A storage and transportation box painting and turning device

Abstract

A painting and turning device for a storage and transportation box includes a base frame assembly, a friction wheel assembly mounted on the base frame assembly, a turning frame assembly mounted on the friction wheel assembly, and a transmission assembly. The friction wheel assembly includes two driving roller assemblies and two driven roller assemblies located at the four corners of the base frame assembly. The turning frame assembly includes two turning frames for clamping and fixing the storage and transportation box and two support frames for connecting the two turning frames. The two turning frames are symmetrically located at both ends of the base frame assembly, with the distance between the two turning frames being less than the length of the storage and transportation box. The two support frames are symmetrically connected between the two turning frames. Each turning frame includes a fixing device with a U-shaped opening groove inside for positioning the storage and transportation box, and an outer arc surface at the outer end of the fixing device that mates with the rubber friction rollers of the friction wheel assembly. This device allows for a one-time painting operation within the painting workshop, optimizing the production process and significantly improving painting efficiency.

Description

Technical Field

[0001] This invention belongs to two technical fields: machining and mechanical transmission. Specifically, it is a storage and transportation box spray painting and turning device. Background Technology

[0002] The main surfaces to be painted for the storage and shipping boxes are the four outer surfaces of the box. The surfaces of the storage and shipping boxes require processes such as spraying primer, spraying heat insulation coating, spraying topcoat, sanding, and applying adhesive. Currently, the workshop cannot complete the painting of all the outer surfaces of the storage and shipping boxes in one go in the painting workshop. For the storage and shipping boxes placed on the transfer flatbed, only three sides can be painted at a time. When painting the bottom surface, the storage and shipping box must be moved outside the painting workshop, and the box must be rotated 90° with the help of an overhead crane before it can be moved back into the painting workshop for painting. Currently, completing the processes of spraying primer, spraying heat insulation coating, spraying topcoat, sanding, and applying adhesive requires two people to manually rotate the box more than 10 times using an overhead crane, which takes a total of 2 hours. Spraying heat insulation coating requires two people for 12 hours. The operation process is complicated, the work efficiency is low, the production cycle is long, and the labor cost is high. Summary of the Invention

[0003] The purpose of this invention is to solve the problem that storage and shipping boxes cannot be flipped in the painting workshop, and to provide a storage and shipping box painting and flipping device that can complete the painting operation in one go in the painting workshop, optimize the production process, and greatly improve the efficiency of the painting operation.

[0004] The technical solution of the present invention is: a storage and transportation box painting and turning device, comprising a base frame assembly, a friction wheel assembly mounted on the base frame assembly, a turning frame assembly mounted on the friction wheel assembly for clamping the storage and transportation box, and a transmission assembly for driving the turning frame assembly to turn by driving the friction wheel assembly to rotate.

[0005] The friction wheel assembly includes two active roller assemblies and two passive roller assemblies respectively disposed on the four corners of the base frame assembly. The two active roller assemblies are symmetrically disposed on both sides of one end of the base frame assembly, and the two passive roller assemblies are symmetrically disposed on both sides of the other end of the base frame assembly.

[0006] The flipping frame assembly includes two flipping frames for clamping and fixing the storage and transportation box and two support frames for connecting the two flipping frames. The two flipping frames are symmetrically arranged at both ends of the base frame assembly. The distance between the two flipping frames is less than the length of the storage and transportation box. The two support frames are symmetrically connected between the two flipping frames.

[0007] The tilting frame includes a fixing device, which has a U-shaped opening groove inside for positioning the storage and transportation box, and an outer arc surface at the outer end of the fixing device that cooperates with the rubber friction roller of the friction wheel assembly.

[0008] The bottom wall of the U-shaped opening groove of the fixing device has a positioning pin and two positioning blocks arranged side by side for positioning. The positioning pin is located in the middle and is mounted on the positioning pin mounting plate. The top of the positioning pin is a conical cylindrical structure that matches the positioning pin hole at the bottom of the storage and transportation box and whose outer diameter gradually increases from top to bottom. The bottom is a screw structure that matches the threaded hole on the positioning pin mounting plate.

[0009] The two positioning blocks are symmetrically arranged on the left and right sides of the positioning pin. Each positioning block is mounted on a base plate, which is fixed to the base plate mounting plate. The positioning block is a stepped structure that matches the structural dimensions of the locking block at the bottom of the storage and transportation box. The upper part of the positioning block is a waist-shaped boss structure, and the lower part is a square base structure. The bottom surface of the square base has an inner cavity with a threaded hole. The upper middle part of the base plate has a square boss that matches the inner cavity, and the square boss also has a threaded hole. After the square boss in the middle of the base plate is inserted into the inner cavity of the positioning block, it is fixed by bolts.

[0010] The bottom of the two side walls of the U-shaped opening groove are symmetrically equipped with guide devices that serve as buffers and guides.

[0011] The inner sides of the opening end of the U-shaped slot are equipped with limiting devices for clamping the storage and transportation box to prevent it from shaking during the flipping process, and the outer sides are equipped with idler wheel assemblies for limiting the flipping angle of the flipping frame.

[0012] The cross-sectional dimension of the U-shaped opening groove of the fixing device is larger than the cross-sectional dimension of the storage and transportation box. The outer arc surface of each fixing device is tangent to the outer circle of the rubber friction roller composed of two active roller assemblies or two driven roller assemblies on the same side, so as to realize friction wheel transmission.

[0013] The fixing device is assembled by welding two side plates arranged side by side and an arc plate connecting the outer contours of the two side plates. The central angle of the arc plate is greater than 270°, and the opening width is greater than the width of the storage and transportation box. The outer contour of the side plate is a circle with the same inner diameter as the arc plate, and the inner contour is U-shaped. The opening width of the U-shape is the same as the opening width of the arc plate. The distance between the two side plates is slightly smaller than the width of the arc plate. The bottom edge of the U-shaped contour of each side plate has a protrusion 1 for docking with the positioning pin mounting plate and a protrusion 2 for docking with the bottom plate mounting plate. There are two protrusions 2, which are symmetrically arranged on both sides of protrusion 1. Each protrusion forms a concave part between the bottom edge of the inner U-shaped contour. The corresponding concave parts of the two side plates are connected by a reinforcing plate. The middle part of the side plate has symmetrical lifting holes on the left and right. Each side plate is provided with 4 support frame mounting plates.

[0014] The guiding device includes a guide mounting plate and guide blocks symmetrically mounted on both sides of the guide mounting plate. The bottom of the two sides of the U-shaped contour inside the side plate has guide mounting plate welding grooves for positioning and welding the guide mounting plate. The guide mounting plate is reinforced and fixed to each side plate by at least one triangular rib plate. The upper part of the guide block is inclined outward to form a ramp surface for guiding. The distance between the lower parts of the two guide blocks of the two guiding devices is the same as the width of the storage and transportation box.

[0015] The limiting device includes a locking plate and one or more locking bolts threaded onto the locking plate. The upper ends of both sides of the U-shaped contour inside the side plate are provided with locking plate welding grooves for positioning and welding the locking plate.

[0016] The support frame is a frame structure welded together from two long horizontal beams and several short vertical beams. The two ends of the long horizontal beams are equipped with connecting plates. The connecting plates are fixed to the end faces of the long horizontal beams by welding with four support ribs. The connecting plates have through holes symmetrically opened around their perimeter, which correspond to the threaded holes of the support frame mounting plates on the side plates.

[0017] The idler assembly includes two obtuse-angled isosceles triangular support plates symmetrically arranged on the outside of the two side plates and an idler assembly installed at one of the acute angles of the two support plates. Two bushings are fixed in the through holes at the three included angles of the two support plates. The distance between the inner sides of the two bushings on the two support plates is equal to the distance between the two side plates.

[0018] There are two idler gear assembly mounting holes on both sides of the side plate opening. The middle part of the connecting shaft passes through the corresponding idler gear assembly mounting hole. After passing through the bushings on the corresponding support plate at both ends, a fixing nut is installed on the external thread at the end.

[0019] The idler wheel assembly consists of a cylinder, end plates, and axle. Circular end plates are provided on both ends of the cylinder, with the outer diameter of the end plates being the same as the inner diameter of the cylinder. The axle is placed perpendicular to the end plates, with its axis coinciding with the cylinder axis and parallel to the outer arc surface of the fixing device. The axle and the bushing have a clearance fit, and the protruding end of the axle has a through hole for installing a limiting cotter pin. The distance between the axis of the cylinder and the axis of the outer arc surface of the fixing device is slightly greater than the sum of the radius of the circle containing the outer arc surface of the fixing device and the radius of the cylinder.

[0020] The underframe assembly includes a rectangular frame welded together from two crossbeams and two longitudinal beams, with reinforcing crossbeams, reinforcing longitudinal beams, and reinforcing inclined beams in the middle of the rectangular frame for reinforcement.

[0021] The active roller assembly includes an active roller shaft, with a bushing fitted at both ends of the active roller shaft and then installed in two bearings with seats. A rubber friction roller is fitted in the middle of the active roller shaft.

[0022] The driven roller assembly includes a driven roller shaft, with two other shaft sleeves fitted onto both ends of the driven roller shaft and then mounted in two other bearings with seats. Another rubber friction roller is fitted into the middle of the driven roller shaft.

[0023] The inner hole of the rubber friction roller has a recessed keyway in the middle, and the outer end face of the middle part of the driving roller shaft and the driven roller shaft has a key that mates with the keyway in the middle part of the corresponding rubber friction roller.

[0024] The axes of the driving roller shaft and the driven roller shaft are aligned with the length direction of the rectangular frame of the base assembly.

[0025] The base assembly has friction wheel brackets for mounting various seated bearings. The friction wheel bracket is a U-shaped support made of a long channel steel and two legs vertically connected to both ends of the long channel steel. The top of the long channel steel has through holes for mounting the corresponding seated bearings.

[0026] The transmission assembly includes a pneumatic motor, a primary reducer, and two secondary reducers located on one side of the two drive roller assemblies. The pneumatic motor and the two flange faces of the primary reducer are connected by screws. The primary reducer is connected to the input end of one of the secondary reducers through a diaphragm coupling. The two ends of the transmission shaft are connected to the two secondary reducers through star couplings. The output ends of the two secondary reducers are connected to one side of the two drive roller shafts through flange couplings.

[0027] One side of the rectangular frame has a gearbox mounting plate 1 for mounting a primary gearbox, and the upper surface of the rectangular frame has a gearbox mounting plate 2 for mounting two secondary gearboxes.

[0028] Compared with the prior art, the power input of the present invention is a pneumatic motor, which meets the fire prevention and explosion protection requirements of spray painting operations. It can directly complete the rotation of the storage and transportation box from -85° to +85° in the spray painting workshop. The rotation frame and support frame have basically no obstruction to the surface to be painted, so that the painting work of all external surfaces can be completed in one go in the spray painting workshop.

[0029] Using the flipping device of this invention eliminates the need for manual flipping, saving 100% of the flipping time. With this flipping device, only 2 people are needed for 6 hours, reducing the time for spraying the heat-insulating coating by 50%.

[0030] If a total of 500 storage and shipping boxes are sprayed in a year, and the labor cost is 50 yuan / hour, the total cost reduction is: 2 people × 2 hours × 50 yuan / hour × 500 boxes + 2 people × 6 hours × 50 yuan / hour × 500 boxes = 400,000 yuan. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the tilting frame assembly of the present invention in its initial state;

[0032] Figure 2This is a schematic diagram of the flipping frame assembly of the present invention flipped to the left extreme position;

[0033] Figure 3 This is a schematic diagram of the flipping frame assembly of the present invention flipped to its right limit position;

[0034] Figure 4 This is a schematic diagram of the friction wheel assembly structure of the present invention;

[0035] Figure 5 This is a cross-sectional view of the driven wheel assembly of the present invention;

[0036] Figure 6 This is a cross-sectional view of the drive wheel assembly of the present invention;

[0037] Figure 7 This is a schematic diagram of the active roller shaft structure of the present invention;

[0038] Figure 8 This is a top view of the chassis assembly of the present invention;

[0039] Figure 9 This is a three-dimensional structural schematic diagram of the friction wheel bracket of the present invention;

[0040] Figure 10 This is a top view of the powertrain of the present invention;

[0041] Figure 11 This is a three-dimensional structural schematic diagram of the flipping frame assembly of the present invention;

[0042] Figure 12 This is a three-dimensional structural diagram of the flipping frame of the present invention;

[0043] Figure 13 This is a three-dimensional structural schematic diagram of the fixing device of the present invention;

[0044] Figure 14 This is a structural diagram of the side plate of the present invention;

[0045] Figure 15 This is a three-dimensional structural diagram of the fixing device of the present invention that conceals the single-sided side plate;

[0046] Figure 16 yes Figure 14 A magnified view of the local structure;

[0047] Figure 17 This is a schematic diagram of the positioning pin of the present invention;

[0048] Figure 18 This is a three-dimensional structural diagram of the base plate of the present invention;

[0049] Figure 19 This is a three-dimensional structural schematic diagram of the positioning seat of the present invention;

[0050] Figure 20This is a three-dimensional structural schematic diagram of the guide block of the present invention;

[0051] Figure 21 This is a three-dimensional structural schematic diagram of the idler wheel assembly of the present invention;

[0052] Figure 22 This is a cross-sectional view of the idler wheel assembly of the present invention;

[0053] Figure 23 This is a cross-sectional view of the connecting shaft of the present invention;

[0054] Figure 24 This is a three-dimensional structural schematic diagram of the connecting frame of the present invention;

[0055] Figure 25 This is a schematic diagram of the bottom structure of the storage and transportation container. Detailed Implementation

[0056] Figure 1 , Figure 2 , Figure 3 The present invention includes a friction wheel assembly 1, a base frame assembly 2 for mounting the friction wheel assembly, a transmission assembly 3 mounted on the base frame assembly, and a tilting frame assembly 4 for transmission through rolling friction with the friction wheel assembly. The storage and transportation box is clamped and fixed in the tilting frame assembly 4 to achieve the tilting of the storage and transportation box. The transmission assembly 3 is used to drive the friction wheel assembly 1 to rotate, thereby driving the tilting frame assembly 4 to tilt.

[0057] Figure 4 , Figure 5 , Figure 6 In the friction wheel assembly 1, there are two driving roller assemblies 5 and two driven roller assemblies 6. The two driving roller assemblies 5 are symmetrically arranged on both sides of one end of the base frame assembly 2, and the two driven roller assemblies 6 are symmetrically arranged on both sides of the other end of the base frame assembly 2. The driving roller assemblies 5 and driven roller assemblies 6 have similar structures. The driving roller assembly 5 includes a driving roller shaft 24. The two ends of the driving roller shaft 24 are fitted with bushings 9 and then installed in two bearings 10. A rubber friction roller 8 is fitted in the middle of the driving roller shaft 24. The driven roller assembly 6 includes a driven roller shaft 7. The two ends of the driven roller shaft 7 are fitted with two other bushings 9 and then installed in two other bearings 10. Inside the bearing 10, another rubber friction roller 8 is fitted in the middle of the driven roller shaft 7; the rubber friction roller 8 has a concave keyway in the middle of its inner hole, and the outer end face of the driving roller shaft 24 and the driven roller shaft 7 has a key 11 that mates with the keyway in the middle of the corresponding rubber friction roller 8; the seated bearing 10 is a UCP type seated bearing, and the UCP type seated bearing 10 of the friction wheel assembly 1 is fixed to the friction wheel bracket 12 on the base frame assembly 2 by bolts, and the axial direction of the driving roller shaft 24 and the driven roller shaft 7 is consistent with the length direction of the rectangular frame 13 of the base frame assembly 2.

[0058] Figure 7In the middle, the drive roller shaft 24 is a four-section stepped shaft. Section I of the drive roller shaft 24 is provided with a key, and its outer diameter is clearance-fitted with the inner diameter of the rubber friction roller 8. The length of section I is the same as the length of the rubber friction roller 8. The outer diameter of section II is slightly smaller than that of section I. Section II is clearance-fitted with the inner diameter of the bushing 9. The length of section II is the same as the length of the bushing 9. The outer diameter of section III is transition-fitted with the inner diameter of the bearing 10. The length of section III is the same as the length of the bearing 10. Section IV is an extended power input shaft with a keyway. Section IV is used to connect to the output shaft of the two-stage reducer 21 through the flange coupling 25.

[0059] Figure 8 In the frame assembly 2, a rectangular frame 13 is formed by welding a series of profiles. The rectangular frame 13 is formed by welding two types of channel steel of different lengths but the same specifications, which are symmetrically inserted and welded in pairs. The two horizontal beams and two vertical beams of the rectangular frame 13 have reinforcing horizontal beams, reinforcing vertical beams and reinforcing inclined beams in the middle for reinforcement, thereby ensuring that the frame assembly has good rigidity and stability. The frame assembly 2 has friction wheel brackets 12 for mounting each bearing 10. A reducer mounting plate 15 is horizontally provided on the outer side of the rectangular frame 13. Two relatively centrally symmetrical reducer mounting plates 16 are provided on the upper surface of the rectangular frame 13 adjacent to two friction wheel brackets 12. There is a certain height difference between the reducer mounting plate 15, the two reducer mounting plates 16 and the friction wheel brackets 12. Four lifting lugs 17 are symmetrically welded vertically at the four corners of the outer side of the rectangular frame 13.

[0060] Figure 9 In the middle, the friction wheel bracket 12 is made of three 45° beveled channel steels welded together to form a U-shaped support. The two legs 18 of the friction wheel bracket 12 are welded and fixed to the upper surface of the rectangular frame. The end face of each long channel steel 14 has the same height, and two pairs of four through holes for installing seated bearings 10 are symmetrically opened on the end face. The eight friction wheel brackets 12 on the upper surface of the rectangular frame are arranged in pairs and symmetrically distributed at the four corners of the base frame assembly. The distance between the pairs of friction wheel brackets 12 is greater than the length of the rubber friction roller 8. The distance in the length and width directions of each group of friction wheel brackets 12 meets the installation and positioning dimensions of the storage and transportation box.

[0061] Figure 10 In the transmission assembly 3, the main components are a pneumatic motor 19, a primary reducer 20, two secondary reducers 21, and a long transmission shaft 22. The pneumatic motor 19 and the primary reducer 20 are connected by screws between their flange faces. The primary reducer 20 is connected to one of the secondary reducers 21 by a diaphragm coupling 23. The two secondary reducers 21 are respectively connected to their corresponding drive roller shafts 24 by flange couplings 25. The two ends of the long transmission shaft 22 are respectively connected to the two secondary reducers 21 by star couplings 26. The reducers are connected to the reducer mounting plate by bolts.

[0062] Figure 11In the process, the tilting frame assembly 4 includes two tilting frames 27 for clamping and fixing the storage and transportation boxes, and two support frames 28 for connecting the tilting frames. The support frames 28 and the tilting frames 27 are placed in parallel alignment and connected by bolts. The distance between the two tilting frames 27 is less than the length of the storage and transportation box.

[0063] Figure 12 , Figure 13 In the rotating frame 27, there are a fixing device 29 with an outer arc surface and a U-shaped opening groove for rotation and support, a positioning pin 30 for positioning, a positioning block 31 for positioning, a base plate 32 for connecting the positioning block 31, a guide block 33 for buffering and guiding, an idler wheel assembly 34 for limiting the rotation of the rotating frame from -85° to +85°, and a locking bolt 35 for clamping the storage and transportation box to prevent it from shaking during the rotating process. The cross-sectional dimension of the U-shaped opening groove of the fixing device 29 is larger than the cross-sectional dimension of the storage and transportation box body. The outer arc surface of each fixing device 29 is tangent to the outer circle of the two rubber friction rollers 8 on one side of the friction wheel assembly 1, realizing friction wheel transmission. The positioning pin 30 is located in the middle, and there are two positioning blocks 31, which are symmetrically arranged on the left and right sides of the positioning pin 30. Each positioning block 31 is mounted on a base plate 32. The bottom surface of the U-shaped opening groove of the fixing device 29 is provided with a positioning pin mounting plate 36 and a base plate mounting plate 37. The positioning pin mounting plate 36 and the base plate mounting plate 37 are provided with threaded holes for connecting and fixing the corresponding positioning pin 30 and base plate 32. Symmetrically arranged guide devices for buffering and guiding are installed at the bottom of both sides of the U-shaped opening groove. Each guide device includes a guide mounting plate 38 with threaded holes at both ends for connecting and fixing guide blocks 33. The guide mounting plate 38 is reinforced and fixed to the side plate 40 by stiffeners. After installation, the upper parts of the two opposing guide blocks 33 tilt outwards to form a ramp surface for guiding, and the distance between the lower parts of the two opposing guide blocks 33 is the same as the width of the storage and transportation box. Limiting devices for clamping the storage and transportation box and preventing it from shaking during tilting are installed on the inner sides of both sides of the opening end of the U-shaped opening groove. These limiting devices include locking plates 39 with symmetrical threads on the left and right sides. A through hole is used to fix the locking bolt 35; the idler wheel assembly 34 is located at the outer port of the outer arc surface of the fixing device. After the idler wheel assembly 34 is installed, when the flipping frame assembly 4 rotates from the initial position to 85° in the positive direction, the idler wheel component 49 on the idler wheel assembly 34 contacts the rubber friction roller 8 and generates relative rolling. The flipping frame assembly 4 stops rotating, and the flipping angle remains unchanged at 85°. When the flipping frame assembly 4 rotates from the initial position to -85° in the negative direction, the idler wheel component 49 on the other side of the idler wheel assembly 34 contacts the rubber friction roller 8 on the other side and generates relative rolling. The flipping frame assembly 4 stops rotating, and the flipping angle remains unchanged at -85°.

[0064] Figure 14 , Figure 16In the middle, the main body of the fixing device 29 is welded together from two side plates 40 and an arc plate 41. The central angle of the arc plate 41 is greater than 270°, and the opening width is slightly larger than the width of the storage and transportation box. The side plate 40 has an axisymmetric structure with a circular outer contour and the same diameter as the inner diameter of the arc plate. The inner contour is U-shaped. The width of the U-shaped opening of the two side plates 40 is the same as the width of the opening of the arc plate 41. The two side plates 40 are placed parallel and aligned, with a spacing slightly smaller than the width of the arc plate 41. The outer circle of the side plate 40 fits into the inner circle of the arc plate 41. The side edge of the inner U-shaped contour of the side plate 40 has a locking plate welding groove 42 and a guide mounting plate welding groove 43 from top to bottom. The bottom edge of the U-shaped contour of the side plate 40 has a protrusion 44 in the middle and a protrusion 45 on the adjacent left and right sides. The concave parts formed between each protrusion and the bottom edge of the inner U-shaped contour are connected by a reinforcing plate. The sunken concave parts can leave space to reduce the obstruction of the storage and transportation box by the fixing device 29 during the painting operation, so that the fixing device has a certain strength and ensures that it does not affect the hoisting of the storage and transportation box and subsequent painting operations. Each side plate 40 is provided with four support bracket mounting plates 46. Each support bracket mounting plate 46 has threaded holes at its four corners. The support bracket mounting plates 46 are located between the arc plate 41 and the inner U-shaped contour side of the side plate 40 and are welded to the side plate 40. Each support frame 28 corresponds to four support bracket mounting plates 46. The upper center of the side plate 40 has symmetrically opened lifting holes 47, and the upper part has symmetrically opened four idler wheel assembly mounting holes 48.

[0065] Figure 15 In the middle, the two side plates are reinforced and fixed by several stiffening plates of different lengths.

[0066] Figure 17 In the middle, the tail of the positioning pin 30 is a screw, and the head is a conical cylindrical structure. The tail screw cooperates with the threaded hole on the positioning pin mounting plate 36, and the head conical cylindrical structure cooperates with the positioning pin hole 101 at the bottom of the storage and transportation box. The outer diameter of the head conical cylindrical structure gradually increases from top to bottom.

[0067] Figure 18 , Figure 19 In the middle, the upper half of the base plate 32 is a square boss structure, and the lower half is a square base structure. Both the upper boss and the lower base are provided with threaded holes for connection and fixation. The positioning block 31 is a stepped structure that matches the structural dimensions of the locking block 102 at the bottom of the storage and transportation box. The upper half of the positioning block 31 is a waist-shaped boss structure, and the lower half is a square base structure. The bottom surface of the square base is provided with an inner cavity, and the inner cavity is provided with threaded holes. The boss of the base plate 32 is inserted into the inner cavity of the positioning block 31 and fixed by bolts.

[0068] Figure 20In the middle, the guide block 33 is a rectangular plate. The upper part of the guide block 33 is inclined outward to form a ramp surface for guidance. The lower part of the guide block 33 has two countersunk through holes. The guide mounting plate 38 is placed symmetrically in the guide mounting plate welding groove 43 in the fixing device 29. The guide mounting plate 38 is reinforced and fixed to the side plate 40 by four stiffeners. The guide mounting plate 38 has four threaded holes for connecting the guide blocks 33. Two guide blocks 33 can be installed on one guide mounting plate 38.

[0069] Figure 21 , Figure 22 In this structure, the idler gear assembly 34 mainly consists of an idler gear component 49, a support plate 50, a connecting shaft 51, and a bushing 52. The support plate 50 is shaped like an obtuse-angled isosceles triangle, with two parallel alignments arranged at a distance slightly greater than the width of the arc plate 41. Three through holes are formed at the three included angles of the support plate 50, with the inner diameter of each through hole matching the outer diameter of the bushing 52. A bushing 52 is welded into each of the three through holes in the support plate 50. The inner distance between two opposing bushings 52 on the two support plates 50 is equal to the distance between the two side plates 40. Two idler gear assembly mounting holes 48 are located on either side of the open end of the side plate 40. The connecting shaft 51 passes through the corresponding idler gear assembly mounting hole 48 in the middle, and its two ends pass through the bushings 52 on the corresponding support plates 50, with fixing nuts installed on the external threads at the ends.

[0070] The idler wheel assembly 49 consists of a cylinder 53, a sealing plate 54, and a wheel axle 55. Circular sealing plates 54 are provided on both ends of the cylinder 53, with the outer diameter of the sealing plate 54 being the same as the inner diameter of the cylinder 53. The wheel axle 55 is placed perpendicular to the sealing plate 54, with its axis coinciding with the axis of the cylinder 53 and parallel to the outer arc surface of the fixing device 29. The wheel axle 55 has a clearance fit with the bushing 52, allowing the cylinder 53 to roll freely. A through hole is provided at the protruding end of the wheel axle 55 for installing a limiting cotter pin. One idler wheel assembly 49 is located in the bushing at an acute angle, and two connecting shafts 51 are located in two other pairs of bushings.

[0071] Figure 23 In the middle, the connecting shaft 51 is a three-section stepped shaft. Section I has a clearance fit with the idler wheel assembly mounting holes 48 on the two side plates 40, and its length is equal to the distance between the two side plates 40. Section II has a shaft diameter slightly smaller than Section I, and its journal has a small clearance fit with the bushing 52, and its length is the same as the bushing. Section III is the protruding end, with a shaft diameter slightly smaller than Section II, and its surface is provided with external threads. It is used with a nut to firmly connect the idler wheel assembly 34 to the fixing device 29.

[0072] Figure 24In the middle, the support frame is welded together from square tubes of the same specification but different lengths. Two long horizontal beams 56 are placed parallel and aligned. Four short vertical beams 57 are arranged at equal intervals in the middle and welded and fixed to the long horizontal beams 56. Connecting plates 58 are provided at both ends of the long horizontal beams 56. The two connecting plates 58 are placed parallel and aligned. The connecting plates 58 are welded and fixed to the end face of the long horizontal beams 56 by four supporting ribs. Symmetrical through holes are opened around the connecting plates, which correspond to the threaded holes of the support frame mounting plate 46 on the side plate 40.

[0073] Figure 25 This is a schematic diagram of the bottom structure of the storage and transportation container.

[0074] The method of using this invention is as follows: First, the base frame assembly 2, transmission assembly 3, and friction wheel assembly 1 are hoisted onto the transfer flatbed truck. The tilting frame assembly 4 is placed centrally on the friction wheel assembly 1, with the opening of the tilting frame assembly 4 facing horizontally upwards. Then, the storage and transport box to be painted is horizontally hoisted into the tilting frame assembly 4. The storage and transport box is clamped and fixed by the positioning pin 30, positioning block 31, guide block 33, and locking bolt 35 in the tilting frame 27. After the transfer flatbed truck moves the tilting device and the storage and transport box into the painting workshop, the air source in the painting workshop is connected to the air inlet of the pneumatic motor 19. The pneumatic motor 19 converts compressed air into mechanical energy, which is then transmitted to the two active roller assemblies 5 through a first-stage reducer and a second-stage reducer. The rubber friction rollers 8 on the active roller assemblies 5 roll against the arc plate 41 on the fixing device 29, achieving rolling friction and thus driving the tilting frame assembly 4 and the storage and transport box to tilt. By operating the reversing valve on the pneumatic motor, the storage and transportation container can be flipped to both sides. When the container is flipped to its limit to one side, the idler wheel assembly 49 on the idler wheel assembly 34 will contact the rubber friction roller 8 on the friction wheel assembly 1. The rubber friction roller 8 will drive the idler wheel assembly 49 to rotate, at which point the tilting frame assembly 4 will stop flipping, ensuring that the tilting frame assembly 4 flips at a safe angle. After painting, the tilting frame assembly 4 must be flipped back to its pre-lifting state, and then the locking bolt 35 must be loosened before the storage and transportation container can be lifted from the tilting frame assembly 4.

Claims

1. A tilting device for spray painting of storage and transportation boxes, characterized in that: It includes a base frame assembly (2), a friction wheel assembly (1) mounted on the base frame assembly (2), a tilting frame assembly (4) mounted on the friction wheel assembly (1) for clamping the storage and transportation box (100), and a transmission assembly (3) for rotating the tilting frame assembly (4) by driving the friction wheel assembly (1) to rotate; The friction wheel assembly (1) includes two active roller assemblies (5) and two passive roller assemblies (6) respectively disposed on the four corners of the base frame assembly (2). The two active roller assemblies (5) are symmetrically disposed on both sides of one end of the base frame assembly (2), and the two passive roller assemblies (6) are symmetrically disposed on both sides of the other end of the base frame assembly (2). The flip frame assembly (4) includes two flip frames (27) for clamping and fixing the storage and transportation box and two support frames (28) for connecting the two flip frames. The two flip frames (27) are symmetrically arranged at both ends of the base frame assembly (2). The distance between the two flip frames (27) is less than the length of the storage and transportation box. The two support frames (28) are symmetrically connected between the two flip frames (27). The flipping frame (27) includes a fixing device (29), which has a U-shaped opening groove for positioning the storage and transportation box inside. The outer end of the fixing device (29) is an outer arc surface that cooperates with the rubber friction roller (8) of the friction wheel assembly (1). The inner part of the two sides of the opening end of the U-shaped opening groove is equipped with a limiting device for clamping the storage and transportation box to prevent it from shaking during the flipping process, and the outer part is equipped with an idler wheel assembly (34) for limiting the flipping angle of the flipping frame (27). The idler assembly (34) includes two obtuse-angled isosceles triangular support plates (50) symmetrically arranged outside the two side plates (40) and an idler assembly (49) installed at one of the acute angles of the two support plates (50). The two bushings (52) are fixed in the through holes at the three included angles of the two support plates (50). The distance between the inner sides of the two bushings (52) opposite each other on the two support plates (50) is equal to the distance between the two side plates (40). There are two idler wheel assembly mounting holes (48) on both sides of the opening end of the side plate (40). The middle part of the connecting shaft (51) is inserted into the corresponding idler wheel assembly mounting hole (48). After the two ends pass through the bushings (52) on the corresponding support plate (50), a fixing nut is installed on the external thread of the end. The idler wheel assembly (49) consists of a cylinder (53), a sealing plate (54), and a wheel axle (55). The cylinder (53) has circular sealing plates (54) on both ends. The outer diameter of the sealing plate (54) is the same as the inner diameter of the cylinder (53). The wheel axle (55) is placed perpendicular to the sealing plate (54). The axis of the wheel axle (55) coincides with the axis of the cylinder (53) and is parallel to the outer arc surface of the fixing device (29). The wheel axle (55) is clearance-fitted with the bushing (52). The protruding end of the wheel axle (55) is provided with a through hole for installing a limiting cotter pin. The distance between the axis of the cylinder (53) and the axis of the outer arc surface of the fixing device (29) is slightly greater than the sum of the radius of the circle containing the outer arc surface of the fixing device (29) and the radius of the cylinder (53).

2. The storage and transportation box painting and turning device according to claim 1, characterized in that: The U-shaped opening groove of the fixing device (29) has a positioning pin (30) and two positioning blocks (31) arranged side by side. The positioning pin (30) is located in the middle and is mounted on the positioning pin mounting plate (36). The top of the positioning pin (30) is a conical cylindrical structure that cooperates with the positioning pin hole (101) at the bottom of the storage and transportation box and whose outer diameter gradually increases from top to bottom. The bottom is a screw structure that cooperates with the threaded hole on the positioning pin mounting plate (36). The two positioning blocks (31) are symmetrically arranged on the left and right sides of the positioning pin (30). Each positioning block (31) is mounted on a base plate (32), and the base plate (32) is fixed on the base plate mounting plate (37). The positioning block (31) is a stepped structure that matches the structural dimensions of the bottom locking block (102) of the storage and transportation box. The upper part of the positioning block (31) is a waist-shaped boss structure, and the lower part is a square base structure. The bottom surface of the square base is provided with an inner cavity, and the inner cavity is provided with a threaded hole. The upper middle part of the base plate (32) has a square boss that matches the inner cavity, and the square boss also has a threaded hole. After the square boss in the middle of the base plate (32) is inserted into the inner cavity of the positioning block (31), it is fixed by bolts. The bottom of the two side walls of the U-shaped opening groove are symmetrically equipped with guide devices.

3. A storage and transportation box painting and turning device according to claim 1 or 2, characterized in that: The U-shaped opening groove of the fixing device (29) has a cross-sectional dimension larger than that of the storage and transportation box. The outer arc surface of each fixing device (29) is tangent to the outer circle of the rubber friction roller (8) composed of two active roller assemblies (5) or two driven roller assemblies on the same side.

4. The storage and transportation box painting and turning device according to claim 3, characterized in that: The fixing device (29) is welded together from two side plates (40) arranged side by side and an arc plate (41) connecting the outer contours of the two side plates. The central angle of the arc plate (41) is greater than 270°, and the opening width is greater than the width of the storage and transportation box. The outer contour of the side plate (40) is a circle with the same inner diameter as the arc plate, and the inner contour is U-shaped. The opening width of the U-shape is the same as the opening width of the arc plate (41). The distance between the two side plates (40) is slightly smaller than the width of the arc plate (41). Each side plate (40) has a U-shaped wheel. The bottom edge of the profile has a protrusion 1 (44) for docking with the positioning pin mounting plate (36) and a protrusion 2 (45) for docking with the bottom plate mounting plate (37). There are two protrusions 2 (45), which are symmetrically arranged on both sides of the protrusion 1 (44). Each protrusion forms a recess between itself and the bottom edge of the inner U-shaped profile. The corresponding recesses of the two side plates are connected by a reinforcing plate. The upper middle part of the side plate (40) has symmetrically opened lifting holes (47). Each side plate (40) is provided with 4 support bracket mounting plates (46). The guiding device includes a guide mounting plate (38) and guide blocks (33) symmetrically mounted on both sides of the guide mounting plate (38). The bottom of the two sides of the U-shaped contour inside the side plate (40) has guide mounting plate welding grooves (43) for positioning and welding the guide mounting plate (38). The guide mounting plate (38) is reinforced and fixed to each side plate (40) by at least one triangular rib plate. The upper part of the guide block (33) is inclined outward to form a ramp surface for guiding. The distance between the lower parts of the two guide blocks (33) of the two guiding devices is the same as the width of the storage and transportation box. The limiting device includes a locking plate (39) and one or more locking bolts (35) threaded onto the locking plate (39). The upper ends of the two sides of the U-shaped contour inside the side plate (40) are provided with locking plate welding grooves (42) for positioning and welding the locking plate (39).

5. A storage and transportation box painting and turning device according to claim 1 or 2, characterized in that: The support frame (28) is a frame structure welded together from two long horizontal beams (56) and several short vertical beams (57). The long horizontal beams (56) have connecting plates (58) at both ends. The connecting plates (58) are fixed to the end face of the long horizontal beams (56) by four support ribs. The connecting plates have through holes symmetrically opened around their perimeter, corresponding to the threaded holes of the support frame mounting plate (46) on the side plate (40).

6. The storage and transportation box painting and turning device according to claim 1, characterized in that: The base frame assembly (2) includes a rectangular frame (13) welded together from two crossbeams and two longitudinal beams. The rectangular frame (13) has reinforcing crossbeams, reinforcing longitudinal beams and reinforcing inclined beams in the middle for reinforcement.

7. The storage and transportation box painting and turning device according to claim 1, characterized in that: The active roller assembly (5) includes an active roller shaft (24), with bushings (9) fitted at both ends of the active roller shaft (24) and then installed in two bearings (10) with seats. A rubber friction roller (8) is fitted in the middle of the active roller shaft (24). The driven roller assembly (6) includes a driven roller shaft (7), with two other bushings (9) fitted onto both ends of the driven roller shaft (7) and then installed in two other bearings (10). Another rubber friction roller (8) is fitted onto the middle of the driven roller shaft (7). The inner hole of the rubber friction roller (8) has a recessed keyway, and the outer end face of the middle part of the driving roller shaft (24) and the driven roller shaft (7) has a key (11) that mates with the keyway in the middle part of the corresponding rubber friction roller (8); The axes of the active roller shaft (24) and the driven roller shaft (7) are aligned with the length direction of the rectangular frame of the base assembly.

8. A storage and transportation box painting and turning device according to claim 1, 6 or 7, characterized in that: The base assembly (2) has a friction wheel bracket (12) for mounting each seated bearing (10). The friction wheel bracket (12) is a U-shaped support made of a long channel steel (14) and two legs (18) vertically connected to both ends of the long channel steel (14). The top of the long channel steel (14) has a through hole for mounting the corresponding seated bearing (10).

9. The storage and transportation box painting and turning device according to claim 1, characterized in that: The transmission assembly (3) includes a pneumatic motor (19), a primary reducer (20), and two secondary reducers (21) located on one side of the two active roller assemblies (5). The two flange faces of the pneumatic motor (19) and the primary reducer (20) are connected by screws. The primary reducer (20) is connected to the input end of one of the secondary reducers (21) through a diaphragm coupling (23). The two ends of the transmission shaft (22) are connected to the two secondary reducers (21) through star couplings (26) respectively. The output ends of the two secondary reducers (21) are connected to one side of the two active roller shafts (24) through flange couplings (25). A gearbox mounting plate 1 (15) for mounting a primary gearbox (20) protrudes from one side of the rectangular frame (13), and a gearbox mounting plate 2 (16) for mounting two secondary gearboxes (21) is provided on the upper surface of the rectangular frame (13).

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