Bridge pier column surface film covering device

Abstract

The invention relates to the technical field of bridge construction, in particular to a bridge pier column surface film covering device which comprises two sets of lifting frames hinged to each other and further comprises a displacement guide structure connected with the lifting frames, the displacement guide structure comprises telescopic linkage parts installed on the lifting frames, the two sets of lifting frames are jointly connected with a set of variable-width rotation guide mechanism, and the variable-width rotation guide mechanism is connected with the telescopic linkage parts. The variable-width rotary guide mechanism is composed of two groups of variable-width guide parts, and the variable-width guide parts are connected with the telescopic linkage part; and the movable film winding mechanism is connected with the variable-width rotary guide mechanism and comprises a movable part connected with the variable-width rotary guide mechanism, a steering height adjusting part is installed at the top of the movable part, and the steering height adjusting part is connected with a film placing part. Through cooperation of the displacement guide structure and the movable film winding mechanism, the pier column plastic film winding device conducts plastic film winding operation on a pier column, the plastic film is attached to the faces, with different heights and different angles, of the pier column, manpower is saved, and the application range is widened.

Description

Technical Field

[0001] The invention relates to the technical field of bridge construction, in particular to a bridge pier surface coating device. Background Art

[0002] A pier is a load-bearing structure used to support the upper structure in civil engineering. The cross-section of a pier is mostly circular, but there are also elliptical, square, curved, parabolic and other special-shaped piers. It is an important component in highway bridges, railway bridges, pedestrian bridges, overpasses, ramp bridges, and flyovers. When maintaining bridge piers, it can be achieved by covering their surface with plastic film.

[0003] At present, when coating the surface of bridge piers, artificial coating is mainly used. Generally speaking, the cross-sections of piers at different heights are the same, but there are also Y-shaped piers, in which the lower half is a column and the upper half is a trapezoidal table structure. As the height increases, the width of the cross-section of the pier will gradually increase, and the upper half of the pier is provided with symmetrically arranged inclined surfaces. Since general bridge pier surface coating devices cannot perform size adjustment operations, bridge pier surface coating devices cannot perform coating operations on the upper half of the Y-shaped piers, and their applicability is limited. Summary of the invention

[0004] The object of the present invention is to provide a bridge pier surface coating device to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A bridge pier surface coating device comprises two sets of mutually hinged hanging frames, and also comprises: A displacement guide structure connected to the hanging frame, the displacement guide structure includes a telescopic linkage part installed on the hanging frame, two sets of hanging frames are commonly connected to a set of variable width rotary guide mechanism, the variable width rotary guide mechanism is jointly composed of two sets of variable width guide parts respectively installed on the two sets of hanging frames, and the variable width guide part is connected to the telescopic linkage part; A mobile wrapping film mechanism connected to the variable width rotary guide mechanism, the mobile wrapping film mechanism includes a moving part connected to the variable width rotary guide mechanism, and the moving trajectory of the moving part is adjusted by adjusting its own structure through the variable width rotary guide mechanism, a steering height adjustment part is installed on the top of the moving part, and the steering height adjustment part is connected to the film placing part.

[0006] As a further improvement scheme of the present invention: the telescopic linkage part includes two groups of first active telescopic rods fixedly connected to the lifting frame, the movable ends of the first active telescopic rods are fixedly connected with a first pair of joints, the two groups of first pairs of joints contacting each other are connected with two groups of variable width guide parts through a group of pin rods, and two groups of pin bodies are movably installed on the pin rods, and the pin bodies are slidably connected with the variable width guide parts.

[0007] As a further improvement scheme of the present invention: the variable width guide part includes a carrier plate movably connected to the hanging frame, the carrier plate is fixedly connected to multiple groups of hook frames, each group of hook frames is connected to a bolt threadedly connected to the hanging frame, two groups of through grooves are opened on the hook frame, the carrier plate is fixedly connected to a T-shaped plate, the T-shaped plate has contour tracks symmetrically arranged on both sides, the contour tracks are slidably connected to the carrier plate, the contour tracks are fixedly connected to a support plate slidably connected to the carrier plate, the support plate is fixedly connected to a second pair of joints movably connected to the pin rod, the second pair of joints are slidably connected to the pin body, the four groups of contour tracks and two groups of T-shaped plates together constitute a frame for providing mobile guide for the mobile winding film mechanism.

[0008] As a further improvement scheme of the present invention: the moving part includes a frame slidably connected to the frame, the frame is rotatably connected to a first roller abutting the frame, the frame is fixedly connected to a first motor, the output end of the first motor is fixedly connected to a screw rod, the screw rod is threadedly connected to a motor seat slidably connected to the frame, the motor seat is fixedly connected to a second motor, the output end of the second motor is fixedly connected to a driving wheel, the driving wheel abuts against the outer wall of the frame, the frame is rotatably connected to multiple sets of casters, the casters are in contact with the carrier plate, and the frame is connected to the steering height adjustment part.

[0009] As a further improvement scheme of the present invention: the steering height adjustment part includes a base fixedly connected to the frame, the base is fixedly connected to two groups of parallel guide rods, the base is fixedly connected to a threaded rod, the extension direction of the threaded rod is the same as the extension direction of the guide rod, the two groups of guide rods are slidably connected to a group of shells, the shell is fixedly connected to a third motor, the output shaft of the third motor is fixedly connected to a gear, the gear is meshingly connected to a gear ring, the gear ring is fixedly connected to a threaded sleeve rotatably connected to the shell, the threaded sleeve is threadedly connected to the threaded rod, the threaded sleeve is rotatably installed in the shell, the shell is hinged with a second active telescopic rod, the moving end of the second active telescopic rod is hinged with a rotating frame hinged with the shell, the rotating frame is fixedly connected to a fourth motor, the output shaft of the fourth motor is fixedly connected to a synchronous frame, and the synchronous frame is connected to the film release part.

[0010] As a further improvement of the present invention: the film releasing part includes a fifth motor fixedly connected to the synchronous frame, the protruding end of the output shaft of the fifth motor is connected to the concave shaft through a hexagon socket bolt, the protruding end of the output shaft of the fifth motor is fixedly connected to two groups of symmetrically arranged pressure sensors, the pressure sensors are in contact with the concave shaft, and the concave shaft is coaxially fixedly connected to a film roller.

[0011] As a further improvement of the present invention: the synchronous frame is rotatably connected to the rotating frame.

[0012] Compared with the prior art, the present invention has the following beneficial effects: When in use, a crane is used to lift the hoisting frame to the pier and place the hoisting frame on the ground, and then an external crane is used to lift two sets of variable width guide parts matching the shape of the pier to the two sets of hoisting frames respectively, so that each set of hoisting frames is installed with a set of variable width guide parts, and then the two sets of hoisting frames are approached to each other under the driving of the hoisting frames by the crane, and then a double-headed screw is used to pass through the hoisting frames and locking nuts are installed at both ends of the double-headed screw. Under the squeezing of the locking nut on the hoisting frames, the two sets of hoisting frames are abutted against each other, and under the driving of the hoisting frames, the two sets of variable width guide parts are docked, so that the two sets of variable width guide parts together constitute a set of variable width rotary guide mechanisms, and then the telescopic linkage part is connected with the variable width guide part, so that the telescopic linkage part drives the variable width guide part to adjust the width. The end of the plastic film released by the film releasing part is adhered to the outer surface of the pier, and the moving part is installed on the widening rotary guide mechanism so that the moving part can move along the widening rotary guide mechanism. At this time, the moving trajectory of the moving part matches the shape of the pier, and the steering height adjustment part adjusts the height and inclination angle of the film releasing part. The moving part drives the steering height adjustment part to move, thereby driving the film releasing part to move, so that the film releasing part releases the plastic film around the pier. At this time, the plastic film is wrapped around the outer surface of the pier from bottom to top, and when the upper part of the pier is a trapezoidal structure, the telescopic linkage part drives the widening guide part to adjust the structure of the widening guide part. At this time, the moving part moves along the widening rotary guide mechanism, and the width of the moving trajectory increases, and the steering height adjustment part adjusts the inclination angle of the film releasing part, so that the angle of the released plastic film matches the inclined surface on the pier. The present invention cooperates with the displacement guide structure and the mobile wrapping film mechanism to enable the present invention to wrap the plastic film on the pier column. The present invention adjusts the displacement guide structure to adjust the trajectory of the mobile wrapping film mechanism releasing the plastic film, so that the plastic film can fit the surfaces of the pier column at different heights and different angles, thereby saving manpower and improving the scope of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 A schematic diagram of a three-dimensional structure from another viewing angle of the present invention; Figure 3 For the present invention Figure 2 A local enlarged schematic diagram of the middle A; Figure 4 For the present invention Figure 2 A partial enlarged schematic diagram of point B in the middle; Figure 5 It is a schematic diagram of the three-dimensional structure of the steering height adjustment part and the film placing part of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the T-shaped plate and the contoured track of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the moving part of the present invention; Figure 8 A schematic diagram of the three-dimensional structure of the moving part of the present invention from another perspective; Fig. 9 It is a schematic diagram of the three-dimensional structure of the housing, the third motor, the gear, the gear ring and the threaded sleeve of the present invention.

[0014] In the figure: 1, hoisting frame; 2, displacement guide structure; 3, telescopic linkage part; 4, variable width rotary guide mechanism; 5, variable width guide part; 6, mobile winding film mechanism; 7, moving part; 8, steering height adjustment part; 9, film placing part; 10, first active telescopic rod; 11, first pair of joints; 12, pin rod; 13, pin body; 14, carrier plate; 15, hook frame; 16, through groove; 17, T-shaped plate; 18, contoured track; 19, support plate; 20, second pair of joints; 21, frame; 22, rack ; 23. First roller; 24. First motor; 25. Screw; 26. Motor seat; 27. Second motor; 28. Driving wheel; 29. ​​Caster; 30. Base; 31. Guide rod; 32. Threaded rod; 33. Shell; 34. Third motor; 35. Gear; 36. Gear ring; 37. Threaded sleeve; 38. Second active telescopic rod; 39. Fourth motor; 40. Synchronous frame; 41. Fifth motor; 42. Concave shaft; 43. Pressure sensor; 44. Film roller; 45. Rotating frame. DETAILED DESCRIPTION

[0015] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0016] Example 1, see Figures 1 to 9 As shown, a bridge pier surface coating device includes two sets of mutually hinged hanging frames 1, a plurality of hanging points are arranged on the hanging frames 1, the two sets of hanging frames 1 are commonly connected with a set of double-headed screws, and two sets of locking nuts are symmetrically installed on the double-headed screws, and also includes: A displacement guide structure 2 connected to the hanging frame 1, the displacement guide structure 2 includes a telescopic linkage part 3 installed on the hanging frame 1, two sets of hanging frames 1 are commonly connected to a set of variable width rotary guide mechanism 4, the variable width rotary guide mechanism 4 is jointly composed of two sets of variable width guide parts 5 respectively installed on the two sets of hanging frames 1, and the variable width guide part 5 is connected to the telescopic linkage part 3; The mobile wrapping film mechanism 6 is connected to the widening rotary guide mechanism 4, and the mobile wrapping film mechanism 6 includes a moving part 7 connected to the widening rotary guide mechanism 4. The moving trajectory of the moving part 7 is adjusted by adjusting its own structure through the widening rotary guide mechanism 4. A steering height adjustment part 8 is installed on the top of the moving part 7. The steering height adjustment part 8 is connected to a film releasing part 9, and the film releasing part 9 is used to release the plastic film.

[0017] When in use, a crane is used to lift the hanging frame 1 to the pier and place the hanging frame 1 on the ground, and then an external crane is used to lift two sets of variable width guide parts 5 matching the shape of the pier to the two sets of hanging frames 1 respectively, so that each set of hanging frames 1 is installed with a set of variable width guide parts 5, and then the two sets of hanging frames 1 are approached to each other under the driving of the hanging frame 1 by the crane, and then a double-headed screw is used to pass through the hanging frame 1 and locking nuts are installed at both ends of the double-headed screw, and under the squeezing of the locking nut on the hanging frame 1, the two sets of hanging frames 1 are abutted against each other, and under the driving of the hanging frame 1, the two sets of variable width guide parts 5 are docked, so that the two sets of variable width guide parts 5 together constitute a set of variable width rotary guide mechanism 4, and then the telescopic linkage part 3 is connected with the variable width guide part 5, so that the telescopic linkage part 3 drives the variable width guide part 5 to adjust the width. The end of the plastic film released by the film releasing part 9 is adhered to the outer surface of the pier, and the moving part 7 is installed on the widening rotary guide mechanism 4 so that the moving part 7 can move along the widening rotary guide mechanism 4. At this time, the moving trajectory of the moving part 7 matches the shape of the pier, and the turning height adjustment part 8 adjusts the height and inclination angle of the film releasing part 9. The moving part 7 drives the turning height adjustment part 8 to move, thereby driving the film releasing part 9 to move, so that the film releasing part 9 releases the plastic film around the pier. At this time, the plastic film is wrapped around the outer surface of the pier from bottom to top, and when the upper part of the pier is a trapezoidal structure, the telescopic linkage part 3 drives the widening guide part 5 to adjust the structure of the widening guide part 5. At this time, the moving part 7 moves along the widening rotary guide mechanism 4, and the width of the moving trajectory increases, and the turning height adjustment part 8 adjusts the inclination angle of the film releasing part 9, so that the angle of the released plastic film matches the inclined surface on the pier. The present invention cooperates with the displacement guide structure 2 and the mobile wrapping film mechanism 6 to enable the present invention to wrap the plastic film on the pier. The present invention adjusts the displacement guide structure 2 to adjust the trajectory of the mobile wrapping film mechanism 6 for releasing the plastic film, so that the plastic film can fit the surfaces of the pier at different heights and angles, thereby saving manpower and improving the scope of application.

[0018] In one case of the present embodiment, the telescopic linkage part 3 includes two groups of first active telescopic rods 10 fixedly connected to the hanging frame 1, and the two groups of first active telescopic rods 10 in the same telescopic linkage part 3 are installed on the same hanging frame 1, and the movable end of the first active telescopic rod 10 is fixedly connected with a first pair of joints 11, and the two groups of first pairs of joints 11 contacting each other are connected with two groups of variable width guide parts 5 through a group of pins 12, and two groups of pin bodies 13 are movably installed on the pins 12, and the pin bodies 13 are slidably connected with the variable width guide parts 5. The first active telescopic rod 10 drives the first pair of joints 11 to move, and the first pair of joints 11 drives the variable width guide part 5 to perform deformation operation through the pins 12, and the pins 12 are used to connect the first pair of joints 11 and the variable width guide part 5, and the position of the pins 12 on the first pair of joints 11 is limited by inserting the pins 13 into the pins 12.

[0019] In one case of the present embodiment, the variable-width guide portion 5 includes a carrier plate 14 movably connected to the lifting frame 1, the carrier plate 14 is fixedly connected to multiple groups of hook frames 15, each group of hook frames 15 is connected to a bolt threadedly connected to the lifting frame 1, and two groups of through grooves 16 are opened on the hook frames 15. By setting the through grooves 16, it is convenient for a crane to move the variable-width guide portion 5 by lifting the through grooves 16 through the ropes. The carrier plate 14 is fixedly connected to a T-shaped plate 17, and contoured rails 18 are symmetrically arranged on both sides of the T-shaped plate 17. The contoured rails 18 are slidably connected to the carrier plate 14, and the contoured rails 18 are fixedly connected to a support plate 19 slidably connected to the carrier plate 14. The support plate 19 is fixedly connected to a second pair of joints 20 movably connected to the pin rod 12, and the second pair of joints 20 are slidably connected to the pin body 13. The four groups of contoured rails 18 and the two groups of T-shaped plates 17 together constitute a frame 21 for providing a movable guide for the mobile winding film mechanism 6. The pin rod 12 drives the second pair of joints 20 to move, and the second pair of joints 20 drives the support plate 19 to move. The moving support plate 19 drives the contoured track 18 away from the T-shaped plate 17, thereby increasing the width of the frame 21. As the width of the frame 21 increases, the width of the moving track of the moving part 7 moving along the frame 21 increases.

[0020] In one case of the present embodiment, the moving part 7 includes a frame 22 slidably connected to a frame body 21, the frame 22 is rotatably connected to a first roller 23 abutting against an inner wall of the frame body 21, the frame 22 is fixedly connected to a first motor 24, the output end of the first motor 24 is fixedly connected to a screw rod 25, the screw rod 25 is threadedly connected to a motor seat 26 slidably connected to the frame 22, the motor seat 26 is fixedly connected to a second motor 27, the output end of the second motor 27 is fixedly connected to a driving wheel 28, the driving wheel 28 abuts against an outer wall of the frame body 21, the frame 22 is rotatably connected to a plurality of sets of casters 29, the casters 29 are in contact with a carrier plate 14, and the frame 22 is connected to the steering height adjustment part 8. The frame 22 is placed on the frame 21, and when the first motor 24 drives the screw rod 25 to rotate, the rotating screw rod 25 drives the motor seat 26 to slide along the frame 22, and the motor seat 26 drives the second motor 27 to move, so that the driving wheel 28 abuts against the outer wall of the frame 21. At this time, when the second motor 27 applies torque to the driving wheel 28, the driving wheel 28 and the first roller 23 both roll on the frame 21, so that the frame 22 moves, and the frame 22 drives the steering height adjustment part 8 to move. During this period, the caster 29 provides support for the frame 22, and the support plate 19 is used to support the caster 29. Provide support to prevent the caster 29 from falling into the groove of the carrier plate 14. When the profiling track 18 is away from the T-shaped plate 17, there is a gap between the profiling track 18 and the T-shaped plate 17. If the lower half of the driving wheel 28 is close to the gap and cannot contact the profiling track 18 and the T-shaped plate 17, the upper half of the driving wheel 28 is in contact with the T-shaped plate 17. If the upper half of the driving wheel 28 is close to the gap and cannot contact the profiling track 18 and the T-shaped plate 17, the lower half of the driving wheel 28 is in contact with the profiling track 18, thereby ensuring that the moving part 7 always moves along the frame 21.

[0021] In one case of the present embodiment, the steering height adjustment part 8 includes a base 30 fixedly connected to the frame 22, the base 30 is fixedly connected with two groups of parallel guide rods 31, the base 30 is fixedly connected with a threaded rod 32, the extension direction of the threaded rod 32 is the same as the extension direction of the guide rod 31, the two groups of guide rods 31 are slidably connected with a group of shells 33, the shell 33 is fixedly connected with a third motor 34, the output shaft of the third motor 34 is fixedly connected with a gear 35, the gear 35 is meshingly connected with a gear ring 36, the gear ring 36 is fixedly connected with a threaded sleeve 37 rotatably connected to the shell 33, the threaded sleeve 37 is threadedly connected to the threaded rod 32, and the threaded sleeve 37 is rotatably installed in the shell 33, the shell 33 is hinged with a second active telescopic rod 38, the moving end of the second active telescopic rod 38 is hinged with a rotating frame 45 hinged with the shell 33, the rotating frame 45 is fixedly connected with a fourth motor 39, the output shaft of the fourth motor 39 is fixedly connected with a synchronous frame 40, and the synchronous frame 40 is connected to the film placing part 9. The third motor 34 drives the gear 35 to rotate, and the rotating gear 35 drives the gear ring 36 to make the threaded sleeve 37 rotate helically along the threaded rod 32, so that the shell 33 moves along the guide rod 31, and the shell 33 drives the rotating frame 45 to move longitudinally. The second active telescopic rod 38 drives the rotating frame 45 to rotate to adjust the angle of the fourth motor 39. The fourth motor 39 drives the film placing part 9 to rotate with the rotating frame 45 through the synchronous frame 40, and the fourth motor 39 drives the synchronous frame 40 to rotate, so that the synchronous frame 40 drives the film placing part 9 to rotate a certain angle around the axis of the output shaft of the fourth motor 39.

[0022] In one case of the present embodiment, the film placing part 9 includes a fifth motor 41 fixedly connected to the synchronous frame 40, the protruding end of the output shaft of the fifth motor 41 is connected to the inner concave shaft 42 through a hexagon socket bolt, and the protruding end of the output shaft of the fifth motor 41 is fixedly connected to two groups of symmetrically arranged pressure sensors 43, the pressure sensors 43 are in contact with the inner concave shaft 42, and the inner concave shaft 42 is coaxially fixedly connected to the film roller 44. The fifth motor 41 drives the inner concave shaft 42 to rotate, and the inner concave shaft 42 drives the film roller 44 to rotate, so that the film roller 44 releases the plastic film wound on the film roller 44, during which the pressure sensor 43 measures the feedback pressure, and the data measured by the pressure sensor 43 is analyzed by the computer for remote control to analyze the tightness of the plastic film winding, and the greater the pressure feedback from the pressure sensor 43, the higher the tightness of the plastic film.

[0023] Embodiment 2, based on embodiment 1, refer to Figure 5 The synchronous frame 40 is rotatably connected to the rotating frame 45. The rotating frame 45 is used to provide rotation support for the synchronous frame 40 to prevent the synchronous frame 40 from bending.

[0024] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A bridge pier surface coating device, comprising two sets of mutually hinged hanging frames, characterized in that: Also includes: A displacement guide structure connected to the hanging frame, the displacement guide structure includes a telescopic linkage part installed on the hanging frame, two sets of hanging frames are commonly connected to a set of variable width rotary guide mechanism, the variable width rotary guide mechanism is jointly composed of two sets of variable width guide parts respectively installed on the two sets of hanging frames, and the variable width guide part is connected to the telescopic linkage part; A mobile wrapping film mechanism connected to the variable width rotary guide mechanism, the mobile wrapping film mechanism includes a moving part connected to the variable width rotary guide mechanism, and the moving trajectory of the moving part is adjusted by adjusting its own structure through the variable width rotary guide mechanism, a steering height adjustment part is installed on the top of the moving part, and the steering height adjustment part is connected to the film placing part.

2. A bridge pier surface coating device according to claim 1, characterized in that: The telescopic linkage part includes two groups of first active telescopic rods fixedly connected to the lifting frame, the movable ends of the first active telescopic rods are fixedly connected to a first pair of joints, the two groups of first pairs of joints that are in contact with each other are connected to two groups of variable width guide parts through a group of pin rods, and two groups of pin bodies are movably installed on the pin rods, and the pin bodies are slidably connected to the variable width guide parts.

3. A bridge pier surface coating device according to claim 2, characterized in that: The variable width guide portion includes a carrier plate movably connected to a hanging frame, the carrier plate is fixedly connected to a plurality of hook frames, each group of hook frames is connected to a bolt threadedly connected to the hanging frame, two groups of through grooves are provided on the hook frames, the carrier plate is fixedly connected to a T-shaped plate, contoured tracks are symmetrically provided on both sides of the T-shaped plate, the contoured tracks are slidably connected to the carrier plate, the contoured tracks are fixedly connected to a support plate slidably connected to the carrier plate, the support plate is fixedly connected to a second pair of joints movably connected to the pin rod, the second pair of joints are slidably connected to the pin body, the four groups of contoured tracks and the two groups of T-shaped plates together constitute a frame for providing a movable guide for the mobile winding film mechanism.

4. A bridge pier surface coating device according to claim 3, characterized in that: The moving part includes a frame slidably connected to the frame, the frame is rotatably connected to a first roller abutting the frame, the frame is fixedly connected to a first motor, the output end of the first motor is fixedly connected to a screw rod, the screw rod is threadedly connected to a motor seat slidably connected to the frame, the motor seat is fixedly connected to a second motor, the output end of the second motor is fixedly connected to a driving wheel, the driving wheel abuts against the outer wall of the frame, the frame is rotatably connected to a plurality of sets of casters, the casters are in contact with a carrier plate, and the frame is connected to the steering height adjustment part.

5. A bridge pier surface coating device according to claim 4, characterized in that: The steering height adjustment part includes a base fixedly connected to the frame, the base is fixedly connected to two groups of parallel guide rods, the base is fixedly connected to a threaded rod, the extension direction of the threaded rod is the same as the extension direction of the guide rod, the two groups of guide rods are slidably connected to a group of shells, the shell is fixedly connected to a third motor, the output shaft of the third motor is fixedly connected to a gear, the gear is meshingly connected to a gear ring, the gear ring is fixedly connected to a threaded sleeve rotatably connected to the shell, the threaded sleeve is threadedly connected to the threaded rod, the threaded sleeve is rotatably installed in the shell, the shell is hinged with a second active telescopic rod, the moving end of the second active telescopic rod is hinged with a rotating frame hinged with the shell, the rotating frame is fixedly connected to a fourth motor, the output shaft of the fourth motor is fixedly connected to a synchronous frame, and the synchronous frame is connected to the film release part.

6. A bridge pier surface coating device according to claim 5, characterized in that: The film releasing part includes a fifth motor fixedly connected to the synchronous frame, the protruding end of the output shaft of the fifth motor is connected to the concave shaft via a hexagon socket bolt, the protruding end of the output shaft of the fifth motor is fixedly connected to two groups of symmetrically arranged pressure sensors, the pressure sensors are in contact with the concave shaft, and the concave shaft is coaxially fixedly connected to a film roller.

7. The bridge pier surface coating device according to claim 5, characterized in that: The synchronous frame is rotatably connected to the rotating frame.

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