A wear-resistant coating device for high-speed rail accessories

Abstract

The present invention relates to the field of mechanical accessories, and discloses a wear-resistant coating device for high-speed railway accessories. The wear-resistant coating device for high-speed railway accessories comprises a workbench, a spray protective cylinder and a spray gun, wherein a back plate is arranged on the rear side of the upper surface of the workbench, a control cross bar is rotatably installed on the front surface of the back plate, two groups of support platforms are symmetrically arranged on the front surface of the back plate, the support platforms in the same group are distributed up and down, two fixed rods are vertically arranged between the two support platforms in the same group, the spray protective cylinder is suspended above the workbench, the interior of the spray protective cylinder is hollow and the bottom is open, a connecting plate is arranged on the rear side of the top of the spray protective cylinder, a sliding block is arranged backward on the top of the connecting plate, and the sliding block slides vertically on the surfaces of the two fixed rods in the same group, and the spray gun is installed on a protective cylinder that can be moved up and down, and the accessories are wrapped by controlling the protective cylinder, so that the spraying work is carried out in a sealed area to prevent the atomized paint from scattering and affecting the working environment.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical parts processing, in particular to wear-resistant coating equipment for high-speed rail parts. Background Art

[0002] High-speed rail, or high-speed railway, is a modern and rapid railway transportation method. Compared with traditional trains, high-speed rail has the characteristics of high speed, high safety and good comfort. Therefore, the production of high-speed rail also represents the industrial level of a country. Because the speed of high-speed rail is relatively fast, the accessories will be subject to huge friction during operation. In order to ensure the quality of the accessories, most of the accessories involved in the movement will have corresponding wear-resistant coatings sprayed on their surfaces. For example, wheels, axles, brake discs, axle boxes and other accessories need to be surface sprayed during production.

[0003] In the existing process, the spraying of mechanical accessories is mostly done by atomizing the paint through a spray gun so that it adheres to the surface of the accessory to form a corresponding uniform wear-resistant layer. At present, there are still the following shortcomings in the spraying process: since the sizes and shapes of various accessories are different, it is difficult to achieve automation in the spraying process. At the same time, the atomized paint will be released into the air during spraying, causing pollution to the working environment and affecting the health of the staff. Secondly, in order to ensure the stability of the accessories during work, corresponding fixtures are required, and the contact area between the fixture and the accessories cannot be sprayed, which in turn affects the overall effect of the spraying. The accessories after spraying need to be cooled and dried, and waiting for drying affects work efficiency. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a wear-resistant coating device for high-speed rail accessories, which solves the problem of scattering of atomized paint and ensures the safety of the working environment.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a wear-resistant coating equipment for high-speed rail accessories, including a workbench, a spray protective cylinder and a spray gun, a back plate is arranged on the rear side of the upper surface of the workbench, a control cross bar is rotatably installed on the front surface of the back plate, two groups of support platforms are symmetrically arranged on the front surface of the back plate, the support platforms in the same group are distributed up and down, and two fixed rods are vertically arranged between the two support platforms in the same group, the spray protective cylinder is suspended above the workbench, the inside of the spray protective cylinder is hollow and the bottom is open, a connecting plate is arranged on the rear side of the top of the spray protective cylinder, a slider is arranged backward on the top of the connecting plate, and the slider slides vertically on the surfaces of the two fixed rods in the same group, top gun holes are symmetrically opened on one side of the upper surface of the spray protective cylinder, side gun holes are symmetrically opened on the outer surface of the spray protective cylinder, and a rotating sealing plate is installed on one side of the top gun hole and the side gun hole, and an accessory rotating mechanism is symmetrically arranged on the surface of the workbench, and the accessory rotating mechanism includes a rotating disk rotatably installed on the upper surface of the workbench, and the rotating disk is placed directly below the spray protective cylinder.

[0006] Furthermore, a suspended support frame is provided inside the rotating disk, a steel mesh is laid on the inner side of the suspended support frame, a central magnetic block is inlaid in the center of the suspended support frame, and four transverse magnetic strips are evenly inlaid on the surface of the suspended support frame with the central magnetic block as the center.

[0007] Furthermore, linear cylinders are symmetrically arranged inside the workbench, a rack is horizontally installed at the output end of the linear cylinder, a rotating shaft is arranged at the bottom center of the rotating disk, a gear is arranged at the bottom of the rotating shaft, and the rack is meshed with the rack.

[0008] Furthermore, a connecting spring tube is connected to the bottom of the spray gun, and one end of the connecting spring tube facing away from the spray gun is connected to the paint cylinder.

[0009] Furthermore, the end of the spray gun is inserted into the side gun hole.

[0010] Furthermore, the end of the spray gun is inserted into the top gun hole.

[0011] Furthermore, the front surface of the back plate is symmetrically provided with arc-shaped grooves, the arc-shaped grooves are concentric with the rotation axis of the control crossbar, and three positioning holes are evenly provided inside the arc-shaped grooves.

[0012] Furthermore, U-shaped fork rods are symmetrically arranged at both ends of the control cross rod, the ends of the U-shaped fork rods are open, and a fixing bolt is arranged at the back center of the slider, and the fixing bolt is placed inside the U-shaped fork rod.

[0013] Furthermore, bosses are symmetrically arranged on the inner side of the control cross bar, and the bosses slide inside the arc-shaped groove. A mounting hole is opened on the rear surface of the boss, and a positioning bolt slides through the mounting hole, and the end of the positioning bolt is adapted to the inner size of the positioning hole.

[0014] Furthermore, a connecting rod is provided at the front end of the positioning bolt, and the connecting rod passes through the front surface of the control cross bar. The front ends of the two connecting rods are laterally connected with control pull rods, and the control pull rods are placed on the outside of the control cross bar. A return spring is sleeved on the surface of the connecting rod, and the return spring is placed inside the mounting hole. One end of the return spring contacts the end surface of the positioning bolt.

[0015] The present invention provides a wear-resistant coating device for high-speed rail accessories. It has the following beneficial effects:

[0016] 1. The present invention installs the spray gun on a protective tube that can move up and down, and controls the protective tube to wrap the accessories, so that the spraying work is carried out in a sealed area to prevent the atomized paint from scattering and affecting the working environment.

[0017] 2. The present invention fixes the accessories by magnetic adsorption, so that the surfaces of the accessories are all in the exposed area, ensuring full coverage of the paint. In addition, the accessories can be driven to rotate during the spraying process by rotation to perform multi-directional spraying work.

[0018] 3. The present invention can adjust the installation positions of the spray gun and the protective tube according to different spraying environments to achieve multi-angle spraying of accessories and adapt to the surfaces of different accessories in operation.

[0019] 4. The present invention is provided with two spray protection cylinders that can be linked and two separately controlled accessory rotation mechanisms. When one side is spraying, the other side moves the protection cylinder upward to facilitate the drying of the accessories. At the same time, loading and unloading can be carried out to improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the installation three-dimensional structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the spray protection tube of the present invention;

[0022] Figure 3 For the present invention Figure 1 A schematic diagram of the enlarged structure of area A;

[0023] Figure 4 It is a schematic diagram of the accessory rotation structure of the present invention;

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the control cross bar of the present invention;

[0025] Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure of area B.

[0026] 1. Workbench; 2. Back plate; 201. Arc groove; 202. Positioning hole; 203. Support platform; 204. Fixing rod; 3. Control cross bar; 301. U-shaped fork rod; 302. Boss; 303. Mounting hole; 304. Positioning bolt; 305. Return spring; 306. Connecting rod; 307. Control pull rod; 4. Spray protection tube; 401. Slider; 402. Fixing bolt; 403. Connecting plate; 404. Top gun hole; 405. Side gun hole; 406. Rotating sealing plate; 5. Spray gun; 501. Connecting spring tube; 6. Accessory rotating mechanism; 601. Rotating disk; 602. Suspended support frame; 603. Steel mesh; 604. Central magnetic block; 605. Horizontal magnetic strip; 606. Linear cylinder; 607. Rack; 608. Rotating shaft; 609. Gear. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Embodiment 1:

[0029] Please refer to Figure 1 , Figure 2 and Figure 4 As shown, a wear-resistant coating equipment for high-speed railway accessories includes a workbench 1, a spray protection cylinder 4 and a spray gun 5. A back plate 2 is arranged on the rear side of the upper surface of the workbench 1, and a control cross bar 3 is rotatably installed on the front surface of the back plate 2. Two groups of support platforms 203 are symmetrically arranged on the front surface of the back plate 2. The support platforms 203 in the same group are distributed up and down, and the support platforms 203 are fixed to the back plate 2 by bolts. Two fixing rods 204 are vertically arranged between the two support platforms 203 in the same group. The fixing rods 204 are round rods with smooth surfaces. The spray protection cylinder 4 is suspended above the workbench 1. The inside of the spray protection cylinder 4 is hollow and the bottom is open. A connecting plate 403 is arranged on the rear side of the top of the spray protection cylinder 4. A slider 401 is arranged backward on the top of the connecting plate 403. The slider 401 slides vertically on the surfaces of the two fixing rods 204 in the same group. The slider 401 can only slide along The surface of the fixed rod 204 slides up and down to drive the spray protection cylinder 4 to move up and down. A top gun hole 404 is symmetrically opened on one side of the upper surface of the spray protection cylinder 4, and a side gun hole 405 is symmetrically opened on the outer surface of the spray protection cylinder 4 to adapt to the spraying work on the upper surface and side surface of the accessory respectively. A rotating sealing plate 406 is installed on the outer side of the top gun hole 404 and the side gun hole 405. The top gun hole 404 and the side gun hole 405 can be sealed by rotating the rotating sealing plate 406, so that the inside of the spray protection cylinder 4 can be in a sealed state when not in use. The surface of the workbench 1 is symmetrically provided with an accessory rotating mechanism 6, and the accessory rotating mechanism 6 includes a rotating disk 601 rotatably installed on the upper surface of the workbench 1. The rotating disk 601 is placed directly below the spray protection cylinder 4 to drive the accessory to rotate to realize the spraying work.

[0030] Among them, a suspended support frame 602 is arranged inside the rotating disk 601, and the suspended support frame 602 is in a cross structure. A steel mesh 603 is laid on the inner side of the suspended support frame 602. The interior of the rotating disk 601 is hollow, and the suspended support frame 602 will be contacted when the spray protection tube 4 moves down for sealing, but the contact force should not be too large, otherwise it will cause friction. A central magnetic block 604 is inlaid in the center of the suspended support frame 602, and four transverse magnetic strips 605 are evenly inlaid on the surface of the suspended support frame 602 with the central magnetic block 604 as the center of the circle, so as to adsorb and fix the accessories through the central magnetic block 604 and the transverse magnetic strips 605.

[0031] Please refer to Figure 4 As shown, a linear cylinder 606 is symmetrically arranged inside the workbench 1, a rack 607 is horizontally installed at the output end of the linear cylinder 606, a rotating shaft 608 is arranged at the bottom center of the rotating disk 601, a gear 609 is arranged at the bottom of the rotating shaft 608, and the rack 607 is meshed with the rack 607. The rotating disk 601 can be controlled to rotate at a certain angle through the linear cylinder 606.

[0032] Please refer to Figure 2 As shown, a connecting spring tube 501 is connected to the bottom of the spray gun 5, and the end of the connecting spring tube 501 facing away from the spray gun 5 is connected to the paint cylinder, and the paint is atomized and sprayed out through a high-pressure airflow. The end of the spray gun 5 is inserted into the side gun hole 405. At this time, the top gun hole 404 is rotationally sealed by a rotating sealing plate 406, and the spray gun 5 is placed on the side surface of the accessory at the center of the spray protection cylinder 4 to carry out spraying.

[0033] Please refer to Figure 1 and Figure 3 As shown, the front surface of the back panel 2 is symmetrically provided with an arc groove 201, which is concentric with the rotation axis of the control cross bar 3. Three positioning holes 202 are evenly provided inside the arc groove 201. The hole in the middle position of the three positioning holes 202 adapts to the horizontal state of the control cross bar 3. When the control cross bar 3 is tilted, it can be limited by the positioning holes 202 at the cross position.

[0034] Please refer to Figure 2 and Figure 5 , U-shaped fork rods 301 are symmetrically arranged at both ends of the control cross bar 3, the ends of the U-shaped fork rod 301 are open, and a fixing bolt 402 is arranged at the back center of the slider 401, and the fixing bolt 402 is placed on the inner side of the U-shaped fork rod 301. When the control cross bar 3 rotates at an angle, the slider 401 can be moved up and down through the U-shaped fork rod 301 and the fixing bolt 402, and then the spray protection tube 4 is mobilized to move up and down.

[0035] Among them, a boss 302 is symmetrically arranged on the inner side of the control cross bar 3, and the boss 302 slides inside the arc-shaped groove 201 to improve the stability of the movement of the control cross bar 3. A mounting hole 303 is opened on the rear surface of the boss 302, and a positioning bolt 304 slides through the mounting hole 303. The end of the positioning bolt 304 is adapted to the internal size of the positioning hole 202, and the angle of the control cross bar 3 is controlled by the cooperation of the two.

[0036] Please refer to Figure 5 and Figure 6As shown, a connecting rod 306 is provided at the front end of the positioning bolt 304, and the connecting rod 306 passes through the front surface of the control cross bar 3. The front ends of the two connecting rods 306 are laterally connected with a control pull rod 307, and the control pull rod 307 is placed on the outside of the control cross bar 3. A return spring 305 is sleeved on the surface of the connecting rod 306, and the return spring 305 is placed inside the mounting hole 303. One end of the return spring 305 contacts the end surface of the positioning bolt 304, so that the elastic force of the return spring 305 is utilized to make the positioning bolt 304 always have an inward force, and then it can be automatically limited after the control cross bar 3 is rotated to the specified position, and the outer connecting rod 306 can realize the simultaneous control of the two positioning bolts 304.

[0037] Embodiment 2:

[0038] The end of the spray gun 5 is inserted into the top gun hole 404 so that the spray gun 5 sprays downward to achieve spraying on the top surface of the accessory. At this time, the side gun holes 405 on the side are sealed by a rotating sealing plate 406, and one of the top gun holes 404 is placed at the center of the spray protective tube 4, and then the upper surface of the large-sized accessory can be sprayed by rotation.

[0039] Embodiment 3:

[0040] In this embodiment, suitable spraying materials are selected for different high-speed rail accessories, and the rotation speed of the accessories and the spraying speed of the top spraying and side spraying during the spraying process are adjusted to optimize the spraying effect and ensure the wear resistance of the accessories and the uniformity of the coating.

[0041] 1. Selection of spraying materials:

[0042] According to the actual application requirements of high-speed rail accessories, this embodiment selects tungsten carbide-based coatings and chromium oxide-based coatings for wear-resistant coating spraying. These two materials have good wear resistance and corrosion resistance, and are suitable for the high-speed friction environment during high-speed rail operation. The particle diameter of tungsten carbide-based coatings is 30-50 microns, and the coating thickness is controlled at 100-150 microns during spraying; the particle diameter of chromium oxide-based coatings is 20-40 microns, and the coating thickness is controlled at 80-120 microns. The selection of specific spraying materials can be adjusted according to the actual operating conditions of the accessories.

[0043] 2. Control of accessory rotation speed:

[0044] The speed at which the accessory rotates directly affects the uniformity and adhesion of the coating. In this embodiment, the rotation speed of the accessory is optimized according to the shape, size and spraying requirements of the accessory. For smaller accessories (with a diameter of less than 100 mm), the rotation speed is set to 20-30 rpm; for medium-sized accessories (between 100 mm and 300 mm in diameter), the rotation speed is set to 10-20 rpm; for large accessories (with a diameter of more than 300 mm), the rotation speed is set to 5-10 rpm. By controlling the rotation speed, the uniform distribution of the coating on the surface of the accessory is ensured, avoiding the problem of paint scattering due to too fast a rotation speed or coating accumulation due to too slow a rotation speed.

[0045] 3. Spray speed of top spray and side spray:

[0046] The spray speed of the spray gun is crucial to the adhesion of the paint. During the top spraying process, the spray gun's spray speed is set at 15-20 m / s to ensure that the paint can evenly cover the upper surface of the accessory, and the spray layer thickness is stable between 100-150 microns; during the side spraying process, since the side of the accessory requires a more uniform coating distribution, the spray gun's spray speed is slightly lower, set to 10-15 m / s, to ensure strong adhesion of the coating and less prone to uneven coating thickness. In addition, to ensure uniform distribution of paint during the spraying process, the distance between the spray gun and the accessory surface is controlled at 150-200 mm.

[0047] 4. Control of spraying temperature and air pressure:

[0048] The air pressure during the spraying process is set at 0.4-0.6 MPa to ensure that the paint can be smoothly atomized and evenly covered on the surface of the accessories. In terms of temperature, the spraying environment temperature is controlled at 20-25°C, and the temperature of the paint is maintained at 30-35°C to ensure the adhesion and wear resistance of the coating.

[0049] Through the optimization in this embodiment, the quality of the wear-resistant coating of the accessories is significantly improved, especially under high-speed operating conditions, the wear resistance and corrosion resistance of the coating are guaranteed, and the efficiency of the spraying process is also improved.

[0050] Working principle: The accessories are sucked into the accessory rotating mechanism 6 through the central magnetic block 604 and the transverse magnetic strip 605, and the end of the spray gun 5 is inserted into the spray protection tube 4. The rack 607 is driven to slide back and forth in the horizontal direction through the linear cylinder 606, and then the rotating disk 601 is driven to rotate through the mutual engagement of the rack 607 and the gear 609 to drive the accessories to rotate. At the same time, due to the presence of the return spring 305, the positioning bolt 304 always has a backward force, and then the stability of the angle of the spray protection tube 4 can be achieved by cooperating with the positioning hole 202 at the corresponding position. When the control cross bar 3 is in a horizontal state, the two spray protection The cylinder 4 is suspended above the accessory rotating mechanism 6. On the contrary, when the control cross bar 3 is tilted at an angle, the spray protection cylinder 4 at one end thereof will be placed below to wrap the accessory with the spray protection cylinder 4, and then the internal accessory is sprayed through the spray gun 5, and the loading and unloading can be realized on the other side. When adjusting, the control pull rod 307 can be pulled outward and rotated. When the control pull rod 307 is pulled outward, the positioning bolt 304 can be disengaged from the positioning hole 202. At this time, the control cross bar 3 can be rotated at a certain angle, and the boss 302 is always placed inside the arc-shaped groove 201 to limit the control cross bar 3 so that the control cross bar 3 can only rotate within a certain range.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wear-resistant coating device for high-speed rail accessories, comprising a workbench (1), a spray protection tube (4) and a spray gun (5), characterized in that: A back plate (2) is arranged at the rear side of the upper surface of the workbench (1), a control cross bar (3) is rotatably mounted on the front surface of the back plate (2), two groups of support platforms (203) are symmetrically arranged on the front surface of the back plate (2), the support platforms (203) in the same group are distributed up and down, two fixing rods (204) are vertically arranged between the two support platforms (203) in the same group, the spray protection tube (4) is suspended above the workbench (1), the interior of the spray protection tube (4) is hollow and the bottom is open, a connecting plate (403) is arranged at the rear side of the top of the spray protection tube (4), and a sliding block (401) is arranged backward on the top of the connecting plate (403) The sliding block (401) slides vertically on the surfaces of the two fixed rods (204) in the same group. A top gun hole (404) is symmetrically opened on one side of the upper surface of the spray protection tube (4). A side gun hole (405) is symmetrically opened on the outer surface of the spray protection tube (4). A rotating sealing plate (406) is installed on one side of the outer side of the top gun hole (404) and the side gun hole (405). An accessory rotating mechanism (6) is symmetrically arranged on the surface of the workbench (1). The accessory rotating mechanism (6) includes a rotating disk (601) rotatably installed on the upper surface of the workbench (1). The rotating disk (601) is placed directly below the spray protection tube (4).

2. The wear-resistant coating equipment for high-speed railway accessories according to claim 1 is characterized in that: A suspended support frame (602) is arranged inside the rotating disk (601), a steel mesh (603) is laid on the inner side of the suspended support frame (602), a central magnetic block (604) is inlaid at the center of the suspended support frame (602), and four transverse magnetic strips (605) are evenly inlaid on the surface of the suspended support frame (602) with the central magnetic block (604) as the center.

3. The wear-resistant coating equipment for high-speed railway accessories according to claim 2 is characterized in that: A linear cylinder (606) is symmetrically arranged inside the workbench (1), a rack (607) is horizontally mounted on the output end of the linear cylinder (606), a rotating shaft (608) is arranged at the bottom center of the rotating disk (601), a gear (609) is arranged at the bottom of the rotating shaft (608), and the gear (609) is meshed with the rack (607).

4. The wear-resistant coating equipment for high-speed railway accessories according to claim 1 is characterized in that: A connecting spring tube (501) is connected to the bottom of the spray gun (5), and one end of the connecting spring tube (501) facing away from the spray gun (5) is connected to the paint barrel.

5. The wear-resistant coating equipment for high-speed railway accessories according to claim 4 is characterized in that: The end of the spray gun (5) is inserted into the side gun hole (405).

6. The wear-resistant coating equipment for high-speed railway accessories according to claim 4 is characterized in that: The end of the spray gun (5) is inserted into the top gun hole (404).

7. The wear-resistant coating equipment for high-speed railway accessories according to claim 1 is characterized in that: The front surface of the back plate (2) is symmetrically provided with an arc-shaped groove (201), the arc-shaped groove (201) is concentric with the rotation axis of the control crossbar (3), and three positioning holes (202) are evenly provided inside the arc-shaped groove (201).

8. The wear-resistant coating equipment for high-speed railway accessories according to claim 7 is characterized in that: U-shaped shift fork rods (301) are symmetrically arranged at both ends of the control crossbar (3), the ends of the U-shaped shift fork rods (301) are open, and a fixing bolt (402) is arranged at the center of the back of the slider (401), and the fixing bolt (402) is placed inside the U-shaped shift fork rod (301).

9. The wear-resistant coating equipment for high-speed railway accessories according to claim 8 is characterized in that: A boss (302) is symmetrically arranged on the inner side of the control cross bar (3), and the boss (302) slides inside the arc-shaped groove (201). A mounting hole (303) is opened on the rear surface of the boss (302), and a positioning bolt (304) slides through the mounting hole (303), and the end of the positioning bolt (304) is adapted to the inner size of the positioning hole (202).

10. The wear-resistant coating equipment for high-speed railway accessories according to claim 9 is characterized in that: A connecting rod (306) is provided at the front end of the positioning bolt (304), and the connecting rod (306) passes through the front surface of the control cross bar (3). The front ends of the two connecting rods (306) are laterally connected to a control pull rod (307), and the control pull rod (307) is placed on the outside of the control cross bar (3). A return spring (305) is sleeved on the surface of the connecting rod (306), and the return spring (305) is placed inside the mounting hole (303). One end of the return spring (305) contacts the end surface of the positioning bolt (304).

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