wire socket 11, insert the U-shaped crossbar 1302 of the link bar into the buckle 8 of the housing 1, and then manually open the clamp, allowing the clamp body 2 to rotate around the connecting shaft 4. Use the barb 13021 of the U-shaped crossbar 1302 of the link bar to hook the crossbar 6, and then use the link bar to move the clamp to the vicinity of the metal 17 of the circuit to be tested. Move the link bar downwards so that the U-shaped crossbar 1302 and the barb 13021 disengage from the buckle 8 and the crossbar 6 respectively. 2. Under the restoring force of spring 5, it rotates around the connecting shaft 4, so that clamp body 1 2 and clamp body 2 3 clamp the metal 17 of the circuit to be tested. The bottom of clamp body 1 2 and clamp body 2 3 are provided with grooves that can hold the metal 17 of the circuit to be tested. The inner wall of the groove is provided with rough texture so that clamp body 1 2 and clamp body 2 3 can obtain more contact area and friction when clamping the circuit metal 17, thereby improving the stability when clamping the circuit metal 17. The tester does not need to hold the link bar all the time, which improves the test efficiency and safety.

[0033] Continue to refer to Figure 4 and Figure 5 The test clamp for the automatic wire release tester proposed in this utility model also includes a controller 100, a Hall sensor 101, and a battery 103. The motor 15, Hall sensor 101, and battery 103 are respectively connected to the controller 100. The vertical rod 1301 of the link bar has a hollow structure, and an electromagnet 106 and a battery 104 are installed inside. A sliding switch 105 is installed on the vertical rod 1301. The input end of the sliding switch 105 is connected to the battery 104, and the output end is connected to the electromagnet 106. The handle of the clamp body 3 is made of magnetic metal. In this embodiment, the controller 100 can be a single-chip microcomputer of the STC12 series, the Hall sensor 101 can be a Hall chip of the CH605 model, and the electromagnet 106 is a square electromagnet.

[0034] At the end of the test, the tester opened the sliding switch 105 of the link bar's vertical rod 1301, allowing battery 104 to power electromagnet 106. Under the action of electromagnet 106, the vertical rod 1301 became magnetic. Then, the maintenance personnel lifted the link bar, causing the vertical rod 1301 to come into contact with and attract the clamp body 3 of the clamp on the metal 17 of the circuit under test. After the controller 100 detected the strong magnetic field of the vertical rod 1301 through the Hall sensor 101, the controller 100 output a control signal to control the motor 15 to rotate. The rotating shaft of clamp 5 drives the pull rope 9 to drive clamp body 2 to rotate around the connecting shaft 4 against the compression force of spring 5, realizing the action of releasing the clamp. The tester then removes the clamp using a linker. Throughout the process, the rough texture of the grooves of clamp body 2 and clamp body 3 will not scratch the surface of the metal 17 of the circuit under test. This avoids the technical problem in the prior art where the clamp is forcefully separated from the attachment point, and the rough texture of the inner wall of the clamp groove will wear down the surface of the circuit metal. Over time, scratches or burrs will appear on the surface of the circuit metal, causing abnormal discharge on the surface of the circuit metal and affecting the service life of the circuit. This effectively improves the practicality and reliability of the test clamp.

[0035] Preferably, continue to refer to Figure 2 The test clamp for the automatic wire release tester proposed in this utility model also includes an insulating box 10. The insulating box 10 is located inside the housing 1. The motor 15, Hall sensor 101, controller 100 and battery 103 are all located inside the insulating box 10. The upper end of the insulating box 10 has a wire hole for the pull rope 9 to pass through. The Hall sensor 101 is located on one side of the insulating box 10 above the handle of the clamp body 2 3. By placing these electrical components, such as the motor 15, Hall sensor 101, controller 100 and battery 103, inside the insulating box 10, the high voltage of the clamp body 2 is prevented from discharging to the electrical components inside the insulating box, which would cause the electrical components to burn out. This improves the stability and safety of the test clamp operation.

[0036] Preferably, the test clamp for the automatic wire release tester proposed in this utility model also includes a vibration sensor 102. The vibration sensor 102 is installed inside the insulation box 10 and is connected to the controller 100. The vibration sensor 102 detects the vibration generated when the tester removes the clamp, caused by the vertical rod 1301 of the clamping rod colliding with the clamp body 3. Combined with the strong magnetic signal collected by the Hall sensor 101, the controller 100 sends a control signal to drive the motor 15 to rotate and perform the clamp release action. This ensures that the vertical rod 1301 contacts and adheres to the clamp body 3 before the clamp release action is performed, preventing the motor 15 from prematurely releasing the clamp, which could cause the test clamp to fall off the line with the high voltage output wire 16, resulting in damage to the test clamp or injury to the tester. This improves the reliability of the test clamp. In this embodiment, the vibration sensor 102 can be a displacement sensor of model BMI160.

[0037] Preferably, the test clamp for the automatic wire release tester proposed in this utility model also includes an LED indicator 14. The LED indicator 14 is located on the insulating box 10 and is connected to the controller 100. The controller 100 detects the magnetic field formed near the clamp body 3 when high voltage passes through the clamp body 3 via the Hall sensor 101. At the same time, the controller 100 can also collect the magnetic field near the metal 17 of the test line near the test line via the Hall sensor 101. The controller 100 controls the LED indicator 14 to light up, thereby reminding the test personnel that the line is energized and preventing reverse power supply during the test. This would prevent the test personnel from disconnecting or connecting the test clamp while it is energized, which could cause damage to the tester and personal injury.

[0038] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the invention, as well as various different choices and variations. The scope of the invention is intended to be defined by the claims and their equivalents.

Claims

1. An automatic line loosening test line clamp for a test sender, comprising a housing and a clamp, the clamp comprising a first clamp body and a second clamp body movably connected by a connecting shaft, one end of the first clamp body and the second clamp body being arranged in the housing, a spring supporting the first clamp body and the second clamp body being arranged outside the connecting shaft, one end of the first clamp body and the second clamp body each being provided with a hand holding portion, characterized in that, Also include: The motor is arranged in the shell; The controller, Hall sensor and battery one, the motor, Hall sensor and battery one are connected with the controller respectively; Pull rope, one end of the pull rope is connected with the hand-held part of the first jaw, the other end is connected with the rotating shaft of the motor; Crossbar, which is provided on one side of the hand-held part of the first jaw, the shell is symmetrically provided with buckles and arc-shaped grooves, and the crossbar penetrates through the arc-shaped grooves; The insulating rod body and the hook are arranged on one end of the insulating rod body, the hook includes a vertical rod and a U-shaped crossbar, the U-shaped crossbar is arranged vertically on the middle part of the vertical rod, the U-shaped crossbar is symmetrically provided with barbs at the end, the vertical rod is a hollow structure, and the vertical rod is provided with an electromagnet and a battery two.

2. The self-releasing test line clamp for a test sender according to claim 1, characterized in that, One end of the hand-held part of the second jaw is provided with a wire insertion hole.

3. The self-releasing test line clamp for a test sender according to claim 1, characterized in that, Also include an insulating box, the motor, Hall sensor, controller and battery one are arranged in the insulating box, the upper end of the insulating box is provided with a wire hole for the pull rope to pass through.

4. The self-releasing test line clamp for a test sender according to claim 3, characterized in that, The Hall sensor is arranged on the hand-held part of the second jaw.

5. The self-loosening test line clamp for a test sender according to claim 1, characterized by The hand-held part of the second jaw is a magnetically conductive metal.

6. The self-releasing test line clamp for a test line dispenser according to claim 3, wherein Also include a vibration sensor, the vibration sensor is arranged in the insulating box, and the vibration sensor is connected with the controller.

7. The self-loosening test line clamp for a test sender according to claim 1, characterized by The insulating rod body is provided with a sliding switch, the input end of the sliding switch is connected with the battery two, and the output end is connected with the electromagnet.

8. The self-loosening test line clamp for a test sender according to claim 1, characterized by The other end of the first jaw and the second jaw is provided with a groove capable of clamping the metal of the to-be-measured circuit.

9. The self-loosening test line clamp for a test sender according to claim 3, characterized by Also include LED indicator light, the LED indicator light is arranged on the insulating box, and the LED indicator light is connected with the controller.

Images