Electric wire clamp for live detection of power equipment
By designing a flexible wire clamping structure, the problem of contact surface gap caused by the difference in thermal expansion coefficients of wire clamps is solved, thereby improving the stability and lifespan of the wire clamps.
Patent Information
- Application Number
- CN202423297263.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing wire clamps are prone to gaps at the contact surface due to differences in thermal expansion coefficients, which increases contact resistance and generates heat, potentially causing the clamps to burn out or break.
A wire clamp is designed, comprising an outer clamping component, a compensating movable clamping assembly, and a movable clamping component. Through the cooperation of fastening bolts and washers, the wire clamping component and the C-shaped mating component can be slidably engaged, providing a certain degree of flexibility. The compensating movable clamping assembly provides deformation space to avoid excessive compression of the wire.
It improves the stability and lifespan of the wire clamp, avoids gaps in the contact surface caused by thermal expansion and deformation, and reduces the risk of thermal fatigue fracture.
Smart Images
Figure CN223770251U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of power testing equipment technology, and in particular to a wire clamp for live testing of power equipment. Background Technology
[0002] Power equipment mainly includes two categories: power generation equipment and power supply equipment. After a period of use, power equipment needs to be tested regularly to ensure that it meets the requirements of relevant national and industry standards. Wire clamps are commonly used devices in live testing, used to fix and position wires, thereby enabling live testing of power equipment.
[0003] Common wire clamps include aluminum C-type clamps, which are generally made of aluminum alloy. During use, due to the significant difference in the coefficients of thermal expansion between aluminum and copper, when the clamp heats up, the aluminum expands and compresses the copper. This compression cannot be fully recovered after cooling. After prolonged operation, this repeated compression can create gaps on the contact surface, affecting the contact area and increasing the contact resistance. This leads to the generation of more heat, and under the continuous effect of thermal fatigue, the clamp will burn out or even break. Therefore, this application provides a wire clamp for live-line testing of power equipment to meet the requirements. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a wire clamp for live-line testing of power equipment to solve the problem that existing wire clamps are prone to thermal fatigue fracture.
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:
[0006] A wire clamp for live-line testing of power equipment includes an outer clamping member. Inside the outer clamping member are a compensating movable clamping assembly and a movable clamping member. The compensating movable clamping assembly and the movable clamping member are movably engaged. A fastening bolt is located in the middle of the outer clamping member. The fastening bolt passes through the outer clamping member, the compensating movable clamping assembly, and the movable clamping member, and is connected to a fastening nut. A washer is fitted on the fastening bolt. The washer is located at the bottom of the fastening nut and contacts the compensating movable clamping assembly. The compensating movable clamping assembly includes a C-shaped fitting that mates with the movable clamping member. One side of the C-shaped fitting has a wire clamping member that mates with the outer clamping member. The wire clamping member and the C-shaped fitting are slidably engaged.
[0007] Optionally, the wire clamp includes a crescent-shaped head that contacts the wire, and a first square tail is fixedly connected to the outer wall of the crescent-shaped head. The upper and lower side walls of the first square tail are symmetrically provided with U-shaped grooves.
[0008] Optionally, a compensation protrusion is fixedly connected to the inner wall of the U-shaped groove near the crescent head, and the compensation protrusion has an arched structure.
[0009] Optionally, the compensation protrusion has deformation holes on its sidewall, and the deformation hole structure is adapted to the compensation protrusion.
[0010] Optionally, guide grooves are provided at both ends of the compensating arch.
[0011] Optionally, a constraint groove is provided in the middle of the first square tail, and the constraint groove is an arc-shaped structure.
[0012] Optionally, the C-type mating part includes an arc-shaped head that mates with the compensating movable clamping assembly. The arc-shaped head is adapted to the end structure of the compensating movable clamping assembly, and a second square tail is fixedly connected to the outer wall of the arc-shaped head.
[0013] Optionally, the second square tail sidewall is provided with a mating groove, which has a T-shaped structure and is adapted to the first square tail.
[0014] Optionally, a clearance groove is provided in the middle of the arc-shaped head, the clearance groove having the same width as the deformation hole, and the clearance groove being adapted to the deformation hole.
[0015] Compared with the prior art, this utility model has at least the following beneficial effects:
[0016] In the above solution, by setting up a compensating movable clamping assembly, the cooperation between the wire clamping component and the C-shaped mating component allows the length of the compensating movable clamping assembly to have a certain degree of flexibility. When the wire clamp clamps the wire tightly, the rigid cooperation between the wire clamping component and the C-shaped mating component makes the clamping of the wire relatively stable. When the wire clamp expands and deforms due to heat, the compensating movable clamping assembly can provide sufficient deformation space to avoid excessive compression of the wire after the wire clamp deforms, which would cause gaps in the contact surface and affect the service life of the wire clamp. Attached Figure Description
[0017] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the present invention and, together with the specification, further serve to explain the principles of the present invention and enable those skilled in the art to implement and use the present invention.
[0018] Figure 1 A schematic diagram of the three-dimensional structure of a wire clamp used for live-line testing of power equipment;
[0019] Figure 2 A schematic diagram of the three-dimensional structure of the compensating clamping component;
[0020] Figure 3A schematic diagram of the three-dimensional structure of the wire clamping component;
[0021] Figure 4 This is a schematic diagram of the C-type mating component.
[0022] Figure 5 for Figure 1 A magnified three-dimensional structural diagram of point A in the middle.
[0023] Figure label:
[0024] 1. External clamping component; 2. Compensating movable clamping assembly; 3. Movable clamping component; 4. Fastening bolt; 5. Fastening nut; 6. Washer; 7. Wire clamping component; 8. C-shaped mating component; 9. Crescent head; 10. First square tail; 11. U-shaped slide groove; 12. Compensating protrusion; 13. Deformation hole; 14. Guide groove; 15. Arc-shaped head; 16. Second square tail; 17. Mating slot; 18. Clearance groove; 19. Constraint groove.
[0025] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiment of this utility model. However, this is only for illustrative purposes and is not intended to limit this utility model to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation
[0026] The following is a detailed description of a wire clamp for live-line detection of power equipment provided by this utility model, with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this utility model.
[0027] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when describing a specific feature, structure, or characteristic in conjunction with embodiments, implementing such a feature, structure, or characteristic in conjunction with other embodiments should be within the knowledge of those skilled in the art.
[0028] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.
[0029] It is understood that the meanings of “on”, “above”, and “above” in this utility model should be interpreted in the broadest manner, such that “on” not only means “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” not only means “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.
[0030] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.
[0031] like Figures 1 to 5As shown, an embodiment of this utility model provides a wire clamp for live-line testing of power equipment, including an outer clamping member 1. The outer clamping member 1 contains a compensating movable clamping assembly 2 and a movable clamping member 3, which are movably engaged. A fastening bolt 4 is located in the middle of the outer clamping member 1, passing through the outer clamping member 1, the compensating movable clamping assembly 2, and the movable clamping member 3, and is connected to a fastening nut 5. A washer 6 is fitted on the fastening bolt 4, located at the bottom of the fastening nut 5 and in contact with the compensating movable clamping assembly 2. The compensating movable clamping assembly 2 includes a C-shaped fit that mates with the movable clamping member 3. Part 8, on one side of the C-type mating part 8, is a wire clamping part 7 that mates with the outer clamping part 1. The wire clamping part 7 and the C-type mating part 8 are slidably engaged. By setting up a compensating movable clamping assembly 2, the engagement between the wire clamping part 7 and the C-type mating part 8 allows the length of the compensating movable clamping assembly 2 to have a certain degree of flexibility. When the wire clamp clamps the wire tightly, the rigid engagement between the wire clamping part 7 and the C-type mating part 8 makes the clamping of the wire relatively stable. When the wire clamp expands and deforms due to heat, the compensating movable clamping assembly 2 can provide sufficient deformation space to avoid excessive compression of the wire after the wire clamp deforms, which would cause gaps in the contact surface and affect the service life of the wire clamp.
[0032] like Figure 3 and Figure 5 As shown, the wire clamp 7 includes a crescent-shaped head 9 that contacts the wire. A first square tail 10 is fixedly connected to the outer wall of the crescent-shaped head 9. U-shaped grooves 11 are symmetrically formed on the upper and lower side walls of the first square tail 10. A compensation protrusion 12 is fixedly connected to the inner wall of the U-shaped groove 11 near the crescent-shaped head 9. The compensation protrusion 12 has an arched structure, and deformation holes 13 are formed on its side wall. The deformation holes 13 are adapted to the structure of the compensation protrusion 12. By setting the deformation holes 13, the compensation... An arched thin plate is formed between the protrusions 12, enabling the compensation protrusions 12 to deform. Guide grooves 14 are respectively provided at both ends of the arch of the compensation protrusions 12. By setting the guide grooves 14, a certain space is provided for the deformation of the compensation protrusions 12, avoiding the compensation protrusions 12 from being excessively squeezed and breaking. At the same time, it can also guide the deformation direction of the compensation protrusions 12, avoiding the gap between the wire clamping part 7 and the C-shaped mating part 8 caused by different deformation structures of the compensation protrusions 12, which would affect the stability of the wire clamping.
[0033] like Figure 4 and Figure 5As shown, the first square tail 10 has a constraint groove 19 in the middle. The constraint groove 19 has an arc-shaped structure. By setting the constraint groove 19, the fastening bolt 4 is embedded in the constraint groove 19 during use to constrain the first square tail 10 and prevent the first square tail 10 from sliding relative to the second square tail 16, thereby achieving the purpose of stable clamping. The C-type mating part 8 includes an arc-shaped head 15 that mates with the compensation movable clamping assembly 2. The arc-shaped head 15 is adapted to the end structure of the compensation movable clamping assembly 2. The second square tail 16 is fixedly connected to the outer wall of the arc-shaped head 15. The side wall of the second square tail 16 has a mating groove 17. The mating groove 17 has a T-shaped structure and is adapted to the first square tail 10. The arc-shaped head 15 has a relief groove 18 in the middle. The relief groove 18 has the same width as the deformation hole 13 and is adapted to it.
[0034] The working principle of this utility model is as follows: In use, the compensating movable clamping assembly 2 and the movable clamping member 3 are respectively engaged with both ends of the outer clamping member 1. The fastening bolt 4 passes through the outer clamping member 1, the compensating movable clamping assembly 2, and the movable clamping member 3, and engages with the washer 6 and the fastening nut 5. The compensating movable clamping assembly 2 and the movable clamping member 3 are rotatably connected through the engagement of the fastening bolt 4. By rotating the fastening nut 5, the movement space of the compensating movable clamping assembly 2 and the movable clamping member 3 inside the outer clamping member 1 can be changed. When the wire... When the wire passes through the outer clamping member 1 and is located between the outer clamping member 1 and the compensating movable clamping component 2, or between the outer clamping member 1 and the movable clamping member 3, a triangular structure is formed between the outer clamping member 1, the compensating movable clamping component 2, and the movable clamping member 3. The fastening nut 5 is located at the top of the triangular structure. By rotating the fastening nut 5 to press down the top height of the triangular structure, the gap between the outer clamping member 1 and the compensating movable clamping component 2, and between the outer clamping member 1 and the movable clamping member 3, can be reduced, thereby clamping and fixing the wire located therein.
[0035] After the wire is clamped and fixed, the top of the compensation protrusion 12 abuts against the outer wall of the mating slot 17, and there is a certain gap between the bottom of the first square tail 10 and the bottom of the mating slot 17. When the wire and the clamp are heated and expanded, the arch of the compensation protrusion 12 decreases, and the gap between the bottom of the first square tail 10 and the bottom of the mating slot 17 shrinks.
[0036] This utility model encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this utility model. To provide the public with a thorough understanding of this utility model, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand this utility model even without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this utility model, well-known methods, processes, procedures, components, and circuits are not described in detail.
[0037] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A wire clamp for live detection of electrical equipment, characterized by, The utility model provides a compensation active clamping assembly and active clamping piece are equipped with in the outer bracket clamping piece, the compensation active clamping assembly and active clamping piece active clamping, the outer bracket clamping piece middle part is equipped with fastening bolt, fastening bolt passes through the outer bracket clamping piece, compensation active clamping assembly and active clamping piece and fastening nut cooperation and connection, fastening bolt is equipped with gasket, gasket is equipped with compensation active clamping assembly and contacts in fastening nut bottom part, compensation active clamping assembly includes the C type cooperation piece of cooperation with active clamping piece, C type cooperation piece one side is equipped with the wire clamping piece of cooperation with the outer bracket clamping piece, wire clamping piece and C type cooperation piece sliding clamping.
2. The electrical wire clamp for live detection of electrical equipment according to claim 1, characterized by, The wire clamping piece includes a crescent head in contact with the wire, a first square tail fixedly connected to the outer side wall of the crescent head, and U-shaped sliding grooves symmetrically formed in the upper and lower side walls of the first square tail.
3. The electrical wire clamp for live detection of electrical equipment according to claim 2, characterized by, The compensation protrusion is fixedly connected to the inner side wall of the U-shaped sliding groove close to the crescent head and has an arch-shaped structure.
4. The electrical wire clamp for live detection of electrical equipment according to claim 3, characterized by, The compensation protrusion side wall is provided with a deformation hole matched with the compensation protrusion.
5. The electrical wire clamp for live detection of electrical equipment according to claim 4, wherein, The compensation protrusion has a guide groove at each end of the arch-shaped structure.
6. The electrical wire clamp for live detection of electrical equipment according to claim 5, wherein, The first square tail is provided with a constraint groove in the middle part and has an arc-shaped structure.
7. The electrical wire clamp for live detection of electrical equipment according to claim 6, wherein, The C-shaped cooperation piece includes an arc-shaped head matched with the compensation active clamping assembly, the arc-shaped head is matched with the end structure of the compensation active clamping assembly, and the arc-shaped head is fixedly connected with a second square tail on the outer side wall.
8. The electrical wire clamp for live detection of electrical equipment according to claim 7, characterized by, The second square tail is provided with a matched clamping groove on the side wall, and the matched clamping groove has a T-shaped structure matched with the first square tail.
9. The electrical wire clamp for live detection of electrical equipment according to claim 8, wherein, The arc-shaped head is provided with an avoidance groove in the middle part, and the avoidance groove has the same width as the deformation hole. The avoidance groove is matched with the compensation protrusion.