Cooling tower glass fiber reinforced plastic bracket spraying device

Abstract

The invention relates to the technical field of cooling tower glass fiber reinforced plastic bracket spraying, and discloses a cooling tower glass fiber reinforced plastic bracket spraying device which comprises a shell, an opening is formed in one side of the shell, a steel frame positioning module used for supporting and positioning a steel frame is arranged in the opening, and a door plate rotationally arranged on the shell through a hinge is located above the opening. Through cooperative use of a plurality of modules, uniform covering of the periphery of a steel frame can be achieved, the problems of spraying omission and repeated spraying caused by difficult control of a manual spraying track are effectively solved, the paint utilization rate is increased, the steel frame can be driven to be turned over accurately, it is guaranteed that no dead angle exists in two-face spraying, and the follow-up grinding and finishing workload is reduced; and paint on the contact surface can be removed in real time, accumulation and solidification of a paint film are prevented, the cleaning difficulty and the construction cost of the supporting frame are reduced, and the automation level and the operation quality of spraying of the glass fiber reinforced plastic bracket of the cooling tower are integrally improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cooling tower glass steel bracket spraying, in particular to a cooling tower glass steel bracket spraying device. BACKGROUND

[0002] The cooling tower glass steel bracket is a new type of supporting structure made of glass fiber reinforced plastic through pultrusion process, mainly used to replace traditional cement grid plate or cast iron grate to provide support for the water spraying filler in the cooling tower. The cooling tower glass steel bracket is not simply integrally formed, but is made by a combination process of "profile pultrusion and later assembly". The profile pultrusion forms a steel frame (hereinafter referred to as steel frame).

[0003] When the cooling tower glass steel bracket is surface painted, the method of "painting first and assembling later" is generally used, which has the advantages of good coating quality, consistent appearance, high construction efficiency, low construction cost, easy maintenance and the like.

[0004] However, there are several problems:

[0005] 1. When painting the steel frame, the operation is usually carried out in a paint booth, and a support frame is used to support the steel frame. It is difficult to spray the connection between the steel frame and the support frame during spraying, and the connection needs to be painted twice. The second painting is easy to cause local paint thickness, resulting in uneven coating thickness, affecting the overall corrosion resistance and aesthetics.

[0006] 2. The traditional spraying method relies on manual operation of a handheld spray gun, which not only has high labor intensity, but also is difficult to accurately control the spraying trajectory, and is prone to omissions and re-spraying, reducing the utilization rate of paint and increasing the workload of subsequent polishing and finishing.

[0007] 3. The steel frame is easily sprayed onto the support frame during the spraying process, and the long-term accumulation of paint film on the support frame increases the difficulty of cleaning the support frame. If not cleaned in time, the paint film will solidify, which can only be removed by using chemical solvents or mechanical polishing, further increasing the construction cost and time consumption. In addition, the residual paint film fragments may fall onto the surface of the steel frame during subsequent spraying operations, forming impurity particles and affecting the final spraying quality. SUMMARY

[0008] In view of the deficiencies of the prior art, the cooling tower glass steel bracket spraying device is mainly used to solve the problem of local thick paint caused by secondary spraying, which leads to uneven coating thickness and affects the overall corrosion resistance and aesthetic appearance; the traditional spraying method mainly depends on manual operation of a handheld spray gun, which not only has high labor intensity, but also is difficult to accurately control the spraying track, and the problems of missed spraying and re-spraying are prone to occur, thereby reducing the utilization rate of paint and increasing the workload of subsequent polishing and finishing; and the long-term accumulation of paint film on the support frame increases the cleaning difficulty of the support frame, and if cleaning is not timely, the paint film will solidify, which needs to be removed by using chemical solvents or mechanical polishing, thereby further increasing the construction cost and working hours consumption.

[0009] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0010] A cooling tower glass steel bracket spraying device, comprising a shell, an opening is formed in one side of the shell, a steel frame positioning module for supporting and positioning the steel frame is arranged in the opening, a door plate is arranged above the opening and rotates on the shell through a hinge, a steel frame overturning module for overturning the steel frame is arranged at the rear end of the door plate and the shell, an annular spraying module for performing paint spraying operation on the steel frame is arranged at the top of the shell, and a cleaning module for removing paint from the contact surface between the steel frame positioning module and the annular spraying module and the steel frame is arranged between the annular spraying module and the steel frame overturning module and on the shell.

[0011] Further, the steel frame positioning module comprises a moving frame sliding between the inner walls at the bottom ends of the two sides of the shell, a plurality of support frames are fixed to the bottom inner wall of the moving frame by bolts, a plurality of first electric push rods are fixed to the lower side of the top end of the support frame by bolts, a U-shaped frame slidingly connected with the support frame is fixed to the movable end of the first electric push rod by a bolt, outwardly protruding flanges are integrally formed on the top end of the two sides of the U-shaped frame, and a resistance reduction assembly for reducing the friction of the steel frame movement is arranged on the top of the support frame.

[0012] On the basis of the foregoing scheme, the resistance reduction assembly comprises a plurality of sliding holes formed in the top of the support frame, a plug rod is inserted into the sliding hole, a spring is arranged between the plug rod and the U-shaped frame, a sliding frame is welded to the top of the plurality of plug rods, and a plurality of rollers are rotatably connected between the inner walls on the two sides of the top end of the sliding frame.

[0013] As a further scheme of the present application, a top frame is welded to the top of the support frame, a plurality of avoidance grooves are formed in the top of the top frame, the avoidance grooves are matched with the rollers, and a baffle is welded to the rear end of the U-shaped frame.

[0014] Further, the steel frame overturning module comprises a plurality of fixing seats fixed on the shell and the door plate, the top of the fixing seat is slidably connected with a sliding seat, the shell and the door plate are fixed with a plurality of second electric push rods through bolts on the opposite sides, the movable end of the second electric push rod is fixed with the sliding seat, the sliding seat is fixed with a stepping motor through a bolt on one side, the output shaft of the stepping motor is connected with a rotating frame through a key, one end of the rotating frame is fixed with a clamping frame through a bolt, a clamping groove is formed on one side of the clamping frame, and the width of the clamping groove is not less than the thickness of the middle plate of the steel frame.

[0015] On the basis of the foregoing scheme, the opposite sides of the door plate and the shell are rotatably connected with a plurality of rotating blocks sliding with the rotating frame, the inner walls on both sides of the clamping groove are bonded with elastic rubber pads, and the side edges of the clamping frame do not exceed the two horizontal plates of the steel frame.

[0016] As a further scheme of the present application, the annular spraying module comprises two hydraulic cylinders fixed on the inner wall of the top of the shell, the movable end of the hydraulic cylinder is fixed with a mounting plate through a bolt, the top of the mounting plate is provided with an annular linear motor, the upper side of the annular linear motor is provided with a mounting frame, the inner wall of one side of the mounting frame is provided with a spray head, the other end of the spray head is provided with an external hose connected with the outside, and the side of the annular linear motor is provided with an adjusting assembly for adjusting the height of the spray head.

[0017] Further, the adjusting assembly comprises a guide seat fixed on one side of the annular linear motor, and the mounting frame is slidably connected with the guide seat, the bottom inner wall of the guide seat is fixed with a third electric push rod through a bolt, and the movable end of the third electric push rod is fixed with the mounting frame.

[0018] On the basis of the foregoing scheme, the cleaning module comprises two fixing plates fixed on the top of the shell, the bottom of the fixing plate is provided with a linear motor, the bottom of the linear motor is fixed with a connecting frame through a bolt, and the upper and lower sides of the bottom end of the connecting frame are respectively fixed with an upper cleaning frame and a lower cleaning frame through a bolt.

[0019] As a further scheme of the present application, the top end of the upper cleaning frame is a first scraping point, and a collection groove for collecting waste paint is formed, the front end of the collection groove exceeds the first scraping point, the lower cleaning frame comprises two scraping frames fixed on the connecting frame, the distance between the two scraping frames is not less than the width of the steel frame, the height of the two scraping frames is not less than the height of the steel frame, and the bottom of the two scraping frames is integrally formed with a second scraping point.

[0020] Compared with the prior art, the present application provides a cooling tower glass steel bracket spraying device, which has the following beneficial effects:

[0021] 1、The present application can realize uniform coverage of the four sides of the steel frame, effectively solve the problem of missed spraying and re-spraying caused by uncontrollable manual spraying track, improve the utilization rate of paint, and drive the steel frame to accurately turn over, ensuring that both sides are sprayed without dead angles and reducing the subsequent polishing workload; it can also remove paint from the contact surface in real time to prevent paint film from accumulating and hardening, reducing the cleaning difficulty and construction cost of the support frame, and improving the automation level and operation quality of the cooling tower glass steel bracket spraying.

[0022] 2、The present application is provided with a steel frame positioning module to ensure that the steel frame is always in the spraying area, improving the stability and accuracy during spraying.

[0023] 3、The present application is provided with a drag reduction assembly to effectively reduce the frictional resistance between the steel frame and the support frame, making movement smoother and avoiding displacement of the steel frame or damage to the surface coating due to excessive resistance, thereby ensuring the continuity of the entire spraying operation and the quality of the final product.

[0024] 4、The present application is provided with a steel frame turnover module to realize synchronous clamping and turnover of both ends of the steel frame, ensuring the stress balance of the steel frame during turnover and preventing deformation caused by unilateral stress.

[0025] 5、The present application is provided with a rotating block to guide and support the rotation of the rotating frame, avoiding shaking or deviation of the rotating frame during steel frame turnover due to uneven stress, ensuring the stability and accuracy of the turnover action.

[0026] 6、The present application is provided with a ring-shaped spraying module to realize full-range and dead-angle-free spraying of the outer surface of the steel frame, avoiding the edge and corner missed spraying problem caused by straight-line trajectory in traditional manual spraying.

[0027] 7、The present application is provided with an adjusting assembly to avoid interference between the nozzle and the cleaning module during cleaning, ensuring the normal progress of subsequent spraying operations.

[0028] 8、The present application is provided with a cleaning module to prevent paint film from accumulating and hardening, reducing the cleaning difficulty and construction cost of the support frame. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 A perspective view of a cooling tower glass steel bracket spraying device is provided.

[0030] Figure 2 A cooling tower glass steel bracket spraying device Figure 1 is provided.

[0031] Figure 3 A cooling tower glass steel bracket spraying deviceFigure 1 Enlarged structural diagram of the central steel frame positioning module;

[0032] Figure 4 The present invention provides a spraying device for a cooling tower fiberglass bracket. Figure 3 Schematic diagram of the cross-sectional structure of the U-shaped frame;

[0033] Figure 5 The present invention provides a spraying device for a cooling tower fiberglass bracket. Figure 4 A schematic diagram of the localized explosion structure;

[0034] Figure 6 The present invention provides a spraying device for a cooling tower fiberglass bracket. Figure 1 Exploded view of the middle door panel and steel frame flipping module;

[0035] Figure 7 The present invention provides a spraying device for a cooling tower fiberglass bracket. Figure 6 Enlarged structural diagram of the central steel frame flipping module;

[0036] Figure 8 The present invention provides a spraying device for a cooling tower fiberglass bracket. Figure 2 Enlarged structural diagram of the central ring spraying module;

[0037] Figure 9 The present invention provides a spraying device for a cooling tower fiberglass bracket. Figure 8 A schematic diagram of the enlarged structure of a medium-sized ring linear motor;

[0038] Figure 10 The present invention provides a spraying device for a cooling tower fiberglass bracket. Figure 2 Enlarged structural diagram of the cleaning module;

[0039] Figure 11 The present invention provides a spraying device for a cooling tower fiberglass bracket. Figure 10 Enlarged structural diagram of the upper and lower cleaning frames.

[0040] In the diagram: 1. Shell; 2. Steel frame positioning module; 3. Door panel; 4. Steel frame flipping module; 5. Circular spraying module; 6. Cleaning module;

[0041] 201. Movable frame; 202. Support frame; 203. U-shaped frame; 204. Insert rod; 205. Spring; 206. First electric push rod; 207. Baffle; 208. Protruding plate; 209. Slide; 210. Roller; 211. Top frame; 212. Alignment groove;

[0042] 401. Fixed base; 402. Slide; 403. Second electric push rod; 404. Stepper motor; 405. Rotating frame; 406. Rotating block; 407. Clamp; 408. Clamping groove; 409. Elastic rubber pad;

[0043] 501. Hydraulic cylinder; 502. Mounting plate; 503. Circular linear motor; 504. Guide seat; 505. Third electric push rod; 506. Mounting bracket; 507. Nozzle; 508. External hose;

[0044] 601. Fixing plate; 602. Linear motor; 603. Connecting frame; 604. Upper cleaning frame; 6041. First scraping point; 6042. Collection trough; 605. Lower cleaning frame; 6051. Scraper frame; 6052. Second scraping point. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0046] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0047] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0048] Please see Figures 1-11As shown, a cooling tower fiberglass bracket spraying device includes a housing 1, and a heating lamp for heating is provided inside the housing 1. The heating lamp is an infrared heating lamp, and its power can be adjusted according to the characteristics of the spraying material to ensure that the coating cures quickly on the bracket surface without producing bubbles.

[0049] An opening is provided on one side of the housing 1, and a steel frame positioning module 2 for supporting and positioning the steel frame is provided inside the opening. A door panel 3 is provided above the opening and rotates on the housing 1 via a hinge. Both the door panel 3 and the rear end of the housing 1 are provided with a steel frame flipping module 4 for flipping the steel frame. An annular spraying module 5 for spraying paint on the steel frame is provided at the top of the housing 1. Between the annular spraying module 5 and the steel frame flipping module 4, a cleaning module 6 is provided on the housing 1 for removing paint from the contact surfaces of the steel frame positioning module 2, the annular spraying module 5, and the steel frame.

[0050] Based on the above, the simplified steps for using the steel frame of the fiberglass bracket are as follows:

[0051] First, the steel frame is placed inside the steel frame positioning module 2. Then, the steel frame positioning module 2 is pushed into the housing 1. The annular spraying module 5 is used to spray the steel frame around its perimeter. After spraying, a heating lamp is used to cure the sprayed paint. At the same time, the cleaning module 6 is used to clean the contact surfaces between the steel frame positioning module 2, the annular spraying module 5, and the steel frame, in order to avoid paint residue affecting the quality of subsequent spraying.

[0052] After the first layer of coating has cured, the steel frame is flipped to the other side by the steel frame flipping module 4 at the rear of the door panel 3 and the shell 1. The ring spraying module 5 is then started again to spray the uncoated surface evenly, and the heating lamp is turned on simultaneously for curing.

[0053] Throughout the spraying process, the power of the heating lamp is adjusted in real time according to the type of coating used (such as epoxy resin, polyester resin, etc.) to ensure that different coatings can be cured quickly at the optimal temperature and effectively prevent defects such as coating cracking and pinholes caused by excessively high or low temperatures.

[0054] After completing the two-sided spraying and curing, turn off the heating lamp and push the steel frame positioning module 2 out of the housing 1 to complete the steel frame spraying operation and proceed to the next process.

[0055] The ring-shaped spraying module 5 can achieve uniform coverage of the steel frame around its perimeter. Combined with adjustable-power infrared heating lamps, it ensures rapid curing of the coating and avoids the formation of air bubbles. This effectively solves the problems of missed spraying and re-spraying caused by the difficulty in controlling the trajectory of manual spraying, thus improving the utilization rate of the coating. At the same time, the steel frame flipping module 4 can drive the steel frame to flip precisely, ensuring that both sides are sprayed without dead corners and reducing the amount of subsequent grinding and repair work. The cleaning module 6 removes paint from the contact surfaces in real time during the spraying process to prevent the paint film from accumulating and solidifying, reducing the cleaning difficulty and construction cost of the support frame 202. Overall, it improves the automation level and operation quality of the spraying of the cooling tower FRP bracket.

[0056] In order to position the steel frame during the loading process;

[0057] The steel frame positioning module 2 includes a movable frame 201 that slides between the bottom ends of the inner walls on both sides of the housing 1. Multiple support frames 202 are fixed to the bottom inner wall of the movable frame 201 by bolts. Multiple first electric push rods 206 are fixed to the lower side of the top of the support frame 202 by bolts. The movable end of the first electric push rod 206 is fixed to a U-shaped frame 203 that is slidably connected to the support frame 202 by bolts. Both sides of the top of the U-shaped frame 203 have outwardly protruding convex plates 208 integrally formed. A baffle 207 is welded to the rear end of the U-shaped frame 203. The top of the support frame 202 is provided with a friction-reducing component to reduce the friction of the steel frame movement.

[0058] When the steel frame is loaded, the first electric push rod 206 is activated. The retraction of the first electric push rod 206 will drive the U-shaped frame 203 to move upward, thereby blocking the steel frame with the side plate of the U-shaped frame 203. At the same time, the baffle 207 will also block one end of the steel frame, so that the steel frame is completely located inside the U-shaped frame 203 and supported by the support frame 202. The protruding plate 208 can support the steel frame after it is flipped, preventing the steel frame from having no support point after the support point changes after flipping. This ensures that the steel frame is always within the spraying operation area, improving the stability and accuracy of the spraying process.

[0059] The design of the drag-reducing component further optimizes the movement of the steel frame on the support frame 202. When the steel frame is being loaded, the drag-reducing component can effectively reduce the frictional resistance between the steel frame and the support frame 202, making the movement smoother and preventing the steel frame from shifting or the surface coating from being damaged due to excessive resistance. This ensures the continuity of the entire spraying operation and the quality of the final product.

[0060] In order to reduce the frictional resistance between the steel frame and the support frame 202;

[0061] The drag reduction assembly includes multiple sliding holes opened on the top of the support frame 202, with insert rods 204 inserted into the sliding holes, and springs 205 provided between the insert rods 204 and the U-shaped frame 203. A slide 209 is welded to the top of the multiple insert rods 204, and multiple rollers 210 are rotatably connected between the inner walls on both sides of the top of the slide 209.

[0062] When the steel frame is placed on the support frame 202, the U-shaped frame 203 moves upward under the action of the first electric push rod 206. At this time, the U-shaped frame 203 will drive the spring 205 and the insert rod 204 to move upward, thereby pushing the slide 209 to move upward, so that the roller 210 at the top of the slide 209 contacts the bottom of the steel frame. During the process of pushing the steel frame, the roller 210 rotates to convert the sliding friction between the steel frame and the support frame 202 into rolling friction, which significantly reduces the moving resistance.

[0063] To ensure the stability of the steel frame during spraying;

[0064] A top frame 211 is welded to the top of the support frame 202. The top of the top frame 211 has multiple clearance grooves 212, which are matched with the roller 210.

[0065] When the steel frame is placed on the roller 210, the top of the roller 210 is slightly higher than the top plane of the top frame 211, so that the steel frame can be placed stably on the roller 210 and roll with it. When the U-shaped frame 203 moves downward under the drive of the first electric push rod 206, it will drive the insert rod 204 to move downward, and the slide 209 will drive the roller 210 to sink into the relief groove 212. At this time, the top plane of the top frame 211 is higher than the roller 210, and the bottom of the steel frame is in contact with the top frame 211. The plane support of the top frame 211 enhances the stability of the steel frame during the spraying process, avoids displacement of the steel frame due to the rotation of the roller 210, and ensures the accuracy of the spraying trajectory.

[0066] Spring 205 can play a certain buffering role when the steel frame is placed. When the steel frame is placed on roller 210, its weight will be transmitted to slide 209 through roller 210, which will compress spring 205 and cause the insertion rod 204 to slide downward in the sliding hole. At this time, the height of roller 210 will drop slightly to avoid deformation of roller 210 or support frame 202 due to excessive impact force when the steel frame is placed.

[0067] Meanwhile, the elastic restoring force of the spring 205 ensures that the roller 210 remains in contact with the bottom of the steel frame, ensuring the continuous effectiveness of rolling friction during the movement of the steel frame, preventing gaps between the steel frame and the roller 210 from causing sliding friction, and further improving the smoothness and stability of the steel frame loading process.

[0068] In addition, the spring constant of spring 205 can be selected according to the weight range of common steel frames to adapt to the placement requirements of steel frames of different specifications, thereby enhancing the versatility and practicality of the device.

[0069] In order to enable multiple coating surfaces of the steel frame to be coated;

[0070] The steel frame flipping module 4 includes multiple fixed seats 401 fixed on the housing 1 and the door panel 3. A slide seat 402 is slidably connected to the top of the fixed seat 401. Multiple second electric push rods 403 are fixed to the opposite sides of the housing 1 and the door panel 3 by bolts. The movable ends of the multiple second electric push rods 403 are fixed to the slide seat 402. A stepper motor 404 is fixed to one side of the slide seat 402 by bolts. A rotating frame 405 is keyed to the output shaft of the stepper motor 404. A clamp 407 is fixed to one end of the rotating frame 405 by bolts. A clamping groove 408 is opened on one side of the clamp 407, and the width of the clamping groove 408 is not less than the thickness of the steel frame middle plate.

[0071] An elastic rubber pad 409 is attached to the inner wall of the clamping groove 408 to increase the friction with the middle plate of the steel frame and prevent the steel frame from slipping and shifting during the flipping process. Both ends of the clamping groove 408 are rounded to avoid scratching the surface of the steel frame during clamping.

[0072] After the steel frame positioning module 2 transports the steel frame to the spraying position, and after the spraying is cured, the second electric push rod 403 is activated, pushing the slide 402 to move towards the steel frame, so that the clamping groove 408 is engaged in the middle plate of the steel frame, thereby clamping and fixing the steel frame.

[0073] Subsequently, the stepper motor 404 drives the rotating frame 405 to rotate the steel frame 90 degrees. The rotation angle can be precisely controlled by the motor controller to ensure that the other two sides of the steel frame can be accurately aligned with the spraying area of ​​the annular spraying module 5 after rotation.

[0074] After the flipping is completed, the second electric push rod 403 drives the slide 402 to reset, and the clamp 407 separates from the steel frame to avoid affecting subsequent spraying operations;

[0075] The steel frame flipping module 4 on the door panel 3 has the same structure and is symmetrically arranged as the steel frame flipping module 4 at the rear end of the housing 1. It can realize the synchronous clamping and flipping of both ends of the steel frame, ensuring the force balance of the steel frame during the flipping process and preventing the steel frame from deforming due to unilateral force.

[0076] It should be noted that the 404 stepper motor is a high-precision two-phase hybrid stepper motor with a step angle of 1.8 degrees. Through the microstepping driver, higher angle control accuracy can be achieved, ensuring that the steel frame flipping angle error is controlled within ±0.5 degrees. This model of motor is equipped with an encoder feedback function, which can monitor the actual rotation angle of the output shaft in real time and transmit the signal to the control system to form a closed-loop control, effectively avoiding the flipping angle deviation caused by load changes or mechanical transmission errors.

[0077] Multiple rotating blocks 406 that slide with the rotating frame 405 are rotatably connected to the opposite sides of the door panel 3 and the housing 1.

[0078] The rotating block 406 can guide and support the rotation process of the rotating frame 405, and prevent the rotating frame 405 from shaking or deviating due to uneven force when flipping the steel frame, thus ensuring the stability and accuracy of the flipping action.

[0079] The sides of the clamp 407 do not extend beyond the two horizontal plates of the steel frame, which can prevent the clamp 407 from colliding and interfering with the annular spraying module 5 or the U-shaped frame 203 during the flipping process, ensuring the smooth progress of the spraying operation. At the same time, it also avoids the clamp 407 from blocking the spraying area, ensuring that the paint can evenly cover all surfaces of the steel frame.

[0080] In order to carry out the spray painting operation on the steel frame;

[0081] The annular spraying module 5 includes two hydraulic cylinders 501 fixed to the inner wall of the top of the housing 1. The movable end of the hydraulic cylinder 501 is fixed to the mounting plate 502 by bolts. The top of the mounting plate 502 is provided with an annular linear motor 503. The top of the annular linear motor 503 is provided with a mounting bracket 506. The inner wall of one side of the mounting bracket 506 is provided with a spray head 507. The other end of the spray head 507 is provided with an external hose 508 connected to the outside. The side of the annular linear motor 503 is provided with an adjustment component for adjusting the height of the spray head 507.

[0082] The ring linear motor 503 can drive the nozzle 507 to make uniform circular motion along the ring trajectory. Combined with the steel frame flipping module 4 to flip the steel frame, it can achieve all-round spraying without dead angles on the outer circumference of the steel frame, avoiding the problem of missed spraying at the edges and corners caused by the straight trajectory in traditional manual spraying.

[0083] It should be noted that: the stator of the toroidal linear motor 503 is composed of coils and is fixed on the mounting plate 502. After being energized, it generates a magnetic field; the mover is mounted on the moving base and is a permanent magnet; the permanent magnet on the moving base is pushed by the magnetic field generated by the energized induction coil of the stator, and the moving base moves along the guide rail, thereby realizing the toroidal motion. The linear motor is located above the toroidal guide rail. Those skilled in the art can refer to the principle of magnetic levitation. The specific working principle will not be described in detail here.

[0084] In addition, the hydraulic cylinder 501 is an actuator in the hydraulic system. It achieves the telescopic function by cooperating with the hydraulic system, and achieves precise control of the telescopic displacement of the hydraulic cylinder piston rod by cooperating with magnetic switches, proximity switches or photoelectric switches. Those skilled in the art can set it according to actual needs.

[0085] When it is necessary to spray paint the steel frame, the hydraulic cylinder 501 is activated. The hydraulic cylinder 501 drives the mounting plate 502 to move downward, so that the mounting plate 502 and the support frame 202 clamp and fix the steel frame. The ring linear motor 503 drives the spray head 507 to rotate, and the painting operation around the steel frame is completed. There is no need for manual hand-held spray gun to repeatedly adjust the angle, which significantly improves the spraying efficiency.

[0086] The external hose 508 can be connected to an external paint supply system to enable continuous paint delivery, avoiding the interruption problem of frequent paint additions during traditional manual spraying.

[0087] The external hose 508 is made of high-pressure resistant flexible material, and its length can be adapted to the movement range of the ring linear motor 503 to ensure that the nozzle 507 is not affected by the pipe pulling during the ring trajectory movement, maintaining stable spraying pressure and flow. In addition, the ring linear motor 503 has a forward and reverse circulation mode, that is, it moves along the ring trajectory once and then rotates in the opposite direction once, and repeats this process to achieve periodic spraying operations and avoid the external hose from getting tangled.

[0088] In order to avoid obstructing the cleaning module 6;

[0089] The adjustment assembly includes a guide seat 504 fixed on one side of the ring linear motor 503, and a mounting bracket 506 slidably connected to the guide seat 504. A third electric push rod 505 is fixed to the bottom inner wall of the guide seat 504 by bolts, and the movable end of the third electric push rod 505 is fixed to the mounting bracket 506.

[0090] The third electric push rod 505 is activated to extend, thereby causing the mounting bracket 506 to slide on the guide seat 504, which in turn raises the nozzle 507 above the mounting plate 502, making the bottom of the mounting plate 502 completely exposed so that it can be cleaned by the cleaning module 6. This avoids interference between the nozzle 507 and the cleaning module 6 during the cleaning process. After cleaning is completed, the third electric push rod 505 retracts, causing the nozzle 507 to descend to the spraying position, ensuring the normal progress of subsequent spraying operations.

[0091] In order to clean the contact surfaces between the steel frame positioning module 2, the annular spraying module 5, and the steel frame;

[0092] The cleaning module 6 includes two fixing plates 601 fixed to the top of the housing 1. A linear motor 602 is provided at the bottom of the fixing plate 601. A connecting frame 603 is fixed to the bottom of the linear motor 602 by bolts. An upper cleaning frame 604 and a lower cleaning frame 605 are respectively fixed to the upper and lower sides of the bottom of the connecting frame 603 by bolts.

[0093] Start the linear motor 602, which drives the connecting frame 603 to move horizontally along the length of the housing 1. The upper cleaning frame 604 and the lower cleaning frame 605 move synchronously with the connecting frame 603.

[0094] The upper cleaning frame 604 scrapes the bottom plane of the mounting plate 502 of the annular spraying module 5 to remove paint particles splashed during the spraying process.

[0095] The lower cleaning frame 605 scrapes the surface of the protruding plate 208 of the U-shaped frame 203. During the movement, it scrapes off the residual paint film on the protruding plate 208 to prevent it from hardening and forming hard blocks that would affect the subsequent positioning of the steel frame.

[0096] Paint debris cleaned by the lower cleaning rack 605 will fall into the collection box (not shown in the figure) through the pre-set discharge port at the bottom of the housing 1, which is convenient for subsequent centralized treatment and avoids debris accumulation and pollution of the internal environment of the equipment;

[0097] The movement of the cleaning module 6 can cover all contact surfaces of the steel frame positioning module 2 and the annular spraying module 5, ensuring that the cleanliness of the contact surfaces meets the requirements of continuous spraying operations.

[0098] It should be noted that: Linear motor 602 is a coreless U-shaped groove linear motor. Its primary coil is encapsulated in epoxy resin into an integrated structure, and the secondary is a high-precision magnetic guide rail, fixed to the bottom of the fixing plate 601. The surface of the guide rail is covered with a wear-resistant coating, which can reduce the wear of the magnets during long-term operation and extend its service life. This linear motor is equipped with a high-precision grating ruler feedback system with a resolution of up to 1μm. It can transmit the position information of the connecting frame 603 to the control system in real time, realize full closed-loop position control, and ensure that the movement trajectory error of the upper cleaning frame 604 and the lower cleaning frame 605 is controlled within ±0.1mm, ensuring that no cleaning area is missed. At the same time, the motor drive controller supports multi-speed operation mode, which can automatically adjust the movement speed according to the degree of contamination of different contact surfaces. The speed is reduced in areas with thick paint film to enhance the scraping effect, and the speed is increased in areas with cleaner surfaces to save operation time, thus optimizing the overall cleaning efficiency and energy consumption cost.

[0099] The top of the upper cleaning frame 604 is the first scraping point 6041, and a collection trough 6042 for collecting waste paint is provided. The front end of the collection trough 6042 extends beyond the first scraping point 6041. This design allows the waste paint scraped off when the upper cleaning frame 604 scrapes off the paint on the bottom of the mounting plate 502 to fall directly into the collection trough 6042 under inertia, effectively preventing the waste paint from scattering and contaminating other parts.

[0100] The scraping surface of the upper cleaning frame 604 is made of high-strength wear-resistant alloy material and is precision ground to ensure a tight fit with the bottom plane of the mounting plate 502, thereby improving the scraping effect and extending the service life.

[0101] The lower cleaning frame 605 includes two scrapers 6051 fixed on the connecting frame 603. The scraping ends of the two scrapers 6051 are both second scraping points 6052. The cross-section of the second scraping point 6052 is a triangular acute angle structure, which can easily cut into the paint film on the surface of the convex plate 208, improving the scraping efficiency. The edge of the scraping end is blunted to prevent scratching the metal surface of the convex plate 208. Side plates are also provided on both sides of the scraper 6051 to block paint debris that splashes to both sides during the scraping process, further improving the cleanliness of the cleaning.

[0102] This structural design allows the lower cleaning frame 605 to simultaneously clean the protruding plates 208 on both sides of the U-shaped frame 203 during movement, avoiding uneven distribution of residual paint caused by cleaning on one side.

[0103] The height of the two scrapers 6051 is not lower than the height of the steel frame. The height design of the scraper 6051 ensures that even when the steel frame is high, the residual paint on its surface can be effectively scraped off, further expanding the cleaning range and ensuring the overall cleanliness of the surface of the convex plate 208.

[0104] Meanwhile, the distance between the two scrapers 6051 is set to be no less than the width of the steel frame. This avoids collisions with the steel frame during the cleaning process and allows for thorough cleaning of the edge area of ​​the convex plate 208, preventing the coating from accumulating and solidifying at the edges. This ensures that the steel frame can fit tightly against the surface of the convex plate 208 when it is placed later, maintaining good support stability.

[0105] It should be noted that the first electric push rod 206, the second electric push rod 403, and the third electric push rod 505 can all be used with magnetic switches, proximity switches, or photoelectric switches to achieve precise control of the push rod extension and retraction displacement. Those skilled in the art can set them according to actual needs.

[0106] The present invention is used in the following steps:

[0107] S1: Start the first electric push rod 206. The retraction of the first electric push rod 206 will drive the U-shaped frame 203 to move upward. The U-shaped frame 203 will drive the spring 205 and the insert rod 204 to move upward, thereby pushing the slide 209 to move upward, so that the top height of the roller 210 is slightly higher than the top plane of the top frame 211. At this time, the steel frame can be placed along the roller 210, and the steel frame can be placed between the U-shaped frame 203 and the support frame 202.

[0108] S2: Pushing the movable frame 201 can move the steel frame into the housing 1;

[0109] S3: Start hydraulic cylinder 501. Hydraulic cylinder 501 drives mounting plate 502 to move downward, so that mounting plate 502 and support frame 202 clamp and fix the steel frame.

[0110] S4: Start the first electric push rod 206 to extend and drive the U-shaped frame 203 to reset, revealing the steel frame. Then, drive the spray head 507 to rotate through the ring linear motor 503 to complete the painting operation around the steel frame and cure the paint on the steel frame.

[0111] S5: After the spraying around the steel frame is completed, the hydraulic cylinder 501 drives the mounting plate 502 to reset, and at the same time starts the linear motor 602, which drives the connecting frame 603 to move horizontally along the length of the housing 1. The upper cleaning frame 604 and the lower cleaning frame 605 move synchronously with the connecting frame 603.

[0112] S6: The upper cleaning frame 604 scrapes the bottom plane of the mounting plate 502 of the annular spraying module 5 to remove paint particles splashed during the spraying process, and the lower cleaning frame 605 scrapes the surface of the protruding plate 208 of the U-shaped frame 203 to remove the paint film remaining on the protruding plate 208.

[0113] S7: After cleaning and curing are completed, the second electric push rod 403 is started, pushing the slide 402 to move towards the steel frame, so that the clamping groove 408 is inserted into the middle plate of the steel frame to clamp and fix the steel frame. Then the stepper motor 404 drives the rotating frame 405 to rotate the steel frame 90 degrees, so that the other two sides of the steel frame are aligned with the spraying area of ​​the annular spraying module 5.

[0114] S8: Start the hydraulic cylinder 501. The hydraulic cylinder 501 drives the mounting plate 502 to move downward and starts the first electric push rod 206. The retraction of the first electric push rod 206 will drive the U-shaped frame 203 to move upward, so that the mounting plate 502 and the convex plate 208 clamp and fix the steel frame.

[0115] S9: The nozzle 507 is moved again by the ring linear motor 503 to complete the painting operation on the other two sides of the steel frame and to cure the paint on the steel frame.

[0116] S10: Repeat steps S5 and S6 to complete the cleaning of mounting plate 502 and protruding plate 208;

[0117] S11: After completing the above steps, push the steel frame positioning module 2 out of the housing 1 to complete the steel frame painting operation and proceed to the next process.

[0118] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0119] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A cooling tower fiberglass support spraying device comprising a housing (1), characterized in that, The shell (1) is provided with an opening on one side, and a steel frame positioning module (2) for supporting and positioning the steel frame is arranged in the opening. A door plate (3) is arranged above the opening and is rotatable on the shell (1) through a hinge. The door plate (3) and the rear end of the shell (1) are both provided with a steel frame overturning module (4) for overturning the steel frame. An annular spraying module (5) for performing paint spraying on the steel frame is arranged on the top of the shell (1). A cleaning module (6) for removing paint from the contact surface between the steel frame positioning module (2) and the annular spraying module (5) and the steel frame is arranged on the shell (1) between the annular spraying module (5) and the steel frame overturning module (4).

2. A cooling tower fiberglass support spray painting apparatus as claimed in claim 1, wherein, The steel frame positioning module (2) comprises a moving frame (201) sliding between the bottom ends of the inner walls of the two sides of the shell (1). The bottom inner wall of the moving frame (201) is fixedly connected with a plurality of support frames (202). The lower side of the top end of each support frame (202) is fixedly connected with a first electric push rod (206). The movable end of each first electric push rod (206) is fixedly connected with a U-shaped frame (203) in sliding connection with the support frame (202). The top end of each U-shaped frame (203) is integrally formed with an outwardly protruding flange (208) on each side. The top of each support frame (202) is provided with a resistance reduction assembly for reducing the friction of the steel frame.

3. A cooling tower fiberglass support spray painting apparatus as defined in claim 2 wherein, The resistance reduction assembly comprises a plurality of sliding holes formed in the top of the support frame (202). A plug rod (204) is inserted into each sliding hole. A spring (205) is arranged between each plug rod (204) and the U-shaped frame (203). The top of each plug rod (204) is welded with a sliding frame (209). A plurality of rolling shafts (210) are rotatably connected between the inner walls of the top end of the sliding frame (209) on both sides.

4. A cooling tower fiberglass support spray device as defined in claim 3 wherein, The top of each support frame (202) is welded with a top frame (211). A plurality of avoidance grooves (212) are formed in the top of the top frame (211). The avoidance grooves (212) are matched with the rolling shafts (210). The rear end of each U-shaped frame (203) is welded with a baffle (207).

5. A cooling tower fiberglass support spray device as defined in claim 1 wherein, The steel frame overturning module (4) comprises a plurality of fixing seats (401) fixed on the shell (1) and the door plate (3). The top of each fixing seat (401) is slidingly connected with a sliding seat (402). The opposite sides of the shell (1) and the door plate (3) are both fixedly connected with a plurality of second electric push rods (403). The movable ends of the second electric push rods (403) are fixed with the sliding seat (402). One side of the sliding seat (402) is fixedly connected with a stepping motor (404). The output shaft of the stepping motor (404) is key-connected with a rotating frame (405). One end of the rotating frame (405) is fixedly connected with a clamping frame (407). A clamping groove (408) is formed in one side of the clamping frame (407). The width of the clamping groove (408) is not less than the thickness of the middle plate of the steel frame.

6. A cooling tower fiberglass support spray device as defined in claim 5 wherein, The opposite sides of the door plate (3) and the shell (1) are both rotatably connected with a plurality of rotating blocks (406) in sliding connection with the rotating frame (405). The inner walls on both sides of the clamping groove (408) are both bonded with elastic rubber pads (409). The side edges of the clamping frame (407) do not exceed the two horizontal plates of the steel frame.

7. A cooling tower fiberglass support spray device as described in claim 1, wherein, The annular spraying module (5) comprises two hydraulic cylinders (501) fixed on the inner wall of the top of the shell (1), the movable end of the hydraulic cylinder (501) is fixedly connected with a mounting plate (502), the top of the mounting plate (502) is provided with an annular linear motor (503), the upper side of the annular linear motor (503) is provided with a mounting rack (506), the inner wall of one side of the mounting rack (506) is provided with a spray head (507), the other end of the spray head (507) is provided with an external hose (508) connected with the outside, and the side of the annular linear motor (503) is provided with an adjusting assembly for adjusting the height of the spray head (507).

8. A cooling tower fiberglass support spray device as defined in claim 7 wherein, The adjusting assembly comprises a guide seat (504) fixed on the side of the annular linear motor (503), and the mounting rack (506) is in sliding connection with the guide seat (504), the bottom inner wall of the guide seat (504) is fixedly connected with a third electric push rod (505), and the movable end of the third electric push rod (505) is fixed with the mounting rack (506).

9. A cooling tower fiberglass support spray device as defined in claim 1 wherein, The cleaning module (6) comprises two fixed plates (601) fixed on the top of the shell (1), the bottom of the fixed plate (601) is provided with a linear motor (602), the bottom of the linear motor (602) is fixedly connected with a connecting frame (603), and the upper and lower sides of the bottom end of the connecting frame (603) are fixedly connected with an upper cleaning frame (604) and a lower cleaning frame (605) respectively.

10. A cooling tower fiberglass support spray device as defined in claim 9 wherein, The top end of the upper cleaning frame (604) is a first scraping point (6041), and a collecting groove (6042) for collecting waste paint is formed, the front end of the collecting groove (6042) exceeds the first scraping point (6041), and the lower cleaning frame (605) comprises two scraping frames (6051) fixed on the connecting frame (603), the distance between the two scraping frames (6051) is not less than the width of the steel frame, the height of the two scraping frames (6051) is not less than the height of the steel frame, and the bottom of the two scraping frames (6051) is integrally formed with a second scraping point (6052).

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