A spraying device for the rear column of a forklift truck frame

Abstract

The present invention relates to the technical field of spraying equipment, specifically a spraying equipment for the rear column of a forklift frame. It can achieve a pipeline operation mode, with good coordination among various parts, further enhanced automation degree, further improved operation efficiency, and further improved practicability. It includes a rear column body of the frame, a clamping system, and an operation system. The clamping system includes a main frame, on which a rotating shell is rotatably connected. A servo motor is installed in the main frame, and the servo motor is used to drive the rotation of the rotating shell relative to the main frame. A plurality of stepped operation ports are opened on the rotating shell, and an operation cavity is opened inside the rotating shell. A plurality of partition chambers are fixedly connected inside the operation cavity, and lifting base frames are arranged in the plurality of partition chambers. The tops of the plurality of lifting base frames are fixedly connected with top frames, and sliding frames are slidably connected inside the plurality of top frames. The plurality of sliding frames are fixedly connected with elastic springs, and the plurality of elastic springs are respectively fixedly connected with the plurality of top frames.

Description

Technical Field

[0001] The present invention relates to the technical field of spraying equipment, and more specifically, to a spraying equipment for the rear column of a forklift truck frame. Background Art

[0002] As is well known, the spraying equipment for the rear column of a forklift truck frame is an auxiliary device used for spraying operations on the rear column of a forklift truck frame.

[0003] After retrieval, a patent with the Chinese patent application number CN202320068279.1 discloses a spraying equipment for the rear column of a forklift truck frame. It is generally described as including a positioning mechanism, and a spraying mechanism is arranged above the positioning mechanism. The positioning mechanism includes a spraying support, an electric telescopic rod, and a rear column body of the forklift truck frame. A guiding slider is arranged on one side of the electric telescopic rod, a first outer ring is arranged on one side of the guiding slider, a first inner ring is arranged on one side of the first outer ring, and an L-shaped connecting rod is arranged on the front side of the first inner ring. The spraying support includes a spraying support body, and two ends on the upper side of the spraying support body are respectively provided with a first side arm and a second side arm. A second outer ring is arranged on the upper side of the spraying support body near one side of the first side arm, a second inner ring is arranged on one side of the second outer ring, and an L-shaped connecting sleeve is arranged on the front side of the second inner ring. A limiting frame is arranged on the upper side of the spraying support body near one side of the second side arm, and a guiding rod is arranged on one side of the limiting frame. When in use, one end of the rear column body of the forklift truck frame is abutted against the second inner ring, the electric telescopic rod is opened to drive the guiding slider to drive the first outer ring to move. When the first outer ring moves, the first inner ring abuts against the other end of the rear column body of the forklift truck frame, so that the position of the rear column body of the forklift truck frame is fixed. When the first inner ring moves, the L-shaped connecting rod can be inserted into the inner side of the L-shaped connecting sleeve. After the spraying head moves to spray the rear column body of the forklift truck frame, the L-shaped connecting sleeve and the L-shaped connecting rod are rotated, so that the second inner ring and the first inner ring rotate. The rotation of the second inner ring and the first inner ring causes the rear column body of the forklift truck frame to rotate and turn over by a certain degree, and then the spraying head is moved to further spray the reverse side of the rear column body of the forklift truck frame, which facilitates the staff to turn over the rear column body of the forklift truck frame, improves the work efficiency of the staff, can play a positioning role for the electric telescopic rod through the limiting frame, can play a guiding role through the movement of the guiding slider on the guiding rod, and can play a role of fixing and supporting a group of guiding frames through the first side arm and the second side arm. The spraying head and the spraying machine are connected to each other, and the limiting slider is moved to move along a group of guiding frames. The movement of the limiting slider can cause the spraying head to move accordingly, thus facilitating the staff to spray the rear column body of the forklift truck frame.

[0004] Although the above-mentioned prior art solution can achieve the painting operation of the rear column body of the forklift truck frame, the rotation adjustment of the rear column body of the forklift truck frame needs to be assisted manually, the degree of automation of covering painting needs to be further enhanced, the operation efficiency needs to be further improved, and the practicability needs to be further improved. Summary of the Invention

[0005] In view of the problems in the prior art, the present invention provides a spraying device for the rear column of a forklift truck frame, which can realize a pipeline operation mode, has good coordination among various parts, further enhances the degree of automation, further improves the operation efficiency, and further improves the practicability.

[0006] The technical solution adopted by the present invention to solve its technical problems is as follows: A spraying device for the rear column of a forklift truck frame includes a rear column body of the frame, a clamping system and an operation system. The clamping system includes a main frame, a rotating shell is rotatably connected to the main frame, a servo motor is installed in the main frame, and the servo motor is used for driving the rotation of the rotating shell relative to the main frame. A plurality of stepped operation ports are provided on the rotating shell, an operation cavity is provided in the rotating shell, a plurality of partition chambers are fixedly connected in the operation cavity, a lifting base frame is provided in each of the plurality of partition chambers, a top frame is fixedly connected to the top end of each of the plurality of lifting base frames, a sliding frame is slidably connected in each of the plurality of top frames, a plurality of elastic springs are fixedly connected to each of the plurality of sliding frames, the plurality of elastic springs are respectively fixedly connected to the plurality of top frames, a lifting limit component is installed in each of the plurality of sliding frames, a gear frame is rotatably connected to the bottom end of each of the plurality of sliding frames, and the plurality of gear frames respectively match the plurality of lifting limit components. An internal gear ring is provided in the operation cavity, and the plurality of gear frames are all meshed with the internal gear ring. A bottom frame is fixedly connected to the bottom end of each of the plurality of lifting base frames, a bottom positioning disk is rotatably connected in each of the plurality of bottom frames. The operation system includes a central cylinder frame, the internal gear ring is fixedly connected to the central cylinder frame through a plurality of umbrella support rods, the central cylinder frame is fixedly connected to the main frame, two installation ports are provided on the central cylinder frame, a gas guide shell and a spraying shell are respectively installed in the two installation ports, a plurality of air jet ports are provided on the gas guide shell, a plurality of nozzles are provided on the spraying shell, a plurality of air guiding ports are provided for each of the plurality of nozzles, and the plurality of air guiding ports are arranged in a downwardly inclined manner that gradually decreases from inside to outside of the spraying shell. The plurality of air guiding ports are all provided on the spraying shell, and a pipeline system is provided in the central cylinder frame, and the pipeline system is used for guiding, transporting and supplying corresponding substances to the air jet ports, the nozzles and the air guiding ports.

[0007] Specifically, each of the plurality of lifting limit components includes a lifting rod, the plurality of lifting rods are respectively slidably connected in the plurality of sliding frames, a rotating rod is rotatably connected to the bottom end of each of the plurality of lifting rods, a top positioning disk is fixedly connected to the bottom end of each of the plurality of rotating rods, the plurality of gear frames are respectively rotatably connected to the bottom ends of the plurality of sliding frames, a sliding port is provided on each of the plurality of gear frames, the plurality of rotating rods are respectively in sliding fit with the plurality of sliding ports, a guiding port is provided on each of the plurality of lifting rods, a pulling spring is fixedly connected in each of the plurality of guiding ports, and the plurality of pulling springs are respectively fixedly connected to the plurality of sliding frames.

[0008] Specifically, three opening grooves are formed at the bottom end of the main body frame. A through opening is formed in the three opening grooves. A middle cylinder frame is rotatably connected in the through opening. The middle cylinder frame is fixedly connected to the rotating housing. A bevel gear ring is fixedly connected to the bottom end of the middle cylinder frame. The bevel gear ring meshes with a driving gear ring. The driving gear ring is connected to the output shaft of the servo motor.

[0009] Specifically, a fixed cylinder frame is fixedly connected to the bottom end of the central cylinder frame. The fixed cylinder frame is in rotational cooperation with the middle cylinder frame. A support plate is fixedly connected to the bottom end of the fixed cylinder frame. The support plate is fixedly connected in the three opening grooves. Two side openings are formed in the fixed cylinder frame.

[0010] Specifically, the pipeline system includes a hot air guiding pipe, a paint guiding pipe, and a compressed air guiding pipe. The hot air guiding pipe, the paint guiding pipe, and the compressed air guiding pipe all enter the middle cylinder frame through the corresponding side openings from the three opening grooves. A plurality of jet openings are all communicated with the hot air guiding pipe. A plurality of nozzles are all communicated with the paint guiding pipe. A plurality of air guiding openings are all communicated with the compressed air guiding pipe.

[0011] Specifically, single brackets and double brackets are fixedly connected in both the three opening grooves and the middle cylinder frame. The single brackets are used for auxiliary support positioning of the hot air guiding pipe. The double brackets are used for auxiliary support positioning of the paint guiding pipe and the compressed air guiding pipe.

[0012] Specifically, a double concave middle support block is arranged inside the double bracket. The double concave middle support block is arranged between the paint guiding pipe and the compressed air guiding pipe.

[0013] Specifically, a hand-held ring is fixedly connected to each of the plurality of sliding frames. An auxiliary lifting bent tube is fixedly connected to each of the plurality of lifting rods. Each of the auxiliary lifting bent tubes is slidably connected with a sliding bent rod. A through opening is formed in each of the plurality of top frames. The plurality of sliding bent rods are respectively slidably connected with the plurality of through openings. The plurality of sliding bent rods are respectively in sliding cooperation with the plurality of lifting base frames. A cross bar is fixedly connected to the bottom end of each of the plurality of sliding bent rods.

[0014] Specifically, a plurality of force application hand grooves are formed in each of the plurality of lifting base frames. The hot air guiding pipe, the paint guiding pipe, and the compressed air guiding pipe are all communicated with quick connecting pipes.

[0015] Specifically, a limiting and protective frame is fixedly connected to the main body frame, an outer annular pool box is fixedly connected to the top end of the main body frame, the rotating housing is fixedly connected with an inner annular pool box, inclined vertical holes are provided on each of the plurality of bottom frames, a plurality of inclined through holes that are all communicated with the inner annular pool box are provided on the inner bottom wall of the rotating housing, the plurality of inclined through holes are respectively communicated with the plurality of inclined vertical holes, the plurality of bottom positioning disks are all made of water-permeable materials, the inner annular pool box is communicated with the outer annular pool box, a rotating seal is arranged between the inner annular pool box and the outer annular pool box, and an outer drainage pipe is linked to the bottom end of the outer annular pool box.

[0016] The beneficial effects of the present invention are as follows:

[0017] (1) For the forklift truck frame rear column spraying device of the present invention, through the design of the clamping system, an installation space matching the frame rear column body is formed. While realizing the placement and positioning storage of the frame rear column body, a relatively independent operation space can be formed in cooperation with the placed frame rear column body, so as to facilitate subsequent spraying operations. And a pipeline operation mode can be realized, with good coordination among various parts, further improving the automation degree and further enhancing the operation efficiency.

[0018] (2) For the forklift truck frame rear column spraying device of the present invention, through the design of the operation system, a spraying and drying function system matching the frame rear column body is formed, and the sequential spraying and drying of the frame rear column body can be realized, further improving the practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the drawings and embodiments.

[0020] Figure 1 is a three-dimensional structural schematic diagram of the whole of the present invention;

[0021] Figure 2 For the present invention Figure 1 is a partial enlarged structural schematic diagram at A in;

[0022] Figure 3 is a three-dimensional structural schematic diagram of a partial section of the present invention;

[0023] Figure 4 For the present invention Figure 3 is a partial enlarged structural schematic diagram at B in;

[0024] Figure 5 For the present invention Figure 3 is a partial enlarged structural schematic diagram at C in;

[0025] Figure 6 is a three-dimensional structural schematic diagram of a partial section of the cooperation of the rotating housing, the partition chamber and the internal gear ring, etc. of the present invention;

[0026] Figure 7 A perspective view of a partial cross-section of the present invention showing the cooperation of the rear column body, main frame, and central cylinder frame, etc.

[0027] Figure 8 The present invention Figure 7 A schematic diagram of the enlarged structure of the local part at D in the present invention;

[0028] Figure 9 The present invention Figure 7 A schematic diagram of the enlarged structure of the local part at E in the present invention;

[0029] Figure 10 A perspective view of the exploded structure of the present invention showing the cooperation of the lifting base frame, top frame, and sliding frame, etc.

[0030] Figure 11 A perspective view of the exploded structure of the present invention showing the cooperation of the central cylinder frame, air guide shell, and spraying shell, etc.

[0031] Figure 12 A perspective view of the overall bottom view of the present invention;

[0032] Figure 13 The present invention Figure 12 A schematic diagram of the enlarged structure of the local part at F in the present invention;

[0033] Figure 14 A perspective view of the exploded bottom view of the present invention showing the cooperation of the top frame, sliding frame, and elastic spring, etc.

[0034] Figure 15 A perspective view of the bottom view of the present invention showing the cooperation of the air guide shell, spraying shell, and hot air guiding pipe, etc.

[0035] Figure 16 A perspective view of the bottom view of the present invention showing the cooperation of the lifting rod, rotating rod, and tension spring.

[0036] In the figure: 1. Rear column body of the vehicle frame; 2. Main frame; 3. Rotating housing; 4. Servo motor; 5. Step operation opening; 6. Partition chamber; 7. Lifting base frame; 8. Top frame; 9. Sliding frame; 10. Elastic spring; 11. Gear frame; 12. Internal gear ring; 13. Bottom frame; 14. Bottom positioning disc; 15. Central tube frame; 16. Air guide housing; 17. Spraying housing; 18. Jet opening; 19. Nozzle; 20. Lifting rod; 21. Rotating rod; 22. Top positioning disc; 23. Sliding opening; 24. Pulling spring; 25. Guide opening; 26. Three-opening groove; 27. Central through opening; 28. Middle tube frame; 29. Bevel gear ring; 30. Driving gear ring; 31. Fixed tube frame; 32. Support plate; 33. Side opening; 34. Hot air guide pipe; 35. Paint guide pipe; 36. Compressed air guide pipe; 37. Single support; 38. Double support; 39. Double concave middle support block; 40. Hand ring; 41. Auxiliary lifting bent tube; 42. Sliding bent rod; 43. Cross bar; 44. Force application hand groove; 45. Quick connection pipe; 46. Limit protection frame; 47. Outer annular pool box; 48. Inner annular pool box; 49. Outer drainage pipe. Detailed implementation mode

[0037] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation modes. Embodiment

[0038] Please refer to Figures 1-16, a forklift truck frame rear column spraying device, comprising a forklift truck frame rear column body 1, a clamping system and an operating system. The clamping system includes a main body frame 2, a rotating housing 3 is rotatably connected to the main body frame 2, a servo motor 4 is installed inside the main body frame 2, a triple-opening groove 26 is formed at the bottom end of the main body frame 2, a through port 27 is formed inside the triple-opening groove 26, a middle cylinder frame 28 is rotatably connected inside the through port 27, the middle cylinder frame 28 is fixedly connected to the rotating housing 3, a bevel gear ring 29 is fixedly connected to the bottom end of the middle cylinder frame 28, the bevel gear ring 29 meshes with a driving gear ring 30, the driving gear ring 30 is connected to the output shaft of the servo motor 4, and the servo motor 4 is used for driving the rotation of the rotating housing 3 relative to the main body frame 2. A plurality of stepped working ports 5 are formed on the rotating housing 3, a working cavity is formed inside the rotating housing 3, a plurality of partition chambers 6 are fixedly connected inside the working cavity, a lifting base frame 7 is arranged inside each of the plurality of partition chambers 6, a top frame 8 is fixedly connected to the top end of each of the plurality of lifting base frames 7, a sliding frame 9 is slidably connected inside each of the plurality of top frames 8, a plurality of elastic springs 10 are fixedly connected to the plurality of sliding frames 9, the plurality of elastic springs 10 are respectively fixedly connected to the plurality of top frames 8, a lifting limiting component is installed inside each of the plurality of sliding frames 9, a gear frame 11 is rotatably connected to the bottom end of each of the plurality of sliding frames 9, the plurality of gear frames 11 respectively match with the plurality of lifting limiting components, the plurality of lifting limiting components each include a lifting rod 20, the plurality of lifting rods 20 are respectively slidably connected inside the plurality of sliding frames 9, a rotating rod 21 is rotatably connected to the bottom end of each of the plurality of lifting rods 20, a top positioning disc 22 is fixedly connected to the bottom end of each of the plurality of rotating rods 21, the plurality of gear frames 11 are respectively rotatably connected to the bottom end of the plurality of sliding frames 9, a sliding port 23 is formed on each of the plurality of gear frames 11, the plurality of rotating rods 21 respectively form a sliding fit with the plurality of sliding ports 23, a guiding port 25 is formed on each of the plurality of lifting rods 20, a tension spring 24 is fixedly connected inside each of the plurality of guiding ports 25, the plurality of tension springs 24 are respectively fixedly connected to the plurality of sliding frames 9, an internal gear ring 12 is arranged inside the working cavity, the plurality of gear frames 11 all mesh with the internal gear ring 12, a bottom frame 13 is fixedly connected to the bottom end of each of the plurality of lifting base frames 7, a bottom positioning disc 14 is rotatably connected inside each of the plurality of bottom frames 13. Through the design of the clamping system, a placement space matching the forklift truck frame rear column body 1 is formed. While realizing the placement, positioning and storage of the forklift truck frame rear column body 1, a relatively independent working space can be formed in supporting with the placed forklift truck frame rear column body 1, so as to facilitate subsequent spraying operations, and a pipeline-type operation mode can be realized. The coordination among various parts is good, the automation degree is further improved, and the operation efficiency is also further enhanced.

[0039] It should be further noted that a handle ring 40 is fixedly connected to each of the plurality of sliding frames 9, which is convenient for applying force to adjust the relative position of the sliding frame 9 relative to the top frame 8 within the top frame 8. A secondary lifting bent tube 41 is fixedly connected to each of the plurality of lifting rods 20. A sliding bent rod 42 is slidably connected to each of the plurality of secondary lifting bent tubes 41. A through hole is formed in each of the plurality of top frames 8, and each of the plurality of sliding bent rods 42 is slidably connected to each of the through holes. Each of the plurality of sliding bent rods 42 is slidably engaged with each of the plurality of lifting base frames 7. A cross bar 43 is fixedly connected to the bottom end of each of the plurality of sliding bent rods 42. By pushing the cross bar 43 upward relative to the lifting base frame 7, the lifting rod 20 can be raised relative to the sliding frame 9. A plurality of force application hand grooves 44 are formed in each of the plurality of lifting base frames 7, which is convenient for lifting the lifting base frame 7 relative to the rotating housing 3. The hot air guiding pipe 34, the paint guiding pipe 35, and the compressed air guiding pipe 36 are all connected to a quick connection pipe 45, which is convenient for connecting the hot air guiding pipe 34, the paint guiding pipe 35, and the compressed air guiding pipe 36 to external supply equipment. A limit protection frame 46 is fixedly connected to the main body frame 2. An outer annular pool box 47 is fixedly connected to the top end of the main body frame 2. The rotating housing 3 is fixedly connected to an inner annular pool box 48. An inclined vertical hole is provided on each of the plurality of bottom frames 13. A plurality of inclined through holes that are all connected to the inner annular pool box 48 are provided on the inner bottom wall of the rotating housing 3. Each of the plurality of inclined through holes is connected to each of the inclined vertical holes. Each of the plurality of bottom positioning disks 14 is made of a water-permeable material. The inner annular pool box 48 is connected to the outer annular pool box 47. A rotating seal is provided between the inner annular pool box 48 and the outer annular pool box 47. An outer drainage pipe 49 is linked to the bottom end of the outer annular pool box 47. When the sequential spraying operation of the vehicle frame rear column body 1 is carried out, when paint accumulates on the bottom positioning disk 14, it can be discharged externally, avoiding the accumulation of paint on the positioning disk and affecting the normal spraying operation of the vehicle frame rear column body 1.

[0040] It should be further noted that the operating system includes a central barrel frame 15. The internal gear ring 12 is fixedly connected to the central barrel frame 15 through a plurality of umbrella struts. The central barrel frame 15 is fixedly connected to the main body frame 2. Two mounting ports are provided on the central barrel frame 15. An air guide shell 16 and a spraying shell 17 are respectively installed in the two mounting ports. A plurality of air jet ports 18 are provided on the air guide shell 16. A plurality of nozzles 19 are provided on the spraying shell 17. A plurality of nozzles 19 are all equipped with air intake ports. The plurality of air intake ports are arranged in a downwardly inclined manner that gradually decreases from the inside to the outside of the spraying shell 17. The plurality of air intake ports are all provided on the spraying shell 17. A pipeline system is arranged inside the central barrel frame 15. The pipeline system includes a hot air guide pipe 34, a paint guide pipe 35, and a compressed air guide pipe 36. The hot air guide pipe 34, the paint guide pipe 35, and the compressed air guide pipe 36 all enter the middle barrel frame 28 through the corresponding side ports 33 from the three-opening groove 26. A plurality of air jet ports 18 are all communicated with the hot air guide pipe 34. A plurality of nozzles 19 are all communicated with the paint guide pipe 35. A plurality of air intake ports are all communicated with the compressed air guide pipe 36. The pipeline system is used for guiding, transporting, and supplying the corresponding substances of the air jet ports 18, the nozzles 19, and the air intake ports. Through the design of the operating system, a spraying and drying function system matching the rear column body 1 of the vehicle frame is formed, and the sequential spraying and drying of the rear column body 1 of the vehicle frame can be realized, and the practicability is further improved. A fixed barrel frame 31 is fixedly connected to the bottom end of the central barrel frame 15. The fixed barrel frame 31 is rotationally matched with the middle barrel frame 28. A support plate 32 is fixedly connected to the bottom end of the fixed barrel frame 31. The support plate 32 is fixedly connected in the three-opening groove 26. Two side ports 33 are provided on the fixed barrel frame 31. A single support 37 and a double support 38 are fixedly connected in the three-opening groove 26 and the middle barrel frame 28. The single support 37 is used for the auxiliary support and positioning of the hot air guide pipe 34. The double support 38 is used for the auxiliary support and positioning of the paint guide pipe 35 and the compressed air guide pipe 36. A double concave middle support block 39 is arranged inside the double support 38. The double concave middle support block 39 is arranged between the paint guide pipe 35 and the compressed air guide pipe 36, forming a relative support and positioning between the paint guide pipe 35 and the compressed air guide pipe 36, and reducing the occurrence of mutual collision and interference between the paint guide pipe 35 and the compressed air guide pipe 36.

[0041] The servo motor 4 in this embodiment is a conventional device well-known to those skilled in the art purchased on the market. It is necessary to select or customize the corresponding model according to actual needs. In this patent, we only use it and do not improve its structure and function. Its setting method, installation method, and electrical connection method can be debugged and operated by those skilled in the art as long as they follow the requirements of its user manual, and will not be elaborated here.

[0042] In summary, the working process of the forklift truck frame rear column spraying equipment is as follows. When in use, first place the forklift truck frame rear column spraying equipment at the location where it is required, and connect the control circuit of the servo motor 4 according to its supporting instruction manual. Then, through three quick connectors 45, the hot air guiding pipe 34, the paint guiding pipe 35, and the compressed air guiding pipe 36 are respectively connected to the external hot air supply equipment, paint supply equipment, and compressed air supply equipment to form a connection, so that the jet nozzle 18 can eject dry hot air, the spray head 19 can eject atomized paint, and the air guiding port can eject clean compressed air. During the actual operation process, first start the servo motor 4. The servo motor 4 works to achieve the slow rotation drive of the rotating housing 3 relative to the main frame 2. When multiple stepped working ports 5 on the rotating housing 3 sequentially pass by the limit protection frame 46, the top frame 8 in the stepped working port 5 rotated into the limit protection frame 46 is lifted. The process of lifting the top frame 8 is as follows: the operator first holds the handle ring 40 and pulls the sliding frame 9 relative to the top frame 8 in the direction close to the limit protection frame 46, so that the relative meshing effect between the gear frame 11 connected to the sliding frame 9 and the internal gear ring 12 fails. Then, keep this failure state, and lift the overall structure formed by the lifting base frame 7, the top frame 8, and the bottom frame 13 through the handle ring 40. During the lifting process, as the lifting base frame 7 gradually rises, when it is no longer convenient to lift by the handle ring 40, the height adjustment of the lifting base frame 7 can be assisted by the force application hand groove 44 on the lifting base frame 7. When the lifting base frame 7 rises to an appropriate height, place the frame rear column body 1 that needs to be painted in the area between the bottom positioning disk 14 and the top positioning disk 22 in the lifting base frame 7.

[0043] Furthermore, to facilitate the centering and alignment of the rear column body 1 of the vehicle frame relative to the bottom positioning disc 14, the top end of the bottom positioning disc 14 is a recessed conical groove structure. Before the rear column body 1 of the vehicle frame is placed between the bottom positioning disc 14 and the top positioning disc 22, the cross bar 43 needs to be pushed upward relative to the lifting base frame 7. Under the driving action of the auxiliary lifting bent tube 41 and the sliding bent rod 42, the height of the lifting rod 20 relative to the sliding frame 9 is increased, promoting the height increase of the rotating rod 21 and the top positioning disc 22, that is, increasing the relative height between the top positioning disc 22 and the bottom positioning disc 14 to facilitate the placement of the rear column body 1 of the vehicle frame. After the placement is completed, the cross bar 43 pushed relative to the lifting base frame 7 is released. Under the action of the tension spring 24, the relative height of the top positioning disc 22 relative to the bottom positioning disc 14 is reduced. In this way, the rear column body 1 of the vehicle frame placed between the top positioning disc 22 and the bottom positioning disc 14 can be limited. Then, the lifting base frame 7 is controlled to drop relative to the stepped operation port 5 until the gear rack 11 and the internal gear ring 12 are about to re - form a relative meshing action. When the gear rack 11 and the internal gear ring 12 are about to re - form a relative meshing, the sliding frame 9 still needs to be pulled close relative to the limit protection frame 46 to move the gear rack 11 away from the internal gear ring 12. After that, when the gear rack 11 and the internal gear ring 12 enter the same meshing height, the pushing of the sliding frame 9 is released. Under the action of the elastic spring 10, the gear rack 11 can be moved close to the internal gear ring 12, and then the relative meshing effect takes effect, thus completing the installation of a single rear column body 1 of the vehicle frame into the partition chamber 6. Along with the operation of the servo motor 4, the rotating housing 3 moves slowly, and the above - mentioned operation steps are sequentially repeated to sequentially load multiple rear column bodies 1 of the vehicle frame into the rotating housing 3. Since the movement of the rotating housing 3 is relatively slow, it does not affect the loading operation of the rear column body 1 of the vehicle frame.

[0044] Furthermore, the rear column body 1 of the vehicle frame loaded into the rotating housing 3 will form a rotational drive under the relative meshing action between the internal gear ring 12 and the gear holder 11. In this way, multiple rear column bodies 1 of the vehicle frame can rotate synchronously relative to the rotating housing 3 and also rotate self - rotatably within the rotating housing 3. Strip through - openings are provided on the joint surfaces of multiple partition chambers 6 and the central cylinder frame 15. When the strip through - opening coincides with the air jet opening 18, dry air will enter the partition chamber 6 to dry the rear column body 1 of the vehicle frame within the partition chamber 6. When the strip through - opening coincides with the nozzle 19, the atomized paint will enter the partition chamber 6 to perform a spraying operation on the rear column body 1 of the vehicle frame within the partition chamber 6. And due to the action of gravity, the paint sprayed into the partition chamber 6 will fall under its own gravity. Thus, the air - guiding port matching the nozzle 19 will use compressed air to form an auxiliary blowing close to the falling paint relative to the rear column body 1 of the vehicle frame to improve the effective utilization rate of the paint. And along with the continuous rotation of the rotating housing 3, the rear column body 1 of the vehicle frame rotates self - rotatably within the corresponding partition chamber 6 to achieve full coverage of circumferential painting and full coverage of drying of the rear column body 1 of the vehicle frame. And the operation sequence of the rear column body 1 of the vehicle frame should be the sequence of spraying first and then drying. When the dried rear column body 1 of the vehicle frame is transferred into the limit protection frame 46 again, the taken - out rear column body 1 of the vehicle frame that has been sprayed can be taken out, and a rear column body 1 of the vehicle frame that needs a spraying operation can be loaded again at the corresponding taken - out position.

[0045] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above - mentioned exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any aspect, the embodiments should be regarded as exemplary and non - restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0046] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A spraying device for the rear column of a forklift truck frame, characterized in that, It includes the rear column body (1) of the vehicle frame, a clamping system, and an operating system; The clamping system includes a main frame (2). A rotating housing (3) is rotatably connected to the main frame (2). A servo motor (4) is installed inside the main frame (2). The servo motor (4) is used to drive the rotation of the rotating housing (3) relative to the main frame (2). A plurality of stepped working ports (5) are formed on the rotating housing (3). An operating cavity is formed inside the rotating housing (3). A plurality of partition chambers (6) are fixedly connected inside the operating cavity. Lifting base frames (7) are arranged inside the plurality of partition chambers (6). Tops of the plurality of lifting base frames (7) are fixedly connected with top frames (8). Slide frames (9) are slidably connected inside the plurality of top frames (8). A plurality of elastic springs (10) are fixedly connected to the plurality of slide frames (9). The plurality of elastic springs (10) are respectively fixedly connected to the plurality of top frames (8). Lifting limit components are installed inside the plurality of slide frames (9). Bottom ends of the plurality of slide frames (9) are rotatably connected with gear frames (11). The plurality of gear frames (11) respectively match with the plurality of lifting limit components. An internal gear ring (12) is arranged inside the operating cavity. The plurality of gear frames (11) are all meshed with the internal gear ring (12). Bottom ends of the plurality of lifting base frames (7) are fixedly connected with bottom frames (13). Bottom positioning discs (14) are rotatably connected inside the plurality of bottom frames (13). The top end of the bottom positioning disc (14) is a concave conical groove structure; The operating system includes a central cylinder frame (15). The internal gear ring (12) is fixedly connected to the central cylinder frame (15) through a plurality of umbrella support rods. The central cylinder frame (15) is fixedly connected to the main frame (2). Two installation ports are formed on the central cylinder frame (15). An air guide shell (16) and a spraying shell (17) are respectively installed inside the two installation ports. A plurality of air jet ports (18) are arranged on the air guide shell (16). A plurality of nozzles (19) are arranged on the spraying shell (17). A plurality of the nozzles (19) are all equipped with air intake ports. The plurality of air intake ports are arranged in a downward inclined manner that gradually decreases from inside the spraying shell (17) to the outside. The plurality of air intake ports are all arranged on the spraying shell (17). A pipeline system is arranged inside the central cylinder frame (15). The pipeline system is used for guiding, transporting, and supplying corresponding substances to the air jet ports (18), the nozzles (19), and the air intake ports; Each of the lifting limit components includes a lifting rod (20). The plurality of lifting rods (20) are respectively slidably connected in the plurality of sliding frames (9). The bottom ends of the plurality of lifting rods (20) are rotatably connected to rotating rods (21). The bottom ends of the plurality of rotating rods (21) are fixedly connected to top positioning discs (22). The plurality of gear frames (11) are respectively rotatably connected to the bottom ends of the plurality of sliding frames (9). A sliding opening (23) is formed in each of the plurality of gear frames (11). The plurality of rotating rods (21) are respectively in sliding fit with the plurality of sliding openings (23). A guiding opening (25) is formed in each of the plurality of lifting rods (20). A tension spring (24) is fixedly connected in each of the plurality of guiding openings (25). The plurality of tension springs (24) are respectively fixedly connected to the plurality of sliding frames (9). A triple opening groove (26) is formed in the bottom end of the main body frame (2). A through communication port (27) is formed in the triple opening groove (26). A middle cylinder frame (28) is rotatably connected in the through communication port (27). The middle cylinder frame (28) is fixedly connected to the rotating housing (3). A bevel gear ring (29) is fixedly connected to the bottom end of the middle cylinder frame (28). The bevel gear ring (29) meshes with a driving gear ring (30). The driving gear ring (30) is connected to the output shaft of the servo motor (4). The pipeline system includes a hot air guiding pipe (34), a paint guiding pipe (35) and a compressed air guiding pipe (36). The hot air guiding pipe (34), the paint guiding pipe (35) and the compressed air guiding pipe (36) all enter the middle cylinder frame (28) from the triple opening groove (26) through corresponding side ports (33). The plurality of jet ports (18) are all communicated with the hot air guiding pipe (34). The plurality of spray heads (19) are all communicated with the paint guiding pipe (35). The plurality of air guiding ports are all communicated with the compressed air guiding pipe (36).

2. The spraying device for the rear column of a forklift truck frame according to claim 1, wherein: A fixed cylinder frame (31) is fixedly connected to the bottom end of the central cylinder frame (15). The fixed cylinder frame (31) is in rotational fit with the middle cylinder frame (28). A support plate (32) is fixedly connected to the bottom end of the fixed cylinder frame (31). The support plate (32) is fixedly connected in the triple opening groove (26). Two side ports (33) are formed in the fixed cylinder frame (31).

3. The spraying device for the rear column of a forklift truck frame according to claim 2, characterized in that: A single support (37) and a double support (38) are fixedly connected in the triple opening groove (26) and the middle cylinder frame (28). The single support (37) is used for auxiliary support and positioning of the hot air guiding pipe (34). The double support (38) is used for auxiliary support and positioning of the paint guiding pipe (35) and the compressed air guiding pipe (36).

4. The spraying device for the rear column of a forklift truck frame according to claim 3, characterized in that: A double concave middle support block (39) is arranged in the double support (38). The double concave middle support block (39) is arranged between the paint guiding pipe (35) and the compressed air guiding pipe (36).

5. The spraying device for the rear column of a forklift truck frame according to claim 4, characterized in that: A handle ring (40) is fixedly connected to each of the plurality of sliding frames (9), a secondary lifting bent tube (41) is fixedly connected to each of the plurality of lifting rods (20), each of the plurality of secondary lifting bent tubes (41) is slidably connected with a sliding bent rod (42), a through hole is formed in each of the plurality of top frames (8), each of the plurality of sliding bent rods (42) is slidably connected with each of the through holes, each of the plurality of sliding bent rods (42) is in sliding fit with each of the plurality of lifting base frames (7), and a cross bar (43) is fixedly connected to the bottom end of each of the plurality of sliding bent rods (42).

6. The spraying device for the rear column of a forklift truck frame according to claim 5, characterized in that: A plurality of force - applying hand grooves (44) are formed in each of the plurality of lifting base frames (7), and a quick - connecting pipe (45) is communicated with each of the hot - air guiding pipe (34), the paint guiding pipe (35) and the compressed - air guiding pipe (36).

7. The spraying device for the rear column of a forklift truck frame according to claim 6, characterized in that: A limiting protective frame (46) is fixedly connected to the main body frame (2), an outer annular pool box (47) is fixedly connected to the top end of the main body frame (2), an inner annular pool box (48) is fixedly connected to the rotating housing (3), an inclined vertical hole is provided on each of the plurality of bottom frames (13), a plurality of inclined through holes which are all communicated with the inner annular pool box (48) are provided on the inner bottom wall of the rotating housing (3), each of the plurality of inclined through holes is communicated with each of the inclined vertical holes, each of the plurality of bottom positioning discs (14) is made of a water - permeable material, the inner annular pool box (48) is communicated with the outer annular pool box (47), a rotating seal is arranged between the inner annular pool box (48) and the outer annular pool box (47), and an outer drainage pipe (49) is linked to the bottom end of the outer annular pool box (47).

Images