Self-locking grounding device
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGXIA ELECTRIC POWER ENERGY TECH CO LTD
- Filing Date
- 2025-07-02
- Publication Date
- 2026-07-07
Smart Images
Figure CN224472851U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cable grounding technology, specifically to a self-locking grounding device. Background Technology
[0002] In the field of electricity, safety is a constant concern for power companies, electrical workers, and electricity users. For power companies and electrical workers, safety during power supply and equipment / line maintenance is always a top priority. During line maintenance and repair, power outages are generally required before high-altitude work can proceed. However, because some companies may generate their own power during power outages, it is necessary to ground the cables at the work area end and implement backflow prevention measures to avoid safety accidents.
[0003] However, existing grounding devices generally use hard contact to lock the cables, such as using screws to press the cables tightly. This lacks a certain degree of fault tolerance, which leads to a weakening of the locking effect after long-term use, and may even result in the inability to lock at all. Summary of the Invention
[0004] The technical problem to be solved by this utility model is to provide a self-locking grounding device, including a self-locking frame, a grounding component, and a self-locking assembly, wherein:
[0005] The self-locking frame includes a first housing, a second housing detachably mounted on the lower part of the first housing, an end cover hinged to the upper part of the second housing, a top cover hinged to the top of the first housing, and insulating shells vertically provided on both sides of the lower part of the first housing. An opening and closing cover is hinged to the lower end of one of the insulating shells. Cable outlets are provided on both sides of the self-locking frame.
[0006] The grounding assembly includes a conductor, which is installed inside a first housing. The conductor has a mounting cavity in the middle, and the lower part of the conductor is connected to the upper part of the grounding ring. The two sides of the grounding ring are located inside an insulating shell, and its lower part is located inside an opening and closing cover.
[0007] The self-locking assembly includes a locking bolt that passes through a through hole at the top of the first housing and is threadedly fitted to a conductor. A buffer plate is threadedly fitted to the lower part of the locking bolt, and a clamping member is movably fitted to its lower end. The buffer plate and the clamping member are located in the mounting cavity. An elastic member is provided between the clamping member and the buffer plate, and a cable locking cavity is formed between the clamping member and the conductor.
[0008] Preferably, the cable outlet is provided with an annular sealing ring, the first housing is provided with a first arc-shaped sealing ring on both sides, the second housing is provided with a second arc-shaped sealing ring on both sides, and the top cover is provided with a third arc-shaped sealing ring on both sides. The first arc-shaped sealing ring, the second arc-shaped sealing ring and the third arc-shaped sealing ring are spliced together to form an annular sealing ring.
[0009] Preferably, the insulating outer shell includes a first sub-shell and a second sub-shell. The first sub-shell is connected to the lower two sides of the first shell, and the second sub-shell is connected to the two sides of the second shell. The end face of the first sub-shell is provided with a plug-in flange, and the end face of the second sub-shell is provided with a plug-in groove. By detachably fitting the plug-in flange into the plug-in groove, the first sub-shell and the second sub-shell are fitted together to form a tubular shape with bent ends. The lower part of both the first sub-shell and the second sub-shell is provided with an opening and closing rotating seat. One end of the opening and closing rotating seat is provided with a pin, and a rotating cylinder is fitted on the pin. An opening and closing cover is connected to the rotating cylinder, and the opening and closing cover is provided with an opening and closing wall.
[0010] Preferably, the upper part of the second housing is provided with a first hinge protrusion, the lower part of the end cap is provided with a first hinge lug, the first hinge lug is provided with a hinge hole, and the first hinge lug is movably fitted onto the first hinge protrusion through the hinge hole.
[0011] Preferably, the upper two sides of the first housing are provided with a second hinge protrusion and a limiting protrusion, the top cover is provided with a second hinge lug, the second hinge lug is provided with a hinge hole, and the second hinge lug is movably mounted on the second hinge protrusion through the hinge hole.
[0012] Preferably, the upper part of the end cap is provided with a bayonet, and the inner side wall of the top cover is provided with a buckle, which can be fitted into the bayonet.
[0013] Preferably, the conductor includes a conductive body vertically disposed within the first housing. The upper end of the conductive body is provided with a fixing part, and the fixing part is provided with a threaded hole for mounting a locking bolt. The lower end of the conductive body is provided with a cable placement groove, and a cable locking cavity is formed between the cable placement groove and the clamping member above it. The lower part of the cable placement groove is provided with a conductive connection part, and the side of the conductive connection part is provided with a grounding connection groove. A grounding ring is mounted in the grounding connection groove. The inner bottom surface of the cable placement groove is provided with a concave arc-shaped conductive anti-slip tooth groove, and the bottom of the clamping member is provided with an upwardly concave arc-shaped insulating anti-slip tooth groove.
[0014] Preferably, pull rods are provided on both sides of the buffer plate, and hooks are provided at the lower ends of the pull rods. Protrusions are provided on both sides of the clamping member, and the protrusions can be detachably fitted with the hooks. The elastic element is a spring, and two elastic elements are provided, which are symmetrically arranged on both sides of the locking bolt.
[0015] Preferably, the lower end of the locking bolt is provided with a boss, and a semi-circular annular groove is provided at the connection between the boss and the locking bolt. The upper side of the clamping member is provided with a connecting hole groove, and a set of semi-circular slots are provided on the inner side wall of the connecting hole groove. The boss is movably fitted in the connecting hole groove, and a set of connecting pins is fitted in the cavity formed by the semi-circular annular groove and the semi-circular slots.
[0016] Preferably, it also includes a locking assembly, which includes a slide switch and a locking spring. The front end face of the fixing part is provided with a locking rail. The slide switch is movably mounted on the locking rail and is located in the lock hole at the end of the first housing. The upper side of the fixing part is provided with a locking hole groove, and both its upper and lower sides are provided with locking spring fixing grooves. The locking spring is located in the locking hole groove and is fitted in the thread groove of the locking bolt. One end of the locking spring is a movable locking end, which is connected to the slide switch. The other end of the locking spring is an annular fixing end, which is wrapped around the fixing part and its upper and lower sides are placed in the locking spring fixing groove. The locking spring fixing groove is fitted with a locking spring fixing pin.
[0017] The working principle of this utility model: This utility model's self-locking grounding device includes a self-locking frame, a grounding component, and a self-locking assembly. Wherein:
[0018] The self-locking frame consists of a first housing, a second housing, and end caps and a top cap hinged to both. The side of the self-locking frame is connected to an insulating shell, and the insulating shells are hinged to openable covers. The self-locking frame facilitates fixing the device to the cable to be repaired, making installation convenient and stable.
[0019] The insulating housing consists of a first sub-shell and a second sub-shell. This split design not only facilitates assembly and maintenance but also improves the housing's sealing and durability. The first sub-shell is integrally molded with the first shell of the self-locking frame, and the second sub-shell is integrally molded with the second shell of the self-locking frame. This tight fit enhances the overall structural stability of the device. The introduction of the end cap provides operators with a more flexible access method. The end cap is hinged to the top of the second sub-shell and located on the side of the first shell. This design allows operators to easily access key components such as cables and clamping parts within the mounting cavity by flipping open the end cap. This not only facilitates cable connection and locking operations but also aids in routine maintenance and inspection. Simultaneously, the flip-open design of the end cap enhances the device's safety and ease of operation. When operation of components within the mounting cavity is not required, the end cap can be tightly closed, forming a sealed protective space to prevent dust, moisture, and other impurities from entering and affecting the normal operation of the device. When operation is needed, operators simply flip open the end cap without requiring complex disassembly or relocation. It is important to note that the end cap has a latch, and the top cap has a latch that engages with the latch to lock the two caps together. This allows the top and end caps to lock together after being flipped closed. The latch and latch design is not only simple and practical but also highly reliable. When the operator flips the end cap to close, the latch automatically aligns with the latch on the top cap. With a gentle press, the latch smoothly engages with the latch, achieving the locking function. This operation method is not only convenient and efficient but also greatly reduces the risk of locking failure due to improper operation. Furthermore, the locking mechanism of the latch and latch enhances the safety and stability of the device. In electrical work, grounding devices need to withstand certain current and voltage surges. By ensuring a tight lock between the top and end caps, this design effectively prevents electrical faults or safety accidents caused by loosening or deformation. It is also worth mentioning that the latch and latch design takes into account the need for easy maintenance and replacement. When it is necessary to open the hinge for maintenance or replacement of parts, the operator only needs to simply release the latch from the latch. This design not only improves the ease of maintenance but also helps extend the lifespan of the device.
[0020] The grounding assembly includes a conductor installed in the first housing and a grounding ring installed in the insulating outer shell and the opening and closing cover. The lower part of the conductor is connected to the grounding ring. During maintenance, the cable to be grounded is first properly placed in the mounting cavity formed in the middle of the conductor. Then, the opening and closing cover is opened to expose the grounding ring. Conductive power is conducted by connecting the conductive rod to the grounding ring. After maintenance, the opening and closing cover is closed. The design of this structure makes conductive wiring convenient and safe.
[0021] The self-locking assembly includes a locking bolt and its lower buffer plate, clamping element, and elastic element. Rotating the locking bolt moves it downwards relative to the conductor, compressing the elastic element below it to create a locking effect. The elastic element deforms under pressure, transmitting the pressure to the clamping element, which, together with the conductor, compresses the cable locking cavity, locking the cable securely. First, the cable is locked by the elastic compression of the elastic element, allowing the cable to maintain a certain degree of elasticity after locking. Even after prolonged use, the locking effect remains stable due to the continuous action of the elastic element, avoiding the weakening or failure to lock that can occur with traditional hard-contact locking methods. Second, the introduction of the elastic element reduces direct wear on the cable and locking components caused by hard-contact locking, thereby extending the device's lifespan and reducing maintenance costs. Furthermore, the movable connection design between the locking element and the conductor makes locking and unlocking operations simple and quick, improving work efficiency. Finally, the stable locking effect ensures the safety of the grounding device in electrical operations, especially in situations requiring prevention of backflow, effectively avoiding safety accidents.
[0022] Furthermore, pull rods are added to both sides of the buffer plate, and corresponding protrusions are provided on both sides of the clamping component to cooperate with the pull rods. This design allows the clamping component to move upward simultaneously when the locking bolt moves upward, thus achieving a more convenient and efficient unlocking operation. Specifically, when unlocking is required, the operator can turn the locking bolt upward. During this process, the pull rods on both sides of the buffer plate will tightly engage with the protrusions on both sides of the clamping component through the pull hooks, forming a stable connection. As the locking bolt continues to move upward, the pull rods will drive the protrusions and the connected clamping component upward together. In this way, the locking space originally formed by the clamping component and the bottom surface of the mounting cavity will gradually open, and the cable can be easily released. This design not only simplifies the unlocking operation and improves work efficiency, but also ensures the stability and reliability of the unlocking process. In addition, due to the cooperation of the pull rods and protrusions, the clamping component can remain stable when moving upward, avoiding unnecessary damage to the cable or other components of the device due to shaking or tilting.
[0023] In addition, a locking mechanism is provided, utilizing a locking spring fitted into the threaded groove of the locking bolt. When the locking bolt rotates forward, it rotates downward; when the locking bolt rotates in the reverse direction, it rotates in the opposite direction to the locking spring, increasing the friction between the locking spring and the locking bolt, thereby preventing the locking bolt from rotating upward and loosening. When disassembling the device, it is necessary to rotate the locking bolt upward to adjust it. At this time, manually move the slide lock switch along the locking rail to release the locking spring and separate it from the locking bolt. Then, rotate the locking bolt upward in the reverse direction to adjust it, causing the clamping part to move upward, opening the cable locking cavity, and then removing the device from the cable.
[0024] The beneficial effects of this utility model are as follows: The self-locking grounding device provided by this utility model, through the design of a self-locking frame and self-locking components, achieves stable locking and safety protection of cables, improving the safety and service life of the device, while simplifying the operation process. By setting the grounding components, and using conductors and grounding rings to connect to the cables and conductive rods respectively, the connection is not only convenient but also safe and reliable. Furthermore, a locking component can be optionally set to prevent the locking from loosening, further improving installation stability. This device can be widely used in line inspection and maintenance work, especially in power operations where backflow prevention is required, effectively avoiding safety accidents and possessing significant technical advantages and application value. Attached Figure Description
[0025] Figure 1 This is a perspective view of the self-locking grounding device of this utility model;
[0026] Figure 2 This is a cross-sectional view of the self-locking grounding device of this utility model;
[0027] Figure 3 for Figure 2 A magnified view of a portion of the image;
[0028] Figure 4 This is a schematic diagram of the internal structure;
[0029] Figure 5 This is a schematic diagram of the self-locking frame.
[0030] Figure 6 This is a top view of the self-locking grounding device of this utility model;
[0031] Figure 7 This is a schematic diagram of the self-locking component.
[0032] Figure 8 This is a schematic diagram of the installation of the locking components;
[0033] Figure 9 This is a schematic diagram of the locking assembly.
[0034] In the picture:
[0035] Self-locking frame 1, first housing 11, through hole 11-1, second hinge protrusion 11-2, limiting protrusion 11-3, lock hole 11-4, second housing 12, first hinge protrusion 12-1, end cap 13, first hinge lug 13-1, bayonet 13-2, top cover 14, second hinge lug 14-1, buckle 14-2, insulating outer shell 15, first sub-housing shell 15-1, second sub-housing shell 15-2, insertion flange 15-3, opening and closing rotating seat 15-5, pin 15-6, rotating cylinder 15-7, opening and closing cover 16, annular sealing ring 17, first arc-shaped sealing ring 17-1, second arc-shaped sealing ring 17-2, third arc-shaped sealing ring 17-3, opening and closing wall 18;
[0036] Grounding component 2, conductor 21, conductive body 21-1, fixing part 21-2, cable placement groove 21-3, conductive connection part 21-4, grounding connection groove 21-5, conductive anti-slip tooth groove 21-6, locking rail 21-7, locking hole groove 21-8, locking spring fixing groove 21-9, mounting cavity 22, grounding ring 23;
[0037] Self-locking component 3, locking bolt 31, boss 31-1, semi-circular annular groove 31-2, buffer plate 32, clamping part 33, insulating anti-slip tooth groove 33-1, connecting hole groove 33-2, semi-circular slot 33-3, elastic part 34, cable locking cavity 35, pull rod 36, pull hook 37, protrusion 38, connecting pin 39;
[0038] Locking assembly 4, slide lock switch 41, lock spring 42, movable locking end 43, annular fixed end 44, lock spring fixing pin 45. Detailed Implementation
[0039] To make the technical solution of this utility model easier to understand, the technical solution of this utility model will now be clearly and completely described in conjunction with the accompanying drawings and specific embodiments.
[0040] Example 1:
[0041] like Figures 1 to 5 As shown, the self-locking grounding device of this embodiment includes a self-locking frame 1, a grounding component 2, and a self-locking component 3, wherein:
[0042] The self-locking frame 1 includes a first housing 11, a second housing 12 is detachably mounted on the lower part of the first housing 11, an end cover 13 is hinged to the upper part of the second housing 12, a top cover 14 is hinged to the top of the first housing 11, and an insulating shell 15 is vertically provided on both sides of the lower part of the first housing 11. An opening and closing cover 16 is hinged to the lower end of one of the insulating shells 15. Cable outlets are provided on both sides of the self-locking frame 1.
[0043] The grounding assembly 2 includes a conductor 21, which is fitted inside the first housing 11. The conductor 21 has a mounting cavity 22 in the middle. The lower part of the conductor 21 is connected to the upper part of the grounding ring 23. The two sides of the grounding ring 23 are located inside the insulating housing 15, and its lower part is located inside the opening and closing cover 16.
[0044] The self-locking assembly 3 includes a locking bolt 31, which passes through a through hole 11-1 at the top of the first housing 11 and is threadedly fitted to the conductor 21. A buffer plate 32 is threadedly fitted to the lower part of the locking bolt 31, and a clamping member 33 is movably fitted to its lower end. The buffer plate 32 and the clamping member 33 are located in the mounting cavity 22. An elastic member 34 is provided between the clamping member 33 and the buffer plate 32. A cable locking cavity 35 is formed between the clamping member 33 and the conductor 21.
[0045] Example 2:
[0046] like Figures 1 to 9 As shown, the self-locking grounding device of this embodiment includes a self-locking frame 1, a grounding component 2, a self-locking component 3, and a locking component 4, wherein:
[0047] The self-locking frame 1 includes a first housing 11, a second housing 12 detachably mounted on the lower part of the first housing 11, an end cap 13 hinged to the upper part of the second housing 12, a top cap 14 hinged to the top of the first housing 11, and insulating shells 15 vertically mounted on both sides of the lower part of the first housing 11. One of the insulating shells 15 has an opening and closing cover 16 hinged to its lower end. Cable outlets are provided on both sides of the self-locking frame 1. An annular sealing ring 17 is provided on the cable outlet. A first arc-shaped sealing ring 17-1 is provided on both sides of the first housing 11, a second arc-shaped sealing ring 17-2 is provided on both sides of the second housing 12, and a third arc-shaped sealing ring 17-3 is provided on both sides of the top cap 14. The first arc-shaped sealing ring 17-1, the second arc-shaped sealing ring 17-2, and the third arc-shaped sealing ring 17-3 are spliced together to form an annular sealing ring 17. The insulating outer shell 15 includes a first sub-shell 15-1 and a second sub-shell 15-2. The first sub-shell 15-1 is connected to the lower two sides of the first shell 11, and the second sub-shell 15-2 is connected to the two sides of the second shell 12. The end face of the first sub-shell 15-1 is provided with a plug-in flange 15-3, and the end face of the second sub-shell 15-2 is provided with a plug-in groove. By detachably fitting the plug-in flange 15-3 into the plug-in groove, the first sub-shell 15-1 and the second sub-shell 15-2 are fitted together to form a tubular shape with bent ends. The lower part of both the first sub-shell 15-1 and the second sub-shell 15-2 is provided with an opening and closing rotating seat 15-5. One end of the opening and closing rotating seat 15-5 is provided with a pin 15-6, and a rotating cylinder 15-7 is fitted on the pin 15-6. An opening and closing cover 16 is connected to the rotating cylinder 15-7. The opening and closing cover 16 is provided with an opening and closing wall 18. The upper part of the second housing 12 is provided with a first hinge protrusion 12-1, and the lower part of the end cover 13 is provided with a first hinge lug 13-1. The first hinge lug 13-1 has a hinge hole, and the first hinge lug 13-1 is movably fitted onto the first hinge protrusion 12-1 through the hinge hole. The upper sides of the first housing 11 are provided with second hinge protrusions 11-2 and limiting protrusions 11-3. The top cover 14 is provided with a second hinge lug 14-1, which has a hinge hole, and the second hinge lug 14-1 is movably fitted onto the second hinge protrusion 11-2 through the hinge hole. The upper part of the end cover 13 is provided with a bayonet 13-2, and the inner sidewall of the top cover 14 is provided with a buckle 14-2, which can be fitted into the bayonet 13-2.
[0048] The grounding assembly 2 includes a conductor 21, which is installed in the first housing 11. The conductor 21 has a mounting cavity 22 in the middle. The lower part of the conductor 21 is connected to the upper part of the grounding ring 23. The two sides of the grounding ring 23 are located in the insulating housing 15, and its lower part is located in the opening and closing cover 16. The conductor 21 includes a conductive body 21-1 vertically installed in the first housing 11. The upper end of the conductive body 21-1 is provided with a fixing part 21-2. The fixing part 21-2 is provided with a threaded hole for the locking bolt 31 to be fitted and connected. The lower end of the conductive body 21-1 is provided with a cable placement groove 21-3. The cable placement groove 21-3 and the clamping member 33 above it form a cable locking cavity 35. The lower part of the cable placement groove 21-3 is provided with a conductive connection part 21-4. The side of the conductive connection part 21-4 is provided with a grounding connection groove 21-5. The grounding ring 23 is installed in the grounding connection groove 21-5. The inner bottom surface of the cable placement groove 21-3 is provided with a concave arc-shaped conductive anti-slip tooth groove 21-6, and the bottom of the clamping member 33 is provided with an upward-concave arc-shaped insulating anti-slip tooth groove 33-1.
[0049] The self-locking assembly 3 includes a locking bolt 31, which passes through a through hole 11-1 at the top of the first housing 11 and is threadedly fitted to the conductor 21. A buffer plate 32 is threadedly fitted to the lower part of the locking bolt 31, and a clamping member 33 is movably fitted to its lower end. The buffer plate 32 and the clamping member 33 are located in the mounting cavity 22. An elastic member 34 is provided between the clamping member 33 and the buffer plate 32, and a cable locking cavity 35 is formed between the clamping member 33 and the conductor 21. Pull rods 36 are provided on both sides of the buffer plate 32, and hooks 37 are provided at the lower ends of the pull rods 36. Protrusions 38 are provided on both sides of the clamping member 33, and the protrusions 38 can be detachably fitted with the hooks 37. The elastic member 34 is a spring, and two elastic members 34 are provided, which are symmetrically arranged on both sides of the locking bolt 31. The lower end of the locking bolt 31 is provided with a boss 31-1, and a semi-circular annular groove 31-2 is provided at the connection between the boss 31-1 and the locking bolt 31. The upper side of the clamping member 33 is provided with a connecting hole groove 33-2, and a set of semi-circular retaining grooves 33-3 are provided on the inner side wall of the connecting hole groove 33-2. The boss 31-1 is movably fitted in the connecting hole groove 33-2, and a set of connecting pins 39 are fitted in the cavity formed by the semi-circular annular groove 31-2 and the semi-circular retaining grooves 33-3.
[0050] The locking assembly 4 includes a sliding lock switch 41 and a locking spring 42. The front end face of the fixing part 21-2 is provided with a locking rail 21-7. The sliding lock switch 41 is movably mounted on the locking rail 21-7 and is located in the lock hole 11-4 at the end of the first housing 11. The upper side of the fixing part 21-2 is provided with a locking hole groove 21-8, and both its upper and lower sides are provided with locking spring fixing grooves 21-9. The locking spring 42 is located in the locking hole groove 21-8 and is fitted in the thread groove of the locking bolt 31. One end of the locking spring 42 is a movable locking end 43, which is connected to the sliding lock switch 41. The other end of the locking spring 42 is an annular fixing end 44, which is wound around the fixing part 21-2 and its upper and lower sides are placed in the locking spring fixing grooves 21-9. The locking spring fixing grooves 21-9 are fitted with locking spring fixing pins 45.
[0051] How to use this utility model:
[0052] 1. During installation, first, properly place the cable to be grounded into the cable locking cavity 35 formed in the middle of the conductor 21. Rotate the locking bolt 31 downwards in the forward direction, causing it to move downwards relative to the conductor 21. This compresses the elastic element 34 located below it, creating a locking effect. The elastic element 34 deforms under pressure, transmitting the pressure to the clamping element 33, which, together with the conductor 21, presses the cable locking cavity 35 together, locking the cable. Then, manually move the slide lock switch 41 along the locking rail 21-7, allowing the locking spring 42 to engage with the threaded groove of the locking bolt 31, preventing the locking bolt 31 from loosening during use by rotating in the opposite direction. Finally, close the end cover 13 and the top cover 14, allowing the buckle 14-2 to engage in the bayonet 13-2.
[0053] 2. During maintenance, open the opening and closing cover 16 to expose the grounding ring 23. Use the conductive rod to connect to the grounding ring 23 for conduction. After maintenance, close the opening and closing cover 16.
[0054] 3. When disassembling, manually slide the slide lock switch 41 along the lock rail 21-7 to release the lock spring 42 and separate it from the locking bolt 31. Then, rotate the locking bolt 31 upwards in the opposite direction to make the clamping part 33 move upwards and open the cable locking cavity 35. Then, remove the device from the cable.
[0055] It should be noted that the embodiments described herein are only some embodiments of this utility model, and not all implementations of this utility model. These embodiments are merely illustrative and are intended only to provide a more intuitive and clear way of understanding the content of this utility model, not to limit the technical solutions described herein. All other implementation methods that can be conceived by those skilled in the art without creative effort, as well as other simple substitutions and variations of the technical solutions of this utility model, without departing from the concept of this utility model, are within the protection scope of this utility model.
Claims
1. A self-locking grounding device, characterized in that, It includes a self-locking frame (1), a grounding assembly (2), and a self-locking assembly (3), wherein: The self-locking frame (1) includes a first housing (11), a second housing (12) is detachably mounted on the lower part of the first housing (11), an end cover (13) is hinged to the upper part of the second housing (12), a top cover (14) is hinged to the top of the first housing (11), and an insulating shell (15) is vertically provided on both sides of the lower part of the first housing (11). An opening and closing cover (16) is hinged to the lower end of one of the insulating shells (15). Cable outlets are provided on both sides of the self-locking frame (1). The grounding assembly (2) includes a conductor (21), which is fitted inside the first housing (11). The conductor (21) has a mounting cavity (22) in the middle. The lower part of the conductor (21) is connected to the upper part of the grounding ring (23). The two sides of the grounding ring (23) are located inside the insulating shell (15), and its lower part is located inside the opening and closing cover (16). The self-locking assembly (3) includes a locking bolt (31), which passes through a through hole (11-1) at the top of the first housing (11) and is threadedly fitted to the conductor (21). A buffer plate (32) is threadedly fitted to the lower part of the locking bolt (31), and a clamping member (33) is movably fitted to its lower end. The buffer plate (32) and the clamping member (33) are located in the mounting cavity (22). An elastic member (34) is provided between the clamping member (33) and the buffer plate (32), and a cable locking cavity (35) is formed between the clamping member (33) and the conductor (21).
2. The self-locking grounding device as described in claim 1, characterized in that, The cable outlet is provided with an annular sealing ring (17), the first housing (11) is provided with a first arc-shaped sealing ring (17-1) on both sides, the second housing (12) is provided with a second arc-shaped sealing ring (17-2) on both sides, and the top cover (14) is provided with a third arc-shaped sealing ring (17-3) on both sides. The first arc-shaped sealing ring (17-1), the second arc-shaped sealing ring (17-2) and the third arc-shaped sealing ring (17-3) are spliced together to form an annular sealing ring (17).
3. The self-locking grounding device as described in claim 1, characterized in that, The insulating outer shell (15) includes a first sub-shell (15-1) and a second sub-shell (15-2). The first sub-shell (15-1) is connected to the lower two sides of the first shell (11), and the second sub-shell (15-2) is connected to the two sides of the second shell (12). The end face of the first sub-shell (15-1) is provided with a plug-in flange (15-3), and the end face of the second sub-shell (15-2) is provided with a plug-in groove. By detachably fitting the plug-in flange (15-3) into the plug-in groove, the... The first sub-shell (15-1) and the second sub-shell (15-2) are fitted together to form a tubular shape with bent ends. The lower part of the first sub-shell (15-1) and the second sub-shell (15-2) are provided with an opening and closing rotating seat (15-5). One end of the opening and closing rotating seat (15-5) is provided with a pin (15-6). A rotating cylinder (15-7) is fitted on the pin (15-6). An opening and closing cover (16) is connected to the rotating cylinder (15-7). An opening and closing wall (18) is provided on the opening and closing cover (16).
4. The self-locking grounding device as described in claim 1, characterized in that, The upper part of the second housing (12) is provided with a first hinge protrusion (12-1), and the lower part of the end cover (13) is provided with a first hinge lug (13-1). The first hinge lug (13-1) is provided with a hinge hole, and the first hinge lug (13-1) is movably mounted on the first hinge protrusion (12-1) through the hinge hole.
5. The self-locking grounding device as described in claim 1, characterized in that, The upper sides of the first housing (11) are provided with a second hinge protrusion (11-2) and a limiting protrusion (11-3). The top cover (14) is provided with a second hinge lug (14-1). The second hinge lug (14-1) is provided with a hinge hole. The second hinge lug (14-1) is movably mounted on the second hinge protrusion (11-2) through the hinge hole.
6. The self-locking grounding device as described in claim 1, characterized in that, The upper part of the end cap (13) is provided with a bayonet (13-2), and the inner side wall of the top cover (14) is provided with a buckle (14-2), which can be fitted into the bayonet (13-2).
7. The self-locking grounding device as described in claim 1, characterized in that, The conductor (21) includes a conductive body (21-1) vertically disposed within the first housing (11). The upper end of the conductive body (21-1) is provided with a fixing part (21-2), which has a threaded hole for a locking bolt (31) to be fitted and connected. The lower end of the conductive body (21-1) is provided with a cable placement groove (21-3), which forms a cable locking cavity (3) with the clamping member (33) above it. 5) The lower part of the cable placement groove (21-3) is provided with a conductive connection part (21-4), and the side of the conductive connection part (21-4) is provided with a grounding connection groove (21-5). The grounding ring (23) is fitted in the grounding connection groove (21-5). The inner bottom surface of the cable placement groove (21-3) is provided with a concave arc-shaped conductive anti-slip tooth groove (21-6), and the bottom of the clamping member (33) is provided with an upward concave arc-shaped insulating anti-slip tooth groove (33-1).
8. The self-locking grounding device as described in claim 1, characterized in that, The buffer plate (32) is provided with pull rods (36) on both sides, and the lower end of the pull rod (36) is provided with a hook (37). The clamping member (33) is provided with protrusions (38) on both sides. The protrusions (38) can be detachably fitted with the hooks (37). The elastic member (34) is a spring. There are two elastic members (34), and the two elastic members (34) are symmetrically arranged on both sides of the locking bolt (31).
9. The self-locking grounding device as described in claim 1, characterized in that, The lower end of the locking bolt (31) is provided with a boss (31-1), and a semi-circular annular groove (31-2) is provided at the connection between the boss (31-1) and the locking bolt (31). The upper side of the clamping member (33) is provided with a connecting hole groove (33-2), and a set of semi-circular retaining grooves (33-3) is provided on the inner side wall of the connecting hole groove (33-2). The boss (31-1) is movably fitted in the connecting hole groove (33-2), and a set of connecting pins (39) is fitted in the cavity formed by the semi-circular annular groove (31-2) and the semi-circular retaining groove (33-3).
10. The self-locking grounding device as described in claim 7, characterized in that, It also includes a locking assembly (4), which includes a sliding lock switch (41) and a locking spring (42). The front end face of the fixing part (21-2) is provided with a locking rail (21-7). The sliding lock switch (41) is movably mounted on the locking rail (21-7), and the sliding lock switch (41) is located in the lock hole (11-4) at the end of the first housing (11). The upper side of the fixing part (21-2) is provided with a locking groove (21-8), and both its upper and lower sides are provided with locking spring fixing grooves (21-9). 42) The locking spring (42) is located in the locking hole groove (21-8) and fitted in the thread groove of the locking bolt (31). One end of the locking spring (42) is a movable locking end (43), which is connected to the slide lock switch (41). The other end of the locking spring (42) is an annular fixed end (44), which is wrapped around the fixed part (21-2) and its upper and lower sides are placed in the locking spring fixing groove (21-9). The locking spring fixing pin (45) is fitted in the locking spring fixing groove (21-9).