Anti-loosening transformer substation lightning arrester grounding device

Abstract

The utility model relates to the technical field of lightning arresters, and discloses an anti-loosening transformer substation lightning arrester grounding device which comprises a shell, a drill bit and a locking mechanism, and the bottom of the shell is detachably connected with the drill bit. The locking mechanism is installed in the shell, the locking mechanism comprises a conical block, the conical block slides in the shell, two T-shaped sliding grooves are symmetrically formed in the conical block, a T-shaped sliding block is connected into each T-shaped sliding groove in a sliding mode, and ground inserts are symmetrically connected into the shell in a sliding mode. The ground plug can be controlled to be folded and unfolded, the ground plug extends out when fixing is needed, the ground plug is stored in the ground plug when dismounting is needed, the flexibility and practicability of equipment use are improved, meanwhile, an anti-falling mechanism arranged in the protective cap can fix a cable, the cable is prevented from directly acting on a wiring ring when the cable shakes due to external force, and the service life of the equipment is prolonged. The cable is prevented from loosening, and the use stability of the grounding device is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lightning arresters, in particular to a grounding device for a substation lightning arrester that prevents loosening. Background Technique

[0002] A lightning arrester is an electrical appliance used to protect electrical equipment from high transient overvoltages and limit the follow - current time and often the follow - current amplitude. It needs to be used in conjunction with a grounding device. For the current lightning arrester grounding device, a fixed metal rod is generally used, which is usually composed of a copper rod, an iron rod or an alloy rod, directly inserted into the ground, and its upper end is connected to the lightning arrester. Due to the lack of a fixing mechanism, it is easy to become loose.

[0003] After retrieval, the patent with the publication number CN113451797B discloses a lightning arrester grounding device with an anti - loosening structure, including a grounding pipe. A drill bit is fixedly installed at the bottom of the grounding pipe. A movable block is movably installed on the inner bottom wall of the grounding pipe. The top of the movable block is movably installed with an anti - loosening rod extending into the grounding pipe. A threaded ring is fixedly installed on the inner side of the grounding pipe above the anti - loosening rod. For this lightning arrester grounding device with an anti - loosening structure, when connecting a grounding wire, the clamping pin can be screwed so that the wiring sleeve can rotate relative to the connecting rod. Then, the grounding wire can be placed inside the wiring sleeve and located below the pressing plate. Then, by screwing the pushing pin, the pressing plate can be pushed to press the grounding wire, thus completing the connection. And when connecting, the grounding wire can rotate freely around the connecting rod, having the advantages of good anti - loosening effect, free rotation at the wiring part and providing multiple fixing methods.

[0004] Since the anti - loosening rod of the above - mentioned device does not have a retracting mechanism and cannot be actively retracted after it extends, when disassembling the grounding device, the device needs to be directly pulled out of the soil, which is easy to damage the anti - loosening rod. At the same time, it does not have a structure for fixing the cable. When the cable is subjected to external force, the force will be transmitted to the wiring part, resulting in loosening of the wiring part. Therefore, this application proposes a grounding device for a substation lightning arrester that prevents loosening. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a grounding device for a substation lightning arrester that prevents loosening. Through the cooperation of the locking mechanism and the adjusting mechanism, not only can the fixation of the grounding device be realized, but also the expansion and retraction of the ground plug can be controlled, which is convenient for loading and unloading. Under the action of the anti - detachment mechanism, the cable can be fixed, improving the stability of its connection with the wiring ring, and solving the problems mentioned in the background technique.

[0006] To solve the above problems, the utility model provides a technical solution:

[0007] An anti-loosening grounding device for a substation lightning arrester, comprising a housing and a drill bit. The bottom of the housing is detachably connected to the drill bit, and a locking mechanism is further included;

[0008] The locking mechanism is installed inside the housing. The locking mechanism includes a tapered block that slides inside the housing. Two T-shaped sliding grooves are symmetrically opened inside the tapered block. Each T-shaped sliding groove is slidably connected with a T-shaped slider. The housing is symmetrically slidably connected with ground plugs, and one end of the T-shaped slider is fixedly connected to the ground plug;

[0009] An adjusting mechanism for driving the locking mechanism to move is provided inside the housing;

[0010] A protective cap is detachably connected to the top of the housing, and an anti-disconnection mechanism for fixing the cable is provided inside the protective cap.

[0011] As a preferred solution of the present utility model, the adjusting mechanism includes a screw rod that rotates at the bottom of the inner wall of the housing. Both tapered blocks are threadedly connected to the screw rod. The top end of the screw rod is fixedly connected with a driven bevel gear. A rotating shaft is rotatably connected inside the housing. An active bevel gear is fixedly connected to the outside of the rotating shaft. The active bevel gear meshes with the driven bevel gear. One end of the rotating shaft is fixedly connected with an internal nut.

[0012] As a preferred solution of the present utility model, the anti-disconnection mechanism includes arc-shaped clamping plates. Two arc-shaped clamping plates are symmetrically arranged inside the protective cap. Two installation cavities are symmetrically opened inside the protective cap. A sliding rod is slidably connected inside the installation cavity. One end of the sliding rod is fixedly connected to the arc-shaped clamping plate. A sliding plate is sleeved on the outside of the sliding rod and located inside the installation cavity. A spring is sleeved on the outside of the sliding rod and between the sliding plate and the inner wall of the installation cavity.

[0013] As a preferred solution of the present utility model, a screw ring is fixedly connected to the top of the housing, and the protective cap is threadedly connected with the screw ring. The end of the sliding rod away from the arc-shaped clamping plate contacts the inner wall of the screw ring.

[0014] As a preferred solution of the present utility model, a wiring terminal is fixedly connected to the top of the housing and directly below the protective cap, and a wiring ring is fixedly connected to the top of the wiring terminal.

[0015] The beneficial effects of the present utility model are as follows: By driving the tapered block to move up and down through the adjusting mechanism, the expansion and contraction control of the ground plug can be realized. When fixing is required, the ground plug is extended, and when disassembling, the ground plug is retracted into the interior to improve the flexibility and practicality of equipment use. At the same time, the anti-disconnection mechanism provided inside the protective cap can fix the cable to prevent the force from directly acting on the wiring ring when the cable is shaken by an external force, avoiding the situation of cable disconnection and greatly improving the stability of the grounding device during use. Brief Description of the Drawings

[0016] For ease of description, the present utility model will be described in detail by the following specific embodiments and the accompanying drawings.

[0017] Figure 1 It is a schematic diagram of the retractable structure of the floor plug of the present utility model;

[0018] Figure 2 It is a schematic diagram of the expansion and retraction structure of the floor plug of the present utility model;

[0019] Figure 3 It is a schematic diagram of the locking mechanism of the present utility model;

[0020] Figure 4 It is the present utility model Figure 1 The enlarged view of part A in;

[0021] Figure 5 It is the present utility model Figure 2 The enlarged view of part B in.

[0022] In the figure: 1, housing; 2, drill bit; 3, terminal; 4, wiring ring; 5, locking mechanism; 51, tapered block; 52, T-shaped chute; 53, T-shaped slider; 54, floor plug; 6, adjusting mechanism; 61, screw; 62, driven bevel gear; 63, rotating shaft; 64, driving bevel gear; 65, internal nut; 7, spiral ring; 8, protective cap; 9, anti-disengagement mechanism; 91, installation cavity; 92, slide bar; 93, slide plate; 94, spring; 95, arc-shaped clamping plate. Detailed Description of the Embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Embodiment

[0024] Please refer to Figures 1-5 , the present utility model provides a technical solution: an anti-loosening grounding device for a substation lightning arrester, including a housing 1 and a drill bit 2. The bottom of the housing 1 is detachably connected to the drill bit 2 by means of threads. It is characterized in that it further includes a locking mechanism 5;

[0025] The locking mechanism 5 is installed inside the housing 1. The locking mechanism 5 includes a tapered block 51 which slides inside the housing 1. Two T-shaped chutes 52 are symmetrically arranged inside the tapered block 51. A T-shaped slider 53 is slidably connected inside each T-shaped chute 52. Ground plugs 54 are symmetrically and slidably connected inside the housing 1. One end of the T-shaped slider 53 is fixedly connected to the ground plug 54. By moving the tapered block 51 up and down, the T-shaped slider 53 inside it can be driven to slide. Since the tapered block 51 is of a tapered structure, when it moves up and down, it can cooperate with the T-shaped slider 53 to drive the ground plug 54 to move, realizing the retracting and extending functions, facilitating the fixation of the housing 1 and also facilitating subsequent disassembly;

[0026] An adjusting mechanism 6 for driving the locking mechanism 5 to move is provided inside the housing 1;

[0027] A protective cap 8 is detachably connected to the top of the housing 1. An anti-disconnection mechanism 9 for fixing the cable is provided inside the protective cap 8, which can fix the cable to prevent the cable from directly applying force on the terminal lug 4 when it is shaken by an external force, avoiding the situation of cable disconnection.

[0028] Furthermore, the adjusting mechanism 6 includes a screw rod 61 which rotates at the bottom of the inner wall of the housing 1. Both tapered blocks 51 are threadedly connected to the screw rod 61. A driven bevel gear 62 is fixedly connected to the top end of the screw rod 61. A rotating shaft 63 is rotatably connected inside the housing 1. A driving bevel gear 64 is fixedly connected to the outside of the rotating shaft 63. The driving bevel gear 64 meshes with the driven bevel gear 62. One end of the rotating shaft 63 is fixedly connected to an internal nut 65. By driving the rotating shaft 63 to rotate through the internal nut 65, the driving bevel gear 64 can cooperate with the driven bevel gear 62 to drive the screw rod 61 to rotate, thereby realizing the lifting control of the tapered block 51 and achieving the movement effect of the tapered block 51 driving the ground plug 54 to retract and extend.

[0029] Furthermore, the anti-disconnection mechanism 9 includes arc-shaped clamping plates 95. Two arc-shaped clamping plates 95 are symmetrically arranged inside the protective cap 8. Two installation cavities 91 are symmetrically opened inside the protective cap 8. A sliding rod 92 is slidably connected inside the installation cavity 91. One end of the sliding rod 92 is fixedly connected to the arc-shaped clamping plate 95. A sliding plate 93 is sleeved on the outside of the sliding rod 92 and inside the installation cavity 91. A spring 94 is sleeved between the outside of the sliding rod 92 and the inner wall of the installation cavity 91 between the sliding plate 93 and the inner wall of the installation cavity 91, which can automatically clamp and separate the cable with the installation and disassembly of the protective cap 8. It is not only simple to operate but also can improve the connection stability between the cable and the terminal lug 4.

[0030] Furthermore, a screw ring 7 is fixedly connected to the top of the housing 1. The protective cap 8 is threadedly connected with the screw ring 7. The end of the sliding rod 92 far from the arc-shaped clamping plate 95 contacts the inner wall of the screw ring 7. The screw ring 7 has open ends at both ends and a structure with an upper diameter larger than the lower diameter. Therefore, the sliding rod 92 can be driven to move when the protective cap 8 is assembled.

[0031] Furthermore, a terminal block 3 is fixedly connected to the top of the housing 1 and directly below the protective cap 8, and a connection ring 4 is fixedly connected to the top of the terminal block 3.

[0032] In summary: When using this device, first install the drill bit 2 at the bottom of the housing 1, then insert the drill bit 2 and the housing 1 into the soil. Use a tool to cooperate with the internal nut 65 to drive the rotation of the rotating shaft 63 and the driving bevel gear 64. When the driving bevel gear 64 rotates, it drives the driven bevel gear 62 and the screw 61 to rotate accordingly. At this time, the screw 61 drives the tapered block 51 to move upward inside the housing 1. When the tapered block 51 moves upward, the T-shaped slider 53 inside it slides inside the T-shaped chute 52. At this time, the ground plug 54 can be extruded towards the outside of the housing 1, and then the ground plug 54 is inserted into the soil outside the housing 1. Under the action of the ground plug 54, the housing 1 in the soil can be strengthened. Pass the cable through the inside of the protective cap 8 and connect it to the connection ring 4 above the terminal block 3. Then install the protective cap 8 on the screw ring 7. As the protective cap 8 moves downward in a threaded manner, the slide rod 92 inside it slides on the inclined inner wall of the screw ring 7 and pushes the arc-shaped clamping plate 95 to squeeze and fix the cable inside the protective cap 8, which can prevent external forces from being transmitted to the joint of the cable and the connection ring 4. When the slide rod 92 moves, it drives the slide plate 93 to squeeze the spring 94. When it is necessary to remove the grounding device, unscrew the protective cap 8 from the screw ring 7. During this process, the slide rod 92 drives the arc-shaped clamping plate 95 to separate from the cable under the thrust of the spring 94 and the slide plate 93. Then separate the cable from the connection ring 4. Rotate the rotating shaft 63 in the reverse direction. At this time, under the action of the adjustment mechanism 6, the tapered block 51 is driven to move downward, and then the ground plug 54 is retracted into the housing 1. Then the housing 1 can be pulled out of the soil.

[0033] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A loosening-proof grounding device for a substation lightning arrester, comprising a housing (1) and a drill bit (2). The bottom of the housing (1) is detachably connected to the drill bit (2), and is characterized in that, It also includes a locking mechanism (5); The locking mechanism (5) is installed inside the housing (1). The locking mechanism (5) includes a tapered block (51). The tapered block (51) slides inside the housing (1). Two T-shaped chutes (52) are symmetrically opened inside the tapered block (51). A T-shaped slider (53) is slidably connected inside each T-shaped chute (52). Ground plugs (54) are symmetrically slidably connected inside the housing (1). One end of the T-shaped slider (53) is fixedly connected to the ground plug (54); An adjusting mechanism (6) for driving the locking mechanism (5) to move is provided inside the housing (1); A protective cap (8) is detachably connected to the top of the housing (1). An anti-detachment mechanism (9) for fixing the cable is provided inside the protective cap (8).

2. The anti-loosening grounding device for a substation lightning arrester according to claim 1, characterized in that, The adjusting mechanism (6) includes a screw rod (61). The screw rod (61) rotates at the bottom of the inner wall of the housing (1). Both tapered blocks (51) are threadedly connected to the screw rod (61). The top end of the screw rod (61) is fixedly connected to a driven bevel gear (62). A rotating shaft (63) is rotatably connected inside the housing (1). A driving bevel gear (64) is fixedly connected to the outside of the rotating shaft (63). The driving bevel gear (64) meshes with the driven bevel gear (62). One end of the rotating shaft (63) is fixedly connected to an internal nut (65).

3. The anti-loosening grounding device for a substation lightning arrester according to claim 1, wherein The anti-detachment mechanism (9) includes arc-shaped clamping plates (95). Two arc-shaped clamping plates (95) are symmetrically arranged inside the protective cap (8). Two installation cavities (91) are symmetrically opened inside the protective cap (8). A slide rod (92) is slidably connected inside the installation cavity (91). One end of the slide rod (92) is fixedly connected to the arc-shaped clamping plate (95). A slide plate (93) is sleeved on the outside of the slide rod (92) and inside the installation cavity (91). A spring (94) is sleeved on the outside of the slide rod (92) between the slide plate (93) and the inner wall of the installation cavity (91).

4. The anti-loosening grounding device for a substation lightning arrester according to claim 3, characterized in that A screw ring (7) is fixedly connected to the top of the housing (1). The protective cap (8) is threadedly connected with the screw ring (7). The end of the slide rod (92) away from the arc-shaped clamping plate (95) contacts the inner wall of the screw ring (7).

5. The anti-loosening grounding device for a substation lightning arrester according to claim 1, characterized in that, A terminal block (3) is fixedly connected to the top of the housing (1) and directly below the protective cap (8). A connection ring (4) is fixedly connected to the top of the terminal block (3).

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