A cleaning device and method for a tank truck transporting dangerous chemical products

Abstract

The application discloses a cleaning device for transporting dangerous chemical product tank vehicles, which comprises a cleaning workshop, a mobile frame and a tank vehicle, wherein the mobile frame is provided with a cleaning lifting device, the cleaning lifting device is composed of a connecting shell and an electric cylinder, the connecting shell is movably penetrated through the mobile frame, the top of the connecting shell is provided with a driving assembly, the electric cylinder is installed on the inner side of the connecting shell, the bottom end of the electric cylinder is provided with a fixing cover, the inner cavity bottom of the fixing cover is provided with a connecting seat, the top of the connecting seat is rotatably connected with a rotating seat, and the top of the rotating seat is provided with a protective shell. The automatic system composed of the mobile frame, the cleaning lifting device and a multi-degree-of-freedom arc-shaped rod realizes closed cleaning without personnel entering the tank body, the operator only needs to remotely operate through the control cabinet, the personnel and the dangerous environment are physically isolated, and the biggest safety hidden danger in the industry is eliminated.

Description

Technical Field

[0001] This invention relates to the field of cleaning equipment technology, specifically to a cleaning device and method for tank trucks transporting hazardous chemical products. Background Technology

[0002] Tank trucks, as the primary land transport vehicle for liquid and semi-liquid hazardous chemicals (such as acids, alkalis, organic solvents, flammable liquids, and toxic substances), must undergo a thorough and safe cleaning of the interior of their tanks after each transport mission or before changing the type of cargo loaded. This is to prevent cross-contamination between different chemicals, uncontrollable chemical reactions (such as explosions, polymerization, and the release of toxic gases), and to ensure transport safety and product quality.

[0003] Currently, cleaning hazardous chemical tank trucks remains a high-risk and highly challenging operation. Existing technologies and methods suffer from the following significant drawbacks:

[0004] 1. Traditional cleaning methods heavily rely on manual labor. Cleaning personnel need to enter the sealed tank to perform high-pressure water jet washing and scrubbing. The tank may contain toxic, flammable, and explosive vapors, and there is a risk of oxygen deficiency. Even after purging, absolute safety cannot be guaranteed. This exposes cleaning workers to direct threats to their lives such as poisoning, suffocation, and explosions, posing the biggest safety hazard in the industry.

[0005] 2. The cleaning method using a handheld spray gun relies entirely on the operator's experience and physical strength for its coverage, spray angle, and pressure stability. For complex tank interiors, this can easily create cleaning dead zones. Residual chemicals can not only contaminate subsequent batches of products, but some self-polymerizing or reactive residues may also cause internal tank corrosion or safety accidents.

[0006] 3. Manual cleaning is inefficient. Cleaning a tanker truck takes a long time and the cleaning quality fluctuates greatly, which affects the turnover efficiency of the tanker truck. Summary of the Invention

[0007] The technical problem solved by this invention is to overcome the defects of the prior art and provide a cleaning device and method for tank trucks transporting hazardous chemical products.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A cleaning device for tank trucks transporting hazardous chemical products includes a cleaning workshop, a mobile truss, and the tank truck. The mobile truss is equipped with a cleaning lifting device, which consists of a connecting shell and an electric cylinder. The connecting shell movably penetrates the mobile truss. A drive assembly is located at the top of the connecting shell. The electric cylinder is installed inside the connecting shell, and a fixed cover is installed at the bottom of the electric cylinder. A connecting seat is installed at the bottom of the inner cavity of the fixed cover. A rotating seat is rotatably connected to the top of the connecting seat. A protective shell is installed on the top of the rotating seat. An arc-shaped rod extends through the rotating seat, and a nozzle is installed at the bottom of the arc-shaped rod. A chain is fixedly connected to the top of the arc-shaped rod. A second servo motor is installed near the right side of the top of the connecting seat. A third servo motor is installed on the left side of the rotating seat. A fourth and fifth servo motors are installed on the protective shell.

[0010] Preferably, a fixed frame is fixedly connected to the right side of the cleaning workshop, an operating platform is installed inside the fixed frame, two guide rails are fixedly connected to the inside of the fixed frame, and the movable frame is slidably connected to the top of the guide rails.

[0011] Preferably, the drive assembly includes a first servo motor, which is mounted on the top of the connecting housing. The power output end of the first servo motor is connected to a transmission rod, and gears are fixedly connected to both ends of the transmission rod. Two racks are mounted on the top of the movable frame.

[0012] Preferably, the two racks are located near the front and rear sides of the movable frame, respectively, and the gears mesh with the racks.

[0013] Preferably, the power output end of the second servo motor is connected to the rotating base via a transmission connection, the power output ends of the third and fifth servo motors are connected to the protective shell via a transmission connection, and the power output end of the fourth servo motor is connected to the chain drive connection.

[0014] Preferably, a movable tube is movably inserted into the rear side of the nozzle, and four nozzles are fixedly inserted into the outer side of the movable tube.

[0015] Preferably, a first laser sensor and a second laser sensor are installed at the bottom outer side of the arc-shaped rod, and a control cabinet is installed inside the cleaning workshop. The control cabinet is electrically connected to the electric cylinder, the first servo motor, the second servo motor, the third servo motor, the fourth servo motor, the fifth servo motor, the first laser sensor, and the second laser sensor.

[0016] Preferably, the top of the movable frame is equipped with two slide bars, the top of the slide bars is slidably connected to a slide rail, and the slide rail is fixedly connected to the connecting shell.

[0017] A method for cleaning a tank truck transporting hazardous chemical products includes the following steps:

[0018] Step 1: Park the tanker truck to be cleaned inside the cleaning workshop, and then control the moving frame to move horizontally through the control cabinet. The moving frame moves the nozzles and cleaning lifting device to be level with the top of the tanker. The moving frame slides on the top of the guide rail.

[0019] Step 2: Then, the first servo motor is controlled by the control cabinet. The first servo motor drives the gear to rotate through the transmission rod. The gear rolls on the top of the rack, thereby adjusting the horizontal position of the cleaning lifting device so that the cleaning lifting device moves to the top opening of the tank.

[0020] Step 3: Then, the electric cylinder in the control cabinet is activated. The electric cylinder drives the fixed cover, the arc rod, and the nozzle to move downwards. The arc rod and the nozzle move downwards until they pass through the top opening of the tank.

[0021] Step 4: The high-pressure water pump then starts supplying water, which is sprayed from the nozzles on the spray head. During this process, the second, third, fourth, and fifth servo motors are controlled by the control cabinet. The second servo motor controls the horizontal rotation of the rotating base, the arc rod, and the spray head. The third servo motor controls the vertical swing angle of the arc rod and the spray head in the forward and backward directions. The fourth servo motor controls the vertical swing angle of the arc rod and the spray head in the left and right directions. The fifth servo motor controls the depth to which the arc rod enters the tank. By adjusting the spray head progress at multiple angles, it is easy to clean the inside of the tank without dead angles.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] 1. This invention provides a cleaning device and method for tank trucks transporting hazardous chemical products, achieving automated cleaning with separation of personnel and tanks, eliminating personal safety risks. Addressing the life threats such as poisoning, suffocation, and explosions posed by existing technologies that rely on manual tank cleaning, this invention utilizes an automated system composed of a mobile truss, a cleaning lifting device, and a multi-degree-of-freedom arc rod to achieve a completely sealed cleaning process without personnel entering the tank. Operators can operate remotely from the outside via a control cabinet, physically isolating personnel from the hazardous environment and eliminating the industry's biggest safety hazard.

[0024] 2. The present invention provides a cleaning device and method for tank trucks transporting hazardous chemical products. Through precise control of multiple degrees of freedom, it achieves comprehensive cleaning of the tank without dead angles. Addressing the shortcomings of manual cleaning in terms of dead angles, the device uses the coordinated control of five servo motors to drive the nozzle to move precisely in four dimensions: horizontal rotation, vertical back-and-forth swing, vertical left-and-right swing, and depth advance and retreat. This multi-degree-of-freedom composite motion enables the high-pressure water jet to accurately cover every corner of the tank, including traditional dead angles such as complex baffles, welds, and manhole necks, ensuring the comprehensiveness and thoroughness of the cleaning and effectively preventing cross-contamination and safety hazards.

[0025] 3. This invention provides a cleaning device and method for tank trucks transporting hazardous chemical products, which significantly improves cleaning efficiency and quality consistency, accelerates tank truck turnover, and addresses the problems of low efficiency and unstable quality of manual cleaning. The fully automated process significantly shortens the cleaning time for a single tank truck, ensuring that each cleaning operation meets the same high-standard quality requirements, eliminating quality fluctuations caused by personnel fatigue and experience differences. This greatly improves the turnover efficiency of tank trucks; it can effectively clean the most prominent dark compartment in the middle of the tank truck, as previous cleaning devices could not clean the dark compartment. Attached Figure Description

[0026] Figure 1 This is a perspective view of a cleaning device and method for tank trucks transporting hazardous chemical products according to the present invention.

[0027] Figure 2 This is a sectional perspective view of a cleaning device and method for tank trucks transporting hazardous chemical products according to the present invention.

[0028] Figure 3 This invention relates to a cleaning device and method for tank trucks transporting hazardous chemical products. Figure 2 Enlarged view of point A in the middle;

[0029] Figure 4 This is a perspective view of the cleaning and lifting device, a component of the cleaning apparatus and method for a tank truck transporting hazardous chemical products according to the present invention.

[0030] Figure 5 This is a perspective view of the arc-shaped rod, a component of the cleaning device and method for tank trucks transporting hazardous chemical products according to the present invention.

[0031] Figure 6 This is a side view of the arc-shaped rod, a component of the cleaning device and method for tank trucks transporting hazardous chemical products according to the present invention.

[0032] Figure 7 This is a front view of the arc-shaped rod, a component of the cleaning device and method for tank trucks transporting hazardous chemical products according to the present invention.

[0033] Figure 8 This is a rear view of the nozzle, a component of the cleaning device and method for tank trucks transporting hazardous chemical products according to the present invention.

[0034] Numbered in the diagram: 1. Cleaning workshop; 2. Tank truck; 3. Fixed frame; 4. Operating platform; 5. Mobile scaffold; 6. Guide rail; 7. Cleaning lifting device; 8. Slide rail; 9. Slide bar; 10. Transmission rod; 11. First servo motor; 12. Gear; 13. Rack; 14. Electric cylinder; 15. Fixed cover; 16. Arc rod; 17. Nozzle; 18. Protective shell; 19. Connecting seat; 20. Second servo motor; 21. Third servo motor; 22. Fourth servo motor; 23. Fifth servo motor; 24. First laser sensor; 25. Second laser sensor; 26. Movable tube; 27. Nozzle; 28. Control cabinet; 29. ​​Rotating seat; 30. Connecting shell. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Example 1

[0037] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 A cleaning device for tank trucks transporting hazardous chemical products includes a cleaning workshop 1, a mobile truss 5, and a tank truck 2. The mobile truss 5 is equipped with a cleaning lifting device 7, which consists of a connecting shell 30 and an electric cylinder 14. The connecting shell 30 movably passes through the mobile truss 5. A fixed frame 3 is fixedly connected to the right side of the cleaning workshop 1. An operating platform 4 is installed inside the fixed frame 3. Two guide rails 6 are fixedly connected to the inside of the fixed frame 3. The mobile truss 5 is slidably connected to the top of the guide rails 6. A drive assembly is located at the top of the connecting shell 30. The moving component includes a first servo motor 11, which is mounted on the top of the connecting housing 30. The power output end of the first servo motor 11 is connected to a transmission rod 10, and gears 12 are fixedly connected to both ends of the transmission rod 10. Two racks 13 are mounted on the top of the movable frame 5, and the two racks 13 are respectively close to the front and rear sides of the movable frame 5. The gears 12 and racks 13 mesh with each other. Two slide bars 9 are mounted on the top of the movable frame 5, and slide rails 8 are slidably connected to the top of the slide bars 9. The slide rails 8 are fixedly connected to the connecting housing 30.

[0038] The electric cylinder 14 is installed inside the connecting shell 30. A fixed cover 15 is installed at the bottom of the electric cylinder 14. A connecting seat 19 is installed at the bottom of the inner cavity of the fixed cover 15. A rotating seat 29 is rotatably connected to the top of the connecting seat 19. A protective shell 18 is installed on the top of the rotating seat 29. An arc-shaped rod 16 is provided through the rotating seat 29. A nozzle 17 is installed at the bottom of the arc-shaped rod 16. A movable tube 26 is movably inserted into the rear side of the nozzle 17. Four nozzles 27 are fixedly inserted into the outer side of the movable tube 26. A chain is fixedly connected to the top of the arc-shaped rod 16.

[0039] A second servo motor 20 is installed on the top right side of the connecting seat 19. A third servo motor 21 is installed on the left side of the rotating seat 29. A fourth servo motor 22 and a fifth servo motor 23 are installed on the protective shell 18. The power output end of the second servo motor 20 is connected to the rotating seat 29. The power output ends of the third servo motor 21 and the fifth servo motor 23 are connected to the protective shell 18. The power output end of the fourth servo motor 22 is connected to the chain drive. A first laser sensor 24 and a second laser sensor 25 are installed on the outer bottom end of the arc rod 16. A control cabinet 28 is installed inside the cleaning workshop 1. The control cabinet 28 is electrically connected to the electric cylinder 14, the first servo motor 11, the second servo motor 20, the third servo motor 21, the fourth servo motor 22, the fifth servo motor 23, the first laser sensor 24, and the second laser sensor 25.

[0040] Example 2

[0041] A method for cleaning a tank truck transporting hazardous chemical products includes the following steps:

[0042] Step 1: Park the tanker truck 2 to be cleaned inside the cleaning workshop 1, and then control the moving frame 5 to move horizontally through the control cabinet 28. The moving frame 5 drives the nozzle 17 and the cleaning lifting device 7 to move to the top of the tanker truck. The moving frame 5 slides on the top of the guide rail 6.

[0043] Step 2: Then, the first servo motor 11 is controlled by the control cabinet 28. The first servo motor 11 drives the gear 12 to rotate through the transmission rod 10. The gear 12 rolls on the top of the rack 13, thereby adjusting the horizontal position of the cleaning lifting device 7, so that the cleaning lifting device 7 moves to the top opening of the tank.

[0044] Step 3: Then, the electric cylinder 14 of the control cabinet 28 works, and the electric cylinder 14 drives the fixed cover 15, the arc rod 16 and the nozzle 17 to move downward. The arc rod 16 and the nozzle 17 move downward to pass through the top opening of the tank.

[0045] Step 4: The high-pressure water pump then starts supplying water, and water is sprayed out from the nozzle 27 on the nozzle 17. During this process, the second servo motor 20, the third servo motor 21, the fourth servo motor 22, and the fifth servo motor 23 are controlled by the control cabinet 28. The second servo motor 20 controls the rotating seat 29, the arc rod 16, and the nozzle 17 to rotate horizontally. The third servo motor 21 controls the vertical back-and-forth swing angle of the arc rod 16 and the nozzle 17. The fourth servo motor 22 controls the vertical left-and-right swing angle of the arc rod 16 and the nozzle 17. The fifth servo motor 23 controls the depth to which the arc rod 16 enters the tank. By adjusting the progress of the nozzle 17 at multiple angles, it is easy to clean the inside of the tank without dead angles.

[0046] Working principle: The present invention discloses a cleaning device and method for tank trucks transporting hazardous chemical products. The tank truck 2 to be cleaned is parked inside the cleaning workshop 1. Then, the moving frame 5 is controlled by the control cabinet 28 to move horizontally. The moving frame 5 drives the nozzle 17 and the cleaning lifting device 7 to move to the top of the tank. The moving frame 5 slides on the top of the guide rail 6. Then, the first servo motor 11 is controlled by the control cabinet 28 to work. The first servo motor 11 drives the gear 12 to rotate through the transmission rod 10. The gear 12 rolls on the top of the rack 13, thereby adjusting the horizontal position of the cleaning lifting device 7, so that the cleaning lifting device 7 moves to the top opening of the tank.

[0047] The electric cylinder 14 in the control cabinet 28 operates, driving the fixed cover 15, the arc rod 16, and the nozzle 17 to move downwards. The arc rod 16 and the nozzle 17 move downwards until they pass through the top opening of the tank. Then, the high-pressure water pump starts supplying water, and water is sprayed out from the nozzle 27 on the nozzle 17. During this process, the control cabinet 28 controls the second servo motor 20, the third servo motor 21, the fourth servo motor 22, and the fifth servo motor 23 to operate. The second servo motor 20 controls the rotating seat 29, the arc rod 16, and the nozzle 17 to rotate horizontally. The third servo motor 21 controls the vertical back-and-forth swing angle of the arc rod 16 and the nozzle 17. The fourth servo motor 22 controls the vertical left-and-right swing angle of the arc rod 16 and the nozzle 17. The fifth servo motor 23 controls the depth to which the arc rod 16 enters the tank. By adjusting the progress of the nozzle 17 at multiple angles, it is easy to clean the inside of the tank without dead angles.

[0048] This invention achieves automated cleaning that separates personnel from the tank, eliminating personal safety risks. Addressing the life threats such as poisoning, suffocation, and explosions posed by existing technologies that rely on manual tank cleaning, this invention utilizes an automated system comprised of a movable truss 5, a cleaning lifting device, and a multi-degree-of-freedom arc rod 16. This system enables completely sealed cleaning without requiring personnel to enter the tank. Operators can remotely control the process from the outside via a control cabinet 28, physically isolating personnel from the hazardous environment and eliminating the industry's biggest safety hazard.

[0049] This invention achieves comprehensive cleaning of the tank without blind spots through precise multi-degree-of-freedom control. Addressing the shortcomings of manual cleaning in terms of blind spots, the invention uses the coordinated control of five servo motors to drive the nozzle 17 to move precisely in four dimensions: horizontal rotation, vertical forward and backward swing, vertical left and right swing, and depth advance and retreat. This multi-degree-of-freedom composite motion enables the high-pressure water jet to accurately cover every corner of the tank, including traditional blind spots such as structurally complex baffles, welds, and manhole necks, ensuring comprehensive and thorough cleaning and effectively preventing cross-contamination and safety hazards.

[0050] This invention significantly improves cleaning efficiency and quality consistency, and accelerates tank truck turnover. Addressing the issues of low efficiency and unstable quality in manual cleaning, the fully automated process significantly shortens the cleaning time for a single tank truck, ensuring that every cleaning operation meets the same high-standard quality requirements. It eliminates quality fluctuations caused by personnel fatigue and experience differences, which greatly improves the turnover efficiency of tank trucks.

[0051] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0053] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0054] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0055] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0056] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A cleaning device for tank trucks transporting hazardous chemical products, comprising a cleaning workshop (1), a mobile scaffold (5), and tank trucks (2), characterized in that: The movable truss (5) is equipped with a cleaning and lifting device (7), which consists of a connecting shell (30) and an electric cylinder (14). The connecting shell (30) movably penetrates the movable truss (5). A driving assembly is provided on the top of the connecting shell (30). The electric cylinder (14) is installed inside the connecting shell (30). A fixing cover (15) is installed at the bottom of the electric cylinder (14). A connecting seat (19) is installed at the bottom of the inner cavity of the fixing cover (15). A rotating seat (19) is rotatably connected to the top of the connecting seat (19). 29), a protective shell (18) is installed on the top of the rotating seat (29), an arc rod (16) is provided through the rotating seat (29), a nozzle (17) is installed at the bottom of the arc rod (16), a chain is fixedly connected to the top of the arc rod (16), a second servo motor (20) is installed near the right side of the top of the connecting seat (19), a third servo motor (21) is installed on the left side of the rotating seat (29), and a fourth servo motor (22) and a fifth servo motor (23) are installed on the protective shell (18).

2. The cleaning device for tank trucks transporting hazardous chemical products according to claim 1, characterized in that: A fixed frame (3) is fixedly connected to the right side of the cleaning workshop (1). An operating platform (4) is installed inside the fixed frame (3). Two guide rails (6) are fixedly connected inside the fixed frame (3). The movable frame (5) is slidably connected to the top of the guide rails (6).

3. The cleaning device for tank trucks transporting hazardous chemical products according to claim 1, characterized in that: The drive assembly includes a first servo motor (11), which is mounted on the top of the connecting shell (30). The power output end of the first servo motor (11) is connected to a transmission rod (10), and gears (12) are fixedly connected to both ends of the transmission rod (10). Two racks (13) are mounted on the top of the movable frame (5).

4. A cleaning device for tank trucks transporting hazardous chemical products according to claim 3, characterized in that: The two racks (13) are located near the front and rear sides of the movable frame (5), respectively, and the gear (12) meshes with the racks (13).

5. A cleaning device for tank trucks transporting hazardous chemical products according to claim 1, characterized in that: The power output end of the second servo motor (20) is connected to the rotating seat (29) for transmission, the power output ends of the third servo motor (21) and the fifth servo motor (23) are connected to the protective shell (18) for transmission, and the power output end of the fourth servo motor (22) is connected to the chain drive.

6. A cleaning device for tank trucks transporting hazardous chemical products according to claim 1, characterized in that: The nozzle (17) is movably connected to a movable tube (26) on its rear side, and four nozzles (27) are fixedly connected to the outside of the movable tube (26).

7. A cleaning device for tank trucks transporting hazardous chemical products according to claim 1, characterized in that: The outer bottom of the arc-shaped rod (16) is equipped with a first laser sensor (24) and a second laser sensor (25). The cleaning workshop (1) is equipped with a control cabinet (28). The control cabinet (28) is electrically connected to the electric cylinder (14), the first servo motor (11), the second servo motor (20), the third servo motor (21), the fourth servo motor (22), the fifth servo motor (23), the first laser sensor (24), and the second laser sensor (25).

8. A cleaning device for tank trucks transporting hazardous chemical products according to claim 1, characterized in that: The top of the movable frame (5) is equipped with two slide bars (9), and the top of the slide bars (9) is slidably connected to a slide rail (8), which is fixedly connected to the connecting shell (30).

9. A method of using a cleaning device for tank trucks transporting hazardous chemical products according to any one of claims 1-8, characterized in that, Includes the following steps: Step 1: Park the tank truck (2) to be cleaned inside the cleaning workshop (1), and then control the moving frame (5) to move horizontally through the control cabinet (28). The moving frame (5) drives the nozzle (17) and the cleaning lifting device (7) to move to the top of the tank. The moving frame (5) slides on the top of the guide rail (6). Step 2: Then, the first servo motor (11) is controlled by the control cabinet (28). The first servo motor (11) drives the gear (12) to rotate through the transmission rod (10). The gear (12) rolls on the top of the rack (13), thereby adjusting the horizontal position of the cleaning lifting device (7) so that the cleaning lifting device (7) moves to the top opening of the tank. Step 3: Then, the electric cylinder (14) of the control cabinet (28) is operated. The electric cylinder (14) drives the fixed cover (15), the arc rod (16) and the nozzle (17) to move downward. The arc rod (16) and the nozzle (17) move downward to pass through the top opening of the tank. Step 4: After that, the high-pressure water pump starts to supply water, and water is sprayed out from the nozzle (27) on the nozzle (17). During this process, the second servo motor (20), the third servo motor (21), the fourth servo motor (22), and the fifth servo motor (23) are controlled by the control cabinet (28). The second servo motor (20) controls the rotating seat (29), the arc rod (16), and the nozzle (17) to rotate horizontally. The third servo motor (21) controls the vertical back-and-forth swing angle of the arc rod (16) and the nozzle (17). The fourth servo motor (22) controls the vertical left-and-right swing angle of the arc rod (16) and the nozzle (17). The fifth servo motor (23) controls the depth of the arc rod (16) into the tank. By adjusting the progress of the nozzle (17) at multiple angles, it is convenient to clean the inside of the tank without dead angles.

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