500kV transformer station cable erection clamp
By designing an adjustable V-groove plate and a cushioned layer structure for the cable laying clamp, the problem of limited compatibility of traditional clamps is solved, enabling convenient fixing and efficient installation of cables of various specifications, and improving the safety and stability of the cables.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-16
- Publication Date
- 2026-04-10
AI Technical Summary
The existing cable installation clamps for 500kV substations cannot meet the fixing requirements of cables of various specifications, especially the size variation of large cross-section cables of 200-400mm. The traditional V-groove structure cannot meet the fixing of cables with large-scale continuous size changes, and the operation is cumbersome and inefficient.
A cable laying clamp including a vertical cylinder, a screwing component, and a clamping component was designed. The position of the second V-shaped groove plate can be adjusted by screwing the component, so that the distance between the first and second V-shaped groove plates can be flexibly adjusted. Combined with the soft pad layer and sealed bearing, the versatility and convenience of the clamp are improved.
It enables flexible adaptation to various cable specifications, simplifies the installation and disassembly process, reduces labor and time costs, improves work efficiency, reduces the risk of cable wear, and enhances the reliability and safety of cable operation.
Smart Images
Figure CN224110783U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to cable erection technical field especially relates to a 500kV transformer substation cable erection fixture. BACKGROUND
[0002] The 500kV transformer substation cable erection fixture plays a key role in fixing the cable after the cable laying and installation are completed, and its role is crucial. From the perspective of ensuring the safe and stable operation of the transformer substation, the cable clamp can effectively disperse the weight of the cable itself and the mechanical stress generated by thermal expansion and cold contraction to each fixing point, thereby preventing the cable from unnecessary movement due to external forces or its own gravity, and further avoiding mechanical damage to the cable. At the key parts of the cable terminal, joint or turning, rigid fixation is usually set adjacent to the cable to ensure the stability of these positions. Especially when laying the cable vertically or on a slope, at least two rigid fixations are usually set on the higher side to ensure the stability of the cable.
[0003] However, the cable erection clamps on the market generally adopt the traditional V-shaped groove structure, which has obvious limitations in design and can only adapt to 3-5 fixed specifications of cables. For 500kV transformer substations, the cable specifications are diverse, especially the size of 200-400mm large-section cables changes continuously, and the traditional V-shaped groove structure clamp cannot meet the cable fixing requirements of such a large range and continuous size change. In order to meet the actual needs of 500kV transformer substation cable erection, an electric cable erection clamp that can adapt to a variety of specifications of cables in a larger range while taking into account the convenience of cable disassembly, repair and maintenance on the erection clamp is urgently needed. In view of the above problems, the existing technology needs to be improved. UTILITY MODEL CONTENTS
[0004] The utility model aims at solving the shortcomings in the prior art and provides a 500kV transformer substation cable erection fixture.
[0005] The utility model discloses a 500kV substation cable erecting clamp, main component, this main component includes the vertical cylinder and sets up the installation component at the vertical cylinder bottom, and this installation component is used for fixing the vertical cylinder in target area, screwing component, this screwing component sets up at the top of vertical cylinder, and including twist bar and screw rod, the upper end of twist bar is out of the vertical cylinder, the top of screw rod is fixedly connected with the bottom of twist bar and is located in the vertical cylinder, and the screw rod is connected with the sliding sleeve in the thread, and the sliding sleeve sets up in the vertical cylinder, clamping component, this clamping component includes the first V -shaped groove board fixed on the surface of vertical cylinder and the second V -shaped groove board fixed on one side of sliding sleeve, the first V -shaped groove board sets up first soft pad layer on the side towards the second V -shaped groove board, the second V -shaped groove board sets up second soft pad layer on the side towards the first V -shaped groove board, and the first soft pad layer and the second soft pad layer are used to hold the cable to be erected.
[0006] Further, the top of the vertical cylinder is provided with a sealing bearing, the upper end of the screw rod is fixedly connected with the twist rod through the sealing bearing, and the sealing bearing is used to avoid external foreign matters from entering the vertical cylinder.
[0007] More specifically, the surface of the sliding sleeve is fixedly connected with a limiting block, the limiting block is vertically slidably connected with the inner wall of the vertical cylinder, and is used to limit the vertical movement position of the sliding sleeve.
[0008] More preferably, a bellows is arranged between the second V-shaped groove plate and the sliding sleeve, both ends of the bellows are fixedly connected with the upper and lower inner walls of the vertical cylinder, the sliding sleeve is sleeved on the surface of the bellows, and the bellows is used to avoid external foreign matters from entering the vertical cylinder.
[0009] More preferably, the first soft pad layer and the second soft pad layer are both made of rubber material, the rubber material has elasticity, and is used to provide buffer protection when clamping the cable.
[0010] Specifically, the installation component includes a supporting plate fixed on the bottom of the vertical cylinder, and the supporting plate is provided with bolts for fixing the supporting plate on the target area.
[0011] More specifically, the supporting plate is in a circular structure, and the bottom of the supporting plate is provided with a plurality of bolt holes uniformly distributed in the circumferential direction, and the bolts pass through the bolt holes to fix the supporting plate on the target area.
[0012] Further, the vertical cylinder is in a cylindrical structure, and the screw rod is located at the central axis position of the vertical cylinder.
[0013] Still further, the upper end of the twist rod is provided with anti-skid lines, and the anti-skid lines are used to increase the friction between the hand and the twist rod.
[0014] Still further, the limiting block is integrally formed with the sliding sleeve.
[0015] Compared with the prior art, the utility model has following beneficial effects: through setting up the screwing assembly to adjust the position of second V -shaped groove board, the interval between first V -shaped groove board and second V -shaped groove board can be flexibly adjustable. The design innovation makes the cable erection clamp can effectively adapt to multiple specifications of cable, fundamentally solves the limitation problem that cable erection clamp in prior art can only adapt to a few specifications of cable, greatly improves the versatility and application range of clamp.
[0016] In addition, the cable clamp of the utility model is more convenient to operate, only needs to simply screw the screw rod, can easily realize the lifting adjustment of second V -shaped groove board, makes the installation, dismounting and daily overhaul of cable become more quickly and efficiently. Compared with the cumbersome operation mode of traditional clamp, the utility model undoubtedly greatly saves manpower and time cost, improves work efficiency.
[0017] Further, in order to improve the safety of cable erection, the utility model still specially sets up first soft pad layer and second soft pad layer. These soft pad layers can effectively reduce the direct friction and hard contact between clamp and cable sheath, thereby significantly reducing the wear and damage risk of cable sheath. Meanwhile, the elastic property of soft pad layer also allows the cable to be able to carry out small range thermal expansion and contraction in the process of being clamped, avoids the stress caused by temperature change to cause damage to cable, further improves the reliability and safety of cable operation, provides powerful guarantee for the safe and stable operation of 500kV substation cable. BRIEF DESCRIPTION OF DRAWINGS
[0018] Fig. 1 It is overall structure schematic diagram of the utility model;
[0019] Fig. 2 It is internal structure schematic diagram of the utility model vertical cylinder;
[0020] Fig. 3 It is structure schematic diagram of the utility model corrugated pipe and second V -shaped groove board connection.
[0021] In the drawing: 1, main assembly;11, vertical cylinder;111, sealing bearing;12, support plate;121, bolt;2, screwing assembly;21, screw rod;211, threaded rod;22, sliding sleeve;221, limit block;3, clamping assembly;31, first V -shaped groove board;311, first soft pad layer;32, second V -shaped groove board;321, second soft pad layer;33, corrugated pipe. DETAILED DESCRIPTION
[0022] The following description is used to disclose the utility model so that those skilled in the art can realize the utility model. The preferred embodiments in the following description are only as examples, and other obvious variants can be thought of by those skilled in the art.
[0023] In the field of power engineering, especially in the construction and maintenance of 500kV substations, reliable cable fixing is a crucial link in ensuring the safe and stable operation of the power system. Early cable laying clamps were relatively simple in design, mainly employing fixed-size structures to achieve initial cable fixation. However, with the increasing complexity of power systems and the diversification of cable specifications, the limitations of these traditional clamps have become increasingly apparent. Particularly in 500kV substations, the diameters of the cables to be laid range widely, from thin control cables to thick main cables, with significant differences in specifications. Traditional fixed-size clamps often only fit a few cable specifications, failing to effectively fix cables exceeding their compatibility range. To solve this problem, frequent replacement of clamps with different specifications is required, which not only increases construction costs and extends the construction period but also, in emergency situations, may affect the safe operation of the power system due to the lack of suitable clamps. Furthermore, the installation and removal of traditional clamps are cumbersome and inefficient, especially when working at heights or in confined spaces, further increasing the operational difficulty and safety risks. To address the specific needs of cable laying in 500kV substations, a cable laying clamp that is flexible, adaptable to various cable specifications, easy to operate, and safe and reliable has been proposed. The design concept of this clamp is to break free from the constraints of traditional fixed dimensions, achieving compatibility with cables of different diameters. Simultaneously, the clamp's structure is optimized to improve operational convenience and safety, thereby meeting the higher requirements of modern power systems for cable laying technology.
[0024] like Figs. 1 to 3 The cable erection clamp for a 500kV substation shown includes:
[0025] The main component 1 includes a vertical cylinder 11 and a mounting component disposed at the bottom of the vertical cylinder 11. The mounting component is used to fix the vertical cylinder 11 to the target area.
[0026] Tightening assembly 2 is located at the top of the vertical cylinder 11 and includes a tightening rod 21 and a threaded rod 211. The upper end of the tightening rod 21 extends out of the vertical cylinder 11, and the top end of the threaded rod 211 is fixedly connected to the bottom end of the tightening rod 21 and located inside the vertical cylinder 11. The threaded rod 211 is threadedly connected to a sliding sleeve 22, which is located inside the vertical cylinder 11.
[0027] The clamping assembly 3 includes a first V-shaped groove plate 31 fixed to the surface of the vertical cylinder 11 and a second V-shaped groove plate 32 fixed to one side of the sliding sleeve 22. A first soft pad layer 311 is provided on the side of the first V-shaped groove plate 31 facing the second V-shaped groove plate 32, and a second soft pad layer 321 is provided on the side of the second V-shaped groove plate 32 facing the first V-shaped groove plate 31. The first soft pad layer 311 and the second soft pad layer 321 are used to clamp the cable to be installed.
[0028] In implementation, the surface of the vertical cylinder 11 is provided with an opening, which facilitates the insertion of the end of the second V-shaped groove plate 32 into the interior of the vertical cylinder 11 and the connection with the sliding sleeve 22. First, the main body assembly 1 is fixed at the target position such as a cable bridge or a support through the installation assembly. Then, the cable to be erected is placed on the first soft pad layer 311 of the first V-shaped groove plate 31. At this time, the second V-shaped groove plate 32 is in a lifted state, and the V-shaped groove opening is opened to facilitate the placement of the cable. Next, the operator rotates the twisting rod 21 of the twisting assembly 2. With the rotation of the twisting rod 21, the threaded rod 211 drives the sliding sleeve 22 to move downward, and the second V-shaped groove plate 32 fixed on the sliding sleeve 22 also descends, gradually approaching the first V-shaped groove plate 31. When the second soft pad layer 321 of the second V-shaped groove plate 32 contacts the upper surface of the cable, the twisting rod 21 is continuously rotated, and the second V-shaped groove plate 32 is further pressed downward until the first soft pad layer 311 and the second soft pad layer 321 jointly act to firmly clamp the cable in the V-shaped groove opening. In this process, the operator can flexibly adjust the rotation angle of the twisting rod 21 according to the actual diameter of the cable and the clamping requirement, control the size of the clamping force, and ensure that the cable can be reliably fixed and will not be damaged due to excessive clamping force. After the clamping of the cable is completed, subsequent cable laying and fixing work can be carried out. When the cable needs to be repaired or replaced, the twisting rod 21 is only needed to be reversely rotated to lift the second V-shaped groove plate 32, and the V-shaped groove opening is opened, so that the cable can be conveniently taken out, and the operation is simple and quick.
[0029] As an embodiment of the utility model, the top of the vertical cylinder 11 is provided with a sealing bearing 111, the upper end of the threaded rod 211 is fixedly connected with the twisting rod 21 through the sealing bearing 111, and the sealing bearing 111 is used for avoiding the entry of external foreign matters into the vertical cylinder 11.
[0030] As an embodiment of the utility model, the top of the vertical cylinder 11 is provided with a sealing bearing 111, the upper end of the threaded rod 211 is fixedly connected with the twisting rod 21 through the sealing bearing 111, and the sealing bearing 111 is used for avoiding the entry of external foreign matters into the vertical cylinder 11.
[0031] As an embodiment of the utility model, corrugated pipe 33 is arranged between second V-shaped groove plate 32 and sliding sleeve 22, both ends of corrugated pipe 33 are fixedly connected with the upper and lower inner walls of vertical cylinder 11 respectively, sliding sleeve 22 is sleeved on the surface of corrugated pipe 33, and corrugated pipe 33 is used to avoid that foreign matters enter into the inside of vertical cylinder 11.
[0032] Corrugated pipe 33 is a tubular elastic element with special corrugated structure.The core function is that the expansion and bending of corrugated structure are utilized to effectively close the gap between second V-shaped groove plate 32 and sliding sleeve 22 while ensuring that second V-shaped groove plate 32 can move vertically along with sliding sleeve 22, so that dust, rain, insects and other sundries from outside can be prevented from invading the inside space of vertical cylinder 11.The adoption of corrugated pipe 33 builds another important protective barrier for the precision motion mechanism inside vertical cylinder 11, and realizes double sealing protection in cooperation with sealing bearing 111.
[0033] As an embodiment of the utility model, first soft pad layer 311 and second soft pad layer 321 are made of rubber material, and the rubber material has elasticity and is used to provide buffer protection when clamping the cable.
[0034] By making first soft pad layer 311 and second soft pad layer 321 of rubber material, the 500kV substation cable erecting clamp has better cable protection capability.The rubber soft pad layer effectively provides buffer protection, increases the contact area and improves the anti-skid effect, maximally reduces the damage such as abrasion and bruise that the cable sheath may suffer in the clamping process, ensures the safe and reliable operation of the cable, and prolongs the service life of the cable.Compared with the soft pad layer made of hard material or material with poor buffer performance, the clamp of the embodiment is significantly improved in cable protection performance.
[0035] As an embodiment of the utility model, the mounting assembly comprises a supporting plate 12 fixed at the bottom of vertical cylinder 11, and the supporting plate 12 is provided with a bolt 121 for fixing the supporting plate 12 in a target area.
[0036] As an embodiment of the utility model, the supporting plate 12 is in a circular structure, the bottom of the supporting plate 12 is provided with a plurality of bolt holes uniformly distributed in the circumferential direction, and the bolt 121 passes through the bolt hole to fix the supporting plate 12 in the target area.
[0037] The 500kV substation cable erecting clamp has more excellent installation stability and bearing capacity by designing the supporting plate 12 as a circular structure and arranging the bolt holes uniformly at the bottom of the supporting plate 12. The circular supporting plate 12 and the uniformly distributed bolt holes work together to make the force of the clamp more balanced during fixing, improve the strength and deformation resistance of the supporting plate 12, and thus ensure the stability of the whole clamp and provide a more solid foundation for the safe and reliable erection of the cable. Compared with the clamp with a non-circular supporting plate or unevenly distributed bolt holes, the clamp of the embodiment is significantly improved in terms of installation stability and bearing capacity.
[0038] As an embodiment of the utility model, the vertical cylinder 11 is a cylindrical structure, and the threaded rod 211 is located at the central axis position of the vertical cylinder 11.
[0039] As an embodiment of the utility model, the upper end of the screw rod 21 is provided with anti-skid lines, and the anti-skid lines are used to increase the friction between the hand and the screw rod 21.
[0040] By arranging the anti-skid lines at the upper end of the screw rod 21, the 500kV substation cable erecting clamp has more excellent operation convenience and user friendliness. The anti-skid lines effectively increase the friction between the hand and the screw rod 21, so that the operator can twist the screw rod 21 more easily and conveniently, and it is not easy to slip, especially in the working conditions of humidity, oil stains or wearing gloves, the anti-skid lines have more significant friction-increasing effect, which improves the operation convenience and efficiency and reduces the risk of operation errors. Compared with the cable clamp with a smooth surface at the upper end of the screw rod 21, the clamp of the embodiment is significantly improved in terms of operation convenience and user experience.
[0041] As an embodiment of the utility model, the limiting block 221 is integrally formed with the sliding sleeve 22.
[0042] The utility model works as follows:
[0043] First, take out the main assembly 1, place the supporting plate 12 fixed below the main assembly 1 in the target area, and then use the bolt 121 to complete the fixing work of the supporting plate 12 in the target area;
[0044] Then, place the cable to be erected at the first soft pad layer 311 on the first V-shaped groove plate 31 in the clamping assembly 3, and then use the twisting assembly 2 to rotate the screw rod 21 by twisting the screw rod 21, so that the screw rod 21 drives the threaded rod 211 to rotate in the vertical cylinder 11, and then the sliding sleeve 22 and the limiting block 221 connected with the outer side of the threaded rod 211 move vertically downward in the vertical cylinder 11, at this time, the second V-shaped groove plate 32 fixed on one side of the sliding sleeve 22 can be moved downward synchronously until the second soft pad layer 321 cooperates with the first soft pad layer 311 to complete the clamping work of the erected cable;
[0045] Through the design, different specifications of cable can be clamped, and the cable can be quickly disassembled at the first V-shaped groove plate 31 and the second V-shaped groove plate 32, the first soft pad layer 311 and the second soft pad layer 321 can reduce the external wear of the cable, and the soft first soft pad layer 311 and the second soft pad layer 321 can also allow the cable to expand and contract within a range during clamping;
[0046] In particular, the sealing bearing 111 at the top of the vertical cylinder 11 not only makes the threaded rod 21 rotate smoothly in the vertical cylinder 11, but also effectively prevents external foreign matters from entering the vertical cylinder 11.
[0047] In particular, the corrugated pipe 33 at the connection between the second V-shaped groove plate 32 and the vertical cylinder 11 can contract or expand with the vertical movement of the second V-shaped groove plate 32, and the corrugated pipe 33 and the sealing bearing 111 can also prevent external foreign matters in the environment from entering the vertical cylinder 11 and causing blockage at the gap between the threaded rod 211 and the sliding sleeve 22.
[0048] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model can have various changes and improvements, and these changes and improvements fall within the scope of the utility model claimed, and the protection scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A 500 kV substation cable erection clamp characterized by, The utility model provides a kind of cable fixing device, including: Main body assembly (1), the main body assembly (1) includes vertical cylinder (11) and installation assembly for being arranged at the bottom of vertical cylinder (11), the installation assembly is used to fix vertical cylinder (11) in target area; Twist assembly (2), the twist assembly (2) is arranged at the top of the vertical cylinder (11), and includes twist rod (21) and threaded rod (211), the upper end of the twist rod (21) is out of the vertical cylinder (11), the top end of the threaded rod (211) is fixedly connected with the bottom end of the twist rod (21) and is located in the vertical cylinder (11), the threaded rod (211) is threadedly connected with sliding sleeve (22), and the sliding sleeve (22) is arranged in the vertical cylinder (11); Clamping assembly (3), the clamping assembly (3) includes first V-shaped groove plate (31) fixed on the surface of the vertical cylinder (11) and second V-shaped groove plate (32) fixed on one side of the sliding sleeve (22), the first V-shaped groove plate (31) is provided with first soft pad layer (311) on the side towards the second V-shaped groove plate (32), the second V-shaped groove plate (32) is provided with second soft pad layer (321) on the side towards the first V-shaped groove plate (31), and the first soft pad layer (311) and the second soft pad layer (321) are used for clamping the cable to be erected.
2. The 500 kV substation cable erection clamp of claim 1, wherein, The top of the vertical cylinder (11) is provided with a sealing bearing (111), and the upper end of the threaded rod (211) is fixedly connected with the twist rod (21) through the sealing bearing (111), so as to avoid external foreign matters from entering the vertical cylinder (11).
3. The 500 kV substation cable erection clamp of claim 1, wherein, The surface of the sliding sleeve (22) is fixedly connected with a limiting block (221), and the limiting block (221) is vertically slidably connected with the inner wall of the vertical cylinder (11), so as to limit the vertical movement position of the sliding sleeve (22).
4. The 500 kV substation cable erection clamp of claim 1, wherein, A bellows (33) is arranged between the second V-shaped groove plate (32) and the sliding sleeve (22), both ends of the bellows (33) are fixedly connected with the upper and lower inner walls of the vertical cylinder (11), the sliding sleeve (22) is sleeved on the surface of the bellows (33), and the bellows (33) is used to avoid external foreign matters from entering the vertical cylinder (11).
5. The 500 kV substation cable erection clamp of claim 1, wherein, The first soft pad layer (311) and the second soft pad layer (321) are both made of rubber material, and the rubber material has elasticity, so as to provide buffer protection when clamping the cable.
6. The 500 kV substation cable erection clamp of claim 1, wherein, The installation assembly includes a supporting plate (12) fixed at the bottom of the vertical cylinder (11), and the supporting plate (12) is provided with bolts (121) for fixing the supporting plate (12) in the target area.
7. The 500 kV substation cable erection clamp of claim 6, wherein, The supporting plate (12) is in a circular structure, the bottom of the supporting plate (12) is provided with a plurality of bolt holes uniformly distributed in the circumferential direction, and the bolts (121) pass through the bolt holes to fix the supporting plate (12) in the target area.
8. The 500 kV substation cable erection clamp of claim 1, wherein, The vertical cylinder (11) is in a cylindrical structure, and the threaded rod (211) is located at the central axis position of the vertical cylinder (11).
9. The 500 kV substation cable erection clamp of claim 1, wherein, The upper end of the twist rod (21) is provided with anti-skid lines for increasing the friction between the hand and the twist rod (21).
10. The 500 kV substation cable erection clamp of claim 3, wherein, The limiting block (221) is integrally formed with the sliding sleeve (22).