Wire clamp for processing overheating of cable terminal drainage plate in electrified state
By designing a wire clip for overheating of the cable terminal drainage plate under live state, the problem of overheating of the cable terminal joint under high temperature and high load is solved by using the combination of the wire clip body, the drainage plate pressure plate and the pressure plate fastening shaft, the problem of overheating of the cable terminal joint under high temperature and high load is achieved. The connector processing for non-powered operations improves the reliability of power supply.
Patent Information
- Application Number
- CN202411500772.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-02-07
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The cable terminal joints are prone to overheating under high temperature and high load conditions, resulting in circuit breakage accidents. The existing technology is difficult to effectively solve this problem without power outage.
Design a wire clip for handling overheating of the cable terminal drainage plate in a live state, including the wire clip body, the drainage plate pressure plate and the pressure plate fastening shaft. By installing without power outage, the pressure plate is fastened and conducted to divert the current. Current, solve the problem of overheating.
It can solve the problem of overheating of the connector without power outage when the cable is powered on, enhance the reliability of power supply and avoid disconnection accidents.
Smart Images
Figure CN119401142A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of live processing of energized lines, and in particular to a wire clamp used for processing overheating of a cable terminal drain plate in a live state. Background Art
[0002] The cable terminal joint is a key device for connecting cable lines and overhead lines. Due to the quality of construction technology and later operation, the bolts fixing the cable terminal drain plate and the conductor drain plate are prone to loosening, resulting in overheating defects in the joints. If not handled in time, the temperature will rise until the joints are burned, resulting in line break accidents. In response to the phenomenon that the bolts of the cable terminal joints are prone to loosening, the existing technology has mainly carried out technical innovations in terms of construction quality control and the development of anti-loosening wire clamps.
[0003] However, it is particularly difficult to apply for unplanned power outages during cable operation, especially during high temperature and high load periods in summer. It is precisely under high temperature and high load conditions that the cable terminal drainage plate is most likely to overheat, thereby causing the power line to break.
[0004] Therefore, how to solve the problem of joint overheating by operating without powering off when the circuit is energized and enhance the reliability of power supply is an urgent problem to be solved by those skilled in the art. Summary of the invention
[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a wire clamp that has a simple structure, is easy to use, has a high safety factor, can be installed without power outages, and can solve the problem of joint overheating without power outages for maintenance, thereby effectively ensuring the reliability of power supply and being used to deal with overheating of cable terminal drain plates under energized conditions.
[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a wire clamp for handling overheating of a cable terminal drain plate under energized state, comprising a wire clamp body, a drain plate pressure plate, and a pressure plate fastening shaft, the wire clamp body is provided with a fastening threaded hole, the pressure plate fastening shaft is screwed through the fastening threaded hole, and then pressed against the drain plate pressure plate, the drain plate pressure plate is arranged on the inner side of the wire clamp body, the drain plate pressure plate comprises a front pressure plate, a side pressure plate, and a rear pressure plate, the front pressure plate is attached to the joint drain plate, the rear pressure plate is attached to the cable terminal joint drain plate, and the same side of the side pressure plate abuts and connects the front pressure plate and the rear pressure plate.
[0007] The above-mentioned wire clamp for handling overheating of the cable terminal drain plate under energized state, the wire clamp body includes a front plate, a rear plate, and a side plate, the front plate is parallel to the rear plate, the front plate and the rear plate are vertically arranged on the same side of the side plate, and the front plate, the rear plate, and the side plates are respectively provided with the fastening threaded holes.
[0008] The above-mentioned wire clamp used to deal with overheating of the cable terminal drain plate under energized state, the side pressure plate includes a side pressure plate body, a first fixed groove, and a pressure plate groove, the first fixed groove is annular and is arranged in the middle position of the side pressure plate body, the pressure plate fastening shaft is pressed against the first fixed groove, and the pressure plate groove is long and strip-shaped and is arranged on the surface of the side pressure plate body where the front pressure plate and the rear pressure plate abut against the side pressure plate.
[0009] The above-mentioned wire clamp used for handling overheating of the cable terminal drain plate under energized state, the front pressure plate and the rear pressure plate have the same structure, the front pressure plate includes a front pressure plate body, a second fixing groove, a cable terminal fixing hole, and a pressure plate side convex, the second fixing groove is arranged in the middle position of the front pressure plate body, the pressure plate fastening shaft abuts in the second fixing groove, the cable terminal fixing hole is arranged on the front pressure plate body on the side of the second fixing groove, the pressure plate side convex is arranged on the side surface of the front pressure plate body, and the pressure plate side convex presses on the pressure plate groove.
[0010] The above-mentioned wire clamp for handling overheating of the cable terminal drain plate under energized state, the pressure plate fastening shaft includes an abutment end, a threaded shaft, and an adjustment handle. The threaded shaft is screwed into the fastening threaded hole, the abutment end is arranged below the threaded shaft, the abutment end is inserted into the first fixed groove or the second fixed groove, the adjustment handle is arranged above the threaded shaft and is used to rotate the threaded shaft. The pressure plate fastening shafts are provided with three, which are used in conjunction with the front pressure plate, the rear pressure plate, and the side pressure plate respectively.
[0011] The above-mentioned wire clamp used for handling overheating of the cable terminal drain plate in the energized state, the second fixing groove is provided with a through hole with an internal thread connected to the side of the front pressure plate body, the through hole is arranged on the opposite side of the pressure plate side convex, and a fixing bolt is arranged in the through hole, and the fixing bolt is pressed against the abutting end.
[0012] In the above-mentioned wire clamp for handling overheating of the cable terminal drain plate in a live state, the width of the front plate is smaller than the width of the front pressure plate, and the width of the rear plate is smaller than the width of the rear pressure plate.
[0013] The above-mentioned wire clamp used for handling overheating of the cable terminal drain plate in a live state has electrical grease arranged between the pressing plate protrusion and the pressing plate groove.
[0014] The above-mentioned wire clamp used for handling overheating of the cable terminal drain plate in a live state, the wire clamp body and the pressure plate fastening shaft are made of insulating materials, and the drain plate pressure plate is made of conductive materials.
[0015] The beneficial effect of the wire clamp used for handling overheating of the cable terminal drain plate under live conditions of the present invention is that compared with the prior art which focuses on preventing heating defects of the cable terminal joints during the construction stage, the wire clamp of the present invention focuses on handling heating defects of the cable terminal joints by live operations when the cable is running live, thereby improving the reliability of power supply.
[0016] By using the front pressure plate and the rear pressure plate to fit and connect with the joint drain plate and the cable terminal joint drain plate respectively, and connecting the front pressure plate and the rear pressure plate through the side pressure plate, a passage between the joint drain plate and the cable terminal joint drain plate is formed, and the structure can be processed while ensuring power supply.
[0017] For cable terminal joints with overheating defects, installing the wire clamp designed by the present invention can achieve two effects. First, the cable joint drain plate and the wire joint drain plate are compressed. Second, the front pressure plate, the rear pressure plate, and the side pressure plates are closely connected to achieve the purpose of current diversion. Through the above two operations, the overheating problem of the cable terminal joint can be solved. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the wire clamp body of the present invention; Figure 3 It is a schematic diagram of the structure of the side pressure plate of the present invention; Figure 4 This is a schematic diagram of the front pressing plate structure of the present invention; Figure 5 This is a schematic diagram of the structure of the clamping plate fastening shaft of the present invention.
[0019] Explanation of the reference numerals: wire clamp body 10, front plate 11, rear plate 12, side plate 13, drain plate pressure plate 20, front pressure plate 21, front pressure plate body 211, second fixing groove 212, cable terminal fixing hole 213, pressure plate side protrusion 214, fixing bolt 215, side pressure plate 22, side pressure plate body 221, first fixing groove 222, pressure plate groove 223, rear pressure plate 23, pressure plate fastening shaft 30, abutment end 31, threaded shaft 32, adjustment handle 33, cylindrical shaft 34, fastening threaded hole 40. DETAILED DESCRIPTION
[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is described below in conjunction with specific implementation methods and drawings.
[0021] The cable terminal joint is at the cable terminal tower, where the cable head drainage plate and the conductor joint drainage plate are fixed together by bolts to achieve the purpose of drainage. Due to different process quality and later operating conditions, the current carrying capacity of the joint is different. When the load current exceeds the current carrying capacity of the joint, the joint will overheat. Since the conductor resistance increases with the temperature, when the load current remains unchanged, the temperature of the hot spot increases with the increase of resistance, and the resistance and temperature form a positive feedback relationship. As time goes by, the temperature of the joint rises rapidly in a short period of time. If not handled in time, it will eventually burn the cable joint and cause a disconnection accident.
[0022] The cable terminal joint usually fixes the cable terminal drainage plate and the wire drainage plate with bolts to achieve the purpose of drainage. In order to solve the problem that the bolts are prone to loosening and cause overheating defects in the joint, this solution provides a cable terminal joint clamp, which can be installed without power outages. The problem of joint overheating can be solved without power outages for maintenance, which effectively ensures the reliability of power supply.
[0023] The wire clamp provided in this patent scheme mainly includes three parts, the wire clamp body, the drain plate pressure plate (including the front pressure plate, the rear pressure plate, and the side pressure plate), and the pressure plate fastening shaft (including the front pressure plate rotating shaft, the rear pressure plate rotating shaft, and the side pressure plate rotating shaft). The wire clamp is in the shape of a "Kuang" as a whole. After the cable connector is fixed by rotating the pressure plate rotating shaft, two effects can be achieved. One is to tighten the cable connector drain plate and the wire connector drain plate, and the other is to closely connect the front pressure plate, the rear pressure plate, and the side pressure plate to achieve the purpose of current diversion. Through the above two operations, the overheating problem of the cable terminal connector can be solved.
[0024] Example 1 like Figure 1 and Figure 2 As shown, a wire clamp for handling overheating of a cable terminal drain plate under power-on condition comprises a wire clamp body 10, a drain plate pressing plate 20, and a pressing plate fastening shaft 30.
[0025] The wire clamp body includes a front plate 11, a rear plate 12, and a side plate 13. The front plate is parallel to the rear plate, and the front plate and the rear plate are vertically arranged on the same side of the side plate. The front plate, the rear plate, and the side plate are respectively provided with fastening threaded holes 40.
[0026] The main body of the wire clamp is in the shape of a "Kuang" and is the mechanical bearing body of the entire wire clamp. On the premise of meeting the mechanical requirements, the shapes of the three structural surfaces of the main body are optimized to reduce weight, save materials and reduce costs. There are three threaded holes on the three surfaces, and three pressure plates are inserted to tighten the shaft for rotation.
[0027] The drainage plate pressure plate is arranged inside the wire clamp body. After the pressure plate fastening shaft is screwed through the fastening threaded hole, it is pressed on the drainage plate pressure plate. The drainage plate pressure plate includes a front pressure plate 21, a side pressure plate 22, and a rear pressure plate 23. The front pressure plate fits the joint drainage plate, and the rear pressure plate fits the cable terminal joint drainage plate. The same side of the side pressure plate abuts and connects the front pressure plate and the rear pressure plate.
[0028] To ensure safety in use, the wire clamp body and the pressure plate fastening shaft may be made of insulating materials, and the drainage plate pressure plate may be made of conductive materials.
[0029] To ensure that the joint drain plate and the cable terminal joint drain plate are easy to install, the width of the front plate is smaller than the width of the front pressure plate, and the width of the rear plate is smaller than the width of the rear pressure plate.
[0030] like Figure 3 As shown, the side pressure plate includes a side pressure plate body 221, a first fixing groove 222, and a pressure plate groove 223. The first fixing groove is annular and is arranged in the middle of the side pressure plate body. The pressure plate fastening shaft is pressed against the first fixing groove. The pressure plate groove is long and is arranged on the surface of the side pressure plate body where the front pressure plate and the rear pressure plate abut against the side pressure plate. The cross section of the pressure plate groove is semicircular.
[0031] like Figure 4 As shown, the front pressure plate has the same structure as the rear pressure plate, the front pressure plate comprises a front pressure plate body 211, a second fixing groove 212, a cable terminal fixing hole 213, and a pressure plate side convexity 214, the second fixing groove is arranged in the middle position of the front pressure plate body, the pressure plate fastening shaft abuts in the second fixing groove, the cable terminal fixing hole is arranged on the front pressure plate body on the side of the second fixing groove, the pressure plate side convexity is arranged on the side surface of the front pressure plate body, the pressure plate side convexity is pressed on the pressure plate groove, and the pressure plate side convexity has a semicircular cross-section.
[0032] When the wire clamp is used, the groove and the protrusion fit tightly together, constraining each other to only allow straight line movement in a fixed posture.
[0033] The cable terminal fixing holes are penetrating arc holes, which are symmetrically distributed on both sides of the first fixing groove. The size of the arc holes is relatively large to meet the needs of cable terminal connectors with different bolt spacings.
[0034] The front pressing plate and the rear pressing plate are symmetrically arranged on both sides of the side pressing plate, and the front plate and the rear plate are symmetrically arranged on both sides of the side plate.
[0035] Example 2 like Figure 5 As shown, the pressure plate fastening shaft includes an abutment end 31, a threaded shaft 32, and an adjusting handle 33. The threaded shaft is screwed into the fastening threaded hole, the abutment end is arranged below the threaded shaft, the abutment end is inserted into the first fixed groove or the second fixed groove, and the adjusting handle is arranged above the threaded shaft for rotating the threaded shaft. There are three pressure plate fastening shafts, which are used in conjunction with the front pressure plate, the rear pressure plate, and the side pressure plates respectively.
[0036] Specifically, the pressure plate fastening shaft includes a front pressure plate rotating shaft, a rear pressure plate rotating shaft, and a side pressure plate rotating shaft. The three have similar structures. The cross-section of the tail end is an equilateral hexagon as an adjustment handle, the cross-section of the shaft body is circular and has threads, and the tail end is an equilateral hexagon to facilitate the use of a wrench to adjust the distance between the three pressure plates before operation.
[0037] There is a cylindrical shaft 34 passing through the tail end of the clamping plate fastening shaft, which can be rotated within a 90° angle range by using an insulating operating rod for live operation in conjunction with a universal sleeve head with a notch. By rotating the clamping plate fastening shaft, the front clamping plate, the rear clamping plate, and the side clamping plate can be squeezed to move linearly. The top cross section of the clamping plate shaft is circular, and the top has a semicircular groove throughout the entire circle.
[0038] Example 3 like Figure 3 As shown, in order to ensure the connection strength between the clamping plate fastening shaft and the front clamping plate and the rear clamping plate, a through hole with an internal thread connected to the side edge of the front clamping plate body is provided in the second fixing groove, and the through hole is provided on the opposite side of the clamping plate side protrusion, and a fixing bolt 215 is provided in the through hole, and the fixing bolt is pressed in the semicircular groove on the abutting end. Similarly, fixing bolts can also be provided on the side clamping plates.
[0039] Example 4 A wire clamp used to handle overheating of the cable terminal drain plate under power-on state. When in use, first rotate the side pressure plate to tighten the shaft, and slightly fit the groove of the side pressure plate with the protrusions of the front and rear pressure plates. By rotating the front and rear pressure plate shafts, the front and rear pressure plates are adjusted to the appropriate position. The operator uses an insulating operating rod for live operation to hang the wire clamp on the cable terminal connector. Since the insulating operating rod is equipped with a universal socket head with a notch, the front and rear pressure plate shafts can be rotated within a 90° angle range, so that the front and rear pressure plates move linearly relative to each other, and fit tightly to the wire connector drain plate and the cable terminal drain plate respectively. The side pressure plate's tightening shaft is rotated again by the insulating operating rod, so that the side pressure plate and the front and rear pressure plates fit tightly. Before performing the above operations, apply electrical grease to the front, rear and side pressure plates to ensure the conductive performance after fitting and connection.
[0040] The above embodiments are only for illustrating the inventive concept and features of the present invention, and their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made based on the essence of the content of the present invention should be included in the protection scope of the present invention.
Claims
1. A wire clamp for handling overheating of a cable terminal drain plate under power supply, characterized in that: It includes a wire clamp body, a drain plate pressure plate, and a pressure plate fastening shaft. A fastening threaded hole is provided on the wire clamp body. After the pressure plate fastening shaft is screwed through the fastening threaded hole, it is pressed against the drain plate pressure plate. The drain plate pressure plate is arranged on the inner side of the wire clamp body. The drain plate pressure plate includes a front pressure plate, a side pressure plate, and a rear pressure plate. The front pressure plate is attached to the connector drain plate, and the rear pressure plate is attached to the cable terminal connector drain plate. The same side of the side pressure plate abuts and connects the front pressure plate and the rear pressure plate.
2. The wire clamp for handling overheating of the cable terminal drain plate under power-on condition according to claim 1 is characterized in that: The wire clamp body includes a front plate, a rear plate, and a side plate. The front plate is parallel to the rear plate. The front plate and the rear plate are vertically arranged on the same side of the side plate. The front plate, the rear plate, and the side plates are respectively provided with the fastening threaded holes.
3. The wire clamp for handling overheating of the cable terminal drain plate under power-on state according to claim 2 is characterized in that: The side pressure plate includes a side pressure plate body, a first fixed groove, and a pressure plate groove. The first fixed groove is annular and is arranged in the middle position of the side pressure plate body. The pressure plate fastening shaft is pressed against the first fixed groove. The pressure plate groove is long and is arranged on the surface of the side pressure plate body where the front pressure plate, the rear pressure plate and the side pressure plate abut against each other.
4. The wire clamp for handling overheating of the cable terminal drain plate under power-on state according to claim 3 is characterized in that: The front pressure plate has the same structure as the rear pressure plate, and the front pressure plate includes a front pressure plate body, a second fixing groove, a cable terminal fixing hole, and a pressure plate side convexity. The second fixing groove is arranged in the middle position of the front pressure plate body, the pressure plate fastening shaft abuts against the second fixing groove, the cable terminal fixing hole is arranged on the front pressure plate body on the side of the second fixing groove, the pressure plate side convexity is arranged on the side surface of the front pressure plate body, and the pressure plate side convexity presses against the pressure plate groove.
5. The wire clamp for handling overheating of the cable terminal drain plate under power-on state according to claim 4 is characterized in that: The pressure plate fastening shaft includes an abutment end, a threaded shaft, and an adjustment handle. The threaded shaft is screwed into the fastening threaded hole, the abutment end is arranged below the threaded shaft, the abutment end is inserted into the first fixed groove or the second fixed groove, and the adjustment handle is arranged above the threaded shaft for rotating the threaded shaft. There are three pressure plate fastening shafts, which are respectively used in conjunction with the front pressure plate, the rear pressure plate, and the side pressure plates.
6. The wire clamp for handling overheating of the cable terminal drain plate under energized state according to claim 5 is characterized in that: A through hole with an internal thread connected to the side of the front pressure plate body is provided in the second fixing groove, the through hole is provided on the opposite side of the pressure plate side convexity, a fixing bolt is provided in the through hole, and the fixing bolt is pressed against the abutting end head.
7. The wire clamp for handling overheating of the cable terminal drain plate under power-on state according to claim 5 is characterized in that: The width of the front plate is smaller than the width of the front pressing plate, and the width of the rear plate is smaller than the width of the rear pressing plate.
8. The wire clamp for handling overheating of the cable terminal drain plate under power-on state according to claim 3 is characterized in that: Electrical grease is arranged between the pressing plate protrusion and the pressing plate groove.
9. The wire clamp for handling overheating of the cable terminal drain plate under energized state according to claim 1, characterized in that: The wire clamp body and the pressure plate fastening shaft are made of insulating materials, and the guide plate pressure plate is made of conductive material.