A steel structure surface spraying equipment

Abstract

The present invention relates to the technical field of steel component spraying, and in particular to a steel structure surface spraying equipment. The present invention comprises: a pretreatment module: pickling and rust removal of steel structure; a flushing module: flushing the surface of the steel structure after pickling; a spraying module: spraying the surface of the steel structure after flushing; a conveying module: transporting the steel structure to the pretreatment module, the flushing module, and the spraying module in sequence; the spraying module comprises: a driving mechanism for driving the steel structure to move to the lower feed end, and a spraying mechanism for spraying the surface of the steel structure; the present invention can automatically adjust the spraying height and spraying angle of the spray gun according to the model of the steel structure.

Description

Technical Field

[0001] The invention relates to the technical field of steel component spraying, and in particular to a steel structure surface spraying device. Background Art

[0002] In a warehouse or store, the steel structure shelves placed against the wall do not need to be sprayed on the side against the wall, but the side exposed to the outside needs to be sprayed to prevent rust and corrosion, and also make the shelf look neater and more beautiful. For example, the shelves against the wall in a supermarket have their backs close to the wall, and only the front and sides are exposed to the outside, so only the front and sides need to be sprayed.

[0003] The current spraying equipment usually cannot adaptively adjust the spraying range according to the different thickness of steel structures. For thinner steel structures, excessive spraying of paint may occur, which not only causes waste of paint, but also may affect the subsequent processing and aesthetics; for example, for the side of a shelf with a smaller thickness, the paint may accumulate at the edge due to the large spraying range, forming a sagging phenomenon, which affects the appearance quality of the shelf. For thicker steel structures, the equipment may not be able to fully cover the entire surface, resulting in a missed spraying area, which makes some areas of the steel structure not effectively protected and easily eroded by external environmental factors such as humid air and dust, thereby reducing the service life of the steel structure; for example, for thicker shelves, the side and front areas are relatively large, and the existing spraying equipment often cannot accurately and evenly spray the paint to various parts, resulting in a thin paint layer in some areas, which cannot play a good anti-rust and anti-corrosion role. In addition, since the spraying range cannot be adaptively adjusted, operators often need to make manual adjustments based on experience, which not only increases the complexity and difficulty of the operation, but also reduces work efficiency. Moreover, the accuracy of manual adjustment is difficult to guarantee, and errors are prone to occur, further affecting the spraying quality.

[0004] The invention patent with application number CN202310872833.6 relates to a multi-angle spraying device, including: a box; a raw material conveying mechanism; a spray gun, which is arranged in the box, and the spray gun is connected to the raw material conveying mechanism through a conveying pipe; a driving mechanism, which is connected to the box, and the driving mechanism is configured to drive the spray gun to move at least in a first direction; and a transmission mechanism, which is connected to the driving mechanism, and the transmission mechanism includes a first transmission assembly and a second transmission assembly; the first transmission assembly is configured to connect the spray gun and the driving mechanism, and the second transmission assembly is configured to adjust the conveying pipe so that the conveying pipe cooperates with the movement of the spray gun. This application sprays the workpiece from multiple angles, and the transmission mechanism includes a first transmission assembly and a second transmission assembly, so that the transmission mechanism can adjust and arrange the conveying pipe by transmission or follow-up while transmitting the driving force of the driving mechanism to move the spray gun. However, although this patent can spray from different angles, it cannot adaptively adjust the spray range of the spray gun.

[0005] Therefore, it is necessary to provide a new technical solution to overcome the above-mentioned defects. Summary of the invention

[0006] The purpose of the present invention is to provide a steel structure surface spraying equipment which can effectively solve the above technical problems.

[0007] In order to achieve the purpose of the present invention, the following technical scheme is adopted:

[0008] A steel structure surface spraying device comprises: a pretreatment module: pickling and rust removal of the steel structure;

[0009] Flushing module: flushing the surface of the steel structure after pickling;

[0010] Spraying module: spraying the surface of the steel structure after flushing;

[0011] Transport module: transport the steel structure to the pretreatment module, the flushing module, and the spraying module in sequence;

[0012] The spraying module includes: a driving mechanism for driving the steel structure to move toward the lower feed end, and a spraying mechanism for spraying the surface of the steel structure;

[0013] The spraying mechanism comprises: a spray gun, a bracket for mounting the spray gun, a first motor fixedly mounted on the bracket, and a second motor for driving the spray gun to rise and fall along the bracket;

[0014] The spraying angle of the spray gun is adjusted by the first motor, or the height of the spray gun is adjusted by the second motor;

[0015] The spraying mechanism further includes: a controller, the controller being electrically connected to the first motor and the second motor respectively;

[0016] The controller adjusts the spraying angle or height of the spray gun based on the model of the steel structure, as follows:

[0017] Preset steel structure models in the database;

[0018] The controller extracts the model of the steel structure to be sprayed, and extracts the preset spraying height and preset spraying angle corresponding to the model from the database;

[0019] The controller extracts the real-time height and real-time angle of the spray gun;

[0020] The controller adjusts the real-time spraying height to the preset spraying height, or adjusts the real-time angle to the preset spraying angle based on the model of the steel structure.

[0021] Furthermore, the spraying mechanism further includes: a first conveyor belt, and a second conveyor belt cooperating with the first conveyor belt to transport the steel structure;

[0022] a third conveyor belt disposed on a material discharge side of the first conveyor belt, and a fourth conveyor belt disposed on a material discharge side of the second conveyor belt;

[0023] The conveying directions of the first conveyor belt, the second conveyor belt and the third conveyor belt are the same; the conveying speed of the third conveyor belt is greater than that of the fourth conveyor belt, and the conveying directions are opposite.

[0024] Furthermore, the spray gun is provided with a pressure sensor for detecting the pressure of the spray gun, and a flow sensor for detecting the flow in the spray gun; the pressure sensor and the flow sensor are electrically connected to the controller respectively;

[0025] The controller extracts the pressure value measured by the pressure sensor and the flow rate measured by the flow sensor respectively;

[0026] The controller uses a pressure-flow relationship method to determine the blockage coefficient of the spray gun, and fine-tunes the height or angle of the spray gun based on the blockage coefficient.

[0027] Furthermore, assuming that the vertical height of the spray gun is h, the distance between the spray gun and the steel structure is L, the spray gun angle is α, and the radius of the spray range is r, then L=r / tan(α / 2);

[0028] Extract the model of the steel structure to be sprayed, and adjust the spraying according to the model, assuming that the width of the steel structure to be sprayed is W;

[0029] When adjusting the height of the spray gun according to the width W of the steel structure, in order to cover the width of the steel structure, it is necessary to meet (Formula 1); According to the above formula 1, we can get (Formula 2);

[0030] When adjusting the angle of the spray gun according to the width W of the steel structure, in order to cover the width of the steel structure, it is necessary to meet (Formula 3).

[0031] Further, the pretreatment module includes: a pickling tank and a heating tank;

[0032] The pickling tank contains a pickling solution, wherein the pickling solution is mixed with sand and gravel;

[0033] A filter screen is provided in the pickling tank;

[0034] A liquid outlet is provided below the filter screen, and the liquid outlet is connected to the heating pool;

[0035] A centrifugal pump is installed on the top of the heating pool, and the liquid outlet end of the centrifugal pump is connected to a swinging piece and a stirring component for stirring the pickling liquid and gravel.

[0036] Furthermore, the swinging member includes: a sliding shell, a rotating blade rotatably mounted on the sliding shell, a cam coaxially connected to the rotating blade, a movable rod hinged to the cam, and the other end of the movable rod is connected to a liquid outlet pipe; the liquid outlet pipe is slidably connected to the sliding shell.

[0037] Furthermore, the stirring assembly includes: a cleaning member connected to the liquid outlet pipe, a fan blade that drives the cleaning member to rotate, a support seat that is slidably connected to the bottom of the cleaning member, a spring fixedly installed between the cleaning member and the support seat, and the support seat is slidably installed at the bottom of the pickling tank through the filter.

[0038] Furthermore, the cleaning member includes: a circular brush, a mounting shell rotatably connected to the circular brush coaxially, and a fan blade rotatably mounted inside the mounting shell and coaxially connected to the circular brush.

[0039] Furthermore, the conveying module includes: a crossbeam arranged above the pickling tank, a lifting trolley installed on the crossbeam, a reel rotatably installed on the lifting trolley, a third motor driving the reel to rotate, a steel wire rope wound on the reel, and a hook connected to the movable end of the steel wire rope.

[0040] Compared with the prior art, the present invention has the following beneficial effects: the present invention can automatically adjust the spraying height and spraying angle of the spray gun according to the model of the steel structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0042] Figure 1 It is a schematic axial view of a steel structure surface spraying device according to the present invention;

[0043] Figure 2 It is a structural schematic diagram of a steel structure surface spraying equipment of the present invention;

[0044] Figure 3 This invention is a steel structure surface spraying equipment Figure 2 A partial enlarged view of part A;

[0045] Figure 4 This is a structural schematic diagram of a pretreatment module of a steel structure surface spraying equipment according to the present invention;

[0046] Figure 5 This invention is a steel structure surface spraying equipment Figure 4 A partial enlarged view of part B;

[0047] Figure 6 This is a structural schematic diagram of a conveying module of a steel structure surface spraying equipment according to the present invention;

[0048] Figure 7 This is a schematic diagram of the structure of a cleaning component of a steel structure surface spraying equipment of the present invention;

[0049] Figure 8 This is a cross-sectional view of a cleaning component of a steel structure surface spraying equipment according to the present invention;

[0050] Fig. 9 This is a schematic diagram of the internal structure of a swinging member of a steel structure surface spraying equipment according to the present invention;

[0051] Fig.10 It is a structural schematic diagram of a spraying mechanism of a steel structure surface spraying equipment of the present invention;

[0052] Fig.11 The present invention is a schematic diagram of a steel structure surface spraying device.

[0053] In the figure: 1, pretreatment module; 2, washing module; 3, spraying module; 4, conveying module; 41, crossbeam; 42, lifting trolley; 43, reel; 44, third motor; 45, wire rope; 46, hook; 11, pickling tank; 12, heating tank; 111, filter screen; 121, centrifugal pump; 122, swinging member; 123, stirring assembly; 1221, sliding shell; 1222, rotating blade; 1223, cam; 1224, movable rod; 1225, outlet Liquid pipe; 1231, cleaning part; 1232, fan blade; 1233, support seat; 1234, spring; 12311, round brush; 12312, mounting shell; 21, flushing tank; 22, water gun; 31, spray mechanism; 32, first conveyor belt; 33, second conveyor belt; 34, third conveyor belt; 35, fourth conveyor belt; 51, detection camera; 311, spray gun; 312, first motor; 313, bracket; 314, second motor; 52, controller. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are partial embodiments of the present invention, rather than all embodiments.

[0055] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention. When a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a centered component. When a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centered component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a centered component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0056] like Figures 1 to 11 As shown, the present invention is a steel structure surface spraying equipment, including: a pretreatment module 1: pickling and rust removal of the steel structure; a flushing module 2: flushing the surface of the steel structure after the steel structure is pickled; a spraying module 3: spraying the surface of the steel structure after flushing; a conveying module 4: transporting the steel structure to the pretreatment module 1, the flushing module 2, and the spraying module 3 in sequence.

[0057] The conveying module 4 includes: a beam 41 arranged above the pickling tank 11, a lifting trolley 42 installed on the top of the beam 41, a drum 43 rotatably installed on the lifting trolley 42, a third motor 44 driving the drum 43 to rotate, a steel wire rope 45 wound around the drum 43, and a hook 46 connected to the movable end of the steel wire rope 45; the hook 46 is used to lift the steel components to facilitate the pickling of the steel components in the pickling tank 11, and after pickling, the pickled steel components are lifted to the cleaning module.

[0058] The pretreatment module 1 comprises: a pickling tank 11 and a heating tank 12 which are connected to each other; the pickling tank 11 contains pickling liquid mixed with gravel; a filter screen 111 is arranged at the bottom of the pickling tank 11 for filtering impurities generated during the pickling process and gravel in the pickling liquid; a liquid outlet is arranged below the filter screen 111, and the liquid outlet is connected to the heating tank 12; an electric heating rod or a heater is arranged in the heating tank 12 to heat the filtered pickling liquid to improve the pickling efficiency.

[0059] A centrifugal pump 121 is installed on the top of the heating tank 12, and the centrifugal pump 121 is a corrosion-resistant centrifugal pump 121; the liquid inlet end of the centrifugal pump 121 is connected to the heating tank 12, the liquid outlet end of the centrifugal pump 121 is connected to a swing member 122, and the liquid outlet end of the swing member 122 is connected to a stirring component 123; the stirring component 123 is used to stir the solution in the pickling tank 11.

[0060] The swinging member 122 includes: a sliding shell 1221, a rotating blade 1222 rotatably installed on the liquid inlet end of the sliding shell 1221, a cam 1223 coaxially connected to the rotating blade 1222, a movable rod 1224 hinged to the cam 1223, and the other end of the movable rod 1224 is fixedly connected to the liquid outlet pipe 1225; the liquid outlet pipe 1225 is slidably connected to the liquid outlet end of the sliding shell 1221.

[0061] The stirring assembly 123 includes: a cleaning member 1231 connected to the liquid outlet pipe 1225, a fan blade 1232 that drives the cleaning member 1231 to rotate, a support seat 1233 that is slidably connected to the bottom of the cleaning member 1231, a spring 1234 fixedly installed between the cleaning member 1231 and the support seat 1233, and the support seat 1233 is slidably installed at the bottom of the pickling tank 11 through the filter screen 111; a straight groove matching the support seat 1233 is opened on the filter screen. In order to prevent the mixed gravel or reactants in the pickling liquid from flowing into the heating tank 12 through the straight groove, a retractable soft film can be installed between the straight groove and the support seat 1233, such as a retractable film made of polytetrafluoroethylene material.

[0062] The cleaning member 1231 includes: a circular brush 12311, a mounting shell 12312 coaxially rotatably connected to the circular brush 12311, and a fan blade 1232 rotatably mounted inside the mounting shell 12312 and coaxially connected to the circular brush 12311; the liquid inlet end of the mounting shell 12312 is connected to the liquid outlet pipe 1225; and a liquid outlet hole is provided on the top of the circular brush 12311.

[0063] When the steel structure is lifted to the pickling tank 11 for pickling by the hook 46, the centrifugal pump 121 is started, and the centrifugal pump 121 extracts the heated pickling liquid from the heating tank 12, and the pickling liquid flows through the swinging member 122 and the stirring assembly 123 in sequence; when the pickling liquid flows through the swinging member 122, the high-speed flowing pickling liquid drives the rotating blade 1222 to rotate rapidly, and then drives the cam 1223 to rotate synchronously, thereby driving the swing rod to swing; when the pickling liquid flows through the stirring assembly 123, it drives the fan blade 1232 to rotate rapidly, and then drives the circular brush 12311 to rotate, so that the surface of the steel structure can be cleaned; because the liquid outlet pipe 122 5 is connected to the cleaning member 1231, so that when the swinging rod swings, the liquid outlet pipe 1225 is driven to swing, and then the circular brush 12311 is rotated and swung, so that the attachments produced by pickling on the surface of the steel structure can be cleaned and wiped, and the gaps between adjacent circular brushes 12311 can be avoided from being cleaned, and the gravel can be made to flow quickly with the pickling liquid to further clean the attachments on the surface of the steel structure; at the same time, the pickling liquid flows out from the liquid outlet hole of the circular brush 12311 and directly acts on the surface of the steel structure, so that the heated pickling liquid can be fully utilized, the heating cost can be saved, and the pickling liquid can also be used to flush the surface of the steel structure.

[0064] Flushing module 2: flushing the surface of the steel structure after pickling to remove residual acid and reactants for easy spraying; the flushing module 2 includes: a flushing tank 21, a water gun 22 installed on the top of the flushing tank 21, and the water gun 22 is used to spray water to the steel structure.

[0065] Spraying module 3: spraying the surface of the steel structure after flushing; after flushing, the residual moisture on the surface of the steel structure can be naturally dried, baked, or blown dry.

[0066] The spraying module 3 comprises: a driving mechanism for driving the steel structure to move toward the lower feed end; and a spraying mechanism 31 for spraying paint or powder onto the surface of the steel structure.

[0067] The driving mechanism includes: a first conveyor belt 32, a second conveyor belt 33 symmetrically arranged with the first conveyor belt 32, a third conveyor belt 34 located at the unloading end of the first conveyor belt 32, and a fourth conveyor belt 35 located at the unloading end of the second conveyor belt 33; the conveying directions of the first conveyor belt 32, the second conveyor belt 33, and the third conveyor belt 34 are the same; the conveying directions of the third conveyor belt 34 and the fourth conveyor belt 35 are opposite, and the conveying speed of the third conveyor belt 34 is greater than the conveying speed of the fourth conveyor belt 35; the steel structure is placed on the first conveyor belt 32 and the second conveyor belt 33 by a hook 46 Then, the steel structure moves along the first conveyor belt 32 and the second conveyor belt 33 toward the feed end. During the movement, the spraying mechanism 31 sprays paint on the surface of the steel structure. After the spraying is completed, the steel structure slides onto the third conveyor belt 34 and the fourth conveyor belt 35. Then, the steel structure is transported along the conveying direction of the third conveyor belt 34 while rotating due to the speed difference between the third conveyor belt 34 and the fourth conveyor belt 35. During the rotation, the steel structure switches from the horizontal direction to the vertical direction. The horizontal direction is convenient for spraying, and the vertical direction is convenient for placement using forklifts and other equipment. The horizontal direction refers to the posture when the length direction of the steel structure is parallel to the feed direction.

[0068] The spraying mechanism 31 includes: a detection camera 51, multiple spray guns 311 for spraying paint in the direction of the first conveyor belt 32 or the second conveyor belt 33, a bracket 313 for installing the spray gun 311, a first motor 312 for adjusting the rotation angle of the spray gun 311, and a second motor 314 for driving the spray gun 311 to rise and fall; the first motor 312 is installed on the bracket 313; a slider is slidably installed on the bracket 313, the spray gun 311 is installed on the slider, and the output end of the second motor 314 is threadedly connected to the slider; the detection camera 51 can be installed on the bracket 313; the motor rotates to drive the bracket 313 to slide up and down along the slide rail, thereby adjusting the height of the spray gun 311.

[0069] The spraying mechanism 31 further includes: a controller 52, which is preferably a PLC controller 52; the controller 52 is electrically connected to the first motor 312 and the second motor 314 respectively; the controller 52 adjusts the spraying angle and height of the spray gun 311 based on the model of the steel structure, as follows:

[0070] Preset the steel structure model in the database, and set the spraying parameters for different models, such as spraying height, spraying angle, spraying pressure, etc.

[0071] The controller 52 extracts the model of the steel structure to be sprayed, and extracts the preset spraying height and preset spraying angle corresponding to the model from the database; wherein, the model of the steel structure to be sprayed can be manually entered or detected by a sensor. For example, a photoelectric sensor can be used to detect the size of the steel structure, and then the measured size is matched with the size in the database.

[0072] The controller 52 extracts the real-time height and real-time angle of the spray gun 311; the controller 52 adjusts the real-time spraying height to the preset spraying height, or adjusts the real-time spraying angle to the preset spraying angle based on the model of the steel structure.

[0073] Since the spray gun 311 may become clogged after long-term use, spray leakage may occur when spraying is performed using predetermined spray parameters. When the clog is minor, the above problem can be solved by adjusting the spray parameters. When the clog is serious, you can consider cleaning or replacing the spray gun 311.

[0074] A pressure sensor for detecting the pressure of the spray gun 311 and a flow sensor for detecting the flow rate in the spray gun 311 are provided in the spray gun 311; the pressure sensor and the flow sensor are electrically connected to the controller 52 respectively; the controller 52 extracts the pressure value measured by the pressure sensor and the flow rate measured by the flow sensor respectively; the controller 52 uses the pressure-flow relationship method to determine the blockage coefficient of the spray gun 311, and fine-tunes the height or angle of the spray gun 311 based on the blockage coefficient.

[0075] The clogging coefficient k of the spray gun 311 is determined by the pressure-flow relationship method, k=Q / Q0; Q represents the flow rate when clogging occurs; Q0 represents the flow rate when no clogging occurs.

[0076] Assume that the vertical height of the spray gun 311 is h, the distance between the spray gun 311 and the steel structure is L, the spray gun angle is α, and the radius of the spray range is r, then L=r / tan(α / 2); the area of ​​the spray range S=πL 2 tan 2 α / 2; the vertical height h is the relative height between the spray gun 311 and the steel structure. For example, a reference object may be set, such as setting the bracket 313 as a reference object. The vertical height of the spray gun 311 can be obtained by the sum of the lifting height of the spray gun 311 and the vertical distance of the bracket 313 from the first conveyor belt 32 or the second conveyor belt by knowing the lifting height of the spray gun 311 and the thickness of the steel structure.

[0077] Extract the model of the steel structure to be sprayed, and adjust the spraying height or angle of the spray gun according to the model, assuming that the width of the steel structure to be sprayed is W;

[0078] When adjusting the height of the spray gun according to the width W of the steel structure, in order to cover the width of the steel structure, it is necessary to meet (Formula 1); According to the above formula, we can get (Formula 2);

[0079] When adjusting the angle of the spray gun according to the width W of the steel structure, in order to cover the width of the steel structure, it is necessary to meet (Formula 3);

[0080] Since the models of steel structures to be sprayed in a batch are the same, there is no need to reset the height or angle of the spray gun 311 after each steel structure is sprayed. Instead, when a new model of steel structure appears, the height or angle of the spray gun 311 is adjusted. At this time, adjustments should be made based on the previous model; the width of the new steel structure is set to W1.

[0081] If the width of the steel structure changes significantly, for example, from a narrow steel structure to a very wide steel structure, it is prioritized to adjust the height, because the adjustment of the height has a more direct impact on the radius of the painting range, and can quickly expand or reduce the lateral range of the paint coverage, ensuring that the entire width of the steel structure can be covered by the paint; if the width of the steel structure changes slightly, fine-tuning the angle may be sufficient to meet the coverage requirements, then it is prioritized to adjust the angle, because the angle adjustment is relatively simple and may have less impact on the overall painting range; the threshold range for the change in the width of the steel structure can be manually set. When it exceeds the threshold range, the height is prioritized to be adjusted; when it does not exceed the threshold range, the angle is prioritized to be adjusted.

[0082] When adjusting the height of the spray gun 311, if W1>W, to meet the coverage width requirement, the new spray gun height h1 needs to satisfy the above formula 2. At this time, the spray gun height needs to be increased from h to h1, and the increased height Δh=h1-h;

[0083] If W1<W, then the height of the spray gun needs to be reduced from h to h1, and the height reduction is Δh=h1-h.

[0084] When adjusting the angle of the spray gun 311, if W1>W, the spray gun angle α1 needs to satisfy the above formula 3, and the spray gun angle needs to be increased from α to α1, then Δα=α1-α;

[0085] If W1<W, the spray gun angle is reduced from α to α1, then Δα=α1-α; when Δα>0, the first motor 312 rotates forward; when Δα<0, the first motor 312 rotates reversely.

[0086] According to different adjustment ranges, the angle or height of the spray gun 311 is adjusted preferentially, which can reduce the amount of calculation, make adjustments quickly, and automatically complete the adjustment of the angle or height of the spray gun 311.

[0087] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0088] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A steel structure surface spraying equipment, characterized in that: include: Pretreatment module: pickling and rust removal of steel structures; Flushing module: flushing the surface of the steel structure after pickling; Spraying module: spraying the surface of the steel structure after flushing; Transport module: transport the steel structure to the pretreatment module, the flushing module, and the spraying module in sequence; The spraying module includes: a driving mechanism for driving the steel structure to move toward the lower feed end, and a spraying mechanism for spraying the surface of the steel structure; The spraying mechanism comprises: a spray gun, a bracket for mounting the spray gun, a first motor fixedly mounted on the bracket, and a second motor for driving the spray gun to rise and fall along the bracket; The spraying angle of the spray gun is adjusted by the first motor, or the height of the spray gun is adjusted by the second motor; The spraying mechanism further includes: a controller, the controller being electrically connected to the first motor and the second motor respectively; The controller adjusts the spraying angle or height of the spray gun based on the model of the steel structure, as follows: Preset steel structure models in the database; The controller extracts the model of the steel structure to be sprayed, and extracts the preset spraying height and preset spraying angle corresponding to the model from the database; The controller extracts the real-time height and real-time angle of the spray gun; The controller adjusts the real-time spraying height to the preset spraying height, or adjusts the real-time angle to the preset spraying angle based on the model of the steel structure; The spray gun is provided with a pressure sensor for detecting the pressure of the spray gun and a flow sensor for detecting the flow rate in the spray gun; the pressure sensor and the flow sensor are electrically connected to the controller respectively; The controller extracts the pressure value measured by the pressure sensor and the flow rate measured by the flow sensor respectively; The controller determines the blockage coefficient of the spray gun by using a pressure-flow relationship method, and fine-tunes the height or angle of the spray gun based on the blockage coefficient; Assume that the vertical height of the spray gun is h, the distance between the spray gun and the steel structure is L, the spray gun angle is α, the blockage coefficient of the spray gun is k, and the radius of the spray range is r, then L=r / tan(α / 2); Extract the model of the steel structure to be sprayed, and adjust the spraying according to the model, assuming that the width of the steel structure to be sprayed is W; When adjusting the height of the spray gun according to the width W of the steel structure, in order to cover the width of the steel structure, it is necessary to meet According to the above formula, we can get ; When adjusting the angle of the spray gun according to the width W of the steel structure, in order to cover the width of the steel structure, it is necessary to meet .

2. A steel structure surface spraying equipment as claimed in claim 1, characterized in that: The spraying mechanism further includes: a first conveyor belt, and a second conveyor belt cooperating with the first conveyor belt to transport the steel structure; a third conveyor belt disposed on a material discharge side of the first conveyor belt, and a fourth conveyor belt disposed on a material discharge side of the second conveyor belt; The conveying directions of the first conveyor belt, the second conveyor belt and the third conveyor belt are the same; the conveying speed of the third conveyor belt is greater than that of the fourth conveyor belt, and the conveying directions are opposite.

3. A steel structure surface spraying equipment as claimed in claim 1, characterized in that: The pretreatment module includes: a pickling tank and a heating tank; The pickling tank contains a pickling solution, wherein the pickling solution is mixed with sand and gravel; A filter screen is provided in the pickling tank; A liquid outlet is provided below the filter screen, and the liquid outlet is connected to the heating pool; A centrifugal pump is installed on the top of the heating pool, and the liquid outlet end of the centrifugal pump is connected to a swinging piece and a stirring component for stirring the pickling liquid and gravel.

4. A steel structure surface spraying equipment as claimed in claim 3, characterized in that: The swinging member comprises: a sliding shell, a rotating blade rotatably mounted on the sliding shell, a cam coaxially connected to the rotating blade, a movable rod hinged to the cam, and a liquid outlet pipe connected to the other end of the movable rod; the liquid outlet pipe is slidably connected to the sliding shell.

5. A steel structure surface spraying equipment as claimed in claim 4, characterized in that: The stirring assembly includes: a cleaning member connected to the liquid outlet pipe, a fan blade that drives the cleaning member to rotate, a support seat slidably connected to the bottom of the cleaning member, a spring fixedly installed between the cleaning member and the support seat, and the support seat is slidably installed at the bottom of the pickling tank through the filter.

6. A steel structure surface spraying equipment as claimed in claim 5, characterized in that: The cleaning member comprises: a circular brush, a mounting shell rotatably connected to the circular brush coaxially, and a fan blade rotatably mounted inside the mounting shell and coaxially connected to the circular brush.

7. A steel structure surface spraying equipment as claimed in claim 3, characterized in that: The conveying module includes: a beam arranged above the pickling tank, a lifting trolley installed on the beam, a drum rotatably installed on the lifting trolley, a third motor driving the drum to rotate, a steel wire rope wound on the drum, and a hook connected to the movable end of the steel wire rope.

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