Steel structure surface spraying device

Abstract

The invention discloses a steel structure surface spraying device, belongs to the field of spraying, and aims to solve the problems that the difficulty and the complexity of operation are increased and the working efficiency is reduced as the spraying effect is ensured as far as possible by an operator through experience and continuous adjustment because adjustment cannot be carried out according to surface fluctuation. Comprising a storage barrel, a hose communicated with the output end of the storage barrel and a spray head communicated with the other end of the hose, a reciprocating mechanism is arranged on the outer side of the storage barrel, and a limiting mechanism is arranged on the outer side of the spray head. Compared with the prior art, the distance between the spray head and the surface of the steel structure can be automatically adjusted according to changes of the surface of the steel structure, and therefore the purpose of saving manpower is achieved.

Description

Technical Field

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

[0002] The main function of the steel structure surface spraying device is to form a uniform and firm paint protective layer on the surface of the steel structure to improve the anti-corrosion, anti-rust and aesthetic properties of the steel structure.

[0003] The patent with announcement number CN218796781U discloses a spraying device for steel structure processing, which belongs to the technical field of steel structure spraying equipment, including a workbench and a material box fixedly installed on the lower surface of the workbench, a spraying pump is arranged on one side of the material box, the feed port of the spraying pump is connected with a feed pipe and the other end of the feed pipe is connected with the material box, the discharge port of the spraying pump is connected with two spraying hoses, and two mounting plates are fixedly installed on the upper surface of the workbench. The surface of the steel structure is not completely flat, and there are often convex and concave parts. When there are convexities on the surface of the steel structure, the spray head can The nozzle may be too close to the raised part, resulting in uneven spray thickness and even sagging, affecting the spray quality. At the same time, too close a distance may also lead to paint waste and increase production costs. When encountering a recessed part, the nozzle distance may be too far, resulting in the paint unable to fully cover the recessed area, resulting in poor spraying effect and affecting the anti-corrosion and anti-rust properties of the steel structure. In addition, since it cannot be adjusted according to the surface undulations, operators often need to rely on experience and continuous adjustments to ensure the spraying effect as much as possible, which not only increases the difficulty and complexity of the operation, but also reduces work efficiency.

[0004] To solve the above problems, a steel structure surface spraying device is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a steel structure surface spraying device, which solves the problem that it cannot be adjusted according to the surface undulations. Operators often need to rely on experience and continuous adjustments to ensure the spraying effect as much as possible, which not only increases the difficulty and complexity of the operation, but also reduces work efficiency.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a steel structure surface spraying device, comprising a material storage barrel, a hose connected to the output end of the material storage barrel, and a nozzle connected to the other end of the hose, a reciprocating mechanism is arranged on the outside of the material storage barrel, and a limiting mechanism is arranged on the outside of the nozzle; The limiting mechanism includes a pushing component and an elastic component, and the elastic component is arranged on the outside of the pushing component; The reciprocating mechanism includes a first support plate fixedly connected to the bottom of the storage barrel, a second support plate is arranged on both sides of one direction of the first support plate, a cylinder is fixedly connected to the outer side of the second support plate, an output end of the cylinder is fixedly connected to the gas rod, a first hole is arranged inside the second support plate, a first connecting plate is arranged on the inner side of the first hole, the first connecting plate is connected to the gas rod and the second support plate in a fixed connection manner, a motor is fixedly connected to one side of the other direction of the first support plate, a rotating shaft is fixedly connected to the output end of the motor, a first gear is fixedly connected to the other end of the rotating shaft, an annular gear belt is meshedly connected to the outer side of the first gear, a sliding plate is arranged on the outer side of the annular gear belt, a first slide groove is arranged on the inner side of the sliding plate, a slider is arranged on the inner side of the first slide groove, and the slider is connected to the annular gear belt in a fixed connection manner.

[0007] Preferably, the sliding plate is connected to the first support plate in a transverse sliding connection, and the central axis of the sliding plate is perpendicular to the central axis of the annular gear belt.

[0008] Preferably, the central axis of the sliding plate coincides with the central axis of the first sliding groove.

[0009] Preferably, a first groove is provided inside the first support plate, and the pushing assembly includes a second connecting plate slidably connected to the inner side of the first groove, a second hole is provided inside the second connecting plate near one end of the motor, a pushing rod is provided on the inner side of the second hole, a second groove is connected below the second hole, a third groove is connected below the second groove, an elastic rubber pad is fixedly connected to the inner side of the third groove, the first limiting plate is fixedly connected to the upper end of the elastic rubber pad, the second limiting plate is fixedly connected to the lower side of the pushing rod, a first rack is fixedly connected to the upper surface of one end of the pushing rod, a second gear is provided on the outer side of the first rack, a second rack slidably connected to the second connecting plate is provided on the outer side of the second gear, and an end of the second rack away from the motor is fixed There are two first push plates fixedly connected, a first guide hole is provided on the inner side of the first push plate, the second connecting plate is connected to the sliding plate in a fixed connection, the second connecting plate is fixedly connected to the third connecting plate on both sides of the end away from the motor, a second guide hole is provided inside the third connecting plate, a first guide rod is provided on the inner side of the first guide hole, the first guide rod and the first push plate are connected in a sliding connection, and the contact part between the first guide rod and the first guide hole is a rectangular parallelepiped, the other end of the first guide rod is nested in the inner side of the second guide hole, a fifth groove is provided on the end of the second connecting plate away from the motor, a fourth connecting plate is provided on the inner side of the fifth groove, the fourth connecting plate is connected to the nozzle in a fixed connection, and the appearance structure of the fourth connecting plate is a rectangular parallelepiped.

[0010] Preferably, the outer side surface of the push rod fits with the inner side surface of the second hole, and the appearance structure of the push rod is a rectangular parallelepiped.

[0011] Preferably, the two side surfaces of the upper end of the first limiting plate are inclined surfaces, and the lower end surface of the first limiting plate is a rectangular parallelepiped, and the distance from the first limiting plate to the two sides of the second groove is consistent with the width of the second limiting plate.

[0012] Preferably, the appearance structure of the first guide hole is linear, and the central axis of the first guide hole is perpendicular to a side surface of the first support plate away from the motor.

[0013] Preferably, the appearance structure of the second guide hole at one end away from the motor is a horizontal straight line, and the appearance structure of the second guide hole at one end close to the motor is an inclined straight line.

[0014] Preferably, the elastic component includes a first connecting rod fixedly connected to the upper end of the first guide rod, a fourth groove is provided inside the first connecting rod, a spring is fixedly connected to the inner side of the fourth groove, a push rod is fixedly connected to the other end of the spring, two limit grooves are provided on the outer side of the nozzle, a limit rod is provided on the inner side of the limit groove, the matching mode of the limit groove and the limit rod is a clearance fit, and the connection mode of the limit rod and the push rod is a fixed connection.

[0015] Preferably, the appearance structure of the push rod at one end away from the motor is conical, and the outer side surface of the push rod at one end close to the motor fits with the inner side surface of the fourth groove.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a steel structure surface spraying device, which is provided with a reciprocating mechanism and a limiting mechanism, so that the reciprocating mechanism drives the limiting mechanism to move when it moves, and can drive the nozzle to move when it moves to the approximate position of the protrusion and the depression. Compared with the prior art, the distance between the nozzle and the surface of the steel structure can be automatically adjusted according to the changes of the surface of the steel structure, thereby achieving the purpose of saving manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the left-side cross-sectional structure of the first support plate of the present invention; Figure 3 It is a schematic diagram of a top view of the structure of a first rack of the present invention; Figure 4 is a schematic diagram of a front cross-sectional structure of a second connecting plate of the present invention; Figure 5 is a schematic cross-sectional structure diagram of a first connecting rod of the present invention; Figure 6 For the present invention Figure 1 Schematic diagram of the structure at A in the middle; Figure 7 For the present invention Figure 2 Schematic diagram of the structure at point B in the middle.

[0018] In the figure: 1, storage barrel; 2, hose; 3, nozzle; 4, reciprocating mechanism; 5, limit mechanism; 51, push assembly; 52, elastic assembly; 401, first support plate; 402, second support plate; 403, cylinder; 404, gas rod; 405, first hole; 406, first connecting plate; 407, motor; 408, rotating shaft; 409, first gear; 410, annular gear belt; 411, sliding plate; 412, first slide groove; 413, slider; 6, first groove; 5101, second connecting plate; 5102, second hole; 5103, push rod; 5104, second groove slot; 5105, the third groove; 5106, the elastic rubber pad; 5107, the first limit plate; 5108, the second limit plate; 5109, the first push plate; 5110, the first guide hole; 5111, the third connecting plate; 5112, the second guide hole; 5113, the first guide rod; 5114, the fifth groove; 5115, the fourth connecting plate; 5116, the first rack; 5117, the second gear; 5118, the second rack; 5201, the first connecting rod; 5202, the fourth groove; 5203, the spring; 5204, the push rod; 5205, the limit slot; 5206, the limit rod. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 7 The present invention provides a technical solution: a steel structure surface spraying device, comprising a material storage barrel 1, a hose 2 connected to the output end of the material storage barrel 1, a nozzle 3 connected to the other end of the hose 2, a reciprocating mechanism 4 is arranged on the outside of the material storage barrel 1, and a limiting mechanism 5 is arranged on the outside of the nozzle 3; The limiting mechanism 5 includes a pushing component 51 and an elastic component 52, and the elastic component 52 is arranged on the outside of the pushing component 51; The reciprocating mechanism 4 includes a first support plate 401 fixedly connected to the bottom of the storage barrel 1, second support plates 402 are arranged on both sides of one direction of the first support plate 401, a cylinder 403 is fixedly connected to the outer side of the second support plate 402, and a gas rod 404 is fixedly connected to the output end of the cylinder 403, a first hole 405 is arranged inside the second support plate 402, a first connecting plate 406 is arranged on the inner side of the first hole 405, and the first connecting plate 406 is connected to the gas rod 404 and the second support plate 402 in a fixed manner, and a motor 407 is fixedly connected to one side of the first support plate 401 in the other direction, and a rotating shaft 408 is fixedly connected to the output end of the motor 407, and the other end of the rotating shaft 408 is fixedly connected to the first gear 409. The outer side of the gear 409 is meshedly connected with an annular gear belt 410, and a sliding plate 411 is arranged on the outer side of the annular gear belt 410. The sliding plate 411 is connected to the first support plate 401 in a transverse sliding connection, and the central axis of the sliding plate 411 is perpendicular to the central axis of the annular gear belt 410, so that the sliding plate 411 can slide laterally on the surface of the first support plate 401, and a first slide groove 412 is arranged on the inner side of the sliding plate 411, and a slider 413 is arranged on the inner side of the first slide groove 412. The slider 413 is connected to the annular gear belt 410 in a fixed connection, and the central axis of the sliding plate 411 coincides with the central axis of the first slide groove 412, so that the slider 413 can slide vertically up and down on the inner side of the first slide groove 412.

[0021] The first support plate 401 is provided with a first groove 6 inside, and the pushing component 51 includes a second connecting plate 5101 slidably connected to the inside of the first groove 6, and the second connecting plate 5101 is provided with a second hole 5102 inside the end close to the motor 407, and a pushing rod 5103 is provided inside the second hole 5102, and the outer side surface of the pushing rod 5103 is in contact with the inner side surface of the second hole 5102, and the appearance structure of the pushing rod 5103 is a rectangular parallelepiped, and no shaking or rotation occurs when the pushing rod 5103 moves inside. The second hole 5102 is connected to the second groove 5104 below, and the second groove 5104 is connected to the third groove 5105 below, and the inner side of the third groove 5105 is fixedly connected to an elastic rubber pad 5 106, the upper end of the elastic rubber pad 5106 is fixedly connected with a first limit plate 5107, the lower part of the push rod 5103 is fixedly connected with a second limit plate 5108, the upper surface of one end of the push rod 5103 is fixedly connected with a first rack 5116, the outer side of the first rack 5116 is provided with a second gear 5117, the outer side of the second gear 5117 is provided with a second rack 5118 slidably connected to the second connecting plate 5101, the end of the second rack 5118 away from the motor 407 is fixedly connected with two first push plates 5109, the inner side of the first push plate 5109 is provided with a first guide hole 5110, the second connecting plate 5101 is connected to the sliding plate 411 in a fixed manner, and the second connecting plate 5101 is far away from the motor 407. A third connecting plate 5111 is fixedly connected to both sides of one end away from the motor 407, a second guide hole 5112 is arranged inside the third connecting plate 5111, a first guide rod 5113 is arranged on the inner side of the first guide hole 5110, the first guide rod 5113 is connected to the first push plate 5109 in a sliding connection, and the contact part between the first guide rod 5113 and the first guide hole 5110 is a rectangular parallelepiped, the other end of the first guide rod 5113 is nested in the inner side of the second guide hole 5112, a fifth groove 5114 is arranged on the end of the second connecting plate 5101 away from the motor 407, a fourth connecting plate 5115 is arranged on the inner side of the fifth groove 5114, the fourth connecting plate 5115 is connected to the nozzle 3 in a fixed connection, and the fourth connecting The appearance structure of plate 5115 is a rectangular parallelepiped, the two side surfaces of the upper end of the first limiting plate 5107 are inclined surfaces, and the lower end surface of the first limiting plate 5107 is a rectangular parallelepiped, and the spacing from the first limiting plate 5107 to the two sides of the second groove 5104 is consistent with the width of the second limiting plate 5108, so that the second limiting plate 5108 can move downward along the upper end bevel of the first limiting plate 5107, the appearance structure of the first guide hole 5110 is a straight line, and the central axis of the first guide hole 5110 is perpendicular to the side of the first support plate 401 away from the motor 407, the appearance structure of the second guide hole 5112 away from the motor 407 is a horizontal straight line, and the appearance structure of the second guide hole 5112 close to the motor 407 is an inclined straight line.When the first guide hole 5110 moves laterally, it will first push the first guide rod 5113 outward, and then drive the first guide rod 5113 to tilt.

[0022] The elastic component 52 includes a first connecting rod 5201 fixedly connected to the upper end of the first guide rod 5113, a fourth groove 5202 is arranged inside the first connecting rod 5201, a spring 5203 is fixedly connected to the inner side of the fourth groove 5202, and a push rod 5204 is fixedly connected to the other end of the spring 5203. Two limiting grooves 5205 are provided on the outer side of the nozzle 3, and a limiting rod 5206 is arranged on the inner side of the limiting groove 5205. The matching mode of the limiting groove 5205 and the limiting rod 5206 is clearance matching, and the connection mode of the limiting rod 5206 and the push rod 5204 is fixed connection. The appearance structure of one end of the push rod 5204 away from the motor 407 is conical, and the outer side surface of the end of the push rod 5204 close to the motor 407 is in contact with the inner side surface of the fourth groove 5202, so that the push rod 5204 moves on the inner side of the fourth groove 5202.

[0023] When spraying paint, the nozzle 3 is turned on to spray paint, the motor 407 is started to drive the rotating shaft 408, the annular gear belt 410 is driven to rotate, and the slider 413 is driven to move. Since the connection mode between the sliding plate 411 and the first support plate 401 is a horizontal sliding connection, and the central axis of the sliding plate 411 is perpendicular to the central axis of the annular gear belt 410, the central axis of the sliding plate 411 coincides with the central axis of the first slide groove 412, so that the slider 413 drives the sliding plate 411 to slide. When the slider 413 moves to the first gear 409 to turn, the slider 413 slides downward and moves to the annular gear Below the wheel belt 410, the reciprocating motion drives the sliding plate 411 to move back and forth. Since the second connecting plate 5101 and the sliding plate 411 are connected in a fixed manner, the second connecting plate 5101 moves back and forth, and the fourth connecting plate 5115 arranged on the inner side of the second connecting plate 5101 moves back and forth. Since the fourth connecting plate 5115 and the nozzle 3 are connected in a fixed manner, the nozzle 3 moves back and forth to spray paint. The cylinder 403 is started to drive the gas rod 404 to move up and down, and drive the first connecting plate 406 and the second support plate 402 to move up and down, so as to realize the painting of the entire steel structure.

[0024] When the second connecting plate 5101 reciprocates, it drives the third connecting plate 5111 and the second guide hole 5112 to reciprocate, so that the first guide rod 5113 reciprocates, and the first connecting rod 5201, the spring 5203 and the push rod 5204 reciprocate. Because there are two first guide rods 5113, there are two corresponding first connecting rods 5201. At this time, the corresponding push rod 5204 is arranged on the side of the direction in which the nozzle 3 is about to move. Because the appearance structure of the end of the push rod 5204 away from the motor 407 is conical, and the outer side surface of the end of the push rod 5204 close to the motor 407 is in contact with the inner side surface of the fourth groove 5202, after the push rod 5204 contacts the surface of the steel structure, the protrusions and depressions on the surface of the steel structure can push the push rod 5204 to reciprocate, drive the limit rod 5206 to reciprocate, drive the nozzle 3 to reciprocate, and keep a suitable distance between the nozzle 3 and the surface of the steel structure.

[0025] When the second connecting plate 5101 moves to the inner side wall of one end of the first groove 6, the two first connecting rods 5201 have moved out of the steel structure surface, so that the spring 5203 drives the push rod 5204 and the limit rod 5206 to reset, so that the nozzle 3 is reset. At this time, when the push rod 5103 collides with the inner side wall of one end of the first groove 6, the push rod 5103 moves in the direction that the second connecting plate 5101 is about to move, driving the first rack 5116 to move in the direction that the second connecting plate 5101 is about to move, so that the second gear 5117 rotates, driving the second rack 5118 to move in the opposite direction of the direction that the second connecting plate 5101 is about to move, and driving the two first guide holes 5110 to move in the opposite direction of the direction that the second connecting plate 5101 is about to move. Because the appearance structure of the first guide hole 5110 is linear, the second guide hole 5110 is linear. The appearance structure of the end of the guide hole 5112 away from the motor 407 is a horizontal straight line, and the appearance structure of the end of the second guide hole 5112 close to the motor 407 is an inclined straight line, so that the push rod 5204 in the direction of the second connecting plate 5101 that is about to move moves toward the inside of the limiting groove 5205 of the nozzle 3, and the corresponding limiting rod 5206 moves toward the inside of the limiting groove 5205 to control the nozzle 3, while the other limiting rod 5206 loses control of the nozzle 3, so that the push rod 5204 and the limiting rod 5206 of the nozzle 3 can be controlled to always remain in the front side of the direction in which the nozzle 3 is about to move, and can contact the surface of the steel structure in advance, so that the nozzle 3 can start to automatically telescope and adjust according to the shape and position of the steel structure before it reaches this position, ensuring that the nozzle 3 can be immediately at a suitable painting distance when it arrives, achieving more precise distance control and saving manpower.

[0026] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel structure surface spraying device, comprising a material storage barrel (1), a hose (2) connected to the output end of the material storage barrel (1), and a spray head (3) connected to the other end of the hose (2), characterized in that: A reciprocating mechanism (4) is disposed on the outer side of the material storage barrel (1), and a limiting mechanism (5) is disposed on the outer side of the nozzle (3); The limiting mechanism (5) comprises a pushing component (51) and an elastic component (52), wherein the elastic component (52) is arranged outside the pushing component (51); The reciprocating mechanism (4) comprises a first support plate (401) fixedly connected below the material storage barrel (1); second support plates (402) are arranged on both sides of one direction of the first support plate (401); a cylinder (403) is fixedly connected to the outer side of the second support plate (402); an output end of the cylinder (403) is fixedly connected to a gas rod (404); a first hole (405) is arranged inside the second support plate (402); a first connecting plate (406) is arranged inside the first hole (405); the first connecting plate (406) is connected to the gas rod (404) and the second support plate (402) in a fixed manner; A motor (407) is fixedly connected to one side of the first support plate (401) in the other direction; an output end of the motor (407) is fixedly connected to a rotating shaft (408); the other end of the rotating shaft (408) is fixedly connected to a first gear (409); an outer side of the first gear (409) is meshingly connected to an annular gear belt (410); a sliding plate (411) is provided on the outer side of the annular gear belt (410); a first sliding groove (412) is provided on the inner side of the sliding plate (411); a sliding block (413) is provided on the inner side of the first sliding groove (412); and the sliding block (413) is connected to the annular gear belt (410) in a fixed manner.

2. A steel structure surface spraying device according to claim 1, characterized in that: The sliding plate (411) is connected to the first support plate (401) in a transverse sliding connection, and the central axis of the sliding plate (411) is perpendicular to the central axis of the annular gear belt (410).

3. A steel structure surface spraying device according to claim 1, characterized in that: The central axis of the sliding plate (411) coincides with the central axis of the first sliding groove (412).

4. A steel structure surface spraying device according to claim 1, characterized in that: The first support plate (401) is provided with a first groove (6) inside, the pushing assembly (51) comprises a second connecting plate (5101) slidably connected to the inside of the first groove (6), a second hole (5102) is provided inside the second connecting plate (5101) at one end close to the motor (407), a pushing rod (5103) is provided inside the second hole (5102), a second groove (5104) is connected below the second hole (5102), a third groove (5105) is connected below the second groove (5104), and the third groove (5105) is connected to the outside of the third groove (5105). An elastic rubber pad (5106) is fixedly connected to the inner side, a first limit plate (5107) is fixedly connected to the upper end of the elastic rubber pad (5106), a second limit plate (5108) is fixedly connected to the lower side of the push rod (5103), a first rack (5116) is fixedly connected to the upper surface of one end of the push rod (5103), a second gear (5117) is arranged on the outer side of the first rack (5116), a second gear (5118) is arranged on the outer side of the second gear (5117) and is slidably connected to the second connecting plate (5101), and the second rack (5118) is far Two first push plates (5109) are fixedly connected to one end away from the motor (407), and a first guide hole (5110) is arranged on the inner side of each of the first push plates (5109). The second connecting plate (5101) is fixedly connected to the sliding plate (411). Third connecting plates (5111) are fixedly connected to both sides of one end of the second connecting plate (5101) away from the motor (407), and a second guide hole (5112) is arranged inside the third connecting plate (5111). A first guide rod (5113) is arranged on the inner side of the first guide hole (5110), and the first guide rod ( The connection between the first guide rod (5113) and the first push plate (5109) is a sliding connection, and the contact portion with the first guide hole (5110) is a rectangular parallelepiped. The other end of the first guide rod (5113) is nested in the inner side of the second guide hole (5112). The second connecting plate (5101) is provided with a fifth groove (5114) at one end away from the motor (407). A fourth connecting plate (5115) is provided on the inner side of the fifth groove (5114). The fourth connecting plate (5115) is connected to the nozzle (3) in a fixed manner. The appearance structure of the fourth connecting plate (5115) is a rectangular parallelepiped.

5. A steel structure surface spraying device according to claim 4, characterized in that: The outer side surface of the push rod (5103) fits with the inner side surface of the second hole (5102), and the appearance structure of the push rod (5103) is a rectangular parallelepiped.

6. A steel structure surface spraying device according to claim 4, characterized in that: The two side surfaces of the upper end of the first limiting plate (5107) are inclined surfaces, and the lower end surface of the first limiting plate (5107) is a rectangular parallelepiped, and the spacing from the first limiting plate (5107) to the two sides of the second groove (5104) is consistent with the width of the second limiting plate (5108).

7. A steel structure surface spraying device according to claim 4, characterized in that: The appearance structure of the first guide hole (5110) is linear, and the central axis of the first guide hole (5110) is perpendicular to a side of the first support plate (401) away from the motor (407).

8. A steel structure surface spraying device according to claim 4, characterized in that: The appearance structure of the end of the second guide hole (5112) away from the motor (407) is a horizontal straight line, and the appearance structure of the end of the second guide hole (5112) close to the motor (407) is an inclined straight line.

9. A steel structure surface spraying device according to claim 1, characterized in that: The elastic component (52) comprises a first connecting rod (5201) fixedly connected to the upper end of the first guide rod (5113); a fourth groove (5202) is arranged inside the first connecting rod (5201); a spring (5203) is fixedly connected to the inner side of the fourth groove (5202); the other end of the spring (5203) is fixedly connected to a push rod (5204); two limiting grooves (5205) are arranged on the outer side of the nozzle (3); a limiting rod (5206) is arranged inside the limiting groove (5205); the matching mode of the limiting groove (5205) and the limiting rod (5206) is clearance matching; the connection mode of the limiting rod (5206) and the push rod (5204) is fixed connection.

10. A steel structure surface spraying device according to claim 9, characterized in that: The appearance structure of the end of the push rod (5204) away from the motor (407) is conical, and the outer side surface of the end of the push rod (5204) close to the motor (407) fits with the inner side surface of the fourth groove (5202).

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