Pipe type bus three-point suspension fitting

Abstract

The utility model discloses a kind of tubular bus three-point suspension fittings, including main suspension unit and the auxiliary suspension unit being oppositely arranged at the both sides of main suspension unit, and being connected with it, the axis of main suspension unit and auxiliary suspension unit are all arranged on tubular bus vertical symmetry plane, auxiliary suspension unit includes mounting plate assembly, extension pull rod assembly, shock-absorbing buffer assembly, basket bolt and auxiliary suspension hanging point being sequentially arranged from the outside of main suspension unit;The utility model is equipped with mounting plate assembly, solves the poor adaptability of existing fittings, the stress imbalance problem caused by difficult to make up construction error, realizes three-point stress balance stability;By designing telescopic extension pull rod assembly, solve the problem of insufficient universality of existing fittings, realize flexible adaptation to different spacing and bus specifications;By setting shock-absorbing buffer structure, solve the problem of limited shock-absorbing effect of existing fittings, effectively block vibration transmission, avoid component loosening and bus damage.

Description

Technical Field

[0001] This utility model relates to the field of power transmission and transformation equipment technology, specifically a tubular busbar three-point suspension hardware. Background Technology

[0002] Tubular busbars are widely used in power distribution equipment in high-voltage and ultra-high-voltage power transmission and transformation projects due to their advantages such as large current carrying capacity, excellent heat dissipation, and low corona loss. As the core support component of long-span tubular busbars, the three-point suspension hardware achieves stable fixation and load balance of the busbar through the coordinated action of the main suspension and the double-sided auxiliary suspension, thus ensuring the safety of power transmission.

[0003] The existing three-point suspension hardware has many shortcomings. First, the existing hardware has poor adaptability in terms of spatial layout and angle adjustment, making it difficult to compensate for on-site construction errors and easily leading to stress imbalance. Second, the existing hardware lacks versatility and cannot flexibly adapt to different spacing and busbar specifications. Third, the existing hardware has limited shock absorption and cushioning effect, and vibration transmission can easily cause component loosening and busbar damage. Utility Model Content

[0004] The purpose of this utility model is to provide a tubular busbar three-point suspension hardware to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A three-point suspension fitting for a tubular busbar includes a main suspension unit and auxiliary suspension units disposed opposite to and connected to the main suspension unit on both sides. The axes of the main suspension unit and the auxiliary suspension units are both located on the vertical symmetrical plane of the tubular busbar. The auxiliary suspension unit includes a mounting plate assembly, an extension rod assembly, a shock-absorbing buffer assembly, a turnbuckle, and an auxiliary suspension hanging point arranged sequentially from the main suspension unit outwards. The mounting plate assembly is adjustablely mounted on the main suspension unit. The mounting plate assembly is threadedly connected to the extension rod assembly. The extension rod assembly is a telescopic structure. A shock-absorbing buffer assembly is fixedly connected to the other side of the extension rod assembly. A turnbuckle is fixedly connected to the other side of the shock-absorbing buffer assembly. An auxiliary suspension hanging point is hinged to the other side of the turnbuckle.

[0006] As a further embodiment of this utility model: the main suspension unit includes a main suspension hanging point and an insulating bushing. A hanging hole is provided at the center of the top of the main suspension hanging point for connecting with an insulator string. An arc-shaped clamping groove is provided at the bottom. A tubular busbar passes through the arc-shaped clamping groove and is locked and fixed by bolts. A high-strength insulating bushing is pasted on the inner wall of the arc-shaped clamping groove.

[0007] As a further embodiment of this utility model: the mounting plate assembly includes an L-shaped adjusting plate, a pin, a locking nut, and an angle adjustment structure. The L-shaped adjusting plate is divided into a vertical section and a horizontal section. The vertical section has a through hole, and the main suspension hanging point sidewall opposite to the through hole has a connecting hole. The pin passes through the connecting hole and the through hole of the vertical section to realize the rotational connection between the L-shaped adjusting plate and the main suspension hanging point. After adjustment, the connection is fixed by the locking nut. The horizontal section of the L-shaped adjusting plate has an internal threaded hole for connecting with the extension rod assembly.

[0008] As a further embodiment of this utility model: the angle adjustment structure includes an angle scale and a pointer. The angle scale is located outside the connecting hole, and the pointer is a thin metal rod welded to the outer wall of the vertical section of the L-shaped adjustment plate, with the pointer pointing to the angle scale.

[0009] As a further embodiment of this utility model: the extension rod assembly is a telescopic structure, including an external threaded rod, a lock nut, a sleeve, an inner cylinder, and a fastening bolt. One end of the external threaded rod is threadedly connected to the internal threaded hole of the horizontal section of the L-shaped adjusting plate and fixed by the lock nut. The other end of the external threaded rod is fixedly connected to the sleeve, and the inner cylinder is movably connected inside the sleeve. Multiple sets of adjusting holes are opened along the axial direction on the outer wall of the sleeve, and positioning holes are opened at corresponding positions on the inner cylinder. The fastening bolt passes through the adjusting holes and the positioning holes to lock the telescopic length.

[0010] As a further embodiment of this utility model: the shock-absorbing and buffering assembly includes a buffer sleeve, a buffer spring, a connecting plate, a damper, a guide rod, and a hanging ring. One end of the buffer sleeve is fixedly connected to the inner cylinder of the extension rod assembly, and the other end is an open structure. The buffer spring is set inside the buffer sleeve. One end of the buffer spring away from the opening is fixedly connected to the inner wall of the buffer sleeve, and the other end is fixedly connected to the connecting plate. A damper is set inside the buffer spring. The damper is fixedly connected between the inner wall of the buffer sleeve and the connecting plate. A guide rod is fixedly connected to the side of the connecting plate near the open structure. The guide rod extends out of the buffer sleeve and is fixedly connected to the hanging ring. The hanging ring is connected to a turnbuckle. The open end of the buffer sleeve is provided with an inner folded boss. The guide rod is slidably connected to the inner wall of the inner folded boss.

[0011] As a further improvement of this utility model: the hook at one end of the turnbuckle is hinged to the hanging ring of the shock-absorbing and buffering component, and the other end is connected to the auxiliary suspension point through the hinge seat.

[0012] As a further improvement of this utility model: an installation hole is provided at the center of the top of the auxiliary suspension point, the installation hole is connected to the hinge seat of the turnbuckle, and an insulating bushing is pasted on the inner wall of the auxiliary suspension point.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: A three-point suspension hardware for tubular busbars solves the problems of poor adaptability and difficulty in compensating for force imbalance caused by construction errors by setting up an installation plate assembly, thereby achieving balanced and stable force at three points; by designing a telescopic extension rod assembly, it solves the problem of insufficient versatility of existing hardware, enabling flexible adaptation to different spacings and busbar specifications; by setting up a shock-absorbing and buffering structure, it solves the problem of limited shock-absorbing and buffering effect of existing hardware, effectively blocking vibration transmission, avoiding component loosening and busbar damage, and ultimately ensuring the long-term stable operation of the tubular busbar, improving construction convenience and equipment service life. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a tubular busbar three-point suspension hardware.

[0015] Figure 2 This is a structural schematic diagram of an auxiliary suspension unit on one side of a three-point suspension fitting for a tubular busbar.

[0016] Figure 3 This is an enlarged view of point A in a three-point suspension fitting for a tubular busbar.

[0017] Figure 4 This is a cross-sectional view of a shock-absorbing and buffering component in a three-point suspension fitting for a tubular busbar.

[0018] In the diagram: Main suspension hanging point 1, hanging hole 11, arc-shaped clamping groove 12, insulating bushing 2, mounting plate assembly 3, L-shaped adjusting plate 31, pin 32, locking nut 33, angle scale 34, pointer 35, extension rod assembly 4, external thread rod 41, anti-loosening nut 42, sleeve 43, adjusting hole 431, inner cylinder 44, positioning hole 441, fastening bolt 45, shock absorption buffer assembly 5, buffer sleeve 51, buffer spring 52, connecting plate 53, damper 54, guide rod 55, hanging ring 56, turnbuckle 6, auxiliary suspension hanging point 7, mounting hole 71. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1-4In this embodiment of the utility model, a three-point suspension hardware for a tubular busbar includes a main suspension unit and auxiliary suspension units arranged opposite to and connected to the main suspension unit. The axes of the main suspension unit and the auxiliary suspension units are both arranged on the vertical symmetry plane of the tubular busbar. The auxiliary suspension unit includes a mounting plate assembly 3, an extension rod assembly 4, a shock-absorbing buffer assembly 5, a turnbuckle 6, and an auxiliary suspension hanging point 7 arranged sequentially from the main suspension unit outwards. All components are coaxially connected to form a horizontal tension force, which works in conjunction with the vertical force of the main suspension unit to balance the load of the tubular busbar. The mounting plate assembly 3 is adjustablely mounted on the main suspension unit. The mounting plate assembly 3 is threadedly connected to the extension rod assembly 4. The extension rod assembly 4 is a telescopic structure. The shock-absorbing buffer assembly 5 is fixedly connected to the other side of the extension rod assembly 4. The turnbuckle 6 is fixedly connected to the other side of the shock-absorbing buffer assembly 5. The auxiliary suspension hanging point 7 is hinged to the other side of the turnbuckle 6.

[0021] The main suspension unit is used to directly clamp the tubular busbar and transmit vertical loads. It includes a main suspension point 1 and an insulating bushing 2. The main suspension point 1 has a hanging hole 11 at the top center, which is used to connect with the insulator string. The bottom is provided with an arc-shaped clamping groove 12. The tubular busbar passes through the arc-shaped clamping groove 12 and is fixed by bolts. The high-strength insulating bushing 2 is pasted on the inner wall of the arc-shaped clamping groove 12.

[0022] Mounting plate assembly 3 includes an L-shaped adjusting plate 31, a pin 32, a locking nut 33, and an angle adjustment structure. The L-shaped adjusting plate 31 is divided into a vertical section and a horizontal section. The vertical section has a through hole, and the main suspension point 1 opposite the through hole has a connecting hole on its side wall. The pin 32 passes through the connecting hole and the through hole of the vertical section to realize the rotational connection between the L-shaped adjusting plate 31 and the main suspension point 1. After adjustment, the connection is fixed by the locking nut 33. The horizontal section of the L-shaped adjusting plate 31 has an internal threaded hole for connecting with the extension rod assembly 4. The angle adjustment structure includes an angle scale 34 and a pointer 35. The angle scale 34 is located outside the connecting hole, and the pointer 35 is a thin metal rod welded to the outer side wall of the vertical section of the L-shaped adjusting plate 31, with the pointer pointing to the angle scale 34. The horizontal angle of the auxiliary suspension unit can be adjusted by rotating the L-shaped adjustment plate 31. After adjustment, it is locked and fixed by the locking nut 33 at the end of the pin 32. This structure compensates for the horizontal construction error of the auxiliary suspension hanging point 7, avoids the auxiliary suspension from tilting and being subjected to force, prevents the busbar from stress concentration or excessive deflection, and adapts to the tie angle requirements of busbars with different spans. With the help of turnbuckles, the tension on both sides is balanced, ensuring the stability of the three-point force.

[0023] The extension rod assembly 4 is a telescopic structure used to adapt to the changes in the distance between the main suspension unit and the auxiliary suspension hanging point 7, while also being compatible with the suspension requirements of different specifications of tube busbars. The extension rod assembly 4 includes an external threaded rod 41, a lock nut 42, a sleeve 43, an inner cylinder 44, and a fastening bolt 45. One end of the external threaded rod 41 is threadedly connected to the internal threaded hole of the horizontal section of the L-shaped adjusting plate 31 and is fixed by the lock nut 42. The other end of the external threaded rod 41 is fixedly connected to the sleeve 43. The inner cylinder 44 is movably connected inside the sleeve 43. Multiple sets of adjusting holes 431 are opened along the axial direction on the outer wall of the sleeve 43. The inner cylinder 44 is provided with positioning holes 441 at corresponding positions. The fastening bolt 45 passes through the adjusting holes 431 and the positioning holes 441 to lock the telescopic length.

[0024] The shock-absorbing buffer assembly 5 is used to absorb the vibration energy during the operation of the tubular busbar, prevent the vibration from being transmitted to the auxiliary suspension point 7, and protect the hardware and busbar. The shock-absorbing buffer assembly 5 includes a buffer sleeve 51, a buffer spring 52, a connecting plate 53, a damper 54, a guide rod 55, and a hanging ring 56. One end of the buffer sleeve 51 is fixedly connected to the inner cylinder 44 of the extension rod assembly 4, and the other end is an open structure. The buffer spring 52 is set inside the buffer sleeve 51, and the end of the buffer spring 52 away from the opening is connected to the buffer sleeve 56. The inner wall of the sleeve 51 is fixedly connected, and the other end is fixedly connected to the connecting plate 53. The buffer spring 52 is provided with a damper 54, which is fixedly connected between the inner wall of the buffer sleeve 51 and the connecting plate 53. The connecting plate 53 is fixedly connected to the side near the opening structure with a guide rod 55, and the guide rod 55 extends out of the buffer sleeve 51 and is fixedly connected to a hanging ring 56. The hanging ring 56 is connected to the turnbuckle 6. The opening end of the buffer sleeve 51 is provided with an inner folded boss, and the guide rod 55 is slidably connected to the inner wall of the inner folded boss.

[0025] The hook at one end of the turnbuckle 6 is hinged to the hanging ring 56 of the shock-absorbing buffer assembly 5, and the other end is connected to the auxiliary suspension hanging point 7 through the hinge seat. By rotating the adjusting nut of the turnbuckle 6, the length of the auxiliary suspension unit can be finely adjusted to compensate for installation errors and adjust the tension force, ensuring the tension balance of the auxiliary suspension units on both sides.

[0026] The auxiliary suspension point 7 has a mounting hole 71 (not shown in the figure) at the center of its top. The mounting hole 71 is connected to the hinge seat of the turnbuckle 6. An insulating bushing 2 is pasted on the inner wall of the auxiliary suspension point 7.

[0027] The working principle of this utility model is as follows: During the installation stage, the tubular busbar is first inserted into the arc-shaped clamping groove 12 of the main suspension point 1. The high-strength insulating bushing 2 on the inner wall of the arc-shaped clamping groove 12 is used to achieve fitting and positioning. Then, it is locked and fixed by bolts to complete the vertical load-bearing installation of the main suspension unit on the tubular busbar. Then, the hanging hole 11 at the top of the main suspension point 1 is connected to the insulator string to ensure stable transmission of vertical load. Then, the auxiliary suspension units on both sides are assembled. First, the L-shaped adjusting plate 31 of the mounting plate assembly 3 is rotatably connected to the side wall of the main suspension point 1 by the pin 32. With reference to the cooperation of the angle scale 34 and the pointer 35, the L-shaped adjusting plate 31 is rotated to adjust the horizontal angle of the auxiliary suspension unit to compensate for the horizontal construction error of the auxiliary suspension point 7. After adapting to the current busbar span connection requirements, the pin 32 is locked with the locking nut 33 to fix the angle. When the distance between the main suspension unit and the auxiliary suspension mounting point 7 needs to be finely adjusted, the length is finely adjusted by rotating the adjusting nut of the turnbuckle 6 to make the tension of the auxiliary suspension units on both sides balanced; when the distance between the main suspension unit and the auxiliary suspension mounting point 7 needs to be greatly adjusted, it can be adjusted by extending the tie rod assembly 4, adjusting the telescopic position of the inner cylinder 44 in the sleeve 43, so that the positioning hole 441 of the inner cylinder 44 is aligned with the corresponding adjusting hole 431 of the sleeve 43, and the fastening bolt 45 is inserted to lock the telescopic length.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A three-point suspension fitting for a tubular busbar, characterized in that, It includes a main suspension unit and auxiliary suspension units that are arranged on both sides of the main suspension unit and connected to it. The axes of the main suspension unit and the auxiliary suspension unit are both arranged on the vertical symmetrical plane of the tubular busbar. The auxiliary suspension unit includes a mounting plate assembly (3), an extension rod assembly (4), a shock absorber assembly (5), a turnbuckle (6), and an auxiliary suspension hanging point (7) arranged sequentially from the main suspension unit to the outside. The mounting plate assembly (3) is adjustablely installed on the main suspension unit. The mounting plate assembly (3) is threadedly connected to the extension rod assembly (4). The extension rod assembly (4) is a telescopic structure. The shock absorber assembly (5) is fixedly connected to the other side of the extension rod assembly (4). The turnbuckle (6) is fixedly connected to the other side of the shock absorber assembly (5). The auxiliary suspension hanging point (7) is hinged to the other side of the turnbuckle (6).

2. The tubular busbar three-point suspension hardware according to claim 1, characterized in that, The main suspension unit includes a main suspension point (1) and an insulating bushing (2). The main suspension point (1) has a hanging hole (11) in the center of the top. The hanging hole (11) is used to connect with the insulator string. The bottom is provided with an arc-shaped clamping groove (12). The tubular busbar passes through the arc-shaped clamping groove (12) and is locked and fixed by bolts. The inner wall of the arc-shaped clamping groove (12) is pasted with a high-strength insulating bushing (2).

3. The tubular busbar three-point suspension hardware according to claim 1, characterized in that, The mounting plate assembly (3) includes an L-shaped adjusting plate (31), a pin (32), a locking nut (33), and an angle adjustment structure. The L-shaped adjusting plate (31) is divided into a vertical section and a horizontal section. The vertical section has a through hole, and the main suspension hanging point (1) opposite to the through hole has a connecting hole on its side wall. The pin (32) passes through the connecting hole and the through hole of the vertical section to realize the rotational connection between the L-shaped adjusting plate (31) and the main suspension hanging point (1). After adjustment, the connection is fixed by the locking nut (33). The horizontal section of the L-shaped adjusting plate (31) has an internal thread hole for connecting with the extension rod assembly (4).

4. The tubular busbar three-point suspension hardware according to claim 3, characterized in that, The angle adjustment structure includes an angle scale (34) and a pointer (35). The angle scale (34) is located outside the connection hole, and the pointer (35) is a thin metal rod welded to the outer wall of the vertical section of the L-shaped adjustment plate (31), and the pointer points to the angle scale (34).

5. A tubular busbar three-point suspension fitting according to claim 4, characterized in that, The extension rod assembly (4) includes an external threaded rod (41), a lock nut (42), a sleeve (43), an inner cylinder (44), and a fastening bolt (45). One end of the external threaded rod (41) is threadedly connected to the internal threaded hole of the horizontal section of the L-shaped adjusting plate (31) and fixed by the lock nut (42). The other end of the external threaded rod (41) is fixedly connected to the sleeve (43). The inner cylinder (44) is movably connected inside the sleeve (43). Multiple sets of adjusting holes (431) are opened along the axial direction on the outer wall of the sleeve (43). The inner cylinder (44) is provided with a positioning hole (441) at the corresponding position. The fastening bolt (45) passes through the adjusting hole (431) and the positioning hole (441) to lock the extension length.

6. A three-point suspension fitting for a tubular busbar according to claim 5, characterized in that, The shock-absorbing and buffering assembly (5) includes a buffer sleeve (51), a buffer spring (52), a connecting plate (53), a damper (54), a guide rod (55), and a hanging ring (56). One end of the buffer sleeve (51) is fixedly connected to the inner cylinder (44) of the extension rod assembly (4), and the other end is an open structure. The buffer spring (52) is located inside the buffer sleeve (51). One end of the buffer spring (52) away from the opening is fixedly connected to the inner wall of the buffer sleeve (51), and the other end is fixedly connected to the connecting plate (53). The buffer spring (52) is equipped with a damper (54), which is fixedly connected between the inner wall of the buffer sleeve (51) and the connecting plate (53). The connecting plate (53) is fixedly connected to a guide rod (55) on the side near the opening structure. The guide rod (55) extends out of the buffer sleeve (51) and is fixedly connected to a hanging ring (56). The hanging ring (56) is connected to a turnbuckle (6). The opening end of the buffer sleeve (51) is provided with an inner folded boss. The guide rod (55) is slidably connected to the inner wall of the inner folded boss.

7. A tubular busbar three-point suspension hardware according to claim 6, characterized in that, The hook at one end of the turnbuckle (6) is hinged to the hanging ring (56) of the shock-absorbing buffer assembly (5), and the other end is connected to the auxiliary suspension point (7) through the hinge seat.

8. A three-point suspension fitting for a tubular busbar according to claim 1, characterized in that, An installation hole (71) is provided at the center of the top of the auxiliary suspension point (7). The installation hole (71) is connected to the hinge seat of the turnbuckle (6). An insulating bushing (2) is pasted on the inner wall of the auxiliary suspension point (7).

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