Grinding machine for inner wall of super-long pipe

By introducing a track, movable frame, and threaded connecting rod structure into the ultra-long pipe inner wall grinding machine, the problems of insufficient limit and non-adjustable size are solved, achieving a more stable and adaptable grinding effect.

CN224223440UActive Publication Date: 2026-05-12SHANDONG HONGSHUO LIGHTWEIGHT MATERIALS CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANDONG HONGSHUO LIGHTWEIGHT MATERIALS CO LTD
Filing Date
2025-02-11
Publication Date
2026-05-12

AI Technical Summary

Technical Problem

In existing technologies, the track's limiting effect on the rollers is weak, resulting in an unstable grinding process. Furthermore, the grinding head size is not adjustable, making it unsuitable for pipes of different diameters.

Method used

An ultra-long pipe inner wall grinding machine was designed, which adopts a track, movable frame, first support wheel and threaded connecting rod structure to enhance the limiting effect, and can adapt to pipes of different diameters by adjusting the length of the connecting rod.

Benefits of technology

It improves the stability of the grinding process and can adapt to pipes of various diameters, thus enhancing the applicability of the equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of polishers, in particular to an ultra-long pipe inner wall polisher which comprises a rail arranged in the left-right direction, a movable frame movably connected to the rail, a polishing motor fixedly connected to the movable frame and a polishing piece connected to an output shaft of the polishing motor. The movable frame comprises a movable block and a rod part fixedly connected to the upper portion of the movable block. Side plates are arranged on the front side and the rear side of the rod part. Moving wheels matched with the rails are arranged at the bottoms of the movable blocks. The bottom ends of the rod part and the side plates are in contact connection with rotatable first supporting wheels; through the arrangement of the track, the movable frame and the first supporting wheels, the limiting effect on the movable frame is better, and the stability in the polishing process is better.
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Description

Technical Field

[0001] This utility model relates to the field of grinding machine technology, specifically a grinding machine for the inner wall of ultra-long pipes. Background Technology

[0002] Application No. 201921970203.8 discloses a general-purpose long pipe grinding and rust removal machine, including a transmission mechanism and a grinding mechanism. The grinding mechanism includes a grinding motor, a grinding rod, and a grinding head. One end of the grinding rod is connected to the grinding motor, and the other end is connected to the grinding head. During operation, the grinding head is inserted into the long pipe, and the grinding motor drives the grinding head to rotate circumferentially to grind the inner surface of the long pipe. The grinding mechanism also includes a motor bracket, on which the grinding motor is mounted. A roller is provided at the lower end of the motor bracket, which can drive the grinding mechanism to move horizontally.

[0003] The disadvantages of the patent solution with application number 201921970203.8 are: 1. The limiting effect of the track on the roller is weak, and the stability of the grinding process is poor; 2. The size of the grinding head is not adjustable and cannot be adapted to pipes of various diameters. Utility Model Content

[0004] The main purpose of this utility model is to provide an ultra-long pipe inner wall grinding machine to solve the problems of weak limiting effect of the track on the roller, poor stability of the grinding process, and non-adjustable size of the grinding head in the above-mentioned prior art, which cannot adapt to pipes of various diameters.

[0005] To achieve the above objectives, this utility model provides an ultra-long pipe inner wall grinding machine, including a track arranged in the left-right direction, a movable frame movably connected to the track, a grinding motor fixedly connected to the movable frame, and a grinding disc connected to the output shaft of the grinding motor. The movable frame includes a movable block and a rod fixedly connected to the upper part of the movable block, with side plates on the front and rear sides of the rod. The bottom of the movable block is provided with a moving wheel that cooperates with the track. The bottom ends of the rod and the side plates are both in contact with a rotatable first support wheel.

[0006] Furthermore, the output shaft of the grinding motor is fixedly connected to a connecting column, one end of a connecting rod is threaded to the side of the connecting column, the other end of the connecting rod is fixedly connected to a connecting plate, and the connecting plate is fixedly connected to a grinding disc.

[0007] Furthermore, the track includes two opposing horizontal plates, with a U-shaped groove on the side of the two horizontal plates that is close to each other for the moving wheels to travel.

[0008] Furthermore, the two ends of the first chain are fixedly connected to the left and right sides of the movable block, and the first sprocket and the second sprocket are rotatably connected to the left and right ends of the track. The first sprocket and the second sprocket are connected to the first chain, and the first sprocket is driven by a moving motor.

[0009] Furthermore, the mobile motor is connected to a reducer, and the output shaft of the reducer is fixedly connected to a third sprocket. The third sprocket is connected to the first sprocket via a second chain.

[0010] Furthermore, a second support wheel seat is fixedly connected to the bottom of the end of the rod near the grinding motor, and a second support wheel is rotatably connected to the second support wheel seat.

[0011] This invention improves the limiting effect of the movable frame and enhances the stability of the grinding process by setting up a track, a movable frame, and a first support wheel. By setting up a threaded connecting rod and a connecting column, the length of the connecting rod extending outward can be adjusted, thus making it suitable for pipes of different diameters. Attached Figure Description

[0012] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0013] Figure 1 This is a schematic diagram of the structure of the ultra-long pipe inner wall grinding machine in the embodiment;

[0014] Figure 2 This is a schematic diagram of the structure at the moving wheel in the embodiment;

[0015] Figure 3 This is a schematic diagram of the structure at the first support wheel in the embodiment;

[0016] Figure 4 This is a schematic diagram of the structure at the moving motor in the embodiment;

[0017] In the diagram: 1. Track; 101. Horizontal plate; 102. U-shaped groove; 2. Movable frame; 201. Movable block; 202. Rod; 203. Side plate; 204. Moving wheel; 3. Grinding motor; 4. Grinding disc; 5. First support wheel; 6. Connecting column; 7. Connecting rod; 8. Connecting plate; 9. First chain; 10. First sprocket; 11. Second sprocket; 12. Moving motor; 13. Reducer; 14. Third sprocket; 15. Second chain; 16. Second support wheel. Detailed Implementation

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] like Figures 1 to 4As shown, according to an embodiment of the present invention, an ultra-long pipe inner wall grinding machine is provided, including a track 1 arranged in the left-right direction, a movable frame 2 movably connected to the track 1, a grinding motor 3 fixedly connected to the movable frame 2, and a grinding disc 4 connected to the output shaft of the grinding motor 3. The movable frame 2 includes a movable block 201 and a rod 202 fixedly connected to the upper part of the movable block 201. Side plates 203 are provided on the front and rear sides of the rod 202. The bottom of the movable block 201 is provided with a moving wheel 204 that cooperates with the track 1. The bottom ends of the rod 202 and the side plates 203 are both contacted and connected to a rotatable first support wheel 5. The first support wheel 5 is rotatably connected to a support column, and the support column is fixedly connected to the track 1.

[0020] The track 1 includes two horizontal plates 101 arranged opposite each other, and a U-shaped groove 102 is provided on the side of the two horizontal plates 101 that is close to each other for the moving wheel 204 to travel.

[0021] The two ends of the first chain 9 are fixedly connected to the left and right sides of the movable block 201. The first sprocket 10 and the second sprocket 11 are rotatably connected to the left and right ends of the track 1. The first sprocket 10 and the second sprocket 11 are connected to the first chain 9. The first sprocket 10 is driven by a moving motor 12. The moving motor 12 drives the first sprocket 10 to rotate forward or backward, which can drive the movable frame 2 to move left and right along the track 1, thereby changing the grinding position.

[0022] The mobile motor 12 is connected to the reducer 13. The output shaft of the reducer 13 is fixedly connected to the third sprocket 14. The third sprocket 14 is connected to the first sprocket 10 through the second chain 15.

[0023] The installation of track 1, movable frame 2, and first support wheel 5 provides better limiting effect for movable frame 2 and improves the stability of the grinding process.

[0024] In some embodiments, the output shaft of the grinding motor 3 is fixedly connected to a connecting post 6, one end of a connecting rod 7 is threadedly connected to the side of the connecting post 6, the other end of the connecting rod 7 is fixedly connected to a connecting plate 8, and the connecting plate 8 is fixedly connected to a grinding disc 4.

[0025] In some embodiments, a second support wheel seat is fixedly connected to the bottom of the rod 202 near the grinding motor 3, and a second support wheel 16 is rotatably connected to the second support wheel seat.

[0026] By setting threaded connecting rod 7 and connecting post 6, the length of the connecting rod 7 extending outward can be adjusted, thus making it suitable for pipes of different diameters.

[0027] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A grinding machine for the inner wall of an extra-long pipe, comprising a track (1) arranged in a left-right direction, a movable frame (2) movably connected to the track (1), a grinding motor (3) fixedly connected to the movable frame (2), and a grinding disc (4) connected to the output shaft of the grinding motor (3), characterized in that, The movable frame (2) includes a movable block (201) and a rod (202) fixedly connected to the upper part of the movable block (201). The rod (202) has side plates (203) on its front and rear sides. The bottom of the movable block (201) is provided with a moving wheel (204) that cooperates with the track (1). The bottom ends of the rod (202) and the side plates (203) are both connected to a rotatable first support wheel (5).

2. The ultra-long pipe inner wall grinding machine as described in claim 1, characterized in that, The output shaft of the grinding motor (3) is fixedly connected to a connecting column (6), and one end of a connecting rod (7) is threadedly connected to the side of the connecting column (6). The other end of the connecting rod (7) is fixedly connected to a connecting plate (8), and a grinding disc (4) is fixedly connected to the connecting plate (8).

3. The ultra-long pipe inner wall grinding machine as described in claim 1, characterized in that, The track (1) includes two horizontal plates (101) arranged opposite each other, and a U-shaped groove (102) is provided on the side of the two horizontal plates (101) that is close to each other for the moving wheel (204) to travel.

4. The ultra-long pipe inner wall grinding machine as described in claim 1, characterized in that, The two ends of the first chain (9) are fixedly connected to the left and right sides of the movable block (201). The first sprocket (10) and the second sprocket (11) are rotatably connected to the left and right ends of the track (1). The first sprocket (10) and the second sprocket (11) are connected to the first chain (9). The first sprocket (10) is driven by a moving motor (12).

5. The ultra-long pipe inner wall grinding machine as described in claim 4, characterized in that, The mobile motor (12) is connected to a reducer (13), and the output shaft of the reducer (13) is fixedly connected to a third sprocket (14). The third sprocket (14) is connected to a first sprocket (10) via a second chain (15).

6. The ultra-long pipe inner wall grinding machine as described in claim 1, characterized in that, The bottom of the rod (202) near the grinding motor (3) is fixedly connected to a second support wheel seat, and a second support wheel (16) is rotatably connected to the second support wheel seat.