Anti-falling grounding wire connecting device

Abstract

The utility model relates to the field of anti -drop, disclose a kind of anti -drop ground wire connecting device, including anti -drop mechanism, and anti -drop mechanism is fixed in the outer wall of safety loop line;Anti -drop mechanism includes bottom ring, moving plate, pivot, top ring and fixed assembly;The lower end of moving plate is rotatably connected to bottom ring by pivot;Top ring is sleeved in safety loop line and is located above moving plate, and the lower end surface of top ring cooperates with the upper end inner wall of moving plate;Fixed assembly is fixed in the outer wall of safety loop line, and its bottom surface is in abutment with the top surface of top ring.When installation, press down top ring to force moving plate to rotate outward around pivot and open to form blocking structure, and fixed assembly limits the axial position of top ring by clamping safety loop line, to maintain the open state of moving plate.The utility model solves the problem that ground wire is easy to drop from mounting hole after joint failure, when joint drops, the open moving plate can be clamped in the inner wall of mounting hole to form secondary mechanical blocking, and the anti -drop is reliable.

Description

Technical Field

[0001] This utility model relates to the field of anti-detachment, and in particular to a grounding wire connection device for preventing detachment. Background Technology

[0002] Grounding wires, also known as safety return lines, are critical components in electrical engineering to ensure the safety of personnel and equipment. In large electrical equipment, distribution boxes, or cabinets, grounding wires need to pass through the mounting holes of the enclosure and have their ends (such as grounding terminals or lugs) reliably secured to the grounding busbar or equipment housing to ensure an effective electrical connection.

[0003] However, during long-term operation of the equipment, the grounding wire connector at the mounting hole will face a variety of risks. For example, continuous vibration generated by the equipment operation, corrosion of the connector due to the humid installation environment, loosening due to insufficient torque during installation, or careless external pulling during maintenance may all cause the connection between the grounding wire connector and the grounding busbar (or equipment casing) to fail or become accidentally loose.

[0004] In existing technologies, the grounding wire is secured almost entirely by the end connector. Once the connector becomes loose or falls off, the entire safety return line, lacking secondary fixing or blocking structures, can easily slip completely out of the mounting holes in the equipment box and fall off under the weight of the cable itself or residual tension.

[0005] This detachment not only causes the equipment's grounding protection to completely fail, but also creates a safety hazard that is extremely difficult to detect. If the equipment continues to operate without grounding protection, a leakage current will pose a serious threat to the lives of the operators. Therefore, this invention proposes a grounding wire connection device to prevent detachment and address the shortcomings of existing technologies. Utility Model Content

[0006] To overcome the above deficiencies, this utility model provides a grounding wire connection device to prevent grounding wire from falling off. This device aims to improve the problem that some existing grounding wire connection devices, when the safety return line end connector becomes loose or fails, the entire cable lacks a secondary fixing structure and can easily slide completely out of the equipment box mounting hole, leading to the failure of grounding protection.

[0007] This utility model provides a grounding wire connection device to prevent grounding wire from falling off, which is adapted to a safety return line. The end of the safety return line is provided with a connector. The device includes: an anti-dislodgement mechanism. The anti-detachment mechanism includes a bottom ring, a moving plate, a rotating shaft, a top ring, and a fixing assembly. The anti-detachment mechanism is sleeved and fixed to the outer wall of the safety return line and is located on the rear side of the connector. The bottom ring has a central through hole for threading a safety return line; The lower end of the motion plate is rotatably connected to the outer periphery of the upper surface of the bottom ring via a rotating shaft. There are multiple motion plates, which are arranged in a ring array on the upper surface of the bottom ring. The top ring is sleeved on the safety loop line and can slide along the axial direction of the safety loop line above the moving plate. The lower end face of the top ring is engaged with the upper inner wall of the moving plate. The top ring presses the moving plate downward to make it rotate outward around the axis and open. The opened moving plate forms a blocking structure larger than the outer diameter of the bottom ring. Furthermore, the fixing component is fixed to the outer wall of the safety return path, and the bottom surface of the fixing component abuts against the top surface of the top ring. This is used to axially limit the top ring after the moving plate opens, so as to maintain the opening state of the moving plate.

[0008] Preferably, the moving plates are plate-shaped pieces with the same structure, and the rotating shafts hinge the moving plates to the outer periphery of the upper surface of the bottom ring at even intervals. This evenly distributed structure makes the moving plates more evenly stressed when they open, and the resulting blocking structure is more stable and reliable.

[0009] Preferably, the lower end face of the top ring and the upper inner wall of the moving plate are a conical mating structure. The conical mating structure utilizes the principle of inclined plane force component, which can efficiently and stably convert the axial thrust applied by the top ring into a thrust that forces the moving plate to open radially when the top ring is pressed down.

[0010] Preferably, the fixing assembly includes a half ring, a moving shaft, and a bolt. The half ring is used to surround the safety loop line, the moving shaft is used to rotatably connect one end of the half ring, and the bolt is used to pass through the corresponding hole at the other end of the half ring and fasten and lock the half ring. This hinged and bolt-locked structure facilitates quick and reliable installation and fixing at any position on the safety loop line.

[0011] In a further preferred embodiment, when the bolt is tightened, the semi-ring generates a strong clamping force through radial contraction, thereby achieving frictional fixation on the outer wall of the safety return line. This frictional fixation ensures that the anti-detachment mechanism will not slide along the safety return line when subjected to the impact and tension of cable detachment, thus guaranteeing the effectiveness of the anti-detachment function.

[0012] Preferably, both the top ring and the bottom ring are provided with a central through hole, the diameter of which is larger than the outer diameter of the safety return line. This ensures that the anti-detachment mechanism can pass smoothly through the safety return line during installation, and the top ring can slide on the outer wall of the safety return line to press the moving plate.

[0013] Preferably, the outward rotation of the motion plate is achieved by the preset weak connection point of the motion plate breaking under the pressure of the top ring and rotating along the axis. This design makes the opening activation of the motion plate an irreversible process. Once installed in place, the motion plate will be permanently kept in the opening pre-blocking state.

[0014] Preferably, after the motion plate opens, the maximum radial dimension formed by the anti-detachment mechanism is greater than the diameter of the mounting hole of the equipment box in which the device is installed. This is the structural basis for realizing the physical blocking function, ensuring that the opened motion plate can reliably be locked on the inner wall edge of the mounting hole, thereby effectively preventing the cable from slipping out.

[0015] This utility model has the following beneficial effects: 1. This utility model solves the safety hazard problem in the prior art where the entire cable can easily slip out of the equipment box mounting hole after the safety circuit wire joint becomes loose or fails by setting an anti-detachment mechanism consisting of a moving plate, a top ring, a bottom ring, and a fixing component. It achieves the technical effect that when the joint fails, the opened moving plate can reliably be stuck in the inner wall of the equipment box mounting hole to form a two-stage mechanical barrier, effectively preventing the grounding wire from falling off.

[0016] 2. This utility model solves the problem in the prior art that the anti-detachment device is not firmly fixed to the cable and is prone to slippage and failure when pulled by setting a fixing component, which includes two half rings connected by a motion shaft and a bolt for locking. It achieves the technical effect of locking the half rings with bolts so that the fixing component can be firmly clamped to the outer wall of the safety return line, ensuring that the anti-detachment mechanism does not shift when subjected to cable tension, and the anti-detachment performance is stable and reliable.

[0017] 3. This utility model solves the problems of inconvenient unfolding or complex activation process of the anti-detachment structure in the prior art by designing the matching structure between the top ring, the moving plate and the bottom ring, and using the rotating shaft to realize the rotational connection of the moving plate. It achieves the technical effect of forcing the moving plate to rotate outward stably around the rotating shaft by pressing down the top ring, which is simple to activate, reliable in structure and easy to install and deploy. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of a grounding wire connection device for preventing detachment proposed in this utility model; Figure 2 This is a schematic diagram of the anti-detachment mechanism of the grounding wire connection device proposed in this utility model. Figure 3 This is a structural exploded view of the anti-detachment mechanism of the grounding wire connection device proposed in this utility model.

[0019] Legend: 1. Safe return route; 2. Anti-detachment mechanism; 21. Bottom ring; 22. Moving plate; 23. Rotating shaft; 24. Top ring; 25. Fixed component; 251. Semi-ring; 252. Motion shaft; 253. Bolt; 3. Connector. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example: Reference Figures 1 to 3 This utility model provides a grounding wire connection device to prevent detachment, which aims to solve the problem in the prior art that the entire safety return line 1 is prone to slipping out of the equipment box mounting hole after the connector 3 of the safety return line 1 becomes loose or fails.

[0022] like Figure 1 As shown, the anti-detachment grounding wire connection device is adapted to the safety return line 1. The end of the safety return line 1 is provided with a connector 3. The device includes an anti-detachment mechanism 2, which is sleeved and fixed to the outer wall of the safety return line 1 and located behind the connector 3. The anti-detachment mechanism 2 includes a bottom ring 21, a moving plate 22, a rotating shaft 23, a top ring 24, and a fixing assembly 25. The bottom ring 21 has a central through hole for the safety return line 1 to pass through. The lower end of the moving plate 22 is rotatably connected to the outer periphery of the upper surface of the bottom ring 21 through the rotating shaft 23. There are multiple moving plates 22, which are arranged in a ring array on the upper surface of the bottom ring 21. The top ring 24 is sleeved... Located on the safety return path 1 and slidably above the motion plate 22 along the axial direction of the safety return path 1, the lower end face of the top ring 24 engages with the upper inner wall of the motion plate 22. The top ring 24 presses the motion plate 22 downward to make it rotate outward around the pivot 23 and open. After opening, the motion plate 22 forms a blocking structure larger than the outer diameter of the bottom ring 21. The fixing component 25 is fixed to the outer wall of the safety return path 1. The bottom surface of the fixing component 25 abuts against the top surface of the top ring 24. The fixing component 25 is used to axially limit the top ring 24 after the motion plate 22 is opened, so as to maintain the open state of the motion plate 22.

[0023] Reference Figure 2 and Figure 3 The fixing component 25 is fixed to the outer wall of the safety return path 1. The bottom surface of the fixing component 25 abuts against the top surface of the top ring 24. It is used to axially limit the top ring 24 after the moving plate 22 opens, so as to maintain the open state of the moving plate 22. The fixing assembly 25 includes two semi-rings 251, a motion shaft 252, and bolts 253. The two semi-rings 251 are used to surround the safety return line 1. One end of the two semi-rings 251 is rotatably connected to each other via the motion shaft 252. The bolts 253 are used to pass through corresponding holes at the other ends of the two semi-rings 251 and fasten and lock the two semi-rings 251. When the bolts 253 are tightened, the two semi-rings 251 achieve frictional fixation against the outer wall of the safety return line 1 through radial contraction. The top ring 24 is fitted onto the safety return path 1 and can slide axially along the safety return path 1 above the moving plate 22. The lower end face of the top ring 24 mates with the upper inner wall of the moving plate 22. The mating structure of the lower end face of the top ring 24 and the upper inner wall of the moving plate 22 is a tapered surface. The tapered surface mating structure is used to convert the axial thrust of the top ring 24 into the radial opening thrust of the moving plate 22. This mating structure ensures that when the top ring 24 moves downward, it can effectively compress the moving plate 22, causing it to rotate outward around the axis 23 and open. The moving plates 22 are four identical plate-shaped pieces. The rotating shaft 23 evenly and spacedly hinges the moving plates 22 to the outer periphery of the upper surface of the bottom ring 21. The outward rotation of the moving plates 22 is achieved by the pre-set weak connection point of the moving plates 22 breaking under the pressure of the top ring 24 and rotating along the rotating shaft 23. The opened moving plates 22 form a blocking structure larger than the outer diameter of the bottom ring 21. The blocking structure is used to get stuck on the inner wall of the equipment box mounting hole when the safety return line 1 falls off, thereby achieving anti-falling.

[0024] The moving plates 22 consist of four identical plate-shaped pieces. The rotating shaft 23 hinges the moving plates 22 evenly spaced to the outer periphery of the upper surface of the bottom ring 21. The lower end face of the top ring 24 and the upper inner wall of the moving plate 22 form a tapered mating structure. This tapered mating structure converts the axial thrust of the top ring 24 into the radial opening thrust of the moving plates 22. The fixing assembly 25 includes two semi-rings 251, a moving shaft 252, and bolts 253. The two semi-rings 251 surround the safety return path 1. The moving shaft 252 rotatably connects one end of each of the two semi-rings 251. The bolts 253 pass through the two semi-rings 251. The corresponding holes at the other end of ring 251 are fastened and locked to the two half-rings 251. When bolt 253 is tightened, the two half-rings 251 achieve frictional fixation on the outer wall of the safety return line 1 through radial contraction. Both the top ring 24 and the bottom ring 21 are provided with central through holes. The diameter of the central through holes is larger than the outer diameter of the safety return line 1. The outward rotation of the moving plate 22 is achieved by the preset weak connection point of the moving plate 22 breaking under the pressure of the top ring 24 and rotating along the rotating shaft 23. After the moving plate 22 is opened, the maximum radial dimension of the anti-detachment mechanism 2 is larger than the diameter of the mounting hole of the equipment box on which the device is installed.

[0025] The implementation principle of this application embodiment is as follows: During the installation process, the anti-detachment mechanism 2 is sleeved on the safety return line 1, the top ring 24 is pressed downward, and the cooperation structure between the lower end face of the top ring 24 and the tapered surface of the upper inner wall of the moving plate 22 interacts, converting the axial thrust into the radial opening thrust of the moving plate 22. The preset weak connection point of the moving plate 22 breaks under the pressure of the top ring 24 and rotates outward along the rotating shaft 23, forming a blocking structure larger than the outer diameter of the bottom ring 21.

[0026] After the motion plate 22 opens, the fixing component 25 is used for fixation. The two semi-rings 251 of the fixing component 25 rotate through the motion shaft 252 and surround the safety return line 1. Then the bolts 253 pass through the other end of the two semi-rings 251 and are tightened. The two semi-rings 251 achieve friction fixation against the outer wall of the safety return line 1 through radial contraction. At the same time, the bottom surface of the fixing component 25 abuts against the top surface of the top ring 24 to axially limit the top ring 24 and maintain the open state of the motion plate 22.

[0027] When the connector 3 of the safety return line 1 becomes loose or fails, causing the safety return line 1 to slide in the direction of detachment, the fixing component 25 has already frictionally fixed the entire anti-detachment mechanism 2 to the safety return line 1. The anti-detachment mechanism 2 moves in the same direction as the safety return line 1. At this time, the maximum radial dimension of the moving plate 22 in the open state is greater than the diameter of the mounting hole of the equipment box on which the device is installed. The moving plate 22 impacts and gets stuck on the inner wall edge of the mounting hole of the equipment box, thereby preventing the safety return line 1 from continuing to slide out and achieving the purpose of preventing detachment.

Claims

1. A grounding wire connection device for preventing detachment, comprising an adapter to a safety return line (1), wherein the end of the safety return line (1) is provided with a connector (3), characterized in that, The device includes: The anti-detachment mechanism (2) includes a bottom ring (21), a moving plate (22), a rotating shaft (23), a top ring (24), and a fixing component (25). The anti-detachment mechanism (2) is sleeved and fixed to the outer wall of the safety return line (1) and is located on the rear side of the connector (3). The bottom ring (21) has a central through hole for the safety return path (1) to pass through. The lower end of the moving plate (22) is rotatably connected to the outer periphery of the upper surface of the bottom ring (21) via the rotating shaft (23). There are multiple moving plates (22) arranged in a ring array on the upper surface of the bottom ring (21). The top ring (24) is sleeved on the safety return path (1) and can slide along the axial direction of the safety return path (1) above the moving plate (22). The lower end face of the top ring (24) is flush with the upper end face of the moving plate (22). The inner wall is matched, and the top ring (24) presses the moving plate (22) downward to make it rotate outward around the rotating shaft (23) and open. After opening, the moving plate (22) forms a blocking structure larger than the outer diameter of the bottom ring (21). The fixing component (25) is fixed to the outer wall of the safety return line (1). The bottom surface of the fixing component (25) abuts against the top surface of the top ring (24) and is used to axially limit the top ring (24) after the moving plate (22) is opened, so as to maintain the open state of the moving plate (22).

2. The anti-detachment grounding wire connection device according to claim 1, characterized in that, The motion plate (22) consists of four identical plate-shaped pieces, and the rotating shaft (23) hinges the motion plate (22) to the outer periphery of the upper surface of the bottom ring (21) at even intervals.

3. The anti-detachment grounding wire connection device according to claim 1, characterized in that, The lower end face of the top ring (24) and the upper inner wall of the moving plate (22) are a conical surface mating structure. The conical surface is used to convert the axial thrust of the top ring (24) into the radial opening thrust of the moving plate (22).

4. The anti-detachment grounding wire connection device according to claim 1, characterized in that, The fixing component (25) includes: Two semi-loops (251) are used to surround the safety return route (1); A motion shaft (252) is used to rotatably connect one end of the two semi-rings (251); Bolts (253) are used to pass through corresponding holes at the other ends of the two semi-rings (251) and to fasten and lock the two semi-rings (251).

5. The anti-detachment grounding wire connection device according to claim 4, characterized in that, After the bolt (253) is tightened, the two semi-rings (251) achieve frictional fixation on the outer wall of the safety return line (1) through radial contraction.

6. The anti-detachment grounding wire connection device according to claim 1, characterized in that, Both the top ring (24) and the bottom ring (21) are provided with a central through hole, and the diameter of the central through hole is larger than the outer diameter of the safety return line (1).

7. The anti-detachment grounding wire connection device according to claim 1, characterized in that, The outward rotation of the moving plate (22) is achieved by the pre-set weak connection point of the moving plate (22) breaking under the pressure of the top ring (24) and rotating along the rotating shaft (23).

8. The anti-detachment grounding wire connection device according to claim 1, characterized in that, After the motion plate (22) is opened, the maximum radial dimension of the anti-detachment mechanism (2) is greater than the diameter of the mounting hole of the equipment box on which the device is installed.

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