Temporary grounding equipment

Abstract

The invention relates to the technical field of grounding equipment, and discloses temporary grounding equipment, which comprises a winding device, a first wire and a second wire, and is characterized in that the winding device comprises a first wire winding roller and a second wire winding roller which independently rotate or are static, and the first wire and the second wire are respectively wound on the first wire winding roller and the second wire winding roller; the first end of the first wire is electrically connected with the first end of the second wire, the second end of the first wire is grounded, and the second end of the second wire is connected with a to-be-grounded conductor. During practical application, an operator can place the winding device at a proper position according to the specific environment condition of a construction site; then, the second end of the first wire is pulled, released from the first take-up roller and connected to the ground; and then the second end of the second wire is pulled and released from the second take-up roller to be connected with the grounding point of the conductor to be grounded, the whole process is convenient and rapid and easy to operate, the wound grounding wire is convenient to store and transport, and the working efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of grounding equipment, and in particular to a temporary grounding equipment. Background Art

[0002] A ground wire, also known as a safety return wire, provides a reliable electrical path by connecting directly to the earth. This connection can be considered a "lifeline" because it can conduct dangerous current to the ground in the event of an electrical fault, ensuring the safety of personnel and equipment.

[0003] In the inspection and maintenance of various electrical equipment and some temporary power use scenarios, there are still many safety hazards even if the power is cut off: on the one hand, misoperation or induction electricity may cause sudden power supply; on the other hand, residual charge may still exist on the equipment after the power outage. Therefore, before starting the operation, the operator must first temporarily install the grounding wire to connect the ground with the ground wire of the high-voltage cable, and then carry out the operation to reduce the probability of electric shock accidents and ensure the overall safety of the construction site.

[0004] However, due to the lack of suitable storage means, it is inconvenient to store, transport and put away the grounding wires used for temporary grounding, resulting in low work efficiency. Summary of the invention

[0005] The invention provides a temporary grounding device, which solves the technical problem of low working efficiency caused by inconvenience in storing, transporting and retracting a grounding wire used for temporary grounding.

[0006] A temporary grounding device provided by the present invention comprises: a winding device, a first conductor and a second conductor;

[0007] The winding device comprises a first winding roller and a second winding roller which are independently rotatable or stationary;

[0008] The first conductive wire is wound on the first take-up roller, and the second conductive wire is wound on the second take-up roller;

[0009] The first end of the first wire is electrically connected to the first end of the second wire;

[0010] The second end of the first conductive wire is used for grounding, and the second end of the second conductive wire is used for connecting to a conductor to be grounded.

[0011] Optionally, an extending direction of the rotation axis of the first take-up roller is the same as an extending direction of the rotation axis of the second take-up roller.

[0012] Optionally, the winding device further comprises a fixed shaft;

[0013] The first take-up roller and the second take-up roller are disposed on the fixed shaft and rotate around the fixed shaft.

[0014] Optionally, the winding device further comprises a first brake for controlling the first wire-taking roller to stop and a second brake for controlling the second wire-taking roller to stop.

[0015] Optionally, the temporary grounding device further comprises a grounding probe for inserting into the ground;

[0016] The top end of the grounding probe is electrically connected to a first connecting member;

[0017] The second end of the first wire is electrically connected to a second connecting piece for detachably connecting to the first connecting piece.

[0018] Optionally, the first wire and the second wire are graphene grounding wires.

[0019] Optionally, the temporary grounding device further includes an operating rod;

[0020] The operating rod comprises a rod portion, a hook portion and a first driving assembly;

[0021] The hook portion is movably disposed at the first end of the rod portion and is used to be hung on the conductor to be grounded;

[0022] The first driving assembly is used to drive the hook portion to move away from or approach the rod portion.

[0023] Optionally, the second end of the rod is provided with a switch for controlling the start and stop of the first driving assembly.

[0024] Optionally, the operating rod further comprises a third connecting member electrically connected to the hook portion;

[0025] The second end of the second wire is electrically connected to a fourth connecting member for detachably connecting to the third connecting member.

[0026] Optionally, the winding device further comprises a support frame for supporting the first wire taking-up roller and the second wire taking-up roller.

[0027] It can be seen from the above technical solutions that the present invention has the following advantages:

[0028] The present invention provides a temporary grounding device, including a winding device, a first wire and a second wire, the winding device including a first wire roller and a second wire roller that rotate or are stationary independently, the first wire and the second wire are respectively wound on the first wire roller and the second wire roller, the first end of the first wire is electrically connected to the first end of the second wire, the second end of the first wire is used for grounding, and the second end of the second wire is used for connecting to a conductor to be grounded. In actual application, the operator can first place the winding device in a suitable position according to the specific environmental conditions of the construction site; then hold the second end of the first wire, release it from the first wire roller, and connect it to the ground; then hold the second end of the second wire, release it from the second wire roller, and connect it to the grounding point of the conductor to be grounded. The whole process is convenient and fast, easy to operate, and the grounding wire that has been wound is easy to store and transport, which improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0030] Figure 1 A schematic structural diagram of a temporary grounding device provided by an embodiment of the present invention;

[0031] Figure 2 A schematic diagram of the structure of a winding device provided in an embodiment of the present invention;

[0032] Figure numerals: 11-first take-up roller; 12-second take-up roller; 13-fixed shaft; 14-support frame; 15-handle; 16-handle; 2-first wire; 3-second wire; 4-ground probe; 5-first connecting piece; 6-second connecting piece; 71-rod; 72-hook; 73-first drive assembly; 74-rotary switch; 8-third connecting piece; 9-fourth connecting piece. DETAILED DESCRIPTION

[0033] The embodiment of the present invention provides a temporary grounding device, which is used to solve the technical problem of low working efficiency caused by the inconvenience of storing, transporting and retracting the grounding wire used for temporary grounding.

[0034] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0036] Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] See also Figure 1 , Figure 1 A temporary grounding device provided in an embodiment of the present invention comprises: a winding device, a first conductor 2 and a second conductor 3;

[0038] like Figure 2 As shown, the winding device includes a first winding roller 11 and a second winding roller 12 which rotate or remain stationary independently;

[0039] The first conductor 2 is wound on the first take-up roller 11, and the second conductor 3 is wound on the second take-up roller 12;

[0040] The first end of the first wire 2 is electrically connected to the first end of the second wire 3;

[0041] The second end of the first conductive wire 2 is used for grounding, and the second end of the second conductive wire 3 is used for connecting to a conductor to be grounded.

[0042] It can be understood that the first wire 2 and the second wire 3 are both grounding wires, and graphene grounding wires are preferably used. The graphene grounding wire is a grounding wire that adds graphene material as a conductive medium. It has an extremely low resistivity and can quickly conduct current, effectively reducing the grounding resistance of the grounding system. Graphene wires with the same conductive performance will be lighter than other types of wires, making it easier to wind up and transport; the conductor to be grounded refers to a conductive component of an electrical device or circuit that needs to establish an electrical connection with the ground; the first wire 2 is wound on the first winding roller 11, and the second wire 3 is wound on the second winding roller 12, and the first winding roller 11 and the second winding roller 12 rotate and stop independently of each other, so that the first wire 2 and the second wire 3 can be independently wound up and unwound.

[0043] In actual application, the operator can first place the winding device in a suitable position according to the specific environmental conditions of the construction site; then hold the second end of the first wire 2, release it from the first winding roller 11, and connect it to the ground; then hold the second end of the second wire 3, release it from the second winding roller 12, and connect it to the grounding point of the conductor to be grounded. The whole process is convenient and fast, easy to operate, and the wound grounding wire is easy to store and transport, thereby improving work efficiency.

[0044] The first take-up roller 11 and the second take-up roller 12 may specifically include a hollow cylinder and annular baffles arranged on the outer edges of both ends of the cylinder; a handle 15 may be installed on the annular baffle for the operator to manually turn the take-up roller to reel in and out; the reeling device may also include an axis for providing support and a rotation axis for the cylinder, the axis passing through the hollow part of the cylinder; in order to facilitate reeling, each take-up roller is preferably arranged in a manner that the rotation axis is parallel to the horizontal plane; more specifically, the extension direction of the rotation axis of the first take-up roller 11 may be the same as or different from the extension direction of the rotation axis of the second take-up roller 12; preferably, the extension direction of the rotation axis of the first take-up roller 11 is the same as that of the second take-up roller 12, so that the first wire 2 and the second wire 3 are pulled out in opposite directions after unwinding, and the overall projection in the vertical direction after connecting to the earth and the grounding conductor respectively is a straight line, reducing the risk of tripping; at this time, the first take-up roller 1 The first and second take-up rollers 11 and 12 can be arranged side by side to make the structure of the winding device more compact, for example: side by side along the axial direction, penetrated on the same fixed shaft 13, rotated around the fixed shaft 13, or side by side along the horizontal radial direction, or side by side along the vertical radial direction; in addition, due to the diversity of the construction site environment, there may be a lack of land suitable for grounding (unsuitable grounding conditions: rocks, contaminated corrosive soil, etc.) or a lack of sufficient space to place the winding device, and it cannot be guaranteed that the projection in the vertical direction is a straight line connection. Therefore, a rotation adjustment device for adjusting the position of the corresponding shaft body can be installed at the bottom of the first take-up roller 11 and / or the second take-up roller 12, so that the angle between the extension direction of the rotation axis of the first take-up roller 11 and the extension direction of the rotation axis of the second take-up roller 12 can be adjusted, and can be locked after adjustment, so as to facilitate unwinding and winding in different directions, such as a turntable with a locking mechanism.

[0045] It should be noted that the electrical connection between the first end of the first wire 2 and the first end of the second wire 3 can be achieved in a variety of ways: in a specific embodiment, the first end of the wire is fixedly connected to a point on the cylinder of the take-up roller (such as welding, crimping, etc.), which is made of conductive material and is connected to the conductive shaft through the contact between the inner wall of the cylinder and the shaft, and the shafts of the two take-up rollers are electrically connected to each other or are the same shaft, so that the first end of the first wire 2 and the first end of the second wire 3 are connected; in another specific embodiment, the first take-up roller 11 and the second take-up roller 12 are arranged side by side in the axial direction, and a brush connected to the first end of the first wire 2 is provided on one end of the first take-up roller 11 facing the second take-up roller 12, and a conductive ring connected to the first end of the second wire 3 is provided on one end of the second take-up roller 12 facing the first take-up roller 11, so as to establish an electrical path between the first section of the first wire 2 and the first end of the second wire 3.

[0046] In a preferred embodiment, the winding device further comprises a first brake for controlling the first winding roller 11 to stop and a second brake for controlling the second winding roller 12 to stop, so that the first wire 2 and the second wire 3 can be accurately released to a specific length.

[0047] It can be understood that the first brake and the second brake can be mechanical brakes, electromagnetic brakes and other types of brakes, each brake can be directly installed on the shaft corresponding to each take-up roller, and the take-up roller can be decelerated or stopped by the friction between the inner side of the take-up roller body and the brake element, or installed at the end of the take-up roller, and the take-up roller can be decelerated or stopped by the friction between the brake element and the shaft.

[0048] Furthermore, the winding device also includes a second drive assembly for driving the first winding roller 11 to rotate and a third drive assembly for driving the second winding roller 12 to rotate; specifically, the second drive assembly and the third drive assembly include a motor and corresponding transmission parts, which can help speed up the winding operation, and the rotation method can adopt chain drive, gear drive, belt drive, etc.

[0049] In a preferred embodiment, the temporary grounding device provided by the present invention also includes a grounding probe 4 for inserting into the ground, the top end of the grounding probe 4 is electrically connected to a first connector 5, and the second end of the first wire 2 is electrically connected to a second connector 6 for detachably connecting to the first connector 5.

[0050] In another preferred embodiment, the operating rod further includes a third connecting member 8 electrically connected to the hook portion 72 , and the second end of the second wire 3 is electrically connected to a fourth connecting member 9 for detachable connection to the third connecting member 8 .

[0051] The first connecting member 5 and the second connecting member 6, the third connecting member 8 and the fourth connecting member 9 can be any mutually cooperating and detachably connected structures, such as a sleeve with a built-in buckle or slot and a corresponding connector, two clamping rings, etc.; in order to ensure the safety of the connection, it is preferred to use a sleeve and a corresponding connector, and the parts that contact each other when the sleeve and the connector are clamped are made of conductive material. After the sleeve and the connector are clamped, the exposed surfaces are covered with insulating material.

[0052] In actual application, the setting of the first connecting member 5 and the second connecting member 6, the third connecting member 8 and the fourth connecting member 9 allows the operator to choose to replace the grounding probes and operating rods of different sizes and materials according to the actual working conditions; at the same time, the first connecting member 5 and the second connecting member 6, the third connecting member 8 and the fourth connecting member 9 can be separated before grounding or after the operation is completed, and the winding device, the operating rod and the grounding probe can be stored and transported respectively.

[0053] In a preferred embodiment, the temporary grounding device provided by the present invention also includes an operating rod; the operating rod includes a rod portion 71, a hook portion 72 and a first driving component 73; the hook portion 72 is movably arranged at the first end of the rod portion 71, and is used to hang on the conductor to be grounded; the driving end of the first driving component 73 is connected to the hook portion 72, and the non-driving end of the first driving component 73 is connected to the rod portion 71, and is used to drive the hook portion 72 away from or close to the rod portion 71.

[0054] It can be understood that the hook portion 72 can move away from or approach the rod portion 71, so that the operating rod can adapt to the needs of different heights and positions; preferably, the hook portion 72 is specifically arranged on the side of the first end of the rod portion 71. When the hook portion 72 moves to the closest to the rod portion 71, it can form a ring together with the rod portion 71. After the hook portion 72 is hung on the conductor to be grounded (such as the ground wire of a high-voltage cable), the movement of the hook portion 72 can adjust the tightness of its suspension to prevent the hook portion 72 from falling off, resulting in poor contact and affecting operational safety.

[0055] Furthermore, the first drive assembly may include a motor and corresponding transmission parts. The motor switch of the first drive assembly may be set at the second end of the rod 71 to facilitate the operator to adjust the position of the hook 72. For example, a switch button may be set at the second end of the rod 71, or a handle-type rotary switch 74 coaxial with the rod 71 may be set at the second end of the rod 71. The operator holds the rod 71 with one hand and holds and twists the handle-type rotary switch 74 with the other hand to start or stop the motor of the first drive assembly.

[0056] In a preferred embodiment, the winding device also includes a support frame 14, which is made of insulating material and is fixedly connected to the shafts corresponding to the first winding roller 11 and the second winding roller 12. When the winding device is placed on the ground, the support frame 14 can support the first winding roller 11 and the second winding roller 12; a handle 16 is also provided on the support frame 14, so that the operator can easily move the winding device.

[0057] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A temporary grounding device, characterized in that: include: A winding device, a first conductor and a second conductor; The winding device comprises a first winding roller and a second winding roller which are independently rotatable or stationary; The first conductive wire is wound on the first take-up roller, and the second conductive wire is wound on the second take-up roller; The first end of the first wire is electrically connected to the first end of the second wire; The second end of the first conductive wire is used for grounding, and the second end of the second conductive wire is used for connecting to a conductor to be grounded.

2. The temporary grounding device according to claim 1, characterized in that: The extending direction of the rotation axis of the first take-up roller is the same as the extending direction of the rotation axis of the second take-up roller.

3. The temporary grounding device according to claim 1, characterized in that: The winding device also includes a fixed shaft; The first take-up roller and the second take-up roller are disposed on the fixed shaft and rotate around the fixed shaft.

4. The temporary grounding device according to claim 1, characterized in that: The winding device further includes a first brake for controlling the first wire-taking roller to stop and a second brake for controlling the second wire-taking roller to stop.

5. The temporary grounding device according to claim 1, characterized in that: Also included is a ground probe for insertion into the ground; The top end of the grounding probe is electrically connected to a first connecting member; The second end of the first wire is electrically connected to a second connecting piece for detachably connecting to the first connecting piece.

6. The temporary grounding device according to claim 1, characterized in that: The first wire and the second wire are graphene grounding wires.

7. The temporary grounding device according to claim 1, characterized in that: Also includes an operating lever; The operating rod comprises a rod portion, a hook portion and a first driving assembly; The hook portion is movably disposed at the first end of the rod portion and is used to be hung on the conductor to be grounded; The first driving assembly is used to drive the hook portion to move away from or approach the rod portion.

8. The temporary grounding device according to claim 7, characterized in that: The second end of the rod is provided with a switch for controlling the start and stop of the first driving assembly.

9. The temporary grounding device according to claim 7, characterized in that: The operating rod further includes a third connecting member electrically connected to the hook portion; The second end of the second wire is electrically connected to a fourth connecting member for detachably connecting to the third connecting member.

10. The temporary grounding device according to claim 1, characterized in that: The winding device also includes a support frame for supporting the first wire taking-up roller and the second wire taking-up roller.

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