Branch joint structure of prefabricated branch cable

Abstract

The invention belongs to the related technical field of cable joints, and particularly discloses a prefabricated branch cable branch joint structure which comprises an electrical cabinet, a main cable, branch cable bodies, a first assembly shell and a second assembly shell, a metal plate frame is arranged in the electrical cabinet, and the lower end of the interior of the main cable is connected with the two branch cable bodies; the first assembling shell and the second assembling shell are jointly arranged on the outer sides of the main cable and the two branch cable bodies, mounting frames are fixedly arranged on the inner sides of the first assembling shell and the second assembling shell, and mounting pieces are arranged on one sides of the two mounting frames; arc-shaped clamps are arranged on the upper end faces and the lower end faces of the first assembling shell and the second assembling shell correspondingly, clamping assemblies are arranged on the outer sides of the two arc-shaped clamps on the same end face correspondingly, disassembly can be convenient, internal branch cables can be overhauled, in addition, breakage of the branch cables in the wiring process can be reduced, and use of the branch cables is protected.

Description

Technical Field

[0001] The invention belongs to the technical field related to cable joints, and specifically discloses a prefabricated branch cable branch joint structure. Background Art

[0002] Power cables are cables used to transmit and distribute electrical energy. They are commonly used in urban underground power grids, lead-out lines of power stations, internal power supply of industrial and mining enterprises, and underwater transmission lines across rivers and seas. The proportion of cables in power lines is gradually increasing; Prefabricated branch cables, as the name suggests, are cables with branches that are manufactured on an assembly line using a series of special production equipment in the factory in accordance with the main and branch cable models, specifications, cross-sections, lengths and branch positions as required by cable users. Existing branch connectors are mostly one-piece. If there is a problem with the branch cable and the main cable, the internal connection cannot be removed, which limits the use of the branch cable. Moreover, as branch lines, branch cables need to be bent arbitrarily for routing during connection. Existing connectors cannot protect the branch cables connected at the root, which makes the branch cables prone to damage at the connection. Therefore, we need to make improvements. Summary of the invention

[0003] The purpose of the present invention is to solve the problems existing in the background technology, and a prefabricated branch cable branch joint structure is proposed, including an electrical cabinet, a main cable, a branch cable body, a first assembly shell, and a second assembly shell. A sheet metal frame is arranged inside the electrical cabinet, and two branch cable bodies are connected to the lower end of the main cable. The first assembly shell and the second assembly shell are jointly arranged on the outside of the main cable and the two branch cable bodies. The first assembly shell and the second assembly shell are both fixedly provided with mounting frames on the inner sides, and mounting parts are provided on one side of the two groups of mounting frames. The upper and lower end faces of the first assembly shell and the second assembly shell are both provided with arc clamps, and the outer sides of the two arc clamps on the same end face are provided with snap-fit ​​components.

[0004] Preferably, the mounting member includes a connecting seat fixedly arranged on the outside of one side of the mounting frame, and the connecting seat is connected to the sheet metal frame by a locking bolt and a locking nut.

[0005] Preferably, the clamping assembly includes a first arc groove and a second arc groove respectively opened on the outer surfaces of both sides of the arc clamp, the internal channels of the first arc groove and the second arc groove are connected to each other, the outer surfaces of the two arc clamps on the same end face are staggered with pins, a clamping column is rotatably sleeved on the outer side of the pin, a pin hole is opened in the middle of the second arc groove, and a clamping cylinder is rotatably sleeved on the outer side of the end of the clamping column away from the pin, and the clamping cylinder is movably clamped in the pin hole.

[0006] Preferably, a connecting column is fixedly embedded inside the first assembly shell and the second assembly shell and at one end away from the mounting frame, and a column is provided at one end of the two connecting columns away from the corresponding first assembly shell and the second assembly shell, and tightening arms are provided on the upper end faces and lower end faces of the two columns, a push rod is commonly provided between the two tightening arms, and a second connecting shaft is commonly provided between the two tightening arms and at one end away from the push rod, a wire-retaining assembly is provided on the outside of one side where the two push rods are close to each other, and a wire-attaching assembly is provided on the outside of one side where the two second connecting shafts are close to each other.

[0007] Preferably, the line-retaining assembly comprises an elastic plate fixedly mounted on the outside of a side where the retaining rods are close to each other, a retaining roller is fixedly arranged on a side of the elastic plate away from the retaining rods, and a connecting strip is fixedly arranged in the middle of the outer side of the retaining roller.

[0008] Preferably, the wire-sticking assembly includes a frame fixedly arranged on the outside of a side where the second connecting shaft is close to each other, a first connecting shaft is fixedly arranged inside the frame, an end of the connecting strip away from the roller is connected to the outside of the first connecting shaft, folding rods are fixedly arranged at the upper and lower angles inside the frame, an arc-shaped plate is fixedly arranged on the outer wall of the side of the folding rod away from the frame, and a plurality of smooth parts are arranged on the edges on both sides of the inner wall of the arc-shaped plate.

[0009] Preferably, the plurality of smooth parts include fixed columns which are arranged at equal distances laterally on one side edge of the inner wall of the arc-shaped plate, a circular sleeve is rotatably sleeved on the outer side of the fixed column, and the outer surface of the circular sleeve fits with the branch cable body at the corresponding position.

[0010] Preferably, locking plates are fixedly provided at both ends of one side of the frame away from the first connecting axis, a clamping shaft is fixedly provided on the outer surface of one of the locking plates, a movable buckle is rotatably sleeved on the outer side of the clamping shaft, and pin barrels are fixedly provided at both ends of the outer side of the other locking plate, a pin bolt is inserted into the inside of the movable buckle at the corresponding position, and the pin bolt and the pin barrel are threadedly matched.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. The first assembly shell and the second assembly shell are arranged outside the main cable and the two branch cable bodies. The first assembly shell and the second assembly shell can be clamped together with the arc clamp on the outer surface and the clamping columns arranged in an interlaced rotation. In this way, in the later use process, the external connection joints of the main cable and the branch cable body can be disassembled, so that the inside can be inspected, which greatly improves the use of prefabricated branch cables.

[0012] 2. A mounting frame and a connecting seat are arranged on the outside of the first assembly shell and the second assembly shell. The joint structure can be installed on the outside of the sheet metal frame inside the electrical cabinet with the help of locking bolts and locking nuts, thereby eliminating the need for later cable fixing components.

[0013] 3. Tightening arms and frames are respectively arranged on the outside of the first assembly shell and the second assembly shell to cooperate with the internal arc plate and multiple circular sleeves installed on the edges of the inner walls of the arc plate to movably abut on one side of the branch cable body, thereby reducing the bending damage of the branch cable body at the root of the first assembly shell and the second assembly shell, ensuring the flexible routing of the branch cable body when the lead wires are separated, and fully ensuring the stability near the ports of the first assembly shell and the second assembly shell under the connection of the elastic plate and the clamping rod, so that the branch cable body can reduce damage when it is in the routing state, ensuring the safe use of the internal wire core, and increasing the service life of the branch cable body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the connection structure between the overall structure of the present invention and the sheet metal frame; Figure 2 It is a schematic diagram of the working state when the overall structure of the present invention is installed inside the electrical cabinet; Figure 3 It is a schematic diagram of the connection structure between the overall structure of the present invention and the sheet metal frame from another angle; Figure 4 It is a schematic diagram of the connection structure between the first assembly shell, the exterior of the second assembly shell and the arc-shaped clip of the present invention; Figure 5 This is a schematic diagram of the split structure of the first assembly shell and the second assembly shell of the present invention; Figure 6 It is a schematic diagram of the connection structure between the tightening arm and the frame of the present invention; Figure 7 It is a schematic diagram of the connection structure between the arc plate and the circular sleeve of the present invention; Figure 8 It is a schematic diagram of the connection structure between the first connecting shaft and the connecting bar of the present invention; Fig. 9 For the present invention Figure 6 Schematic diagram of the structure at point A in the middle.

[0015] In the figure: 1. electrical cabinet; 2. sheet metal frame; 3. main cable; 4. branch cable body; 5. tightening arm; 6. connecting seat; 7. first assembly shell; 8. second assembly shell; 9. connecting strip; 10. frame; 11. roller; 12. mounting frame; 13. connecting column; 14. arc clamp; 15. push rod; 16. clamping column; 17. elastic plate; 18. first connecting shaft; 19. second connecting shaft; 20. pin shaft; 21. first arc groove; 22. second arc groove; 23. clamping cylinder; 24. column; 25. pin cylinder; 26. pin hole; 27. pin bolt; 28. round sleeve; 29. ​​arc plate; 30. locking plate; 31. movable buckle; 32. fixing column; 33. folding rod; 34. clamping shaft. DETAILED DESCRIPTION

[0016] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0018] like Figure 1-Figure 9 A prefabricated branch cable branch joint structure is shown, comprising an electrical cabinet 1, a main cable 3, a branch cable body 4, a first assembly shell 7, and a second assembly shell 8. A sheet metal frame 2 is arranged inside the electrical cabinet 1, and two branch cable bodies 4 are connected to the lower end of the main cable 3. The first assembly shell 7 and the second assembly shell 8 are jointly arranged on the outside of the main cable 3 and the two branch cable bodies 4. A mounting frame 12 is fixedly arranged on the inside of the first assembly shell 7 and the second assembly shell 8, and a mounting part is arranged on one side of the two groups of mounting frames 12. The upper and lower end surfaces of the first assembly shell 7 and the second assembly shell 8 are both provided with arc clamps 14, and the outer sides of the two arc clamps 14 on the same end surface are both provided with snap-fit ​​components.

[0019] The mounting part includes a connecting seat 6 fixedly arranged on the outside of one side of the mounting frame 12. The connecting seat 6 is connected to the sheet metal frame 2 by means of a locking bolt and a locking nut. The connecting seat 6 can be quickly installed on the outside of the sheet metal frame 2 through the connection of the external locking bolt and the locking nut. After the connection, the cable can be fixed inside the electrical cabinet 1, and the cables can be organized. When arranging and repairing in the later stage, the connected cables can be effectively distinguished, which provides convenience for the maintenance work.

[0020] The clamping assembly includes a first arc groove 21 and a second arc groove 22 respectively provided on the outer surfaces of both sides of the arc clip 14. The internal channels of the first arc groove 21 and the second arc groove 22 are connected to each other. The outer surfaces of the two arc clips 14 on the same end face are staggeredly installed with pins 20. The outer side of the pin 20 is rotatably sleeved with a clamping column 16. The middle of the second arc groove 22 is provided with a pin hole 26. The outer side of the clamping column 16 away from the pin 20 is rotatably sleeved with a clamping cylinder 23. The clamping cylinder 23 is movably mounted in the pin hole 26. The groove inside the first arc groove 21 is shorter than the second arc groove 22. The pin hole 26 inside the second arc groove 22 is used to position the clamping cylinder 23 outside the clamping column 16, so that the two clamping columns 16 on the same end face can be cross-clamped, so that the two arc clamps 14 can be clamped together, which is convenient to install and has a good clamping effect.

[0021] A connecting column 13 is fixedly embedded inside the first assembly shell 7 and the second assembly shell 8 and at one end away from the mounting frame 12, and a column 24 is provided at one end of the two connecting columns 13 away from the corresponding first assembly shell 7 and the second assembly shell 8, and tightening arms 5 are provided on the upper and lower end surfaces of the two columns 24, and a push rod 15 is commonly provided between the two tightening arms 5, and a second connecting shaft 19 is commonly provided between the two tightening arms 5 and at one end away from the push rod 15, and a push wire assembly is provided on the outside of the two push rods 15 on the side close to each other, and a push wire assembly is provided on the outside of the two second connecting shafts 19 on the side close to each other; Under the connection of the connecting column 13 and the column 24, the two tightening arms 5 are arranged on one side edge of the first assembly shell 7 and the second assembly shell 8, so that the two tightening arms 5 can drive the internal second connecting shaft 19, the support rod 15, the line support assembly, and the line contact assembly to clamp the line at the root of the first assembly shell 7 and the second assembly shell 8 in the yard.

[0022] The line-retaining assembly includes an elastic plate 17 fixedly mounted on the outside of the side where the resisting rods 15 are close to each other, a resisting roller 11 is fixedly arranged on the side of the elastic plate 17 away from the resisting rods 15, and a connecting strip 9 is fixedly arranged in the middle of the outer side of the resisting roller 11.

[0023] The wire attaching assembly includes a frame 10 fixedly arranged on the outside of the side where the second connecting shaft 19 is close to each other, a first connecting shaft 18 is fixedly arranged inside the frame 10, an end of the connecting strip 9 away from the roller 11 is connected to the outside of the first connecting shaft 18, folding rods 33 are fixedly arranged at the upper and lower angles inside the frame 10, an arc plate 29 is fixedly arranged on the outer wall of the side of the folding rod 33 away from the frame 10, and a plurality of smooth parts are arranged on the edges of both sides of the inner wall of the arc plate 29; The first connecting shaft 18 is connected to the connecting strip 9, so that the outer roller 11 can be close to one side of the branch cable body 4, so that the roller 11 is always attached to the branch cable body 4 under the movable pressure of the elastic plate 17; The folding rod 33 can be provided to allow the arc plate 29 to be installed on one side edge of the branch cable body 4 , so that the multiple smooth parts inside the arc plate 29 can abut against the outer surface of the branch cable body 4 .

[0024] The plurality of rounded parts include fixed columns 32 arranged at equal distances along the transverse direction at one side edge of the inner wall of the arc-shaped plate 29, and a round sleeve 28 is rotatably sleeved on the outer side of the fixed column 32, and the outer surface of the round sleeve 28 is in contact with the branch cable body 4 at the corresponding position; The round sleeve 28 can be rotatably sleeved on the outside of the fixing column 32 , and when the round sleeve 28 is in bending contact with the branch cable body 4 , it can cooperate with the branch cable body 4 to bend and move.

[0025] The frame 10 is fixedly provided with locking plates 30 at both ends of one side away from the first connecting shaft 18, wherein a clamping shaft 34 is fixedly provided on the outer surface of one locking plate 30, and a movable buckle 31 is rotatably sleeved on the outer side of the clamping shaft 34, and a pin barrel 25 is fixedly provided at both ends of the outer side of the other locking plate 30, and a pin bolt 27 is inserted into the inner part of the movable buckle 31 at the corresponding position, and the pin bolt 27 is threadedly matched with the pin barrel 25; The locking plate 30 corresponding to one of the movable buckles 31 is corresponding to the position of the second assembly shell 8. When the two locking plates 30 are fitted and fixed, the movable buckle 31 is rotated so that the pin 27 is correspondingly screwed into the pin barrel 25 of the locking plate 30 located on one side of the first assembly shell 7. In this way, the two locking plates 30 can cause the two sets of frames 10 and the arc plates 29 to wrap around the outer surfaces of the two branch cable bodies 4, thereby ensuring that the circular sleeves 28 on the outer edges of both sides of the arc plates 29 fit with the outer surfaces of the branch cable bodies 4, and then the branch cable bodies 4 of the leads are protected from damage at the end away from the first assembly shell 7 and the second assembly shell 8.

[0026] Working principle: When in use, after the main cable 3 and the two branch cable bodies 4 are linearly connected, they are engaged through the first assembly shell 7 and the second assembly shell 8. The clamping column 16 and the pin barrel 25 on the outer surface of the corresponding arc clamp 14 rotate from the inside of the current arc clamp 14 to the pin hole 26 inside the opposite second arc groove 22. The two arc clamps 14 on the same end face are staggered, so that the first assembly shell 7 and the second assembly shell 8 can be engaged. In the future, by rotating in the opposite direction, the pin barrel 25 rotates to the inside of the first arc groove 21, and the two arc clamps 14 can be separated, and the corresponding first assembly shell 7 The first assembly shell 7 and the second assembly shell 8 can be disassembled, and the main cable 3 and the branch cable body 4 can be disassembled and repaired during the later use. Two tightening arms 5 symmetrically arranged on one side of the first assembly shell 7 and the second assembly shell 8 are used to protect the branch cable body 4 and the first assembly shell 7 and the second assembly shell 8 from damage at the root, thereby ensuring that the branch cable body 4 can protect the stability of the wire core when turning to the lead wire respectively. The arc plate 29 inside the frame 10 between the two tightening arms 5 can be rolled over the outer surface of the corresponding branch cable body 4 through multiple sets of round sleeves 28 on the edges of both sides. The cable is flat, so when it is bent, it can be applied obliquely and symmetrically on both sides of the flat cable, thereby reducing the damage during bending and protecting the wire core. The locking plates 30 arranged outside the two sets of oppositely arranged frames 10 can rotate the movable buckles 31 at the corresponding ends so that the movable buckles 31 are rotated to the pin barrel 25, so that the pin 27 inserted inside the movable buckle 31 is screwed into the pin barrel 25, thereby allowing the two locking plates 30 to be clamped. Therefore, the two branch cable bodies 4 at the end away from the first assembly shell 7 and the second assembly shell 8 can be bent in different directions, and the bending range is It can be flexed and extended flexibly, avoiding the entanglement between the branch cable body 4 inside the first assembly shell 7 and the second assembly shell 8 and the root of the main cable 3, thereby affecting the use of the joint structure, and in order to ensure the use close to the first assembly shell 7 and the second assembly shell 8, the two rollers 11 are also connected with the connecting strip 9 and the elastic plate 17 to abut against the branch cable body 4, so as to further guide and protect the branch cable body 4 at the root, so that the branch cable body 4 can stay away when the lead is bent, and the connection root of the main cable 3 and the branch cable body 4 is protected as much as possible.

[0027] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A prefabricated branch cable branch joint structure, comprising an electrical cabinet (1), a main cable (3), a branch cable body (4), a first assembly shell (7), and a second assembly shell (8), characterized in that: A sheet metal frame (2) is arranged inside the electrical cabinet (1); two branch cable bodies (4) are connected to the lower end of the main cable (3); the first assembly shell (7) and the second assembly shell (8) are arranged together on the outside of the main cable (3) and the two branch cable bodies (4); mounting frames (12) are fixedly arranged inside the first assembly shell (7) and the second assembly shell (8); mounting parts are arranged on one side of the two groups of mounting frames (12); arc clamps (14) are arranged on the upper end surface and the lower end surface of the first assembly shell (7) and the second assembly shell (8); and a snap-fit ​​assembly is arranged on the outside of the two arc clamps (14) on the same end surface.

2. A prefabricated branch cable branch joint structure according to claim 1, characterized in that: The mounting member comprises a connecting seat (6) fixedly arranged on the outside of one side of the mounting frame (12), and the connecting seat (6) is connected to the sheet metal frame (2) via a locking bolt and a locking nut.

3. A prefabricated branch cable branch joint structure according to claim 1, characterized in that: The clamping assembly comprises a first arc groove (21) and a second arc groove (22) respectively provided on the outer surfaces of both sides of the arc clamp (14); the internal channels of the first arc groove (21) and the second arc groove (22) are interconnected; the outer surfaces of the two arc clamps (14) on the same end face are staggeredly installed with pin shafts (20); the outer side of the pin shaft (20) is rotatably sleeved with a clamping column (16); the middle part of the inner part of the second arc groove (22) is provided with a pin hole (26); the outer side of the end of the clamping column (16) away from the pin shaft (20) is rotatably sleeved with a clamping sleeve (23); the clamping sleeve (23) is movably clamped in the pin hole (26).

4. A prefabricated branch cable branch joint structure according to claim 2, characterized in that: A connecting column (13) is fixedly embedded inside the first assembly shell (7) and the second assembly shell (8) at one end away from the mounting frame (12); a column (24) is provided at one end of the two connecting columns (13) away from the corresponding first assembly shell (7) and the second assembly shell (8); tightening arms (5) are provided on the upper end surface and the lower end surface of the two columns (24); a support rod (15) is provided between the two tightening arms (5); a second connecting shaft (19) is provided between the two tightening arms (5) at one end away from the support rod (15); a line-retaining assembly is provided on the outside of the two support rods (15) at one side close to each other; and a line-attaching assembly is provided on the outside of the two second connecting shafts (19) at one side close to each other.

5. A prefabricated branch cable branch joint structure according to claim 4, characterized in that: The line-retaining assembly comprises an elastic plate (17) fixedly mounted on the outside of a side of the resisting rods (15) close to each other, a resisting roller (11) being fixedly arranged on a side of the elastic plate (17) away from the resisting rods (15), and a connecting strip (9) being fixedly arranged in the middle of the outside of the resisting roller (11).

6. A prefabricated branch cable branch joint structure according to claim 5, characterized in that: The wire-attaching assembly comprises a frame (10) fixedly arranged on the outside of a side where the second connecting shaft (19) is close to each other, a first connecting shaft (18) is fixedly arranged inside the frame (10), an end of the connecting strip (9) away from the roller (11) is connected to the outside of the first connecting shaft (18), folding rods (33) are fixedly arranged at upper and lower angles inside the frame (10), an arc-shaped plate (29) is fixedly arranged on the outer wall of the side of the folding rod (33) away from the frame (10), and a plurality of smooth parts are arranged on the edges of both sides of the inner wall of the arc-shaped plate (29).

7. A prefabricated branch cable branch joint structure according to claim 6, characterized in that: The plurality of circularly smooth parts include fixed columns (32) arranged at equal distances in the transverse direction at the edge of one side of the inner wall of the arc-shaped plate (29), a circular sleeve (28) being rotatably sleeved on the outer side of the fixed columns (32), and an outer surface of the circular sleeve (28) being in contact with a branch cable body (4) at a corresponding position.

8. A prefabricated branch cable branch joint structure according to claim 6, characterized in that: The frame (10) is fixedly provided with locking plates (30) at both ends of one side away from the first connecting shaft (18), wherein a clamping shaft (34) is fixedly provided on the outer surface of one of the locking plates (30), and a movable buckle (31) is rotatably sleeved on the outer side of the clamping shaft (34), and a pin barrel (25) is fixedly provided at both ends of the outer side of the other locking plate (30), and a pin bolt (27) is inserted into the interior of the movable buckle (31) at a corresponding position, and the pin bolt (27) is threadedly engaged with the pin barrel (25).

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