Grounding protection device for power distribution network

Abstract

The utility model provides a ground protection device for an electric power distribution network, which relates to the field of ground protection devices and comprises a support frame, a conducting ring and a ground pole fixed in the middle of the conducting ring, the conducting ring is fixedly mounted on the support frame, and a metal frame is arranged at the top of the conducting ring. The metal frame is respectively provided with a fixing roller for placing a wire and a clamp, one end of the wire is wound on the outer surface of the fixing roller, a metal sheet is fixed at the end part of the wire, the metal sheet is fixed through the clamp, and the wire is connected with a grounding pole through the metal sheet, the clamp and the metal frame. The metal sheet is fixed on the metal frame through the clamp, current is conducted through the metal frame and the grounding column, one end of the wire is wound on the outer surface of the fixed roller, the wire is not prone to disengagement, and the grounding protection effect is prevented from being affected by swinging of the grounding column and the metal sheet.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of grounding protection device, especially to a power distribution network grounding protection device. BACKGROUND

[0002] The distribution network refers to the power network that accepts electric energy from the power transmission network or the regional power plant, distributes locally or step by step according to the voltage to various users through the distribution facilities, is composed of overhead lines, cables, towers, distribution transformers, disconnectors, reactive compensators and some auxiliary facilities, and plays an important role in the distribution of electric energy in the power network. The distribution network will be configured with a corresponding grounding protection device. The grounding protection device is a general term for the grounding electrode buried underground and the connecting wire between the grounding electrode and the equipment.

[0003] The existing publication No. CN209766663U discloses a power distribution network grounding protection device, which comprises a laying plate and a grounding electrode. The bottom of the laying plate is bolted with a partition guard plate. The bottom of the laying plate and the inside of the partition guard plate are provided with a grounding electrode. The grounding electrode and the laying plate are in a vertical structure. The outer wall of the laying plate is provided with a junction box. The outer wall of the junction box is connected with a terminal. The grounding protection device is provided with a wire straightening pipe, which can straighten the grounding wire connected with the terminal, keep the grounding wire in a relatively smooth state, and cooperate with the scraping plate to scrape and clean the outer surface of the grounding wire, improve the surface cleanliness of the grounding wire.

[0004] However, it is found that the above-mentioned device lacks stability after installation, is easy to loosen, and the terminal is easy to shake, which can cause the wire to disconnect, affecting the grounding protection effect.

[0005] Therefore, it is necessary to provide a new power distribution network grounding protection device to solve the above technical problems. UTILITY MODEL CONTENTS

[0006] To solve the above technical problems, the utility model provides a power distribution network grounding protection device.

[0007] The power distribution network grounding protection device provided by the utility model comprises a supporting frame, a conductive ring and a grounding column fixed in the middle of the conductive ring. The conductive ring is fixedly installed on the supporting frame. The top of the conductive ring is provided with a metal frame. The metal frame is respectively provided with a fixed roller and a clamp for placing a wire. One end of the wire is wound around the outer surface of the fixed roller and the end thereof is fixed with a metal sheet. The metal sheet is fixed through the clamp.

[0008] Further, one end of the fixed roller is provided with a ratchet wheel, the outer side wall of the metal frame is rotationally provided with a supporting rod, one end of the supporting rod is fixedly provided with a pawl, and one end of the pawl is engaged with the ratchet wheel.

[0009] Further, the clamp comprises a fixed plate, a threaded adjusting rod and a clamping plate, the fixed plate is fixedly installed on the inner side wall of the metal frame, the threaded adjusting rod is threadedly connected with the metal frame, one end of the threaded adjusting rod is fixedly connected with one side of the clamping plate, and the clamping plate is located in position corresponding to the fixed plate.

[0010] Further, the edges of the supporting frame are equidistantly provided with a plurality of supporting arms, a ground insertion threaded rod is threadedly connected with each of the supporting arms, the ground insertion threaded rod is threadedly connected with the supporting arm, and the bottom of the ground insertion threaded rod is in a conical shape.

[0011] Further, the outer surface of the supporting rod is further provided with a torsion spring, and two ends of the torsion spring are fixedly connected with the inner side wall of the pawl and the outer side wall of the metal frame respectively.

[0012] Further, the top of the ground insertion threaded rod is provided with a rotating disc.

[0013] Compared with the related art, the power distribution network grounding protection device has the following advantages

[0014] Beneficial effects:

[0015] The metal sheet is fixed by the clamp, the wire is connected with the grounding column through the metal sheet, the clamp and the metal frame, the metal sheet is fixed on the metal frame by the clamp, and the metal frame conducts current with the grounding column, and one end of the wire is wound on the outer surface of the fixed roller, so that the wire is not easy to be separated, and the swing of the grounding column and the metal sheet does not affect the grounding protection effect. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The overall structure of the power distribution network grounding protection device provided by the utility model is shown in Figure 1 ;

[0017] Figure 2 The overall structure of the power distribution network grounding protection device provided by the utility model is shown in Figure 2 ;

[0018] Figure 3 The Figure 2 enlarged structure of A shown in the figure is shown in

[0019] Figure 4 The overall structure of the power distribution network grounding protection device provided by the utility model is shown in Figure 3 .

[0020] The figure mark: 1, support frame; 2, conductive ring; 3, grounding column; 4, metal frame; 5, fixed roller; 6, wire; 7, metal sheet; 8, ratchet wheel; 9, support rod; 10, pawl; 11, fixed plate; 12, threaded adjusting rod; 13, clamping plate; 14, support arm; 15, ground insertion threaded rod; 16, rotating disc. DETAILED DESCRIPTION

[0021] The utility model will be further explained in connection with the drawings and implementation.

[0022] Please combine with Figure 1 , Figure 2 , Figure 3 And Figure 4 Among them, Figure 1 It is the overall structure schematic of the power distribution network grounding protection device provided by the utility model Figure 1 ; Figure 2 It is the overall structure schematic of the power distribution network grounding protection device provided by the utility model Figure 2 ; Figure 3 It is the enlarged structure schematic of A shown in Figure 2 ; Figure 4 It is the overall structure schematic of the power distribution network grounding protection device provided by the utility model Figure 3 .

[0023] In the specific implementation process, as Figure 1 Shown, the power distribution network grounding protection device includes support frame 1, conductive ring 2 and the grounding column 3 fixed in the middle part of conductive ring 2, and the conductive ring 2 is fixedly installed on the support frame 1, and the top of the conductive ring 2 is provided with a metal frame 4, and the metal frame 4 is respectively provided with a fixed roller 5 for placing a wire 6 and a clamp, one end of the wire 6 is wound on the outer surface of the fixed roller 5 and the end portion is fixed with a metal sheet 7, the metal sheet 7 is fixed by the clamp, the wire 6 is connected with the grounding column 3 through the metal sheet 7, the clamp, the metal frame 4, the metal sheet 7 is fixed on the metal frame 4 by the clamp, and the metal frame 4 and the grounding column 3 conduct current, one end of the wire 6 is wound on the outer surface of the fixed roller 5, to avoid the swing of the grounding column 3 and the metal sheet 7.

[0024] Referring to Figure 2-3 Shown, one end of the fixed roller 5 is provided with a ratchet wheel 8, a support rod 9 is rotatably installed on the outer side wall of the metal frame 4, one end of the support rod 9 is fixed with a pawl 10, one end of the pawl 10 is engaged with the ratchet wheel 8, when the fixed roller 5 rotates forward, the ratchet wheel 8 rotates with it, and the pawl 10 will be opened under the push of the ratchet wheel 8, when the fixed roller 5 reversely rotates, the ratchet wheel 8 cannot rotate under the resistance of the pawl 10, at this time, the fixed roller 5 cannot rotate, realizing the one-way motion limitation of the fixed roller 5, to avoid the loosening of the wire 6 affecting the grounding effect;

[0025] It should be noted that the outer surface of the support rod 9 is also provided with a torsion spring, the two ends of the torsion spring are respectively fixedly connected with the inner side wall of the pawl 10 and the outer side wall of the metal frame 4, when the pawl 10 is pushed open by the ratchet wheel 8, the pawl 10 can be reset through the torsion spring.

[0026] Reference Figure 4 As shown in the figure, the clamp includes a fixed plate 11, a threaded adjusting rod 12 and a clamping plate 13, the fixed plate 11 is fixedly installed on the inner side wall of the metal frame 4, the threaded adjusting rod 12 is threadedly connected with the metal frame 4, and one end of the threaded adjusting rod 12 is fixedly connected with one side of the clamping plate 13, the clamping plate 13 corresponds in position to the fixed plate 11;

[0027] The clamping plate 13 is moved to the fixed plate 11 by screwing the threaded adjusting rod 12, and the metal plate is fixed and clamped by the cooperation of the clamping plate 13 and the fixed plate 11, so that the end of the wire 6 is prevented from loosening.

[0028] The edge of the support frame 1 is equidistantly provided with a plurality of support arms 14, a plurality of ground insertion threaded rods 15 are respectively threadedly connected on the plurality of support arms 14, the ground insertion threaded rod 15 is threadedly connected with the support arm 14, and the bottom of the ground insertion threaded rod 15 is in a tapered shape, and the top of the ground insertion threaded rod 15 is provided with a rotating disc 16, the plurality of ground insertion threaded rods 15 are inserted into the ground, and the stability of the support frame 1 is improved.

[0029] The working principle of the utility model is as follows: when the device is used, the plurality of ground insertion threaded rods 15 are inserted into the ground, one end of the wire 6 is wound on the outer surface of the fixed roller 5, the clamping plate 13 is moved to the fixed plate 11 by screwing the threaded adjusting rod 12, and the metal plate at the end of the wire 6 is fixed and clamped by the cooperation of the clamping plate 13 and the fixed plate 11, so that the end of the wire 6 is prevented from loosening, the wire 6 is connected with the grounding column 3 through the metal sheet 7, the clamp, the metal frame 4, the metal sheet 7 is fixed on the metal frame 4 through the clamp, and the current is conducted through the metal frame 4 and the grounding column 3, when the fixed roller 5 rotates forward, the ratchet wheel 8 rotates, and the pawl 10 is pushed open by the ratchet wheel 8, when the fixed roller 5 reversely rotates, the ratchet wheel 8 cannot rotate due to the resistance of the pawl 10, at this time, the fixed roller 5 cannot rotate, the one-way movement of the fixed roller 5 is limited, and the loosening of the wire 6 is avoided to affect the grounding effect.

[0030] The circuit and the control involved in the utility model are prior art, and too much repetition is not performed here.

[0031] The above only describes the embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process transformation using the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection range of the utility model.

Claims

1. An electrical power distribution network earth protection device, characterised in that, The utility model provides a support frame (1), conductive ring (2) and fixed ground column (3) in the middle part of conductive ring (2), conductive ring (2) is fixedly installed on support frame (1), the top of conductive ring (2) is equipped with metal frame (4), metal frame (4) is equipped with fixed roll (5) and clamp respectively for placing wire (6) on, one end of wire (6) is wound on the outer surface of fixed roll (5) and its end is fixed with metal sheet (7), metal sheet (7) is fixed through clamp.

2. The electrical power distribution network grounding protection apparatus of claim 1, wherein, One end of fixed roll (5) is equipped with ratchet wheel (8), the outer side wall of metal frame (4) is rotatably installed with support rod (9), and one end of support rod (9) is fixed with ratchet pawl (10), one end of ratchet pawl (10) is engaged with ratchet wheel (8).

3. The ground protection device for power distribution networks according to claim 1, characterized in that, The clamp includes fixed plate (11), threaded adjusting rod (12) and clamping plate (13), the fixed plate (11) is fixedly installed on the inner side wall of metal frame (4), the threaded adjusting rod (12) is threadedly connected with the metal frame (4), and one end of the threaded adjusting rod (12) is fixedly connected with one side of the clamping plate (13), and the clamping plate (13) corresponds in position to the fixed plate (11).

4. The ground protection device for power distribution networks according to claim 1, characterized in that, The edges of the support frame (1) are equidistantly provided with a plurality of support arms (14), a plurality of ground insertion threaded rods (15) are threadedly connected to the support arms (14) respectively, the ground insertion threaded rods (15) are threadedly connected with the support arms (14), and the bottoms of the ground insertion threaded rods (15) are conical.

5. The ground protection device for power distribution networks according to claim 2, characterized in that, The outer surface of the support rod (9) is also provided with a torsion spring, and the two ends of the torsion spring are fixedly connected with the inner side wall of the ratchet pawl (10) and the outer side wall of the metal frame (4) respectively.

6. The ground protection device for power distribution networks according to claim 4, characterized in that, The top of the ground insertion threaded rod (15) is provided with a rotating disc (16).

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