Paint coating station foot board capable of being rapidly and stably fixed

Abstract

The invention relates to a finish paint coating station foot board capable of being rapidly and stably fixed. The finish paint coating station foot board comprises a left foot board locking device, a left structural cross beam, a left supporting leg, a left bearing cross beam, a bearing plate, a limiting cross beam, a right foot board locking device, a right structural cross beam, a front bearing cross beam and a right supporting leg. When a worker is assisted in paint spraying operation on the high position of a vehicle body, the pedal table is rapidly fixed through telescopic clamping mechanisms in the left pedal table locking device and the right pedal table locking device, and the problem that a traditional pedal table cannot be rapidly fixed is solved. During locking and fixing, the six positioning plates make full contact with the lower surface of the grille, friction force is increased, and the problem of movement of the foot board is effectively solved. And the upper surface of the positioning plate adopts a sawtooth structure, so that the friction force between the device and the grating is increased, and the problem of foot board movement caused by paint accumulation is effectively avoided. A mechanism composed of the rotating gear and the half-rack telescopic pin can rapidly achieve locking and unlocking operation, the operation is rapid and convenient, the installation time is saved, and the workshop production efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile painting, and in particular relates to a painting topcoat station step which can be quickly and stably fixed. Background Art

[0002] Painting is a very important process in the automobile manufacturing process. During the production process of the automobile painting factory, it is necessary to inspect and touch up the car body roof or doors and windows in the paint booth. Because the car body roof and other locations are high, the operator needs to use a certain height step to perform related operations. In addition, the floor of the paint booth must be paved with a grille to ensure that the air supply can smoothly carry away the oversprayed paint into the waste paint collection device at the bottom of the paint booth. The grille is generally composed of a set of parallel bars, which can ensure the normal passage of wind, but it will also reduce the effective contact area of ​​the grille bearing surface. The paint booth is usually designed as a structure with upper air supply and lower exhaust, and the wind is from top to bottom. During the painting process in the paint booth, the paint that is not attached to the car body will fall down with the wind, which often causes paint to adhere to the grille, and the paint reduces the friction coefficient of the grille bearing surface.

[0003] When an ordinary step is placed on the grille of a paint booth, the small contact area between the ordinary tower and the grille and the paint on the grille make it easy for the step to slide and tip over when the operator stands on the step to operate. The problem of safety accidents when using ordinary steps in paint booths has always been a prominent problem in painting. In order to avoid safety issues during production, iron wire or bolts are often used to connect the step and the grille together. Although this can prevent the step from tipping over and sliding, installation and disassembly are very time-consuming and labor-intensive, which seriously affects production efficiency and the flexibility of the production line. Based on this, it is urgent to develop a painting topcoat station step that can be quickly and stably fixed to effectively solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a painting topcoat work station step that can be quickly and stably fixed to solve the problem that the step is prone to sliding and tipping over when an operator stands on the step and operates.

[0005] The objective of the present invention is achieved through the following technical solutions:

[0006] A painting topcoat station step that can be quickly and stably fixed, comprising a left step locking device 1, a left structural crossbeam 2, a left leg 3, a left load-bearing crossbeam 4, a load-bearing plate 5, a limit crossbeam 6, a right step locking device 7, a right structural crossbeam 8, a front load-bearing crossbeam 9 and a right leg 10;

[0007] The left-side platform locking device 1 is fixedly connected to the left structural beam 2, the left structural beam 2 is fixedly connected to the left leg 3, the left bearing beam 4 is respectively fixedly connected to the left leg 3, the left structural beam 2, the left-side platform locking device 1 and the bearing plate 5, the left-side platform locking device 1 is fixedly connected to the limiting beam 6 and the front bearing beam 9, the limiting beam 6 and the front bearing beam 9 are fixedly connected to the right-side platform locking device 7, the right-side platform locking device 7 is fixedly connected to the right structural beam 8, and the right leg 10 is fixedly connected to the right structural beam 8.

[0008] Furthermore, the left-side step locking device 1 and the right-side step locking device 7 are symmetrical structures; the left supporting leg 3 and the right supporting leg 10 are consistent in structure; the left structural crossbeam 2 and the right structural crossbeam 8 are consistent in structure.

[0009] Furthermore, the left step locking device 1 includes a bearing column 11, a retractable latch device 12, an upper fixed latch device 14, a lower fixed latch device 15 and a sliding roller device 26 which are respectively fixedly connected to the bearing column 11, a center column sliding handle 13 and an intermediate column sleeve sliding handle 16 are respectively fixedly connected to the center column 24, and the center column sliding handle 13 and the intermediate column sleeve sliding handle 16 can slide in the limit groove of the bearing column 11; and also includes a retractable plate rotating pin 17, a locking positioning block 19, a retractable plate 20 and a positioning Plate 22, the shrinking plate rotating base 18 is fixedly connected to the shrinking plate rotating pin 17, the shrinking plate rotating pin 17 is connected to the pin hole of the shrinking plate 20, the shrinking plate 20 can rotate a certain angle along the central axis of the shrinking plate rotating pin 17, the locking positioning block 19 is respectively fixedly connected to the central column 24 and the shrinking plate rotating base 18, the shrinking plate 20 is fixedly connected to the positioning shrinking pin 25, the positioning shrinking pin 25 is connected to the pin hole of the positioning plate 22, the positioning plate 22 is fixedly connected to the positioning plate rotating pin 21, and the positioning plate rotating pin 21 is connected to the pin hole of the intermediate column sleeve 23.

[0010] Furthermore, there are six of the retractable plate rotating pin 17, the retractable plate rotating base 18, the locking positioning block 19, the retractable plate 20, the positioning plate rotating pin 21 and the positioning plate 22, and there are six of them in the left step locking device 1, which are respectively connected into six groups of identical structures, and the six groups of structures are arranged 60 degrees apart with the central axis of the center column 24.

[0011] Furthermore, there are four sliding roller devices 26, which are respectively fixedly connected to the bearing columns 11, and the retractable latch device 12, the upper fixed latch device 14 and the lower fixed latch device 15 have the same structure but different installation positions.

[0012] Furthermore, the sliding roller device 26 includes four sliding roller units 27, which are respectively fixedly connected to the supporting columns 11, the rollers 28 of the sliding roller units 27 are fixedly connected to the center positioning pin 29, the sliding limit block 30 is fixedly connected to the support spring 31, the support spring 31 is fixedly connected to the spring limit block 32, the spring limit block 32 is fixedly connected to the roller support base 34, the roller support plate 33 is fixedly connected to the roller support base 34, and the center positioning pin 29 can slide in the limit groove of the roller support plate 33 and be pushed upward by the support spring 31.

[0013] Furthermore, the sliding limit block 30 , the supporting spring 31 , the spring limit block 32 , and the roller supporting plate 33 are respectively two in the sliding roller unit 27 and are symmetrically arranged.

[0014] Furthermore, the retractable latch device 12 includes a latch positioning block 35, which is fixedly connected to the supporting column 11, a latch rotating handle 36 is connected to the pin hole of the latch positioning block 35, a rotating gear 37 is fixedly connected to the latch rotating handle 36, and the rotating gear 37 is connected to the gear rack of the semi-rack telescopic pin 38. The rotation of the latch rotating handle 36 can drive the rotating gear 37 to rotate, thereby causing the semi-rack telescopic pin 38 to telescope to achieve locking and opening.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. When the painting topcoat work station step of the present invention is used, workers are assisted to spray paint at a higher position of the vehicle body, and the step is quickly fixed through the telescopic tightening mechanism in the left step locking device and the right step locking device, solving the problem that the traditional step cannot be quickly fixed;

[0017] 2. There are 6 of each structure, including the retractable plate rotating pin, retractable plate rotating base, locking positioning block, retractable plate, positioning plate rotating pin and positioning plate, in the left platform locking device. They are connected into 6 groups of identical structures. The 6 groups of structures are arranged 60 degrees apart on the central axis of the center column. This allows the 6 positioning plates to fully contact the lower surface of the grille when locked and fixed, increasing the friction and effectively avoiding the problem of platform movement.

[0018] 3. The upper surface of the positioning plate adopts a serrated structure, which further increases the friction between the device and the grille, and also effectively avoids the problem of platform movement caused by paint accumulation;

[0019] 4. The sliding roller device adopts a four-sided pulley centering structure, so that the internal structure in the left platform locking device can move up and down smoothly. The floating pulley structure allows the intermediate column sleeves and center columns of different cross-sectional sizes to slide up and down in the load-bearing column. The contact surface between the plane and the roller is small, and the running resistance is small, which allows the telescopic device to move up and down quickly;

[0020] 5. The mechanism composed of the rotating gear and the half-rack telescopic pin can quickly realize the locking and unlocking operations, which is fast and convenient, saving the time required for workers to install auxiliary tools and improving the production efficiency of the workshop. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 Structural diagram of a painting topcoat station step that can be quickly and stably fixed;

[0023] Figure 2-Figure 3 A schematic diagram of the structure of the left step locking device;

[0024] Figure 4 A schematic diagram of the structure of the sliding roller device;

[0025] Figure 5 A schematic diagram of the structure of the sliding roller unit;

[0026] Figure 6 A schematic diagram of the structure of the sliding roller device;

[0027] Figure 7 Schematic diagram of the entire device structure before use;

[0028] Figure 8 Schematic diagram of the state of the left step locking device after internal contraction;

[0029] Fig. 9 Schematic diagram when the device is moved after use or when rectification is required;

[0030] Fig.10 Schematic diagram of the internal structure position of the left step locking device 1;

[0031] Fig.11 Schematic diagram of placing the entire platform in the appropriate position on the paint booth grille when in use.

[0032] In the figure, 1. left platform locking device 2. left structural crossbeam 3. left support leg 4. left load-bearing crossbeam 5. load-bearing plate 6. limit crossbeam 7. right platform locking device 8. right structural crossbeam 9. front load-bearing crossbeam 10. right support leg 11. load-bearing column 12. retractable latch device 13. center column sliding handle 14. upper fixed latch device 15. lower fixed latch device 16. middle column sleeve sliding handle 17. retractable plate rotating pin 18. retractable plate rotating base 19. Locking positioning block 20. Retraction plate 21. Positioning plate rotation pin 22. Positioning plate 23. Intermediate column sleeve 24. Center column 25. Positioning retraction pin 26. Sliding roller device 27. Sliding roller unit 28. Roller 29. Center positioning pin 30. Sliding limit block 31. Support spring 32. Spring limit block 33. Roller support plate 34. Roller support base 35. Latch positioning block 36. Latch rotating handle 37. Rotating gear 38. Half rack telescopic pin. DETAILED DESCRIPTION

[0033] The present invention will be further described below in conjunction with embodiments:

[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0035] It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. At the same time, in the description of the present invention, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0036] like Figure 1 As shown, the painting and finishing station stepping platform of the present invention which can be quickly and stably fixed comprises a left stepping platform locking device 1, a left structural beam 2, a left leg 3, a left bearing beam 4, a bearing plate 5, a limiting beam 6, a right stepping platform locking device 7, a right structural beam 8, a front bearing beam 9 and a right leg 10. The left stepping platform locking device 1 and the right stepping platform locking device 7 are symmetrical structures; the left leg 3 and the right leg 10 have the same structure; and the left structural beam 2 and the right structural beam 8 have the same structure.

[0037] The left step locking device 1 is as follows Figure 2 and Figure 3As shown, it includes a bearing column 11, a retractable latch device 12, a central column sliding handle 13, an upper fixed latch device 14, a lower fixed latch device 15, an intermediate column sleeve sliding handle 16, a retractable plate rotating pin 17, a retractable plate rotating base 18, a locking positioning block 19, a retractable plate 20, a positioning plate rotating pin 21, a positioning plate 22, an intermediate column sleeve 23, a central column 24, a positioning retractable pin 25 and a sliding roller device 26. Among them, there are six retractable plate rotating pins 17, retractable plate rotating base 18, locking positioning blocks 19, retractable plates 20, positioning plate rotating pins 21 and positioning plates 22. There are four sliding roller devices 26. The retractable latch device 12, the upper fixed latch device 14 and the lower fixed latch device 15 are three devices with the same structure but different installation positions.

[0038] The sliding roller device 26 is as follows Figure 4 As shown, it includes four sliding roller units 27. The sliding roller unit 27 is as shown in FIG. Figure 5 As shown, it includes a roller 28, a center positioning pin 29, a sliding limit block 30, a support spring 31, a spring limit block 32, a roller support plate 33 and a roller support base 34. The sliding limit block 30, the support spring 31, the spring limit block 32 and the roller support plate 33 are two in the sliding roller unit 27.

[0039] The retractable latch device 12 is as follows Figure 6 As shown, it includes a latch positioning block 35, a latch rotating handle 36, a rotating gear 37 and a half-rack telescopic pin 38.

[0040] like Figure 1 As shown, the left platform locking device 1 is fixedly connected to the left structural beam 2, and the left structural beam 2 is fixedly connected to the left leg 3. The left bearing beam 4 is fixedly connected to the left leg 3, the left structural beam 2, the left platform locking device 1 and the bearing plate 5 respectively. The left platform locking device 1 is fixedly connected to the limiting beam 6 and the front bearing beam 9. The limiting beam 6 and the front bearing beam 9 are fixedly connected to the right platform locking device 7. The right platform locking device 7 is fixedly connected to the right structural beam 8. The right leg 10 is fixedly connected to the right structural beam 8. Specifically, the above-mentioned fixed connection is connected by welding.

[0041] The left step locking device 1 is as follows Figure 2 and Figure 3As shown, it includes a bearing column 11 as the main structure of the device. The retracting latch device 12 is fixedly connected to the bearing column 11, specifically by welding. The center column sliding handle 13 is fixedly connected to the center column 24, specifically by welding. The center column sliding handle 13 can slide in the limit groove of the bearing column 11. The upper fixed latch device 14 is fixedly connected to the bearing column 11, specifically by welding. The lower fixed latch device 15 is fixedly connected to the bearing column 11, specifically by welding. The intermediate column sleeve sliding handle 16 is fixedly connected to the center column 24, specifically by welding. The intermediate column sleeve sliding handle 16 can slide in the limit groove of the bearing column 11. The retracting plate rotating pin 17 is fixedly connected to the retracting plate rotating base 18, specifically, the retracting plate rotating pin 17 and the retracting plate rotating base 18 have an interference fit. The retracting plate rotating pin 17 is connected to the pin hole of the retracting plate 20, and the retracting plate 20 can rotate a certain angle along the central axis of the retracting plate rotating pin 17. The locking positioning block 19 is fixedly connected to the center column 24 and the shrink plate rotating base 18, respectively, by welding. The shrink plate 20 is fixedly connected to the positioning shrink pin 25, by welding. The positioning shrink pin 25 is connected to the pin hole of the positioning plate 22. The positioning plate 22 is fixedly connected to the positioning plate rotating pin 21, by welding. The positioning plate rotating pin 21 is connected to the pin hole of the intermediate column sleeve 23. The sliding roller device 26 is fixedly connected to the bearing column 11, by welding.

[0042] There are six retractable plate rotating pins 17, retractable plate rotating bases 18, locking positioning blocks 19, retractable plates 20, positioning plate rotating pins 21, and positioning plates 22 in the left step locking device 1. They are connected to form six identical structures, and the six structures are arranged at 60 degrees apart on the central axis of the central column 24.

[0043] There are four sliding roller devices 26 in the left step locking device 1, which are fixedly connected to the supporting column 11 respectively. Figure 4 As shown, the sliding roller unit 27 includes four sliding roller units 27 which are respectively fixedly connected to the supporting column 11. The sliding roller unit 27 is as shown in FIG. Figure 5 As shown, the roller 28 is fixedly connected to the center positioning pin 29. The sliding limit block 30 is fixedly connected to the support spring 31. The support spring 31 is fixedly connected to the spring limit block 32. The spring limit block 32 is fixedly connected to the roller support base 34. The roller support plate 33 is fixedly connected to the roller support base 34. The center positioning pin 29 can slide in the limit groove of the roller support plate 33, and is pushed upward by the support spring 31. Except for the center positioning pin 29 and the roller 28, which are interference fit between the pin hole, the others are welded.

[0044] The sliding limit block 30, the support spring 31, the spring limit block 32, and the roller support plate 33 are respectively included in two in the sliding roller unit 27. Figure 5 As shown, it is a symmetrical arrangement.

[0045] The retractable latch device 12 is as follows Figure 6 As shown, it includes a latch positioning block 35, which is fixedly connected to the bearing column 11, specifically welded, and a latch rotating handle 36 is connected to the pin hole of the latch positioning block 35. The rotating gear 37 is fixedly connected to the latch rotating handle 36, specifically keyed. The rotating gear 37 is connected to the half-rack telescopic pin 38 gear rack. The rotation of the latch rotating handle 36 can drive the rotating gear 37 to rotate, thereby causing the half-rack telescopic pin 38 to telescope to achieve locking and opening.

[0046] Working process:

[0047] Before use, the entire device should be Figure 7 The left step locking device 1 and the right step locking device 7 are shown in the retracted state. Figure 8 As shown, the center column sliding handle 13 is located at the top of the limit groove of the support column 11 and is locked by the retractable latch device 12, and the center column sliding handle 13 cannot move. The intermediate column sleeve sliding handle 16 is located at the highest position it can reach and is locked by the upper fixed latch device 14, and the intermediate column sleeve sliding handle 16 cannot move.

[0048] When using, first place the entire platform in the appropriate position on the spray booth grid. Fig.11 As shown, the retractable latch device 12 and the upper fixed latch device 14 are opened, so that the central column sliding handle 13 and the intermediate column sleeve sliding handle 16 can move downward, and the telescopic locking mechanism in the left step locking device 1 passes through the grille as a whole. The state of the entire device is as shown in FIG. Figure 9 The internal structure of the left step locking device 1 is shown in Fig.10 At this time, the intermediate column sleeve sliding handle 16 is already located at the bottom end of the limiting groove of the bearing column 11, and then the lower fixed latch device 15 is opened, so that the intermediate column sleeve sliding handle 16 cannot move up and down.

[0049] Next, the center column sliding handle 13 is moved upward, and when it reaches the set position, the upper fixed latch device 14 is locked so that the center column sliding handle 13 cannot move up and down, and the left step locking device 1 is locked. Figure 3 At this time, the positioning plate 22 is pressed against the lower surface of the grille, and the sawtooth structure on one side of the positioning plate 22 forms a large friction force with the lower surface of the grille. The locking positioning block 19 makes the contraction plate 20 present a certain angle as shown. Figure 3Specifically, the locking block 19 is fitted with the contact surface of the retractable plate 20, and the retractable plate 20 is subjected to the upward pressure transmitted by the locking block 19. Then, the relevant operations of the left step locking device 1 need to be repeated for the right step locking device 7, and the entire device has been stably fixed on the grille. After being stably fixed, the present invention can be used by workers to perform painting or inspection operations at heights.

[0050] After use or when the rectification device needs to be moved, first, the upper fixed latch device 14 is unlocked so that the central column sliding handle 13 can be moved downward. Fig. 9 As shown, the fixed latch device 15 is then opened so that the central column sliding handle 13 and the intermediate column sleeve sliding handle 16 can move upward at the same time, and when the central column sliding handle 13 and the intermediate column sleeve sliding handle 16 move to the highest position, the retractable latch device 12 and the upper fixed latch device 14 are locked, so that the entire device is retracted as shown. Figure 7 As shown, the entire device can now move freely.

[0051] The present invention assists workers in performing painting operations at higher positions of a vehicle body, and realizes rapid fixation of the step through the telescopic tightening mechanism in the left step locking device 1 and the right step locking device 7, thereby solving the problem that the traditional step cannot be quickly fixed.

[0052] In addition, there are six of each of the retracting plate rotating pin 17, the retracting plate rotating base 18, the locking positioning block 19, the retracting plate 20, the positioning plate rotating pin 21, and the positioning plate 22 in the left step locking device 1. They are connected to form six groups of identical structures, and the six groups of structures are arranged 60 degrees apart with the central axis of the center 24. This allows the six positioning plates 22 to fully contact the lower surface of the grille when locked and fixed. The friction force is increased, and the problem of the step moving is effectively avoided.

[0053] The upper surface of the positioning plate 22 adopts a serrated structure, which further increases the friction between the device and the grille and effectively avoids the problem of platform movement caused by paint accumulation.

[0054] like Figure 4 As shown, the sliding roller device 26 adopts a four-sided pulley centering structure, so that the internal structure of the left step locking device 1 can move up and down smoothly. Figure 5 The floating pulley structure shown enables the intermediate column sleeve 23 and the center column 24 of different cross-sectional sizes to slide up and down in the bearing column 11. The contact surface between the plane and the roller is small and the running resistance is small, which enables the telescopic device to move up and down quickly.

[0055] like Figure 6As shown, the mechanism composed of the rotating gear 37 and the half-rack telescopic pin 38 can quickly realize the locking and unlocking operations, which is fast and convenient, saving the time required for workers to install auxiliary tools and improving the production efficiency of the workshop.

[0056] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A painting and finishing paint station step that can be quickly and stably fixed, characterized in that: It comprises a left step locking device (1), a left structural crossbeam (2), a left supporting leg (3), a left load-bearing crossbeam (4), a load-bearing plate (5), a limiting crossbeam (6), a right step locking device (7), a right structural crossbeam (8), a front load-bearing crossbeam (9) and a right supporting leg (10); The left platform locking device (1) is fixedly connected to the left structural crossbeam (2), the left structural crossbeam (2) is fixedly connected to the left leg (3), the left load-bearing crossbeam (4) is respectively fixedly connected to the left leg (3), the left structural crossbeam (2), the left platform locking device (1) and the load-bearing plate (5), the left platform locking device (1) is fixedly connected to the limiting crossbeam (6) and the front load-bearing crossbeam (9), the limiting crossbeam (6) and the front load-bearing crossbeam (9) are fixedly connected to the right platform locking device (7), the right platform locking device (7) is fixedly connected to the right structural crossbeam (8), and the right leg (10) is fixedly connected to the right structural crossbeam (8).

2. The fast and stable fixable painting work station step according to claim 1 is characterized in that: The left step locking device (1) and the right step locking device (7) are symmetrical structures; the left supporting leg (3) and the right supporting leg (10) are of the same structure; and the left structural crossbeam (2) and the right structural crossbeam (8) are of the same structure.

3. The fast and stable fixable painting work station step according to claim 1 is characterized in that: The left step locking device (1) comprises a bearing column (11), a retractable latch device (12), an upper fixed latch device (14), a lower fixed latch device (15) and a sliding roller device (26) which are respectively fixedly connected to the bearing column (11), a central column sliding handle (13) and an intermediate column sleeve sliding handle (16) are respectively fixedly connected to the central column (24), and the central column sliding handle (13) and the intermediate column sleeve sliding handle (16) can slide in the limiting groove of the bearing column (11); and also comprises a retractable plate rotating pin (17), a locking positioning block (19), a retractable plate (20) and a positioning plate (22) The shrink plate rotating base (18) is fixedly connected to the shrink plate rotating pin (17), the shrink plate rotating pin (17) is connected to the pin hole of the shrink plate (20), the shrink plate (20) can rotate a certain angle along the central axis of the shrink plate rotating pin (17), the locking positioning block (19) is respectively fixedly connected to the central column (24) and the shrink plate rotating base (18), the shrink plate (20) is fixedly connected to the positioning shrink pin (25), the positioning shrink pin (25) is connected to the pin hole of the positioning plate (22), the positioning plate (22) is fixedly connected to the positioning plate rotating pin (21), and the positioning plate rotating pin (21) is connected to the pin hole of the intermediate column sleeve (23).

4. The fast and stable fixable painting work station step according to claim 3 is characterized in that: The retractable plate rotating pin (17), the retractable plate rotating base (18), the locking positioning block (19), the retractable plate (20), the positioning plate rotating pin (21) and the positioning plate (22) are all 6 in number, and are all 6 in number in the left step locking device (1), and are respectively connected to form 6 groups of identical structures, and the 6 groups of structures are arranged 60 degrees apart on the central axis of the central column (24).

5. The fast and stable fixable painting work station step according to claim 3 is characterized in that: There are four sliding roller devices (26), which are respectively fixedly connected to the bearing columns (11); the retractable latch device (12), the upper fixed latch device (14) and the lower fixed latch device (15) have the same structure but different installation positions.

6. The fast and stable fixable painting work station step according to claim 5 is characterized in that: The sliding roller device (26) comprises four sliding roller units (27), which are respectively fixedly connected to the bearing column (11); the rollers (28) of the sliding roller units (27) are fixedly connected to the central positioning pin (29); the sliding limit block (30) is fixedly connected to the support spring (31); the support spring (31) is fixedly connected to the spring limit block (32); the spring limit block (32) is fixedly connected to the roller support base (34); the roller support plate (33) is fixedly connected to the roller support base (34); and the central positioning pin (29) can slide in the limit groove of the roller support plate (33) and is pushed upward by the support spring (31).

7. The fast and stable fixable painting work station step according to claim 6 is characterized by: The sliding limit block (30), the supporting spring (31), the spring limit block (32), and the roller supporting plate (33) are respectively provided in two portions in the sliding roller unit (27) and are symmetrically arranged.

8. The fast and stable fixable painting work station step according to claim 3 is characterized in that: The retractable latch device (12) comprises a latch positioning block (35) which is fixedly connected to the bearing column (11); a latch rotating handle (36) which is connected to a pin hole of the latch positioning block (35); a rotating gear (37) which is fixedly connected to the latch rotating handle (36); and a rotating gear (37) which is connected to a gear rack of a semi-rack telescopic pin (38). The rotation of the latch rotating handle (36) can drive the rotating gear (37) to rotate, thereby causing the semi-rack telescopic pin (38) to telescope to achieve locking and opening.

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