A mobile base for a tower inner wall spraying device

Abstract

The utility model provides a kind of mobile base for tower drum inner wall spraying equipment belongs to tower drum inner wall spraying technical field, it includes chassis, and the front and rear ends of chassis are respectively provided with driving wheel group and driven wheel group;Driving wheel group includes two driving wheel frames, and each driving wheel frame is vertically rotatably installed with front caster group, and front caster group is drivingly connected with walking driving mechanism, and the driven wheel group includes two driven wheel frames, and each driven wheel frame is vertically rotatably installed with rear caster group.The utility model has the beneficial effect that the rear caster group structure it is provided with can be flexibly adjusted height, to ensure that the center line of rotary spraying part is always aligned with the center line of tower drum.

Description

Technical Field

[0001] This utility model belongs to the field of tower inner wall spraying technology, specifically relating to a mobile base for tower inner wall spraying equipment. Background Technology

[0002] With the continuous expansion of the wind power industry, the demand for wind turbine towers is increasing daily. At the same time, this also places higher demands on the quality and efficiency of the spraying operations on the inner walls of the towers.

[0003] Currently, existing tower inner wall spraying devices mainly consist of a traveling section, a lifting section, and a rotary spraying section. The traveling section primarily includes a chassis, drive wheels, and steering wheels, which work together to move the entire tower inner wall spraying device inside the wind turbine tower. The lifting section mostly uses multi-stage telescopic cylinders as its core, along with support rails and fixed plates, to stably lift the rotary spraying section. The rotary drive section mainly includes a rotary telescopic boom and a spray gun, and the rotation of the telescopic boom drives the spray gun to achieve efficient spraying.

[0004] However, existing internal wall spraying devices have significant shortcomings in practical applications. Specifically, since most existing wind turbine towers are conical, the current internal wall spraying devices only have conventional walking and turning functions and lack height adjustment capabilities, making it impossible to adjust according to changes in the slope of the tower's inner wall. This leads to tilting issues in the chassis and rotating spraying unit of the internal wall spraying device, easily resulting in uneven spraying, missed areas, and other problems, greatly affecting the spraying quality of the tower's inner wall. Utility Model Content

[0005] The technical problem solved by this utility model is to provide a mobile base for a tower inner wall spraying equipment with adaptive capability, and to enable the casters on which it is set to adjust its own height so as to ensure that the center line of the rotating spraying unit always stays on the center line of the conical tower.

[0006] To solve the aforementioned technical problems, the present invention provides a mobile base for a tower inner wall spraying device, comprising a chassis, with drive wheel sets and driven wheel sets respectively arranged at the front and rear ends of the chassis; the drive wheel set includes two drive wheel frames, each drive wheel frame having a front caster wheel set vertically rotatably mounted thereon, and the front caster wheel set being driven by a walking drive mechanism; the driven wheel set includes two driven wheel frames, each driven wheel frame having a rear caster wheel set vertically rotatably mounted thereon; the driven wheel set also includes a lifting assembly, which is simultaneously driven by the two driven wheel frames and controls the vertical lifting and lowering of the two driven wheel frames. Thus, when the mobile base for the tower inner wall spraying device provided by the present invention moves inside a conical tower, the height of the two rear caster wheel sets can be flexibly adjusted through the liftable driven wheel frames to ensure that the chassis always remains horizontal, thereby ensuring that the centerline of the rotating spraying unit always remains on the centerline of the conical tower.

[0007] Furthermore, the lifting assembly includes a lifting drive motor mounted on the chassis. The power output end of the lifting drive motor is connected to a lifting reducer, which is simultaneously connected to two lifting machines. The two lifting machines are mounted on the chassis, and the power output ends of the lifting machines are fixedly connected to the corresponding driven wheel frames. Under the action of the lifting machines, the two driven wheel frames can be driven to move vertically to adjust the height of the two rear caster sets. This ensures that the rotation center of the rotary spraying unit mounted above the mobile base of the spraying equipment on the inner wall of the tower is always on the geometric center line of the geometric body and is in working condition within the vertical cutting plane, thereby improving paint adhesion.

[0008] Furthermore, the rear caster assembly includes an auxiliary frame, with two casters rotatably mounted on the lower part of the auxiliary frame, and a hinge seat fixedly installed on the upper part of the auxiliary frame; a hinge seat is also provided at the lower end of the driven wheel frame, and the hinge seat and hinge seat are hinged together by a hinge shaft, with the axis of the hinge shaft parallel to the direction of travel. In this way, the present invention can ensure that the entire rear caster assembly can rotate freely in a vertical plane perpendicular to the direction of travel through the cooperation of hinge seat one and hinge seat two, thus adapting to the curvature of the tower's inner wall.

[0009] Furthermore, springs are provided on both the left and right sides of the hinge 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 swinging.

[0010] Furthermore, the front caster assembly includes two casters, symmetrically arranged on both sides of the travel drive mechanism. A front axle is fixedly mounted in the middle of each caster, with its axis perpendicular to the travel direction. The front axle is connected to the corresponding travel drive mechanism. The front caster assembly also includes two front axles, symmetrically arranged on both sides of the travel drive mechanism. The axis of the front axles is parallel to the travel direction. The ends of the two front axles, separated by a distance, are rotatably connected to the drive wheel frame, while the ends of the two front axles, close to each other, are fixedly connected to the corresponding travel drive mechanism. In this way, the present invention, on the one hand, can transmit power from the travel drive mechanism to the corresponding two casters through the cooperation of the front axles and the travel drive mechanism, thereby controlling the forward and backward movement of the moving base of the entire tower inner wall spraying equipment. On the other hand, the cooperation of the front axles and the drive wheel frame ensures that the entire front caster assembly can rotate freely in a vertical plane perpendicular to the travel direction, adapting to the curvature of the tower inner wall.

[0011] Furthermore, the drive wheel assembly also includes a steering component, which is simultaneously connected to the two drive wheel frames and controls the two drive wheel frames to rotate in the horizontal plane, thereby changing the travel direction of the mobile base of the entire tower inner wall spraying equipment.

[0012] Furthermore, the steering assembly includes a steering drive motor mounted on the chassis. The power output end of the steering drive motor is connected to a steering reducer, which is also connected to two front horizontal transmission rods. One end of each front horizontal transmission rod is connected to a driving reversing gear via a reduction gearbox. The driving reversing gear is vertically oriented. The driving reversing gear meshes with a driven reversing gear, which is fixedly connected to a corresponding drive wheel frame. The drive wheel frame or the driven reversing gear is horizontally rotatably mounted on the chassis and can rotate together in the corresponding direction under the action of the steering drive motor, thereby changing the travel direction of the mobile base of the entire tower inner wall spraying equipment.

[0013] As can be seen from the above technical solutions, this utility model has the following advantages:

[0014] 1. This utility model can use a lifting assembly composed of a lifting drive motor, a lifting reducer and a lifting machine to control the lifting of the driven wheel frame, so as to ensure that the center line of the rotating spraying unit is always in the center of the tower when the equipment moves inside the conical tower.

[0015] 2. This utility model limits the rotation range of the auxiliary frame by springs set on both sides of the hinge seat to prevent it from swinging excessively and deviating from the running track; at the same time, when dealing with the undulations of the inner wall of the tower, it can both buffer and reduce shock, and ensure that the driven wheel is in contact with the inner wall, so as to avoid equipment jamming and overturning, and ensure operational safety.

[0016] 3. Both the front and rear caster sets in this utility model can rotate in a vertical plane perpendicular to the direction of travel. That is, both the front and rear caster sets in this utility model can automatically adjust their posture according to the curvature of the inner wall of the tower and fit against the inner wall of the tower over a large area, thereby reducing slippage and ensuring that the equipment runs smoothly inside the tower, thus ensuring uniform spraying and improving the spraying quality of the inner wall of the tower.

[0017] 4. This utility model can precisely control the rotation of the drive wheel frame on the horizontal plane through a steering assembly composed of components such as a steering drive motor and a steering reducer, thereby realizing the steering function of the equipment. Attached Figure Description

[0018] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of the drive wheel assembly in this utility model.

[0021] In the diagram: 101, chassis; 102, lifting platform; 103, lifting reducer; 104, lifting drive motor; 105, walking drive mechanism; 106, steering drive motor; 107, front horizontal transmission rod; 108, gearbox; 109, hinge seat one; 110, spring; 111, hinge seat two; 112, driven wheel frame; 113, caster two; 114, auxiliary frame; 115, rear caster set; 116, drive wheel frame; 117, caster one; 118, front axle one; 119, front axle two; 120, hinge shaft; 121, front caster set; 122, driven reversing gear; 123, driving reversing gear; 124, steering assembly; 125, lifting assembly; 126, steering reducer. Detailed Implementation

[0022] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0023] like Figure 1As shown, this utility model provides a mobile base for a tower inner wall spraying equipment, which includes a chassis 101 and drive wheel sets and driven wheel sets disposed at the front and rear ends of the chassis 101.

[0024] Among them, such as Figure 1 As shown, the driven wheel assembly includes two symmetrically arranged driven wheel frames 112 and a lifting assembly 125 disposed above the chassis 101. Specifically, in this embodiment, the lifting assembly 125 includes a lifting drive motor 104 mounted on the chassis 101. The power output end of the lifting drive motor 104 is driven by a lifting reducer 103. The lifting reducer 103 is simultaneously driven by two lifting machines 102. Both lifting machines 102 are preferably screw jacks or worm gear jacks. The two lifting machines 102 are mounted on the chassis 101, and the power output ends of the two lifting machines 102 are respectively fixedly connected to the corresponding two driven wheel frames 112, controlling the two driven wheel frames 112 to rise and fall in the vertical direction.

[0025] Meanwhile, this utility model also vertically and rotatably mounts rear caster sets 115 at two driven wheel frames 112. The rear caster sets 115 include an auxiliary frame 114, with a hinge seat 109 fixedly mounted at the upper middle position of the auxiliary frame 114, and a hinge seat 211 mounted at the lower middle position of the driven wheel frame 112. The hinge seat 211 and the hinge seat 109 are hinged together by a hinge shaft 120, the axis of which is parallel to the direction of travel. Springs 110 are mounted on both sides of the hinge seat 109, the upper end of which is fixedly connected to the driven wheel frame 112, and the lower end of which is fixedly connected to the auxiliary frame 114. Two casters 213 are rotatably mounted on the lower part of the auxiliary frame 114.

[0026] At this point, the present invention, on the one hand, can ensure that the entire rear caster assembly 115 can rotate freely in a vertical plane perpendicular to the walking direction through the cooperation of hinge seat one 109 and hinge seat two 111, so as 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 through 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.

[0027] like Figure 2As shown, the drive wheel assembly includes two symmetrically arranged drive wheel frames 116, which are located below the chassis 101 and have a hollow cylindrical structure. Furthermore, this invention also includes a walking drive mechanism 105 within the inner cavity of each drive wheel frame 116. A front wheel assembly 121 is mounted on the lower part of the drive wheel frame 116, and the front wheel assembly 121 is connected to the walking drive mechanism 105 for driving the front wheel assembly 121 to rotate. Specifically, in this embodiment, the front caster set 121 includes two casters 117, which are symmetrically arranged on the left and right sides of the walking drive mechanism 105. A front wheel axle 118 is fixedly installed in the middle of each of the two casters 117. The axial direction of the front wheel axle 118 is perpendicular to the walking direction. The end of the front wheel axle 118 is connected to the corresponding walking drive mechanism 105. There is a gap between the walking drive mechanism 105 and the drive wheel frame 116 to ensure that the walking drive mechanism 105 can swing left and right within the drive wheel frame 116.

[0028] The front caster wheel assembly 121 also includes two front axles 119, which are symmetrically arranged on the front and rear sides of the travel drive mechanism 105. The axial direction of each front axle 119 is parallel to the travel direction. The two ends of the two front axles 119 are rotatably connected to the drive wheel frame 116, and the ends of the two front axles 119 are fixedly connected to the corresponding travel drive mechanism 105. Thus, in addition to transmitting power from the travel drive mechanism 105 to the two corresponding casters 117 through the cooperation of the front axles 118 and the travel drive mechanism 105 to control the forward and backward movement of the mobile base of the entire tower inner wall spraying equipment, the cooperation of the front axles 119 and the drive wheel frame 116 ensures that the entire front caster wheel assembly 121 can rotate freely in a vertical plane perpendicular to the travel direction to adapt to the curvature of the tower inner wall.

[0029] The upper parts of the two drive wheel frames 116 are connected to a steering assembly 124, which drives the two drive wheel frames 116 to rotate in the horizontal plane. Specifically, in this embodiment, the steering assembly 124 includes a steering drive motor 106 mounted on the chassis 101. The power output end of the steering drive motor 106 is connected to a steering reducer 126. The two power output ends of the steering reducer 126 are simultaneously connected to two front horizontal transmission rods 107. One end of the front horizontal transmission rod 107 is connected to the power output end of the steering reducer 126, and the other end of the front horizontal transmission rod 107 is connected to a driving reversing gear 123 via a reduction gearbox 108. The driving reversing gear 123 is vertically oriented. The driving reversing gear 123 meshes with a driven reversing gear 122. The driven reversing gear 122 is fixedly connected to a drive wheel frame 116 on the corresponding side. The drive wheel frame 116 or the driven reversing gear 122 is horizontally rotatably mounted on the lower surface of the chassis 101 via bearings. At this time, under the action of the steering drive motor 106, the present invention can drive the drive wheel frames 116 on both sides to rotate together in the corresponding direction, so as to change the walking direction of the mobile base of the entire tower inner wall spraying equipment.

[0030] Based on this, when using this utility model for tower inner wall spraying, on the one hand, the front caster wheel set 121 and the rear caster wheel set 115 in this utility model can automatically adjust their posture according to the curvature of the tower inner wall and fit against the tower inner wall over a large area, thereby reducing slippage and ensuring that the equipment runs smoothly inside the tower, thus ensuring uniform spraying and improving the spraying quality of the tower inner wall; on the other hand, this utility model can use the lifting assembly 125, which is composed of components such as the lifting drive motor 104, the lifting reducer 103 and the lifting machine 102, to control the lifting of the driven wheel frame 112, ensuring that the center line of the rotating spraying unit 300 is always at the center of the tower when the equipment moves inside the conical tower.

[0031] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those 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 to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A mobile base for a tower inner wall spraying device, comprising a chassis (101), wherein a drive wheel set and a driven wheel set are respectively provided at the front and rear ends of the chassis (101); characterized in that, The drive wheel assembly includes two drive wheel frames (116), each drive wheel frame (116) is vertically rotatably mounted with a front wheel assembly (121), the front wheel assembly (121) is driven by a walking drive mechanism (105), the driven wheel assembly includes two driven wheel frames (112), each driven wheel frame (112) is vertically rotatably mounted with a rear wheel assembly (115), the driven wheel assembly also includes a lifting assembly (125), the lifting assembly (125) is driven by both driven wheel frames (112).

2. The movable base for the tower inner wall spraying equipment according to claim 1, characterized in that, The lifting assembly (125) includes a lifting drive motor (104) mounted on a chassis (101). The power output end of the lifting drive motor (104) is connected to a lifting reducer (103). The lifting reducer (103) is also connected to two lifts (102). The two lifts (102) are mounted on the chassis (101), and the power output end of the lifts (102) is fixedly connected to the corresponding driven wheel frame (112).

3. The movable base for the tower inner wall spraying equipment according to claim 1, characterized in that, The rear caster assembly (115) includes an auxiliary frame (114), on which two casters (113) are rotatably mounted. A hinge seat (109) is fixedly installed on the upper part of the auxiliary frame (114). A hinge seat (111) is provided at the lower end of the driven wheel frame (112). The hinge seat (111) and the hinge seat (109) are hinged together by a hinge shaft (120), and the axis of the hinge shaft (120) is parallel to the direction of travel.

4. The movable base for 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 (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 movable base for the tower inner wall spraying equipment according to claim 1, characterized in that, The front wheel assembly (121) includes two casters (117), which are symmetrically arranged on both sides of the walking drive mechanism (105). A front wheel axle (118) is fixedly installed in the middle of each of the two casters (117). The axial direction of the front wheel axle (118) is perpendicular to the walking direction, and the front wheel axle (118) is connected to the corresponding walking drive mechanism (105). The front wheel assembly (121) also includes two front wheel axles (119), which are symmetrically arranged on both sides of the walking drive mechanism (105). The axial direction of the front wheel axles (119) is parallel to the walking direction. The two front wheel axles (119) are rotatably connected to the drive wheel frame (116) at opposite ends, and the two front wheel axles (119) are fixedly connected to the corresponding walking drive mechanism (105) at near ends.

6. The movable base for the tower inner wall spraying equipment according to claim 1, characterized in that, The drive wheel assembly also includes a steering component (124), which is simultaneously connected to the two drive wheel carriers (116).

7. The movable base for the tower inner wall spraying equipment according to claim 6, characterized in that, The steering assembly (124) includes a steering drive motor (106) mounted on the chassis (101). The power output end of the steering drive motor (106) is connected to a steering reducer (126). The steering reducer (126) is also connected to two front horizontal transmission rods (107). One end of the front horizontal transmission rod (107) is connected to a drive reversing gear (123) via a reduction gearbox (108). The drive reversing gear (123) is vertically axially arranged. The drive reversing gear (123) meshes with a driven reversing gear (122). The driven reversing gear (122) is fixedly connected to the corresponding drive wheel frame (116). The drive wheel frame (116) or the driven reversing gear (122) is horizontally rotatably mounted on the chassis (101).

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