A kind of painting equipment for a semi-trailer compartment

Abstract

The present invention belongs to the technical field of carriage painting, and specifically refers to a painting equipment for a semi-trailer carriage, including a conveyor rail, an angle adjustment mechanism is slidably connected inside the conveyor rail, a variable angle and variable pitch spraying mechanism is symmetrically fixed at the lower end of the angle adjustment mechanism, and a water curtain cabinet is arranged outside the variable angle and variable pitch spraying mechanism. The angle adjustment mechanism and the variable angle and variable pitch spraying mechanism of the present invention can adjust the corresponding spraying angle according to the aspect ratio of the carriage crossbeam and the longitudinal beam, so that the paint spraying angle is consistent with the paint spraying angle of each surface of the railing, improve the flatness and consistency of the paint spraying, reduce defects such as orange peel and fog paint, and then limit the sprayed paint to a certain area through the water curtain cabinets symmetrically arranged on both sides of the center, reduce the amount of paint mist escaping into the paint spraying room, and improve the environment in the working area.

Description

Technical Field

[0001] The invention belongs to the technical field of carriage painting, and specifically refers to a painting device for a grid-type semitrailer carriage. Background Art

[0002] The frame of the cargo box semi-trailer is welded together by longitudinal beams and integral through-type cross beams, which can balance the strength, rigidity and toughness of the frame and improve its carrying capacity.

[0003] When spraying the topcoat on a saddle-type semitrailer, the overall spraying method is usually adopted. The spray head is perpendicular to the surface of the car body and the paint is sprayed vertically on the car body. Due to the special structure of the saddle-type semitrailer, the effect of its spraying operation is somewhat different from that of traditional cars. Each crossbeam or longitudinal beam of the saddle-type semitrailer has two sets of mutually perpendicular surfaces. When the paint is sprayed perpendicular to one surface, it must be parallel to the other surface, resulting in the paint not being able to directly act on all surfaces.

[0004] The surface parallel to the paint spraying direction can only be atomized by the paint. This spraying method increases the atomization phenomenon in the paint spray room and increases the safety risk of combustion and explosion. At the same time, serious atomization will also affect the surface quality of the paint, forming orange peel and foggy paint phenomena, causing inconsistent paint film thickness, poor paint flatness and other quality problems. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a painting equipment for a slatted semi-trailer compartment, which at least partially solves the above problems.

[0006] The technical solution adopted by the present invention is as follows: A painting device for a semi-trailer compartment of a shed type proposed by the present invention comprises a conveying rail, wherein an angle adjustment mechanism is slidably connected inside the conveying rail, the conveying rail provides power to drive the angle adjustment mechanism to slide smoothly, and is configured to be driven to rotate to adjust the angle;

[0007] The lower end of the angle adjustment mechanism is symmetrically fixed with a variable angle and variable distance spraying mechanism, the variable angle and variable distance spraying mechanisms on both sides clamp the carriage railing in the middle and can spray paint on the railing from both sides, and the spraying angle of the variable angle and variable distance spraying mechanism can be adjusted by the angle adjustment mechanism so that the angle between the sprayed paint and each side of the railing is the same;

[0008] A water curtain cabinet is provided outside the variable angle and variable pitch spraying mechanism. The water curtain cabinets are arranged in pairs on both sides of the angle adjustment mechanism. The water curtain cabinets on both sides can collect and process the paint mist generated during painting, thereby reducing the impact of the paint mist in the paint spraying room.

[0009] The water curtain cabinet includes a cabinet body, a water pump and a fan. The cabinet body is hinged on the angle adjustment mechanism. The fan is arranged above the cabinet body. One side of the cabinet body close to the angle adjustment mechanism is an open arc groove. The fan continuously draws out the air in the arc groove to form a negative pressure environment in the arc groove.

[0010] The water pump is arranged on the cabinet, and spray holes are arranged in array on both side walls of the arc groove. The water pump transports water to the spray holes to spray the water into mist. The water mist combines with the paint mist in the air and falls to the bottom of the cabinet under the action of gravity and the suction of the fan, and is mixed with the liquid at the bottom of the cabinet, and then filtered by the filter screen inside the cabinet, so as to absorb and filter the paint mist, reduce the paint mist phenomenon in the working area of ​​the paint spraying room, and improve the working safety and working environment in the paint spraying area.

[0011] Furthermore, the angle adjustment mechanism includes a slide bar, the slide bar is arranged in the conveying rail, the slide bar moves with the conveying rail, a fixed plate is arranged in the middle of the slide bar, an angle adjustment rod is rotatably arranged at the bottom of the slide bar, and the angle-variable distance spraying mechanism is symmetrically arranged in the slots at both ends of the angle adjustment rod;

[0012] Furthermore, in order to adjust the angle between the variable angle and variable pitch spraying mechanism and the carriage railing, a motor is symmetrically arranged on the lower wall of the fixed plate, a swing rod is arranged on the output shaft of the motor, a waist hole is arranged on the swing rod, connecting rods are symmetrically arranged at both ends of the angle adjustment rod, the water curtain cabinet is hinged in the connecting rod, and the connecting rod is slidably arranged in the waist hole;

[0013] Furthermore, the fixed plate is symmetrically provided with arc grooves, the center of which coincides with the output shaft of the motor, and the connecting rod is slidably arranged in the arc groove. When the motor rotates, the rocker arm rotates with the motor, and the connecting rod slides along the waist hole while following the rocker arm to rotate around the motor shaft, so that the angle adjustment rod rotates around the sliding rod, thereby changing the angle of the variable angle and variable pitch spraying mechanism on the sliding rod.

[0014] Furthermore, the variable angle and variable distance spraying mechanism comprises a paint spraying pipe fixed on the angle adjustment mechanism, a plurality of flange nozzles are slidably provided on the paint spraying pipe, the flange nozzles are fixed on the paint spraying pipe by bolts and gaskets, and the flange nozzles can move up and down along the side wall of the paint spraying pipe to change the height between each flange nozzle and the distance between adjacent flange nozzles, so as to adapt to the crossbeams of different heights and spacings on the barge-type carriage;

[0015] Furthermore, a paint spray head is hinged on the flange nozzle. While the paint spray head rotates a certain angle with the paint spray tube, it can also adjust the angle independently relative to the flange nozzle, so that a certain angle is formed between the paint spray head and the railing (crossbeam or longitudinal beam). When the paint spray head only rotates with the paint spray tube, there is an angle between the paint spray head and the longitudinal beam. When the paint spray head rotates relative to the flange nozzle at the same time, the paint spray head forms an angle with the longitudinal beam while also forming a certain angle with the crossbeam. The above angle is determined by the length-to-width ratio of the railing (crossbeam or longitudinal beam). The paint sprayed by the paint spray head along this direction forms a paint spray line. The paint spray angle formed between the paint spray line and the two intersecting surfaces of the railing is the same, so that a paint film of uniform thickness is formed on each side of the railing to avoid fog paint and orange peel phenomenon.

[0016] Furthermore, a feed pipe is provided on the side of the paint spray pipe away from the paint spray head, a tensioning assembly is provided in the paint spray pipe, and the tensioning assembly is connected between the flange nozzle and the feed pipe. The paint enters from the feed pipe and is transported to the flange nozzle and the paint spray head through the tensioning assembly. In the process of adjusting the position of the flange nozzle, the tensioning assembly can ensure that no entanglement or blockage occurs when transporting the paint between the paint spray head and the feed pipe, thereby ensuring smooth transportation of the paint.

[0017] Furthermore, the tensioning assembly is arrayed in the paint spray pipe, and the tensioning assembly includes a tensioning rod, a tensioning shaft, a tensioning spring and a steel wire hose. The tensioning rod is slidably arranged in the paint spray pipe, the tensioning shaft is fixed in the paint spray pipe, the tensioning spring is connected between the tensioning rod and the paint spray pipe, and the steel wire hose is connected to the flange nozzle around the tensioning rod and the tensioning shaft; in order to avoid interference, the shape, position and direction of the tensioning rod and the tensioning spring in each group of tensioning assemblies can be differentiated according to the situation inside the paint spray pipe, and each group of tensioning rods and tensioning springs is not required to be exactly the same.

[0018] Furthermore, a slide groove 1 is arrayed on the outer wall of the paint spray pipe, and the flange nozzle is slidably arranged in the slide groove 1. The flange nozzle slides in the slide groove 1, thereby adjusting the height of the paint spray head on the flange nozzle or the distance between adjacent paint spray heads to adapt to beams with different distances.

[0019] Furthermore, a second slide groove is arrayed on the inner wall of the paint spray tube, and the tensioning rod is slidably arranged in the second slide groove. The tensioning spring drives the tensioning rod to slide up and down along the second slide groove, so that the steel wire hose remains tensioned.

[0020] Furthermore, the paint spray tube has an array of connecting holes on one side away from the slide chute, and the connecting holes are connected to the feed pipe. One end of the steel wire hose away from the paint spray head is arranged on the connecting hole to connect the paint spray head and the feed pipe.

[0021] The beneficial effects achieved by the present invention using the above structure are as follows:

[0022] 1. The angle adjustment mechanism and the variable angle and variable distance spraying mechanism can adjust the corresponding spraying angle according to the aspect ratio of the carriage crossbeam and longitudinal beam, so that the paint spraying angle is consistent with the spraying angle of each surface of the railing (i.e. crossbeam or longitudinal beam), improve the flatness and consistency of paint spraying, and reduce defects such as orange peel and fog paint;

[0023] 2. The water curtain cabinets symmetrically arranged on both sides can limit the sprayed paint to a certain area, reduce the amount of paint escaping into the paint spraying room, and improve the environment in the working area. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0025] Figure 2 for Figure 1 Explosion diagram of

[0026] Figure 3 It is a partial cross-sectional view of the angle adjustment mechanism;

[0027] Figure 4 It is a fracture view of the variable angle and variable pitch spraying mechanism;

[0028] Figure 5 A fracture view of a cross-sectional view of a variable angle and variable distance spraying mechanism;

[0029] Figure 6 It is a schematic diagram of the position structure of the tension rod, the tension spring and the wire hose;

[0030] Figure 7 A fracture view of a cross-sectional view of a paint spray tube;

[0031] Figure 8 Schematic diagram of the spray angle of paint and carriage railing.

[0032] Among them, 1. conveying rail, 2. angle adjustment mechanism, 3. variable angle and variable pitch spraying mechanism, 4. water curtain cabinet, 5. cabinet, 6. water pump, 7. fan, 8. spray hole, 9. slide rod, 10. fixed plate, 11. angle adjustment rod, 12. motor, 13. rocker arm, 14. waist hole, 15. connecting rod, 16. arc groove, 17. paint spray tube, 18. tensioning rod, 19. tensioning spring, 20. steel wire hose, 21. flange nozzle, 22. paint spray head, 23. tensioning shaft, 24. feed pipe, 25. slide chute 1, 26. slide chute 2, 27. connecting hole.

[0033] In the attached Figure 8 In the figure, A represents the railing of the carriage (i.e., the crossbeam or longitudinal beam), P represents the paint spraying line, and M represents the spraying angle between the paint and the railing.

[0034] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0037] like Figure 1 and Figure 2 As shown, a painting device for a semi-trailer compartment of a shed type proposed by the present invention comprises a conveying rail 1, in which an angle adjustment mechanism 2 is slidably connected, and the conveying rail 1 provides power to drive the angle adjustment mechanism 2 to slide smoothly;

[0038] The lower end of the angle adjustment mechanism 2 is symmetrically provided with a variable angle and variable pitch spraying mechanism 3. The variable angle and variable pitch spraying mechanisms 3 on both sides sandwich the carriage railing A in the middle and can spray paint on the railing A from both sides. The spraying angle of the variable angle and variable pitch spraying mechanism 3 can be adjusted by the angle adjustment mechanism 2 so that the angle between the sprayed paint and each side of the railing A is the same. The number of the variable angle and variable pitch spraying mechanisms 3 is an even number (2N, N is a natural number), which are arranged in pairs at both ends of the angle adjustment mechanism 2. Optionally, the number N is 1-100, preferably 1-5.

[0039] A water curtain cabinet 4 is provided outside the variable angle and variable pitch spraying mechanism 3. The water curtain cabinet 4 is arranged in pairs on both sides of the angle adjustment mechanism 2. The water curtain cabinets 4 on both sides can collect and process the paint mist generated during painting, thereby reducing the impact of the paint mist in the paint spraying room.

[0040] The water curtain cabinet 4 includes a cabinet 5, a water pump 6 and a fan 7. The cabinet 5 is hinged on the angle adjustment mechanism 2. The fan 7 is arranged above the cabinet 5. The side of the cabinet 5 close to the angle adjustment mechanism 2 is an open arc groove. The fan 7 continuously draws out the air in the arc groove to form a negative pressure environment in the arc groove.

[0041] The water pump 6 is arranged on the cabinet 5, and spray holes 8 are arranged in an array on the two side walls of the arc groove. The water pump 6 transports water to the spray holes 8 to spray the water into mist. The water mist combines with the paint mist in the air and falls to the bottom of the cabinet 5 under the action of gravity and the suction of the fan 7, and is mixed with the liquid at the bottom of the cabinet 5, and then filtered by the filter screen inside the cabinet 5 (not shown in the drawings), thereby absorbing and filtering the paint mist, reducing the paint mist phenomenon in the working area of ​​the paint spraying room, and improving the working safety and working environment in the paint spraying area.

[0042] like Figure 2 and Figure 3 As shown, the angle adjustment mechanism 2 includes a slide bar 9, which is arranged in the conveying rail 1. The slide bar 9 moves with the conveying rail 1. A fixed plate 10 is arranged in the middle of the slide bar 9. An angle adjustment rod 11 is rotatably arranged at the bottom of the slide bar 9. The angle-variable and distance-variable spraying mechanism 3 is symmetrically arranged in the slots at both ends of the angle adjustment rod 11.

[0043] In order to adjust the angle between the variable angle and variable pitch spraying mechanism 3 and the carriage railing A, a motor 12 is symmetrically provided on the lower wall of the fixed plate 10, a swing rod 13 is provided on the output shaft of the motor 12, a waist hole 14 is provided on the swing rod 13, connecting rods 15 are symmetrically provided at both ends of the angle adjustment rod 11, the water curtain cabinet 4 is hinged in the connecting rod 15, and the connecting rod 15 is slidably provided in the waist hole 14;

[0044] The fixed plate 10 is symmetrically provided with arc grooves 16, the center of the arc groove 16 coincides with the output shaft of the motor 12, and the connecting rod 15 is slidably arranged in the arc groove 16. When the motor 12 rotates, the rocker arm 13 rotates with the motor 12. While the connecting rod 15 rotates around the axis of the motor 12 following the rocker arm 13, it also slides along the waist hole 14 so that the angle adjustment rod 11 rotates around the slide rod 9, thereby changing the angle of the variable angle and variable pitch spraying mechanism 3 on the slide rod 9.

[0045] like Figure 4 As shown, the variable angle and variable pitch spraying mechanism 3 includes a paint spraying pipe 17 fixed on the angle adjustment mechanism 2, and a plurality of flange nozzles 21 are slidably provided on the paint spraying pipe 17. The flange nozzles 21 are fixed to the paint spraying pipe 17 by bolts and gaskets. The flange nozzles 21 can move up and down along the side wall of the paint spraying pipe 17 to change the height between each flange nozzle 21 and the distance between adjacent flange nozzles 21, so as to adapt to the crossbeams of different heights and spacings on the barge type carriage;

[0046] like Figure 6 and Figure 8As shown, a paint spray head 22 is hinged on the flange nozzle 21. The paint spray head 22 can follow the paint spray tube 17 to rotate at a certain angle and can also adjust the angle independently relative to the flange nozzle 21, so that a certain angle is formed between the paint spray head 22 and the railing A (crossbeam or longitudinal beam). When the paint spray head 22 only follows the rotation of the paint spray tube 17, there is an angle between the paint spray head 22 and the longitudinal beam. When the paint spray head 22 rotates relative to the flange nozzle 21 at the same time, the paint spray head 22 forms an angle with the longitudinal beam and also forms a certain angle with the cross beam. The above angle is determined by the length-width ratio of the railing A (crossbeam or longitudinal beam). The paint sprayed by the paint spray head 22 along this direction forms a paint spray line P. The paint spray line P is the same as the paint spray angle M formed between the two intersecting surfaces of the railing A, so that a paint film with uniform thickness is formed on each side of the railing A to avoid fog paint and orange peel phenomenon.

[0047] A feed pipe 24 is provided on one side of the paint spray pipe 17 away from the paint spray head 22. A tensioning assembly is provided inside the paint spray pipe 17. The tensioning assembly is connected between the flange nozzle 21 and the feed pipe 24. The paint enters from the feed pipe 24 and is transported to the flange nozzle 21 and the paint spray head 22 through the tensioning assembly. In the process of adjusting the position of the flange nozzle 21, the tensioning assembly can ensure that there is no entanglement or blockage when transporting the paint between the paint spray head 22 and the feed pipe 24, thereby ensuring smooth transportation of the paint.

[0048] like Figure 5-Figure 7 As shown, the tensioning assembly is arrayed in the paint spray pipe 17, and the tensioning assembly includes a tensioning rod 18, a tensioning shaft 23, a tensioning spring 19 and a steel wire hose 20. The tensioning rod 18 is slidably arranged in the paint spray pipe 17, the tensioning shaft 23 is fixed in the paint spray pipe 17, the tensioning spring 19 is connected between the tensioning rod 18 and the paint spray pipe 17, and the steel wire hose 20 is connected to the flange nozzle 21 around the tensioning rod 18 and the tensioning shaft 23; in order to avoid interference, the shape, position and direction of the tensioning rod 18 and the tensioning spring 19 in each group of tensioning assemblies can be differentiated according to the situation inside the paint spray pipe 17, and each group of tensioning rods 18 and tensioning springs 19 are not required to be exactly the same.

[0049] An array of slide grooves 25 are provided on the outer wall of the paint spray pipe 17, and the flange nozzle 21 is slidably arranged in the slide groove 25. The flange nozzle 21 slides in the slide groove 25, thereby adjusting the height of the paint spray head 22 on the flange nozzle 21 or the distance between adjacent paint spray heads 22 to adapt to beams with different distances.

[0050] A second slide groove 26 is arrayed on the inner wall of the paint spray tube 17, and the tensioning rod 18 is slidably arranged in the second slide groove 26. The tensioning spring 19 drives the tensioning rod 18 to slide up and down along the second slide groove 26, so that the steel wire hose 20 remains tensioned.

[0051] A connection hole 27 is arranged on one side of the paint spray tube 17 away from the slide groove 25 , and the connection hole 27 is connected to the feed pipe 24 . One end of the steel wire hose 20 away from the paint spray head 22 is arranged on the connection hole 27 , so that the paint spray head 22 and the feed pipe 24 are connected.

[0052] During the specific work, according to the height of the longitudinal beam on the slatted semi-trailer and the height and spacing of each cross beam, the position of the flange nozzle 21 and the paint spray head 22 are adjusted, the bolts and gaskets on the flange nozzle 21 are loosened, so that the flange nozzle 21 can slide up and down along the slide groove 25, and each flange nozzle 21 is slid to a suitable position and then the bolts and gaskets are tightened.

[0053] During the process of moving the flange nozzle 21, the flange nozzle 21 will drag one end of the steel wire hose 20 to move synchronously. When the end of the steel wire hose 20 slides, it will overcome the resistance of the tensioning spring 19 and drive the tensioning rod 18 to slide along the second slide groove 26. Under the action of the tensioning spring 19, the tensioning rod 18 always keeps the steel wire hose 20 taut to prevent the steel wire hose 20 from being entangled, folded, etc., so as to keep the internal pipeline of the steel wire hose 20 unobstructed.

[0054] After the adjustment is completed, each paint spray head 22 is evenly distributed in the height direction of the longitudinal beam, and a group of paint spray heads 22 are symmetrically placed outside the center of the two side walls of the beam, wherein the paint spray heads 22 on one side are located at the upper end of the side wall of the beam, and the paint spray heads 22 on the other side are located at the lower end of the side wall of the beam.

[0055] After positioning of each spray head 22 is completed, the angle of the spray head 22 relative to the railing A (i.e., the crossbeam and the longitudinal beam) needs to be adjusted so that the paint spray line P and the spray angle M formed by the side walls of the railing A are the same, ensuring that the paint film thickness of the side walls of the railing A is uniform and there is no fogging.

[0056] First, adjust the spraying angle of the paint spray head 22 relative to the longitudinal beam, determine the angle at which the paint spray tube 17 needs to rotate according to the aspect ratio of the longitudinal beam cross section, and then start the motor 12. The motor 12 drives the rocker arm 13 to rotate, and the rocker arm 13 drives the connecting rod 15 to slide along the arc groove 16 through the waist hole 14. When the connecting rod 15 rotates, the connecting rod 15 drives the angle adjustment rod 11 to rotate around the lower end of the sliding rod 9. When the angle adjustment rod 11 rotates, the paint spray tubes 17 at both ends of the angle adjustment rod 11 synchronously follow and rotate a certain angle, and the paint spray tubes 17 on both sides clamp the railing A in the middle.

[0057] When the paint spraying tube 17 rotates, the paint spraying head 22 on the paint spraying tube 17 rotates with the same angle. At this time, the paint spraying line P formed by the paint spraying head 22 is the same as the paint spraying angle M formed by the side walls of the longitudinal beam, and the spraying angle adjustment of the longitudinal beam is completed.

[0058] Then adjust the angle of the paint spray heads 22 on both sides of the beam. Just rotate the paint spray heads 22 so that they rotate relative to the flange nozzle 21. The rotation angle is determined by the aspect ratio of the cross section of the beam. The paint spray heads 22 at the upper end of the side wall of the beam are tilted downward, and the paint spray heads 22 at the lower end of the side wall of the beam are tilted upward. The paint spray line P formed by the paint sprayed by the paint spray heads 22 on both sides is the same as the paint spray angle M formed by the side walls of the beam. The spray angle adjustment of the beam is completed.

[0059] After the preparation work is completed, the paint is transported to the feed pipe 24, and the paint is sprayed out from the paint spray head 22 through the steel wire hose 20 and the flange nozzle 21, and evenly covers the sides of the railing A. During the spraying process, the conveying rail 1 drives the slide bar 9 to move at a constant speed to make the paint spraying speed constant.

[0060] During the spraying operation, the water curtain cabinet 4 is also started synchronously, the fan 7 absorbs the paint mist generated during the spraying operation into the arc groove, the water pump 6 sprays the liquid from the spray hole 8, the water mist will be absorbed on the paint mist, and fall to the bottom of the cabinet 5 under the action of negative pressure and gravity, and be recovered and filtered.

[0061] After the spraying operation is completed, the filter screen used for filtering in the water curtain cabinet 4 is taken out and cleaned, and the next operation can be carried out.

[0062] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0063] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

[0064] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A paint spraying device for a semi-trailer compartment, characterized in that: include: Conveyor rail (1); An angle adjustment mechanism (2) for adjusting the spraying angle, slidably connected to the conveying rail (1) and configured to be driven to rotate to adjust the angle; An even number of variable angle and variable pitch spraying mechanisms (3) are symmetrically fixedly arranged at the lower end of the angle adjustment mechanism (2), the variable angle and variable pitch spraying mechanism (3) comprising a paint spraying tube (17) fixed on the angle adjustment mechanism (2), a plurality of groups of flange nozzles (21) being slidably arranged on the paint spraying tube (17), the flange nozzles (21) being fixed on the paint spraying tube (17) by bolts and gaskets, the flange nozzles (21) being able to move up and down along the side wall of the paint spraying tube (17) to change the height between each flange nozzle (21) and the distance between adjacent flange nozzles (21), the flange nozzles (21) being hingedly connected to a paint spraying head (22), the paint spraying head (22) being arranged to move along the side wall of the paint spraying tube (17) When the paint spray pipe (17) is rotated, the angle can also be adjusted independently relative to the flange spray pipe (21). A tensioning assembly is provided in the paint spray pipe (17); the tensioning assembly is arranged in the paint spray pipe (17), and the tensioning assembly comprises a tensioning rod (18), a tensioning shaft (23), a tensioning spring (19) and a steel wire hose (20); the tensioning rod (18) is slidably arranged in the paint spray pipe (17), the tensioning shaft (23) is fixed in the paint spray pipe (17), the tensioning spring (19) is connected between the tensioning rod (18) and the paint spray pipe (17), and the steel wire hose (20) is connected to the flange spray pipe (21) around the tensioning rod (18) and the tensioning shaft (23); and A water curtain cabinet (4) is arranged outside the variable angle and variable pitch spraying mechanism (3) and is used to process paint mist generated during spraying; The angle adjustment mechanism (2) comprises a slide bar (9), the slide bar (9) is arranged in the conveying rail (1), a fixing plate (10) is arranged in the middle of the slide bar (9), an angle adjustment rod (11) is rotatably arranged at the bottom of the slide bar (9), and the variable angle and variable pitch spraying mechanism (3) is symmetrically arranged in the slots at both ends of the angle adjustment rod (11); A motor (12) is symmetrically arranged on the lower wall of the fixed plate (10), a swing rod (13) is arranged on the output shaft of the motor (12), a waist hole (14) is arranged on the swing rod (13), connecting rods (15) are symmetrically arranged at both ends of the angle adjustment rod (11), the connecting rods (15) are slidably arranged in the waist holes (14), and circular arc grooves (16) are symmetrically arranged on the fixed plate (10), the connecting rods (15) are slidably arranged in the circular arc grooves (16).

2. The paint spraying equipment for a sluice type semitrailer according to claim 1, characterized in that: A feed pipe (24) is provided on the side of the paint spray pipe (17) away from the paint spray head (22), and the tensioning assembly is connected between the flange spray pipe (21) and the feed pipe (24).

3. The paint spraying equipment for a sluice type semitrailer according to claim 1, characterized in that: A slide groove (25) is arranged in an array on the outer side wall of the paint spraying tube (17), and the flange spraying tube (21) is slidably arranged in the slide groove (25).

4. The paint spraying equipment for a sluice type semitrailer according to claim 1, characterized in that: A second slide groove (26) is arranged in an array on the inner side wall of the paint spraying tube (17), and the tensioning rod (18) is slidably arranged in the second slide groove (26).

5. The paint spraying equipment for a sluice type semitrailer according to claim 4, characterized in that: A connection hole (27) is arranged in an array on one side of the paint spraying tube (17) away from the slide groove (25), and the connection hole (27) is communicated with the feed tube (24). One end of the steel wire hose (20) away from the paint spraying head (22) is arranged on the connection hole (27).

6. The paint spraying equipment for a sluice type semitrailer according to claim 5, characterized in that: The water curtain cabinets (4) are arranged in pairs on both sides of the angle adjustment mechanism (2), and the water curtain cabinets (4) are hinged in the connecting rod (15).

7. The paint spraying equipment for a sluice type semitrailer according to claim 6, characterized in that: The water curtain cabinet (4) comprises a cabinet body (5), a water pump (6) and a fan (7); the cabinet body (5) is hinged on the angle adjustment mechanism (2); the fan (7) is arranged above the cabinet body (5); a side of the cabinet body (5) close to the angle adjustment mechanism (2) is an open arc-shaped groove; the water pump (6) is arranged on the cabinet body (5); spray holes (8) are arranged in an array on both side walls of the arc-shaped groove; the water pump (6) transports water to the spray holes (8).

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