GIL bus shell inner wall polishing device

Abstract

The invention relates to a GIL bus shell inner wall polishing device which comprises a base, a working feeding mechanism and a floating supporting mechanism, the working feeding mechanism and the floating supporting mechanism are connected to the base in a front-back sliding mode, a telescopic arm extending forwards is fixedly connected to the working feeding mechanism, the floating supporting mechanism comprises a supporting wheel supporting the telescopic arm, and a polishing head is fixedly connected to the front end of the telescopic arm. The polishing head comprises a center frame, a rotating shaft horizontally coupled to the center frame and a rotating shaft motor driving the rotating shaft to rotate, a rotating frame is fixedly connected to the front end of the rotating shaft, a polishing motor is fixedly connected to the rotating frame, and a polishing wheel is fixedly connected to a rotating shaft of the polishing motor. According to the GIL equipment grinding device, a traditional manual grinding mode is completely replaced, the labor intensity and the operation risk are greatly reduced, the grinding efficiency and the quality consistency are remarkably improved, and a powerful guarantee is provided for safe and reliable operation of GIL equipment.

Description

Technical Field

[0001] This invention relates to the field of GIL processing technology, specifically to a grinding device for the inner wall of a GIL busbar housing. Background Technology

[0002] GIL (Gas Insulated Metal Enclosed Transmission Line) busbar housings are typically manufactured using threaded welded pipes, which are formed by spirally welding steel plates. After welding, continuous weld seams remain inside, which are prone to burrs, protrusions, or unevenness, directly affecting the insulation performance and safe operation of the GIL equipment. Since the diameter of threaded welded pipes is generally between 300mm and 900mm, personnel cannot enter the interior for operation, making the grinding of the inner weld seams a technical challenge in the manufacturing process. Traditional manual grinding methods are not only inefficient and labor-intensive, but also struggle to guarantee uniform grinding and consistent surface quality, especially unsuitable for continuous operation on the inner walls of long pipelines. While some existing pipe inner wall grinding devices exist, they often suffer from poor adaptability, difficulty in alignment, and unstable grinding results, particularly in maintaining continuous and stable contact between the grinding head and the inner wall of the busbar housing. Therefore, there is an urgent need for a dedicated inner wall grinding device capable of automated and precise operation. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a grinding device for the inner wall of a GIL busbar housing.

[0004] This invention is achieved through the following technical solution: a grinding device for the inner wall of a GIL busbar housing, comprising a base and a working mechanism and a floating support mechanism slidably connected to the base. The working mechanism has a telescopic arm extending forward, and the floating support mechanism includes a support roller supporting the telescopic arm. A grinding head is fixedly connected to the front end of the telescopic arm. The grinding head includes a central frame, a rotating shaft with a horizontal axis connected to the central frame, and a rotating shaft motor for driving the rotating shaft to rotate. A rotating frame is fixedly connected to the front end of the rotating shaft, and a grinding motor is fixedly connected to the rotating frame. A grinding wheel is fixedly connected to the rotating shaft of the grinding motor.

[0005] In this scheme, the grinding head at the front end of the telescopic arm is inserted into the busbar housing by the sliding connection of the feed mechanism and the floating support mechanism. The grinding motor 56 drives the grinding wheel 57 to rotate and grind the inner wall. At the same time, the rotating shaft motor drives the rotating frame 55 to rotate, thereby driving the grinding motor 56 and the grinding wheel 57 to rotate together along the inner wall of the busbar housing to achieve circumferential grinding.

[0006] As an optimization, the telescopic arm includes a main arm fixedly connected to the feed mechanism, a middle arm inserted into the main arm, and a forearm inserted into the middle arm. The main arm contains a middle arm telescopic cylinder that drives the middle arm to move back and forth, and the middle arm contains a forearm telescopic cylinder that drives the forearm to move back and forth. In this solution, the telescopic mechanism is achieved through the structure of the main arm, middle arm, and forearm, thereby extending the grinding stroke of the grinding head.

[0007] As an optimization, multiple support cylinders evenly distributed circumferentially along the rotation axis are fixedly connected to the central frame. A roller frame is fixedly connected to the telescopic shaft of the support cylinder, and a centering roller is mounted on the roller frame. In this solution, after the grinding head 5 is inserted into the busbar housing, the support cylinder 52 extends, bringing the centering roller against the inner wall of the busbar housing. This adapts to busbar housings of different diameters, ensuring that the grinding wheel maintains appropriate contact pressure with the inner wall and that the movement trajectory of the grinding wheel is coaxial with the busbar housing.

[0008] As an optimization, a rack is fixedly connected to the base, and a working motor and a floating motor are respectively mounted on the working feed mechanism and the floating support mechanism. A working gear that meshes with the rack is fixedly connected to the shaft of the working feed motor, and a floating gear that meshes with the rack is fixedly connected to the shaft of the floating motor. In this solution, the working motor and the floating motor enable the forward and backward movement of the working feed mechanism and the floating support mechanism.

[0009] As an optimization, the working mechanism includes a working base slidably mounted on the base, a guide column fixedly mounted on the working base, and a lifting frame slidably mounted on the guide column. The rear end of the telescopic arm is fixedly connected to the lifting frame. The floating support mechanism includes a floating base slidably mounted on the base, a first screw jack fixedly mounted on the floating base, and a roller support frame fixedly mounted on the lifting shaft of the first screw jack. The roller support frame is connected to the roller support frame, and the roller support frame and the lifting frame move up and down synchronously. In this design, the roller support frame and the lifting frame move up and down synchronously, which facilitates keeping the rotating shaft 54 ​​coaxial with the busbar housing.

[0010] As an optimization, a vertical lead screw is axially connected to the guide column, and the lead screw nut is fixedly connected to the lifting frame. A lifting motor that drives the lead screw to rotate is fixedly connected to the upper end of the guide column. In this solution, the lifting frame is driven to lift by rotating the lead screw through the lifting motor.

[0011] As an optimization, side baffles are fixedly connected to the roller bracket on both sides of the telescopic arm. In this design, the side baffles position the telescopic arm on both sides, preventing it from moving to either side.

[0012] As an optimization, a nylon sheet is fixed to the side of the side baffle near the telescopic arm. The nylon sheet in this design reduces friction with the telescopic arm, facilitating its forward and backward movement.

[0013] As an optimization, several housing support assemblies are also included, located in front of the base. Each housing support assembly includes a ground frame, a support frame vertically slidable onto the ground frame, and a second spiral lift mechanism for driving the support frame up and down. In this design, the housing support assemblies are used to support the busbar housing and simultaneously adjust its height and level.

[0014] As an optimization, multiple guide posts are fixedly connected to the support frame, and guide sleeves adapted to the guide posts are fixedly connected to the ground frame. The guide posts and guide sleeves in this design guide the support frame.

[0015] The beneficial effects of this invention are as follows: First, by setting up a working feed mechanism and a floating support mechanism in coordination, the device ensures stable feeding and reliable support of the grinding head inside the busbar housing, effectively avoiding vibration problems that may occur in long cantilever structures and improving grinding accuracy.

[0016] Secondly, the grinding head adopts a unique rotating frame design, which enables the grinding motor and grinding wheel to rotate circumferentially along the inner wall of the housing. Combined with the axial feed of the telescopic arm, it realizes continuous and comprehensive grinding of the spiral weld seam, covering the inner wall surface without dead angles.

[0017] Third, the device, through its centering roller structure and height adjustment function, can adapt to busbar housings of different diameters, ensuring that the grinding wheel and the inner wall always maintain appropriate contact pressure, thus improving the uniformity of grinding. In addition, the device achieves fully mechanized operation, completely replacing the traditional manual grinding method. This not only significantly reduces labor intensity and operational risks, but also significantly improves grinding efficiency and quality consistency, providing a strong guarantee for the safe and reliable operation of GIL equipment. Attached Figure Description

[0018] Figure 1 This is a front view of the present invention; Figure 2 This is a front view of the telescopic arm of the present invention in its extended state; Figure 3 This is a schematic diagram of the structure of the present invention; Figure 4 This is a structural schematic diagram of the present invention from another angle; Figure 5 This is a schematic diagram of the working feed mechanism of the present invention; Figure 6 This is a front view of the telescopic arm and grinding head of the present invention; Figure 7 This is a schematic diagram of the floating support mechanism of the present invention; Figure 8 This is a schematic diagram of the structure of the housing support assembly of the present invention; As shown in the figure: 1. Base, 2. Feeding mechanism, 3. Telescopic arm, 4. Floating support mechanism, 5. Grinding head, 6. Housing support assembly, 7. Rack, 21. Feeding base, 22. Feeding motor, 23. Guide column, 24. Lifting frame, 25. Lead screw, 26. Lifting motor, 31. Main arm, 32. Middle arm, 33. Forearm, 41. Floating base, 42. Floating motor, 43. First spiral jack, 44. Roller frame, 45. Roller, 46. Side baffle, 51. Center frame, 52. Support cylinder, 53. Roller frame, 54. Rotating shaft, 55. Rotating frame, 56. Grinding motor, 57. Grinding wheel, 61. Ground frame, 62. Guide column, 63. Guide sleeve, 64. Support frame, 65. Second spiral jack. Detailed Implementation

[0019] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0020] like Figures 1-8 As shown, a GIL busbar housing inner wall grinding device of the present invention includes a base 1 and a feed mechanism 2 and a floating support mechanism 4, both slidably connected to the base 1. The base 1 is an elongated strip extending front to back, and at least two longitudinally continuous slide rails are fixed on it to guide the feed mechanism 2 and the floating support mechanism 4. A longitudinally continuous rack 7 is fixed on the base 1 to drive the feed mechanism 2 and the floating support mechanism 4 back and forth.

[0021] like Figure 5 As shown, the feed mechanism 2 includes a feed base 21 that slides back and forth on the base 1, a guide column 23 fixedly connected to the feed base 21, and a lifting frame 24 that slides vertically on the guide column 23. The feed base 21 achieves forward and backward movement guidance by cooperating with the slide rail on the base 1 through a slider.

[0022] A feed motor 22 is fixedly connected to the feed base 21. A feed gear that meshes with the rack 7 is fixedly connected to the shaft of the feed motor 22. The feed gear is driven to rotate by the rotation of the feed motor 22, thereby realizing the forward and backward movement of the feed base 21.

[0023] The lifting frame 24 is wrapped around the outside of the guide column 23 and is vertically guided by the slide rail and the slider. The guide column 23 is axially connected to a vertical lead screw 25. The lead screw nut of the lead screw 25 is fixedly connected to the lifting frame 24. The upper end of the guide column 23 is fixedly connected to a lifting motor 26 that drives the lead screw 25 to rotate, so that the lifting frame 24 is lifted and lowered by the rotation of the lifting motor 26.

[0024] A forward-extending telescopic arm 3 is fixedly connected to the working feed mechanism 2, and the rear end of the telescopic arm 3 is fixedly connected to the lifting frame 24, such as... Figure 6As shown, the telescopic arm 3 includes a large arm 31 fixedly connected to the working mechanism 2, a middle arm 32 inserted into the large arm 31, and a small arm 33 inserted into the middle arm 32. The large arm 31 contains a middle arm telescopic cylinder for driving the middle arm 32 to move back and forth, and the middle arm 32 contains a small arm telescopic cylinder for driving the small arm 33 to move back and forth. In this embodiment, the middle arm telescopic cylinder and the small arm telescopic cylinder can be electric push rods, pneumatic cylinders, or hydraulic cylinders.

[0025] A grinding head 5 is fixedly connected to the front end of the telescopic arm 3, such as... Figure 6 As shown, the grinding head 5 includes a central frame 51, a rotating shaft 54 ​​horizontally connected to the central frame 51, and a rotating shaft motor that drives the rotating shaft 54 ​​to rotate. The central frame 51 is fixed to the front end of the forearm 33 and has a hollow structure. The rotating shaft motor is located inside the central frame 51. The rotating shaft 54 ​​is axially connected to the center position of the front end of the central frame 51. A rotating frame 55 is fixed to the front end of the rotating shaft 54, and a grinding motor 56 is fixed to the rotating frame 55. A grinding wheel 57 is fixed to the rotating shaft of the grinding motor 56. The rotating shaft of the grinding motor 56 is parallel to the rotating shaft 54 ​​and is eccentrically positioned.

[0026] To ensure the coaxiality of the rotating shaft 54 ​​and the busbar housing, a plurality of support cylinders 52 are fixedly connected to the center frame 51, evenly distributed around the circumference of the rotating shaft 54. The telescopic shafts of the support cylinders 52 extend and retract radially along the rotating shaft 54. A roller frame 53 is fixedly connected to the telescopic shaft of the support cylinders 52, and a centering roller is mounted on the roller frame 53. The centering roller can fit against the inner wall of the busbar housing and travel along the length of the busbar housing.

[0027] Since the telescopic shaft is a cantilever structure, a floating support mechanism 4 is set up to achieve the supporting effect, such as... Figure 7 As shown, the floating support mechanism 4 includes a floating base 41 that slides back and forth on the base 1, a first spiral lift 43 fixed on the floating base 41, and a support roller frame 44 fixed on the lifting shaft of the first spiral lift 43. The floating base 41 achieves forward and backward movement guidance by cooperating with the slide rail on the base 1 through the slider.

[0028] A floating motor 42 is fixedly connected to the floating base 41, and a floating gear that meshes with the rack 7 is fixedly connected to the rotating shaft of the floating motor 42. The floating gear is driven to rotate by the rotation of the floating motor 42, thereby realizing the forward and backward movement of the floating base 41.

[0029] A support roller 45 is mounted on the floating base 41, and the support roller frame 44 and the lifting frame 24 rise and fall synchronously. The support roller 45 supports the main arm 31 of the telescopic arm 3.

[0030] Side baffles 46 are fixedly attached to the roller bracket 44 on both sides of the telescopic arm 3. The side baffles position the telescopic arm on both sides to prevent it from moving to the sides. A nylon sheet is fixedly attached to the side of the side baffle 46 near the telescopic arm 3. This reduces friction with the telescopic arm and facilitates the forward and backward movement of the telescopic arm.

[0031] To facilitate the placement of the busbar housing, several housing support assemblies 6 are also provided in front of the base 1. In this embodiment, there are two housing support assemblies 6. The housing support assembly 6 includes a ground frame 61, a support frame 64 that slides vertically on the ground frame 61, and a second spiral lift 65 that drives the support frame 64 to rise and fall. In order to achieve vertical guidance of the support frame 64, multiple guide columns 62 are fixedly connected to the support frame 64, and a guide sleeve 63 that is adapted to the guide columns 62 is fixedly connected to the ground frame 61.

[0032] How to use this invention: In use, the busbar housing is placed on the housing support assembly 6. The height of the telescopic arm 3 and the height of the support frame 64 are adjusted so that the rotating shaft 54 ​​and the busbar housing are kept coaxial. At this time, the floating support mechanism 4 is supported at the front end of the telescopic arm 3.

[0033] The feed mechanism 2 and the floating support mechanism 4 move forward together, inserting the grinding head 5 into the busbar housing. The support cylinder 52 extends, bringing the centering roller into contact with the inner wall of the busbar housing. The grinding motor 56 drives the grinding wheel 57 to rotate and grind the inner wall. At the same time, the rotating shaft motor drives the rotating frame 55 to rotate, thereby causing the grinding motor 56 and the grinding wheel 57 to rotate together along the inner wall of the busbar housing, achieving circumferential grinding.

[0034] The grinding head 5 can be moved forward inside the busbar housing by extending the telescopic arm 3, or the grinding head 5 can be moved forward inside the busbar housing by moving the feed mechanism 2 forward, thereby achieving grinding inside the busbar housing.

[0035] Of course, the above description is not limited to the examples above. Technical features not described in this invention can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solutions of this invention and are not intended to limit this invention. This invention has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this invention do not depart from the spirit of this invention and should also fall within the scope of protection of the claims of this invention.

Claims

1. A GIL bus shell inner wall polishing device, characterized in that: The utility model provides a floating support mechanism and polishing head, which can realize the polishing of the workpiece in the floating state, and the polishing head can rotate and move, so that the workpiece can be polished in the floating state and the rotating state, and the polishing effect is improved.

2. The GIL bus shell inner wall polishing device according to claim 1, characterized in that: The telescopic arm (3) comprises a large arm (31) fixedly connected with the work feeding mechanism (2), a middle arm (32) inserted into the large arm (31), and a small arm (33) inserted into the middle arm (32), the large arm (31) is internally provided with a middle arm telescopic cylinder for driving the middle arm (32) to move forward and backward, and the middle arm (32) is internally provided with a small arm telescopic cylinder for driving the small arm (33) to move forward and backward.

3. The GIL bus shell inner wall polishing device of claim 1, wherein: The center frame (51) is fixedly connected with a plurality of support air cylinders (52) which are uniformly distributed in the circumferential direction of the rotating shaft (54), the telescopic shaft of the support air cylinder (52) is fixedly connected with a roller frame (53), and the roller frame (53) is provided with a centering roller.

4. The GIL bus shell inner wall polishing device of claim 1, wherein: The base (1) is fixedly connected with a rack (7), the work feeding mechanism (2) and the floating support mechanism (4) are respectively provided with a work feeding motor (22) and a floating motor (42), the rotating shaft of the work feeding motor (22) is fixedly connected with a work feeding gear which is engaged with the rack (7), and the rotating shaft of the floating motor (42) is fixedly connected with a floating gear which is engaged with the rack (7).

5. The GIL bus shell inner wall polishing device of claim 1, wherein: The work feeding mechanism (2) comprises a work feeding base (21) which is slidably connected to the base (1), a guide column (23) fixedly connected to the work feeding base (21), and a lifting frame (24) which is vertically slidably connected to the guide column (23), the rear end of the telescopic arm (3) is fixedly connected to the lifting frame (24), the floating support mechanism (4) comprises a floating base (41) which is slidably connected to the base (1), a first screw elevator (43) fixedly connected to the floating base (41), and a roller frame (44) fixedly connected to the lifting shaft of the first screw elevator (43), the roller (45) is shaft-connected to the roller frame (44), and the roller frame (44) and the lifting frame (24) are synchronously lifted.

6. The GIL bus shell inner wall polishing device of claim 5, wherein: The guide column (23) is shaft-connected with a vertical lead screw (25), the nut of the lead screw (25) is fixedly connected to the lifting frame (24), and the upper end of the guide column (23) is fixedly connected with a lifting motor (26) for driving the lead screw (25) to rotate.

7. The GIL bus shell inner wall polishing device of claim 5, wherein: The side baffle (46) is fixedly connected with a nylon sheet on the side close to the telescopic arm (3).

8. The GIL bus shell inner wall polishing device of claim 7, wherein: The side baffle (46) is fixedly connected with a nylon sheet on the side close to the telescopic arm (3).

9. The GIL bus shell inner wall polishing device of claim 1, wherein: Also included are a plurality of shell supporting assemblies (6) arranged in front of the base (1), wherein each shell supporting assembly (6) comprises a ground frame body (61), a supporting frame (64) vertically slidingly connected to the ground frame body (61), and a second screw elevator (65) driving the supporting frame (64) to move up and down.

10. The GIL bus shell inner wall polishing apparatus of claim 9, wherein: A plurality of guide columns (62) are fixedly connected to the supporting frame (64), and a guide sleeve (63) matching the guide columns (62) is fixedly connected to the ground frame body (61).

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