Bus expansion joint

Abstract

The utility model relates to the bus connection field especially, relates to a bus expansion joint, technical scheme: a bus expansion joint, including bellows, connecting sleeve, telescopic sleeve, first spring, second spring and support copper line, the inner wall of bellows sets up from outside to inside and sets up second spring and internal sleeve, the front and back two ends of bellows are penetrated and are opened and are set up the equidistance distribution of several groups through -hole that surround a week bellows, the utility model discloses a second spring and support copper line can from inside to outside the intensity of supplementary promotion bellows telescopic and bending adjustment time, to promote the service life and the strength of bellows, and the telescopic sleeve that can be telescopic adjustment along the internal sleeve can be adjusted flexibly according to the length of different bus main body, and first spring can assist the support telescopic sleeve to avoid telescopic sleeve retraction, lead to bus main body expose outside, solved the use intensity of the existing bus expansion joint is poor, and bus is easy to expose the problem.

Description

Technical Field

[0001] This utility model belongs to the field of busbar connection, and specifically relates to a busbar expansion joint. Background Technology

[0002] Busbar expansion joints (also called busbar expansion joints) are devices used for connecting busbar systems in power systems. Their main function is to compensate for the expansion or displacement of the busbar caused by temperature changes, vibrations, etc. They can effectively ensure the stable operation of the busbar and avoid faults or damage caused by excessive busbar deformation.

[0003] The outer wall of most existing busbar expansion joints is made of corrugated pipe. However, in actual use, corrugated pipe structures are easily damaged by stress during installation or vibration of the busbar, resulting in the busbar being exposed and affecting its service life. In addition, the bending angle of the corrugated pipe structure is also relatively limited, and excessive bending can easily damage the corrugated pipe.

[0004] Therefore, in response to the problems of poor strength and easy exposure of existing busbar expansion joints, a new type of busbar expansion joint is developed. By adding internal and external support reinforcement structures and spring auxiliary support structures to the busbar expansion joint, the service life and stress resistance of the busbar expansion joint can be effectively improved, and the busbar can also be prevented from being easily exposed. Utility Model Content

[0005] In order to overcome the problems of poor strength of existing busbar expansion joints and the easy exposure of busbars.

[0006] The technical solution of this utility model is as follows: a busbar expansion joint, including a corrugated pipe, a connecting sleeve, and a telescopic sleeve, and also including a first spring, a second spring, and a supporting copper wire. The inner wall of the corrugated pipe is provided with a second spring and an inner sleeve arranged from the outside to the inside. Several sets of through holes are equidistantly distributed around the front and rear ends of the corrugated pipe. The supporting copper wire is installed in the through holes. The inner walls of the front and rear ends of the corrugated pipe are provided with connecting sleeves. The end of the connecting sleeve away from the corrugated pipe is fixedly connected to a connecting sleeve. The inner walls of the front and rear ends of the inner sleeve are provided with telescopic sleeves. Several sets of sliders are equidistantly distributed around the telescopic sleeve on the outer wall of the telescopic sleeve near the corrugated pipe. The inner wall of the inner sleeve is provided with four sets of sliding grooves equidistantly distributed and symmetrically distributed around the inner wall of the inner sleeve. The first spring is disposed in the sliding groove.

[0007] Preferably, the outer walls of the front and rear ends of the inner sleeve are fixedly connected to four sets of extension frames that are equidistantly distributed around the inner sleeve, and the outer walls of the extension frames are fixedly connected to the inner wall of the corrugated pipe.

[0008] Preferably, the front and rear ends of the second spring are fixedly connected to two sets of extension frames distributed in the front and rear, respectively. The end of the slider near the bellows is fixedly connected to the first connecting post, and the inner wall of the end of the slide groove near the bellows is fixedly connected to the second connecting post.

[0009] Preferably, one end of the first spring is fitted onto the first connecting post, and the other end of the first spring is fitted onto the second connecting post.

[0010] Preferably, a slot is provided at the end of the connecting sleeve near the corrugated pipe, and the main body of the busbar is fitted into the telescopic sleeve and the inner sleeve.

[0011] Preferably, the slider is adapted to the groove, and the slot is adapted to the front and rear ends of the bellows.

[0012] Preferably, the inner walls of both the inner sleeve and the telescopic sleeve are fitted to the outer wall of the busbar body, and the outer wall of the telescopic sleeve is fitted to the inner wall of the connecting sleeve.

[0013] The beneficial effects of this utility model are:

[0014] 1. The second spring and supporting copper wire can help improve the strength of the bellows during expansion, contraction and bending adjustment from the inside out, thereby increasing the service life and strength of the bellows.

[0015] 2. The telescopic sleeve, which can be adjusted along the inner sleeve, allows for flexible adjustment based on the length of different busbar bodies.

[0016] 3. The first spring can help support the telescopic sleeve to prevent it from retracting and exposing the main body of the busbar. Attached Figure Description

[0017] Figure 1 The diagram shown is a three-dimensional structural schematic of the busbar expansion joint of this utility model.

[0018] Figure 2 The diagram shown is a three-dimensional disassembled view of the busbar expansion joint of this utility model.

[0019] Figure 3 The diagram shown is a three-dimensional disassembled view of the bellows, supporting copper wire, internal sleeve, first spring, and second spring of the busbar expansion joint of this utility model.

[0020] Figure 4 The diagram shown is a three-dimensional disassembled view of the connecting sleeve, connecting disc, and telescopic sleeve of the busbar expansion joint of this utility model.

[0021] Figure 5 The diagram shown is a three-dimensional structural schematic of the bellows of the busbar expansion joint of this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1-Corrugated pipe, 2-Connecting sleeve, 3-Telescopic sleeve, 4-Busbar body, 5-Supporting copper wire, 6-Through hole, 7-Inner sleeve, 8-Extension frame, 9-First spring, 10-Second spring, 11-Slider, 12-First connecting post, 13-Slot, 14-Connecting sleeve disc, 15-Second connecting post, 16-Slide groove. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please see Figures 1-5 This utility model provides an embodiment: a busbar expansion joint, including a corrugated pipe 1, a connecting sleeve 2 and a telescopic sleeve 3, and also includes a first spring 9, a second spring 10 and a supporting copper wire 5. The inner wall of the corrugated pipe 1 is provided with the second spring 10 and the inner sleeve 7 arranged from the outside to the inside. Several sets of through holes 6 are equidistantly distributed around the front and rear ends of the corrugated pipe 1. The supporting copper wire 5 is installed in the through holes 6. The inner walls of the front and rear ends of the corrugated pipe 1 are provided with connecting sleeves 14. The end of the connecting sleeve 14 away from the corrugated pipe 1 is fixedly connected to the connecting sleeve 2. The inner walls of the front and rear ends of the inner sleeve 7 are provided with telescopic sleeves 3. Several sets of sliders 11 are equidistantly distributed around the telescopic sleeve 3 on the outer wall of the telescopic sleeve 3 near the corrugated pipe 1. The inner wall of the inner sleeve 7 is provided with four sets of sliding grooves 16 equidistantly distributed and symmetrically distributed around the inner wall of the inner sleeve 7. The first spring 9 is disposed in the sliding grooves 16.

[0025] The second spring 10 and the supporting copper wire 5 can assist in improving the strength of the bellows 1 during expansion, contraction and bending adjustment from the inside out, thereby improving the service life and strength of the bellows 1. The telescopic sleeve 3, which can be adjusted along the inner sleeve 7, can be flexibly adjusted according to the length of different busbar bodies 4. The first spring 9 can assist in supporting the telescopic sleeve 3 to prevent the telescopic sleeve 3 from retracting and causing the busbar body 4 to be exposed.

[0026] Please see Figures 3-5In this embodiment, four sets of extension frames 8 are fixedly connected to the outer walls of the front and rear ends of the inner sleeve 7, which are equidistantly distributed around the inner sleeve 7. The outer walls of the extension frames 8 are fixedly connected to the inner wall of the bellows 1. In use, the extension frames 8 can limit the front and rear ends of the second spring 10 to prevent the second spring 10 from displacing. The front and rear ends of the second spring 10 are respectively fixedly connected to the two sets of extension frames 8 distributed in the front and rear. A first connecting post 12 is fixedly connected to the end of the slider 11 near the bellows 1, and a second connecting post 15 is fixedly connected to the inner wall of the end of the slide groove 16 near the bellows 1. In use, the first connecting post 12 and the second connecting post 15 can limit the movement of the second spring 10. The first spring 9 is positioned and supported at both ends to prevent displacement. One end of the first spring 9 is fitted onto the first connecting post 12, and the other end of the first spring 9 is fitted onto the second connecting post 15. In use, the first spring 9 can support the telescopic sleeve 3 with its own elasticity to prevent it from retracting into the inner sleeve 7. The connecting sleeve 14 has a slot 13 at one end near the corrugated pipe 1. The busbar body 4 is fitted into the telescopic sleeve 3 and the inner sleeve 7. In use, the slot 13 allows the connecting sleeve 14 to be installed at both ends of the corrugated pipe 1 and can be adjusted accordingly along the curvature of the corrugated pipe 1.

[0027] Please see Figures 3-5 In this embodiment, the slider 11 is adapted to the slide groove 16, and the slot 13 is adapted to the front and rear ends of the corrugated pipe 1. In use, the slider 11, in conjunction with the slide groove 16, can improve the stability of the telescopic sleeve 3 in telescopic adjustment along the inner wall of the inner sleeve 7. The inner walls of the inner sleeve 7 and the telescopic sleeve 3 are both in contact with the outer wall of the busbar body 4, and the outer wall of the telescopic sleeve 3 is in contact with the inner wall of the connecting sleeve 2. In use, the inner sleeve 7 and the telescopic sleeve 3 can protect the exposed front and rear ends of the busbar body 4.

[0028] Before use, the busbar body 4 should pass through the inner walls of the telescopic sleeve 3, the inner sleeve 7 and the corrugated pipe 1, and the center of the busbar body 4 should be located on the inner wall of the inner sleeve 7.

[0029] When the busbar body 4 is in operation, the second spring 10 and the supporting copper wire 5 can help to enhance the strength of the bellows 1 during expansion, contraction and bending adjustment from the inside out, so as to improve the stress buffering of the bellows 1 on the busbar body 4 and improve the service life of the busbar body 4. Meanwhile, the first spring 9 can help support the telescopic sleeve 3 to prevent the telescopic sleeve 3 from retracting and causing the busbar body 4 to be exposed.

[0030] Through the above steps, the second spring 10 and the supporting copper wire 5 can assist in improving the strength of the bellows 1 during expansion, contraction and bending adjustment from the inside out, thereby improving the service life and strength of the bellows 1. The telescopic sleeve 3, which can be adjusted along the inner sleeve 7, can be flexibly adjusted according to the length of different busbar bodies 4. The first spring 9 can assist in supporting the telescopic sleeve 3 to prevent the telescopic sleeve 3 from retracting and causing the busbar body 4 to be exposed. This solves the problem of poor strength of existing busbar expansion joints and the easy exposure of the busbar.

[0031] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A busbar expansion joint, comprising a bellows (1), a connecting sleeve (2), and a telescopic sleeve (3), characterized in that: It also includes a first spring (9), a second spring (10), and a supporting copper wire (5). The inner wall of the corrugated pipe (1) is provided with a second spring (10) and an inner sleeve (7) arranged from the outside to the inside. Several sets of through holes (6) are equidistantly distributed around the corrugated pipe (1) at both ends. The supporting copper wire (5) is installed in the through holes (6). The inner walls of the front and rear ends of the corrugated pipe (1) are provided with connecting sleeves (14). The connecting sleeves (14) are far away from the corrugated pipe. One end of the corrugated tube (1) is fixedly connected to a connecting sleeve (2). The inner walls of the front and rear ends of the inner sleeve (7) are provided with telescopic sleeves (3). The outer wall of the telescopic sleeve (3) near the corrugated tube (1) is fixedly connected to several sets of sliders (11) that are equidistantly distributed around the telescopic sleeve (3). The inner wall of the inner sleeve (7) is provided with four sets of sliding grooves (16) that are equidistantly distributed around the inner wall of the inner sleeve (7) and symmetrically distributed front and back. The first spring (9) is set in the sliding groove (16).

2. The busbar expansion joint according to claim 1, characterized in that: The inner sleeve (7) has four sets of extension frames (8) that are equidistantly distributed around the inner sleeve (7) at both ends of its outer wall. The outer wall of the extension frame (8) is fixed to the inner wall of the corrugated pipe (1).

3. The busbar expansion joint according to claim 2, characterized in that: The front and rear ends of the second spring (10) are respectively fixed to two sets of extension frames (8) distributed in the front and rear. The first connecting post (12) is fixed to the end of the slider (11) near the bellows (1), and the second connecting post (15) is fixed to the inner wall of the end of the slide groove (16) near the bellows (1).

4. The busbar expansion joint according to claim 3, characterized in that: One end of the first spring (9) is fitted onto the first connecting post (12), and the other end of the first spring (9) is fitted onto the second connecting post (15).

5. The busbar expansion joint according to claim 4, characterized in that: A slot (13) is provided at one end of the connecting sleeve (14) near the corrugated pipe (1), and the main body (4) of the busbar is fitted into the telescopic sleeve (3) and the inner sleeve (7).

6. The busbar expansion joint according to claim 5, characterized in that: The slider (11) is adapted to the groove (16), and the slot (13) is adapted to the front and rear ends of the bellows (1).

7. The busbar expansion joint according to claim 6, characterized in that: The inner walls of the inner sleeve (7) and the telescopic sleeve (3) are both in contact with the outer wall of the busbar body (4), and the outer wall of the telescopic sleeve (3) is in contact with the inner wall of the connecting sleeve (2).

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