Grounding wire sets for low voltage circuit breakers

Abstract

The present invention belongs to the technical field of electrical equipment, and discloses a complete set of grounding wires for low-voltage circuit breakers. The complete set of grounding wires for low-voltage circuit breakers includes a connector, a grounding wire, a nut and an operating assembly. The connector includes a clamping portion and a locking portion that are connected to each other. The clamping portion can be fixedly connected to the wiring terminal of the low-voltage circuit breaker; the wire ear of the grounding wire is sleeved on the locking portion; the nut is sleeved on the locking portion and is screwed with the locking portion, and the nut can lock the wire ear; the operating assembly is sleeved on the nut and is clamped and connected to the nut, and the operating assembly can tighten the nut. The complete set of grounding wires for low-voltage circuit breakers provided by the present invention is fixedly connected to the wiring terminal of the low-voltage circuit breaker through the clamping portion, the wire ear of the grounding wire is sleeved on the locking portion, the nut is sleeved on the locking portion and is screwed with the locking portion, and the screwing operating assembly is used to tighten the nut, so that the nut locks the wire ear of the grounding wire. The structure is simple and easy to operate.

Description

Technical Field

[0001] The invention relates to the technical field of electrical equipment, and in particular to a complete set of grounding wires for low-voltage circuit breakers. Background Art

[0002] The power system has experienced a long period of development, and the grounding wires used in the maintenance of power grid equipment are also constantly updated. There are many types of grounding wires. The most widely used grounding wires are mostly composed of contact heads, insulating rods and soft copper wires. When using them, choose the grounding wire with the corresponding contact head according to the type of equipment. When grounding the substation busbar and the load side of the high-voltage switch cabinet, a flat-end grounding wire should be used. When grounding the high-voltage distribution box without a load switch, a grounding wire with a special connector should be used, or a set of terminal heads should be disassembled and then a wire clamp type grounding wire should be used.

[0003] When grounding low-voltage circuit breakers, especially low-voltage circuit breakers in meter boxes, it is difficult to ground the low-voltage circuit breakers due to the large size of the grounding wire heads. Workers often hang them by pulling open the insulation layer of the line, which not only damages the insulation layer but also reduces the insulation effect. In addition, domestic insulated wires have different specifications and models, and the thickness of the insulation layer varies, making it difficult to peel the wires. The grounding wire device is inconvenient to disassemble and assemble, and it is time-consuming and laborious for workers to operate. This brings difficulties to power outage maintenance work and increases the workload of operation and maintenance personnel. Summary of the invention

[0004] The object of the present invention is to provide a complete set of grounding wires for low voltage circuit breakers, so as to solve the problems in the prior art that the grounding wire connection device is inconvenient to disassemble and assemble and the operation is time-consuming and laborious.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A complete set of grounding wires for low voltage circuit breakers, comprising:

[0007] A connector, the connector comprising a clamping portion and a locking portion connected to each other, the clamping portion being fixedly connected to a terminal of the low-voltage circuit breaker;

[0008] A grounding wire, wherein a wire ear sleeve of the grounding wire is arranged on the locking portion;

[0009] A nut, the nut is sleeved on the locking portion and threadedly connected with the locking portion, and the nut can lock the wire ear;

[0010] An operating component is sleeved on the nut and is snap-connected with the nut, and the operating component can perform a tightening operation on the nut.

[0011] Optionally, the operation component includes:

[0012] A screwing piece, one end of which is provided with a receiving groove;

[0013] A sleeve connector is disposed in the accommodating groove and is engaged and connected with the nut.

[0014] Optionally, the sleeve member is fixedly connected to the screw member;

[0015] Alternatively, the sleeve member and the screw member are integrally formed.

[0016] Optionally, the sleeve is a cylindrical structure, and a stepped groove is provided in the sleeve along the axial direction, and the stepped groove includes:

[0017] A clamping groove, the clamping groove is used to accommodate and be clamped and connected with the outer periphery of the nut;

[0018] An escape groove is used to accommodate the locking portion.

[0019] Optionally, cross-sections of the clamping groove and the nut are both regular hexagons.

[0020] Optionally, the connecting member further comprises a screw-on portion, the screw-on portion is connected to the locking portion, and the screw-on portion and the locking portion are coaxially arranged.

[0021] Optionally, the screw-on portion is rod-shaped, and a cross-section of the screw-on portion is a regular hexagon.

[0022] Optionally, the connecting member further comprises a transition portion, wherein the transition portion is arranged between the locking portion and the screw-on portion, and the transition portion is coaxially arranged with the locking portion.

[0023] Optionally, the thread of the locking portion is a circular thread.

[0024] Optionally, a groove is provided at the end of the clamping portion, and an internal thread is provided on the side wall of the groove, and the internal thread cooperates with the external thread of the terminal of the low-voltage circuit breaker.

[0025] Beneficial effects of the present invention: The complete set of grounding wires for low-voltage circuit breakers provided by the present invention is provided with a connecting piece, and the connecting piece includes a clamping part and a locking part that are connected to each other. When the grounding wire connecting device is used, it can be fixedly connected to the wiring terminal of the low-voltage circuit breaker through the clamping part, and the wire ear of the grounding wire is sleeved on the locking part, and the nut is sleeved on the locking part and is located on the outside of the wire ear of the grounding wire; by providing an operating component, the operating component is sleeved on the nut and is clamped and connected with the nut, and the operating component is screwed to tighten the nut, so that the nut locks the wire ear of the grounding wire. The structure is simple and the operation is convenient, which saves time and further improves the work efficiency of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a complete set of grounding wires for a low-voltage circuit breaker provided by the present invention;

[0027] Figure 2 is a schematic diagram of the structure of the operating component provided by the present invention;

[0028] Figure 3 The invention discloses an assembly diagram of a complete set of grounding wires for a low voltage circuit breaker.

[0029] In the figure:

[0030] 1. Connecting piece; 11. Clamping part; 12. Locking part; 13. Screwing part; 14. Transition part; 2. Grounding wire; 3. Nut; 4. Operating assembly; 41. Screwing piece; 411. Accommodating groove; 412. First through hole; 42. Socket piece; 421. Step groove; 4211. Clamping groove; 4212. Avoiding groove; 422. Second through hole. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0032] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0034] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0035] Embodiment 1

[0036] This embodiment provides a set of grounding wires for low voltage circuit breakers, such as Figure 1-Figure 3 As shown, the complete grounding wire set for the low-voltage circuit breaker includes a connector 1, a grounding wire 2, a nut 3 and an operating assembly 4. The connector 1 includes a clamping portion 11 and a locking portion 12 that are connected to each other. The clamping portion 11 can be fixedly connected to the terminal of the low-voltage circuit breaker; the wire ear of the grounding wire 2 is sleeved on the locking portion 12; the nut 3 is sleeved on the locking portion 12 and is threadedly connected to the locking portion 12, and the nut 3 can lock the wire ear; the operating assembly 4 is sleeved on the nut 3 and is clamped and connected with the nut 3, and the operating assembly 4 can tighten the nut 3.

[0037] The complete set of grounding wires for low-voltage circuit breakers provided by the present invention is provided with a connector 1, and the connector 1 includes a clamping portion 11 and a locking portion 12 connected to each other. When the grounding wire connection device is used, the clamping portion 11 can be used to fix the connection with the terminal of the low-voltage circuit breaker, and the wire ear of the grounding wire 2 is sleeved on the locking portion 12, and the nut 3 is sleeved on the locking portion 12 and located on the outside of the wire ear of the grounding wire 2; by providing an operating component 4, the operating component 4 is sleeved on the nut 3 and is connected by clamping with the nut 3, and the operating component 4 is screwed to tighten the nut 3, so that the nut 3 locks the wire ear of the grounding wire 2, the structure is simple, and the operation is convenient, which saves time and further improves the work efficiency of the operator. Among them, the low-voltage circuit breaker generally refers to a circuit breaker with a capacity range of 4A-5000A.

[0038] Optionally, the end of the clamping portion 11 is provided with a groove, and the side wall of the groove is provided with an internal thread, which cooperates with the external thread of the terminal of the low-voltage circuit breaker. By setting the clamping portion 11 to be threadedly connected with the terminal of the low-voltage circuit breaker, operation is convenient and disassembly is facilitated.

[0039] The clamping portion 11 is preferably a cylindrical structure, the length of the clamping portion 11 is 6cm-10cm, the diameter of the clamping portion 11 is 10mm-14mm, and the depth of the groove of the clamping portion 11 is 10mm-14mm. This arrangement is easy to process and manufacture. In this embodiment, the length of the clamping portion 11 is 8cm, the diameter of the clamping portion 11 is 12mm, and the depth of the groove of the clamping portion 11 is 12mm. In other embodiments, those skilled in the art can set the specific size of the clamping portion 11 according to actual needs.

[0040] The thread of the locking portion 12 is preferably a round thread. The round thread can prevent dirt accumulation and mechanical damage. Since there is no fragile edge, this thread is more wear-resistant than other threads, further improving the mechanical reliability of the locking portion 12.

[0041] Optionally, the locking portion 12 is rod-shaped, the length of the locking portion 12 is 2cm-6cm, and the diameter of the locking portion 12 is 8mm-12mm. This arrangement is conducive to processing and manufacturing. In this embodiment, the length of the locking portion 12 is 4cm, and the diameter of the locking portion 12 is 10mm. In other embodiments, those skilled in the art can set the specific size of the locking portion 12 according to actual needs.

[0042] The material of the grounding wire 2 is preferably soft copper, which is easy to carry and can be flexibly used on site.

[0043] The operating component 4 is made of insulating material to ensure the insulation of the operating component 4. Optionally, the material of the operating component 4 is glass fiber reinforced plastic epoxy resin, which is low in cost and easy to manufacture. In other embodiments, those skilled in the art can select suitable insulating materials according to actual needs.

[0044] like Figure 2 As shown, the operating assembly 4 includes a screwing member 41 and a sleeve member 42, one end of the screwing member 41 is provided with a receiving groove 411; the sleeve member 42 is arranged in the receiving groove 411, and the sleeve member 42 is engaged and connected with the nut 3. By providing the receiving groove 411 at one end of the screwing member 41, the sleeve member 42 is arranged in the receiving groove 411, and the sleeve member 42 is engaged and connected with the nut 3, the installation stability of the sleeve member 42 is improved, so that the sleeve member 42 can fully clamp the nut 3.

[0045] Optionally, the sleeve 42 is fixedly connected to the screwing member 41. This arrangement prevents relative movement between the screwing member 41 and the sleeve 42 when the screwing member 41 is screwed, resulting in the nut 3 being unable to lock the wire ear. Alternatively, the sleeve 42 and the screwing member 41 are integrally formed. This arrangement simplifies the process and improves the manufacturing efficiency.

[0046] Optionally, the sleeve 42 is a cylindrical structure, and a stepped groove 421 is axially provided inside the sleeve 42. The stepped groove 421 includes a clamping groove 4211 and an avoidance groove 4212. The clamping groove 4211 is used to accommodate and be connected to the outer periphery of the nut 3 by clamping groove 4211, and the avoidance groove 4212 is used to accommodate the locking portion 12. By providing the clamping groove 4211, the clamping groove 4211 can accommodate and be connected to the outer periphery of the nut 3 by clamping groove 4211, so as to improve the accuracy and reliability of the clamping of the sleeve 42 to the nut 3, prevent the nut 3 from relative movement, and further improve the operating efficiency of the operating assembly 4; by providing the avoidance groove 4212, the avoidance groove 4212 can accommodate the locking portion 12, so as to prevent the locking portion 12 from shaking during the rotation of the nut 3, thereby affecting the operating efficiency of the operating assembly 4.

[0047] The cross sections of the clamping groove 4211 and the nut 3 are preferably regular hexagons. This arrangement makes the cross section of the clamping groove 4211 and the cross section of the nut 3 have the same shape, thereby improving the locking efficiency.

[0048] Embodiment 2

[0049] This embodiment provides another complete set of grounding wires for low voltage circuit breakers, and the basic structure of the complete set of grounding wires for low voltage circuit breakers provided in this embodiment is the same as that of the first embodiment, with only some structures being different. This embodiment only describes the structures different from the first embodiment.

[0050] In this embodiment, when the clamping portion 11 is connected to the terminal of the low-voltage circuit breaker, in order to facilitate the screwing of the connector 1, the connector 1 further includes a screwing portion 13, the screwing portion 13 is connected to the locking portion 12, and the screwing portion 13 is coaxially arranged with the locking portion 12. By providing the screwing portion 13, it is convenient to ensure that the clamping portion 11 is threadedly connected to the terminal of the low-voltage circuit breaker, which is convenient to operate and improves work efficiency.

[0051] Further, the screw-on portion 13 is rod-shaped, and the cross section of the screw-on portion 13 is a regular hexagon. This arrangement facilitates the staff to take the screw-on portion 13. Optionally, the length of the screw-on portion 13 is 8 cm-12 cm, which is convenient for taking. In this embodiment, the length of the screw-on portion 13 is 10 cm. Those skilled in the art can set the specific size of the screw-on portion 13 according to actual needs.

[0052] The connector 1 also includes a transition portion 14, which is disposed between the locking portion 12 and the screw-on portion 13, and the transition portion 14 is coaxially disposed with the locking portion 12. This arrangement prevents the wire ear of the grounding wire 2 from rotating with the nut 3 when the operating assembly 4 is sleeved on the nut 3. Specifically, the transition portion 14 is rod-shaped, the length of the transition portion 14 is 2cm-4cm, and the diameter of the transition portion 14 is 6mm-10mm. This arrangement is easy to process and manufacture. Preferably, the length of the transition portion 14 is 3cm, and the diameter of the transition portion 14 is 8mm. In other embodiments, those skilled in the art may set the size of the transition portion 14 according to actual needs.

[0053] like Figure 2 and Figure 3 As shown, the bottom of the receiving groove 411 of the screwing member 41 is provided with a first through hole 412, and the bottom of the avoiding groove 4212 of the sleeve member 42 is provided with a second through hole 422, and the first through hole 412 is connected to the second through hole 422. When the operating component 4 is sleeved on the nut 3, the operating component 4 is sleeved on the screwing portion 13, the transition portion 14, part of the locking portion 12 and the nut 3 in sequence, the screwing portion 13 is inserted into the first through hole 412, the transition portion 14 is partially located in the first through hole 412, and the other part of the transition portion 14 is located in the second through hole 422, and the assembly of the operating component 4 before screwing is completed, thereby improving the reliability of the grounding wire connection device.

[0054] Preferably, the cross section of the second through hole 422 is a regular hexagon, so that the screw-on portion 13 can enter the first through hole 412 and the screw-on portion 13 can be engaged. When the connector 1 is connected to the terminal of the low-voltage circuit breaker, the operating assembly 4 can be first sleeved on the screw-on portion 13, the sleeve 42 is engaged with the screw-on portion 13, and the operating assembly 4 is screwed to drive the connector 1 to rotate, thereby realizing the connection between the connector 1 and the terminal of the low-voltage circuit breaker.

[0055] The operation process of using the complete set of grounding wires for low-voltage circuit breakers to ground the grounding terminal includes: first, the operating component 4 is sleeved onto the screw-on portion 13, the sleeve 42 is engaged with the screw-on portion 13, and the operating component 4 is screwed to drive the connector 1 to rotate, so as to achieve the connection between the connector 1 and the terminal of the low-voltage circuit breaker; the operating component 4 is continued to be pushed toward the clamping portion 11, the screw-on portion 13 passes through the second through hole 422 and enters the first through hole 412, the clamping groove 4211 of the sleeve 42 is engaged with the nut 3, the transition portion 14 is pushed into the first through hole 412 and the second through hole 422, the operating component 4 is screwed to tighten the nut 3, the wire ear of the grounding wire 2 will not rotate with the nut 3, the operating component 4 is screwed to make the wire ear abut against the clamping portion 11, and the nut 3 locks the wire ear.

[0056] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A complete set of grounding wires for low voltage circuit breakers, characterized in that: include: A connecting piece (1), the connecting piece (1) comprising a clamping portion (11) and a locking portion (12) connected to each other, the clamping portion (11) being capable of being fixedly connected to a terminal of the low-voltage circuit breaker; A grounding wire (2), wherein a wire ear sleeve of the grounding wire (2) is arranged on the locking portion (12); a nut (3), the nut (3) being sleeved on the locking portion (12) and being threadedly connected to the locking portion (12), the nut (3) being capable of locking the wire ear; An operating component (4), the operating component (4) being sleeved on the nut (3) and being snap-connected with the nut (3), and the operating component (4) being capable of performing a tightening operation on the nut (3); The operating component (4) comprises: A screwing member (41), wherein one end of the screwing member (41) is provided with a receiving groove (411); A sleeve connector (42), the sleeve connector (42) being disposed in the receiving groove (411), the sleeve connector (42) being snap-fitted and connected to the nut (3); The sleeve connector (42) is a cylindrical structure, and a stepped groove (421) is provided in the sleeve connector (42) along the axial direction. The stepped groove (421) comprises: A clamping groove (4211), the clamping groove (4211) is used to accommodate and be clamped and connected with the outer periphery of the nut (3); An avoidance groove (4212), the avoidance groove (4211) being used to accommodate the locking portion (12); The cross-sections of the clamping groove (4211) and the nut (3) are both regular hexagons.

2. The complete set of grounding wires for low voltage circuit breakers according to claim 1, characterized in that: The sleeve member (42) is fixedly connected to the screw member (41); Alternatively, the sleeve member (42) and the screw member (41) are integrally formed.

3. The complete set of grounding wires for low voltage circuit breakers according to claim 1, characterized in that: The connecting member (1) further comprises a screw-on portion (13), wherein the screw-on portion (13) is connected to the locking portion (12), and the screw-on portion (13) and the locking portion (12) are coaxially arranged.

4. The complete set of grounding wires for low voltage circuit breakers according to claim 3, characterized in that: The screw-on portion (13) is rod-shaped, and the cross section of the screw-on portion (13) is a regular hexagon.

5. The complete set of grounding wires for low voltage circuit breakers according to claim 3, characterized in that: The connecting member (1) further comprises a transition portion (14), wherein the transition portion (14) is arranged between the locking portion (12) and the screw-on portion (13), and the transition portion (14) is coaxially arranged with the locking portion (12).

6. The complete set of grounding wires for low voltage circuit breakers according to any one of claims 1 to 5, characterized in that: The thread of the locking portion (12) is a circular thread.

7. The complete set of grounding wires for low voltage circuit breakers according to any one of claims 1 to 5, characterized in that: The end of the clamping portion (11) is provided with a groove, and the side wall of the groove is provided with an internal thread, and the internal thread cooperates with the external thread of the connection terminal of the low-voltage circuit breaker.

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