Paint removing device suitable for harmonious series locomotive hollow shaft

By designing a paint removal device suitable for the hollow shafts of Harmony series locomotives, high-pressure water and automated equipment are used to clean the inside and outside of the hollow shafts, solving the problems of low cleaning efficiency and serious pollution in existing technologies, and achieving a highly efficient and environmentally friendly cleaning effect.

CN223655689UActive Publication Date: 2025-12-12CRRC LUOYANG CO LTD
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Patent Information

Application Number
CN202520252210.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-18
Publication Date
2025-12-12
Estimated Expiration
2035-02-18

AI Technical Summary

Technical Problem

In the existing technology, the cleaning and paint removal operation of the hollow shaft of the Harmony series locomotives is inefficient, polluting, and labor-intensive, making it difficult to meet the requirements of efficient and environmentally friendly cleaning.

Method used

A paint removal device suitable for hollow shafts of Harmony series locomotives was designed, including a frame, an inner wall cleaning device, and an outer cleaning device. It is connected to a high-pressure cleaner and a high-pressure pipeline, and uses high-pressure water to automatically clean the inner and outer walls of the hollow shaft. The automated operation is achieved by using a servo motor and an electric slide.

Benefits of technology

It achieves automated cleaning of hollow shafts, improves cleaning efficiency, reduces labor intensity, and uses environmentally friendly high-pressure water as the cleaning medium, thus reducing costs.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

A paint removing device suitable for a harmonious series locomotive hollow shaft belongs to the technical field of locomotive hollow shaft overhaul and comprises a frame body, an inner wall cleaning device, an outer cleaning device and a high-pressure cleaning machine, the frame body clamps and fixes the hollow shaft, the inner wall cleaning device is arranged on the upper portion of the frame body to clean the inner wall of the hollow shaft, and the outer cleaning device is arranged on the lower portion of the frame body to clean the inner wall of the hollow shaft. The outer cleaning device is arranged on one side of the frame body and used for cleaning and paint removing of the outer portion of the hollow shaft, and the inner wall cleaning device and the outer cleaning device are both connected with the high-pressure cleaning machine through high-pressure pipelines. The device has the advantages that the device can be compatible with hollow shafts of harmonious series locomotives, the automation degree is high, the cleaning efficiency is high, and the labor intensity is greatly reduced; high-pressure water is used as a cleaning medium, paint removal of the inner surface and the outer surface of the hollow shaft can be achieved, environment friendliness is achieved, and cost is low.
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Description

TECHNICAL FIELD

[0001] The utility model belongs to locomotive hollow shaft overhauling technical field, concretely relates to a device is removed to paint suitable for harmony series locomotive hollow shaft. BACKGROUND

[0002] The hollow shaft of harmony series locomotive is as an important part of the shape system, and a layer of polyurethane finish and pink primer are coated on the surface, in the process of overhauling, the coating on the surface and inner wall of the axle is completely removed, so as to facilitate the flaw detection and overhauling, and before that, the coating is removed by artificial smearing paint remover or manual polishing, and the operation efficiency is low, the pollution is serious, and the labor intensity is big, therefore, a paint removing device which can meet the cleaning and paint removing requirements and is efficient and environmentally friendly is needed, and it is of great significance to realize the efficient and high-quality maintenance of the hollow shaft of harmony series locomotive. SUMMARY

[0003] In view of the defects in the prior art, the utility model aims at designing a paint removing device suitable for harmony series locomotive hollow shaft, which removes the coating on the surface and inner wall of the hollow shaft of harmony series locomotive, so as to facilitate the flaw detection and overhauling operation.

[0004] To achieve the above object, the utility model adopts the following technical scheme: a paint removing device suitable for harmony series locomotive hollow shaft, comprising: a frame body, an inner wall cleaning device, an external cleaning device and a high-pressure cleaning machine, the frame body clamps and fixes the hollow shaft, the inner wall cleaning device is arranged on the upper part of the frame body and cleans the inner wall of the hollow shaft, the external cleaning device is arranged on one side of the frame body and cleans and removes the paint on the outside of the hollow shaft, and the inner wall cleaning device and the external cleaning device are connected with the high-pressure cleaning machine through high-pressure pipelines.

[0005] The frame body is composed of a chassis and a frame-shaped frame, the frame-shaped frame is vertically arranged on one side of the surface of the chassis, the chassis is provided with a bearing seat, the bearing seat is provided with a transmission shaft, the upper surface of the transmission shaft is provided with a positioning column corresponding to the through hole on the end plate of the hollow shaft, the circumference of the upper surface of the transmission shaft is provided with hollow shaft clamps for fixing the hollow shaft at intervals, the bearing seat and the transmission shaft are connected through bearing B, the lower part of the chassis is provided with a servo motor, and the servo motor is connected with the bottom of the transmission shaft through a belt; the frame-shaped frame is provided with the inner wall cleaning device on the upper part, and the frame-shaped frame is provided with the external cleaning device on the inner side.

[0006] The inner wall cleaning device comprises a pipe placing device, a guide wheel set, an electric sliding table A, a high-pressure pipeline and an inner wall cleaner, one end of the high-pressure pipeline is connected to the upper end of the inner wall cleaner, the other end of the high-pressure pipeline is wound on the pipe placing device through the guide wheel set, the pipe placing device comprises a roller and a motor, one side of the roller is provided with a water inlet and is connected to a high-pressure cleaner through the high-pressure pipeline, the motor drives the roller to rotate so as to drive the inner wall cleaner connected to the high-pressure pipeline to ascend and descend; the electric sliding table A is installed on the upper surface of the frame-shaped frame, and one end of the upper part of the electric sliding table A is provided with the guide wheel set.

[0007] The inner wall cleaner comprises a main body, a rotating nozzle, a guide frame, a supporting wheel, a spring and a tension and release switch, the main body is in a tubular structure, the water inlet at the top of the main body is connected to the high-pressure cleaner through the high-pressure pipeline, the water outlet at the middle of the main body is connected to the rotating nozzle, the high-pressure water sprayed through the rotating nozzle is used to clean the inside of the hollow shaft, the outer wall of the lower part of the main body is respectively provided with the tension and release switch and the guide frame, the guide frame comprises an upper support, a lower support, a guide rod and a supporting rod, the upper support is arranged on the outer wall of the main body, the bottom of the upper support is hingedly connected to the top of the guide rod, the middle part of the guide rod is hingedly connected to the upper end of the supporting rod on the inner side, the lower end of the supporting rod is hingedly connected to the lower support, the lower end of the guide rod is provided with the supporting wheel, the supporting wheel is matched with the inner wall of the hollow shaft to be cleaned, the lower support is sleeved on the main body and is slidably connected to the main body, one end of the spring is connected to the outer wall of the upper support, the other end of the spring is connected to the outer side of the middle part of the guide rod.

[0008] The outer cleaning device comprises an upper mounting seat, a bearing A, a lower mounting seat, a lead screw, a guide column, a threaded block, an electric sliding table B, a high-pressure spray gun clamp, a high-pressure spray gun and a threaded block walking motor, the upper mounting seat and the lower mounting seat are respectively arranged at the upper and lower ends of the inner side of the frame-shaped frame, the middle parts of the upper mounting seat and the lower mounting seat are symmetrically provided with the bearing A, the two bearings A are respectively sleeved on the two ends of the lead screw, the lead screw is symmetrically provided with the guide column on the two sides, the middle part of the threaded block is provided with a threaded hole, the internal thread of the threaded hole is matched with the external thread of the lead screw, the threaded block is further provided with a through hole matched with the guide columns on the two sides, the threaded block is provided with the electric sliding table B, the electric sliding table B is provided with the high-pressure spray gun clamp, the high-pressure spray gun clamp clamps the high-pressure spray gun, the high-pressure spray gun is connected to the high-pressure cleaner through the high-pressure pipeline and is used to clean the outer part of the hollow shaft to be cleaned; the threaded block walking motor is arranged at the lower part of the bottom frame, the output end of the threaded block walking motor is matched with the lead screw, the lead screw is driven to rotate so as to drive the threaded block to displace on the lead screw.

[0009] The four guide rods are arranged in a cross shape, and the four supporting rods are matched with the four guide rods respectively, and the end of each guide rod is provided with a supporting wheel.

[0010] The utility model discloses a beneficial effect is: compatible and harmonious series locomotive hollow axle, automation degree is high, and cleaning efficiency is high, and labor intensity is greatly reduced, application high pressure water is as cleaning medium, can realize the paint removal of hollow axle in, surface, environmental protection, low cost. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the whole structure schematic diagram of the utility model.

[0012] Figure 2 It is the side view schematic diagram of the utility model.

[0013] Figure 3 It is the frame body structure schematic diagram of the utility model.

[0014] Figure 4 It is the inner wall cleaner structure schematic diagram of the utility model.

[0015] Figure 5 It is the bearing seat, transmission shaft and bearing B place's section view schematic diagram of the utility model.

[0016] Figure 6 It is the upper mounting seat, screw rod and bearing A place's schematic diagram of the utility model.

[0017] In the drawing: 1, frame body, 101, base frame, 102, frame, 2, bearing seat, 3, hollow axle clamp, 4, inner wall cleaner, 401, main body, 402, rotary spray head, 403, supporting wheel, 404, spring, 405, opening and closing switch, 406, upper support, 407, lower support, 408, guide rod, 409, supporting rod, 5, guide wheel set, 6, electric sliding table A, 7, pipe placing device, 8, upper mounting seat, 9, bearing A, 10, guide column, 11, screw rod, 12, high pressure spray gun, 13, high pressure spray gun clamp, 14, electric sliding table B, 15, threaded block, 16, lower mounting seat, 17, threaded block walking motor, 18, transmission shaft, 19, belt, 20, servo motor, 21, bearing B, 22, high pressure cleaning machine. DETAILED DESCRIPTION

[0018] The technical scheme of the utility model will be described clearly and completely in combination with the drawings of the present specification, and it should be noted that the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0019] See Figures 1-5A paint removing device for hollow axle of a series locomotive, comprising a frame 1, an inner wall cleaning device, an outer cleaning device and a high-pressure cleaning machine 22, the frame 1 clamps and fixes the hollow axle, the inner wall cleaning device is arranged on the upper part of the frame 1 to clean the inner wall of the hollow axle, the outer cleaning device is arranged on one side of the frame 1 to clean and remove paint from the outer part of the hollow axle, and the inner wall cleaning device and the outer cleaning device are connected with the high-pressure cleaning machine 22 through high-pressure pipelines. The frame 1 is composed of a base frame 101 and a frame-shaped frame 102, the frame-shaped frame 102 is vertically arranged on one side of the surface of the base frame 101, the base frame 101 is provided with a bearing seat 2, the bearing seat 2 is provided with a transmission shaft 18, the upper surface of the transmission shaft 18 is provided with a positioning column corresponding to the through hole on the end plate of the hollow axle, the transmission shaft 18 is connected with the bearing seat 2 through a bearing B21, the lower part of the base frame 101 is provided with a servo motor 20, the servo motor 20 is connected with the bottom of the transmission shaft 18 through a belt 19, the upper part of the frame-shaped frame 102 is provided with the inner wall cleaning device, and the inner side of the frame-shaped frame 102 is provided with the outer cleaning device. The inner wall cleaning device comprises a pipe placing device 7, a guide wheel set 5, an electric sliding table A6 and an inner wall cleaner 4, one end of the high-pressure pipeline connected with the inner wall cleaner 4 is connected with the other end of the high-pressure pipeline, the other end of the high-pressure pipeline is wound on the pipe placing device 7 through the guide wheel set 5, the pipe placing device 7 comprises a roller and a motor, one side of the roller is provided with a water inlet and is connected with the high-pressure cleaning machine 22 through the high-pressure pipeline, the motor drives the roller to rotate so as to drive the inner wall cleaner 4 connected with the high-pressure pipeline to ascend and descend, the electric sliding table A6 is installed on the upper surface of the frame-shaped frame 102, and one end of the upper part of the electric sliding table A6 is provided with the guide wheel set 5.The inner wall cleaner 4 comprises a main body 401, a rotating spray head 402, a guide frame, a supporting wheel 403, a spring 404 and a tension and release switch 405, the main body 401 is a tubular structure, a water inlet at the top of the main body 401 is connected with the high-pressure cleaning machine 22 through a high-pressure pipeline, a water outlet at the middle of the main body 401 is connected with the rotating spray head 402, the high-pressure water sprayed by the rotating spray head 402 is used for cleaning the inner wall of the hollow shaft, the outer wall of the lower part of the main body 401 is respectively provided with the tension and release switch 405 and the guide frame, the guide frame comprises an upper support 406, a lower support 407, a guide rod 408 and a supporting rod 409, the upper support 406 is fixedly arranged on the outer wall of the main body 401, the bottom of the upper support 406 is hingedly connected with the top of the guide rod 408, the middle inner side of the guide rod 408 is hingedly connected with the upper end of the supporting rod 409, the lower end of the supporting rod 409 is hingedly connected with the lower support 407, the lower end of the guide rod 408 is provided with the supporting wheel 403, the supporting wheel 403 is matched with the inner wall of the hollow shaft to be cleaned, the lower support 407 is sleeved on the main body 401 and is slidably connected with the main body 401, one end of the spring 404 is connected with the outer wall of the upper support 401, the other end of the spring 404 is connected with the outer side of the middle part of the guide rod 408. The outer cleaning device comprises an upper mounting seat 8, a bearing A 9, a lower mounting seat 16, a lead screw 11, a guide column 10, a threaded block 15, an electric sliding table B 14, a high-pressure spray gun clamp 13, a high-pressure spray gun 12 and a threaded block walking motor 17, the upper mounting seat 8 and the lower mounting seat 16 are respectively arranged at the upper and lower ends of the inner side of the frame-shaped frame 102, the middle parts of the upper mounting seat 8 and the lower mounting seat 16 are symmetrically provided with the bearing A 9, the two bearings A 9 are sleeved with the two ends of the lead screw 11, the two sides of the lead screw 11 are symmetrically provided with the guide column 10, the middle part of the threaded block 15 is provided with a threaded hole, the internal thread of the threaded hole is matched with the external thread of the lead screw 11, the threaded block 15 is further provided with a through hole matched with the two side guide columns 10, the threaded block 15 is provided with the electric sliding table B 14, the electric sliding table B 14 is provided with the high-pressure spray gun clamp 13, the high-pressure spray gun clamp 13 clamps the high-pressure spray gun 12, the high-pressure spray gun 12 is connected with the high-pressure cleaning machine 22 through a high-pressure pipeline and is used for paint removal cleaning of the outer part of the hollow shaft to be cleaned, and the threaded block walking motor 17 is arranged at the lower part of the bottom frame 101, the output end of the threaded block walking motor 17 is matched with the lead screw 11, the lead screw 11 is driven to rotate, so that the threaded block 15 is displaced on the lead screw 11. The number of the guide rods 408 is four, and the guide rods 408 are distributed in the shape of a cross, the number of the supporting rods 409 is also four, and the supporting rods 409 are matched with the four guide rods 408 respectively, and the end part of each guide rod 408 is provided with the supporting wheel 403.

[0020] In the using process of the utility model,

[0021] When loading: first use the crown block to hoist the hollow shaft to the transmission shaft 18, ensure that the large end of the hollow shaft is at the bottom and the small end is at the top; make the positioning column on the transmission shaft 18 pass through the hole on the end plate of the hollow shaft to realize positioning; then use the hollow shaft clamp 3 to clamp the end plate of the hollow shaft end on the transmission shaft 18 to fix it;

[0022] Inner wall paint removal and cleaning: start the electric sliding table A6 and the pipe releasing device 7, and make the inner wall cleaner 4 travel to the top of the hollow shaft under the cooperation of the high-pressure pipeline and the guide wheel set 5. At this time, the electric sliding table A6 stops, and the pipe releasing device 7 continues to run, so that the inner wall cleaner 4 passes out from the inside of the hollow shaft and the bottom of the transmission shaft 18. Next, open the opening and closing switch 405, and the guide frame is opened under the action of the spring 404, so that the supporting wheel 403 is pressed on the inner wall of the hollow shaft. At this time, the high-pressure cleaner 22 connects the drum water inlet of the pipe releasing device 7 through the high-pressure pipeline, so that the high-pressure pipeline wound thereon is connected to the water inlet above the main body 401 through the guide wheel set 5, and the rotating nozzle 402 arranged in the middle of the main body 401 sprays water in rotation. At the same time, the motor of the pipe releasing device 7 drives the drum to start to release the pipe, and the inner wall cleaner 4 gradually rises, which performs paint removal and cleaning on the inner wall of the hollow shaft from bottom to top. Because the large end of the hollow shaft is at the bottom and the small end is at the top, the guide frame of the inner wall cleaner 4 gradually closes, and when it reaches the uppermost end, the opening and closing switch 405 locks the lower support 407 of the guide frame. At this time, the electric sliding table A6 retracts, and the paint removal and cleaning of the inner wall of the hollow shaft is completed.

[0023] Outer cylindrical surface paint removal: first, configure the straight jet nozzle of the high-pressure spray gun 12, and start the electric sliding table B14 and the threaded block walking motor 17 in turn to adjust the position of the nozzle of the high-pressure spray gun 12, so that it is at the initial position of the outer cylindrical surface paint removal, that is, the bottommost position. Start the servo motor 20 to drive the transmission shaft 18 to rotate through the belt 19, so that the hollow shaft rotates slowly until it runs stably. Then start the high-pressure cleaner 22 to supply high-pressure water to the high-pressure spray gun 12 through the high-pressure pipeline, and start the threaded block walking motor 17 again to make the high-pressure spray gun 12 clamped thereon run upward along the axis direction of the hollow shaft until the paint removal of the outer cylindrical surface of the hollow shaft is completed. The threaded block walking motor 17 and the servo motor 20 stop running, and the outer paint removal and cleaning process is completed.

[0024] End face paint removal: high pressure spray gun 12 replace 360 rotation spray head, start electric sliding table B14 and threaded block walking motor 17, both cooperate and place high pressure spray gun 12 in the small end of hollow shaft web end face, open high pressure cleaning machine 22, and carry out paint removal cleaning to the end face of small end of hollow shaft, servo motor 20 drive transmission shaft 18 and the hollow shaft fixed on the top rotate, after the cleaning of small end of hollow shaft, start electric sliding table B14 and retract high pressure spray gun 12, servo motor 20 stop working, release the clamping of hollow shaft clamp 3, use the overhead crane to overturn 180 ° of hollow shaft, make the through hole of the small end web of the hollow shaft that has finished paint removal and the positioning column on transmission shaft 18 cooperate and position, then use hollow shaft clamp 3 and clamp it, then start electric sliding table B14 again and extend high pressure spray gun 12, and carry out paint removal cleaning process to the end face of big end of hollow shaft;

[0025] Discharging: servo motor 20 stop running, loosen hollow shaft clamp 3, use the overhead crane to hoist down the hollow shaft, complete discharging operation.

[0026] The above only describes the preferred embodiment of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

[0027] The part not described in the present application is prior art.

Claims

1. A paint removal apparatus for use with a series production locomotive hollow axle, comprising: The utility model relates to a kind of high-pressure cleaning machine, including frame (1), inner wall cleaning device, external cleaning device and high-pressure cleaning machine (22), characterized by: the frame (1) is fixed by hollow shaft clamping, the inner wall cleaning device is set in the upper portion of frame (1) and is cleaned to the inner hole of hollow shaft, the external cleaning device is set in the side of frame (1) and is cleaned to the outside of hollow shaft, and the inner wall cleaning device and the external cleaning device are connected with high-pressure cleaning machine (22) by high-pressure pipeline.

2. A paint removal device for use with a series of locomotives having a hollow axle, as set forth in claim 1, wherein: The frame (1) is integrated by bottom frame (101) and frame (102), the frame (102) is vertically arranged on the surface of bottom frame (101), the bearing seat (2) is arranged on the bottom frame (101), the transmission shaft (18) is arranged in the bearing seat (2), the positioning column corresponding to the through hole on the end plate of hollow shaft is arranged on the upper surface of transmission shaft (18), the hollow shaft clamp (3) for fixing hollow shaft is arranged on the circumference of the upper surface of transmission shaft (18), the bearing seat (2) is connected with transmission shaft (18) by bearing B (21), the servo motor (20) is arranged on the lower part of bottom frame (101), the servo motor (20) is connected with the bottom of transmission shaft (18) by belt (19), the inner wall cleaning device is arranged on the upper part of frame (102), and the external cleaning device is arranged on the inner side of frame (102).

3. A paint removal device for use with a series of locomotives having a hollow axle, as set forth in claim 2, wherein: The inner wall cleaning device includes pipe placing device (7), guide wheel set (5), electric sliding table A (6) and inner wall cleaner (4), one end of the high-pressure pipeline is connected with the upper end of inner wall cleaner (4), the other end of the high-pressure pipeline is wound on pipe placing device (7) after passing through guide wheel set (5), the pipe placing device includes roller and motor, the roller is provided with water inlet on one side and connected with high-pressure cleaning machine (22) by high-pressure pipeline, the motor drives the roller to rotate so as to drive the inner wall cleaner (4) connected with high-pressure pipeline to lift, the electric sliding table A (6) is installed on the upper surface of frame (102), and one end of the upper part of electric sliding table A (6) is provided with guide wheel set (5).

4. A paint removal device for use with a series of locomotives having a hollow axle, as set forth in claim 3, wherein: The inner wall cleaner (4) comprises a main body (401), a rotating nozzle (402), a guide frame, a supporting wheel (403), a spring (404) and a tension and release switch (405), the main body (401) is in a tubular structure, a water inlet at the top of the main body is communicated with a high-pressure cleaning machine (22) through a high-pressure pipeline, a water outlet at the middle of the main body (401) is communicated with the rotating nozzle (402), the high-pressure water sprayed by the rotating nozzle is used for cleaning the inside of the hollow shaft, the outer wall of the lower part of the main body (401) is respectively provided with the tension and release switch (405) and the guide frame, the guide frame comprises an upper support (406), a lower support (407), a guide rod (408) and a supporting rod (409), the upper support (406) is fixedly arranged on the outer wall of the main body (401), the bottom of the upper support (406) is hingedly connected with the top of the guide rod (408), the middle inner side of the guide rod (408) is hingedly connected with the upper end of the supporting rod (409), the lower end of the supporting rod (409) is hingedly connected with the lower support (407), the lower end of the guide rod (408) is provided with the supporting wheel (403), the supporting wheel (403) is matched with the inner wall of the hollow shaft to be cleaned, the lower support (407) is sleeved on the main body (401) and is in sliding connection with the main body (401), one end of the spring (404) is connected with the outer wall of the upper support (406), the other end of the spring (404) is connected with the outer side of the middle of the guide rod (408).

5. A paint removal device for use with a series of locomotives having a hollow axle, as set forth in claim 2, wherein: The outer cleaning device comprises an upper mounting seat (8), a bearing A (9), a lower mounting seat (16), a lead screw (11), a guide column (10), a threaded block (15), an electric sliding table B (14), a high-pressure spray gun clamp (13), a high-pressure spray gun (12) and a threaded block walking motor (17), the upper mounting seat (8) and the lower mounting seat (16) are respectively arranged at the upper and lower ends of the inner side of the frame-shaped frame (102), the middle of the upper mounting seat (8) and the lower mounting seat (16) is symmetrically provided with the bearing A (9), the two bearings A (9) are sleeved with the two ends of the lead screw (11), the lead screw (11) is symmetrically provided with the guide column (10) on the two sides, the threaded block (15) is provided with a threaded hole in the middle, the internal thread of the threaded hole is matched with the external thread of the lead screw (11), the threaded block (15) is further provided with a through hole matched with the guide columns (10) on the two sides, the threaded block (15) is provided with the electric sliding table B (14), the electric sliding table B (14) is provided with the high-pressure spray gun clamp (13), the high-pressure spray gun clamp (13) clamps the high-pressure spray gun (12), the high-pressure spray gun (12) is connected with the high-pressure cleaning machine (22) through a high-pressure pipeline, and is used for cleaning the outer part of the hollow shaft to be cleaned; the threaded block walking motor (17) is arranged at the lower part of the bottom frame (101), the output end of the threaded block walking motor (17) is matched with the lead screw (11), the lead screw (11) is driven to rotate, so that the threaded block (15) is displaced on the lead screw (11).

6. A paint removal device for use with a series of locomotives having a hollow axle, as set forth in claim 4, wherein: The four guide rods (408) are arranged in a cross shape, and the four supporting rods (409) are arranged in cooperation with the four guide rods (408) respectively. The end of each guide rod (408) is provided with a supporting wheel (403).