A connection and hoisting structure for photovoltaic system transmission wires

Abstract

The present invention discloses a connection and hoisting structure for photovoltaic system transmission cables, belonging to the field of cable installation. It includes splicing blocks that can be mutually fitted and inserted. A fixing ring is connected under the splicing block, and two protective sleeves with cavities inside and threaded to each other are installed in the fixing ring. The cable connectors are fixed in the protective sleeves for connection. When the fixing bolts on the splicing blocks are equipped with hooks, hoisting can be achieved. The structure of the present invention effectively isolates temperature and has an insulation effect while enhancing the sealing performance. It is simple to operate, has high work efficiency, has a beautiful structure, and is convenient for subsequent monitoring and maintenance.

Description

Technical Field

[0001] The present invention relates to the field of wire and cable installation, and particularly to a connection and hoisting structure for power transmission wires and cables in a photovoltaic system. Background Art

[0002] Power cables are used to transmit and distribute electrical energy. They are commonly used in urban underground power grids, outgoing lines from power stations, internal power supply in industrial and mining enterprises, and underwater power transmission across rivers and seas. In power lines, the proportion of cables is gradually increasing. When using cables to transmit electrical energy, to improve the transmission efficiency, the connection between cable joints needs to be stable. When erecting cables on iron towers or laying cables in high-rise buildings, the cables need to be hoisted.

[0003] The main technical problems of the existing connection and hoisting structures for wires and cables are that the cable joints in the existing technology are very troublesome in actual operation due to their simple structure and require multiple processes for installation, which greatly reduces their working efficiency. Also, the cable joints in the existing technology are sealed with a thermoplastic material that insulates heat and water around a single joint, and multiple wraps of the thermoplastic are required during actual use. Due to the large volume of the joint, the sealing effect is average. The structures used to enhance the clamping effect in the existing technology are clamped after reinforcement, but if the reinforcement effect is not good, it is very easy to fall off, making it unable to meet the requirements of the existing technology during use. Therefore, a connection and hoisting structure for wires and cables that is convenient to operate, has good sealing performance, is easy to fix and install, and is convenient for monitoring and maintenance is needed. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a connection and hoisting structure for power transmission wires and cables in a photovoltaic system, realizing an insulating connection with good sealing performance and a simple hoisting and fixing operation.

[0005] To solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A connection and hoisting structure for a power transmission cable of a photovoltaic system, comprising a fixing mechanism, a protection mechanism and a locking mechanism. The fixing mechanism includes a splicing block, one end of the splicing block is provided with a clamping groove, and the other end of the splicing block is provided with a clamping block. The clamping groove and the clamping block are mutually fitted. The protection mechanism includes a fixing ring, the fixing ring is fixedly connected to the lower part of the splicing block, and a first protection sleeve is fixedly connected inside the fixing ring. One end of the first protection sleeve is provided with a groove, and internal threads are provided on the inner side of the groove. A second protection sleeve is movably connected inside the fixing ring, and external threads are provided at one end of the second protection sleeve. The internal threads in the groove and the external threads are threadedly installed with each other. Cavities for placing cable joints are provided inside both the first protection sleeve and the second protection sleeve. A first injection hole is provided on the side surface of the first protection sleeve extending outside the fixing ring, and a second injection hole is provided on the side surface of the second protection sleeve extending outside the fixing ring. High-temperature resistant glue is injected into the cavity through the first injection hole and the second injection hole.

[0007] A further improvement of the technical solution of the present invention lies in that: sealing rings are provided at the cavity ports at the non-threaded ends of the first protection sleeve and the second protection sleeve, and the sealing rings are in contact with the cables.

[0008] A further improvement of the technical solution of the present invention lies in that: a second through hole is opened through the clamping block, and first through holes are opened through the upper and lower ends of the clamping groove. The positions of the first through holes and the second through holes correspond to each other, and the diameters are equal.

[0009] A further improvement of the technical solution of the present invention lies in that: a fixing bolt is connected through between the first through hole and the second through hole, a fixing nut with a matching thread is movably connected to the fixing bolt, and a placement hole for placing the head of the fixing bolt is opened at the position of the first through hole on the bottom surface of the splicing block.

[0010] A further improvement of the technical solution of the present invention lies in that: a plurality of installation holes are opened at the bottom of the groove of the clamping groove, springs are fixedly connected to the bottom ends of the installation holes, positioning pins are fixedly connected to the top ends of the springs, positioning holes are opened on the side surface of the clamping block, and the positions of the positioning holes and the positioning pins correspond to each other, and the diameters are equal.

[0011] A further improvement of the technical solution of the present invention lies in that: the fixing bolt is provided with a hook.

[0012] A further improvement of the technical solution of the present invention lies in that: the lower part of the splicing block is a concave arc surface with an opening downward, and the radian of the fixing ring matches the arc surface of the lower part of the splicing block.

[0013] Due to the adoption of the above technical solution, the technical progress achieved by the present invention is:

[0014] By placing the connectors of the cables in the cavities of the first protective sleeve and the second protective sleeve respectively, and connecting them by screwing with the external thread and the internal thread in the groove, and fixing and connecting the cables through the sealing rings at both ends of the first protective sleeve and the second protective sleeve, a sealed space in a sealed state is formed within the first protective sleeve and the second protective sleeve to protect the cable connection. Then, high-temperature resistant glue is injected into the cavities of the first protective sleeve and the second protective sleeve through the first injection hole and the second injection hole, so that during use, while enhancing its sealing performance, it effectively isolates temperature and has an insulating effect, with simpler operation and improved work efficiency.

[0015] According to the usage requirements, the clamping blocks of adjacent fixing mechanisms are clamped into the clamping grooves to splice and install multiple cables. When the cables need to be hoisted, the fixing bolts are replaced with bolts with hooks to facilitate the hoisting of the cables. At the same time, when installing the cables, they are also fixed at the predetermined position through the fixing bolts for installation, which not only enhances the aesthetics but also facilitates subsequent maintenance and repair of the cables. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the overall mechanism;

[0018] Figure 2 It is a schematic diagram of the structure of the fixing mechanism;

[0019] Figure 3 It is an exploded schematic diagram of the structure of the fixing mechanism;

[0020] Figure 4 It is an exploded schematic diagram of the structure of the protection mechanism;

[0021] The labels in the figure include 1. Fixing mechanism, 101. Splicing block, 102. First through hole, 103. Positioning pin, 104. Clamping groove, 105. Clamping block, 106. Second through hole, 107. Positioning hole, 108. Placing hole, 109. Spring, 110. Installation hole, 2. Protection mechanism, 201. Fixed ring, 202. First injection hole, 203. First protective sleeve, 204. Second protective sleeve, 205. Internal thread, 206. External thread, 207. Second injection hole, 3. Locking structure, 301. Fixed bolt, 302. Fixed nut. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The present invention will be further described in detail below in conjunction with embodiments:

[0023] Embodiment 1

[0024] A connection and hoisting structure for a power transmission cable of a photovoltaic system, including a fixing mechanism 1, a protection mechanism 2 and a locking mechanism 3. The fixing mechanism 1 is as Figure 2 Figure 3 shown. The fixing mechanism includes a splicing block 101. One end of the splicing block 101 is provided with a card slot 104, and the other end is provided with a card block 105. The shapes and sizes of the card slot 104 and the card block 105 are mutually compatible. Multiple identical splicing blocks 101 can be inserted and combined with each other. The top of the card block 105 is provided with a second through hole 106. Corresponding to the position of the second through hole 106, first through holes 102 are provided at the upper and lower ends of the card slot 104. A fixing bolt 301 is connected through between the first through hole 102 and the second through hole 106. A fixing nut 302 with a matching thread is movably connected to the fixing bolt 301. A placement hole 108 is provided on the bottom surface of the splicing block 101 corresponding to the head position of the fixing bolt 301. Six mounting holes 110 are provided at the bottom end of the card slot 104. A spring 109 is fixedly connected to the bottom end of the mounting hole 110. A positioning pin 103 is fixedly connected to the top end of the spring 109. A positioning hole 107 is provided on the side surface of the card block 105 corresponding to the position of the positioning pin 103. When the card block 105 is inserted into the card slot 104, the spring 109 pushes the positioning pin 103 into the positioning hole 107 to prevent position deviation of adjacent splicing blocks 101 during installation.

[0025] The protection mechanism 2 is as Figure 4 shown, including a fixing ring 201. The fixing ring 201 is fixedly connected to the concave surface below the splicing block 101. A first protective sleeve 203 is fixedly connected to the inner side of the fixing ring 201. A groove is provided at one end of the first protective sleeve. An internal thread 205 is provided in the groove. A second protective sleeve 204 is movably connected to the inner side of the fixing ring 201. An external thread 206 is provided at one end of the second protective sleeve 204. The external thread 206 is threadedly installed with the internal thread 205 in the groove. Cavities are provided inside both the first protective sleeve 203 and the second protective sleeve 204. A first injection hole 202 is provided on the side surface of the first protective sleeve 203 extending outside the fixing ring. A second injection hole 207 is provided on the side surface of the second protective sleeve 204 extending outside the fixing ring. Sealing rings are provided at the non-threaded ends of the first protective sleeve 203 and the second protective sleeve 204. The sealing rings are in contact with the cable.

[0026] The overall mechanism is as Figure 1As shown in the figure, the protection mechanism 2 is fixed to the lower part of the fixed mechanism 1, and the locking mechanism 3 locks and fixes the connecting blocks 101 connected to each other. The connectors of the cable are respectively placed in the cavities of the first protective sleeve 203 and the second protective sleeve 204, and are threadedly connected through the external thread 206 and the internal thread 205 in the groove. The cable is fixedly connected through the sealing rings at both ends of the first protective sleeve and the second protective sleeve to ensure that a sealed space is formed in the first protective sleeve 203 and the second protective sleeve 204 to protect the cable connection. High-temperature resistant glue is injected into the cavities of the first protective sleeve 203 and the second protective sleeve 204 through the first injection hole 202 and the second injection hole 207, so that the overall sealing performance is enhanced during use, and the temperature can be effectively isolated and the insulation effect can be achieved. The operation is simpler and the work efficiency is improved.

[0027] Embodiment 2

[0028] According to the usage requirements, insert the block 105 of the adjacent fixed mechanism 1 into the slot 104, pass the fixing bolt 301 through the first through hole 102 and the second through hole 106, and tighten the fixing nut 302 to splice and install the multi-strand cable. When the cable needs to be hoisted, replace the fixing bolt 301 with a bolt with a hook to facilitate the hoisting of the cable. At the same time, when the cable is installed, the cable is also fixed at the predetermined position through the fixing bolt 301 for installation, which not only increases the aesthetics but also facilitates the subsequent maintenance and repair of the cable.

[0029] The embodiments described above are only used to describe the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A connection and hoisting structure for a power transmission cable of a photovoltaic system, characterized in that: It includes a fixing mechanism (1), a protection mechanism (2) and a locking mechanism (3). The fixing mechanism (1) includes splicing blocks (101). One end of the splicing block (101) is provided with a clamping groove (104), and the other end of the splicing block (101) is provided with a clamping block (105). The clamping grooves (104) and clamping blocks (105) of adjacent splicing blocks (101) are mutually engaged and fixedly locked through the locking mechanism (3). The protection mechanism (2) includes a fixing ring (201). The fixing ring (201) is fixedly connected to the lower part of the splicing block (101). A first protective sleeve (203) is fixedly connected inside the fixing ring. One end of the first protective sleeve (203) is provided with a groove, and an internal thread (205) is provided on the inner side of the groove. A second protective sleeve (204) is movably connected inside the fixing ring. One end of the second protective sleeve (204) is provided with an external thread (206). The internal thread (205) and the external thread (206) in the groove are threadedly installed with each other. Cavities for placing cable connectors are provided inside both the first protective sleeve (203) and the second protective sleeve (204). A first injection hole (202) is provided on the side surface of the first protective sleeve (203) extending outside the fixing ring. A second injection hole (207) is provided on the side surface of the second protective sleeve (204) extending outside the fixing ring. High-temperature resistant glue is injected into the cavity through the first injection hole (202) and the second injection hole (207); a second through hole (106) is drilled through the clamping block (105). First through holes (102) are drilled through the upper and lower ends of the clamping groove (104). The positions of the first through holes (102) and the second through holes (106) correspond, and their diameters are equal; the locking mechanism (3) includes a fixing bolt (301) and a fixing nut (302). The fixing bolt (301) is connected through the first through hole (102) and the second through hole (106). A fixing nut (302) with a matching thread is movably connected to the fixing bolt (301). A placement hole (108) for placing the head of the fixing bolt (301) is provided at the position of the first through hole (102) on the bottom surface of the splicing block (101); a plurality of mounting holes (110) are provided at the bottom of the groove of the clamping groove (104). A spring (109) is fixedly connected to the bottom end of the mounting hole. A positioning pin (103) is fixedly connected to the top end of the spring (109). A positioning hole (107) is provided on the side surface of the clamping block (105). The positions of the positioning hole (107) and the positioning pin (103) correspond, and their diameters are equal; the fixing bolt (301) is provided with a hook; the lower part of the splicing block (101) is a concave arc surface opening downward, and the radian of the fixing ring (201) matches the arc surface of the lower part of the splicing block (101).

2. The connection and hoisting structure of a power transmission cable for a photovoltaic system according to claim 1, characterized in that: Sealing rings are provided at the cavity ports at the non-threaded ends of the first protective sleeve (203) and the second protective sleeve (204), and the sealing rings are in contact with the cables.

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