Basin-type insulator hoisting device

Abstract

The invention discloses a basin-type insulator hoisting device which comprises a gravity center adjusting assembly, a vertical rod and a fixing cylinder which are sequentially arranged from top to bottom. The gravity center adjusting assembly comprises a horizontally-arranged lead screw, a lead screw base rotationally connected with the lead screw, a lead screw nut in threaded connection with the lead screw and a hanging ring fixed to the lead screw nut. The top end of the vertical rod is fixed with the lead screw seat through a connecting piece; the fixing cylinder is used for plugging and fastening a cylindrical contact seat at the bottom of the basin-type insulator. The lifting ring is driven to continuously and controllably move in the horizontal direction through a precise transmission mechanism formed by the lead screw and the lead screw nut, so that the lifting gravity center is rapidly and accurately adjusted. The structure solves the technical problems that in a traditional hoisting mode, repeated trial hoisting and dismounting are needed to find the gravity center, so that the working efficiency is low, installation deflection is easily caused by inaccurate centering, and the surface of an insulator is easily damaged due to frequent operation.

Description

Technical Field

[0001] This invention relates to the field of high-voltage electrical technology, and more specifically to a basin-type insulator hoisting device. Background Technology

[0002] As a core component of gas-insulated metal-enclosed switchgear (GIS), the pot-type insulator undertakes the crucial functions of structural support, electrical insulation, and gas chamber separation. It is typically made of epoxy resin and has a metal contact seat coaxially fixed to its inner bottom surface for connection with the conductor. During GIS assembly and maintenance, frequent hoisting operations of the pot-type insulator are required to ensure its precise positioning within the gas chamber.

[0003] Currently, common hoisting methods often employ simple lifting tools or universal hooks, operating through direct or indirect connections to the hoisting holes on the insulator. However, these existing hoisting methods still have significant shortcomings in practical applications: First, due to the asymmetrical structure or uneven distribution of internal inserts of the pot-type insulator, its center of gravity is often difficult to determine visually. Operators often need to repeatedly lift and observe its horizontal posture to find the center of gravity, and repeatedly disassemble and adjust the connection position of the lifting tool and the hoisting hole. This process is not only time-consuming and labor-intensive, but also relies on manual experience, making it difficult to guarantee positioning accuracy and easily leading to insulator axis tilting after installation. Second, repeated lifting, lowering, and adjustment significantly prolong the operation time and reduce assembly efficiency, a problem that is particularly prominent during batch installations or maintenance with tight schedules. More importantly, pot-type insulators are brittle materials with weak impact resistance. Frequent lifting and collisions greatly increase the risk of surface scratches and internal micro-cracks, potentially damaging insulation performance and mechanical strength, and affecting the long-term operational reliability of the equipment.

[0004] Therefore, how to provide a new pot-type insulator hoisting device that can achieve precise centering and leveling without repeated disassembly and trial hoisting, while also significantly shortening the operation time and effectively avoiding damage to the insulators caused by improper operation, is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the present invention provides a basin-type insulator hoisting device, which aims to solve the problems of low efficiency and risk of collision caused by repeated trial hoisting to find the center of gravity, as well as the technical problems of installation deviation caused by inaccurate hoisting alignment.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A basin-type insulator hoisting device, wherein a cylindrical contact seat is coaxially fixed on the inner bottom surface of the basin-type insulator, comprising: a center of gravity adjustment component, a vertical rod and a fixing cylinder arranged sequentially from top to bottom; The center of gravity adjustment assembly includes a lead screw seat, a lead screw, a lead screw nut, and a lifting eye. The lead screw is horizontally arranged; the lead screw is axially limited and rotatably connected to the lead screw seat; the lead screw nut is threadedly connected to the lead screw; and the lifting eye is fixedly connected to the lead screw nut. The top of the upright is fixedly connected to the lead screw seat via a connector; The fixed cylinder is fixedly connected to the bottom end of the upright, and the axis of the fixed cylinder is arranged parallel to the axis of the lead screw. The outer circumferential surface of the contact seat is inserted and fastened in the fixed cylinder sleeve.

[0007] Therefore, the center-of-gravity adjustment component of this invention achieves continuous, linear, and controllable precision adjustment of the lifting ring position through a screw-screw-nut transmission mechanism. This design allows operators to precisely move the suspension point of the lifting ring simply by rotating the screw without disassembling or changing the lifting holes, thereby quickly aligning the lifting point with the vertical line of the theoretical center of gravity of the basin insulator. This mechanism completely avoids the inefficiency and human error caused by repeated trial lifting and manual movement of the lifting point in traditional lifting, significantly improving the alignment and stability of the lifting. Simultaneously, this component supports real-time fine-tuning in mid-air. If the insulator's posture is found to be uneven after lifting, it can be corrected immediately without needing to be readjusted upon landing, greatly shortening the assembly cycle and improving operational continuity. Furthermore, the screw drive has a self-locking characteristic, reliably locking at any position to prevent the lifting ring from slipping during lifting, further ensuring the safety and controllability of the lifting process.

[0008] Preferably, the connector includes a crossbeam and connecting columns. The top of the upright is fixedly connected to the middle position of the crossbeam. The two connecting columns are located on both sides of the upright and are fixedly connected to the crossbeam. The lead screw seats corresponding to the two center of gravity adjustment components are fixedly connected to the two connecting columns respectively.

[0009] Preferably, the lead screw seat includes a lead screw seat body and end caps. The lead screw seat body is elongated and has a mounting groove extending through both ends of its top end. There are two end caps, each fixedly connected to both ends of the lead screw seat body. The lead screw is located in the mounting groove and its two ends are rotatably connected to the two end caps respectively. Both ends of the lead screw extend through their corresponding end caps, and its exposed end is connected to an external power source for transmission. The connecting column is fixedly connected to the lead screw seat body.

[0010] Preferably, the lead screw nut is slidably connected to the mounting groove.

[0011] Preferably, it also includes a connecting block, the first end of which is fixedly connected to the side wall of the upright near its bottom end, and the second end of which is fixedly connected to the fixing cylinder.

[0012] Preferably, the fixed cylinder includes a fixed disk and a sleeve that is fitted and fixed on the outer peripheral surface of the fixed disk. The second end of the connecting block is fixedly connected to the disk surface of the fixed disk, and the outer peripheral surface of the contact seat is inserted and fixed inside the sleeve.

[0013] Preferably, protective pads are laid at the contact points between the sleeve and the contact seat.

[0014] Preferably, the first end of the contact seat is away from the inner bottom surface of the basin insulator and contacts and abuts against the second surface of the fixed disk.

[0015] Preferably, the second surface of the fixed plate is fixedly connected with a protective ring arranged opposite to the first end of the contact seat.

[0016] Preferably, the inner bottom surface of the basin insulator has a process hole along its axis, and also includes a fixing bolt. The fixing plate has a screw through hole arranged opposite to the process hole. The screw end of the fixing bolt passes through the screw through hole and the process hole in sequence and is locked by a nut.

[0017] As can be seen from the above technical solution, compared with the prior art, the present invention discloses a basin-type insulator hoisting device, which has the following beneficial effects: it realizes continuous, linear, and controllable adjustment of the position of the lifting ring without repeatedly disassembling the lifting equipment or conducting trial hoisting; it supports real-time fine-tuning in the air, and if the insulator is found to be tilted during hoisting, it can be adjusted immediately without landing; the screw drive has a self-locking characteristic and can be locked at any position to prevent the lifting ring from slipping and improve safety; it significantly improves the hoisting centering and stability, reduces human error, and improves assembly efficiency. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 The attached figure is a structural schematic diagram of a basin-type insulator hoisting device (equipped with basin-type insulators) provided by the present invention. Figure 2 The attached figure is a rear view of a basin-type insulator hoisting device provided by the present invention; Figure 3 The attached figure is a half-sectional schematic diagram of a basin-type insulator hoisting device provided by the present invention; Figure 4 for Figure 3 Enlarged view of section A in the middle; Figure 5 The attached figure is a schematic diagram of the center of gravity adjustment component and some connecting parts provided by the present invention in the assembled state; Figure 6 for Figure 5 Enlarged view of section B in the middle; Figure 7 for Figure 5A magnified view of point C in the middle section.

[0020] Wherein: 1-Pot insulator; 2-Center for gravity adjustment assembly; 3-Upright pole; 4-Fixing cylinder; 5-Connector; 6-Fixing bolt; 7-Connecting block; 11-Contact seat; 21-Screw seat; 22-Screw; 23-Screw nut; 24-Lifting ring; 41-Fixing disc; 42-Sleeve; 43-Protective pad; 44-Protective ring; 51-Crossbeam; 52-Connecting column; 53-Reinforcing plate; 211-Screw seat body; 212-Support end cap; 213-Limiting end cap; 214-Radial ball bearing; 215-Thrust bearing; 216-Bearing support ring; 217-Hexagonal cap; 218-Limiting ring; 410-Screw through hole. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] See appendix Figure 1 To be continued Figure 7 The present invention discloses a basin-type insulator hoisting device. A cylindrical contact seat 11 is coaxially fixed on the bottom surface of the basin-type insulator 1, including: a center of gravity adjustment component 2, a vertical rod 3 and a fixing cylinder 4 arranged from top to bottom. The center of gravity adjustment assembly 2 includes a lead screw seat 21, a lead screw 22, a lead screw nut 23, and a lifting ring 24. The lead screw 22 is arranged horizontally. The lead screw 22 is axially limited and rotatably connected to the lead screw seat 21. The lead screw nut 23 is threadedly connected to the lead screw 22. The lifting ring 24 is fixedly connected to the lead screw nut 23. The top of the upright 3 is fixedly connected to the lead screw seat 21 via the connector 5; The fixed cylinder 4 is fixedly connected to the bottom end of the upright 3. The axis of the fixed cylinder 4 is arranged parallel to the axis of the lead screw 22. The outer circumferential surface of the contact seat 11 is inserted and fastened inside the fixed cylinder 4.

[0023] In this embodiment, the connector 5 includes a crossbeam 51 and a connecting column 52. The top of the upright 3 is fixedly connected to the middle position of the crossbeam 51. The two connecting columns 52 are located on both sides of the upright and are fixedly connected to the crossbeam 51. The lead screw seats 21 corresponding to the two center of gravity adjustment components 2 are fixedly connected to the two connecting columns 52 respectively.

[0024] Specifically, the top end of the connecting column 52 is fixedly connected to the bottom end of the lead screw seat 21, and the connecting piece 5 also includes a reinforcing plate 53, which is fixedly connected between the cylindrical surface of the connecting column 52 and the bottom end surface of the lead screw seat 21.

[0025] In one embodiment, the lead screw seat 21 includes a lead screw seat body 211 and end caps. The lead screw seat body 211 is elongated and has a mounting groove extending through both ends of its top end. There are two end caps, which are fixedly connected to both ends of the lead screw seat body 211. The lead screw 22 is located in the mounting groove and its two ends are rotatably connected to the two end caps respectively. Both ends of the lead screw 22 extend through their corresponding end caps, and its exposed end is connected to an external power source for transmission. The connecting post 52 is fixedly connected to the lead screw seat body 211.

[0026] Specifically, the two ends of the lead screw seat body 211 are located on both sides of the connecting column 52, and its first end is located above the fixed cylinder 4. A support end cap 212 is fixedly connected to the first end of the lead screw seat body 211. A radial ball bearing 214 is embedded in the end face of the support end cap 212 facing the lead screw seat body 211. The first end of the lead screw 22 is fixedly connected to the inner ring surface of the radial ball bearing 214. A limit end cap 213 is fixedly connected to the second end of the lead screw seat body 211. A cylindrical limit groove is opened on the end face of the limit end cap 213 facing the lead screw seat body 211. A limit ring mounting groove penetrating the wall of the mounting groove is opened on the second end of the lead screw seat body 211. A limit ring 218 is fixedly connected in the limit ring mounting groove. One end of the limit ring 218 protrudes from the second end face of the lead screw seat body 211. The limit end cap 213 faces the end face of the lead screw seat body 211. The end face of 1 is provided with a second limiting groove corresponding to the limiting ring 218 and penetrating the inner wall of the first limiting groove. The limiting end cover 213 is inserted into the limiting ring 218 through the second limiting groove. A bearing support ring 216 is arranged between the limiting ring 218 and the bottom surface of the first limiting groove, and thrust bearings 215 are arranged on both sides of the bearing support ring 216. The support surfaces of the two thrust bearings 215 away from the bearing support ring 216 respectively contact and abut with the bottom surfaces of the limiting ring 218 and the first limiting groove. The limiting ring 218 is provided with a lead screw through hole along its axis. The second end of the lead screw 22 passes through the lead screw through hole, passes through the limiting end cover 213, and is exposed on the outside of the lead screw seat 21. The wall surface of the lead screw 22 near its second end is pinned to the bearing support ring 216. A hexagonal cap 217 is coaxially fixed to the second end of the lead screw 22. The hexagonal cap 217 is connected to an external power source for transmission.

[0027] More specifically, the wall of the lead screw 22 near its second end is detachably connected to the bearing support ring 216 by a flexible cylindrical pin.

[0028] More specifically, the second end of the lead screw 22 is detachably connected to the hexagonal cap 217 via a flexible cylindrical pin.

[0029] Preferably, the lead screw nut 23 is slidably connected to the mounting groove. This effectively prevents the lead screw nut 23 from rotating with the lead screw 22, ensuring that it moves smoothly only along the axial direction, thereby improving the accuracy and reliability of the position adjustment of the lifting ring 24, while reducing the risk of wear and jamming of moving parts.

[0030] In one embodiment, a connecting block 7 is also included, with its first end fixedly connected to the side wall of the upright 3 near its bottom end, and its second end fixedly connected to the fixing cylinder 4.

[0031] In one embodiment, the fixed cylinder 4 includes a fixed disk 41 and a sleeve 42 that is fitted and fixed to the outer peripheral surface of the fixed disk 41. The second end of the connecting block 7 is fixedly connected to the disk surface of the fixed disk 41, and the outer peripheral surface of the contact seat 11 is inserted and fixed inside the sleeve 42. Thus, the sleeve 42 structure facilitates the quick insertion and positioning of the contact seat 11, and the split design also facilitates processing, manufacturing, and component replacement.

[0032] In some embodiments, protective pads 43 are provided at the contact points between the sleeve 42 and the contact seat 11. This effectively reduces contact stress and direct friction between the metal components by using a cushioning material, preventing scratches or damage to the surface of the contact seat 11 during insertion and hoisting, thus improving operational safety and the protection of the insulator.

[0033] Specifically, the protective pad 43 is barrel-shaped and detachably connected to the sleeve 42.

[0034] In some specific embodiments, the first end of the contact seat 11 is away from the inner bottom surface of the basin insulator 1 and contacts and abuts against the second surface of the fixed disk 41.

[0035] In some other specific embodiments, a protective ring 44 is fixedly connected to the second surface of the fixed disk 41, which is arranged opposite to the first end of the contact 11. This provides a buffer and protective interface for the end face of the contact 11, preventing it from having a hard collision or being scratched by the fixed disk 41 when it comes into contact or is subjected to force, and further enhancing the device's ability to protect the critical components of the insulator.

[0036] Specifically, the protective pad 43 and the protective ring 44 are made of nylon.

[0037] In this embodiment, the inner bottom surface of the basin-type insulator 1 has a process hole along its axis, and it also includes a fixing bolt 6. The fixing plate 41 has a screw through hole 410 arranged opposite to the process hole 10. The screw end of the fixing bolt 6 passes through the screw through hole 410 and the process hole in sequence and is locked by a nut. Thus, a reliable mechanical locking guarantee is provided between the insulator and the hoisting device, effectively preventing accidental loosening during the hoisting process. The structure is simple and easy to assemble and disassemble.

[0038] The method of using a basin-type insulator hoisting device provided in this embodiment is as follows: Installation and Fixing: Align the cylindrical contact 11 at the bottom of the basin insulator 1 and insert it into the sleeve 42 of the fixing cylinder 4 until the end of the contact 11 contacts the protective ring 44. Then, pass the screw of the fixing bolt 6 through the screw through hole 410 on the fixing plate 41 and the process hole 10 on the inner bottom surface of the basin insulator 1 in sequence, and tighten the nut on the outside of the process hole 10 to reliably fix the basin insulator 1 to the hoisting device.

[0039] Connecting the lifting equipment and initial adjustment: Connect the hook of the lifting equipment (such as a crane or hoist) to the lifting rings 24 on the two center of gravity adjustment components 2.

[0040] Precise adjustment of center of gravity (fine-tuning in mid-air): If the basin insulator 1 tilts when initially suspended, the operator can use a wrench or other tools to rotate the exposed hexagonal cap 217 of the lead screw 22 on the side that needs adjustment.

[0041] Rotating the lead screw 22 will drive the lead screw nut 23, which is threaded to it, to move horizontally along the axis of the lead screw 22, thereby causing the lifting ring 24 fixed thereon to move synchronously.

[0042] By adjusting the relative positions of the two lifting rings 24, the suspension point of the entire device (including the pot insulator 1) can be changed until the axis of the pot insulator 1 is in the ideal lifting posture of being completely horizontal. The self-locking characteristic of the lead screw 22 ensures that the adjusted position is locked.

[0043] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0044] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A basin-type insulator hoisting device, wherein a cylindrical contact seat (11) is coaxially fixed to the inner bottom surface of the basin-type insulator (1), characterized in that, include: The center of gravity adjustment assembly (2), the upright (3) and the fixing cylinder (4) are arranged from top to bottom. The center of gravity adjustment assembly (2) includes a lead screw seat (21), a lead screw (22), a lead screw nut (23), and a lifting ring (24). The lead screw (22) is arranged horizontally. The lead screw (22) is axially limited and rotatably connected to the lead screw seat (21). The lead screw nut (23) is threadedly connected to the lead screw (22). The lifting ring (24) is fixedly connected to the lead screw nut (23). The top end of the upright (3) is fixedly connected to the lead screw seat (21) via a connector (5); The fixed cylinder (4) is fixedly connected to the bottom end of the upright (3), the axis of the fixed cylinder (4) is arranged parallel to the axis of the lead screw (22), and the outer circumferential surface of the contact seat (11) is inserted and fastened in the fixed cylinder (4).

2. The basin-type insulator hoisting device according to claim 1, characterized in that, The connector (5) includes a crossbeam (51) and a connecting column (52). The top of the upright (3) is fixedly connected to the middle position of the crossbeam (51). The two connecting columns (52) are located on both sides of the upright and are fixedly connected to the crossbeam (51). The lead screw seats (21) corresponding to the two center of gravity adjustment components (2) are fixedly connected to the two connecting columns (52) respectively.

3. The basin-type insulator hoisting device according to claim 2, characterized in that, The lead screw seat (21) includes a lead screw seat body (211) and end caps. The lead screw seat body (211) is long and has a mounting groove that runs through both ends of it. There are two end caps, which are fixedly connected to both ends of the lead screw seat body (211). The lead screw (22) is located in the mounting groove and its two ends are rotatably connected to the two end caps. Both ends of the lead screw (22) run through the corresponding end caps, and its exposed end is connected to an external power source. The connecting column (52) is fixedly connected to the lead screw seat body (211).

4. The basin-type insulator hoisting device according to claim 3, characterized in that, The lead screw nut (23) is slidably connected to the mounting groove.

5. The basin-type insulator hoisting device according to claim 1, characterized in that, It also includes a connecting block (7), the first end of which is fixedly connected to the side wall near the bottom of the upright (3), and the second end of which is fixedly connected to the fixing cylinder (4).

6. A basin-type insulator hoisting device according to claim 5, characterized in that, The fixed cylinder (4) includes a fixed disk (41) and a sleeve (42) fitted and fixed on the outer peripheral surface of the fixed disk (41). The second end of the connecting block (7) is fixedly connected to the disk surface of the fixed disk (41), and the outer peripheral surface of the contact seat (11) is inserted and fixed inside the sleeve (42).

7. A basin-type insulator hoisting device according to claim 6, characterized in that, Protective pads (43) are laid at the contact points between the sleeve (42) and the contact seat (11).

8. A basin-type insulator hoisting device according to claim 7, characterized in that, The first end of the contact seat (11) is away from the inner bottom surface of the basin insulator (1) and contacts and abuts against the second surface of the fixed disk (41).

9. A basin-type insulator hoisting device according to claim 8, characterized in that, The surface of the fixed plate (41) is fixedly connected to a protective ring (44) arranged opposite to the first end of the contact seat (11).

10. A basin-type insulator hoisting device according to claim 6, characterized in that, The inner bottom surface of the basin insulator (1) is provided with a process hole along its axis, and also includes a fixing bolt (6). The fixing plate (41) is provided with a screw through hole (410) arranged opposite to the process hole (10). The screw end of the fixing bolt (6) passes through the screw through hole (410) and the process hole in sequence and is locked by a nut.

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