Spraying equipment for inner wall of tower drum

Abstract

The invention provides tower drum inner wall spraying equipment, and belongs to the technical field of tower drum inner wall spraying. The tower drum inner wall spraying equipment comprises a walking unit, a lifting unit is arranged above the walking unit, and a rotary spraying unit is installed at the power output end of the lifting unit; the walking unit comprises a chassis. The front and rear ends of the chassis are provided with a driving wheel set and a driven wheel set respectively. The driving wheel set comprises two driving wheel carriers, each driving wheel carrier is vertically and rotatably provided with a front trundle set, each front trundle set is in transmission connection with a walking driving mechanism, the driven wheel set comprises two driven wheel carriers, and each driven wheel carrier is vertically and rotatably provided with a rear trundle set. The device has the beneficial effects that the angles of the trundle structures can be automatically adjusted, so that the trundle structures can be attached to the inner wall of the tower drum in a large area, and it is guaranteed that equipment runs more stably.

Description

Technical Field

[0001] The invention belongs to the technical field of tower inner wall spraying, and particularly relates to tower inner wall spraying equipment. Background Art

[0002] With the continuous expansion of the wind power industry, the demand for wind turbine towers is increasing day by day. At the same time, it also puts forward higher requirements for the quality and efficiency of the tower inner wall spraying operation.

[0003] Currently, existing tower inner wall spraying devices mainly consist of a traveling section, a lifting section, and a rotating spraying section. The traveling section mainly includes a chassis, drive wheels, and steering wheels, and the driving and steering wheels work together to drive the entire tower inner wall spraying device to move within the wind tower. The lifting section is mostly based on a multi-stage telescopic cylinder, which cooperates with support rails and fixed plates to achieve stable lifting of the rotating spraying section. The rotating drive section mainly includes a rotating telescopic arm and a spray gun. The rotation of the rotating telescopic arm drives the spray gun to achieve efficient spraying.

[0004] However, existing inner wall spraying devices have obvious defects in practical applications. Specifically, since the inner wall of the existing wind turbine tower is not a completely flat plane, but a circular arc surface with a certain slope, the casters of the existing inner wall spraying device only have conventional walking and steering functions, and lack adaptive adjustment capabilities. They cannot tilt and rotate according to the slope changes of the tower inner wall. This results in a small contact area between the casters of the inner wall spraying device and the inner wall of the tower, and it is easy to slip when walking in a cylinder with a large arc, which easily leads to uneven spraying, spray leakage, etc., which greatly affects the spraying quality of the tower inner wall. Summary of the Invention

[0005] The technical problem solved by the present invention is to provide a tower inner wall spraying equipment with adaptive ability, and the casters provided thereon can automatically adjust their own angles to maintain a larger area of ​​fit with the tower inner wall, ensuring that the equipment runs more smoothly and avoids slipping; at the same time, it can adapt to the tower inner wall with different curvatures and slopes, and can move relatively smoothly in towers of different specifications.

[0006] In order to solve the above technical problems, the technical solution provided by the present invention is: a tower inner wall spraying equipment, which includes a walking unit, a lifting unit is arranged above the walking unit, and a rotary spraying unit is installed at the power output end of the lifting unit; the walking unit includes a chassis, and a driving wheel group and a driven wheel group are respectively provided at the front and rear ends of the chassis; the driving wheel group includes two driving wheel frames, each driving wheel frame is vertically rotated and installed with a front caster group, the front caster group is transmission-connected to a walking drive mechanism, and the front caster group can rotate in a vertical plane perpendicular to the walking direction and in a vertical plane parallel to the walking direction; the driven wheel group includes two driven wheel frames, each driven wheel frame is vertically rotated and installed with a rear caster group, and the rear caster group can rotate in a vertical plane perpendicular to the walking direction and in a vertical plane parallel to the walking direction. At this time, since the front caster group and the rear caster group in the present invention can rotate in a vertical plane perpendicular to the walking direction, when it walks in the tower, it can automatically adjust the posture of the front caster group and the rear caster group according to the curvature of the inner wall of the tower, and keep a large area of ​​contact with the inner wall of the tower, thereby ensuring that the entire equipment runs more smoothly in the tower, and then ensuring the spraying quality of the inner wall of the tower.

[0007] Furthermore, the front caster assembly includes two casters 1, which are symmetrically arranged on both sides of the travel drive mechanism; a front wheel axle 1 is fixedly installed in the middle of the two casters 1, the axial direction of the front wheel axle 1 is perpendicular to the travel direction, and the front wheel axle 1 is transmission-connected to the corresponding travel drive mechanism; the front caster assembly also includes two front wheel axles 2, which are symmetrically arranged on both sides of the travel drive mechanism; the axial direction of the front wheel axle 2 is parallel to the travel direction, the separated ends of the two front wheel axles 2 are rotationally connected to the drive wheel frame, and the adjacent ends of the two front wheel axles 2 are fixedly connected to the corresponding travel drive mechanism. At this time, on the one hand, the present invention can transmit power from the travel drive mechanism to the corresponding two casters 1 through the cooperation of the front wheel axle 1 and the travel drive mechanism to control the entire tower inner wall spraying equipment to move forward and backward. On the other hand, the cooperation of the front wheel axle 2 and the drive wheel frame can ensure that the entire front caster assembly can rotate freely in a vertical plane perpendicular to the travel direction to adapt to the curvature of the tower inner wall.

[0008] Furthermore, the rear caster assembly includes an auxiliary frame, the lower portion of which is rotatably mounted two casters (2), and the upper portion of which is fixedly provided with an articulated seat (1). The lower end of the driven wheel frame is provided with an articulated seat (2), which is hingedly connected to the first articulated seat via an articulated axis, with the axis of the articulated axis parallel to the direction of travel. In this manner, the present invention ensures that the entire rear caster assembly can freely rotate within a vertical plane perpendicular to the direction of travel, thereby adapting to the curvature of the tower's inner wall, through the cooperation of the first and second articulated seats.

[0009] Furthermore, springs are provided on both sides of the left and right sides of the articulated seat. The upper end of the spring is fixedly connected to the driven wheel frame, and the lower end of the spring is fixedly connected to the auxiliary frame. The rotation amplitude of the auxiliary frame is controlled by the elastic potential energy of the spring to prevent it from deviating from the predetermined running trajectory due to excessive swing.

[0010] Furthermore, the driving wheel group also includes a steering assembly, which is simultaneously connected to the two driving wheel frames and controls the two driving wheel frames to rotate in the horizontal plane to change the walking direction of the entire tower inner wall spraying equipment.

[0011] Furthermore, the steering assembly includes a steering drive motor installed on the chassis, the power output end of the steering drive motor is transmission-connected to the steering reducer, and the steering reducer is also transmission-connected to two front horizontal transmission rods, one end of the front horizontal transmission rod is transmission-connected to the active reversing gear through the reduction gear box, and the axial direction of the active reversing gear is vertically arranged; the active reversing gear is engaged with the driven reversing gear, and the driven reversing gear is fixedly connected to the corresponding driving wheel frame, and the driving wheel frame or the driven reversing gear is horizontally rotationally installed on the chassis, and can rotate together in the corresponding direction under the action of the steering drive motor to realize the change of the walking direction of the entire tower inner wall spraying equipment.

[0012] Furthermore, the driven wheel assembly also includes a lifting assembly that is simultaneously connected to the two driven wheel frames and controls the vertical lifting of the two driven wheel frames. Thus, when the tower wall spraying device provided by the present invention is traveling within the conical tower, the height of the two rear caster assemblies can be flexibly adjusted via the liftable driven wheel frames to ensure that the chassis remains horizontal, thereby ensuring that the centerline of the rotary spray unit always remains on the centerline of the conical tower.

[0013] Furthermore, the lifting assembly includes a lifting drive motor installed on the chassis, the power output end of the lifting drive motor is transmission-connected to a lifting reducer, and the lifting reducer is simultaneously transmission-connected to two elevators, the two elevators are installed on the chassis, and the power output end of the elevator is fixedly connected to the corresponding driven wheel frame, and can drive the two driven wheel frames to move vertically under the action of the elevator to adjust the height of the two rear caster groups to ensure that the rotation center of the rotary spraying unit is always on the geometric center line of the geometric body, and is in a working state within the vertical cutting surface to improve the paint adhesion.

[0014] Furthermore, a harness storage rack is provided above the travel unit. In this case, during the actual operation of the present invention, the paint lines, gas lines, and power lines connected to the entire tower inner wall spraying device can be wound and stored via the harness storage rack, thereby preventing the paint lines, gas lines, and power lines from becoming entangled or knotted during the travel of the tower inner wall spraying device. Furthermore, after the tower inner wall spraying device completes the spraying operation, the present invention can wind the excess paint lines, gas lines, and power lines around the harness storage rack by rotating the take-up reel in the harness storage rack, thereby facilitating the operator's transport of the entire tower inner wall spraying device.

[0015] It can be seen from the above technical solutions that the present invention has the following advantages: 1. The front caster set and the rear caster set in the present invention can both rotate in a vertical plane perpendicular to the walking direction, that is, the front caster set and the rear caster set in the present invention can automatically adjust their posture according to the curvature of the inner wall of the tower, and fit the inner wall of the tower over a large area, thereby reducing slippage and ensuring the smooth operation of the equipment in the tower, thereby ensuring uniform spraying and improving the spraying quality of the inner wall of the tower; 2. The present invention can accurately control the rotation of the driving wheel frame in the horizontal plane through the steering assembly composed of a steering drive motor, a steering reducer and other components to achieve the steering function of the equipment; 3. The present invention can utilize a lifting assembly composed of a lifting drive motor, a lifting reducer, and an elevator to control the lifting of the driven wheel frame, ensuring that the center line of the rotary spray unit is always maintained at the center of the tower when the equipment moves in the conical tower; 4. The present invention limits the rotation range of the auxiliary frame through springs arranged on both sides of the hinged seat to prevent it from swinging excessively and deviating from the operating trajectory. At the same time, when responding to the ups and downs of the tower wall, it can not only buffer and absorb shock, but also ensure that the driven wheel fits the inner wall, avoiding equipment jamming and overturning, and ensuring operational safety. 5. The present invention can use the wire harness storage rack to effectively wind and store paint lines, gas lines, and power lines to prevent the lines from getting tangled and knotted during operation; at the same time, after the operation is completed, the lines can be tidied through the wire reel, which is convenient for operators to transport the equipment and improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a structural schematic diagram of a specific embodiment of the present invention; Figure 2Schematic diagram of the structure of the walking unit in the present invention; Figure 3 Schematic diagram of the structure of the driving wheel set in the present invention; Figure 4 It is a schematic diagram of the matching structure of the driven wheel frame and the auxiliary frame in the present invention.

[0018] In the figure: 100, travel unit; 200, lifting unit; 300, rotary spray unit; 400, wire harness storage rack; 101, chassis; 102, lift; 103, lift reducer; 104, lift drive motor; 105, travel drive mechanism; 106, steering drive motor; 107, front horizontal transmission rod; 108, reduction gearbox; 109, hinge seat 1; 110, spring; 111, hinge Connector 2; 112, driven wheel frame; 113, caster 2; 114, auxiliary frame; 115, rear caster assembly; 116, driving wheel frame; 117, caster 1; 118, front wheel axle 1; 119, front wheel axle 2; 120, articulated shaft; 121, front caster assembly; 122, driven reversing gear; 123, active reversing gear; 124, steering assembly; 125, lifting assembly; 126, steering reducer. DETAILED DESCRIPTION

[0019] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in this specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this patent.

[0020] like Figure 1 As shown, the present invention provides a tower inner wall spraying equipment, which includes a walking unit 100, and components such as a lifting unit 200, a distribution cabinet, and a wire harness storage rack 400 arranged above the walking unit 100, and a rotary spraying unit 300 is installed at the power output end of the lifting unit 200, and the corresponding tower inner wall spraying operation is achieved through the rotary spraying unit 300.

[0021] like Figure 2 As shown, the walking unit 100 includes a chassis 101, and the front and rear ends of the chassis 101 are respectively provided with a driving wheel set and a driven wheel set. Figure 3As shown, the driving wheel assembly includes two symmetrically arranged driving wheel frames 116, which are arranged below the chassis 101 and adopt a hollow cylindrical structure. At the same time, the present invention also provides a travel drive mechanism 105 in the inner cavity of the driving wheel frame 116, and a front caster assembly 121 is installed at the lower part of the driving wheel frame 116. The front caster assembly 121 is connected to the travel drive mechanism 105 by transmission to drive the front caster assembly 121 to rotate. Specifically, in this embodiment, the front caster assembly 121 includes two casters 117, which are symmetrically arranged on the left and right sides of the travel drive mechanism 105. A front wheel shaft 118 is fixedly installed in the middle of each caster 117. The axial direction of the front wheel shaft 118 is perpendicular to the travel direction. The end of the front wheel shaft 118 is transmission-connected to the corresponding travel drive mechanism 105, and there is a gap between the travel drive mechanism 105 and the driving wheel frame 116. The front caster assembly 121 also includes two front wheel axles 119, which are symmetrically arranged on the front and rear sides of the travel drive mechanism 105, and the axial direction of the front wheel axles 119 is parallel to the travel direction. The separated ends of the two front wheel axles 119 are both rotatably connected to the drive wheel frame 116, and the adjacent ends of the two front wheel axles 119 are both fixedly connected to the corresponding travel drive mechanism 105. In this way, in addition to transmitting power from the travel drive mechanism 105 to the corresponding two casters 117 through the cooperation of the front wheel axle 118 and the travel drive mechanism 105 to control the forward and backward movement of the entire tower inner wall spraying equipment, the present invention can also ensure that the entire front caster assembly 121 can rotate freely in a vertical plane perpendicular to the travel direction through the cooperation of the front wheel axle 119 and the drive wheel frame 116 to adapt to the curvature of the tower inner wall.

[0022] The upper parts of the two driving wheel frames 116 are commonly connected to a steering assembly 124 , and the steering assembly 124 drives the two driving wheel frames 116 to rotate in a horizontal plane. Specifically in this embodiment, the steering assembly 124 includes a steering drive motor 106 installed on the chassis 101, and the power output end of the steering drive motor 106 is transmission-connected to the steering reducer 126. The two power output ends of the steering reducer 126 are simultaneously transmission-connected to two front horizontal transmission rods 107, and one end of the front horizontal transmission rod 107 is transmission-connected to the power output end of the steering reducer 126, and the other end of the front horizontal transmission rod 107 is transmission-connected to the active reversing gear 123 through the reduction box 108, and the axial direction of the active reversing gear 123 is vertically arranged; and the active reversing gear 123 is engaged with a driven reversing gear 122, and the driven reversing gear 122 is fixedly connected to the driving wheel frame 116 on the corresponding side, and the driving wheel frame 116 or the driven reversing gear 122 is horizontally rotatably mounted on the lower surface of the chassis 101 through a bearing. At this time, the present invention can drive the driving wheel frames 116 on both sides to rotate in corresponding directions together under the action of the steering drive motor 106, so as to change the walking direction of the entire tower inner wall spraying equipment.

[0023] like Figure 2 、 Figure 4As shown, the driven wheel assembly includes two symmetrically arranged driven wheel frames 112, and a lifting assembly 125 arranged above the chassis 101. Specifically, in this embodiment, the lifting assembly 125 includes a lifting drive motor 104 installed on the chassis 101, and the power output end of the lifting drive motor 104 is transmission-connected to a lifting reducer 103, and the lifting reducer 103 is simultaneously transmission-connected to two elevators 102. Both elevators 102 preferably adopt screw elevators or worm gear elevators, and the two elevators 102 are installed on the chassis 101. The power output ends of the two elevators 102 are respectively fixedly connected to the corresponding two driven wheel frames 112, and control the two driven wheel frames 112 to rise and fall in the vertical direction. At the same time, the present invention also vertically rotates and installs a rear caster assembly 115 on the two driven wheel frames 112. The rear caster assembly 115 includes an auxiliary frame 114, with an articulated seat 109 fixedly disposed at the middle position of the upper portion of the auxiliary frame 114. An articulated seat 2 111 is disposed at the middle position of the lower end of the driven wheel frame 112. The articulated seat 2 111 and the articulated seat 109 are hingedly connected via an articulated shaft 120, and the axial direction of the articulated shaft 120 is parallel to the direction of travel. Springs 110 are disposed on both the left and right sides of the articulated seat 109. The upper end of the spring 110 is fixedly connected to the driven wheel frame 112, and the lower end of the spring 110 is fixedly connected to the auxiliary frame 114. Two casters 2 113 are rotatably mounted on the lower portion of the auxiliary frame 114. At this point, the present invention can, on the one hand, ensure that the entire rear caster assembly 115 can freely rotate in a vertical plane perpendicular to the direction of travel through the cooperation of the articulated seat 109 and the articulated seat 2 111 to adapt to the curvature of the inner wall of the tower. On the other hand, the height of the two rear caster assemblies 115 can be flexibly adjusted by the liftable driven wheel frame 112 to ensure that the chassis 101 always remains in a horizontal state, thereby ensuring that the center line of the rotary spraying unit 300 always remains on the center line of the conical tower.

[0024] Based on this, when using the present invention to perform tower inner wall spraying operations, on the one hand, the front caster group 121 and the rear caster group 115 in the present invention can automatically adjust their posture according to the curvature of the tower inner wall, and fit closely with the tower inner wall over a large area, thereby reducing slippage and ensuring smooth operation of the equipment in the tower, thereby ensuring uniform spraying and improving the quality of tower inner wall spraying; on the other hand, the present invention can utilize a lifting assembly 125 composed of a lifting drive motor 104, a lifting reducer 103, and a lift 102 to control the lifting of the driven wheel frame 112, ensuring that the center line of the rotary spraying unit 300 is always maintained at the center of the tower when the equipment is moving in the conical tower.

[0025] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tower inner wall spraying device, comprising a walking unit (100), a lifting unit (200) is provided above the walking unit (100), a rotary spraying unit (300) is installed at the power output end of the lifting unit (200); the walking unit (100) comprises a chassis (101), and a driving wheel group and a driven wheel group are provided at the front and rear ends of the chassis (101), respectively; characterized in that, The driving wheel group comprises two driving wheel frames (116), each driving wheel frame (116) is vertically rotatably mounted with a front caster group (121), the front caster group (121) is transmission-connected to a travel drive mechanism (105), and the front caster group (121) can rotate in a vertical plane perpendicular to the travel direction and in a vertical plane parallel to the travel direction; the driven wheel group comprises two driven wheel frames (112), each driven wheel frame (112) is vertically rotatably mounted with a rear caster group (115), and the rear caster group (115) can rotate in a vertical plane perpendicular to the travel direction and in a vertical plane parallel to the travel direction.

2. The tower inner wall spraying equipment according to claim 1, characterized in that: The front caster group (121) includes two caster 1s (117), and the two caster 1s (117) are symmetrically arranged on both sides of the walking drive mechanism (105); a front wheel shaft 1 (118) is fixedly installed in the middle of the two caster 1s (117), the axial direction of the front wheel shaft 1 (118) is perpendicular to the walking direction, and the front wheel shaft 1 (118) is transmission-connected to the corresponding walking drive mechanism (105); the front caster group (121) also includes two front wheel shafts 2 (119), and the two front wheel shafts 2 (119) are symmetrically arranged on both sides of the walking drive mechanism (105); the axial direction of the front wheel shaft 2 (119) is parallel to the walking direction, and the separated ends of the two front wheel shafts 2 (119) are both rotationally connected to the driving wheel frame (116), and the adjacent ends of the two front wheel shafts 2 (119) are both fixedly connected to the corresponding walking drive mechanism (105).

3. The tower inner wall spraying equipment according to claim 1, characterized in that: The rear caster assembly (115) includes an auxiliary frame (114), the lower portion of which is rotatably mounted with two caster wheels (113), and the upper portion of which is fixedly provided with an articulated seat (109); the lower end of the driven wheel frame (112) is provided with an articulated seat (111), the articulated seat (111) and the articulated seat (109) are articulated via an articulated shaft (120), and the axial direction of the articulated shaft (120) is parallel to the walking direction.

4. The tower inner wall spraying equipment according to claim 3, characterized in that: Springs (110) are provided on both the left and right sides of the hinge seat 1 (109), the upper end of the spring (110) is fixedly connected to the driven wheel frame (112), and the lower end of the spring (110) is fixedly connected to the auxiliary frame (114).

5. The tower inner wall spraying equipment according to claim 1, characterized in that: The driving wheel assembly further includes a steering assembly (124), and the steering assembly (124) is simultaneously connected to the two driving wheel frames (116) in a transmission manner.

6. The tower inner wall spraying equipment according to claim 5, characterized in that: The steering assembly (124) includes a steering drive motor (106) mounted on the chassis (101), a power output end of the steering drive motor (106) being transmission-connected to a steering reducer (126), and the steering reducer (126) being transmission-connected to two front horizontal transmission rods (107), one end of the front horizontal transmission rod (107) being transmission-connected to a driving reversing gear (123) through a reduction gear box (108), and the axial direction of the driving reversing gear (123) being vertically arranged; the driving reversing gear (123) is meshed with a driven reversing gear (122), and the driven reversing gear (122) is fixedly connected to a corresponding driving wheel frame (116), and the driving wheel frame (116) or the driven reversing gear (122) is horizontally rotatably mounted on the chassis (101).

7. The tower inner wall spraying equipment according to claim 1, characterized in that: The driven wheel assembly further includes a lifting assembly (125), and the lifting assembly (125) is simultaneously connected to the two driven wheel frames (112) in a transmission manner.

8. The tower inner wall spraying equipment according to claim 7, characterized in that: The lifting assembly (125) includes a lifting drive motor (104) mounted on a chassis (101), a power output end of the lifting drive motor (104) being transmission-connected to a lifting reducer (103), and the lifting reducer (103) being transmission-connected to two lifts (102) at the same time. The two lifts (102) are mounted on the chassis (101), and the power output ends of the lifts (102) are fixedly connected to corresponding driven wheel frames (112).

9. The tower inner wall spraying equipment according to claim 1, characterized in that: A wire harness storage rack (400) is provided above the traveling unit (100).

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