Spraying equipment for charging pile processing and production
By designing a charging pile spraying equipment combining limiting components, adjustment components and servo motors, the problems of low spraying efficiency and inconvenient operation in the prior art are solved, efficient and automated rotary spraying are achieved, and spraying quality and efficiency are improved.
Patent Information
- Application Number
- CN202510410296.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2025-05-13
AI Technical Summary
In the existing charging pile processing and production, it is difficult for spraying equipment to achieve efficient and automated spraying operations, especially when the charging pile is heavy and needs to rotate, the operating efficiency is low.
A spraying equipment for the processing and production of charging piles is designed, and the coordination of limiting components and adjustment components is used to realize the rapid fixation of the device and charging pile and the automatic positioning of the spraying components. By driving the rotation of the movable frame and longitudinal guide rails by the servo motor, the circumferential rotation of the high-pressure nozzle is realized and the rotation spraying is completed.
The spraying efficiency is significantly improved, and automatic positioning and rotary spraying without handheld spraying operation is achieved, ensuring uniform spraying on the surface of the charging pile and improving the spraying quality.
Smart Images

Figure CN119972426A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of charging pile processing, and specifically relates to a spraying device for charging pile processing and production. Background Art
[0002] The spraying process in the processing and production of charging piles is a crucial step. Charging piles are exposed to the outdoor environment for a long time, facing wind, sun, rain, snow and various complex climate tests. High-quality spray coating can provide a solid protective layer for charging piles, effectively resist the erosion of ultraviolet rays, and prevent the shell material from aging, fading, and becoming brittle due to long-term exposure to the sun. At the same time, in the face of corrosive substances such as acid rain and saline-alkali mist, the protective film formed by spraying can play an isolating role, preventing the charging pile shell from being corroded and rusted, thereby ensuring the stable operation of its internal precision electronic components.
[0003] When processing and spraying the charging pile, special spraying equipment will be used for the spraying operation. The current spraying equipment is mainly composed of a spray gun and a workbench. When spraying, the charging pile and the workbench need to be fixed and then the spraying operation is carried out by the spray gun. However, the spraying device is not fixed to the charging pile, resulting in the need to hold the spray gun for spraying, and the spraying efficiency is low.
[0004] When spraying the charging pile, the entire surface of the charging pile needs to be sprayed. For this purpose, the charging pile needs to be rotated during spraying to achieve all-round spraying. However, the charging pile is heavy, which makes it inconvenient to rotate during the entire spraying process, and improvement is urgently needed. Summary of the invention
[0005] The purpose of the present invention is to provide a spraying device for charging pile processing and production to solve the problems raised in the above-mentioned background technology.
[0006] In order to achieve the above-mentioned objectives, the present invention provides the following technical solutions: a spraying equipment for charging pile processing and production, comprising a transverse guide rail, wherein extension plates are fixedly installed on the left and right sides near the middle of the transverse guide rail, a movable frame is provided in the middle of the top end of the transverse guide rail, and limiting components are installed on the left and right sides of the bottom end, and the bottom end of the limiting component is movably connected to the transverse guide rail, a guide rod is fixedly installed in the middle of the bottom end of the movable frame, and the bottom end of the guide rod passes through the middle of the bottom end of the transverse guide rail, and the guide rod moves up and down relative to the transverse guide rail, a servo motor is fixedly installed on the top end of the movable frame, and a frame is fixedly installed on the output end of the servo motor, and a longitudinal guide rail is fixedly installed on the bottom end of the frame, and the frame rotates relative to the movable frame, and the internal movably connected with a spraying component of the longitudinal guide rail, and an adjustment component is installed between the limiting component and the extension plate.
[0007] Before spraying the charging pile, the anti-corrosion liquid to be sprayed can be injected into the interior of the spray component, and the device can be placed directly above the charging pile. At the same time, the power of the device is turned on, and the spraying height is adjusted to the highest point to complete the preparation before spraying.
[0008] As a further technical solution of the present invention, the bottom end of the guide rod is movably connected with a turntable, and the bottom end of the turntable is fixedly mounted with a magnet.
[0009] Before spraying, the magnet and the top of the charging pile can be adsorbed to each other. After the adsorption is completed, the transverse guide rail can be placed on the top of the charging pile to complete the preliminary preparation work.
[0010] As a further technical solution of the present invention, the limit assembly includes a transverse guide block, which is movably connected to the transverse guide rail. The transverse guide block is displaced left and right relative to the transverse guide rail, and a clamping plate is fixedly installed at the bottom end of the transverse guide block.
[0011] As a further technical solution of the present invention, a second fixing seat is fixedly installed on the top of each of the transverse guide blocks, and one end of the second fixing seat away from the transverse guide block is movably connected to a connecting rod via a rotating shaft.
[0012] As a further technical solution of the present invention, the end of the connecting rod away from the second fixed seat is movably connected to the first fixed seat through a rotating shaft, the top of the first fixed seat is connected to the bottom end of the movable frame, and the two first fixed seats are located on the left and right sides of the bottom end of the movable frame.
[0013] Before actual spraying, the clamping plates can be pulled to both sides to apply tension to the two lateral guide blocks. At this time, the two lateral guide blocks will be displaced relative to the lateral guide rails, that is, the two lateral guide blocks will be driven away from each other. At this time, the two connecting rods located at the top will deflect toward the middle and drive the movable frame at the top to move downward.
[0014] As a further technical solution of the present invention, the adjustment assembly includes a fixed tube, which is connected to the extension plate. The internal movable sleeve of the fixed tube is provided with a piston plate, one end of the piston plate is fixedly connected with a piston rod, and the piston rod passes through one side of the fixed tube and is connected to the transverse guide block.
[0015] As a further technical solution of the present invention, a limit spring is movably sleeved on the outer side of the piston rod, and the left and right ends of the limit spring are respectively connected to one side of the fixed tube and one side of the piston plate. When the limit spring is in an initial state, the distance between the fixed tube and the transverse guide block is a minimum value.
[0016] When the two lateral guide blocks move away from each other, pulling force can be applied to the piston rod, and the piston rod will then move away from the fixed tube, and the limit spring will be compressed. When the two clamps are moved to both sides of the charging pile, the pulling force applied to the two clamps can be stopped, and the limit spring will reset and drive the piston rod to move toward the fixed tube. At this time, the two clamps will approach each other until they come into contact with the side of the charging pile, completing the limiting and fixing process between the limiting assembly and the charging pile. At this time, the movable frame is adjusted to a suitable height and is located in the middle position of the top of the charging pile, waiting for the spraying assembly to be used for spraying.
[0017] By utilizing the cooperation between the limit assembly and the adjustment assembly, the device can be quickly fixed to the charging pile before spraying. After the fixation is completed, the horizontal position of the spraying assembly is determined. At the same time, the movable frame is located in the middle position of the top of the charging pile. The entire spraying process does not require hand-held spraying operation, and the positioning process is automatically completed, which significantly improves the overall spraying efficiency.
[0018] When the spraying is completed around the charging pile and only the clamping position has not been sprayed, the movable frame can be pressed downward. At this time, the two connecting rods will deflect in the direction away from the middle and drive the two lateral guide blocks away from each other. At this time, the two clamping plates will move away from each other, and the limit on the side of the charging pile can be automatically released. At this time, the movable frame can be rotated with the middle of the turntable as a circle until the two clamping plates are moved to the other two sides of the charging pile and the limit on the movable frame is released. The limiting component and the adjusting component can be automatically reset to complete the fixing process of the device and the other side of the charging pile, and the previous clamping position can be sprayed, further improving the spraying efficiency.
[0019] By re-coordinating the limit assembly and the adjustment assembly and rotating the turntable, the device can quickly switch the clamping position without repositioning to spray the previous clamping position. The whole process can be completed quickly, significantly shortening the waiting time for spraying and further improving the overall spraying efficiency.
[0020] As a further technical solution of the present invention, the spray assembly includes a spray tank, the bottom end of which is connected to the top of the frame, the top of the spray tank is fixedly connected to a spray hose, a negative pressure pump is built into the interior of the spray tank, the interior of the spray tank is filled with a preservative liquid, and the spray assembly also includes a longitudinal guide block.
[0021] As a further technical solution of the present invention, the longitudinal guide block is movably connected to the longitudinal guide rail, and the longitudinal guide block moves up and down relative to the longitudinal guide rail. Operating rods are fixedly installed on both ends of the left and right ends of the longitudinal guide block. One end of the longitudinal guide block close to the transverse guide rail is fixedly connected to a high-pressure nozzle, and the end of the spray hose away from the spray tank is connected to the high-pressure nozzle.
[0022] After the center point of the charging pile is positioned, the negative pressure pump inside the spray tank can be turned on, and the anti-corrosion liquid can be output to the inside of the spray hose through the negative pressure pump, and then introduced into the inside of the high-pressure nozzle through the spray hose. At this time, it can be sprayed out through the high-pressure nozzle to spray the surface of the charging pile. At the same time, the operating lever can be pulled to drive the longitudinal guide block to move relative to the longitudinal guide rail to complete the decrease in the spraying height. At the same time, the servo motor can be turned on to drive the frame to rotate, and drive the longitudinal guide rail to rotate circumferentially, and finally drive the high-pressure nozzle to rotate circumferentially relative to the charging pile to complete the rotary spraying process.
[0023] By utilizing the cooperation between the limiting component, the adjusting component and the movable frame, the device and the charging pile can be quickly fixed, and the center point can be determined at the same time, which is used as the center point when the spraying component rotates. The high-pressure nozzle can rotate circumferentially around the center point of the charging pile, and rotary spraying can be quickly realized. The surface can be evenly sprayed without rotating the charging pile, thereby improving the spraying quality.
[0024] The beneficial effects of the present invention are as follows:
[0025] (1) The present invention utilizes the cooperation between the limit assembly and the adjustment assembly so that the device can be quickly fixed to the charging pile before spraying. After the fixation is completed, the horizontal position of the spraying assembly is determined, and the movable frame is located in the middle of the top of the charging pile. The entire spraying process does not require hand-held spraying operation, and the positioning process is automatically completed, which significantly improves the overall spraying efficiency.
[0026] (2) The present invention utilizes the cooperation between the limit assembly, the adjustment assembly and the movable frame to achieve rapid fixation of the device and the charging pile, and can also simultaneously determine the center point, which is used as the center point when the spray assembly rotates, so that the high-pressure nozzle can rotate circumferentially around the center point of the charging pile, and quickly realize rotary spraying. It is not necessary to rotate the charging pile to achieve a uniform spraying process on the surface, thereby improving the spraying quality.
[0027] (3) The present invention can quickly switch the clamping position without repositioning the device by re-coordinating the limit assembly and the adjustment assembly and rotating the turntable, so as to spray the previous clamping position. The whole process can be completed quickly, significantly shortening the waiting time for spraying and further improving the overall spraying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;
[0029] Figure 2 It is a schematic diagram of the coordination of the longitudinal guide rail and the spray assembly structure of the present invention;
[0030] Figure 3 It is an exploded schematic diagram of the longitudinal guide rail and the spray assembly structure of the present invention;
[0031] Figure 4 It is a separate cross-sectional schematic diagram of the spray assembly structure of the present invention;
[0032] Figure 5 It is an exploded schematic diagram of the transverse guide rail and the limit assembly structure of the present invention;
[0033] Figure 6 It is a schematic diagram of the coordination of the position limiting assembly, the movable frame and the adjusting assembly structure of the present invention;
[0034] Figure 7 It is a separate cross-sectional schematic diagram of the adjustment component structure of the present invention.
[0035] In the figure: 1. transverse guide rail; 2. extension plate; 3. limit assembly; 301. first fixed seat; 302. connecting rod; 303. second fixed seat; 304. transverse guide block; 4. movable frame; 5. servo motor; 6. adjustment assembly; 601. fixed tube; 602. piston plate; 603. piston rod; 604. limit spring; 7. clamping plate; 8. guide rod; 9. magnet; 10. turntable; 11. frame; 12. longitudinal guide rail; 13. spray assembly; 131. spray can; 132. spray hose; 133. longitudinal guide block; 134. high-pressure nozzle; 135. operating lever. DETAILED DESCRIPTION
[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments 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.
[0037] like Figures 1 to 7As shown, in an embodiment of the present invention, a spraying device for processing and producing charging piles includes a transverse guide rail 1, and the left and right sides of the transverse guide rail 1 near the middle are fixedly installed with extension plates 2, a movable frame 4 is provided in the middle of the top of the transverse guide rail 1, and the left and right sides of the bottom are installed with limit components 3, the bottom end of the limit component 3 is movably connected with the transverse guide rail 1, a guide rod 8 is fixedly installed in the middle of the bottom end of the movable frame 4, the bottom end of the guide rod 8 passes through the middle of the bottom end of the transverse guide rail 1, and the guide rod 8 moves up and down relative to the transverse guide rail 1, a servo motor 5 is fixedly installed at the top of the movable frame 4, and a frame 11 is fixedly installed at the output end of the servo motor 5, and a longitudinal guide rail 12 is fixedly installed at the bottom end of the frame 11, and the frame 11 rotates relative to the movable frame 4, and a spraying component 13 is movably connected inside the longitudinal guide rail 12, and an adjustment component 6 is installed between the limit component 3 and the extension plate 2.
[0038] Before spraying the charging pile, the anti-corrosion liquid to be sprayed can be injected into the interior of the spraying component 13, and the device can be placed directly above the charging pile. At the same time, the power of the device is turned on, and the spraying height is adjusted to the highest point to complete the preparation before spraying.
[0039] like Figure 1 and Figure 6 As shown, the bottom end of the guide rod 8 is movably connected to a turntable 10 , and the bottom end of the turntable 10 is fixedly mounted with a magnet 9 .
[0040] Before spraying, the magnet 9 and the top of the charging pile can be adsorbed to each other. After the adsorption is completed, the transverse guide rail 1 can be placed on the top of the charging pile to complete the preliminary preparation work.
[0041] like Figure 1 and Figure 5 as well as Figure 6 The limiting assembly 3 includes a transverse guide block 304, which is movably connected to the transverse guide rail 1, and the transverse guide block 304 is displaced left and right relative to the transverse guide rail 1. The bottom end of the transverse guide block 304 is fixedly installed with a clamping plate 7, and the top end of the transverse guide block 304 is fixedly installed with a second fixed seat 303. The end of the second fixed seat 303 away from the transverse guide block 304 is movably connected to a connecting rod 302 through a rotating shaft, and the end of the connecting rod 302 away from the second fixed seat 303 is movably connected to a first fixed seat 301 through a rotating shaft. The top end of the first fixed seat 301 is connected to the bottom end of the movable frame 4, and the two first fixed seats 301 are located on the left and right sides of the bottom end of the movable frame 4.
[0042] Before actual spraying, the clamping plate 7 can be pulled to both sides to apply tension to the two lateral guide blocks 304. At this time, the two lateral guide blocks 304 will be displaced relative to the lateral guide rail 1, that is, the two lateral guide blocks 304 will be driven away from each other. At this time, the two connecting rods 302 located at the top will deflect toward the direction close to the middle and drive the movable frame 4 at the top to move downward.
[0043] like Figure 5 and Figure 6 as well as Figure 7 As shown, the adjustment component 6 includes a fixed tube 601, which is connected to the extension plate 2. The fixed tube 601 is internally movably sleeved with a piston plate 602, and one end of the piston plate 602 is fixedly connected with a piston rod 603. The piston rod 603 passes through one side of the fixed tube 601 and is connected to the transverse guide block 304. The outer side surface of the piston rod 603 is movably sleeved with a limit spring 604. The left and right ends of the limit spring 604 are respectively connected to one side of the fixed tube 601 and one side of the piston plate 602. When the limit spring 604 is in the initial state, the distance between the fixed tube 601 and the transverse guide block 304 is a minimum value.
[0044] Embodiment: When the two lateral guide blocks 304 move away from each other, a pulling force can be applied to the piston rod 603, and the piston rod 603 is displaced in the direction away from the fixed tube 601. At the same time, the limit spring 604 is compressed. When the two clamps 7 are displaced to both sides of the charging pile, the application of pulling force to the two clamps 7 can be stopped, and the limit spring 604 is reset and drives the piston rod 603 to move in the direction close to the fixed tube 601. At this time, the two clamps 7 move closer to each other until they come into contact with the side of the charging pile, completing the limiting and fixing process between the limiting component 3 and the charging pile. At this time, the movable frame 4 is adjusted to a suitable height and is located in the middle position of the top of the charging pile, waiting for the spraying component 13 to be used for spraying.
[0045] By utilizing the cooperation between the limit component 3 and the adjustment component 6, the device can be quickly fixed to the charging pile before spraying. After the fixation is completed, the horizontal position of the spraying component 13 is determined, and the movable frame 4 is located in the middle position of the top of the charging pile. The entire spraying process does not require hand-held spraying operation, and the positioning process is automatically completed, which significantly improves the overall spraying efficiency.
[0046] When the spraying is completed around the charging pile and only the clamping position has not been sprayed, the movable frame 4 can be pressed downward, and the two connecting rods 302 will deflect in the direction away from the middle, and drive the two lateral guide blocks 304 to move away from each other. At this time, the two clamping plates 7 will move away from each other, and the limit on the side of the charging pile can be automatically released. At this time, the movable frame 4 can be rotated with the middle of the turntable 10 as a circle to drive the movable frame 4 to rotate until the two clamping plates 7 are moved to the other two sides of the charging pile and the limit on the movable frame 4 is released. The limiting component 3 and the adjusting component 6 can be automatically reset to complete the fixing process of the device and the other side of the charging pile, and the previous clamping position can be sprayed, further improving the spraying efficiency.
[0047] By re-coordinating the limit assembly 3 and the adjustment assembly 6 and rotating the turntable 10, the device can quickly switch the clamping position without repositioning to spray the previous clamping position. The whole process can be completed quickly, significantly shortening the waiting time for spraying and further improving the overall spraying efficiency.
[0048] like Figure 2 and Figure 3 as well as Figure 4 As shown, the spray assembly 13 includes a spray tank 131, the bottom end of the spray tank 131 is connected to the top of the frame 11, the top of the spray tank 131 is fixedly connected with a spray hose 132, a negative pressure pump is built into the interior of the spray tank 131, the interior of the spray tank 131 is filled with a preservative liquid, the spray assembly 13 also includes a longitudinal guide block 133, the longitudinal guide block 133 is movably connected to the longitudinal guide rail 12, the longitudinal guide block 133 is displaced up and down relative to the longitudinal guide rail 12, the left and right ends of the longitudinal guide block 133 are fixedly installed with operating rods 135, the end of the longitudinal guide block 133 close to the transverse guide rail 1 is fixedly connected with a high-pressure nozzle 134, and the end of the spray hose 132 away from the spray tank 131 is connected to the high-pressure nozzle 134.
[0049] Embodiment: After the center point of the charging pile is positioned, the negative pressure pump inside the spray tank 131 can be turned on, and the anti-corrosion liquid can be output to the inside of the spray hose 132 through the negative pressure pump, and introduced into the inside of the high-pressure nozzle 134 through the spray hose 132. At this time, it can be sprayed out through the high-pressure nozzle 134 to spray the surface of the charging pile. At the same time, the operating rod 135 can be pulled to drive the longitudinal guide block 133 to move relative to the longitudinal guide rail 12 to complete the decrease in the spraying height. At the same time, the servo motor 5 can be turned on to drive the frame 11 to rotate, and drive the longitudinal guide rail 12 to rotate circumferentially, and finally drive the high-pressure nozzle 134 to rotate circumferentially relative to the charging pile to complete the rotary spraying process.
[0050] By utilizing the cooperation between the limit component 3, the adjustment component 6 and the movable frame 4, the device and the charging pile can be quickly fixed, and the center point can be determined at the same time, which is used as the center point when the spray component 13 rotates, so that the high-pressure nozzle 134 can rotate circumferentially around the center point of the charging pile, and rotary spraying can be quickly realized. The surface can be evenly sprayed without rotating the charging pile, thereby improving the spraying quality.
[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 spraying device for charging pile processing and production, comprising a transverse guide rail (1), characterized in that: The transverse guide rail (1) is fixedly provided with an extension plate (2) on both sides near the middle, a movable frame (4) is provided in the middle of the top end of the transverse guide rail (1), and a limit assembly (3) is installed on both sides of the bottom end, the bottom end of the limit assembly (3) is movably connected with the transverse guide rail (1), and a guide rod (8) is fixedly provided in the middle of the bottom end of the movable frame (4), and the bottom end of the guide rod (8) passes through the middle of the bottom end of the transverse guide rail (1). For the up-and-down displacement of the transverse guide rail (1), a servo motor (5) is fixedly mounted on the top of the movable frame (4), a frame (11) is fixedly mounted on the output end of the servo motor (5), a longitudinal guide rail (12) is fixedly mounted on the bottom end of the frame (11), the frame (11) rotates relative to the movable frame (4), a spraying assembly (13) is movably clamped inside the longitudinal guide rail (12), and an adjustment assembly (6) is mounted between the limit assembly (3) and the extension plate (2).
2. The spraying equipment for charging pile processing and production according to claim 1 is characterized in that: The bottom end of the guide rod (8) is movably connected to a turntable (10), and the bottom end of the turntable (10) is fixedly mounted with a magnet (9).
3. The spraying equipment for charging pile processing and production according to claim 1 is characterized in that: The limit assembly (3) comprises a transverse guide block (304), the transverse guide block (304) being movably connected to the transverse guide rail (1), the transverse guide block (304) being displaced leftward and rightward relative to the transverse guide rail (1), and a clamping plate (7) being fixedly mounted on the bottom end of the transverse guide block (304).
4. The spraying equipment for charging pile processing and production according to claim 2 is characterized in that: A second fixing seat (303) is fixedly mounted on the top of each of the transverse guide blocks (304), and one end of the second fixing seat (303) away from the transverse guide block (304) is movably connected to a connecting rod (302) via a rotating shaft.
5. The spraying equipment for charging pile processing and production according to claim 4 is characterized in that: One end of the connecting rod (302) away from the second fixed seat (303) is movably connected to the first fixed seat (301) via a rotating shaft, the top end of the first fixed seat (301) is connected to the bottom end of the movable frame (4), and the two first fixed seats (301) are located on the left and right sides of the bottom end of the movable frame (4).
6. The spraying equipment for charging pile processing and production according to claim 4 is characterized in that: The adjustment assembly (6) comprises a fixed tube (601), wherein the fixed tube (601) is connected to the extension plate (2), a piston plate (602) is movably sleeved inside the fixed tube (601), one end of the piston plate (602) is fixedly connected to a piston rod (603), and the piston rod (603) passes through one side of the fixed tube (601) and is connected to the transverse guide block (304).
7. The spraying equipment for charging pile processing and production according to claim 6 is characterized in that: The outer side surface of the piston rod (603) is movably sleeved with a limit spring (604), and the left and right ends of the limit spring (604) are respectively connected to one side of the fixed tube (601) and one side of the piston plate (602). When the limit spring (604) is in an initial state, the distance between the fixed tube (601) and the transverse guide block (304) is a minimum value.
8. The spraying equipment for charging pile processing and production according to claim 1 is characterized by: The spray assembly (13) comprises a spray tank (131), the bottom end of the spray tank (131) is connected to the top end of the frame (11), the top end of the spray tank (131) is fixedly connected to a spray hose (132), a negative pressure pump is built into the interior of the spray tank (131), the interior of the spray tank (131) is filled with an antiseptic liquid, and the spray assembly (13) further comprises a longitudinal guide block (133).
9. The spraying equipment for charging pile processing and production according to claim 8 is characterized in that: The longitudinal guide block (133) is movably connected to the longitudinal guide rail (12), and the longitudinal guide block (133) moves up and down relative to the longitudinal guide rail (12). Operating rods (135) are fixedly installed at both left and right ends of the longitudinal guide block (133). One end of the longitudinal guide block (133) close to the transverse guide rail (1) is fixedly connected to a high-pressure nozzle (134), and one end of the spray hose (132) away from the spray tank (131) is connected to the high-pressure nozzle (134).