Automatic tank car washing arm

Abstract

The application discloses a kind of automatic cleaning arms of tank truck, including tank truck tank and support frame, the tank truck tank is located inside support frame, the support frame includes column and crossbeam, the crossbeam is fixed in the top of column, cleaning arm is movably installed on the crossbeam, the cleaning arm includes vertical telescopic arm and horizontal telescopic arm, the horizontal telescopic arm is installed at the bottom of vertical telescopic arm, the vertical telescopic arm and horizontal telescopic arm are rotatably connected by connector, one end of the horizontal telescopic arm is equipped with cleaning mechanism, the cleaning mechanism includes rotary motor, drive shaft and cross arm, one end of the rotary motor is drivingly connected with drive shaft, the cross arm is provided with several groups, the cross arm is circularly distributed outside drive shaft. The application realizes the automatic high-efficiency cleaning of tank truck tank, can flexibly adjust cleaning position and range, adapt to the internal structure of tank truck tank of different sizes and shapes.

Description

Technical Field

[0001] This invention relates to the field of automatic cleaning arms for tank trucks, specifically an automatic cleaning arm for tank trucks. Background Technology

[0002] After transporting various liquids, powders, and other materials, tank trucks require rigorous cleaning of their internal tanks to prevent cross-contamination between different materials and to ensure the cleanliness and safety of the tanks for future use. Currently, most tank truck cleaning still relies on manual labor, requiring workers to enter the tanks and use tools such as high-pressure water guns for cleaning.

[0003] This cleaning method has several problems: First, manual cleaning is inefficient, often taking a long time to clean a single tanker truck, leading to increased vehicle downtime and reduced transportation efficiency. Second, workers entering the tanker truck for cleaning pose significant safety hazards, as harmful gases may remain inside, potentially causing poisoning, suffocation, and other accidents. Furthermore, manual cleaning struggles to ensure uniformity and thoroughness, and is ineffective for complex structures and corners. While some automated cleaning equipment has emerged, their cleaning arms lack flexibility and cannot adapt well to the internal structures of tankers of varying sizes and shapes, limiting their cleaning range and failing to meet practical needs. Summary of the Invention

[0004] The purpose of this invention is to provide a solution to the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatic cleaning arm for tank trucks, comprising a tank truck body and a support frame, wherein the tank truck body is located inside the support frame, the support frame includes a column and a crossbeam, the crossbeam is fixed to the top of the column, and a cleaning arm is movably mounted on the crossbeam, the cleaning arm including a vertical telescopic arm and a horizontal telescopic arm, the horizontal telescopic arm being installed at the bottom of the vertical telescopic arm, the vertical telescopic arm and the horizontal telescopic arm being rotatably connected by a connector, a cleaning mechanism being installed at one end of the horizontal telescopic arm, the cleaning mechanism including a rotary motor, a drive shaft and cross arms, one end of the rotary motor being drively connected to the drive shaft, several sets of cross arms being arranged, the cross arms being circularly distributed outside the drive shaft, and a scrubbing assembly being installed on the cross arms, the scrubbing assembly including a swing frame, a swing motor and a brush plate.

[0006] Preferably, a movable seat is installed on the top of the cleaning arm, and the two sides of the movable seat are movably mounted on the crossbeam via rollers. A horizontal motion motor is installed on one side of the crossbeam, and the output end of the horizontal motion motor is connected to a transmission screw. The transmission screw is threadedly connected to the movable seat. Slide rods are provided on both sides of the movable seat, and the slide rods are slidably connected to the movable seat.

[0007] Preferably, the vertical telescopic arm and the horizontal telescopic arm are three-section telescopic arm structures. The bottom of the vertical telescopic arm is fixedly connected to a connector, and an adjusting motor is installed inside the connector. The output end of the adjusting motor is connected to the horizontal telescopic arm for transmission.

[0008] Preferably, the rotary motor is fixedly installed at one end of the horizontal telescopic arm, a first connecting block is fixedly installed on the drive shaft, the first connecting block is movably connected to one side of the cross arm via a pin, a screw motor is fixedly installed at one end of the drive shaft, a rotating screw is connected to the output end of the screw motor, a second connecting block is installed on the rotating screw, and the second connecting block is movably connected to the other side of the cross arm via a pin.

[0009] Preferably, the cross arm consists of two sets of intersecting support rods, which are movably connected in the middle by a pin. A support plate is installed on the top of the support rod, and one side of the bottom of the support plate is movably connected to the support rod by a pin. The other side of the bottom of the support plate is movably connected to another set of support rods through a rectangular hole.

[0010] Preferably, the swing frame is fixedly installed on the top of the support plate, and a transmission block is movably installed on the inner side of the swing frame. The two ends of the transmission block are movably connected to the swing frame through a rotating shaft. A swing rod is fixedly installed at the bottom of the transmission block. A cylindrical rod is provided at the center of the swing rod. A moving block is sleeved on the cylindrical rod. A connecting shaft is installed at the bottom of the moving block. A swing arm is fixedly installed at one end of the swing motor. One end of the swing arm is sleeved on the connecting shaft.

[0011] Preferably, a brush plate is fixedly installed on the top of the transmission block, a wire brush is fixedly installed at the center of the brush plate, a scraper is fixedly installed on one side of the brush plate, a direct spray nozzle is fixedly installed on the other side of the brush plate, and a rotating nozzle is fixedly installed at one end of the rotating screw.

[0012] Preferably, a rotating ring is movably mounted on the upper part of the horizontal telescopic arm. The rotating ring is sleeved on the horizontal telescopic arm through a bearing. A winch is mounted on one side of the rotating ring, and a lifting motor is mounted on one side of the winch. The lifting motor is connected to the winch in a transmission manner. A return water pipe is provided on the winch, and a counterweight is fixedly mounted at the bottom of the return water pipe.

[0013] Preferably, a wastewater tank and a hot water tank are installed on the top of the movable seat, a first water pump is installed at the bottom of the hot water tank, the first water pump is connected to a direct spray nozzle and a rotating spray nozzle through a pipe, and a second water pump is installed at the bottom of the wastewater tank, the second water pump is connected to a return water pipe through a pipe.

[0014] Preferably, the cleaning arm is further provided with a control unit, which includes a controller, a detection module and an operation panel. The controller is a PLC controller, used to receive signals from the detection module and control the operation of the rotary motor, vertical telescopic arm, horizontal telescopic arm, lifting motor, swing motor, screw motor, adjusting motor and high-pressure water pump components. The detection module includes a distance sensor, a vision camera and an angle sensor, with the distance sensor and vision camera installed on the telescopic arm or swing frame.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. This invention achieves automated and efficient cleaning of tank truck bodies through the design of an automatic cleaning arm. The cleaning arm has a vertical telescopic arm and a horizontal telescopic arm, which can flexibly adjust the cleaning position and range to adapt to the internal structure of tank truck bodies of different sizes and shapes. At the same time, the cleaning mechanism on the cleaning arm includes a rotary motor, a drive shaft and a cross arm. The cross arm is equipped with a scrubbing component, which can achieve comprehensive scrubbing of the inner wall of the tank.

[0017] 2. The cleaning arm of the present invention is also equipped with a wastewater tank and a hot water tank, as well as corresponding water pumps and nozzles, which can easily switch the cleaning medium and improve the cleaning effect. The wastewater tank is used to collect the wastewater generated during the cleaning process, while the hot water tank provides high-temperature cleaning water, which helps to remove stubborn stains and disinfect. The cooperation of the lifting motor and winch makes it easy to lift and lower and extend the return water pipe, which facilitates the recycling and treatment of wastewater during the cleaning process.

[0018] 3. The swing motor of this invention drives the transmission block and swing rod to swing through the swing arm, thereby driving the brush plate to scrub the inner wall of the tank. Since the swing rod is equipped with a cylindrical rod and a moving block at its center, the brush plate can generate a certain swing amplitude during the scrubbing process, thereby improving the uniformity and thoroughness of the scrubbing. At the same time, the combination of wire brush, scraper and direct spray nozzle can be used to clean different types of stains, improving the cleaning effect. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of another working state of the present invention;

[0021] Figure 3This is a schematic diagram of the side structure of the cleaning arm of the present invention;

[0022] Figure 4 This is a schematic diagram of the cleaning mechanism structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the cleaning component structure of the present invention;

[0024] Figure 6 This is a top view of the crossbeam structure of the present invention;

[0025] Figure 7 This is a schematic diagram of the rotating ring and return water pipe structure of the present invention.

[0026] In the diagram: 1. Tank truck body; 2. Support frame; 3. Column; 4. Crossbeam; 5. Cleaning arm; 6. Vertical telescopic arm; 7. Horizontal telescopic arm; 8. Connector; 9. Rotary motor; 10. Drive shaft; 11. Cross arm; 12. Swing frame; 13. Swing motor; 14. Brush plate; 15. Movable seat; 16. Horizontal motion motor; 17. Transmission screw; 18. Slide rod; 19. Adjusting motor; 20. First connecting block; 21. Screw motor; 22. Rotary screw; 23. 24. Second connecting block; 25. Support rod; 26. Support plate; 27. Transmission block; 28. Swing rod; 29. ​​Cylindrical rod; 30. Moving block; 31. Swing arm; 32. Connecting shaft; 33. Wire brush; 34. Direct spray nozzle; 35. Rotary nozzle; 36. Rotating ring; 37. Lifting motor; 38. Winch; 39. Return water pipe; 40. Wastewater tank; 41. Hot water tank; 42. First water pump; 43. Second water pump; 44. Counterweight; 45. Controller; 46. Operation panel. Detailed Implementation

[0027] 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.

[0028] Please see Figure 1-7This invention provides a technical solution for an automatic cleaning arm for tank trucks: it includes a tank truck body 1 and a support frame 2. The tank truck body 1 is located inside the support frame 2. The support frame 2 includes a column 3 and a crossbeam 4. The crossbeam 4 is fixed to the top of the column 3. A cleaning arm 5 is movably installed on the crossbeam 4. The cleaning arm 5 includes a vertical telescopic arm 6 and a horizontal telescopic arm 7. The horizontal telescopic arm 7 is installed at the bottom of the vertical telescopic arm 6. The vertical telescopic arm 6 and the horizontal telescopic arm 7 are rotatably connected by a connector 8. A cleaning mechanism is installed at one end of the horizontal telescopic arm 7. The cleaning mechanism includes a rotary motor 9, a drive shaft 10, and cross arms 11. One end of the rotary motor 9 is connected to the drive shaft 10. Several sets of cross arms 11 are arranged in a circular pattern on the outside of the drive shaft 10. A scrubbing assembly is installed on the cross arms 11. The scrubbing assembly includes a swing frame 12, a swing motor 13, and a brush plate 14.

[0029] Furthermore, a movable seat 15 is installed on the top of the cleaning arm 5. The two sides of the movable seat 15 are movably mounted on the crossbeam 4 via rollers. A horizontal motion motor 16 is installed on one side of the crossbeam 4. The output end of the horizontal motion motor 16 is connected to a transmission screw 17. The transmission screw 17 is threadedly connected to the movable seat 15. Slide rods 18 are provided on both sides of the movable seat 15. The slide rods 18 are slidably connected to the movable seat 15.

[0030] In this embodiment, when the horizontal motion motor 16 starts, it is connected to the movable seat 15 via a threaded transmission screw 17, pushing the movable seat 15 and its cleaning arm 5 to move horizontally on the crossbeam 4. The sliding rod 18 increases the stability of the movable seat 15 during movement, preventing it from shifting or shaking. This design allows the cleaning arm 5 to move horizontally along the circumference of the tanker truck body 1, expanding the cleaning range and improving cleaning efficiency. Simultaneously, the distance and angle between the cleaning mechanism and the tanker truck body 1 can be further adjusted by extending and retracting the vertical telescopic arm 6 and the horizontal telescopic arm 7, ensuring a more uniform and thorough cleaning effect.

[0031] Furthermore, the vertical telescopic arm 6 and the horizontal telescopic arm 7 are three-section telescopic arm structures. The bottom of the vertical telescopic arm 6 is fixedly connected to the connector 8. An adjusting motor 19 is installed inside the connector 8, and the output end of the adjusting motor 19 is connected to the horizontal telescopic arm 7 for transmission.

[0032] In this embodiment, when the adjusting motor 19 starts, it can drive the horizontal telescopic arm 7 to adjust its angle relative to the vertical telescopic arm 6, thereby enabling the cleaning mechanism to rotate flexibly in the vertical plane. The three-section telescopic arm structure design allows both the vertical telescopic arm 6 and the horizontal telescopic arm 7 to have telescopic functions, maintaining stable support and transmission effects at different lengths. Through precise control of the adjusting motor 19, it can be ensured that the cleaning mechanism accurately positions and cleans the surface of the tanker truck 1, avoiding cleaning dead zones that may exist in traditional cleaning methods.

[0033] Furthermore, the rotary motor 9 is fixedly installed at one end of the horizontal telescopic arm 7, and a first connecting block 20 is fixedly installed on the drive shaft 10. The first connecting block 20 is movably connected to one side of the cross arm 11 through a pin. A screw motor 21 is fixedly installed at one end of the drive shaft 10. The output end of the screw motor 21 is connected to a rotating screw 22. A second connecting block 23 is installed on the rotating screw 22. The second connecting block 23 is movably connected to the other side of the cross arm 11 through a pin.

[0034] In this embodiment, when the rotary motor 9 starts, it drives the drive shaft 10 to rotate, thereby causing the cross arm 11 to rotate. The first connecting block 20 and the second connecting block 23 serve as the connection points between the cross arm 11 and the drive mechanism, and are movably connected via a pin. The output end of the screw motor 21 is connected to the rotating screw 22. Through the rotational movement of the rotating screw 22, the second connecting block 23 can be pushed to move linearly along the rotating screw 22, thereby adjusting the opening angle and position of the cross arm 11. This design allows the cleaning mechanism to more flexibly adapt to tank truck bodies 1 of different shapes and sizes.

[0035] Furthermore, the cross arm 11 is composed of two sets of mutually intersecting support rods 24, with the middle of the two support rods 24 being movably connected by a pin. A support plate 25 is installed on the top of the support rod 24, and one side of the bottom of the support plate 25 is movably connected to the support rod 24 by a pin. The other side of the bottom of the support plate 25 is movably connected to another set of support rods 24 through a rectangular hole.

[0036] In this embodiment, the design of the cross arm 11 allows it to rotate flexibly under the drive of the drive mechanism and adjust the opening and closing angle. The two sets of intersecting support rods 24 are movably connected by pins, ensuring the stability and flexibility of the cross arm 11.

[0037] Furthermore, the swing frame 12 is fixedly installed on the top of the support plate 25, and a transmission block 26 is movably installed on the inner side of the swing frame 12. The two ends of the transmission block 26 are movably connected to the swing frame 12 through a rotating shaft. A swing rod 27 is fixedly installed at the bottom of the transmission block 26. A cylindrical rod 28 is provided at the center of the swing rod 27. A moving block 29 is sleeved on the cylindrical rod 28. A connecting shaft 31 is installed at the bottom of the moving block 29. A swing arm 30 is fixedly installed at one end of the swing motor 13. One end of the swing arm 30 is sleeved on the connecting shaft 31.

[0038] In this embodiment, the swing motor 13 drives the swing arm 30 to rotate, and the swing arm 30 drives the moving block 29 to slide on the cylindrical rod 28 through the connecting shaft 31, thereby causing the swing rod 27 and the transmission block 26 to swing accordingly.

[0039] Furthermore, a brush plate 14 is fixedly installed on the top of the transmission block 26, a wire brush 32 is fixedly installed at the center of the brush plate 14, a scraper is fixedly installed on one side of the brush plate 14, a direct spray nozzle 33 is fixedly installed on the other side of the brush plate 14, and a rotating nozzle 34 is fixedly installed at one end of the rotating screw 22.

[0040] In this embodiment, the wire brush 32 effectively removes dirt or impurities adhering to the surface. The scraper is used to further remove residues that are difficult to scrub, ensuring a clean cleaning effect. Simultaneously, the direct spray nozzle 33 and the rotating spray nozzle 34 spray water from different angles. The direct spray nozzle 33 provides a straight water stream to rinse away surface dirt, while the rotating spray nozzle 34 creates a wider cleaning range through rotation, enhancing the cleaning effect. This combination of brushing, scraping, and spraying significantly improves the cleaning efficiency and quality of the equipment.

[0041] Furthermore, a rotating ring 35 is movably mounted on the horizontal telescopic arm 7. The rotating ring 35 is sleeved on the horizontal telescopic arm 7 via bearings. A winch 37 is mounted on one side of the rotating ring 35, and a lifting motor 36 is mounted on one side of the winch 37. The lifting motor 36 is connected to the winch 37 in a transmission manner. A return water pipe 38 is provided on the winch 37, and a counterweight 43 is fixedly mounted at the bottom of the return water pipe 38.

[0042] In this embodiment, the lifting motor 36 drives the winch 37 to rotate, thereby controlling the lifting and lowering of the return water pipe 38. The rotating ring 35 is sleeved on the horizontal telescopic arm 7 through bearings, realizing the flexible rotation of the rotating ring 35. This provides the user with a more flexible operating angle, and the direction of the return water pipe 38 can be adjusted according to actual needs. The counterweight 43 can control the rotation of the rotating ring 35 so that the water inlet of the return water pipe 38 is located at the bottom of the tanker 1 of the tank truck.

[0043] Furthermore, a wastewater tank 39 and a hot water tank 40 are installed on the top of the movable seat 15. A first water pump 41 is installed at the bottom of the hot water tank 40. The first water pump 41 is connected to a direct spray nozzle 33 and a rotating spray nozzle 34 through a pipe. A second water pump 42 is installed at the bottom of the wastewater tank 39. The second water pump 42 is connected to a return water pipe 38 through a pipe.

[0044] In this embodiment, the first water pump 41 is responsible for pumping hot water from the hot water tank 40 to the direct spray nozzle 33 and the rotating spray nozzle 34 to provide high-temperature, high-pressure cleaning water flow, enhancing the cleaning effect. The direct spray nozzle 33 is mainly used for targeted rinsing to remove stubborn stains, while the rotating spray nozzle 34 achieves wider coverage cleaning through rotating spraying. The second water pump 42 is responsible for pumping wastewater from the wastewater tank 39 through a pipe to the return water pipe 38 to prevent contamination.

[0045] Furthermore, the cleaning arm 5 is also equipped with a control unit, which includes a controller 44, a detection module, and an operation panel 45. The controller 44 is a PLC controller 44, which is used to receive signals from the detection module and control the operation of the rotary motor 9, the vertical telescopic arm 6, the horizontal telescopic arm 7, the lifting motor 36, the swing motor 13, the screw motor 21, the adjusting motor 19, and the high-pressure water pump components. The detection module includes a distance sensor, a vision camera, and an angle sensor. The distance sensor and the vision camera are installed on the telescopic arm or the swing frame.

[0046] In this embodiment, a distance sensor is used to monitor the distance between the cleaning arm 5 and the inner wall of the tanker 1 in real time, avoiding damage caused by collisions and ensuring a tight fit between the cleaning head and the inner wall of the tank, thus improving cleaning efficiency. A camera is used to capture the position of the baffle holes inside the tank. After capturing the holes, the controller 44 controls the cleaning arm to enter the holes and clean the inside of the tank. Through the cooperation of the camera and the distance sensor, the cleaning arm enters the hole, completes one full rotation, and then exits the hole. Angle sensors monitor the rotation angles of actuators such as the rotary motor 9 and the swing motor 13, ensuring that the cleaning arm 5 can accurately reach the predetermined position for precise cleaning. By integrating the data from these sensors, the control unit achieves automated and intelligent cleaning operations, greatly improving cleaning efficiency and quality.

[0047] Working principle: During use, the operator first inputs the cleaning command through the operation panel 45. After receiving the command, the PLC controller 44 starts the horizontal motion motor 16. The horizontal motion motor 16 is connected to the movable seat 15 through the transmission screw 17, which pushes the movable seat 15 and the cleaning arm 5 on it to move horizontally on the crossbeam 4. At the same time, the PLC controller 44 controls the vertical telescopic arm 6 and the horizontal telescopic arm 7 to extend and retract, adjusting the distance between the cleaning mechanism and the tank body 1 of the tank truck, so that the cleaning arm 5 can smoothly enter the tank body 1 of the tank truck. The cleaning arm 5 can clean the two adjacent cavities by adjusting the direction of the motor 19 to rotate the cleaning arm 5. Next, the PLC controller 44 controls the rotary motor 9 to start, and the rotary motor 9 drives the drive shaft 10 to rotate, which in turn drives the cross arm 11 to rotate. At the same time, the output end of the screw motor 21 is connected to the rotary screw 22. Through the rotational movement of the rotary screw 22, the second connecting block 23 can be pushed to move linearly along the rotary screw 22, thereby adjusting the opening and closing angle and position of the cross arm 11, so that the cleaning mechanism can more flexibly adapt to tank truck tanks 1 of different shapes and sizes.

[0048] The swing motor 13 drives the swing arm 30 to rotate. The swing arm 30 drives the moving block 29 to slide on the cylindrical rod 28 via the connecting shaft 31, which in turn causes the swing rod 27 and the transmission block 26 to swing, driving the brush plate 14 to swing and clean. The wire brush 32 effectively removes dirt or impurities attached to it, while the scraper is used to further scrape off residues that are difficult to scrub. At the same time, the PLC controller 44 controls the first water pump 41 to start. The first water pump 41 is responsible for pumping hot water from the hot water tank 40 to the direct spray nozzle 33 and the rotating spray nozzle 34. The direct spray nozzle 33 provides a straight water flow to rinse surface dirt, while the rotating spray nozzle 34 forms a wider cleaning range by rotating and spraying. For areas where the internal structure of the tanker 1 is relatively complex, making it difficult for the cleaning arm 5 to move, the inner wall of the tanker 1 can be rinsed by increasing the water pressure. After cleaning, the PLC controller 44 starts the lifting motor 36, which drives the winch 37 to rotate, thereby controlling the lifting and lowering of the return water pipe 38 to recover wastewater into the wastewater tank 39 to prevent pollution. Throughout the cleaning process, distance sensors, vision cameras, and angle sensors monitor the distance and angle between the cleaning arm 5 and the inner wall of the tanker truck 1 in real time, ensuring that the cleaning arm 5 can move precisely along the preset trajectory and avoid collision damage.

[0049] After cleaning the three chambers on one side of the tanker truck body 1, repeat the above operation to enter the other side of the tanker truck body 1 through the inlet to clean the other three chambers.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

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

Claims

1. An automatic cleaning arm for tank trucks, comprising a tank truck body (1) and a support frame (2), characterized in that: The tanker truck body (1) is located inside a support frame (2). The support frame (2) includes a column (3) and a crossbeam (4). The crossbeam (4) is fixed to the top of the column (3). A cleaning arm (5) is movably mounted on the crossbeam (4). The cleaning arm (5) includes a vertical telescopic arm (6) and a horizontal telescopic arm (7). The horizontal telescopic arm (7) is installed at the bottom of the vertical telescopic arm (6). The vertical telescopic arm (6) and the horizontal telescopic arm (7) are rotatably connected by a connector (8). A cleaning mechanism is installed at one end of the horizontal telescopic arm (7). The cleaning mechanism includes a rotary motor (9), a drive shaft (10), and a cross arm (11). One end of the rotary motor (9) is connected to the drive shaft (10) for transmission. Several sets of cross arms (11) are provided. The cross arms (11) are distributed in a circle on the outside of the drive shaft (10). A scrubbing assembly is installed on the cross arms (11). The scrubbing assembly includes a swing frame (12), a swing motor (13), and a brush plate (14). The rotary motor (9) is fixedly installed at one end of the horizontal telescopic arm (7). A first connecting block (20) is fixedly installed on the drive shaft (10). The first connecting block (20) is movably connected to one side of the cross arm (11) through a pin. A screw motor (21) is fixedly installed at one end of the drive shaft (10). A rotating screw (22) is connected to the output end of the screw motor (21). A second connecting block (23) is installed on the rotating screw (22). The second connecting block (23) is movably connected to the other side of the cross arm (11) through a pin. The cross arm (11) consists of two sets of cross-arranged support rods (24), which are movably connected in the middle by a pin. A support plate (25) is installed on the top of the support rod (24), and one side of the bottom of the support plate (25) is movably connected to the support rod (24) by a pin. The other side of the bottom of the support plate (25) is movably connected to another set of support rods (24) through a rectangular hole. The swing frame (12) is fixedly installed on the top of the support plate (25). A transmission block (26) is movably installed on the inner side of the swing frame (12). The two ends of the transmission block (26) are movably connected to the swing frame (12) through a rotating shaft. A swing rod (27) is fixedly installed at the bottom of the transmission block (26). A cylindrical rod (28) is provided at the center of the swing rod (27). A moving block (29) is sleeved on the cylindrical rod (28). A connecting shaft (31) is installed at the bottom of the moving block (29). A swing arm (30) is fixedly installed at one end of the swing motor (13). One end of the swing arm (30) is sleeved on the connecting shaft (31). A brush plate (14) is fixedly installed on the top of the transmission block (26), a wire brush (32) is fixedly installed in the center of the brush plate (14), a scraper is fixedly installed on one side of the brush plate (14), a direct spray nozzle (33) is fixedly installed on the other side of the brush plate (14), and a rotating nozzle (34) is fixedly installed at one end of the rotating screw (22).

2. The automatic cleaning arm for tank trucks according to claim 1, characterized in that, The top of the cleaning arm (5) is equipped with a movable seat (15). The two sides of the movable seat (15) are movably mounted on the crossbeam (4) via rollers. A horizontal motion motor (16) is installed on one side of the crossbeam (4). The output end of the horizontal motion motor (16) is connected to a transmission screw (17). The transmission screw (17) is threadedly connected to the movable seat (15). Slide rods (18) are provided on both sides of the movable seat (15). The slide rods (18) are slidably connected to the movable seat (15).

3. The automatic cleaning arm for tank trucks according to claim 2, characterized in that, The vertical telescopic arm (6) and the horizontal telescopic arm (7) are three-section telescopic arm structures. The bottom of the vertical telescopic arm (6) is fixedly connected to the connector (8). An adjustment motor (19) is installed inside the connector (8). The output end of the adjustment motor (19) is connected to the horizontal telescopic arm (7) for transmission.

4. The automatic cleaning arm for tank trucks according to claim 3, characterized in that, A rotating ring (35) is movably mounted on the horizontal telescopic arm (7). The rotating ring (35) is sleeved on the horizontal telescopic arm (7) through a bearing. A winch (37) is mounted on one side of the rotating ring (35). A lifting motor (36) is mounted on one side of the winch (37). The lifting motor (36) is connected to the winch (37) in a transmission manner. A return water pipe (38) is provided on the winch (37). A counterweight (43) is fixedly installed at the bottom of the return water pipe (38).

5. The automatic cleaning arm for tank trucks according to claim 4, characterized in that, The top of the movable seat (15) is equipped with a wastewater tank (39) and a hot water tank (40). The bottom of the hot water tank (40) is equipped with a first water pump (41). The first water pump (41) is connected to a direct spray nozzle (33) and a rotating spray nozzle (34) through a pipe. The bottom of the wastewater tank (39) is equipped with a second water pump (42). The second water pump (42) is connected to a return water pipe (38) through a pipe.

6. The automatic cleaning arm for tank trucks according to claim 5, characterized in that, The cleaning arm (5) is also equipped with a control unit, which includes a controller (44), a detection module and an operation panel (45). The controller (44) is a PLC controller, which is used to receive signals from the detection module and control the operation of the rotary motor (9), the vertical telescopic arm (6), the horizontal telescopic arm (7), the lifting motor (36), the swing motor (13), the screw motor (21), the adjusting motor (19) and the high-pressure water pump components. The detection module includes a distance sensor, a vision camera and an angle sensor. The distance sensor and the vision camera are installed on the telescopic arm or the swing frame.

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