Improved grounding wire for copper bar

Abstract

The invention relates to the technical field of wiring equipment, in particular to an improved grounding wire for a copper bar, which comprises an automatic take-up box, a winding drum is mounted in the automatic take-up box, a cable is wound on the winding drum, one end of the cable extends out of the automatic take-up box and is provided with a connecting rod, a locking device is mounted on the automatic take-up box, and a chuck structure is mounted at the end of the connecting rod. And an operating handle is mounted on one side of the connecting rod. According to the improved grounding wire for the copper bar, the automatic take-up box is arranged, and the internal winding drum is matched with the coil spring through the pin shaft, so that the length of the cable can be automatically adjusted, and the cable can be stored. Compared with a traditional ground wire fixed length design, the structure can adapt to copper bars of different heights, and the problem of abrasion caused by the fact that a cable is too long to be in contact with the ground is solved. The locking device of the automatic take-up box realizes rapid locking and unlocking of the winding drum through cooperation of a pressing rod, a pressing plate, a locking rod and other parts, is convenient to operate, and overcomes the defects that a traditional telescopic wire box is high in mistaken touch risk, and multiple instruments cannot be grounded at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of wiring equipment, in particular to an improved grounding wire for a copper busbar. Background Art

[0002] During the operation of power systems and various types of electrical equipment, safe grounding is a key step in ensuring personnel safety and stable equipment operation. As a key component for effective grounding, the performance of copper busbar grounding wire directly affects the grounding effect. With the rapid development of the power industry, the scale of electrical equipment continues to expand, and the operating environment becomes increasingly complex, the requirements for copper busbar grounding wire are also increasing. At present, there are many types of grounding wires for copper busbars on the market. For example, Yangzhong Hyatt Copper Materials Co., Ltd. applied for a "grounding copper busbar" in December 2023 (authorization announcement number CN 222146781 U). This design uses the elasticity of the first spring to fix the grounding wire by setting a connection block and a pressure plate on the top of the copper busbar body, which simplifies the wiring operation to a certain extent and avoids the tedious process of tightening or loosening the terminal with a screwdriver. However, this structure still has limitations in actual use. The connection method between the grounding wire and the copper busbar is relatively simple, and it lacks flexibility when facing copper buses of different specifications or complex installation environments. In addition, the design is not optimized for the storage and management of grounding wires. In actual operations, excessively long grounding wires are prone to problems such as entanglement and dragging on the ground, which not only affects work efficiency, but may also cause insulation performance to deteriorate due to wear, posing a safety hazard. For example, Dongguan Hongweixiang Electronic Technology Co., Ltd. applied for a “grounding copper busbar with an improved structure” in January 2024 (authorization announcement number CN222191353U). The device combines a first copper busbar with a second copper busbar and installs multiple support bases at the bottom to enhance the structural stability. At the same time, new fixing bases and connection components are provided to reduce the friction and wear between the connecting wire and the copper busbar. However, this grounding copper busbar pays less attention to the structural optimization of the grounding wire itself, such as the clamping stability of the chuck and the convenience of operation. In actual application scenarios, especially when working at high altitude or when the grounding position needs to be adjusted frequently, the existing grounding wire chucks are prone to problems such as loose clamping and inconvenient operation, which affect the smooth progress of the grounding work. Let's look at the "A grounding copper busbar connection structure for busbars" applied for by Guangdong Power Grid Co., Ltd. on August 2, 2019 (application number 201921244758.4). This structure realizes the connection of the grounding copper busbars between busbars by providing the first and second busbar units and the intermediate transfer box. However, this patent mainly focuses on the connection design between the copper buses in the busbar system, and does not give enough consideration to the convenience and stability of the overall operation process from the grounding wire outlet end to the copper busbar clamping end. In daily electrical equipment maintenance and repair work, operators need a grounding wire for copper buses that is more convenient to carry, simple to operate, and firmly clamped. Furthermore, some existing grounding wire retraction devices also have numerous drawbacks. For example, some wire storage boxes simply control the length of the wire extension through a retractable cable box, failing to meet the needs of grounding multiple instruments simultaneously. They also present a high risk of accidental contact and low safety (see related technical introduction on Jigao.com). While automatic grounding wire retraction boxes for substations have addressed the issues of grounding wire entanglement and automatic retraction to some extent, their complex structure, large size, and high cost hinder their widespread application in grounding various small electrical equipment (see the patent "Method for Manufacturing Automatic Grounding Wire Retraction Box for Substations"). In summary, the existing copper busbar grounding wire has deficiencies in the clamping stability of the clamp structure, the convenience and durability of the operating handle, the torsion resistance of the connection between the grounding wire and the clamp, the adaptive adjustment of the cable length, and the versatility and safety of the overall structure, and cannot well meet the increasingly complex grounding needs of electrical equipment. Summary of the Invention

[0003] The purpose of the present invention is to provide an improved copper busbar grounding wire to solve the problem raised in the above-mentioned background art that the existing copper busbar grounding wire has deficiencies in the clamping stability of the clamping structure, the convenience and durability of the operating handle, the torsion resistance of the connection between the grounding wire and the clamp, the adaptive adjustment of the cable length, and the versatility and safety of the overall structure, and is unable to well meet the grounding needs of increasingly complex electrical equipment.

[0004] To achieve the above-mentioned objectives, the present invention provides an improved grounding wire for a copper busbar, comprising an automatic wire-reeling box, a reel installed in the automatic wire-reeling box, a cable wound on the reel, one end of the cable extending out of the automatic wire-reeling box and installed with a connecting rod, a locking device installed on the automatic wire-reeling box, a clamping structure installed at the end of the connecting rod, an operating handle installed on one side of the connecting rod, and a locking structure installed on the operating handle.

[0005] This configuration defines the overall structure of the improved copper busbar grounding cable. The automatic take-up box stores and adjusts the cable length, while the reel acts as the carrier for the cable winding. One end of the cable extends from the automatic take-up box and connects to a connecting rod, which connects the clamping structure to the operating handle. A locking device locks the reel, controlling the cable's retraction and extension. A locking structure on the operating handle controls the opening and closing of the clamping structure. These components work together to form a complete grounding system, ensuring grounding of the copper busbar.

[0006] As a preferred solution of the present invention, the middle portion of the reel is rotatably connected to the inner wall of the automatic wire take-up box via a pin, and a coil spring is installed at the pin.

[0007] In this setting, the middle part of the reel is rotatably connected to the inner wall of the automatic wire reel box through a pin, and a coil spring is installed at the pin. The elastic potential energy of the coil spring is utilized. When the cable is pulled out, the coil spring deforms and stores energy; when the cable needs to be retracted, the coil spring releases the elastic potential energy, driving the reel to rotate, thereby realizing automatic cable recovery.

[0008] As a preferred solution of the present invention, the locking device includes a pressure rod, an arc-shaped pressure plate is installed at the bottom end of the pressure rod, a locking rod is provided on one side of the pressure rod, a locking block is installed on one side of the locking rod, and two upper and lower locking openings are opened on one side of the pressure rod near the locking block. When the pressure rod is manually pressed, the pressure rod is driven downward so that the end of the locking block is stuck in the upper locking opening. At this time, the pressure rod is locked, and the pressure plate at the bottom locks the reel.

[0009] This locking device is set by manually pressing the pressure rod, so that the pressure rod drives the pressure plate to press down. When the pressure rod is pressed down to a certain position, the locking block is engaged with the upper locking hole on the pressure rod under the action of the tensioning spring, thereby locking the pressure rod. At this time, the pressure plate presses the reel tightly, restricting the rotation of the reel and locking the cable length. When the lock needs to be released, the locking rod is manually pushed to overcome the action of the tensioning spring and move in the opposite direction, so that the locking block disengages from the locking hole. Under the action of the tensioning spring, the pressure rod moves upward, the pressure plate releases the reel, the reel can rotate freely, and the cable can be retracted and released.

[0010] As a preferred solution of the present invention, a tensioning spring is installed between the upper part of the pressure plate and the inner wall of the automatic wire winding box, a movable column is installed on the other side of the locking rod, the outer end of the movable column is provided with a fixed sleeve, and the fixed sleeve is fixed on the inner wall of the automatic wire winding box, and a tightening spring is installed inside the fixed sleeve to drive the locking block on the movable column to fit into the locking mouth. When the locking rod is manually pushed to overcome the action of the tightening spring and move in the opposite direction, the locking block disengages from the locking mouth, and then the tensioning spring is used to move the pressure rod upward, so that the pressure plate unlocks the reel.

[0011] This item sets a tension spring between the upper part of the pressure plate and the inner wall of the automatic winding box. When the locking block disengages the locking hole, it provides an upward pulling force, causing the pressure rod and pressure plate to move upward, thereby unlocking the reel. The structure composed of a movable column, a fixed sleeve, and a tension spring on one side of the locking rod. When the pressure rod is pressed down, the tension spring pushes the movable column and locking block, causing them to snap into the locking hole of the pressure rod, thereby locking the pressure rod and reel. When the locking rod is pushed, the resistance of the tension spring is overcome, causing the locking block to disengage the locking hole, and then the tension spring completes the unlocking action.

[0012] As a preferred embodiment of the present invention, the chuck structure includes a movable chuck and a fixed chuck, the movable chuck is integrally connected to the operating handle, the connection between the movable chuck and the operating handle is rotatably connected to the connecting rod through a pin shaft, the end heads of the movable chuck and the fixed chuck are provided with arc-shaped clamping openings, and the inner walls of the clamping openings are installed with a plurality of serrations.

[0013] This clamping mechanism utilizes a combination of a movable and fixed clamp. The movable clamp is integrally formed with the operating handle and pivotally connected to the connecting rod via a pin. When the operating handle is actuated, the movable clamp rotates around the pin. The curved clamping openings at the ends of the movable and fixed clamps precisely conform to the shape of the busbar. The serrations on the inner walls increase friction with the surface of the busbar, embedding the serrations when clamping the busbar for a secure grip.

[0014] As a preferred solution of the present invention, one end of the connecting rod is rotatably connected to one end of the cable through a ball joint, the interior of the connecting rod is a hollow structure, an arc-shaped guide groove is installed inside the connecting rod, a clamping spring is installed in the guide groove, and an arc-shaped guide rod is installed on one side of the operating handle, one end of the guide rod slides in cooperation with the guide groove, the clamping spring drives the guide rod to move, and then the operating handle is opened, driving the movable chuck and the fixed chuck to close, and clamping the external copper busbar.

[0015] This feature features a connecting rod with a spherical joint at one end, allowing the cable to rotate freely in all directions to accommodate varying loads. The curved guide groove and clamping spring inside the connecting rod cooperate with the guide rod on the operating handle. When the clamping spring pushes the guide rod to slide within the guide groove, the operating handle opens, causing the movable chuck to rotate around the pin and close with the fixed chuck, effectively clamping the busbar. To release the chuck, reverse the operation, compressing the clamping spring, sliding the guide rod, resetting the operating handle, and opening the chuck.

[0016] As a preferred solution of the present invention, the locking structure includes a block installed at the end of the operating handle and a limit plate installed inside the connecting rod. A protrusion is installed on one side of the block, and a bayonet is provided on the connecting rod. One end of the limit plate is connected to the inner wall of the connecting rod through a locking spring. When the operating handle is manually gripped, the block can be snapped into the bayonet, driving the protrusion to be snapped into the inner side of the limit plate. The limit plate is horizontally retracted and ejected by the locking spring, which facilitates the protrusion to be snapped into the inner side of the limit plate.

[0017] In this locking structure, when the operating handle is manually gripped, the block is locked into the slot on the connecting rod, and at the same time, the protrusion is driven to be locked into the inner side of the limit plate. Under the action of the locking spring, the limit plate is horizontally retracted and ejected to ensure that the protrusion can be stably stuck on the inner side of the limit plate, thereby locking the position of the operating handle and keeping the chuck in the open or closed state; when the lock needs to be released, the limit plate is driven back by the operating rod to make the protrusion disengage from the inner side of the limit plate, and the operating handle is reset under the action of the clamping spring and other components.

[0018] As a preferred solution of the present invention, an operating rod capable of horizontal movement is installed on the upper part of the limit plate. The operating rod drives the limit plate back through manual operation, so that the protrusion is unlocked, and then the operating handle is reset, thereby realizing the clamping and locking of the copper busbar by the clamping structure.

[0019] This item sets an operating lever on the upper part of the limit plate, which can be manually operated to drive the limit plate to move horizontally. When the lock needs to be released, push the operating lever to retract the limit plate, thereby unlocking the protrusion. The operating handle is reset under the action of the clamping spring and other components, and the clamp structure locks or releases the copper busbar. When the clamp needs to be locked, manually grip the operating handle to snap the block and protrusion into place. The limit plate is pushed out by the locking spring, locking the protrusion and maintaining the clamp state.

[0020] Compared with the prior art, the present invention has the following beneficial effects: In the improved copper busbar grounding wire, the present invention provides an automatic wire take-up box, and the internal reel cooperates with the spring through the pin shaft to realize automatic adjustment and storage of the cable length. Compared with the fixed length design of the traditional grounding wire, this structure can adapt to copper buses of different heights, avoiding the wear problem caused by the cable being too long and dragging on the ground. The locking device of the automatic wire take-up box realizes the rapid locking and unlocking of the reel through the cooperation of the pressure rod, pressure plate, locking rod and other components, and is easy to operate. Compared with the traditional telescopic wire box with high risk of accidental touch and the defect of not being able to ground multiple instruments at the same time, the present invention is safer and can meet the needs of various grounding scenarios, significantly improving the efficiency and reliability of cable management. The chuck structure uses a movable chuck in conjunction with a fixed chuck. The inner wall of the arc-shaped clamping opening at the end is provided with serrations, which can increase the contact friction with the copper busbar. Compared with the problem of the existing grounding wire chuck not being able to clamp firmly, the present invention can provide a stronger clamping force to prevent the copper busbar from slipping during use. The movable chuck is integrally formed with the operating handle and is rotatably connected to the connecting rod via a pin. The linkage design of the clamping spring in the connecting rod, the guide groove, and the guide rod of the operating handle realizes the rapid opening and closing of the chuck. In the scenario of high-altitude operation or frequent adjustment of the grounding position, compared with the inconvenient operation of the traditional chuck, the present invention is simpler and more efficient to operate, greatly improving the stability and efficiency of the grounding work. The locking structure of the operating handle achieves locking and unlocking of the operating handle's open and closed states through a combination of a clamping block, a protrusion, a limit plate, a locking spring, and an operating lever. During use, the operating handle is manually gripped, and the clamping block and the protrusion engage the inner side of the limit plate, keeping the chuck open. This eliminates the need for the operator to exert continuous force, significantly reducing labor intensity and improving operational safety, especially during aerial work. When disassembly is required, the limit plate is retracted via the operating lever to easily release the lock. Compared to traditional grounding wires that lack a reliable locking structure, the present invention is more convenient and safer to operate, effectively improving the user experience. One end of the connecting rod is connected to the cable through a spherical joint, which can effectively deal with the torsional external force on the grounding wire and avoid damage to the connection. Compared with the problem of the insulation sheath of the existing grounding wire being broken due to torsion, the present invention significantly improves the reliability and insulation performance of the connection. The connection design between the various components is reasonable. For example, the reel and the automatic winding box, the clamp and the connecting rod, etc., all adopt a stable and easy-to-operate connection method. The overall structure is compact. Compared with the problems of some existing grounding wires with complex structures, large volumes and high costs, the present invention has better versatility and practicality, can be widely used in various electrical equipment grounding scenarios, and provides more reliable protection for the safe grounding of electrical equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the structure of the locking device in the present invention; Figure 3 It is a partial structural schematic diagram of the present invention; Figure 4 Schematic diagram of the locking structure of the present invention; The meaning of each number in the figure is: 1. Automatic take-up box; 2. Reel; 3. Cable; 4. Locking device; 41. Pressure rod; 411. Locking mouth; 42. Pressure plate; 44. Tensioning spring; 45. Locking rod; 46. Locking block; 47. Movable column; 48. Fixed sleeve; 5. Connecting rod; 51. Guide groove; 52. Clamping spring; 6. Operating handle; 61. Guide rod; 7. Locking structure; 71. Block; 72. Bump; 73. Limiting plate; 74. Operating rod; 75. Locking spring; 8. Clamp structure; 81. Movable chuck; 82. Fixed chuck; 83. Clamping mouth; 831. Sawtooth. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] The present invention provides an improved copper busbar grounding wire, such as Figure 1 As shown, it includes an automatic wire taking-up box 1, a reel 2 is installed in the automatic wire taking-up box 1, a cable 3 is wound on the reel 2, one end of the cable 3 extends out of the automatic wire taking-up box 1 and is installed with a connecting rod 5, a locking device 4 is installed on the automatic wire taking-up box 1, a clamping structure 8 is installed at the end of the connecting rod 5, an operating handle 6 is installed on one side of the connecting rod 5, and a locking structure 7 is installed on the operating handle 6.

[0024] This section clarifies the overall structure of the improved copper busbar grounding wire, which consists of an automatic wire take-up box 1, a reel 2, a cable 3, a locking device 4, a connecting rod 5, an operating handle 6, a locking structure 7, and a clamping structure 8. The automatic wire take-up box 1 is the core component, and the internal reel 2 is used to wind the cable 3. One end of the cable 3 extends out of the automatic wire take-up box 1 and is connected to the connecting rod 5. The locking device 4 is installed on the automatic wire take-up box 1 and can lock the reel 2, thereby controlling the retraction and extension of the cable 3. The clamping structure 8 is installed at the end of the connecting rod 5, and the operating handle 6 is installed on one side. The locking structure 7 on the operating handle 6 can control the opening and closing state of the clamping structure 8. The various components work together to achieve the grounding connection of the copper busbar. The basic structure of the grounding wire is clearly defined. Compared with the problems of loose structure and single function of the existing grounding wire, the present invention, through a scientific structural layout, enables the grounding wire to have functions such as autonomous adjustment of cable length and precise control of clamp opening and closing. It can meet the grounding needs of copper busbars in various scenarios and significantly improve the convenience and applicability of grounding operations.

[0025] In this embodiment, Figure 1 As shown, the middle portion of the reel 2 is rotatably connected to the inner wall of the automatic take-up box 1 via a pin, and a coil spring is installed at the pin.

[0026] The middle part of the reel 2 is rotatably connected to the inner wall of the automatic winding box 1 via a pin, and a coil spring is installed at the pin. When the cable 3 is pulled outward, the coil spring undergoes elastic deformation, storing elastic potential energy; when no external force is applied or the cable 3 needs to be retracted, the coil spring releases the elastic potential energy, driving the reel 2 to rotate, thereby realizing the automatic retraction of the cable 3. This effectively solves the problem of traditional grounding cables being difficult to store and prone to wear and tear from dragging on the ground. This design can automatically adjust the length of the cable 3 according to actual use needs and automatically retract it after use, avoiding wear and tear caused by dragging the cable 3 on the ground, extending the service life of the cable 3, and making the grounding cable more regular as a whole, making it easier to carry and operate.

[0027] Specifically, such as Figure 2 As shown, the locking device 4 includes a pressure rod 41, and an arc-shaped pressure plate 42 is installed at the bottom end of the pressure rod 41. A locking rod 45 is provided on one side of the pressure rod 41, and a locking block 46 is installed on one side of the locking rod 45. Two upper and lower locking openings 411 are opened on one side of the pressure rod 41 near the locking block 46. When the pressure rod 41 is manually pressed, the pressure rod 41 is driven to be pressed downward, so that the end of the locking block 46 is stuck in the upper locking opening 411. At this time, the pressure rod 41 is locked, and the bottom pressure plate 42 locks the reel 2.

[0028] The locking device 4 is mainly composed of a pressure rod 41, a pressure plate 42, a locking rod 45 and a locking block 46. When the pressure rod 41 is manually pressed, the pressure rod 41 drives the arc-shaped pressure plate 42 at the bottom to move downward. When the pressure rod 41 is pressed down to a specific position, the locking block 46, under the action of the tensioning spring, is clamped into the locking port 411 above the side of the pressure rod 41. At this time, the pressure rod 41 is locked, and the pressure plate 42 presses the reel 2 tightly to limit its rotation, thereby locking the length of the cable 3. To release the lock, manually push the locking rod 45 to overcome the force of the tensioning spring and make it move in the opposite direction. The locking block 46 disengages from the locking port 411. Under the action of the tensioning spring 44, the pressure rod 41 moves upward, the pressure plate 42 releases the reel 2, and the reel 2 can rotate freely, allowing the cable 3 to be retracted and released. Compared with traditional cable locking methods, this locking device is easy to operate and has a stable locking. The operator only needs to press and push to quickly lock and unlock the length of cable 3, which improves operating efficiency. During use, it can effectively prevent the cable 3 from changing its length due to accidental loosening, ensuring the stability and safety of the grounding operation.

[0029] Further, such as Figure 2As shown, a tensioning spring 44 is installed between the upper part of the pressure plate 42 and the inner wall of the automatic winding box 1, and a movable column 47 is installed on the other side of the locking rod 45. The outer end of the movable column 47 is provided with a fixed sleeve 48, and the fixed sleeve 48 is fixed on the inner wall of the automatic winding box 1. A tightening spring is installed inside the fixed sleeve 48, which drives the locking block 46 on the movable column 47 to fit into the locking port 411. When the locking rod 45 is manually pushed to overcome the action of the tightening spring and move in the opposite direction, the locking block 46 disengages from the locking port 411, and then the tensioning spring 44 is used to move the pressure rod 41 upward, so that the pressure plate 42 unlocks the reel 2.

[0030] The tensioning spring 44 installed between the upper part of the pressure plate 42 and the inner wall of the automatic winding box 1 provides an upward pulling force when the locking block 46 disengages from the locking port 411, prompting the pressure rod 41 and the pressure plate 42 to move upward, thereby unlocking the reel 2. The structure composed of the movable column 47, the fixed sleeve 48 and the tensioning spring on the other side of the locking rod 45, when the pressure rod 41 is pressed down, the tensioning spring pushes the movable column 47 and the locking block 46 so that they are stuck in the locking port 411 of the pressure rod 41, thereby completing the locking of the pressure rod 41 and the reel 2. When the locking rod 45 is pushed, the resistance of the tensioning spring is overcome, causing the locking block 46 to disengage from the locking port 411, and then unlocking is achieved under the action of the tensioning spring 44. The working principle of the locking device 4 is further refined, and the synergistic effect between the springs is used to make the locking and unlocking process smoother and more stable. Compared with some locking mechanisms with complex structures and cumbersome operations, this device has low cost and high reliability, reduces the risk of the grounding wire being unable to be used normally due to failure of the locking device 4, and enhances the overall stability and service life of the grounding wire.

[0031] Further, such as Figure 3 As shown, the clamp structure 8 includes a movable clamp 81 and a fixed clamp 82. The movable clamp 81 is integrally connected to the operating handle 6. The connection between the movable clamp 81 and the operating handle 6 is rotatably connected to the connecting rod 5 through a pin shaft. The ends of the movable clamp 81 and the fixed clamp 82 are provided with an arc-shaped clamping opening 83, and the inner wall of the clamping opening 83 is installed with a plurality of serrations 831.

[0032] The chuck structure 8 consists of a movable chuck 81 and a fixed chuck 82. The movable chuck 81 is integrally formed with the operating handle 6 and is rotatably connected to the connecting rod 5 via a pin. When the operating handle 6 is actuated, the movable chuck 81 can be driven to rotate around the pin. The arc-shaped clamping opening 83 at the ends of the movable chuck 81 and the fixed chuck 82 can better fit the shape of the copper busbar. The several serrations 831 on the inner wall increase the friction with the surface of the copper busbar. When clamping the copper busbar, the serrations 831 are embedded in the surface of the copper busbar to achieve a firm clamping. This effectively solves the problem that the existing grounding wire chuck is not firmly clamped and easily slips off. The design of the arc-shaped clamping opening 83 and the serrations 831 greatly improves the clamping force and stability of the chuck on the copper busbar. Even if subjected to external force, the copper busbar is not easy to fall out of the chuck, ensuring the reliability of the grounding connection and protecting the safety of power equipment and personnel.

[0033] Further, such as Figure 3 As shown, one end of the connecting rod 5 is rotatably connected to one end of the cable 3 through a ball joint. The interior of the connecting rod 5 is a hollow structure. An arc-shaped guide groove 51 is installed inside the connecting rod 5. A clamping spring 52 is installed in the guide groove 51. An arc-shaped guide rod 61 is installed on one side of the operating handle 6. One end of the guide rod 61 slides with the guide groove 51. The clamping spring 52 drives the guide rod 61 to move, thereby opening the operating handle 6, driving the movable clamp 81 and the fixed clamp 82 to close, and clamping the external copper busbar.

[0034] One end of the connecting rod 5 is rotatably connected to the cable 3 via a ball joint, allowing the cable 3 to rotate freely in all directions to adapt to different stress conditions. The interior of the connecting rod 5 is a hollow structure, provided with an arc-shaped guide groove 51 and a clamping spring 52, which cooperates with the arc-shaped guide rod 61 on one side of the operating handle 6. When the clamping spring 52 pushes the guide rod 61 to slide in the guide groove 51, it drives the operating handle 6 to open, thereby causing the movable chuck 81 to rotate around the pin shaft and close with the fixed chuck 82 to clamp the copper busbar; the reverse operation compresses the clamping spring 52, the guide rod 61 slides, the operating handle 6 resets, and the chuck opens. This design realizes the linkage control of the opening and closing of the chuck, which is simple and efficient to operate. The ball joint connection method improves the flexibility of the grounding wire in use, can effectively cope with complex installation environments and external forces, and avoids damage to the connection caused by the twisting of the cable 3. At the same time, the cooperation of the clamping spring 52, the guide rod 61, and the guide groove 51 makes the opening and closing of the chuck smoother and more stable, optimizing the user's operating experience.

[0035] Further, such as Figure 4As shown, the locking structure 7 includes a block 71 installed at the end of the operating handle 6 and a limit plate 73 installed inside the connecting rod 5. A protrusion 72 is installed on one side of the block 71, and a bayonet is provided on the connecting rod 5. One end of the limit plate 73 is connected to the inner wall of the connecting rod 5 through a locking spring 75. When the operating handle 6 is manually gripped, the block 71 can be clamped into the bayonet, driving the protrusion 72 to clamp into the inner side of the limit plate 73. The limit plate 73 is horizontally retracted and ejected by the locking spring 75, which facilitates the protrusion 72 to clamp into the inner side of the limit plate 73.

[0036] The locking structure 7 includes a block 71 mounted on the end of the operating handle 6 and a stopper plate 73 mounted inside the connecting rod 5. When the operating handle 6 is manually gripped, the block 71 engages the stopper on the connecting rod 5, driving the protrusion 72 to engage the inner side of the stopper plate 73. Under the action of the locking spring 75, the stopper plate 73 retracts and ejects horizontally, ensuring that the protrusion 72 is stably engaged inside the stopper plate 73, thereby locking the position of the operating handle 6 and maintaining the open or closed state of the clamp. When the lock is released, the stopper plate 73 is retracted by the operating rod 74, disengaging the protrusion 72 from the inner side of the stopper plate 73. The operating handle 6 is then reset under the action of the clamping spring 52 and other components. This solves the problem of existing grounding wire operating handles requiring continuous manual force to maintain their position. The locking structure 7 reliably locks the operating handle 6 in place. When working at height or for long periods of time, the operator no longer needs to maintain a tight grip on the operating handle 6, reducing labor intensity and improving work efficiency and safety. The design of the operating lever 74 makes the unlocking operation simple and convenient, and facilitates the quick completion of the grounding and disassembly operations.

[0037] Further, such as Figure 4 As shown, an operating rod 74 capable of horizontal movement is installed on the upper part of the limit plate 73. The operating rod 74 drives the limit plate 73 to retract through manual operation, so that the protrusion 72 is unlocked, and then the operating handle 6 is reset, thereby realizing the clamping and locking of the copper busbar by the clamping structure 8.

[0038] The operating rod 74 on the upper part of the limit plate 73 can drive the limit plate 73 to move in the horizontal direction through manual operation. When the lock needs to be released, push the operating rod 74 to retract the limit plate 73, the protrusion 72 is unlocked, and the operating handle 6 is reset under the action of the clamping spring 52 and other components, so that the clamping, locking or loosening of the copper busbar by the clamping structure 8 is achieved; when the clamp needs to be locked, manually hold the operating handle 6 so that the block 71 and the protrusion 72 are clamped into the corresponding positions, and the limit plate 73 is pushed out under the action of the locking spring 75, locking the protrusion 72 and maintaining the clamping state. The unlocking operation method of the locking structure 7 is further clarified, and the setting of the operating rod 74 makes the unlocking process more intuitive and simple. Compared with some structures with complex unlocking operations, the design of the present invention reduces the difficulty of operation. Even in an emergency, the operator can quickly and accurately complete the unlocking and resetting operations of the clamp, thereby improving the safety and reliability of the use of the grounding wire.

[0039] When the improved copper busbar grounding wire of the present invention is in use, first, manually push the locking rod 45 to overcome the resistance of the tightening spring in the fixing sleeve 48, so that the locking block 46 is disengaged from the locking port 411 on the pressure rod 41. Under the action of the tensioning spring 44, the pressure rod 41 and the pressure plate 42 move upward, and the reel 2 is unlocked. Then, according to actual needs, the cable 3 is pulled outward, the reel 2 rotates at the pin, and the coil spring undergoes elastic deformation to store elastic potential energy. After the cable 3 is pulled out to the appropriate length, the pressure rod 41 is manually pressed, and the pressure rod 41 drives the pressure plate 42 to press down. When the pressure rod 41 is pressed down to a specific position, the locking block 46 is under the action of the tightening spring, and the end is stuck in the locking port 411 above one side of the pressure rod 41. The pressure rod 41 is locked, and the pressure plate 42 tightly presses the reel 2 to complete the locking of the length of the cable 3. To open the chucks: Manually grip the operating handle 6. The guide rod 61 on one side of the operating handle 6 slides within the arcuate guide groove 51 inside the connecting rod 5, compressing the clamping spring 52. Because the movable chuck 81 is integrally formed with the operating handle 6 and pivotally connected to the connecting rod 5 via a pin, the movement of the operating handle 6 causes the movable chuck 81 to rotate about the pin, causing the movable chuck 81 and the fixed chuck 82 to open, revealing the arcuate clamping opening 83. Chuck locking and copper bar clamping: Continue to hold the operating handle 6 tightly so that the block 71 at the end of the operating handle 6 is snapped into the slot on the connecting rod 5, driving the protrusion 72 to snap into the inner side of the limit plate 73. Under the action of the locking spring 75, the limit plate 73 ensures that the protrusion 72 is stably stuck on the inner side of the limit plate 73 through horizontal retraction and ejection, thereby locking the position of the operating handle 6 and keeping the chuck open. Place the copper bar between the movable chuck 81 and the arc-shaped clamping opening 83 of the fixed chuck 82, release the operating handle 6, and under the action of the clamping spring 52, the guide rod 61 slides, the operating handle 6 is reset, the movable chuck 81 and the fixed chuck 82 are closed, and the serrations 831 on the inner wall of the arc-shaped clamping opening 83 are embedded in the surface of the copper bar, achieving a firm clamping of the copper bar. When the grounding operation is completed and the grounding wire needs to be removed: Unlocking the clamp: Manually operate the operating lever 74 on the upper portion of the limit plate 73 to move the limit plate 73 back horizontally, thereby unlocking the protrusion 72. The operating handle 6 is reset under the action of the clamping spring 52, and the movable clamp 81 and the fixed clamp 82 open, releasing the clamp on the copper busbar. Cable Retraction: Push locking lever 45 again to disengage locking block 46 from locking notch 411. Under the action of tension spring 44, pressure lever 41 and pressure plate 42 move upward, unlocking reel 2. The coil spring then releases its elastic potential energy, driving reel 2 to rotate and automatically retract cable 3 into automatic retraction box 1. Once cable 3 is fully retracted, press lever 41 again, locking reel 2 via locking device 4, restoring the ground wire to its stowed position for future use. During the entire working process, one end of the connecting rod 5 is connected to the cable 3 through a ball joint, which can adapt to the rotation of the cable 3 under various external forces and avoid damage to the connection due to torsion; the various components are closely matched, and the springs, pins, buckles and other structures are used to achieve convenience of operation, stability of clamping and high efficiency of cable management, meeting the needs of copper busbar grounding in different scenarios.

[0040] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An improved grounding wire for a copper busbar, comprising an automatic wire take-up box (1), characterized in that: A reel (2) is installed in the automatic wire-winding box (1), a cable (3) is wound on the reel (2), one end of the cable (3) extends out of the automatic wire-winding box (1) and is installed with a connecting rod (5), a locking device (4) is installed on the automatic wire-winding box (1), a clamping structure (8) is installed at the end of the connecting rod (5), an operating handle (6) is installed on one side of the connecting rod (5), and a locking structure (7) is installed on the operating handle (6).

2. The improved copper busbar grounding wire according to claim 1, characterized in that: The middle portion of the reel (2) is rotatably connected to the inner wall of the automatic take-up box (1) via a pin, and a coil spring is installed at the pin.

3. The improved copper busbar grounding wire according to claim 1, characterized in that: The locking device (4) comprises a pressure rod (41), the bottom end of which is provided with an arc-shaped pressure plate (42), a locking rod (45) being provided on one side of the pressure rod (41), a locking block (46) being provided on one side of the locking rod (45), and two upper and lower locking openings (411) being provided on one side of the pressure rod (41) near the locking block (46). When the pressure rod (41) is pressed manually, the pressure rod (41) is pushed downward, so that the end of the locking block (46) is engaged in the upper locking opening (411), and the pressure rod (41) is locked at this time, and the pressure plate (42) at the bottom locks the reel (2).

4. The improved copper busbar grounding wire according to claim 3, characterized in that: A tensioning spring (44) is installed between the upper part of the pressure plate (42) and the inner wall of the automatic winding box (1), and a movable column (47) is installed on the other side of the locking rod (45). The outer end of the movable column (47) is provided with a fixed sleeve (48), and the fixed sleeve (48) is fixed on the inner wall of the automatic winding box (1). A tightening spring is installed inside the fixed sleeve (48), which drives the locking block (46) on the movable column (47) to be clamped into the locking port (411). When the locking rod (45) is manually pushed to overcome the action of the tightening spring and move in the reverse direction, the locking block (46) is disengaged from the locking port (411), and then the pressure rod (41) is moved upward by the action of the tensioning spring (44), so that the pressure plate (42) unlocks the reel (2).

5. The improved copper busbar grounding wire according to claim 1, characterized in that: The chuck structure (8) comprises a movable chuck (81) and a fixed chuck (82); the movable chuck (81) and the operating handle (6) are integrally connected; the connection between the movable chuck (81) and the operating handle (6) is rotatably connected to the connecting rod (5) via a pin shaft; the ends of the movable chuck (81) and the fixed chuck (82) are provided with an arc-shaped clamping opening (83), and the inner wall of the clamping opening (83) is provided with a plurality of saw teeth (831).

6. The improved copper busbar grounding wire according to claim 5, characterized in that: One end of the connecting rod (5) is rotatably connected to one end of the cable (3) via a ball joint. The interior of the connecting rod (5) is a hollow structure. An arc-shaped guide groove (51) is installed inside the connecting rod (5). A clamping spring (52) is installed in the guide groove (51). An arc-shaped guide rod (61) is installed on one side of the operating handle (6). One end of the guide rod (61) is slidably engaged with the guide groove (51). The clamping spring (52) drives the guide rod (61) to move, thereby opening the operating handle (6) and driving the movable clamp (81) and the fixed clamp (82) to close, thereby clamping the external copper busbar.

7. The improved copper busbar grounding wire according to claim 6, characterized in that: The locking structure (7) includes a block (71) mounted on the end of the operating handle (6) and a limit plate (73) mounted inside the connecting rod (5), a protrusion (72) being mounted on one side of the block (71), a bayonet being provided on the connecting rod (5), and one end of the limit plate (73) being connected to the inner wall of the connecting rod (5) via a locking spring (75). When the operating handle (6) is manually gripped, the block (71) can be snapped into the bayonet, driving the protrusion (72) to snap into the inner side of the limit plate (73), and the limit plate (73) is horizontally retracted and ejected by the locking spring (75), so as to facilitate the snapping of the protrusion (72) into the inner side of the limit plate (73).

8. The improved copper busbar grounding wire according to claim 7, characterized in that: An operating rod (74) capable of horizontal movement is installed on the upper portion of the limit plate (73). The operating rod (74) drives the limit plate (73) to retract through manual operation, so that the protrusion (72) is unlocked, and the operating handle (6) is reset, thereby achieving the clamping and locking of the copper busbar by the clamping structure (8).

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