Automatic car washing machine

Abstract

An automatic car washing machine, comprising a guide rail (1), a guide rail walking part (2) and a cantilever (3), the guide rail walking part (2) being connected to the guide rail (1) and capable of moving along the guide rail (1). One end of the cantilever (3) is connected to the guide rail walking part (2), and the other end of the cantilever (3) is provided with a spray head part (4). The spray head part (4) comprises a substrate (13), an input pipe (38), a swing base (51), a swing support (31), a nozzle adjusting mechanism, an electric reversing valve (40) and a main connecting pipe (14), the substrate (13) is provided with a first swing driving mechanism, and the swing base (51) is provided with a second swing driving mechanism. The swing base (51) is provided with a water spray head (26) and a cleaning agent spray head (25), and the water spray head (26) is provided with a rotatable nozzle (27). An input end of the electric reversing valve (40) is connected to the input pipe (38), and an output end of the electric reversing valve (40) is connected to a first output branch pipe (39) and a second output branch pipe (52). The first output branch pipe (39) is connected to the cleaning agent spray head (25), and the second output branch pipe (52) is connected to the water spray head (26). The first swing driving mechanism and the second swing driving mechanism achieve multi-degree-of-freedom rotation of the water spray head and the cleaning agent spray head, thereby reducing cleaning blind spots and improving the cleaning effect.

Description

Automatic car wash machine Technical Field

[0001] The present invention relates to the technical field of car washers, in particular to an automatic car washer. Background Art

[0002] With technological advancements, car washes are becoming increasingly popular. Existing car washes typically include a guide rail with a running mechanism mounted on it. The running mechanism is connected to a cantilever, which is equipped with a nozzle. The nozzle is driven by the running mechanism and sprays water onto the vehicle. To wash a vehicle, a cleaning agent is first sprayed onto the vehicle, spread across the vehicle's surface, and then water is sprayed onto the vehicle's exterior by the car wash.

[0003] However, the existing car washing device has the following disadvantages:

[0004] 1. Car washing devices usually can only spray water, while cleaning agents still need to be sprayed manually, which increases labor costs.

[0005] 2. The nozzles of existing car washing devices can often only perform up and down pitch movements at a single angle and cannot rotate with multiple degrees of freedom. The nozzle steering flexibility is low, making it difficult for the nozzle to flexibly rotate to the required cleaning angle according to actual conditions, resulting in certain blind spots during cleaning and unsatisfactory cleaning effects.

[0006] Summary of the Invention

[0007] The purpose of the present invention is to solve the deficiencies in the prior art and provide an automatic car washing machine.

[0008] The object of the present invention is achieved through the following technical solution: an automatic car washing machine, comprising a guide rail, a guide rail running component, and a cantilever, wherein the guide rail running component is connected to the guide rail and can move along the guide rail; one end of the cantilever is connected to the guide rail running component, and the other end of the cantilever is provided with a nozzle component;

[0009] The nozzle assembly includes a base plate, an input pipe, a swing seat, a swing bracket, a nozzle adjustment mechanism, an electric reversing valve, and a main connecting pipe. The base plate is provided with a first swing drive mechanism, which connects the swing seat and the swing bracket and drives the swing seat and the swing bracket to swing around the first axis.

[0010] The swing seat is provided with a second swing drive mechanism, which is connected to the swing bracket and drives the swing bracket to swing around a second axis, and the first axis is perpendicular to the second axis; the swing seat is provided with a water nozzle and a cleaning agent nozzle, and the water nozzle is provided with a rotatable nozzle, and the nozzle is driven to rotate by the nozzle adjustment mechanism;

[0011] The input end of the electric reversing valve is connected to an input pipe, and the output end of the electric reversing valve is connected to a first output branch pipe and a second output branch pipe; the first output branch pipe is connected to the cleaning agent nozzle, and the second output branch pipe is connected to the water nozzle; the main connecting pipe and the input pipe are connected through a pipeline connection mechanism.

[0012] Preferably, the guide rail walking component includes a walking frame, the walking frame is slidably connected to the guide rail, the walking frame is provided with a walking drive device, the walking drive device is connected to a driving wheel, and the driving wheel contacts one side of the guide rail;

[0013] A cantilever swing device is provided on the walking frame, a driving shaft is provided on the cantilever swing device, and the driving shaft is connected with one end of the cantilever.

[0014] Preferably, the walking frame is provided with a first contact wheel and a second contact wheel, both of which are rotatably connected to the walking frame, the first contact wheel contacts the upper and lower sides of the guide rail; the second contact wheel contacts the left and right sides of the guide rail.

[0015] Preferably, the first swing drive mechanism includes a first swing motor, a hollow shaft, and a first position detection encoder, wherein the first swing motor is connected to a first gear, the hollow shaft is rotatably connected to the base plate, and the hollow shaft is provided with a second gear meshing with the first gear; the swing seat is connected to the hollow shaft; the first position detection encoder is connected to a third gear, and the third gear meshes with the second gear;

[0016] A connector is provided at one end of the hollow shaft, and a first ear shaft and a second ear shaft are respectively provided on both sides of the connector. The first ear shaft and the second ear shaft are coaxially arranged, and the swing bracket is rotatably connected to the first ear shaft and the second ear shaft.

[0017] Preferably, a first sensing plate is connected to the second gear, and a zero position sensor cooperating with the first sensing plate is provided on the base plate.

[0018] Preferably, the second swing drive mechanism includes a second swing motor arranged on the swing seat, the output shaft of the second swing motor is connected to the sixth gear, the swing bracket is connected to the fifth gear, and the fifth gear and the sixth gear are engaged; the output shaft of the second swing motor is also connected to the second position detection encoder.

[0019] Preferably, the nozzle adjustment mechanism includes a first target position sensor, a second target position sensor, a nozzle adjustment motor, and a ring gear arranged on the nozzle. A fourth gear is connected to the output shaft of the nozzle adjustment motor, and the fourth gear is engaged with the ring gear; a third sensor plate is provided on the ring gear, and the third sensor plate moves between the first target position sensor and the second target position sensor.

[0020] Preferably, the pipeline connection mechanism includes a first channel arranged in the hollow shaft and a second channel arranged in the second ear shaft, the first channel is connected to the second channel, one end of the main connecting pipe is connected to one end of the hollow shaft through a first rotary joint, and one end of the input pipe is connected to one end of the second ear shaft through a second rotary joint.

[0021] Preferably, the electric reversing valve is connected to a reversing drive shaft, which is connected to a reversing motor; a second induction plate is connected to the reversing drive shaft; and a first reversing position sensor and a second reversing position sensor are respectively provided on both sides of the reversing drive shaft;

[0022] When the second induction plate rotates to the position of the first reversing position sensor, the input pipe is connected to the first output branch; when the second induction plate rotates to the position of the second reversing position sensor, the input pipe is connected to the second output branch.

[0023] The present invention has the following beneficial effects:

[0024] 1. The present invention can spray water and detergent at the same time, and the two working modes can be switched through an electric switching valve, which solves the problem that traditional car washing devices require manual spraying of detergent.

[0025] 2. In the present invention, the water nozzle and the cleaning agent nozzle can be rotated with multiple degrees of freedom through the first swing drive mechanism and the second swing drive mechanism. The nozzle on the water nozzle can also be rotated and adjusted to adjust the direction of the jet. In this way, the water nozzle and the cleaning agent nozzle can flexibly reach the required spray angle position, which can better clean the vehicle, reduce cleaning blind spots, and improve the cleaning effect.

[0026] 3. The nozzle on the water nozzle can be rotated and adjusted to adjust the angle, direction and spray effect of the jet to ensure the actual flushing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] FIG1 is a schematic structural diagram of the present invention.

[0028] Figure 2 is a schematic structural diagram of the guide rail walking component.

[0029] FIG3 is a schematic structural diagram of the nozzle component in one direction.

[0030] FIG4 is a schematic structural diagram of the nozzle component from another direction.

[0031] FIG5 is a schematic diagram of the local structure of the electric reversing valve on the nozzle component.

[0032] FIG6 is an enlarged view of portion A in FIG4 .

[0033] FIG7 is a schematic diagram of the local structure of the swing seat position on the nozzle component.

[0034] FIG8 is a front view of the nozzle assembly at the position of the swing seat.

[0035] FIG9 is a cross-sectional view taken along line BB in FIG8 .

[0036] In the figure: 1. guide rail, 2. guide rail walking component, 3. cantilever, 4. nozzle component, 5. walking frame, 6. first contact wheel, 7. second contact wheel, 8. walking drive device, 9. driving wheel, 10. cantilever swing device, 11. driving shaft, 13. base plate, 14. main connecting pipe, 16. first swing motor, 17. first gear, 18. first rotary joint, 19. hollow shaft, 20. second gear, 21. first induction plate, 22. zero position sensor, 23. third gear, 24. first position detection encoder, 25. cleaning agent nozzle, 26. water nozzle, 27. nozzle, 28. gear ring, 29. fourth gear, 30. nozzle adjustment motor , 31. Swing bracket, 32. Connector, 33. Fifth gear, 34. Sixth gear, 35. Second swing motor, 36. Second position detection encoder, 37. Second rotary joint, 38. Input pipe, 39. First output branch, 40. Electric reversing valve, 41. Reversing motor, 42. First reversing position sensor, 43. Second reversing position sensor, 44. Second induction plate, 45. Third induction plate, 46. First target position sensor, 47. Second target position sensor, 48. First ear shaft, 49. Second ear shaft, 50. Reversing drive shaft, 51. Swing seat, 52. Second output branch, 53. First channel, 54. Second channel. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention are within the scope of protection of the present invention.

[0038] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0039] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the elements may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0040] As shown in Figures 1 to 9, an automatic car washer includes a control system, a guide rail 1, a guide rail running component 2, and a cantilever 3. The guide rail running component 2 is connected to the guide rail 1 and can move along the guide rail 1. One end of the cantilever 3 is connected to the guide rail running component 2, and the other end of the cantilever 3 is provided with a nozzle component 4.

[0041] The guide rail travel component 2 includes a traveling frame 5, which is slidably connected to the guide rail 1. The traveling frame 5 is provided with a first contact wheel 6 and a second contact wheel 7, both of which are rotatably connected to the traveling frame 5. The first contact wheel 6 is located on the upper and lower sides of the guide rail 1, and the first contact wheel 6 contacts the upper and lower sides of the guide rail 1. The second contact wheel 7 is located on the left and right sides of the guide rail 1, and the second contact wheel 7 contacts the left and right sides of the guide rail 1.

[0042] The traveling frame 5 is provided with a travel drive device 8, to which a drive wheel 9 is connected. The drive wheel 9 contacts one side of the guide rail 1. The travel drive device 8 drives the drive wheel 9 to rotate, and the rotation of the drive wheel 9 drives the traveling frame 5 to move along the guide rail 1. The travel drive device 8 is electrically connected to the control system.

[0043] The cantilever swing device 10 is provided with a drive shaft 11, which is connected to one end of the cantilever 3. The cantilever 3 is driven to swing in a vertical plane by the cantilever swing device 10. The cantilever swing device 10 is electrically connected to a control system.

[0044] The nozzle assembly 4 includes a base plate 13, an inlet pipe 38, a swing seat 51, a swing bracket 31, a nozzle adjustment mechanism, an electric reversing valve 40, and a main connecting pipe 14. The base plate 13 is fixedly connected to the cantilever 3 and is provided with a first swing drive mechanism. The first swing drive mechanism connects the swing seat 51 and the swing bracket 31 and drives the swing seat 51 and the swing bracket 31 to swing about a first axis.

[0045] The first swing drive mechanism includes a first swing motor 16, a hollow shaft 19, and a first position detection encoder 24. The first swing motor 16 is mounted on the base plate 13 and is electrically connected to the control system. A first gear 17 is connected to the first swing motor 16, and the hollow shaft 19 is rotatably connected to the base plate 13. A second gear 20 is mounted on the hollow shaft 19, meshing with the first gear 17. A swing base 51 is connected to the hollow shaft 19. The swing base 51 is fixedly connected to the hollow shaft 19 and rotates with the hollow shaft 19.

[0046] A first position detection encoder 24 is fixedly mounted on the base plate 13 and electrically connected to the control system. A third gear 23 is connected to the first position detection encoder 24, and the third gear 23 meshes with the second gear 20. When the hollow shaft 19 rotates, the second gear 20 drives the third gear 23 to rotate, and the first position detection encoder 24 detects the angular state of the hollow shaft 19.

[0047] A first sensing plate 21 is connected to the second gear 20, and a zero position sensor 22 is provided on the base plate 13 to cooperate with the first sensing plate 21. When the first sensing plate 21 rotates to a position directly opposite the zero position sensor 22, the hollow shaft 19 reaches the zero angle state. In the present invention, the zero position sensor 22 is an infrared sensor and is electrically connected to the control system.

[0048] A cylindrical connector 32 is provided at one end of the hollow shaft 19. The connector 32 is integrally formed with the hollow shaft 19. A first trunnion 48 and a second trunnion 49 are coaxially arranged on either side of the connector. The swing bracket 31 is rotatably connected to the first and second trunnions 48, 49. Rotation of the hollow shaft 19 drives the swing bracket 31 in rotation. As the swing bracket 31 rotates with the hollow shaft 19, it simultaneously rotates around the first and second trunnions 48, 49.

[0049] A second swing drive mechanism is provided on the swing base 51. The second swing drive mechanism is connected to the swing bracket 31 and drives the swing bracket 31 to swing about a second axis, with the first axis being perpendicular to the second axis. The second swing drive mechanism includes a second swing motor 35 disposed on the swing base 51. The second swing motor 35 is electrically connected to the control system. The output shaft of the second swing motor 35 is connected to a sixth gear 34. The swing bracket 31 is connected to a fifth gear 33, which is coaxially arranged with the first ear shaft 48 and the second ear shaft 49. The fifth gear 33 meshes with the sixth gear 34. The output shaft of the second swing motor 35 is also connected to a second position detection encoder 36, which is electrically connected to the control system. The second swing motor 35 drives the sixth gear 34 to rotate, which in turn drives the fifth gear 33 to rotate. The second position detection encoder 36 can detect the rotation angle of the motor, and thus the angular state of the swing bracket 31.

[0050] The swing base 51 is equipped with a water nozzle 26 and a detergent nozzle 25. The water nozzle 26 is equipped with a rotatable nozzle 27, which is driven to rotate by a nozzle adjustment mechanism. The nozzle adjustment mechanism includes a first target position sensor 46, a second target position sensor 47, a nozzle adjustment motor 30, and a ring gear 28 mounted on the nozzle 27. The nozzle adjustment motor 30 is fixed to the swing base 31 and electrically connected to the control system. A fourth gear 29 is connected to the output shaft of the nozzle adjustment motor 30, which meshes with the ring gear 28. After passing through the water nozzle 26, water forms a flat jet. The nozzle adjustment motor 30 adjusts the rotation angle of the nozzle 27, thereby adjusting the angle of the jet. A third sensor 45 is mounted on the ring gear 28, which moves between the first target position sensor 46 and the second target position sensor 47. Both the first and second target position sensors 46 and 47 are infrared sensors. Both the first and second target position sensors 46 and 47 are electrically connected to the control system. When the third sensing plate 45 rotates to the position corresponding to the first target position sensor 46, the angle between the flat jet ejected from the nozzle 27 and the vertical plane is 15 degrees. When the third sensing plate 45 rotates to the position corresponding to the second target position sensor 47, the angle between the flat jet ejected from the nozzle 27 and the vertical plane is 40 degrees.

[0051] The input end of the electric reversing valve 40 is connected to the input pipe 38, and the output end of the electric reversing valve 40 is connected to the first output branch pipe 39 and the second output branch pipe 52. The first output branch pipe 39 is connected to the cleaning agent nozzle 25, and the second output branch pipe 52 is connected to the water nozzle 26. The main connecting pipe 14 and the input pipe 38 are connected by a pipe connection mechanism.

[0052] The electric reversing valve 40 is connected to a reversing drive shaft 50, which is connected to a reversing motor 41. The reversing motor 41 drives the reversing shaft to rotate, thereby switching the conduction state of the electric reversing valve 40. The reversing motor 41 is electrically connected to the control system. A second sensor plate 44 is connected to the reversing drive shaft 50. A first reversing position sensor 42 and a second reversing position sensor 43 are located on either side of the reversing drive shaft 50. Both the first and second reversing position sensors 42 and 43 are infrared sensors and are electrically connected to the control system. When the second sensor plate 44 rotates to the position of the first reversing position sensor 42, the input pipe 38 is connected to the first output branch 39. When the second sensor plate 44 rotates to the position of the second reversing position sensor 43, the input pipe 38 is connected to the second output branch 52.

[0053] The pipe connection mechanism includes a first channel 53 disposed within the hollow shaft 19 and a second channel 54 disposed within the second trunnion 49. The interior of the connector 32 is a hollow structure, with the first channel 53 and the second channel 54 communicating. One end of the main connecting pipe 14 is connected to one end of the hollow shaft 19 via a first rotary joint 18, and one end of the input pipe 38 is connected to one end of the second trunnion 49 via a second rotary joint 37. This internal pipe connection mechanism allows the passage for water or cleaning agent to pass through the interior of the hollow shaft 19 and the second trunnion 49, eliminating the need for additional external connecting pipes. This reduces the complexity of the pipe layout and avoids the risk of collision and interference between external pipes and moving parts (such as gears, swing bracket 31, and swing seat 51).

[0054] Main connecting pipe 14 is connected to both the water tank and the cleaning agent tank, and the water and cleaning agent share this single pipe. When water spraying is required, electric reversing valve 40 switches to a state where the input pipe 38 and the second output branch pipe 52 are in communication. Water then flows through main connecting pipe 14, first channel 53, second channel 54, input pipe 38, electric reversing valve 40, and second output branch pipe 52, reaching sprinkler head 26 and finally being sprayed out through nozzle 27 on sprinkler head 26.

[0055] When it is necessary to spray the cleaning agent, the electric reversing valve 40 switches to a state where the input pipe 38 and the first output branch pipe 39 are connected, and the cleaning agent passes through the main connecting pipe 14, the first channel 53, the second channel 54, the input pipe 38, the electric reversing valve 40, the first output branch pipe 39 in sequence and reaches the cleaning agent nozzle 25, and is finally sprayed out through the cleaning agent nozzle 25.

[0056] The present invention has the following advantages:

[0057] 1. The present invention can spray water and detergent at the same time, and the two working modes can be switched through an electric switching valve, which solves the problem that traditional car washing devices require manual spraying of detergent.

[0058] 2. In the present invention, the water nozzle 26 and the cleaning agent nozzle 25 can be rotated with multiple degrees of freedom through the first swing drive mechanism and the second swing drive mechanism. The nozzle 27 on the water nozzle 26 can also be rotated and adjusted to adjust the direction of the jet. In this way, the water nozzle 26 and the cleaning agent nozzle 25 can flexibly reach the required spray angle position, which can better clean the vehicle, reduce cleaning blind spots, and improve the cleaning effect.

[0059] 3. The main connecting pipe 14 and the input pipe 38 are connected through a pipe connecting mechanism. This built-in pipe connecting mechanism allows the channel for water or cleaning agent to pass through the hollow shaft 19 and the second ear shaft 49. There is no need to arrange additional connecting pipes on the outside, which reduces the complexity of the pipe layout and avoids the risk of collision and interference between external pipes and moving parts (such as gears, swing bracket 31, and swing seat 51).

[0060] 4. The nozzle on the water nozzle can be rotated and adjusted to adjust the angle, direction and spray effect of the jet to ensure the actual flushing effect.

[0061] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone can derive other forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, any technical solution that is the same or similar to that of the present application falls within the scope of protection of the present invention.

Claims

1. An automatic car washer, characterized in that, it includes a guide rail (1), a guide rail traveling component (2), and a cantilever (3). The guide rail traveling component (2) is connected to the guide rail (1) and can move along the guide rail (1); one end of the cantilever (3) is connected to the guide rail traveling component (2), and a nozzle component (4) is provided at the other end of the cantilever (3); The nozzle component (4) includes a base plate (13), an input pipe (38), a swing seat (51), a swing bracket (31), a nozzle adjustment mechanism, an electric reversing valve (40), and a main connecting pipe (14). A first swing driving mechanism is provided on the base plate (13), and the first swing driving mechanism is connected to the swing seat (51) and the swing bracket (31) and drives the swing seat (51) and the swing bracket (31) to swing around a first axis; A second swing driving mechanism is provided on the swing seat (51), and the second swing driving mechanism is connected to the swing bracket (31) and drives the swing bracket (31) to swing around a second axis. The first axis is perpendicular to the second axis; a water nozzle (26) and a cleaning agent nozzle (25) are provided on the swing seat (51), and a rotatable nozzle (27) is provided on the water nozzle (26), and the nozzle (27) is driven to rotate by the nozzle adjustment mechanism; The input end of the electric reversing valve (40) is connected to an input pipe (38), and the output end of the electric reversing valve (40) is connected to a first output branch pipe (39) and a second output branch pipe (52); the first output branch pipe (39) is connected to the cleaning agent nozzle (25), and the second output branch pipe (52) is connected to the water nozzle (26); the main connecting pipe (14) and the input pipe (38) are connected by a pipeline connection mechanism.

2. The automatic car washer according to claim 1, characterized in that, the guide rail traveling component (2) includes a traveling frame (5), the traveling frame (5) is slidably connected to the guide rail (1), a traveling driving device (8) is provided on the traveling frame (5), a driving wheel (9) is connected to the traveling driving device (8), and the driving wheel (9) contacts one side of the guide rail (1); a cantilever swing device (10) is provided on the traveling frame (5), a driving shaft (11) is provided on the cantilever swing device (10), and the driving shaft (11) is connected to one end of the cantilever (3).

3. The automatic car washer according to claim 2, characterized in that, a first contact wheel (6) and a second contact wheel (7) are provided on the traveling frame (5), both the first contact wheel (6) and the second contact wheel (7) are rotatably connected to the traveling frame (5), the first contact wheel (6) contacts the upper and lower sides of the guide rail (1); the second contact wheel (7) contacts the left and right sides of the guide rail (1).

4. The automatic car washer according to any one of claims 1-3, characterized in that, The first swing drive mechanism includes a first swing motor (16), a hollow shaft (19), and a first position detection encoder (24). A first gear (17) is connected to the first swing motor (16). The hollow shaft (19) is rotatably connected to the substrate (13), and a second gear (20) meshing with the first gear (17) is provided on the hollow shaft (19); the swing seat (51) is connected to the hollow shaft (19); a third gear (23) is connected to the first position detection encoder (24), and the third gear (23) meshes with the second gear (20); One end of the hollow shaft (19) is provided with a connecting body (32). A first trunnion (48) and a second trunnion (49) are respectively provided on both sides of the connecting body (32). The first trunnion (48) and the second trunnion (49) are coaxially arranged, and the swing bracket (31) is rotatably connected to the first trunnion (48) and the second trunnion (49).

5. The automatic car washer according to claim 4, characterized in that, a first induction piece (21) is connected to the second gear (20), and a zero position sensor (22) cooperating with the first induction piece (21) is provided on the substrate (13).

6. The automatic car washer according to claim 4, characterized in that, the second swing drive mechanism includes a second swing motor (35) arranged on the swing seat (51). A sixth gear (34) is connected to the output shaft of the second swing motor (35). A fifth gear (33) is connected to the swing bracket (31), and the fifth gear (33) meshes with the sixth gear (34); the output shaft of the second swing motor (35) is simultaneously connected to a second position detection encoder (36).

7. The automatic car washer according to claim 4, characterized in that, the nozzle adjustment mechanism includes a first target position sensor (46), a second target position sensor (47), a nozzle adjustment motor (30), and a toothed ring (28) provided on the nozzle (27). A fourth gear (29) is connected to the output shaft of the nozzle adjustment motor (30), and the fourth gear (29) meshes with the toothed ring (28); a third induction piece (45) is provided on the toothed ring (28), and the third induction piece (45) moves between the first target position sensor (46) and the second target position sensor (47).

8. The automatic car washer according to claim 4, characterized in that, the pipeline connection mechanism includes a first channel (53) arranged in the hollow shaft (19) and a second channel (54) arranged in the second trunnion (49). The first channel (53) communicates with the second channel (54). One end of the main connecting pipe (14) is connected to one end of the hollow shaft (19) through a first rotary joint (18), and one end of the input pipe (38) is connected to one end of the second trunnion (49) through a second rotary joint (37).

9. The automatic car washer according to any one of claims 1-3, characterized in that, A reversing drive shaft (50) is connected to the electric reversing valve (40), and the reversing drive shaft (50) is connected to a reversing motor (41); a second induction piece (44) is connected to the reversing drive shaft (50); a first reversing position sensor (42) and a second reversing position sensor (43) are respectively arranged on both sides of the reversing drive shaft (50); When the second induction piece (44) rotates to the position of the first reversing position sensor (42), the input pipe (38) is communicated with the first output branch pipe (39); when the second induction piece (44) rotates to the position of the second reversing position sensor (43), the input pipe (38) is communicated with the second output branch pipe (52).

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