Cable junction box and tower drum

Abstract

The utility model relates to the technical field of wind power generation, in particular to a cable junction box and a tower drum, which comprise a shell box body and a bus conductor, the bus conductor is arranged in the shell box body, a cable penetrates through a cable threading hole of the shell box body to be connected with the bus conductor, and the shell box body is arranged on the tower drum through a sliding mechanism. The sliding mechanism comprises a support part and a sliding assembly, a sliding groove is formed in the support part, one end of the sliding assembly is slidably connected to the sliding groove, and the other end of the sliding assembly is installed on the tower drum. According to the utility model, the support member is connected between the housing box body and the tower drum, when the tower drum shakes, the sliding assembly can be used for sliding connection in the sliding groove, the sliding space is used for counteracting the amplitude generated by shaking, the displacement influence caused by shaking is buffered, the influence of shaking generated by the tower drum on the cable junction box is reduced, and the service life of the cable junction box is prolonged. Therefore, the influence of shaking on the cable junction box is reduced, the risk of burnout of the cable junction box is reduced, and the durability of the cable junction box is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation, in particular to a cable junction box and a tower. Background Art

[0002] The tower is a supporting structure tower commonly used in the field of wind power generation to support wind turbines. It is an important structure for supporting wind turbines. It is mainly used to install and carry power lines, bus ducts, wind turbines, communication antennas and other equipment and cables. The bus duct is a device installed on the tower for power transmission and distribution. It is mainly used to connect various electrical equipment in the distribution system on the tower, such as transformers, junction boxes and load equipment. The bus duct is composed of conductors and insulating materials, has a high current carrying capacity, can effectively transmit electrical energy and reduce energy loss.

[0003] Air-type bus duct is one type of bus duct, which is installed and laid on the inner wall of the tower and uses air as an insulating medium to isolate and protect the conductor. The upper end of the air-type bus duct is connected to the twist cable of the generator set, and the lower end is connected to the power cable of the converter. As a power transmission device between the generator set and the converter, the bus duct is generally connected to the twist cable or cable through a cable junction box at the upper and lower ends of the air-type bus duct.

[0004] In actual use, since some cable junction boxes are installed on the top of the tower, at an installation height of about 100 meters from the ground, the cable junction box and the main bus duct have inconsistent structures, weights, and laying and installation. The top of the tower is easily affected by external forces and is prone to large shaking. Frequent shaking can easily cause the internal bolts of the cable junction box to loosen, or cause displacement between the cable junction box and the main bus duct, or cause deformation and breakage of the connecting parts between the tower, resulting in a decline in the electrical connection function or failure of the electrical connection, which may eventually cause heat and burn the cable junction box.

[0005] In view of the above shortcomings, we need to develop a cable junction box and tower to meet the needs of the majority of users. Utility Model Content

[0006] In view of the above-mentioned problems that the existing cable junction box is easily affected by the shaking of the tower, resulting in loosening and displacement of internal accessories, deformation and fracture of connecting parts, etc., the technical solution adopted by the utility model to solve the technical problems is:

[0007] A cable connection box includes a housing box body for installation at one end of a busbar trunking and a busbar conductor for power transmission. The busbar conductor is installed inside the housing box body, and a cable passes through a cable threading hole of the housing box body and is connected to the busbar conductor. The housing box body is installed on a tower barrel through a sliding mechanism for reducing the influence of shaking. The sliding mechanism includes a bracket member and a sliding component. The bracket member is provided with a sliding groove for reducing the influence of shaking, and one end of the sliding component is slidably connected to the sliding groove, and the other end of the sliding component is installed on the tower barrel.

[0008] Further, the busbar conductor includes at least three phase sequence conductor plates arranged at intervals respectively. The phase sequence conductor plates are provided with a plurality of cable connection holes for cable connection. The cable connection holes are respectively arranged on different phase sequence conductor plates in a horizontally staggered manner.

[0009] Further, the phase sequence conductor plates are arranged in the vertical direction. The phase sequence conductor plates include a first connection part, a second connection part and a third connection part connected in sequence from top to bottom. The cable connection holes are located in the first connection part, and the second connection part extends horizontally in a direction away from the center of the busbar conductor.

[0010] Further, the busbar conductor is installed on the housing box body through at least one insulating phase separation component. The insulating phase separation component includes a phase separation component and a clip frame. The phase separation component includes a plurality of phase separation members connected and arranged in sequence along the length direction of the insulating phase separation component. The phase separation members are used for separating the interval distances between adjacent phase sequence conductor plates. The clip frame is respectively installed at both ends of the phase separation component through fasteners.

[0011] Further, an insulating motor film is sleeved on the surface of the phase sequence conductor plate, and the motor film is made of an insulating material.

[0012] Further, a sealing member is installed at the corresponding position of each cable threading hole of the housing box body. The sealing member can be used for sealing and preventing pollution and fastening the cable. The sealing member is provided with a wire passing hole for the cable to pass through. One side of the sealing member extending out of the housing box body is provided with a screwing limit part convenient for tool screwing.

[0013] Further, the bracket member includes a first connection bracket and a second connection bracket. The first connection bracket is connected to the housing box body through a fastener. The sliding groove is located in the second connection bracket. The second connection bracket extends from one end of the first connection bracket away from the fastener towards the side away from the housing box body. The sliding groove is arranged in the vertical direction.

[0014] Further, the sliding component includes a sliding block for being arranged in the sliding groove and a tower barrel connecting piece for fixedly connecting the tower barrel. Fasteners respectively pass through the sliding block and the sliding groove and are installed on the side of the tower barrel connecting piece away from the tower barrel.

[0015] Further, a shock absorber is further included. A connector assembly for connecting a busbar is installed between the shock absorber and the outer shell box body. The shock absorber is located on the side of the connector assembly close to the tower barrel. The shock absorber includes at least two shock-absorbing rubbers.

[0016] Further, the tower barrel includes a barrel body and a busbar installed on the barrel body. The cable connection box is installed on the busbar.

[0017] The beneficial effects of the present utility model are as follows:

[0018] 1. The present utility model uses a bracket piece to connect between the outer shell box body and the tower barrel. When the tower barrel shakes, the sliding component can be used for sliding connection in the sliding groove, and the amplitude generated by the shake can be offset by using the sliding space, buffering the displacement influence brought by the shake, reducing the influence of the shake generated by the tower barrel on the cable connection box, thereby realizing reducing the influence of the shake on the cable connection box, reducing the risk of the cable connection box being burned out, and improving the durability of the cable connection box.

[0019] 2. The busbar conductors of the present utility model are provided with a plurality of phase sequence conductor plates in a way of staggered intervals. The phase sequence conductor plates are formed by combining a first connection part, a second connection part and a third connection part, integrating and simplifying the structure of the busbar conductors, greatly improving the efficiency of pre-installation and post-maintenance, reducing the structural connection points, thereby reducing the risk of the busbar conductors being burned out. This cable connection box has the advantages of being convenient to replace, easy to maintain, safe and reliable, resistant to the swing of the wind turbine tower barrel, and low cost. Description of the Drawings

[0020] Figure 1 is a perspective view of a cable connection box of the present utility model.

[0021] Figure 2 is a perspective exploded view of a cable connection box of the present utility model.

[0022] Figure 3 is a perspective exploded view of a cable connection box of the present utility model.

[0023] Figure 4 is an internal structure diagram of a cable connection box of the present utility model.

[0024] Figure 5 is Figure 4 the enlarged view A of

[0025] Figure 6A perspective view of the busbar conductor of a cable junction box of the present utility model.

[0026] Figure 7 An exploded perspective view of the sliding mechanism of a cable junction box of the present utility model.

[0027] Figure 8 An exploded perspective view of the insulating phase-separating component of a cable junction box of the present utility model.

[0028] Figure 9 A schematic diagram of a tower barrel of the present utility model. Specific embodiments

[0029] The following will describe in detail the embodiments of the present utility model with reference to the accompanying drawings.

[0030] As Figures 1 to 4 shown, a cable junction box includes a housing box body 100 for installation at one end of a busbar chute and a busbar conductor 200 for power transmission. The busbar conductor 200 is installed inside the housing box body 100. A cable passes through a cable threading hole 11 of the housing box body 100 and is connected to the busbar conductor 200. The housing box body 100 is installed on a tower barrel through a sliding mechanism 300 for reducing the influence of shaking. The sliding mechanism 300 includes a support member 31 and a sliding component 32. The support member 31 is provided with a sliding groove 311 for reducing the influence of shaking. One end of the sliding component 32 is slidably connected to the sliding groove 311, and the other end of the sliding component 32 is installed on the tower barrel.

[0031] Specifically, in some embodiments, the tower barrel is a support structure tower commonly used in the field of wind power generation to support wind turbines. It is an important structure for supporting wind power generation units. A wind turbine and generator blades are installed at the top of the tower barrel. When the generator blades rotate, they drive the wind turbine to achieve the power generation effect. The power of the wind turbine is transmitted to other devices or equipment through cables. The busbar trunking is a device installed on the tower barrel for power transmission and distribution, mainly used to connect various electrical equipment in the power distribution system on the tower barrel. The outer shell box body 100 of the cable connection box is installed at one end of the busbar trunking 82 to protect the internal components for transmitting power. The busbar conductor 200 is a power transmission component installed inside the outer shell box body 100 for respectively connecting the busbar trunking and the wind turbine cable. A cable threading hole 11 is opened at the top of the outer shell box body 100. The cable passes through the cable threading hole 11 and enters the inside of the outer shell box body 100 and is cooperatively connected with the busbar conductor 200 to achieve the basic power transportation function. The outer shell box body 100 can be fastened by several plate parts with self-tapping screws. The several plate parts of the outer shell box body 100 can be made of Q235A high-quality steel plates, formed by cutting, punching, riveting, and bending, and the outer surface is spray-coated. It has high mechanical strength and can play a role in rigidly protecting the interior. A detachable box cover 12 is provided on the side of the outer shell box body 100 away from the side wall of the tower barrel. Users can enter the interior to maintain the busbar conductor 200 by opening the box cover 12.

[0032] The original cable connection box needs to use multiple shock absorbers to be respectively installed on the top and bottom of the cable connection box for connecting to the tower barrel to reduce the vibration impact caused by shaking. In the shaking process during long-term use, some shock absorbers will still have deformation and fracture. After deformation and fracture, the shock absorbers will fail, affecting the user's use. To solve this problem, a sliding mechanism 300 is installed between the outer side of the outer shell box body 100 and the tower barrel. The sliding mechanism 300 includes a support member 31 for connection and installation and a sliding component 32 for slidably connecting to the support member 31. A sliding groove 311 is opened on the side of the support member 31 close to the tower barrel. One end of the sliding component 32 is installed on the tower barrel, and the other end of the sliding component 32 extends into and is cooperatively slidably connected to the sliding groove 311. The sliding component 32 can slide smoothly back and forth along the length direction of the sliding groove 311. When the tower barrel is shaken under the influence of external forces, the outer shell box body 100 and the tower barrel slide in the sliding groove 311 through the sliding component 32 to reduce the impact of shaking on the outer shell box body 100, thereby replacing some of the original shock absorbers and solving problems such as the outer shell box body 100 being prone to loosening, displacement, and connection deformation.

[0033] Such as Figure 6In the cable junction box shown, the busbar conductor 200 includes at least three phase sequence conductor plates 21 which are spaced apart from each other. The phase sequence conductor plates 21 are provided with a plurality of cable connection holes 22 for connecting cables. The cable connection holes 22 are arranged on different phase sequence conductor plates 21 in a horizontally staggered manner.

[0034] Specifically, in some embodiments, the phase sequence conductor plate 21 is a conductive component of the bus conductor 200 for connecting cables of different phase sequences respectively. A screw or bolt can be used to pass through the cable wiring hole 22 to connect one end of the cable to the phase sequence conductor plate 21. A single phase sequence conductor plate 21 can be connected to multiple cables at the same time depending on the number of cable wiring holes 22. The cable wiring holes 22 can be arranged at two or more evenly spaced intervals to meet the requirements of power transmission. When multiple cable wiring holes 22 are used, the cable wiring holes 22 are arranged horizontally in a straight line and are arranged on one side of the phase sequence conductor plate 21 close to the cable, such as Figure 6 As shown, multiple phase sequence conductor plates 100 are arranged in a trapezoidal shape from left to right or from right to left at their respective heights near one end of the cable, so that the cable wiring holes 2 are staggered in horizontal planes at different upper and lower heights, forming a trapezoidal structure with step-by-step staggered and orderly arrangements, which is beneficial to the early installation operation and later inspection and maintenance work.

[0035] Specifically, in some embodiments, the surface of the phase sequence conductor plate 100 may be provided with a nickel plating layer, a copper plating layer and a tin plating layer from the inside to the outside, respectively. The nickel plating layer is used to provide good corrosion resistance and enhance the hardness of the metal, the copper plating layer is used to enhance the conductivity and provide better welding performance, and the tin plating layer is used to further improve the reliability and stability of the connection while enhancing corrosion resistance.

[0036] like Figure 6 A cable junction box is shown, wherein the phase sequence conductor plate 21 is arranged in the vertical direction, and the phase sequence conductor plate 21 includes a first connection part 211, a second connection part 212 and a third connection part 213 which are sequentially connected from top to bottom, the cable connection hole 22 is located in the first connection part 211, and the second connection part 212 extends laterally in a direction away from the center of the bus conductor 200.

[0037] Specifically, in some embodiments, the first connecting portion 211 is provided on the side of the phase sequence conductor plate 21 for connecting the cable. The cable connection holes 22 are arranged horizontally in a straight line and are provided on the side of the first connecting portion 211 close to the cable. Two or more cable connection holes 22 are horizontally and evenly spaced on the first connecting portion 211 to meet the requirements of power transmission. The third connecting portion 213 is provided on the side of the phase sequence conductor plate 21 away from the cable connection holes 22 for installation and fixing the position. The third connecting portion 213 can be installed on the insulating component on the cable connection box to prevent the busbar conductor 200 from conducting electricity to the outer shell of the cable connection box and avoid the risk of electric shock. The first connecting portion 211 and the third connecting portion 213 are arranged with a vertical offset. The first connecting portion 211 is spaced and offset toward the side of the third connecting portion 213 away from the center of the busbar conductor 200. The second connecting portion 212 is horizontally arranged between the first connecting portion 211 and the third connecting portion 213. The second connecting portion 212 extends horizontally from the end of the third connecting portion 213 close to the first connecting portion 211 toward the direction away from the center of the busbar conductor 200, so that when multiple phase sequence conductor plates 21 are arranged vertically, sufficient space can be respectively separated to facilitate the pre-installation of the cable and also facilitate the later inspection and maintenance work.

[0038] Specifically, in some embodiments, the phase sequence conductor plate 21 can be respectively provided with a first conductor plate 24, a second conductor plate 25, a third conductor plate 26, and a fourth conductor plate 27 according to the phase sequence of the connected cables. The first conductor plate 24, the second conductor plate 25, and the third conductor plate 26 can be respectively used to connect the three-phase cables (phase A, phase B, and phase C), and the fourth conductor plate 27 can be used to connect the neutral cable (N line). The second conductor plate 25 and the third conductor plate 26 are arranged at positions close to the center of the busbar conductor, and the first conductor plate 24 and the fourth conductor plate 27 are arranged at positions close to the outside of the busbar conductor. The overall structure is clearly separated, which is easy to install and maintain.

[0039] Specifically, in some embodiments, different surface coating colors can also be used on the first conductor plate 24, the second conductor plate 25, the third conductor plate 26, and the fourth conductor plate 27 respectively to accurately distinguish the connection positions of each phase sequence. Preferably, the first conductor plate 24 can be coated with a yellow coating, the second conductor plate 25 can be coated with a green coating, the third conductor plate 26 can be coated with a red coating, and the fourth conductor plate 27 can be coated with a blue or yellow-green alternating coating to further clarify the cable layout and phase sequence distinction.

[0040] Such as Figure 3 、 Figure 4 and Figure 8A cable junction box as shown, wherein the busbar conductor 200 is mounted on the outer shell box body 100 through at least one insulating phase-separating component 500. The insulating phase-separating component 500 includes a phase-separating component 51 and a clip frame 52. The phase-separating component 51 includes a plurality of phase-separating members 53 connected and arranged in sequence along the length direction of the insulating phase-separating component 500. The phase-separating members 53 are used to separate the spacing between adjacent phase-sequence conductor plates 21. The clip frame 52 is respectively mounted at both ends of the phase-separating component 51 through fasteners.

[0041] Specifically, in some embodiments, the insulating phase-separating component 500 is a protective measure for mounting between the busbar conductor 200 and the outer shell box body 100 to avoid the risk of electric shock caused by the busbar conductor 200 conducting electricity to the outer shell box body 100. The insulating phase-separating component 500 includes a phase-separating component 51 for separating the mounting positions of the phase-sequence conductor plates 21 and a clip frame 52 for assisting in mounting the phase-separating component 51. The phase-separating member 53 is an independent unit for separating the phase-sequence conductor plates 21. A plurality of phase-separating members 53 are arranged end to end in sequence along the length direction of the insulating phase-separating component 500. A longer bolt is used to pass through the clip frame 52 on one side and reach the clip frame 52 on the other side via a plurality of phase-separating members 53 and then locked. The two sets of phase-separating components 51 are symmetrically arranged with the center lines of the clip frames 52 on both sides as the base points. The clamping ends of the phase-separating component 51 all face the direction close to the center of the insulating phase-separating component 500. The arrangement quantity of the phase-separating members 53 corresponds to the arrangement quantity of the phase-sequence conductor plates 21. The phase-separating members 53 are respectively mounted between adjacent phase-sequence conductor plates 21 to stably separate the adjacent phase-sequence conductor plates 21.

[0042] Specifically, in some embodiments, at least two insulating phase-separating components 500 can be arranged at intervals from bottom to top along the length direction of the phase-sequence conductor plates 21. Preferably, three insulating phase-separating components 500 are arranged at intervals in the vertical direction to clamp the busbar conductor 200 more comprehensively and stably.

[0043] As Figure 3 and Figure 6 shown in a cable junction box, a motor film 23 for insulation is sleeved on the surface of the phase-sequence conductor plate 21. The motor film 23 is made of insulating material.

[0044] Specifically, in some embodiments, optionally, the motor film 23 may be made of one of polytetrafluoroethylene (PTFE), polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polyester (PET), or polyimide (PI) as the insulating material. The user can choose one according to the usage environment and conditions to adapt to different working requirements and natures. Preferably, the motor film 23 may be made of polyester (PET). Polyester (PET) has good mechanical strength and stiffness, good wear resistance, is not easily damaged, has stable chemical corrosion resistance, is not easily affected and eroded by the environment, and is easy to process and form, making it suitable for the structure of wrapping the phase sequence conductor plate 21.

[0045] Specifically, in some embodiments, to further avoid contact short - circuit, reduce the risk of burnout, and protect the installation and maintenance personnel, the motor film 23 is a protective sheath layer made of insulating material for isolating external insulation contact. The motor film 23 is sleeved on the outer surfaces of the second connection part 212 and the third connection part 213 of the phase sequence conductor plate 21, preventing adjacent phase sequence conductor plates 21 from being pressed close to each other and causing burnout hazards, and can provide insulation and phase - separation protection. The wrapping thickness of the motor film 23 is relatively thin, having little impact on the overall occupied space and being convenient for users.

[0046] As Figures 1 to 4 shown in a cable junction box, a seal 600 is installed at the corresponding position of each cable through - hole 11 of the outer shell box body 100. The seal 600 can be used for sealing and anti - pollution as well as fastening the cable. The seal 600 is provided with a wire - passing orifice 61 for the cable to pass through, and a screwing limit part 62 convenient for tool screwing is provided on one side of the seal 600 extending out of the outer shell box body 100.

[0047] Specifically, in some embodiments, the seal 600 is a sealing fitting for a cable junction box to prevent impurities such as dust, oil stains, and rainwater from the outside from entering the interior of the cable junction box where the cable passes through. Preferably, the seal 600 is made of nylon PA66 with super toughness and wear resistance. The built-in rubber pad can effectively prevent water, oil, and dust from entering the outer casing 100. The seal 600 has a relatively high sealing protection level. The rubber ring is made of nitrile rubber and has good oil resistance. The bottom of the seal 600 has a rotary thread, which can effectively fasten the cable to the outer casing 100. A wire passing orifice 61 penetrating the top and bottom is provided at the center of the seal 600. A screwing limit portion 62 facilitating tool screwing is provided on the outer side of the seal 600. During use, the seal 600 is installed in the cable threading hole 11 at the top of the cable junction box, and each cable threading hole 11 corresponds to one seal 600. The cable enters the interior of the cable junction box from the outside through the wire passing orifice 61 and is connected to the busbar conductor 200. Preferably, the screwing limit portion 62 can adopt an external hexagon structure, and a hexagon wrench or an adjustable wrench can be used to clamp and turn the screwing limit portion 62, so that the wire passing orifice 61 tightens and clamps the surface of the cable, achieving the sealing effect.

[0048] As Figure 5 and Figure 7 For a cable junction box as shown, the support member 31 includes a first connection support 312 and a second connection support 313. The first connection support 312 is connected to the outer casing 100 through fasteners. The sliding groove 311 is located on the second connection support 313. The second connection support 313 extends from the end of the first connection support 312 away from the fasteners towards the side away from the outer casing 100, and the sliding groove 311 is arranged in the vertical direction.

[0049] Specifically, in some embodiments, the first connection support 312 is a support sub-frame for detachably connecting to the outer casing 100, and the second connection support 313 is a support sub-frame for slidingly connecting to the tower barrel. Multiple screws can be used to install the first connection support 312 on the top of the outer casing 100. One end of the sliding assembly 32 is installed on the tower barrel, and the other end of the sliding assembly 32 is slidably connected to the sliding groove 311. The sliding groove 311 is arranged in the vertical direction in the middle of the second connection support 313. When the tower barrel is shaken under the influence of external forces, the tower barrel drives the sliding assembly 32 to slide up and down in the sliding groove 311, and the sliding range is limited within the sliding groove 311 to eliminate the influence brought by the shaking.

[0050] Specifically, in some embodiments, the first connecting bracket 312 and the second connecting bracket 313 are bent at a right angle, and reinforcing ribs for reinforcement are provided on both sides of the unfolded length of the bracket member 31. With such a design, the convenience of installing the bracket member 31 can be effectively increased, and the tolerance strength of the bracket member 31 against shaking can also be increased.

[0051] Specifically, in some embodiments, the first connecting bracket 312 and the second connecting bracket 313 can be hingedly installed through a hinge. When the tower barrel is shaken under the influence of external forces, on the basis of the sliding component 32 sliding up and down in the sliding groove 311, the hinge is used to reduce or avoid metal fatigue caused by repeated bending, greatly increasing the practicality and durability of the bracket member 31, and it will not be easily damaged by shaking.

[0052] Such as Figure 5 and Figure 7 shown in a cable junction box, the sliding component 32 includes a sliding block 321 for being arranged in the sliding groove 311 and a tower barrel connecting piece 322 for fixedly connecting the tower barrel. Fasteners are respectively passed through the sliding block 321 and the sliding groove 311 and installed on the side of the tower barrel connecting piece 322 away from the tower barrel.

[0053] Specifically, in some embodiments, the sliding block 321 is a sliding part restricted to make a sliding connection in the sliding groove 311, the axial thickness of the sliding block 321 is greater than the sheet metal material thickness of the bracket member 31. Preferably, the sliding block 321 adopts an annular structure and is made of a material with better hardness and wear resistance. The tower barrel connecting piece 322 is a connecting part located between the bracket member 31 and the tower barrel for expanding the installation position. The tower barrel connecting piece 322 is made of a U-shaped bent sheet metal structure. The U-shaped bent sheet metal structure has certain elasticity and plasticity and is easy to generate bending. When the tower barrel is shaken under the influence of external forces, part of the shaking force can be removed through the U-shaped bent tower barrel connecting piece 322, further reducing the shaking force on the cable junction box.

[0054] More specifically, the sliding assembly 32 also includes screws and nuts for fastening and installing, and a first clamping gasket 323 and a second clamping gasket 324 are respectively provided on both sides of the sliding block 321 for limiting the position of the sliding block 321. During installation, the sliding block 321 is first placed in the sliding groove 311, and the first clamping gasket 323 is placed on the side of the sliding block 321 away from the tower connecting member 322, and the second clamping gasket 324 is placed on the side of the sliding block 321 close to the tower connecting member 322, so that the bracket member 31 is located between the first clamping gasket 323 and the second clamping gasket 324, and then screws are used to pass through the second clamping gasket 324, the tower connecting member 322, the sliding block 321 and the first clamping gasket 323 in sequence and locked with nuts, and the axial thickness of the sliding block 321 is greater than the sheet metal material thickness of the bracket member 31, so that there is enough gap between the first clamping gasket 323 and the second clamping gasket 324 and the bracket member 31 for the sliding block 321 to slide.

[0055] like Figure 1 , Figure 2 and Figure 9 The cable junction box shown also includes a shock absorber 400, a connector assembly 700 for connecting a bus duct is installed between the shock absorber 400 and the outer casing box 100, the shock absorber 400 is located on a side of the connector assembly 700 close to the tower, and the shock absorber 400 includes at least two shock-absorbing rubbers 41.

[0056] Specifically, in some embodiments, a shock absorber 400 is further installed between the outer side of the outer shell box 100 and the tower. The shock absorber 400 reduces the impact of shaking on the outer shell box 100 through the shock-absorbing and buffering of the shock-absorbing rubber 41. The shock absorber 400 can be installed with multiple shock-absorbing rubbers 41 to increase the structural strength of the shock absorber 400 and reduce the possibility of fatigue shedding. The combined use of multiple shock-absorbing rubbers 41 can also further enhance the shock-absorbing and buffering effect, thereby solving the problems of the outer shell box 100 being easy to loosen, displace, and connect deform.

[0057] Specifically, in some embodiments, the connector assembly 700 includes a connector 71 and a connection assembly housing 72. The connector 71 is used to electrically connect the busbar conductor 200 to the busway, ensuring smooth power transmission. The connector 71 has good electrical conductivity and can also adjust the relative positions of the busbar conductor 200 and the busway. The busbar conductor 200 can be firmly fixed to the busway through the connector 71, preventing displacement or detachment due to vibration or other external forces during operation. The connection assembly housing 72 is a protective housing surrounding the outside of the connector 71. The connection assembly housing 72 is installed at the bottom of the cable junction box to avoid the influence of external erosion such as wind and rain on the connector 71. The shock absorber 400 is installed between the connection assembly housing 72 and the tower barrel. Each shock absorber 400 is provided with at least two shock-absorbing rubbers 41 for enhancing the shock-absorbing effect. The combined use of multiple shock-absorbing rubbers 41 can further enhance the shock-absorbing and buffering effect, thus solving problems such as the easy loosening, displacement, and connection deformation of the outer shell box 100.

[0058] Specifically, in some embodiments, a sliding mechanism 300 and a shock absorber 400 can be installed between the outside of the outer shell box 100 and the tower barrel at the same time. The sliding mechanism 300 is installed on the top of the outer shell box 100, and the shock absorber 400 is installed at the bottom of the outer shell box 100. When the tower barrel shakes under the influence of external forces, in addition to reducing the shaking force through the multiple shock-absorbing rubbers 41 of the shock absorber 400 between the outer shell box 100 and the tower barrel, the sliding assembly 32 can also slide in the sliding groove 311 to avoid deformation of the components caused by the shaking, reducing the influence of the shaking on the outer shell box 100, thus solving problems such as the easy loosening, displacement, and connection deformation of the outer shell box 100.

[0059] As Figure 1 、 Figure 2 and Figure 9 shown, the tower barrel includes a barrel body 81 and a busway 82 installed on the barrel body 81, and the cable junction box is installed on the busway 82.

[0060] Specifically, in some embodiments, the tower barrel is a support structure tower commonly used in the field of wind power generation to support wind turbines. The barrel body 81 is an important structure for supporting wind turbine generator sets. The barrel body 81 adopts a tapered barrel structure that gradually narrows from bottom to top. The barrel body 81 is mainly used to install and carry equipment and cables such as power lines, bus ducts, wind turbine generator sets, and communication antennas. The bus duct 82 is a device installed on the tower barrel for power transmission and distribution, mainly used to connect various electrical equipment in the power distribution system on the tower barrel, such as transformers, cable junction boxes, and load equipment, etc. The bus duct 82 is composed of conductors and insulating materials, has a high current-carrying capacity, can effectively transmit electric energy, and reduce energy loss. Preferably, the bus duct 82 adopts an air-type bus duct, using air as an insulating medium to isolate and protect the conductors. At the upper and lower ends of the bus duct 82, the power output cables of the wind turbine generator set can be connected through the above-mentioned cable junction boxes respectively, which can effectively resist the shaking caused by external forces on the tower barrel, further enhance the stability of power transmission, and avoid the situation of internal fitting loosening, displacement, and deformation and breakage of connection components due to the influence of the tower barrel shaking on the cable connection.

[0061] As Figures 1 to 9 shown, the specific implementation manner of Embodiment 1 of the present invention is as follows:

[0062] During installation, the bus conductor 200 is arranged with the first conductor plate 24, the second conductor plate 25, the third conductor plate 26, and the fourth conductor plate 27 being misaligned and spaced apart and arranged in the vertical direction. The motor film 23 is wrapped around the outer surfaces of the second connection part 212 and the third connection part 213 of each phase-sequence conductor plate 21. The bus conductor 200 is installed in the outer shell box body 100 through three insulation phase-separating components 500. A plurality of phase-separating members 53 are arranged end to end in sequence along the length direction of the insulation phase-separating component 500. A long bolt passes through the clip frame 52 on one side and reaches the clip frame 52 on the other side through a plurality of phase-separating members 53 and then is tightened. Two groups of phase-separating components 51 are symmetrically arranged with the center lines of the clip frames 52 on both sides as the base points. The clamping ends of the phase-separating components 51 all face the direction close to the center of the insulation phase-separating component 500. The arrangement quantity of the phase-separating members 53 corresponds to the arrangement quantity of the phase-sequence conductor plates 21. The phase-separating members 53 are respectively installed between adjacent phase-sequence conductor plates 21 to stably separate adjacent phase-sequence conductor plates 21. The power output cable of the wind turbine generator set passes through the seal 600 installed on the cable through-hole 11 from the outside of the outer shell box body 100 and enters the inside of the outer shell box body 100. The power output cable is installed on the cable connection hole 22 of the phase-sequence conductor plate 21 using fasteners such as screws or bolts. A tool is used to tighten the screwing limit part 62 so that the seal 600 clamps the outside of the power output cable to achieve the sealing effect of dust, oil, and water prevention;

[0063] The bottom of the busbar conductor 200 is cooperatively connected with one end of the busbar trunking 82 through the connector assembly 700. The support member 31 is located at the top of the outer shell box body 100. The first connecting support 312 is installed on the outer surface of the outer shell box body 100. The tower barrel connecting member 322 is fixedly connected to the position of the barrel body 81 close to the support member 31. Place the sliding block 321 in the sliding groove 311, place the first clamping gasket 323 on the side of the sliding block 321 away from the tower barrel connecting member 322, and place the second clamping gasket 324 on the side of the sliding block 321 close to the tower barrel connecting member 322, so that the sliding groove 311 is located between the first clamping gasket 323 and the second clamping gasket 324. Then use screws to sequentially pass through the second clamping gasket 324, the tower barrel connecting member 322, the sliding block 321 and the first clamping gasket 323 and lock them with nuts to complete the installation of the sliding mechanism 300;

[0064] The shock absorber 400 is installed between the connecting component housing 72 and the barrel body 81. Each shock absorber 400 is provided with at least two shock-absorbing rubbers 41 for enhancing the shock-absorbing effect. The multiple shock-absorbing rubbers 41 are all arranged horizontally and are on the same horizontal plane to complete the installation of the shock absorber 400;

[0065] When the tower barrel shakes under the influence of external forces, between the outer shell box body 100 and the barrel body 81, in addition to reducing the shaking force through the multiple shock-absorbing rubbers 41 of the shock absorber 400, the sliding block 321 can also slide along the length direction of the sliding groove 311 to prevent the other components from being deformed due to shaking, reducing the influence of the shaking on the outer shell box body 100, thereby solving the problems such as the outer shell box body 100 being prone to looseness, displacement and connection deformation. This cable junction box has the advantages of being easy to replace, simple to maintain, safe and reliable, effectively resisting the shaking of the tower barrel and low cost.

[0066] The above only uses the embodiments to further illustrate the technical content of the present invention to make it easier for readers to understand, but it does not mean that the implementation modes of the present invention are limited to this. Any technical extension or re-creation made according to the present invention is protected by the present invention. The protection scope of the present invention is subject to the claims.

Claims

1. A cable junction box, characterized in that: The invention comprises an outer casing (100) for being installed at one end of a bus duct and a bus conductor (200) for power transmission, wherein the bus conductor (200) is installed in the outer casing (100), and a cable is connected to the bus conductor (200) through a cable threading hole (11) of the outer casing (100), and the outer casing (100) is installed on a tower via a sliding mechanism (300) for reducing the influence of shaking, and the sliding mechanism (300) comprises a bracket (31) and a sliding assembly (32), wherein the bracket (31) is provided with a sliding groove (311) for reducing the influence of shaking, and one end of the sliding assembly (32) is slidably connected to the sliding groove (311), and the other end of the sliding assembly (32) is installed on the tower.

2. A cable junction box according to claim 1, characterized in that: The busbar conductor (200) comprises at least three phase-sequence conductor plates (21) which are arranged at intervals, the phase-sequence conductor plates (21) being provided with a plurality of cable connection holes (22) for connecting cables, the cable connection holes (22) being arranged on different phase-sequence conductor plates (21) in a horizontally staggered manner.

3. A cable junction box according to claim 2, characterized in that: The phase sequence conductor plate (21) is arranged in a vertical direction, and comprises a first connection portion (211), a second connection portion (212), and a third connection portion (213) which are sequentially connected from top to bottom, the cable connection hole (22) is located at the first connection portion (211), and the second connection portion (212) extends laterally in a direction away from the center of the busbar conductor (200).

4. A cable junction box according to claim 2, characterized in that: The busbar conductor (200) is mounted on the housing box (100) via at least one insulating phase-isolating component (500); the insulating phase-isolating component (500) comprises a phase-isolating component (51) and a clip frame (52); the phase-isolating component (51) comprises a plurality of phase-isolating members (53) arranged and connected to each other along the length direction of the insulating phase-isolating component (500); the phase-isolating members (53) are used to separate the spacing distances of adjacent phase sequence conductor plates (21); and the clip frame (52) is respectively mounted on both ends of the phase-isolating component (51) via fasteners.

5. A cable junction box according to claim 2, characterized in that: A motor film (23) for insulation is sleeved on the surface of the phase sequence conductor plate (21), and the motor film (23) is made of insulating material.

6. The cable junction box according to claim 1, characterized in that: The outer shell box (100) is provided with a sealing member (600) at a corresponding position of each of the cable threading holes (11); the sealing member (600) can be used to seal against dirt and to fasten the cable; the sealing member (600) is provided with a wire-passing hole (61) for the cable to pass through; and a screwing limit portion (62) is provided on one side of the sealing member (600) extending out of the outer shell box (100) for easy screwing with a tool.

7. The cable junction box according to claim 1, characterized in that: The bracket member (31) comprises a first connecting bracket (312) and a second connecting bracket (313); the first connecting bracket (312) is connected to the outer shell body (100) via a fastener; the sliding groove (311) is located on the second connecting bracket (313); the second connecting bracket (313) extends from an end of the first connecting bracket (312) away from the fastener toward a side away from the outer shell body (100); and the sliding groove (311) is arranged along the vertical direction.

8. The cable junction box according to claim 1, characterized in that: The sliding assembly (32) comprises a sliding block (321) for being arranged in the sliding groove (311) and a tower connecting piece (322) for being fixedly connected to the tower, and a fastener is used to pass through the sliding block (321) and the sliding groove (311) respectively and is installed on a side of the tower connecting piece (322) away from the tower.

9. The cable junction box according to claim 1, characterized in that: It also includes a shock absorber (400), a connector assembly (700) for connecting a bus duct is installed between the shock absorber (400) and the housing box (100), the shock absorber (400) is located on a side of the connector assembly (700) close to the tower, and the shock absorber (400) includes at least two shock-absorbing rubbers (41).

10. A tower, characterized in that: It comprises a barrel (81) and a bus duct (82) installed on the barrel (81), wherein the bus duct (82) is installed with a cable junction box according to any one of claims 1 to 9.

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