Sliding support for bus

Abstract

The utility model relates to the field of bus arrangement of switching devices, in particular to a sliding support for a bus. The sliding support for the bus comprises a supporting leg assembly, the top of the supporting leg assembly is provided with a sliding supporting face, the sliding supporting face is provided with a movable sliding seat, the movable sliding seat is provided with a connecting structure used for being connected with a bus flange, the movable sliding seat is provided with a through hole formed in the length direction of the bus in a penetrating mode, and the through hole is communicated with the connecting structure. The top of the supporting leg assembly is fixedly connected with a restraining piece penetrating through the through hole, and when the bus is telescopically deformed, the movable sliding base can slide on the sliding supporting face relative to the restraining piece. When the bus generates axial displacement due to temperature change or generates radial displacement under the action of external wind load, the movable sliding seat can slide on the upper surface of the supporting leg assembly along the axial direction of the bus and the radial direction of the bus under the driving of the bus so as to compensate the displacement change of the bus, so that the damage to parts is avoided, the reliability is higher, and the service life is prolonged. And the compensation amount can be designed to be large.

Description

Technical Field

[0001] The utility model relates to the field of arrangement of busbars of switch devices, in particular to a sliding bracket for busbars. Background Art

[0002] During GIS busbar operation, as the ambient temperature fluctuates, the busbar will shift due to thermal expansion and contraction. Traditionally, a thermal expansion joint is installed in the middle of the busbar. The core component of this thermal expansion joint is a metal bellows. The metal bellows is elastic and stretchable, capable of compensating for busbar displacement caused by temperature changes. However, the expansion and contraction capacity of the metal bellows is limited. In extreme temperature conditions, the busbar can shift significantly, and the metal bellows are easily damaged, making it unable to compensate for the large displacement caused by temperature changes. Utility Model Content

[0003] The utility model aims to provide a sliding bracket for a busbar, so as to solve the problem that the existing thermal expansion joint cannot effectively compensate for a large displacement when the busbar is subjected to extreme temperature changes.

[0004] To achieve the above objectives, the busbar sliding bracket of the present invention adopts the following technical solutions:

[0005] A sliding bracket for a busbar includes a leg assembly, the top of the leg assembly has a sliding support surface, the sliding support surface is provided with a movable slide, the movable slide is provided with a connecting structure for connecting to the busbar flange, the movable slide is provided with a through hole set through the length direction of the busbar, the top of the leg assembly is fixedly connected to a constraint member passing through the through hole, and when the busbar is telescopically deformed, the movable slide can slide relative to the constraint member on the sliding support surface.

[0006] Furthermore, the movable slide includes an I-beam, the through hole is arranged on the middle vertical edge of the I-beam, and the connecting structure is arranged on the top horizontal plane of the I-beam.

[0007] Furthermore, a limiting member for limiting the relative swing of the movable slide and the restraining member is provided on both sides of the middle vertical edge of the bottom horizontal edge of the I-beam.

[0008] Furthermore, the movable slide also includes reinforcing ribs welded to both ends of the movable slide, and the reinforcing ribs are arranged perpendicular to the middle vertical edge of the I-beam.

[0009] Furthermore, the through hole has a floating distance from the restraining member in a direction perpendicular to the length of the restraining member.

[0010] Furthermore, the restraint is an I-shaped plate that is wide at both ends and narrow in the middle. The I-shaped plate is fixedly connected to the leg assembly through both ends, and the narrow plate section in the middle passes through the through hole.

[0011] Furthermore, pads are provided between the two ends of the I-shaped plate and the top of the leg assembly, and bolts and screws pass through the I-shaped plate and the pads to fix the I-shaped plate to the top of the leg assembly.

[0012] Furthermore, the connection structure is an L-shaped plate, and the L-shaped plate includes a horizontal connection plate connected to the movable slide and a vertical connection plate connected to the busbar flange.

[0013] Furthermore, an adjusting bolt is screwed onto the horizontal connecting plate, the lower end of the adjusting bolt abuts against the top surface of the movable slide, and the height of the horizontal connecting plate relative to the movable slide can be adjusted when the adjusting screw is screwed.

[0014] Furthermore, the movable slide includes a wear-resistant plate arranged at the bottom position, and the wear-resistant plate is used to slide on the sliding support surface.

[0015] Beneficial effects: The busbar sliding bracket of the utility model is a pioneering invention. Specifically, it includes a leg assembly, a movable slide is provided on the upper part of the leg assembly, a restraining member fixedly connected to the leg assembly is provided inside the movable slide, and the movable slide can slide relative to the restraining member on the top surface of the leg assembly. The upper part of the movable slide is connected to the busbar flange. When the busbar produces axial displacement due to temperature changes or radial displacement under the action of external wind loads, the movable slide can slide on the upper surface of the leg assembly along the axial direction and radial direction of the busbar under the drive of the busbar, thereby compensating for the displacement change of the busbar. It will not cause damage to the components, has high reliability, and can be designed to have a large compensation amount. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of an embodiment of a sliding bracket for a busbar of the present utility model;

[0017] Figure 2 for Figure 1 Installation relationship diagram of the middle L-shaped plate and the movable slide;

[0018] Figure 3 for Figure 1 Side view of the moving slide;

[0019] Figure 4 for Figure 1 Top view of the middle I-shaped plate.

[0020] In the figure: 1. Support leg assembly; 2. Sliding support surface; 3. Sliding support plate; 4. Wear-resistant plate; 5. Constraint; 51. I-shaped plate; 52. Pad; 6. Moving slide; 61. I-beam; 62. Through hole; 64. Reinforcement rib; 7. Connection structure; 71. Horizontal connecting plate; 72. Vertical connecting plate; 8. Limiting member; 9. Adjusting bolt; 10. Support leg; 11. Crossbeam; 12. Busbar; 13. Busbar flange; 14. Through hole. DETAILED DESCRIPTION

[0021] The utility model provides a sliding support surface on the top of the leg assembly, a movable slide is provided on the sliding support surface, the top of the movable slide is connected to the busbar flange, a through hole along the length direction of the busbar is provided on the movable slide, and a restraining member fixedly connected to the top of the leg assembly passes through the through hole. When the busbar is expanded and deformed due to thermal expansion and contraction, the busbar drives the movable slide to slide on the sliding support surface of the leg assembly.

[0022] Based on the above conception, as a basic embodiment, the sliding bracket for the busbar of the utility model includes a leg assembly 1, the top of the leg assembly 1 has a sliding support surface 2, the sliding support surface 2 is provided with a movable slide 6, the movable slide 6 is provided with a connecting structure 7 for connecting with the busbar flange 13, the movable slide 6 is provided with a through hole 62 set through in the length direction of the busbar, and the top of the leg assembly 1 is fixedly connected with a constraint 5 passing through the through hole 62. When the busbar is telescopically deformed, the movable slide 6 can slide relative to the constraint 5 on the sliding support surface.

[0023] In a preferred embodiment, the leg assembly includes a leg 10, a crossbeam 11 fixedly connected to the leg 10, and a sliding support plate 3 fixedly mounted on the crossbeam 11, wherein the upper surface of the sliding support plate 3 is the sliding support surface 2. The leg 10 is an angle steel beam, and two groups of angle steel beams are provided. The two groups of angle steel beams are arranged at the bottom of the crossbeam 11 along the axial direction of the busbar 12. The crossbeam 11 is an I-beam, and a diagonal reinforcing rib plate is provided between the angle steel beam and the bottom plate of the I-beam for reinforcement and fixation. The top plate of the crossbeam 11 is provided with a through hole, which is used to install the sliding support plate 3 and the restraining member 5. The movable slide 6 includes a wear-resistant plate 4 disposed at its bottom position. The wear-resistant plate 4 is used to slide on the sliding support surface 2. When the busbar is displaced, the busbar 12 drives the movable slide 6 to slide along the axial direction of the busbar on the sliding support surface 2 to compensate for the expansion and contraction of the busbar 12.

[0024] In order to facilitate the replacement of the wear-resistant plate 4 and the sliding support plate 3, the wear-resistant plate 4 can be detachably mounted on the bottom of the movable slide 6 body by bolts, and the sliding support plate 3 can be detachably mounted on the beam 11 by bolts. The sliding support plate 3 should have the characteristics of a small friction coefficient and good wear resistance. The sliding support plate 3 can be made of nylon plate.

[0025] The movable slide 6 is the main component for compensating for the expansion and contraction deformation of the busbar. In one embodiment, the main body of the movable slide 6 can be set as a shell-like structure with a hollow interior. The shell-like structure can be obtained by welding or by bending a steel plate. The shell-like structure includes side surfaces, a top surface and a bottom surface. The through-holes 62 are set on two opposite sides of the shell-like structure. The connecting structure 7 is set on the top surface. The restraint 5 passes through the through-hole 62 of the shell-like structure. The restraint 5 cooperates with the through-holes 62 on the two sides of the shell-like structure to limit the swing of the movable slide 6 around the horizontal axis due to other external forces during the sliding process. A wear-resistant plate 4 is set on the bottom surface of the shell-like structure. The wear-resistant plate 4 is used to slide on the sliding support surface 2. In order to facilitate material acquisition and processing, it is preferably as follows Figure 2 As shown, the main part of the movable slide 6 is set as an I-beam 61, the through hole 62 is set on the middle vertical edge of the I-beam 61, and the connecting structure 7 is set on the top horizontal surface of the I-beam 61. In order to prevent the movable slide 6 from shaking during the sliding process, as shown in FIG. Figure 3 As shown, on the bottom horizontal side of the I-beam 61, on both sides of the middle vertical side, there are respectively provided limit members 8 for limiting the relative swing of the movable slide 6 and the restraining member 5. Figure 3 As shown, the limiting member 8 is a long strip block structure, and the restraining member 5 can cooperate with the limiting block 8 to limit the movable slide 6 from swinging around the horizontal axis due to other external forces during the sliding process.

[0026] In order to further enhance the strength of the movable slide 6, preferably, the movable slide 6 further includes reinforcing ribs 64 welded at both ends of the movable slide 6, and the reinforcing ribs 64 are arranged perpendicular to the middle vertical edge of the I-beam. Figure 2 As shown, in order to avoid damage caused by stress concentration, the reinforcing ribs 64 are cut into arc shapes at the corresponding positions of the I-beam at the corners where the middle vertical side is perpendicular to the top side and the corners where the middle vertical side is perpendicular to the bottom side. In other embodiments, the reinforcing ribs 64 may not be provided if the strength is met.

[0027] The busbar 12 will produce radial displacement under wind load and other radial external forces. In order to further compensate for the radial displacement change, the size of the constraint 5 in the radial direction parallel to the busbar 12 should be smaller than the size of the through hole 62, so that the through hole 62 has a floating distance from the constraint 5 in the length direction perpendicular to the constraint 5, so that when the busbar 12 has radial displacement changes, the movable slide 6 can slide relative to the constraint 5 along the radial direction of the busbar.

[0028] The restraining member 5 can be set as a cylindrical rod, which passes through the through hole 62. The radial dimension of the rod is much smaller than the dimension of the through hole 62. Therefore, when the movable slide 6 performs axial expansion compensation and radial displacement compensation on the busbar 12, it can slide along the axial and radial directions of the busbar 12.

[0029] The restraining member 5 may also be a plate-shaped structure. In order to make the restraining member 5 have a larger compensation distance in the radial direction of the busbar 12, preferably, as shown in FIG. Figure 4 As shown, the restraint 5 is set as an I-shaped plate 51 that is wide at both ends and narrow in the middle. The I-shaped plate 51 is fixed to the top of the leg assembly 1 by welding supporting feet between the two ends of the I-shaped plate 51 and the top of the leg assembly 1. However, for the convenience of disassembly and assembly, preferably, a pad 52 is provided between the two ends of the I-shaped plate 51 and the top of the leg assembly 1, and bolts and screws pass through the I-shaped plate 51 and the pad 52 to fix the I-shaped plate to the top of the leg assembly 1.

[0030] like Figure 1-2 As shown, when the busbar 12 at the end is subjected to axial expansion and contraction compensation and radial displacement compensation, a connecting structure 7 is provided on the top of the movable slide 6. The connecting structure 7 is a square plate vertically welded to the horizontal edge of the top of the movable slide 6. The square plate is provided with multiple through holes in a direction perpendicular to the horizontal surface of the top of the movable slide 6 to meet the docking installation requirements of busbar flanges 13 of different heights. In actual engineering applications, in order to facilitate the adjustment of the docking distance between the connecting plate 7 and the busbar flange 13, and to provide a larger connection surface between the connecting structure 7 and the movable slide 6, the movable slide 6 is prevented from swinging due to uneven force due to a small connection surface when the busbar 12 is caused to slide due to expansion and contraction. Preferably, the connecting plate 7 is provided as an L-shaped plate, which can be obtained by welding or bending a plate. The L-shaped plate includes a horizontal fixing plate 71 connected to the movable slide 6 and a vertical connecting plate 72 connected to the busbar flange. The vertical connecting plate 72 is provided with through holes for fixed connection to the busbar flange 13. An adjusting bolt 4 is provided at the center of the horizontal connecting plate 71, and an adjusting bolt 9 is screwed into the horizontal connecting plate 71. The horizontal connecting plate 71 is also provided with a through hole for fixed connection with the top plate of the I-beam 61 of the movable slide 6. During installation, the adjusting bolt 9 is adjusted to the appropriate position to ensure that the vertical connecting plate 72 can be fixedly connected to the busbar flange 13. The top of the adjusting bolt 9 abuts the upper surface of the top plate 63 of the movable slide 6. A metal gasket is placed between the top plate of the I-beam 61 and the horizontal connecting plate 71, and the connection is fixed with bolts.

[0031] When the busbar 12 that is not at the end is subjected to axial expansion and contraction compensation and radial displacement compensation, a clamp hole is provided on the top of the movable slide 6, and the busbar 12 is fixed to the movable slide 6 through the clamp.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The scope of patent protection of the present invention shall be based on the claims. Any equivalent structural changes made using the description and drawings of the present invention shall also be included in the scope of protection of the present invention.

Claims

1. A sliding bracket for a busbar, characterized in that: It includes a leg assembly, the top of the leg assembly has a sliding support surface, the sliding support surface is provided with a movable slide, the movable slide is provided with a connecting structure for connecting to the busbar flange, the movable slide is provided with a through hole set through in the length direction of the busbar, and the top of the leg assembly is fixedly connected with a constraint member passing through the through hole. When the busbar is telescopically deformed, the movable slide can slide relative to the constraint member on the sliding support surface.

2. The busbar sliding bracket according to claim 1, characterized in that: The movable slide comprises an I-beam, the through hole is arranged on the middle vertical side of the I-beam, and the connecting structure is arranged on the top horizontal plane of the I-beam.

3. The busbar sliding bracket according to claim 2, characterized in that: On both sides of the middle vertical edge of the horizontal edge of the bottom of the I-beam, there are respectively provided limiting parts for limiting the relative swing of the movable slide and the restraining part.

4. The busbar sliding bracket according to claim 2, characterized in that: The movable slide also includes reinforcing ribs welded at both ends of the movable slide, and the reinforcing ribs are arranged perpendicular to the middle vertical edge of the I-beam.

5. The busbar sliding bracket according to any one of claims 1 to 4, characterized in that: The through hole has a floating distance from the restraining member in a direction perpendicular to the length of the restraining member.

6. The busbar sliding bracket according to claim 5, characterized in that: The restraining member is an I-shaped plate that is wide at both ends and narrow in the middle. The I-shaped plate is fixedly connected to the leg assembly through both ends, and the narrow plate section in the middle passes through the through hole.

7. The busbar sliding bracket according to claim 6, characterized in that: Pads are provided between the two ends of the I-shaped plate and the top of the leg assembly, and bolts and screws pass through the I-shaped plate and the pads to fix the I-shaped plate to the top of the leg assembly.

8. The busbar sliding bracket according to any one of claims 1 to 4, characterized in that: The connecting structure is an L-shaped plate, which includes a horizontal connecting plate connected to the movable slide and a vertical connecting plate connected to the busbar flange.

9. The busbar sliding bracket according to claim 8, characterized in that: An adjusting bolt is screwed onto the horizontal connecting plate, the lower end of the adjusting bolt abuts against the top surface of the movable slide, and the height of the horizontal connecting plate relative to the movable slide can be adjusted when the adjusting screw is screwed.

10. The busbar sliding bracket according to any one of claims 1 to 4, characterized in that: The movable slide includes a wear-resistant plate arranged at a bottom position, and the wear-resistant plate is used for sliding on the sliding support surface.

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