Ground wire reel

Abstract

The utility model relates to the technical field of grounding, in particular to a grounding wire reel which comprises a support, a grounding wire and an automatic take-up mechanism, a grounding connecting mechanism is arranged on the support and comprises a fixing shaft, a carbon brush component and a connecting flat belt, the fixing shaft is arranged on the support, the carbon brush component is arranged on the outer wall of the fixing shaft, one end of the fixing shaft is provided with the connecting flat belt, and the other end of the fixing shaft is provided with the automatic take-up mechanism. The carbon brush component comprises a carbon brush holder, carbon brushes and a torsion spring, the carbon brushes are distributed on the circumference of the outer wall of the fixing shaft, the carbon brush holder is arranged on the fixing shaft in a sleeving mode and connected with the fixing shaft in a relative rotating mode, and carbon brush grooves are formed in the carbon brush holder at intervals. The carbon brush is limited by the torsion spring, the carbon brush is exposed out of the carbon brush groove and abuts against the fixing shaft, a wire of the carbon brush is connected with a grounding wire, and the automatic take-up mechanism comprises a connecting plate, a clockwork spring and a supporting rod.

Description

Technical Field

[0001] The utility model relates to the technical field of grounding, in particular to a grounding wire reel. Background Art

[0002] Live working refers to a method of carrying out maintenance and testing on high-voltage electrical equipment without power outage. Electrical equipment needs to be tested, inspected and maintained frequently during long-term operation. Live working requires a grounding device to prevent the current from being conducted to the ground when leakage occurs, to prevent the operator from being electrocuted, and to protect the life safety of the operator. After searching, Chinese patent CN219919239U discloses an electrostatic grounding device, including a static electricity removal main body connected to a grounding wire and a first cable provided with a clamp, and also includes a box, an elastic joint fixedly connected to the inner wall of the box, and an automatic wire-winding mechanism rotatably connected to the inner wall of the box and wound with the first cable. The static electricity removal main body is installed on the inner top of the box, one end of the elastic joint is in close contact with the automatic wire-winding mechanism, and the elastic joint is provided with a second cable at both ends respectively connected to the static electricity removal main body and the automatic wire-winding mechanism. The shortcomings of the above patents: the above patents have many components, including not only a grounding wire, a first cable and a second cable, and the line connection is complicated, the use cost is high, and the operation is inconvenient. Summary of the invention

[0003] The utility model aims to solve the deficiencies in the prior art and to provide a grounding wire reel with a simple structure, few lines, quick and convenient connection and low use cost.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A grounding wire reel comprises a bracket, a grounding wire and an automatic wire-winding mechanism, characterized in that: the bracket is provided with a grounding connection mechanism, the grounding connection mechanism comprises a fixed shaft, a carbon brush component, and a connecting flat belt, the bracket is provided with a fixed shaft, the fixed shaft is fixedly installed on the bracket, the outer wall of the fixed shaft is provided with a carbon brush component, one end of the fixed shaft is provided with a connecting flat belt, the fixed shaft and the connecting flat belt are both conductive, one end of the connecting flat belt is fixedly connected to the fixed shaft, and the other end is placed outside the bracket to form a device connection end, the carbon brush component comprises a carbon brush holder, ... Brush and torsion spring, carbon brushes are distributed on the circumference of the outer wall of the fixed shaft, the carbon brush holder is sleeved on the fixed shaft and connected to the fixed shaft for relative rotation, carbon brush grooves are arranged at intervals on the carbon brush holder, and a torsion spring is arranged on the carbon brush holder, the carbon brush is placed in the carbon brush groove, the carbon brush is exposed from the carbon brush groove and contacts the fixed shaft, the wire of the carbon brush is connected to the ground wire, one end of the torsion spring is fixedly connected to the carbon brush holder, and the other end contacts the carbon brush to achieve good conductivity through the rotation of the carbon brush and the fixed shaft, the carbon brush is connected to the ground wire, and the fixed shaft is connected to an external device through a connecting flat belt, with fewer lines and convenient and fast connection.

[0006] A conducting plate is fixedly arranged on the carbon brush holder of the utility model. The material of the conducting plate is red copper. An access end and an outlet end are arranged on the conducting plate. The wire of the carbon brush is fixedly connected with the access end of the conducting plate, and the outlet end of the conducting plate is fixedly connected with the grounding wire, so that by arranging the conducting plate, it is convenient to connect all the carbon brushes to the conducting plate and then connect the conducting plate to the grounding wire.

[0007] The automatic wire rewinding mechanism of the utility model comprises a connecting plate, a hairspring and a supporting rod. Two connecting plates are arranged at intervals on the fixed shaft. A hairspring is arranged on the fixed shaft. The connecting plate is fixedly connected with the fixed shaft through a bearing. A supporting rod is arranged between the two connecting plates. The supporting rod is distributed circumferentially with the fixed shaft as the center. Both ends of the supporting rod are fixedly connected with the connecting plates on both sides. The grounding wire is wound on the supporting rod. One end of the grounding wire is connected with the carbon brush, and the other end passes through the bracket to form a grounding end. The carbon brush holder is fixedly connected with the connecting plate. One end of the hairspring is fixedly connected with the fixed shaft, and the other end is fixedly connected with the connecting plate, so that when the grounding wire is pulled out, the grounding wire drives the supporting rod, the connecting plate and the hairspring to rotate, so that the hairspring stores energy. When the grounding wire is released, under the elastic force of the hairspring, the supporting rod rotates reversely to retract the grounding wire.

[0008] A spring cover is arranged on one side of the connecting plate of the utility model. The spring cover covers the outside of the hairspring. The spring cover and the connecting plate form a spring box. One end of the hairspring is fixedly connected with the fixed shaft, and the other end is fixedly connected with the spring cover, so as to support and limit the hairspring through the spring box.

[0009] A grounding wire limiting and rewinding mechanism is arranged on the bracket of the utility model. The grounding wire limiting and rewinding mechanism comprises a ratchet wheel, a pawl and a driving knob. A ratchet wheel is arranged outside the fixed shaft. The ratchet wheel is fixedly connected with the connecting plate. A pawl is arranged on one side of the ratchet wheel. The pawl is in cooperation with and abuts against the ratchet wheel. The pawl is fixedly connected with the bracket through a pawl shaft and a bearing. One end of the pawl shaft passes through the bracket and is provided with a driving knob. The driving knob is fixedly connected with the pawl shaft. A tension spring is arranged on the bracket. One end of the tension spring is hinged with the bracket, and the other end is hinged with the pawl, so as to ensure the close cooperation between the pawl and the ratchet wheel through the tension spring, and prevent the grounding wire from automatically rewinding after being pulled out through the ratchet wheel and the pawl.

[0010] The material of the fixed shaft of the utility model is copper material. The connecting flat belt is a copper braid belt. Wiring ends are fixed at both ends of the connecting flat belt, and the conductivity is good.

[0011] On the surface of the ratchet wheel of the present utility model, steering grooves are arranged at intervals, and teeth are fixedly arranged between adjacent steering grooves. The teeth of the ratchet wheel cooperate with the ratchet pawl. The distance from the steering groove to the axis of the ratchet wheel is less than the distance from the teeth to the axis of the ratchet wheel. When the ratchet wheel drives the rotation through the connecting plate, when the steering groove of the ratchet wheel cooperates with the ratchet pawl, the ratchet wheel is not controlled by the ratchet pawl, and the ratchet wheel can rotate reversely under the action of the spring, so that the grounding wire can be reversely recovered by a certain length within the width range of the steering groove.

[0012] On the bracket of the present utility model, there is an outlet for the grounding wire. A limiting ball is arranged through the outlet of the grounding wire. The limiting ball is fixedly connected with the grounding wire. The outer diameter of the limiting ball is greater than the width of the outlet of the grounding wire, so that the outer end of the grounding wire is always located outside the bracket through the limiting ball, which is convenient for pulling out and retracting the grounding wire.

[0013] The bracket of the present utility model is provided with mounting holes, which is convenient for the installation and positioning of the bracket.

[0014] Due to the adoption of the above structure, the present utility model has the advantages of simple structure, few circuits, fast and convenient connection, and low use cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural view of the present utility model.

[0016] Figure 2 is the present utility model Figure 1 A - A cross-sectional view in the present utility model.

[0017] Figure 3 is the present utility model Figure 1 B - B cross-sectional view in the present utility model.

[0018] Figure 4 is the present utility model Figure 1 C - C cross-sectional view in the present utility model.

[0019] Reference numerals: bracket 1, grounding wire 2, automatic wire retracting mechanism 3, grounding connection mechanism 4, fixed shaft 5, carbon brush component 6, connecting flat belt 7, carbon brush holder 8, carbon brush 9, torsion spring 10, connecting plate 11, clockwork spring 12, support rod 13, spring cover 14, spring box 15, grounding wire limiting and retracting mechanism 16, ratchet wheel 17, ratchet pawl 18, driving knob 19, tension spring 20, steering groove 21, limiting ball 22, conduction plate 23. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following will further describe in detail the specific embodiments of the present utility model with reference to the accompanying drawings.

[0021] A grounding wire reel, comprising a bracket 1, a grounding wire 2 and an automatic wire rewinding mechanism 3, characterized in that: a grounding connection mechanism 4 is provided on the bracket 1, and the grounding connection mechanism 4 includes a fixed shaft 5, a carbon brush component 6, and a connecting flat belt 7. A fixed shaft 5 is provided on the bracket 1, and the fixed shaft 5 is fixedly installed on the bracket 1. A carbon brush component 6 is provided on the outer wall of the fixed shaft 5. A connecting flat belt 7 is provided at one end of the fixed shaft 5. Both the fixed shaft 5 and the connecting flat belt 7 are electrically conductive. One end of the connecting flat belt 7 is fixedly connected to the fixed shaft 5, and the other end is placed outside the bracket 1 to form a device connection end. The carbon brush component 6 includes a carbon brush holder 8, a carbon brush 9, and a torsion spring 10. The carbon brushes 9 are circumferentially distributed on the outer wall of the fixed shaft 5. The carbon brush holder 8 is sleeved on the fixed shaft 5 and is rotatably connected to the fixed shaft 5. Carbon brush grooves are provided at intervals on the carbon brush holder 8. A torsion spring 10 is provided on the carbon brush holder 8. The carbon brush 9 is placed in the carbon brush groove, and the carbon brush 9 protrudes from the carbon brush groove and abuts against the fixed shaft 5. The wire of the carbon brush 9 is connected to the grounding wire 2. One end of the torsion spring 10 is fixedly connected to the carbon brush holder 8, and the other end abuts against the carbon brush 9 to achieve good electrical conductivity through the rotation of the carbon brush and the fixed shaft. The carbon brush is connected to the grounding wire, and the fixed shaft is externally connected to a device through the connecting flat belt, with fewer lines, convenient and fast connection.

[0022] In the utility model, a conduction plate 23 is fixedly provided on the carbon brush holder 8. The material of the conduction plate 23 is copper. An access end and an outlet end are provided on the conduction plate 23. The wire of the carbon brush 9 is fixedly connected to the access end of the conduction plate 23, and the outlet end of the conduction plate 23 is fixedly connected to the grounding wire 2, so as to facilitate the connection of all carbon brushes to the conduction plate through the setting of the conduction plate and then connect to the grounding wire from the conduction plate.

[0023] The automatic wire rewinding mechanism 3 of the utility model includes a connecting plate 11, a hairspring 12, and a support rod 13. Two connecting plates 11 are provided at intervals on the fixed shaft 5. A hairspring 12 is provided on the fixed shaft 5. The connecting plate 11 is fixedly connected to the fixed shaft 5 through a bearing. A support rod 13 is provided between the two connecting plates 11. The support rod 13 is circumferentially distributed with the fixed shaft 5 as the center. Both ends of the support rod 13 are fixedly connected to the connecting plates 11 on both sides. The grounding wire 2 is wound around the support rod 13. One end of the grounding wire 2 is connected to the carbon brush 9, and the other end passes through the bracket 1 to form a grounding end. The carbon brush holder 8 is fixedly connected to the connecting plate 11. One end of the hairspring 12 is fixedly connected to the fixed shaft 5, and the other end is fixedly connected to the connecting plate 11. When the grounding wire is pulled out, the grounding wire drives the support rod, the connecting plate, and the hairspring to rotate, so that the hairspring stores energy. When the grounding wire is released, under the action of the elastic force of the hairspring, the support rod rotates in the reverse direction to retract the grounding wire.

[0024] On one side of the connecting plate 11 of the present utility model, there is a spring cover 14. The spring cover 14 covers the outside of the clockwork spring 12. The spring cover 14 and the connecting plate 11 form a spring box 15. The clockwork spring 12 is placed inside the spring box 15. One end of the clockwork spring 12 is fixedly connected to the fixed shaft 5, and the other end is fixedly connected to the spring cover 14, so as to support and limit the clockwork spring through the spring box.

[0025] On the bracket 1 of the present utility model, there is a ground wire limit retraction mechanism 16. The ground wire limit retraction mechanism 16 includes a ratchet wheel 17, a pawl 18, and a driving knob 19. The ratchet wheel 17 is arranged outside the fixed shaft 5. The ratchet wheel 17 is fixedly connected to the connecting plate 11. On one side of the ratchet wheel 17, there is a pawl 18. The pawl 18 is in cooperation and abutment with the ratchet wheel 17. The pawl 18 is fixedly connected to the bracket 1 through a pawl shaft and a bearing. One end of the pawl shaft passes through the bracket 1 and is provided with a driving knob 19. The driving knob 19 is fixedly connected to the pawl shaft. A tension spring 20 is arranged on the bracket 1. One end of the tension spring 20 is hinged to the bracket 1, and the other end is hinged to the pawl 18, so as to ensure the close cooperation between the pawl and the ratchet wheel through the tension spring, and prevent the ground wire from automatically retracting after being pulled out through the ratchet wheel and the pawl.

[0026] On the surface of the ratchet wheel 17 of the present utility model, there are turning grooves 21 arranged at intervals. Teeth are fixedly arranged between adjacent turning grooves 21. The teeth of the ratchet wheel 17 cooperate with the pawl 18. The distance from the turning groove 21 to the axis of the ratchet wheel 17 is less than the distance from the teeth to the axis of the ratchet wheel 17. When the ratchet wheel drives the rotation through the connecting plate, when the turning groove of the ratchet wheel cooperates with the pawl, the ratchet wheel is not controlled by the pawl, and the ratchet wheel can rotate reversely under the action of the spring, so that the ground wire can be reversely retracted by a certain length within the width range of the turning groove.

[0027] On the bracket 1 of the present utility model, there is a ground wire outlet. A limit ball 22 is arranged on the ground wire 2 passing through the ground wire outlet. The limit ball 22 is fixedly connected to the ground wire 2. The outer diameter of the limit ball 22 is greater than the width of the ground wire outlet, so that the outer end of the ground wire is always located outside the bracket through the limit ball 22, which is convenient for pulling out the ground wire.

[0028] On the bracket 1 of the present utility model, there are mounting holes, which are convenient for the installation and positioning of the bracket.

[0029] As shown in the appendix Figures 1-4 In the present utility model, the material of the fixed shaft 5 is copper material, and the connecting flat belt 7 is a copper braid belt, which is woven by copper wires. Wiring terminals are fixed at both ends. One end is fixedly connected to the fixed shaft 5, and the other end is connected to an external device.

[0030] During use, manually pull out the grounding wire 2, and the clockwork spring 12 will be tightened accordingly. Ground the grounding wire 2, and then connect the connecting flat belt 7 to the device that needs grounding protection. The current of the device flows into the ground through the connecting flat belt 7, the fixed shaft 5, the carbon brush 9, and the grounding wire 2;

[0031] After use, separate the connecting flat belt 7 from the external device, and separate the grounding wire 2 from the ground. Manually rotate the driving knob 19 to separate the pawl 18 from the ratchet wheel 17. The grounding wire 2 automatically retracts under the elastic force of the clockwork spring 12. Release the driving knob 19, and the pawl 18 automatically returns to its original position under the action of the tension spring 20; The structure of the utility model is ingenious and easy to operate. The fixed shaft 5 is a copper shaft, and the carbon brush 9 rotates around the fixed shaft 5 and abuts against the fixed shaft 5. The fixed shaft 5 and the carbon brush 9 are equivalent to the relative movement of the stator and the rotor, with good electrical conductivity, ensuring good electrical conductivity. In the utility model, only the grounding wire 2 and the connecting flat belt 7 are provided. The grounding wire 2 is connected to the carbon brush 9, and the connecting flat belt 7 is connected to the fixed shaft 5. The circuit is less, and the connection is fast and convenient. The utility model also provides an automatic wire winding mechanism 3, which can realize the automatic wire winding of the grounding wire 2, saving time and effort. In addition, the utility model also provides a grounding wire limit retracting mechanism 16, which realizes the locking of the grounding wire 2 through the cooperation of the ratchet wheel 17 and the pawl 18, and is safe and convenient to use.

[0032] Due to the adoption of the above structure, the utility model has the advantages of simple structure, few circuits, fast connection, convenience, and low use cost.

Claims

1. A grounding wire reel, comprising a bracket (1), a grounding wire (2) and an automatic wire-reeling mechanism (3), characterized in that: The bracket (1) is provided with a grounding connection mechanism (4), the grounding connection mechanism (4) comprising a fixed shaft (5), a carbon brush component (6), and a connecting flat belt (7). The bracket (1) is provided with a fixed shaft (5), the fixed shaft (5) is fixedly mounted on the bracket (1), the outer wall of the fixed shaft (5) is provided with a carbon brush component (6), one end of the fixed shaft (5) is provided with a connecting flat belt (7), the fixed shaft (5) and the connecting flat belt (7) are both conductive, one end of the connecting flat belt (7) is fixedly connected to the fixed shaft (5), and the other end is placed outside the bracket (1) to form a device connection end, the carbon brush component (6) is provided on the outer wall of the fixed shaft (5), and the connecting flat belt (7) is provided with a connecting flat belt (7). The brush component (6) comprises a carbon brush holder (8), a carbon brush (9), and a torsion spring (10). The carbon brushes (9) are distributed on the circumference of the outer wall of the fixed shaft (5). The carbon brush holder (8) is sleeved on the fixed shaft (5) and is connected to the fixed shaft (5) for relative rotation. The carbon brush holder (8) is provided with carbon brush grooves at intervals. The carbon brush holder (8) is provided with a torsion spring (10). The carbon brush (9) is placed in the carbon brush groove. The carbon brush (9) is exposed from the carbon brush groove and contacts the fixed shaft (5). The lead wire of the carbon brush (9) is connected to the ground wire (2). One end of the torsion spring (10) is fixedly connected to the carbon brush holder (8), and the other end contacts the carbon brush (9).

2. A grounding wire reel according to claim 1, characterized in that: A conductive plate (23) is fixedly provided on the carbon brush holder (8), and an input end and an output end are provided on the conductive plate (23); the conductive wire of the carbon brush (9) is fixedly connected to the input end of the conductive plate (23), and the output end of the conductive plate (23) is fixedly connected to the ground wire (2).

3. A grounding wire reel according to claim 2, characterized in that: A conduction plate (23) is fixedly provided on the carbon brush holder (8), and the conduction plate (23) is made of red copper.

4. A grounding wire reel according to claim 1, 2 or 3, characterized in that: The automatic wire-winding mechanism (3) comprises a connecting plate (11), a spring spring (12), and a support rod (13). Two connecting plates (11) are arranged on the fixed shaft (5) at intervals. The fixed shaft (5) is provided with a spring spring (12). The connecting plate (11) is fixedly connected to the fixed shaft (5) via a bearing. A support rod (13) is arranged between the two connecting plates (11). The support rod (13) is distributed in a circle with the fixed shaft (5) as the center. Both ends of the support rod (13) are fixedly connected to the connecting plates (11) on both sides. The grounding wire (2) is wound around the support rod (13). One end of the grounding wire (2) is connected to the carbon brush (9), and the other end passes through the bracket (1) to form a grounding end. The carbon brush holder (8) is fixedly connected to the connecting plate (11). One end of the spring spring (12) is fixedly connected to the fixed shaft (5), and the other end is fixedly connected to the connecting plate (11).

5. A grounding wire reel according to claim 4, characterized in that: A spring cover (14) is provided on one side of the connecting plate (11), the spring cover (14) covers the outside of the spring (12), the spring cover (14) and the connecting plate (11) form a spring box (15), the spring (12) is placed in the spring box (15), one end of the spring (12) is fixedly connected to the fixed shaft (5), and the other end is fixedly connected to the spring cover (14).

6. The grounding wire reel according to claim 4, characterized in that: The bracket (1) is provided with a grounding wire limit retraction mechanism (16), the grounding wire limit retraction mechanism (16) comprising a ratchet (17), a pawl (18), and a driving knob (19); the fixed shaft (5) is provided with an external ratchet (17), the ratchet (17) is fixedly connected to the connecting plate (11); a pawl (18) is provided on one side of the ratchet (17), the pawl (18) and the ratchet (17) cooperate and abut against each other; the pawl (18) is fixedly connected to the bracket (1) via a pawl shaft and a bearing; one end of the pawl shaft passes through the bracket (1) and is provided with a driving knob (19); the driving knob (19) is fixedly connected to the pawl shaft; a tension spring (20) is provided on the bracket (1), one end of the tension spring (20) is hinged to the bracket (1), and the other end is hinged to the pawl (18).

7. A grounding wire reel according to claim 1 or 2 or 3 or 5 or 6, characterized in that: The fixed shaft (5) is made of copper material, the connecting flat belt (7) is a copper braided belt, and wiring terminals are fixed at both ends of the connecting flat belt (7).

8. The grounding wire reel according to claim 6, characterized in that: The surface of the ratchet wheel (17) is provided with steering grooves (21) at intervals, teeth are fixedly provided between adjacent steering grooves (21), the teeth of the ratchet wheel (17) cooperate with the pawl (18), and the distance from the steering groove (21) to the axis of the ratchet wheel (17) is smaller than the distance from the teeth to the axis of the ratchet wheel (17).

9. A grounding wire reel according to claim 1 or 2 or 3 or 5 or 6 or 8, characterized in that: The bracket (1) is provided with a grounding wire outlet, the grounding wire (2) passing through the grounding wire outlet is provided with a limiting ball (22), the limiting ball (22) is fixedly connected to the grounding wire (2), and the outer diameter of the limiting ball (22) is greater than the width of the grounding wire outlet.

10. A grounding wire reel according to claim 1 or 2 or 3 or 5 or 6 or 8, characterized in that: The bracket (1) is provided with a mounting hole.

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