CN107051789A - A kind of inner wall of wind-power tower drum auto spray painting device and auto spray painting method - Google Patents

Abstract

The present invention is a kind of inner wall of wind-power tower drum auto spray painting device and auto spray painting method, and wherein device includes walking dolly, support frame, spray gun, switch board, fixed mount, inlet valve, rotary valve, hollow rotating shaft and motor；Motor is fixedly connected on support frame and drives hollow rotating shaft to rotate, rotary valve is fixed on support frame by fixed mount, inlet valve is connected with hollow rotating shaft by rotary valve and provides material circulation passage, and the other end of hollow rotating shaft is connected with spray gun and material is sprayed from the nozzle of spray gun；Motor signal connects switch board；Walking dolly signal connects switch board.Invention has the advantages of high efficiency, painting effect good, application thickness uniform, is adapted to diameter 3m 10m Large-diameter Steel inside pipe wall spray painting, automatic job is realized using micro computer control, without artificial operation, reduces operative employee's fatigue, improves operating efficiency.Coating is smooth, smooth, without brush mark.Save coating.

Description

An automatic painting device and automatic painting method for the inner wall of a wind power tower

technical field

The invention relates to an automatic paint spraying device, in particular to a paint spraying device for the inner wall of a large-diameter cylinder.

Background technique

The onshore wind power tower is usually composed of a tapered tubular steel tower with a diameter of 4.6m and a single-section longest diameter of 30m, which has the characteristics of large diameter and long length. 30m. Derusting and painting the tower surface are the two most important processes in the manufacturing process. The existing wind power tower inner walls are painted by manual high-pressure spraying. This traditional method has the following disadvantages:

1. Artificial coating is prone to local uneven thickness;

2. In order to avoid local uneven thickness on site, the operator often covers the whole layer after the overall construction is completed, which is easy to cause loss of paint, and the loss rate usually reaches 20-30%.

3. The efficiency of manual coating is low.

4. Manual painting has a great impact on the occupational health of operators.

5. The diameter of the offshore wind power tower is very large. The traditional manual painting method needs to use a special roller frame for painting to keep the tower in a rotating state for painting.

Contents of the invention

In order to overcome the above-mentioned shortcomings of the prior art, the object of the present invention is to provide an automatic painting device and method for the inner wall of a wind power tower, the device can realize automatic painting of the inner wall of a large diameter cylinder, and the thickness of the paint layer is uniform.

The technical scheme that the present invention realizes above-mentioned purpose is:

An automatic painting device for the inner wall of a wind power tower, including a walking trolley, a support frame fixed on the walking trolley, and a spray gun connected to the support frame, and also includes: a control cabinet, a fixed frame, a feed valve, a rotary valve, a hollow Revolving shaft and motor; the motor is fixedly connected to the supporting frame and drives the hollow rotating shaft to rotate, the rotary valve is fixed on the supporting frame through the fixing frame, and the feed valve passes through the rotary valve It is connected with the hollow rotating shaft and provides a material circulation channel, and the other end of the hollow rotating shaft is connected with the spray gun so that the material is ejected from the nozzle of the spray gun; the signal of the motor is connected to the control cabinet; the signal of the walking trolley is connected to The control cabinet.

A mixer is connected to the rotary valve, one side of the mixer is connected to the feed valve, and the other side is connected to the intake valve, and the mixer is also connected to a pressure relief valve.

The support frame is a double-set rod structure, and the outer rod and the inner rod are fixedly connected by adjusting knobs.

The motor is connected to the hollow shaft through a gearbox, and the gearbox is sleeved on the hollow shaft.

A support plate is provided on the support frame, and the support plate abuts or is fixed on the bottom end of the motor.

A connection hose is connected to the end of the spray gun, and the other end of the connection hose communicates with the hollow rotating shaft to provide a material channel.

An adjusting sleeve perpendicular to the hollow rotating shaft is fixed on the top end of the hollow rotating shaft, and the spray gun is movably nested in the adjusting sleeve; at least one spray gun is arranged on the adjusting sleeve.

The nozzle is an atomizing nozzle; the spray gun is a telescopic rod structure.

The front end of the walking trolley is provided with a distance sensing device.

An automatic painting method, step 1, connecting the feed valve with the pipeline of the high-pressure airless spraying machine, connecting the power supply of the control cabinet, the traveling trolley and the motor, adjusting the nozzle position of the spray gun to the required height, and the device is in the ready working state;

Step 2. Set the rotation speed button and the walking speed button to the required speed, start the program of the control cabinet, the walking car moves forward, the motor rotates and drives the hollow shaft to rotate;

Step 3. Start the high-pressure airless spraying machine. The paint is pressurized and sprayed out in a fan shape from the nozzle. Any nozzle performs a circular motion with the hollow rotating shaft as the center of the circle. Driven by the walking trolley, the trajectory of the nozzle is spiral. advance.

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

The invention has high efficiency, good coating effect and uniform coating thickness, is suitable for spraying paint on the inner wall of large-diameter steel pipes with a diameter of 3m-10m, adopts microcomputer control to realize automatic operation, does not need manual operation, reduces operator fatigue, and improves work efficiency. The coating is flat, smooth and free from brush marks. Save paint.

Description of drawings

Fig. 1 is the front view of embodiment 1;

Fig. 2 is the left view of embodiment 1;

Fig. 3 is a schematic diagram of the use state of the present invention;

Fig. 4 is the front view of Embodiment 2;

Fig. 5 is another state left view of embodiment 1.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example 1:

Referring to Fig. 1 , an automatic painting device for the inner wall of a wind power tower includes a traveling trolley 1, a support frame 4 fixed on the traveling trolley 1 and a spray gun 15 connected to the support frame 4, and also includes: a control cabinet 2, a fixed Frame 5, feed valve 8, rotary valve 9, hollow shaft 10, motor 17; the motor 17 is fixedly connected to the support frame 4 and drives the hollow shaft 10 to rotate, and the rotary valve 9 passes through the fixed The frame 5 is fixed on the support frame 4, the feed valve 8 is connected with the hollow shaft 10 through the rotary valve 9 and provides a material circulation channel, and the other end of the hollow shaft 10 is connected with the spray gun 15 And the material is ejected from the nozzle 14 of the spray gun 15; the motor 17 is connected to the control cabinet 2 by signal; the walking trolley 1 is connected to the control cabinet 2 by signal. A mixer is connected to the rotary valve 9 , one side of the mixer is connected to the feed valve 8 , and the other side is connected to the intake valve 6 , and the pressure relief valve 7 is also connected to the mixer. There are two feeding methods for paint and other materials. In the first type, paint and other materials enter through the feed valve 8 and mix with the compressed air entering the intake valve 6 in the mixer; in the second type, the high-pressure airless sprayer is directly connected to the intake valve 6 through a pipeline , In this way, the feed valve 8 does not need to connect other materials. No matter what kind of feeding method, after passing through the rotary valve 9, it passes through the hollow rotating shaft 10, and then is delivered to the spray gun 15 li. The pressure relief valve 7 provided on the mixer can assist pressure relief. When the pipeline is blocked or needs to be relieved from the mixer, the pressure relief valve 7 can be opened to realize pressure relief.

3, the top of the nozzle 14 has a certain distance from the inner wall of the tower 23, and when the position of the spray gun 15 is adjusted, it is ensured that the nozzle 14 will not touch the inner accessory 22 during the rotation of the spray gun 15. As shown in Figure 3, the spray gun 15 makes a circular motion around the hollow shaft 10. In order to ensure that the feed pipeline is not twisted and knotted during the rotation process, the feed structure is connected with the rotation structure through the rotary valve 9, which ensures high pressure. The circulation of the material does not leak, and it also realizes that the pipeline for feeding the material is not twisted and knotted during the rotation of the hollow rotating shaft 10 .

The motor 17 is connected to the hollow shaft 10 through a gearbox 12 , and the gearbox 12 is sleeved on the hollow shaft 10 . As shown in FIG. 2 , the control cabinet 2 is provided with three function keys, which are respectively: a power switch 19 , a rotation speed button 20 and a walking speed button 21 . The rotation speed ratio of the gearbox 12 can be changed by adjusting the rotation speed button 20 , thereby changing the rotation speed of the hollow shaft 10 . The forward speed of the walking dolly 1 can be changed by adjusting the walking speed button 21 . The control cabinet 2 of the present invention can also adopt a control system with a microprocessor, PLC or single-chip microcomputer to control the rotational speed of the hollow rotating shaft 10 and the forward speed of the walking trolley through a program. In another form of this embodiment, a variable frequency motor is used to drive the hollow shaft 10, and the speed can also be adjusted by adjusting the speed of the variable frequency motor.

The support frame 4 is a double rod structure, and the outer rod and the inner rod are fixedly connected through the adjusting knob 3 . This structure can adjust the height of the device, especially under the situation that the height of the spray gun 15 cannot be adjusted further; adjust the relative position of the outer sleeve rod and the inner sleeve rod, and tighten the adjustment knob 3, thereby adjusting the height of the outer sleeve rod of the support frame 4 position, the height of the unit can be adjusted.

The support frame 4 is provided with a support plate 18 , and the support plate 18 abuts or is fixed on the bottom end of the motor 17 .

The present invention can adjust the height of the nozzle 14 of spray gun 15, can realize by two kinds of structures, a kind of mode of Fig. 1: be connected with connecting hose 13 at the end of described spray gun 15, the other end of this connecting hose 13 Communication provides a material passage on the hollow shaft 10 . An adjusting sleeve 16 perpendicular to the hollow rotating shaft 10 is fixed on the top end of the hollow rotating shaft 10 , and the spray gun 15 is movably socketed in the adjusting sleeve 16 . The structural material enters the connecting hose 13 from the hollow rotating shaft 10 , enters the spray gun 15 from the connecting hose 13 , and finally sprays out from the nozzle 14 . The spray gun 15 is movably socketed in the adjustment sleeve 16 , and when the spray gun 15 is adjusted to a proper position, the screw of the adjustment sleeve 16 is locked to fasten the connection with the spray gun 15 . In this way, the position of the nozzle 14 is adjusted by adjusting the relative position of the spray gun 15 and the adjustment sleeve 16, and the length of the spray gun 15 itself is not adjustable.

The nozzle 14 is an atomizing nozzle, and its structure is fan-shaped or cylindrical, which can expand the spraying range. The nozzle 14 is threaded onto the stem of the spray gun 15 .

The hollow rotating shaft 10 is sleeved with a connecting sleeve 11 , and the connecting sleeve 11 is sleeved in the rotary valve 9 .

The adjustment sleeve 16 is provided with at least one spray gun 15, as shown in Fig. 5, it can be set as a structure composed of three spray guns 15 at a certain angle to each other, and paint can be sprayed from three nozzles 14 at one time to improve the spraying efficiency. These three spray guns 15 can be arranged on the same vertical plane, and can also be arranged on different vertical planes. If it is set on the same plane, the same feed can be used; if it is set on different vertical planes, different feeds can be used to connect the primer and the intermediate coating respectively according to the order of their rotation. In this case, more There is a certain distance between the two spray guns 15 in the transverse direction, to ensure that after the spray guns 15 in the horizontal direction are finished spraying, a drying time is guaranteed, and the next spray gun 15 just sprays another layer of paint.

The front end of the walking trolley 1 is provided with a distance sensing device, which can be an infrared sensor or a visual sensor, etc., and is used to detect the distance between the walking trolley 1 and the flange surface of the tower tube 23. When the walking trolley 1 reaches the distance between the tower tube 23 At the front end, the control cabinet 2 controls the walking trolley 1 to stop and move forward through the program.

Working principle of the present invention is:

The pressurized paint enters from the intake valve 6, enters the connecting sleeve 11 in the rotary valve 9, then enters the connecting hose 13 through the hollow rotating shaft 10, and finally enters the spray gun 15, sprays out from the nozzle 14, and sprinkles it evenly on the tower 23 inner surfaces. As shown in Figure 3, the rotational speed of the spray gun 15 and the forward speed of the walking trolley 1 are set in advance, and the position of the spray gun 15 and the height of the device are adjusted. Place the trolley 1 on the bottom of the tower 23, start the control cabinet 2, the trolley 1 will automatically advance at a predetermined speed, and control the rotation speed of the spray gun 15 to continuously spray paint from the nozzle 14. The motor 17 changes the speed through the gearbox 12 and drives the hollow shaft 10 to rotate. The rotation of the hollow shaft 10 drives the spray gun 15 to perform circular motion around the axis of the hollow shaft 10, thereby driving the nozzle 14 to also perform circular motion. Therefore, the trajectory of the nozzle 14 is a uniform circular motion/circular motion with non-linear speed change, and there is a forward motion perpendicular to this peripheral surface, which merges into a spiral uniform motion, thereby spraying on the tower tube The paint on the 23 is uniform in thickness. Since the circular motion speed and forward speed of the nozzle 14 can be adjusted, the thickness of the sprayed paint can be adjusted.

Example 2:

Referring to FIG. 4 , the difference from Embodiment 1 is that the spray gun 15 is a telescopic rod structure, and the length of the spray gun 15 itself can be adjusted in this structure, thereby adjusting the relative distance of the nozzle 14 relative to the hollow shaft 10 . In this way, the adjustment sleeve 16 is not required, and the connecting hose 13 may not be provided, and the material coming out from the hollow rotating shaft 10 directly enters the spray gun 15 . The function of this structure is the same as that of the embodiment 1, which is to adjust the relative position of the nozzle 14 relative to the hollow shaft 10 . All the other structures and effects are the same as in Example 1.

A kind of automatic painting method using the automatic painting device for the inner wall of any wind power tower tube of the present invention, specifically:

Step 1. Connect the intake valve 6 to the pipeline of the high-pressure airless sprayer, connect the power supply of the control cabinet 2, the trolley 1 and the motor 17, and adjust the position of the nozzle 14 of the spray gun 15 to the required height. The height needs to be determined according to the diameter of the tower tube 23 and the height of the inner accessory 22, and the device is in a preparatory working state;

Step 2, set the rotation speed button 20 and the walking speed button 21 to the required speed, start the program of the control cabinet 2, the walking trolley 1 moves forward, the motor 17 rotates and drives the hollow shaft 10 to rotate;

Step 3: Start the high-pressure airless spraying machine, the paint is pressurized and sprayed out in a fan shape from the nozzle 14, any nozzle 14 performs a circular motion with the hollow rotating shaft 10 as the center of the circle, and driven by the walking trolley 1, the nozzle 14 The motion trajectory advances spirally.

The embodiments of the present invention are not limited thereto. According to the above content of the present invention, using ordinary technical knowledge and conventional means in this field, without departing from the above-mentioned basic technical ideas of the present invention, the present invention can also make other various forms. Amendment, replacement or alteration all fall within the protection scope of the present invention.

Claims (10)

1. a kind of inner wall of wind-power tower drum auto spray painting device, including walking dolly (1), the branch that is fixed on the walking dolly (1) Support (4) and the spray gun (15) being connected on the support frame (4), it is characterised in that also include：Switch board (2), fixed mount (5), inlet valve (8), rotary valve (9), hollow rotating shaft (10), motor (17)；The motor (17) is fixedly connected on the support On frame (4) and the hollow rotating shaft (10) is driven to rotate, the rotary valve (9) is fixed on the branch by the fixed mount (5) On support (4), the inlet valve (8) is connected with the hollow rotating shaft (10) by the rotary valve (9) and provides material circulation Passage, the other end of the hollow rotating shaft (10) is connected with the spray gun (15) and causes nozzle of the material from the spray gun (15) (14) spray；Motor (17) signal connects the switch board (2)；Walking dolly (1) signal connects the switch board (2)。

2. a kind of inner wall of wind-power tower drum auto spray painting device according to claim 1, it is characterised in that：The rotary valve (9) On be connected with blender, the blender side is connected on the inlet valve (8), opposite side connection intake valve (6), the blender It is also associated with relief valve (7).

3. a kind of inner wall of wind-power tower drum auto spray painting device according to claim 1, it is characterised in that：Support frame as described above (4) For double loop bar structures, its outer loop bar is fixedly connected with interior loop bar by adjusting knob (3).

4. a kind of inner wall of wind-power tower drum auto spray painting device according to claim 1, it is characterised in that：The motor (17) is led to Cross gearbox (12) to be connected with the hollow rotating shaft (10), the gearbox (12) is sleeved on the hollow rotating shaft (10).

5. a kind of inner wall of wind-power tower drum auto spray painting device according to claim 4, it is characterised in that：Support frame as described above (4) On be provided with supporting plate (18), the supporting plate (18) abuts or is fixed on the motor (17) bottom.

6. a kind of inner wall of wind-power tower drum auto spray painting device according to claim 1, it is characterised in that：In the spray gun (15) End be connected with connection flexible pipe (13), the connection flexible pipe (13) the other end connection provides thing on the hollow rotating shaft (10) Expect passage.

7. a kind of inner wall of wind-power tower drum auto spray painting device according to claim 6, it is characterised in that：The hollow rotating shaft (10) top is fixed with the adjusting set (16) perpendicular to hollow rotating shaft (10), and the spray gun (15) is movably socketed in the tune In section set (16)；At least one spray gun (15) is provided with the adjusting set (16).

8. a kind of inner wall of wind-power tower drum auto spray painting device according to any of the above-described claim, it is characterised in that：The spray Mouth (14) is atomizer；The spray gun (15) is Telescopic rod structure.

9. a kind of inner wall of wind-power tower drum auto spray painting device according to claim 1, it is characterised in that：The walking dolly (1) front end is provided with distance sensing device.

10. a kind of auto spray painting method of inner wall of wind-power tower drum auto spray painting device described in any of the above-described claim is used, its It is characterised by：Step 1: intake valve (6) is connected with high pressure airless spray equipment pipeline, switch board (2), walking dolly (1) are connected And the power supply of motor (17), nozzle (14) position of adjustment spray gun (15) is to the height needed, and device is in preparation work state；

Step 2: setting velocity of rotation button (20) and speed of travel button (21) start switch board (2) to the speed needed Program, walking dolly (1) travels forward, and motor (17), which is rotated, simultaneously drives hollow rotating shaft (10) to rotate；

Step 3: starting high pressure airless spray equipment, paint is pressurized and is sprayed from nozzle (14) in fan-shaped, any nozzle (14) with Hollow rotating shaft (10) is that the center of circle is moved in a circle, and under the drive of walking dolly (1), the movement locus of nozzle (14) is Helically advance.