Large-diameter steel cone inner surface automatic paint spraying machine
By designing an automatic spray painting machine, the automatic rotation and movement of the spray gun are achieved using support components and a walking mechanism, which solves the problems of low spraying efficiency and uneven spraying on the inner surface of large-diameter steel cones, and achieves efficient and uniform spraying results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING ANTIE OFFSHORE ENG EQUIP CO LTD
- Filing Date
- 2025-07-17
- Publication Date
- 2026-06-23
Smart Images

Figure CN224389094U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of steel cone inner surface painting equipment, specifically an automatic steel cone inner surface painting machine. Background Technology
[0002] Large-diameter steel cones are typically used for wind turbine towers. Wind turbine towers are a key component of wind power generation systems, mainly used to support the nacelle and blades of wind turbine generators, enabling them to reach the optimal windward height and ensuring the stable operation of the generators. During the production process, the inner surface of wind turbine towers needs to be painted. Painting the inner surface can improve its corrosion resistance and service life.
[0003] Painting the inner surface of wind turbine towers typically involves using rail-mounted painting equipment or deploying a spray nozzle via a telescopic boom. Both methods allow for painting inside the tower, but require manual adjustment and movement, which is inefficient and makes it difficult to guarantee the quality of the paint. This is especially true when painting the inner surface of large-diameter steel cone towers, where the large space makes manual operation time-consuming, labor-intensive, and prone to uneven painting and missed spots.
[0004] In summary, this utility model provides an automatic painting machine for the inner surface of a large-diameter steel cone to solve the above problems. Utility Model Content
[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:
[0006] An automatic spray painting machine for the inner surface of a large-diameter steel cone includes a support assembly comprising a fixed cylinder, a fixed ring at one end of the fixed cylinder, and a connecting rod fixed to the fixed ring; a spray painting assembly comprising a fixed plate fixed to the other end of the fixed cylinder, a turntable located on the surface of the fixed plate, a fixed rod fixed to the surface of the turntable, a spray gun fixed to one end of the fixed rod, a gear ring and a rotating gear mounted on the fixed plate for rotating the turntable, a rotary motor fixed to the surface of the fixed plate for providing rotational power, and a spray pipe for conveying paint, wherein four fixed rods and four spray guns are provided; and a traveling mechanism comprising telescopic arms, an active traveling assembly for traveling, and an auxiliary traveling assembly for assisting traveling, wherein four telescopic arms are provided and respectively fixed to both sides of the fixed ring and the fixed plate.
[0007] Furthermore, in this invention, the active walking component is fixedly connected to the telescopic arm on the surface of the fixed ring, the auxiliary walking component is fixedly connected to the telescopic arm on the surface of the fixed disk, and the other end of the connecting rod is fixedly connected to the fixed disk.
[0008] Furthermore, in this utility model, the active walking assembly includes a first protective cover fixed to the telescopic arm, an active wheel mounted in the inner cavity of the first protective cover via a bearing, a walking motor fixed to the top of the first protective cover, an active gear located at the upper end of the inner cavity of the first protective cover, and a driven gear fixed to the top of the active wheel.
[0009] Furthermore, in this utility model, the driving gear meshes with the driven gear, and the output shaft of the walking motor passes through the inner cavity of the first protective cover and is connected to the driving gear for transmission.
[0010] Furthermore, in this invention, the auxiliary walking assembly includes a second protective cover fixed to the telescopic arm, and an auxiliary wheel fixed to the inner cavity of the second protective cover by a bearing.
[0011] Furthermore, in this utility model, the gear ring is fixed to the inner cavity of the fixed disk by a rotary bearing, the turntable is fixedly connected to the gear ring, the rotating gear is located in the inner cavity of the fixed disk and meshes with the gear ring, the output shaft of the rotary motor passes through the inner cavity of the fixed disk and is connected to the rotating gear for transmission, and one end of the paint spraying tube passes through the fixed cylinder and the fixed rod and is connected to the rotary motor through a rotary joint.
[0012] Beneficial effects: This utility model has the following beneficial effects:
[0013] This invention provides a solid support for the entire paint spraying machine through the coordinated operation of the fixed cylinder, fixed ring, and connecting rod in the support assembly. The fixed ring and connecting rod work together to ensure the stability of the structure, allowing the paint spraying machine to remain stable during operation and preventing shaking or tilting. The paint spraying assembly is equipped with four fixed rods and a spray gun. Through the precise cooperation of the gear ring, rotating gear, and rotating motor, the turntable can drive the spray gun to rotate, enabling uniform painting of the inner surface of the large-diameter steel cone from multiple angles. This effectively avoids painting dead spots, improves the uniformity and comprehensiveness of the painting, and thus ensures the quality of the painting. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;
[0015] Figure 2 This is a schematic diagram of the paint spraying assembly of this utility model in its separated state.
[0016] Figure 3 This is a schematic diagram of the connection state structure of the active walking component of this utility model;
[0017] Figure 4 This is a schematic diagram of the connection structure between the driving wheel and the driven gear of this utility model;
[0018] Figure 5 This is a schematic diagram of the connection structure between the painting device and the tower of this utility model.
[0019] In the picture:
[0020] 100. Support assembly; 110. Fixed cylinder; 120. Fixed ring; 130. Connecting rod; 200. Spray painting assembly; 210. Fixed plate; 220. Turntable; 230. Fixed rod; 240. Spray gun; 250. Gear ring; 260. Rotary gear; 270. Rotary motor; 280. Spray painting pipe; 300. Walking mechanism; 310. Telescopic arm; 320. Active walking assembly; 321. First protective cover; 322. Drive wheel; 323. Walking motor; 324. Drive gear; 325. Driven gear; 330. Auxiliary walking assembly; 331. Second protective cover; 332. Auxiliary wheel. Detailed Implementation
[0021] To better understand the technical content of this utility model, specific embodiments are described below in conjunction with the accompanying drawings. Various aspects of this utility model are described in this disclosure with reference to the accompanying drawings, which illustrate numerous illustrative embodiments. The embodiments of this disclosure are not necessarily defined to include all aspects of this utility model. It should be understood that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in this utility model are not limited to any particular implementation. Furthermore, some aspects of this utility model can be used alone or in any suitable combination with other aspects disclosed in this utility model.
[0022] Example 1
[0023] like Figures 1-5The image shows the first embodiment of this utility model, which provides an automatic spray painting machine for the inner surface of a large-diameter steel cone. It includes a support assembly 100, comprising a fixed cylinder 110, a fixing ring 120 located at one end of the fixed cylinder 110, and a connecting rod 130 fixed to the fixing ring 120. The spray painting assembly 200 includes a fixed plate 210 fixed to the other end of the fixed cylinder 110, a turntable 220 located on the surface of the fixed plate 210, a fixing rod 230 fixed to the surface of the turntable 220, a spray gun 240 fixed to one end of the fixing rod 230, and a mounting... The fixed disk 210 includes a gear ring 250 and a rotating gear 260 for rotating the turntable 220, a rotary motor 270 fixed to the surface of the fixed disk 210 for providing rotational power, and a paint spray pipe 280 for conveying paint. The fixed rod 230 and the spray gun 240 are each provided with four. The walking mechanism 300 includes a telescopic arm 310, an active walking component 320 for walking, and an auxiliary walking component 330 for assisting walking. The telescopic arm 310 is provided with four, which are respectively fixed to the fixed ring 120 and both sides of the fixed disk 210.
[0024] like Figures 1-5 As shown, the rotary motor 270 in the painting assembly 200 drives the rotary gear 260, which meshes with the gear ring 250, causing the gear ring 250 and the turntable 220 fixed thereto to rotate. Four fixed rods 230 and a spray gun 240 are fixed on the turntable 220. The spray gun 240 can automatically rotate around the fixed plate 210, achieving annular painting of the inner surface of the large-diameter steel cone. Compared to manual adjustment and movement of the spray gun, this automated rotary painting method greatly improves painting efficiency. The walking mechanism 300 includes an active walking assembly 320 and an auxiliary walking assembly 330. The walking motor 323 in the active walking assembly 320 drives the active gear 324, which meshes with the auxiliary gear 260. The engagement of the drive gear 325 causes the drive wheel 322 to rotate, enabling automatic movement. The auxiliary wheel 332 of the auxiliary walking component 330 provides auxiliary support and movement. The four telescopic arms 310 are fixed to both sides of the fixed ring 120 and the fixed plate 210, allowing the paint sprayer to move smoothly inside the cone. The telescopic arms 310 can be hydraulic telescopic rods. Since the spray gun 240 moves in a uniform circular motion under the drive of the turntable 220, and four spray guns 240 work simultaneously, it can ensure uniform painting of the inner surface of the cone in the circumferential direction. At the same time, the uniform movement of the walking mechanism 300 also makes the painting in the axial direction more uniform, avoiding the problem of uneven spraying caused by inconsistent movement speed during manual operation.
[0025] Example 2
[0026] Reference Figures 1-5 This is the second embodiment of the present invention, which is based on the previous embodiment.
[0027] In this embodiment, the active walking component 320 is fixedly connected to the telescopic arm 310 on the surface of the fixed ring 120, the auxiliary walking component 330 is fixedly connected to the telescopic arm 310 on the surface of the fixed disk 210, and the other end of the connecting rod 130 is fixedly connected to the fixed disk 210.
[0028] The active walking assembly 320 includes a first protective cover 321 fixed to the telescopic arm 310, an active wheel 322 mounted on the inner cavity of the first protective cover 321 via bearings, a walking motor 323 fixed to the top of the first protective cover 321, an active gear 324 located at the upper end of the inner cavity of the first protective cover 321, and a driven gear 325 fixed to the top of the active wheel 322.
[0029] The driving gear 324 meshes with the driven gear 325, and the output shaft of the walking motor 323 passes through the inner cavity of the first protective cover 321 and is connected to the driving gear 324 for transmission.
[0030] The auxiliary walking assembly 330 includes a second protective cover 331 fixed to the telescopic arm 310, and an auxiliary wheel 332 fixed to the inner cavity of the second protective cover 331 by bearings.
[0031] The gear ring 250 is fixed to the inner cavity of the fixed disk 210 by a slewing bearing. The turntable 220 is fixedly connected to the gear ring 250. The rotating gear 260 is located in the inner cavity of the fixed disk 210 and meshes with the gear ring 250. The output shaft of the rotary motor 270 passes through the inner cavity of the fixed disk 210 and is connected to the rotating gear 260 for transmission. One end of the paint spray tube 280 passes through the fixed cylinder 110 and the fixed rod 230 and is connected to the rotary motor 270 through a rotary joint.
[0032] like Figures 1-5 As shown, the walking motor 323 starts, and its output shaft passes through the inner cavity of the first protective cover 321 and is connected to the drive gear 324, driving the drive gear 324 to rotate. Since the drive gear 324 meshes with the driven gear 325, and the driven gear 325 is fixed to the top of the drive wheel 322, the rotation of the drive gear 324 will drive the drive wheel 322 to rotate. The active walking component 320 is fixedly connected to the telescopic arm 310 on the surface of the fixed ring 120, thereby driving the entire paint sprayer to move inside the cone. The auxiliary wheel 332 is fixed to the inner cavity of the second protective cover 331 through the bearing. The auxiliary walking component 330 is fixedly connected to the telescopic arm 310 on the surface of the fixed plate 210, playing an auxiliary support and walking role during the movement of the paint sprayer, ensuring the stability of the paint sprayer's movement. There are four telescopic arms 310, which are fixed to both sides of the fixed ring 120 and the fixed plate 210 respectively. They can be extended and retracted according to the diameter of the cone to adapt to cones of different diameters.
[0033] In use, the fixed cylinder 110 serves as the basic support structure for the entire device. A fixed ring 120 is installed at one end of the fixed cylinder 110. A connecting rod 130 connects the fixed ring 120 and the fixed disk 210, providing stable support for the painting assembly 200 and the traveling mechanism 300. The rotary motor 270 starts, its output shaft passing through the inner cavity of the fixed disk 210 and driving the rotary gear 260 to rotate. Since the rotary gear 260 meshes with the gear ring 250, the rotation of the rotary gear 260 drives the gear ring 250 to rotate. The rotary bearing rotates within the inner cavity of the fixed disk 210, causing the turntable 220, which is fixedly connected to the gear ring 250, to rotate as well. The four fixed rods 230 fixed to the surface of the turntable 220 and the spray gun 240 at one end of the fixed rods 230 also move in a circular motion. The paint is conveyed through the paint spray pipe 280, one end of which passes through the fixed cylinder 110 and the fixed rods 230 and is connected to the rotary motor 270 through a rotary joint, thereby conveying the paint to the spray gun 240 for painting.
[0034] When the walking motor 323 starts, its output shaft passes through the inner cavity of the first protective cover 321, driving the drive gear 324 to rotate. The drive gear 324 meshes with the driven gear 325, and the driven gear 325 drives the drive wheel 322 to rotate through the bearing in the inner cavity of the first protective cover 321. The active walking component 320 is fixedly connected to the telescopic arm 310 on the surface of the fixed ring 120, realizing the movement of the device. The auxiliary wheel 332 is fixed to the inner cavity of the second protective cover 331 through the bearing. The auxiliary walking component 330 is fixedly connected to the telescopic arm 310 on the surface of the fixed disk 210, playing a role in auxiliary support and stable walking during the device's movement. The four telescopic arms 310 are respectively fixed on both sides of the fixed ring 120 and the fixed disk 210, and can be adjusted according to the diameter of the cone to adapt to large-diameter steel cones of different diameters.
[0035] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Since this application is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail in this application.
[0036] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the claims.
Claims
1. An automatic spray painting machine for the inner surface of a large-diameter steel cone, characterized in that: include, The support assembly (100) includes a fixed cylinder (110), a fixed ring (120) located at one end of the fixed cylinder (110), and a connecting rod (130) fixed to the fixed ring (120); The painting assembly (200) includes a fixed plate (210) fixed to the other end of the fixed cylinder (110), a turntable (220) located on the surface of the fixed plate (210), a fixed rod (230) fixed to the surface of the turntable (220), a spray gun (240) fixed to one end of the fixed rod (230), a gear ring (250) and a rotating gear (260) mounted on the fixed plate (210) for rotating the turntable (220), a rotary motor (270) fixed to the surface of the fixed plate (210) for providing rotational power, and a paint spray tube (280) for conveying paint. The fixed rod (230) and the spray gun (240) are each provided with four. The walking mechanism (300) includes a telescopic arm (310), an active walking component (320) for walking, and an auxiliary walking component (330) for assisting walking. The telescopic arm (310) is provided in four parts, which are respectively fixed to the two sides of the fixed ring (120) and the fixed plate (210).
2. The automatic painting machine for the inner surface of a large-diameter steel cone as described in claim 1, characterized in that: The active walking component (320) is fixedly connected to the telescopic arm (310) on the surface of the fixed ring (120), the auxiliary walking component (330) is fixedly connected to the telescopic arm (310) on the surface of the fixed disk (210), and the other end of the connecting rod (130) is fixedly connected to the fixed disk (210).
3. The automatic painting machine for the inner surface of a large-diameter steel cone as described in claim 1, characterized in that: The active walking assembly (320) includes a first protective cover (321) fixed to the telescopic arm (310), an active wheel (322) mounted on the inner cavity of the first protective cover (321) via a bearing, a walking motor (323) fixed to the top of the first protective cover (321), an active gear (324) located at the upper end of the inner cavity of the first protective cover (321), and a driven gear (325) fixed to the top of the active wheel (322).
4. The automatic painting machine for the inner surface of a large-diameter steel cone as described in claim 3, characterized in that: The driving gear (324) meshes with the driven gear (325), and the output shaft of the walking motor (323) passes through the inner cavity of the first protective cover (321) and is connected to the driving gear (324) for transmission.
5. The automatic painting machine for the inner surface of a large-diameter steel cone as described in claim 1, characterized in that: The auxiliary walking assembly (330) includes a second protective cover (331) fixed to the telescopic arm (310) and an auxiliary wheel (332) fixed to the inner cavity of the second protective cover (331) by bearings.
6. The automatic painting machine for the inner surface of a large-diameter steel cone as described in claim 1, characterized in that: The gear ring (250) is fixed to the inner cavity of the fixed disk (210) by a rotary bearing. The turntable (220) is fixedly connected to the gear ring (250). The rotating gear (260) is located in the inner cavity of the fixed disk (210) and meshes with the gear ring (250). The output shaft of the rotary motor (270) passes through the inner cavity of the fixed disk (210) and is connected to the rotating gear (260) for transmission. One end of the paint spray tube (280) passes through the fixed cylinder (110) and the fixed rod (230) and is connected to the rotary motor (270) through a rotary joint.