A kind of rail transit motor vehicle oil cooling fin automatic cleaning device and method

Abstract

The present invention discloses an automatic cleaning device and method for oil-cooled radiating fins of a rail transit motor vehicle, the device comprising a telescopic nozzle assembly, a vertical moving assembly, a horizontal moving assembly, a trolley and a control assembly. The horizontal moving assembly comprises a displacement driving mechanism, and an upper moving plate, a middle moving plate and a lower fixed plate which are slidably connected in sequence. The displacement driving mechanism comprises a ball screw module, a gear rack displacement multiplication module and a chain sprocket driving module. The three cooperate to realize the horizontal displacement of the vertical moving assembly, thereby greatly increasing the horizontal cleaning range. The vertical moving assembly can drive the telescopic nozzle assembly to displace in the vertical direction. The telescopic nozzle assembly adjusts the distance between the swing nozzle unit and the radiating fins through the telescopic function to ensure that the spraying distance is consistent. The control assembly controls and adjusts the cleaning distance and range, so that the swing nozzle unit can perform multi-angle flushing on the oil-cooled radiator fins, improve the cleaning efficiency, and avoid damage to the fins by high-pressure water impact.

Description

Technical Field

[0001] The embodiments of the present invention belong to the technical field of automatic cleaning devices, and more specifically, to an automatic cleaning device and method for oil-cooled heat sink fins of a rail transit motor vehicle. Background Art

[0002] After a certain period of operation, the surface and groove of the oil-cooled radiator fins of rail transit vehicles will be covered with dust and grass leaves, which directly affects ventilation and reduces cooling efficiency. This requires that during operation and maintenance, the oil-cooled radiator cover must be removed and the surface of the radiator fins must be thoroughly cleaned. Currently, the main cleaning method is manual cleaning, that is, the operator uses a handheld spray gun to spray the radiator fins in an unordered manner.

[0003] The existing technology has the following disadvantages: (1) The cleaning quality of manual spray gun flushing depends on the operator's sense of responsibility, and the consistency of cleaning is not guaranteed; (2) The labor intensity is high and the cleaning efficiency is low; (3) Manual spray cleaning cannot completely avoid damage to the fins caused by high-pressure water impact because it cannot ensure the consistent distance between the nozzle and the fin. Summary of the invention

[0004] In view of the above defects or improvement needs of the prior art, the present invention provides an automatic cleaning device for oil-cooling fins of a rail transit motor vehicle to solve such problems.

[0005] In order to achieve the above-mentioned purpose, the present invention provides an automatic cleaning device for oil-cooled radiating fins of a rail transit motor vehicle, comprising a trolley, a car body and a traveling assembly; a horizontal moving assembly arranged on the top of the car body, comprising a displacement driving mechanism, and an upper moving plate, a middle moving plate, and a lower fixed plate which are slidably connected in sequence, wherein the lower fixed plate is fixedly arranged on the top of the trolley; a vertical moving assembly slidably arranged on the top of the upper moving plate, comprising a vertical support bracket, a first ball screw and a second drive motor; a telescopic nozzle assembly arranged on the side of the vertical moving assembly, comprising a scissor-type telescopic arm, and a scissor-type telescopic nozzle arranged at the front end of the scissor-type telescopic arm. The row of sprinklers is provided with a telescopic drive mechanism on the telescopic arm of the scissor fork; and a control component provided on the vehicle body; the displacement drive mechanism includes a ball screw module provided on the lower fixed plate, a gear rack displacement multiplication module provided on the middle moving plate, and a chain sprocket drive module provided on the upper moving plate; the chain sprocket drive module includes sprockets provided at both ends of the upper moving plate for rotating respectively, two groups of chains respectively meshing with the two groups of sprockets, and chain end fixing frames respectively provided at the bottom of the vertical support bracket and on the middle moving plate, and the two groups of chains are respectively fixedly connected to the chain end fixing frames to form a closed loop;

[0006] The control component controls the horizontal moving component to drive the vertical moving component to move linearly in the horizontal direction, controls the vertical moving component to drive the telescopic driving mechanism to move linearly in the vertical direction, and now the vertical and horizontal reciprocating movement of the swing nozzle unit forms a rectangular closed cleaning range to complete the automatic cleaning of the cleaning surface.

[0007] Furthermore, the ball screw module includes a second ball screw arranged on the top of the fixed plate and rotated by a rotating frame, a servo motor arranged parallel to the second ball screw, and synchronous wheels are respectively provided on one end of the second ball screw and the motor shaft of the servo motor, and the two sets of synchronous wheels are connected and transmitted by a synchronous belt; the second ball screw is also provided with a second screw slider, which is fixedly connected to the middle moving plate.

[0008] Furthermore, the gear rack displacement multiplication module includes a linkage gear rotatably arranged on the middle moving plate, and racks respectively fixed on the bottom of the upper moving plate and the lower fixed plate, and the top and bottom of the linkage gear are respectively meshed with two sets of racks.

[0009] Furthermore, the swing sprinkler unit comprises a row sprinkler, a first fixed frame, a rotating joint, a seat bearing, a first driving motor, a crank wheel and a swing rod; the first fixed frame is fixedly connected to the front end of the scissors telescopic arm; the rotating joint and the seat bearing are respectively fixedly connected to the first fixed frame; the upper and lower ends of the row sprinkler are respectively rotatably connected to the rotating joint and the seat bearing; the first driving motor is fixedly arranged in the first fixed frame, and its motor shaft is fixedly connected to the crank wheel; the rocker sliding limit provided on the crank wheel is located in the limit groove provided on the swing rod; one end of the swing rod is fixedly connected to the row sprinkler.

[0010] Furthermore, the bottom of the vertical support bracket is slidably arranged on the top of the horizontal moving component through a slider guide rail, and both ends of the first ball screw are rotatably arranged on the vertical support bracket, and its top end is fixedly connected to the motor shaft of the second drive motor arranged on the top of the vertical support bracket, and a first screw slider is provided on the screw body; the first screw slider is fixedly connected to the second fixed frame.

[0011] Furthermore, the vehicle body includes a profile frame and a sheet metal door, which is equipped with a battery pack, a liquid storage tank and a cleaning pump group. The battery provides power to other functional components, and the cleaning pump group pumps the cleaning liquid in the liquid storage tank into the row of nozzles to flush the oil-cooled radiator fins.

[0012] Furthermore, the control component includes a control panel and a control module arranged on the vehicle body. By inputting instructions through the control panel, the control module can control relevant functional components to realize the flushing function.

[0013] Furthermore, it also includes a manual spray gun arranged on the top of the vehicle body, and a manual valve arranged on the side of the vehicle body.

[0014] According to another aspect of the present invention, there is also provided a method for automatically cleaning oil cooling fins of a rail transit motor vehicle, comprising the following steps:

[0015] S100: Move the trolley and brake it to face the surface to be cleaned, so that the swing nozzle unit is 200 to 300 mm away from the surface to be cleaned;

[0016] S200: Start the cleaning pump group, and the swing nozzle unit sprays a vertical fan-shaped water jet;

[0017] S300: driven by the first driving motor, the crank wheel and the swing rod drive the row of nozzles to rotate, so that the swing nozzle unit swings horizontally and repeatedly, forming a high-pressure water jet to wash the fins at multiple angles, achieving a "cleaning" effect on the cleaning surface;

[0018] S400: Through the program setting of the control component, the vertical and horizontal reciprocating movements of the swing nozzle unit are realized under the action of the vertical moving component and the horizontal moving component, forming a rectangular closed cleaning range, and completing the automatic cleaning work of the cleaning surface;

[0019] S500: Switch the "automatic cleaning" mode to "manual cleaning" through the manual valve, and use a handheld manual spray gun to re-clean stubborn dirt and dead corners.

[0020] In general, the above technical solutions conceived by the present invention can achieve the following beneficial effects compared with the prior art:

[0021] (1) The automatic cleaning device for oil-cooled heat sink fins of a rail transit vehicle of the present invention is provided with a telescopic nozzle assembly to adjust and maintain the distance between the row of nozzles and the heat sink fins, thereby ensuring the consistency of the spraying distance, improving the cleaning efficiency, and avoiding damage to the fins caused by high-pressure water impact.

[0022] (2) The present invention is an automatic cleaning device for oil-cooled heat sink fins of a rail transit vehicle. A vertical moving component is provided to adjust the height of the row of nozzles so that the row of nozzles are aligned with the fins; a horizontal moving component is used to horizontally displace the row of nozzles; and a rectangular closed cleaning range is formed by the cooperation of the vertical moving component and the horizontal moving component, thereby completing the automatic cleaning of the cleaning surface and improving the cleaning efficiency.

[0023] (3) The automatic cleaning device for oil-cooled heat sink fins of a rail transit vehicle of the present invention, wherein the horizontal moving component is provided with a displacement driving mechanism. Under the drive of a servo motor, a ball screw module, a gear rack displacement multiplication module, and a chain sprocket driving module are adopted to realize power transmission to the center moving plate, the upper moving plate, and the vertical supporting bracket respectively, so that the three are synchronously linked and linearly displaced, thereby increasing the horizontal working range of the telescopic nozzle assembly, avoiding the staff from moving the trolley back and forth, and reducing the labor intensity of the staff.

[0024] (4) In the automatic cleaning device for oil-cooled heat sink fins of a rail transit vehicle of the present invention, the row of nozzles has a horizontal swing function, thereby achieving a "spraying" effect of simulating a person holding a spray gun on the surface to be cleaned, effectively improving the cleaning efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of an automatic cleaning device for oil-cooled heat sink fins of a rail transit motor vehicle according to an embodiment of the present invention;

[0026] Figure 2 is a cross-sectional view of a swing nozzle unit in an embodiment of the present invention;

[0027] Figure 3 A top view of the swing nozzle unit in an embodiment of the present invention;

[0028] Figure 4 This is an enlarged schematic diagram of the structure of part A in an embodiment of the present invention;

[0029] Figure 5 is a cross-sectional view of a horizontal moving assembly in an embodiment of the present invention;

[0030] Figure 6 It is a side view of the horizontal moving assembly in the embodiment of the present invention.

[0031] In all the drawings, the same reference numerals represent the same technical features, specifically:

[0032] 1- telescopic nozzle assembly, including: 110- swing nozzle unit, 111- row nozzle, 112- first fixed frame, 113- rotary joint, 114- seat bearing, 115- first drive motor, 116- crank wheel, 117- swing rod, 120- scissor telescopic arm, 130- telescopic drive mechanism;

[0033] 2-vertical moving assembly, including: 210-vertical support bracket, 220-first ball screw, 230-second drive motor;

[0034] 3- horizontal moving assembly, including: 310- upper moving plate, 320- middle moving plate, 330- lower fixed plate, 340- displacement driving mechanism, 341- servo motor, 342- second ball screw, 343- linkage gear, 344- rack, 345- chain, 346- sprocket, 347- chain end fixing frame;

[0035] 4-trolley, including: 410-trolley body, 420-travel assembly;

[0036] 5- Control components;

[0037] 6-Manual spray gun;

[0038] 7-Manual valve;

[0039] 8-Wire harness straps. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0041] like Figure 1-4 As shown, the present invention discloses an automatic cleaning device for oil-cooled heat sink fins of rail transit motor vehicles, including a telescopic nozzle assembly 1, a vertical moving assembly 2, a horizontal moving assembly 3, a trolley 4 and a control assembly 5. The horizontal moving assembly 3 includes a displacement drive mechanism 340, and an upper moving plate 310, a middle moving plate 320, and a lower fixed plate 330 that are slidably connected in sequence. The lower fixed plate 330 is fixedly arranged on the top of the trolley 4, and the top of the upper moving plate 310 is slidably provided with a vertical moving assembly 2; the displacement drive mechanism 340 includes a ball screw module, a gear rack displacement multiplication module, and a chain sprocket drive module, and the three cooperate to realize the horizontal displacement of the vertical moving assembly 2 to increase the horizontal cleaning range. The vertical moving assembly 2 can drive the telescopic nozzle assembly 1 to move in the vertical direction. The telescopic nozzle assembly 1 adjusts the distance between the swinging nozzle unit 110 and the heat sink fins through the telescopic function to ensure that the spraying distance is consistent. The control component 5 is arranged on the trolley 4, controls the telescopic nozzle component 1, the vertical moving component 2 and the horizontal moving component 3 to adjust the cleaning distance and range, controls the output pressure value of the cleaning pump group, and enables the swing nozzle unit 110 to flush the oil-cooled radiator fins, thereby ensuring the consistency of the spraying distance, improving the cleaning efficiency, and avoiding the damage to the fins caused by high-pressure water impact.

[0042] like Figure 1As shown, the trolley 4 includes a body 410 and a travel assembly 420. The body 410 includes a profile frame and a sheet metal door, which is provided with a battery pack, a liquid storage tank and a cleaning pump group. The battery provides power for other functional components, and the cleaning pump group pumps the cleaning liquid in the liquid storage tank into the swing nozzle unit 110, thereby flushing the oil-cooled radiator fins. Preferably, the body 410 is also provided with an external electrical interface and a cleaning liquid input interface. By connecting the power supply and the cleaning liquid, the continuous cleaning function of the automatic cleaning device is realized. The travel assembly 420 includes wheels arranged at the bottom of the body 410, and the wheels are provided with three or more, at least one of which is a power wheel, which has braking and steering functions.

[0043] The telescopic nozzle assembly 1 is arranged on the side of the vertical moving assembly 2, and includes a swing nozzle unit 110, a scissors-type telescopic arm 120 and a telescopic driving mechanism 130. The swing nozzle unit 110 is arranged at the front end of the scissors-type telescopic arm 120, and includes a row of nozzles 111 composed of multiple nozzles. The row of nozzles 111 is connected to the cleaning pump group by a pipeline; by swinging the nozzle unit 110, the cleaning range can be increased and the cleaning efficiency can be improved. The telescopic driving mechanism 130 includes an electric cylinder arranged on the scissors-type telescopic arm 120, which is connected to the control assembly 5 for communication. Under the control of the control assembly 5, the electric cylinder drives the scissors-type telescopic arm 120 to extend to a specified position to ensure that the distance between the swing nozzle unit 110 and the fin is consistent. After completing the cleaning task, the electric cylinder is controlled to drive the scissors-type telescopic arm 120 to retract to facilitate the transportation of the trolley 4. The rear end of the scissor telescopic arm 120 is fixed on the second fixing frame, and the second fixing frame is slidably mounted on the vertical moving assembly 2 through the slider guide rail, so that it can drive the telescopic nozzle assembly 1 to move vertically along the guide rail provided on the vertical moving assembly 2. The pipeline and wire group can be constrained by the wire harness 8 to avoid interference with other functional components.

[0044] Furthermore, if Figure 2-3 As shown, in order to wash the fins at multiple angles and improve the cleaning efficiency, the oscillating nozzle unit 110 drives the row of nozzles 111 to swing horizontally repeatedly by means of a crank-connecting rod mechanism, so that the sprayed high-pressure water cleans various parts of the fins, avoiding dead corners that cannot be cleaned, and improving the cleaning efficiency while also improving the cleaning quality.

[0045] The swinging spray head unit 110 includes a row of spray heads 111, a first fixed frame 112, a rotating joint 113, a bearing with a seat 114, a first driving motor 115, a crank wheel 116 and a swing rod 117. The first fixed frame 112 is fixedly connected to the front end of the scissor telescopic arm 120; the rotating joint 113 and the bearing with a seat 114 are fixedly connected to the first fixed frame 112 respectively; the upper and lower ends of the row of spray heads 111 are rotatably connected to the rotating joint 113 and the bearing with a seat 114 respectively; the first driving motor 115 is fixedly arranged in the first fixed frame 112, and its motor shaft is fixedly connected to the crank wheel 116; the rocker provided on the crank wheel 116 is limited in sliding movement in the limit groove provided on the swing rod 117; one end of the swing rod 117 is fixedly connected to the row of spray heads 111. The crank wheel 116 is driven to rotate by the first driving motor 11, and the rocker pushes the swing rod 117 to swing back and forth within a certain angle range, thereby driving the row of nozzles 111 to swing horizontally repeatedly, and the swing angle range can reach 0-52°, thereby realizing the "spraying" effect of simulating a person holding a spray gun on the cleaned surface, effectively improving the cleaning efficiency and quality.

[0046] The vertical moving assembly 2 includes a vertical support bracket 210, a first ball screw 220 and a second drive motor 230. The bottom of the vertical support bracket 210 is slidably arranged on the top of the horizontal moving assembly 3 through a slider guide rail, and the first ball screw 220 is rotatably arranged on the vertical support bracket 210 at both ends, and its top end is fixedly connected to the motor shaft of the second drive motor 230 arranged on the top of the vertical support bracket 210, and a first screw slider is arranged on its body; the screw slider is fixedly connected to the second fixed frame; the second drive motor 230 is connected to the control assembly 5 in communication, and under the control of the control assembly 5, the second drive motor 230 drives the first ball screw 220 to rotate, so that the second fixed frame connected to the first screw slider is displaced in the vertical direction, thereby adjusting the horizontal height of the telescopic nozzle assembly 1, so that the swing nozzle unit 110 is aligned with the fin.

[0047] like Figure 4-6 As shown, the horizontal moving assembly 3 includes an upper moving plate 310, a middle moving plate 320, a lower fixed plate 330 and a displacement driving mechanism 340 which are slidably connected in sequence, wherein the lower fixed plate 330 is fixed to the top of the vehicle body 410 by bolts, the bottom of the middle moving plate 320 is slidably connected to the lower fixed plate 330 by means of a slider guide, and the bottom of the upper moving plate 310 is slidably connected to the middle moving plate 320 by means of a slider guide.

[0048] The displacement driving mechanism 340 includes a ball screw module, a gear rack displacement multiplication module, and a chain sprocket driving module.

[0049] like Figure 4As shown, the ball screw module is arranged on the top of the lower fixed plate 330, including a second ball screw 342 arranged on the top of the fixed plate 330 that is rotated by a rotating frame, a servo motor 341 arranged in parallel with the second ball screw 342, and synchronous wheels are respectively arranged on one end of the second ball screw 342 and the motor shaft of the servo motor 341, and the two sets of synchronous wheels are connected and driven by a synchronous belt. A second screw slider is also arranged on the second ball screw 342, which is fixedly connected to the middle moving plate 320. Under the control of the control component 5, the servo motor 341 drives the second ball screw 342 to rotate, so that the second screw slider drives the middle moving plate 320 to perform horizontal linear displacement on the lower fixed plate 330.

[0050] The gear rack displacement multiplication module includes a linkage gear 343 provided on the middle moving plate 320 that is rotated by a linkage gear frame, and racks 344 that are respectively fixed to the bottom of the upper moving plate 310 and the lower fixed plate 330, and the top and bottom of the linkage gear 343 are respectively meshed with two sets of racks 344. When the middle moving plate 320 performs a linear displacement, the linkage gear 343 is driven to rotate. Since the rack 344 provided on the lower fixed plate 330 remains fixed, the linkage gear 343 drives the upper moving plate 310 to move. The upper moving plate 310 moves at a displacement speed that is twice that of the middle moving plate 320, and its displacement distance is twice that of the middle moving plate 320, achieving the effect of displacement range increase.

[0051] like Figure 5-6 As shown, the chain sprocket drive module includes sprockets 346 respectively rotatably arranged at both ends of the upper moving plate 310, two groups of chains 315 respectively meshing with the two groups of sprockets 346, and chain end fixing frames 347 respectively arranged at the bottom of the vertical support bracket 210 and on the middle moving plate 320. The two groups of chains 315 are respectively fixedly connected to the chain end fixing frames 347 to form a closed loop. When the gear rack displacement multiplication module drives the upper moving plate 310 to move at a displacement speed twice that of the middle moving plate 320, a differential speed is formed between the upper moving plate 310 and the middle moving plate 320. Since one end of the chain 315 is fixedly connected to the middle moving plate 320, the sprocket 346 is driven to rotate under the action of tension, so that the vertical support bracket 210 fixedly connected to the other end of the chain 315 is linearly displaced along the upper moving plate 310.

[0052] The horizontal moving assembly 3 of the present invention is provided with a displacement driving mechanism 340. Under the drive of the servo motor 341, a ball screw module, a gear rack displacement multiplication module, and a chain sprocket driving module are adopted to realize power transmission to the center moving plate 320, the upper moving plate 310 and the vertical support bracket 210 respectively, so that the three are synchronously linked and linearly displaced, thereby increasing the horizontal working range of the telescopic nozzle assembly 1. Without increasing the width of the trolley 4, the telescopic nozzle assembly 1 can achieve a working displacement distance of twice the width of the trolley 4, avoiding the staff from moving the trolley 4 back and forth, and reducing the labor intensity of the staff.

[0053] The control component 5 includes a control panel and a control module arranged on the vehicle body 410. By inputting instructions on the control panel, the control module can control relevant functional components to realize the flushing function.

[0054] Preferably, a manual spray gun 6 is also provided on the top of the trolley 4, which is connected to the cleaning pump group pipeline. The "automatic cleaning" mode is switched to "manual cleaning" through a manual valve 7 provided on the side of the vehicle body 410. The staff can hold the manual spray gun 6 for cleaning, which can be used as a backup for re-cleaning stubborn dirt and dead corners on the fins.

[0055] The present invention also provides a method for automatically cleaning oil-cooled radiating fins of a rail transit motor vehicle, comprising the following steps:

[0056] S100: Move the trolley 4 and brake it to face the surface to be cleaned, so that the swing nozzle unit 110 is between 200 and 300 mm away from the surface to be cleaned;

[0057] S200: starting the cleaning pump group, and the swing nozzle unit 110 sprays a vertical fan-shaped water jet;

[0058] S300: The crank wheel 116 and the swing rod 117 are driven by the first driving motor 115 to rotate the row of nozzles 111, so that the swing nozzle unit 110 swings horizontally repeatedly, forming a high-pressure water jet to wash the fins at multiple angles, achieving a "cleaning" effect on the cleaning surface;

[0059] S400: Through the program setting of the control component 5, the vertical and horizontal reciprocating movements of the swing nozzle unit 110 are realized under the action of the vertical moving component 2 and the horizontal moving component 3, forming a rectangular closed cleaning range, and completing the automatic cleaning work of the cleaning surface;

[0060] S500: Switch the "automatic cleaning" mode to "manual cleaning" through the manual valve 7, and use the handheld manual spray gun 6 to perform additional cleaning on stubborn dirt and dead corners.

[0061] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic cleaning device for oil-cooled fins of rail transit motor vehicles, characterized in that: include: The trolley (4) comprises a trolley body (410) and a traveling assembly (420); A horizontal moving assembly (3) disposed on the top of the vehicle body (410), comprising a displacement driving mechanism (340), and an upper moving plate (310), a middle moving plate (320), and a lower fixed plate (330) that are slidably connected in sequence, wherein the lower fixed plate (330) is fixedly disposed on the top of the trolley (4); A vertical moving assembly (2) slidably disposed on the top of the upper moving plate (310), comprising a vertical support bracket (210), a first ball screw (220) and a second drive motor (230); The telescopic nozzle assembly (1) arranged on the side of the vertical moving assembly (2) comprises a scissor-type telescopic arm (120), a swing nozzle unit (110) arranged at the front end of the scissor-type telescopic arm (120), and a telescopic driving mechanism (130) arranged on the scissor-type telescopic arm (120); the swing nozzle unit (110) comprises a row of nozzles (111), a first fixed frame (112), a rotating joint (113), a seat bearing (114), a first driving motor (115), a crank wheel (116) and a swing rod (117); and a control component (5) disposed on the vehicle body (410); The displacement drive mechanism (340) comprises a ball screw module disposed on the lower fixed plate (330), a gear rack displacement multiplication module disposed on the middle moving plate (320), and a chain sprocket drive module disposed on the upper moving plate (310); the chain sprocket drive module comprises sprockets (346) respectively rotatably disposed at both ends of the upper moving plate (310), two groups of chains (315) respectively meshing with the two groups of sprockets (346), and chain end fixing frames (347) respectively disposed at the bottom of the vertical support bracket (210) and on the middle moving plate (320), the two groups of chains (315) respectively being fixedly connected to the chain end fixing frames (347) to form a closed loop; the ball screw module comprises a sprocket (346) disposed on the lower fixed plate (330) and rotating through a rotating frame. ) at the top of the upper movable plate (310), a servo motor (341) arranged in parallel with the second ball screw (342), a synchronous wheel being respectively arranged at one end of the second ball screw (342) and on the motor shaft of the servo motor (341), and the two sets of synchronous wheels being connected and driven by a synchronous belt; the second ball screw (342) is also provided with a second screw slider, and the second screw slider is fixedly connected to the middle movable plate (320); the gear rack displacement multiplication module comprises a linkage gear (343) rotatably arranged on the middle movable plate (320), and racks (344) respectively fixedly arranged on the bottom of the upper movable plate (310) and the lower fixed plate (330), and the top and bottom of the linkage gear (343) are respectively meshed with the two sets of racks (344); The control component (5) controls the horizontal moving component (3) to drive the vertical moving component (2) to move linearly in the horizontal direction, and controls the vertical moving component (2) to drive the telescopic driving mechanism (130) to move linearly in the vertical direction, thereby realizing the vertical and horizontal reciprocating movement of the swing nozzle unit (110), forming a rectangular closed cleaning range, and completing the automatic cleaning of the cleaning surface.

2. The automatic cleaning device for oil cooling fins of a rail transit motor vehicle according to claim 1 is characterized in that: The first fixed frame (112) is fixedly connected to the front end of the scissor-type telescopic arm (120); the rotating joint (113) and the seat bearing (114) are respectively fixedly connected to the first fixed frame (112); the upper and lower ends of the row of nozzles (111) are respectively rotatably connected to the rotating joint (113) and the seat bearing (114); the first driving motor (115) is fixedly arranged in the first fixed frame (112), and its motor shaft is fixedly connected to the crank wheel (116); a rocker is provided on the crank wheel (116), and its sliding limit is located in a limit groove provided on the swing rod (117); one end of the swing rod (117) is fixedly connected to the row of nozzles (111).

3. An automatic cleaning device for oil cooling fins of a rail transit motor vehicle according to any one of claims 1-2, characterized in that: The rear end of the scissor-type telescopic arm (120) is fixedly mounted on a second fixed frame, and the second fixed frame is slidably mounted on the vertical moving assembly (2) through a slider guide rail, so that the telescopic nozzle assembly (1) is displaced in the vertical direction along the guide rail provided on the vertical moving assembly (2).

4. An automatic cleaning device for oil cooling fins of a rail transit motor vehicle according to any one of claims 1-2, characterized in that: The bottom of the vertical support bracket (210) is slidably arranged on the top of the horizontal moving component (3) through a slider guide rail, and the first ball screw (220) is rotatably arranged on the vertical support bracket (210) at both ends, and its top end is fixedly connected to the motor shaft of the second drive motor (230) arranged on the top of the vertical support bracket (210), and a first screw slider is provided on the body of the screw; the first screw slider is fixedly connected to the second fixed frame.

5. An automatic cleaning device for oil cooling fins of a rail transit motor vehicle according to any one of claims 1-2, characterized in that: The vehicle body (410) comprises a profile frame and a sheet metal door, and is provided with a battery pack, a liquid storage tank and a cleaning pump group therein; the battery provides electrical energy to other functional components; the cleaning pump group pumps cleaning liquid in the liquid storage tank into the swinging nozzle unit (110), thereby flushing the fins of the oil-cooled radiator.

6. An automatic cleaning device for oil cooling fins of a rail transit motor vehicle according to any one of claims 1-2, characterized in that: The control component (5) comprises a control panel and a control module arranged on the vehicle body (410); commands are input through the control panel, and the control module can control relevant functional components to realize a flushing function.

7. An automatic cleaning device for oil cooling fins of a rail transit motor vehicle according to any one of claims 1-2, characterized in that: It also includes a manual spray gun (6) arranged on the top of the vehicle body (410), and a manual valve (7) arranged on the side of the vehicle body (410).

8. An automatic cleaning method for oil cooling fins of a rail transit motor vehicle, using the automatic cleaning device according to claim 7, characterized in that: The following steps are involved: S100: moving the trolley (4) and braking to position it to face the surface to be cleaned, so that the swing nozzle unit (110) is between 200 and 300 mm away from the surface to be cleaned; S200: starting the cleaning pump group, and the swinging nozzle unit (110) sprays a vertical fan-shaped water jet; S300: driven by the first driving motor (115), the crank wheel (116) and the swing rod (117) drive the row of nozzles (111) to rotate, so that the swing nozzle unit (110) swings horizontally and repeatedly, forming a high-pressure water jet to flush the fins at multiple angles, thereby achieving a "cleaning" effect on the cleaning surface; S400: by setting the program of the control component (5), the vertical and horizontal reciprocating movements of the oscillating nozzle unit (110) are realized under the action of the vertical moving component (2) and the horizontal moving component (3), thereby forming a rectangular closed cleaning range and completing the automatic cleaning of the cleaning surface; S500: Switch the "automatic cleaning" mode to "manual cleaning" through the manual valve (7), and use the handheld manual spray gun (6) to clean stubborn dirt and dead corners.

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