Anti-corrosion spraying device for bridge column steel structure connecting component

Abstract

The invention relates to the technical field of bridge construction, in particular to an anti-corrosion spraying device for a bridge column steel structure connecting component. Comprising a handle, a spraying pipe is arranged on the upper side of the handle, a throttling mechanism is further included, the throttling mechanism is arranged in the spraying pipe, and a steering mechanism is arranged on the lower side of the spraying pipe. Through the design of the positioning mechanism, the spraying direction of the spraying pipe can be perpendicular to the steel structure, the sagging phenomenon generated when anticorrosive paint is sprayed on the steel structure is prevented, through the design of the throttling mechanism, when the spraying pipe sprays the corner of the steel structure, the spraying amount of the spraying pipe can be reduced, and the spraying efficiency is improved. And through the design of a friction wheel A and a friction wheel B, the spraying pipe can be limited in the moving process of the electric sliding block, the spraying pipe is prevented from rotating at will, a wedge-shaped strip A extrudes a frustum, a gap can be generated between the friction wheel A and the friction wheel B, and therefore the spraying pipe can move.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge construction, and in particular to an anti-corrosion spraying device for a connecting member of a bridge column steel structure. Background Art

[0002] Steel structure is one of the most widely used materials in various large-scale engineering projects. The fields of bridges, buildings, and transportation infrastructure all rely on the support of steel structures. Coating the surface of the steel structure with an anti-corrosion coating can prevent corrosive media and moisture from coming into contact with the surface of the steel structure, improve the anti-corrosion ability of the steel structure, delay the occurrence of corrosion situations such as passivation, and even achieve the effect of no corrosion.

[0003] After the steel structure is processed in the factory, pre-coating of some anti-corrosion coatings will be carried out first to prevent large-area corrosion of the steel structure before installation, and areas that are not to be sprayed need to be reserved to prevent the pre-applied anti-corrosion coating near the splicing seam from being burned by the high temperature generated during welding of the steel structure, resulting in coating failure. After the installation of the steel structure is completed, anti-corrosion coating spraying needs to be carried out at the welding joints and near the bolt fastening areas of the steel structure at the work site. In the prior art, the anti-corrosion spraying work is usually carried out by workers holding spraying equipment or through large spraying equipment. Due to the installation angle and height of the steel structure, it is difficult for the above two methods to make the spraying direction of the anti-corrosion coating perpendicular to the surface of the steel structure, resulting in a sagging phenomenon of the anti-corrosion coating sprayed on the steel structure, forming an uneven anti-corrosion coating. The thickness of the anti-corrosion coating near the sagging area is uneven, which will cause the solvent volatilization of the anti-corrosion coating to be blocked, the interior of the coating to be loose, and the adhesion to be significantly reduced. In severe cases, the entire anti-corrosion coating will fail. Moreover, when spraying at the corners of the steel structure, it is impossible to adjust the spraying amount of the anti-corrosion coating in time, resulting in a more serious sagging phenomenon at the corners of the steel structure. Summary of the Invention

[0004] In order to overcome the shortcomings in the prior art, the present invention provides an anti-corrosion spraying device for a connecting member of a bridge column steel structure.

[0005] Technical solution: An anti-corrosion spraying device for a steel structure connecting member of a bridge column, including a handle, a spraying pipe is arranged on the upper side of the handle, and a throttling mechanism is further included. The throttling mechanism is arranged inside the spraying pipe. A steering mechanism is arranged on the lower side of the spraying pipe. The steering mechanism includes a guide rail. The guide rails are symmetrically arranged on the upper side of the handle. A positioning mechanism is arranged on the guide rail. An electric slider is slidably connected inside the guide rail. A guide post is fixedly connected to the electric slider. A frustum and a friction wheel A are slidably sleeved on the guide post. A compression spring A is arranged between the frustum and the electric slider. The frustum is fixedly connected to the friction wheel A. One end of the guide post is rotatably connected to a vertical shaft. The spraying pipe is fixedly connected to the vertical shaft. A friction wheel B that cooperates with the friction wheel A is fixedly sleeved on the vertical shaft. Brackets A are symmetrically and fixedly connected to the guide rail. A wedge-shaped strip A that cooperates with the frustum is fixedly connected to one side of the bracket A.

[0006] In addition, particularly preferably, the steering mechanism further includes a friction strip A. The friction strip A is fixedly connected to the bracket A. A guide wheel that cooperates with the friction strip A is fixedly sleeved on the outer wall of the vertical shaft.

[0007] In addition, particularly preferably, the steering mechanism further includes a bracket C. The bracket C is fixedly connected to the guide rail. A wedge-shaped strip B that cooperates with the frustum is fixedly connected to one side of the bracket C.

[0008] In addition, particularly preferably, the steering mechanism further includes a friction strip B. The friction strip B that cooperates with the guide wheel is fixedly connected to one side of the bracket C.

[0009] In addition, particularly preferably, the steering mechanism further includes a socket. The socket is fixedly connected to one side of the guide rail. A plug rod is inserted into the socket. One end of the plug rod is fixedly connected to a wedge-shaped strip C that cooperates with the frustum, and is fixedly connected to a friction strip C that cooperates with the guide wheel.

[0010] In addition, particularly preferably, the throttling mechanism includes a wedge-shaped block. The wedge-shaped blocks are symmetrically and fixedly connected to the bracket C. A disc that cooperates with the wedge-shaped block is slidably sleeved on the outer wall of the vertical shaft. A tension spring is arranged between the disc and the spraying pipe. A sliding frame is fixedly connected to the top of the disc. The sliding frame is slidably connected to the spraying pipe in a penetrating manner. A plurality of throttling blocks evenly distributed are fixedly connected to the sliding frame.

[0011] In addition, particularly preferably, the throttling mechanism further includes a throttling strip. A groove is formed on one side of the wedge-shaped block. The throttling strip is inserted into the groove of the wedge-shaped block. A friction strip D that cooperates with the guide wheel is fixedly connected to the bottom of the throttling strip through a mounting plate. A wedge-shaped strip D that cooperates with the frustum is fixedly connected to the bottom of the friction strip D through a vertical plate.

[0012] In addition, it is particularly preferred that the positioning mechanism includes a universal shaft, the top end of the handle is hinged to the universal shaft, one end of the universal shaft is fixedly connected to a vertical rod, a return spring is arranged between the vertical rod and the handle, one end of the vertical rod is fixedly connected to the mounting seat, both of the guide rails are hinged to the mounting seat, an electric push rod is installed on the mounting seat, the telescopic end of the electric push rod is symmetrically hinged to a connecting rod, and the connecting rod is hinged to the guide rail.

[0013] In addition, it is particularly preferred that the positioning mechanism further includes the support plate, the other side of the guide rail is fixedly connected to the support plate, a positioning rod is arranged on one side of the support plate, and an elastic telescopic rod A is arranged between the positioning rod and the support plate.

[0014] In addition, it is particularly preferred that the positioning mechanism further includes a positioning plate, the positioning plate is arranged on the lower side of the mounting seat, and an elastic telescopic rod B is arranged between the positioning plate and the mounting seat.

[0015] Compared with the prior art, the present invention has the following advantages: 1. Through the design of the positioning mechanism of the present invention, the spraying direction of the spraying pipe can be perpendicular to the steel structure, preventing the anti-corrosion coating from sagging when sprayed on the steel structure. Through the design of the throttling mechanism, when the spraying pipe sprays at the corner of the steel structure, the spraying amount of the spraying pipe can be reduced, further preventing the anti-corrosion coating from sagging. Through the design of the friction wheel A and the friction wheel B, during the movement of the electric slider, the spraying pipe can be limited to prevent the spraying pipe from rotating arbitrarily. By the wedge-shaped strip A squeezing the frustum, a gap can be generated between the friction wheel A and the friction wheel B, so that the spraying pipe can move.

[0016] 2. Through the design of the throttling strip of the present invention, the rotation angle of the spraying pipe can be controlled according to whether the steel structure is equipped with rib plates. Through the design of the friction strip C and the friction strip D, when the steel structure is equipped with rib plates, the spraying pipe can rotate reciprocally, so as to spray the anti-corrosion coating on the rib plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the whole of the present invention; Figure 2 is an installation schematic diagram at the guide rail of the present invention; Figure 3 is a schematic structural diagram of the steering mechanism of the present invention; Figure 4 is an installation schematic diagram at the guide wheel of the present invention; Figure 5 is an installation schematic diagram at the wedge-shaped strip A of the present invention; Figure 6Installation schematic diagram of the wedge strip B of the present invention; Figure 7 Installation schematic diagram of the socket of the present invention; Figure 8 Installation schematic diagram of the wedge strip D of the present invention; Figure 9 Structural schematic diagram of the throttling mechanism of the present invention; Figure 10 Structural schematic diagram of the positioning mechanism of the present invention; Figure 11 Installation schematic diagram of the positioning rod of the present invention.

[0018] In the figure: 1. Handle, 101. Spraying pipe, 201. Guide rail, 202. Electric slider, 203. Guide post, 204. Frustum, 205. Friction wheel A, 206. Vertical shaft, 207. Friction wheel B, 208. Bracket A, 209. Wedge strip A, 301. Friction strip A, 302. Guide wheel, 401. Bracket C, 402. Wedge strip B, 501. Friction strip B, 601. Socket, 602. Plug rod, 603. Wedge strip C, 604. Friction strip C, 701. Wedge block, 702. Sliding frame, 703. Throttle block, 704. Throttle strip, 801. Friction strip D, 802. Wedge strip D, 901. Universal shaft, 902. Vertical rod, 1001. Mounting seat, 1002. Electric push rod, 1003. Link, 1101. Support plate, 1102. Positioning rod, 1103. Positioning plate. Detailed implementation manners

[0019] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with the specific implementation manners and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present invention.

[0020] Embodiment 1 An anti-corrosion spraying device for a steel structure connecting member of a bridge column, as Figures 1 - 4As shown, it includes a handle 1, a spray tube 101 is arranged on the upper side of the handle 1, and also includes a throttling mechanism. The throttling mechanism is arranged inside the spray tube 101, and the throttling mechanism is used to control the spraying amount of the spray tube 101. The lower side of the spray tube 101 is provided with a steering mechanism, and the steering mechanism includes a guide rail 201. The guide rail 201 is symmetrically arranged on the upper side of the handle 1, and a positioning mechanism is arranged on the guide rail 201. The positioning mechanism is used to make the spraying direction of the spray tube 101 perpendicular to the steel structure. An electric slider 202 is slidably connected in the guide rail 201, and a guide column 203 is fixedly connected to the electric slider 202. A cone 204 and a friction wheel A205 are vertically slidably sleeved on the guide column 203. A compression spring A is arranged between the cone 204 and the electric slider 202, and the compression spring A is sleeved on the outer wall of the guide column 203. The cone 204 is fixedly connected to the friction wheel A205. The top end of the guide column 203 is rotatably connected to the vertical shaft 206. The bottom end of the spray tube 101 is fixedly connected to the top end of the vertical shaft 206. The outer wall of the vertical shaft 206 is fixedly sleeved with a friction wheel B207 used in conjunction with the friction wheel A205. When the friction wheel A205 and the friction wheel B207 are fitted together, the spray tube 101 cannot rotate. The two guide rails 201 are symmetrically fixedly connected to the sides close to each other with brackets A208, and one side of the bracket A208 is fixedly connected to a wedge bar A209 used in conjunction with the cone 204.

[0021] like Figures 3 - 5 As shown, the steering mechanism also includes a friction strip A301, which is fixedly connected to the bracket A208, and a guide wheel 302 used in conjunction with the friction strip A301 is fixedly sleeved on the outer wall of the vertical shaft 206. When the guide wheel 302 contacts the friction strip A301, the spray tube 101 can be rotated.

[0022] like Figures 6 - 8 As shown, the steering mechanism further includes a bracket C401, and the two guide rails 201 are fixedly connected to the sides away from each other with the bracket C401, and the two brackets C401 are fixedly connected to the sides close to each other with a wedge bar B402 used in conjunction with the frustum 204.

[0023] like Figures 6 - 8 As shown, the steering mechanism also includes a friction strip B501. The friction strip B501 used in conjunction with the guide wheel 302 is fixedly connected to the sides of the two brackets C401 that are close to each other. The friction strip B501 is located on the upper side of the wedge strip B402.

[0024] like Figure 7 and Figure 8 As shown, the steering mechanism also includes a socket 601, and the socket 601 is fixedly connected to the side where the two guide rails 201 are close to each other. An insertion rod 602 is inserted in the socket 601, and the ends of the two insertion rods 602 that are away from each other are fixedly connected to a wedge strip C603 used in conjunction with the cone 204, and are fixedly connected to a friction strip C604 used in conjunction with the guide wheel 302.

[0025] As shown in Figures 6 - 9 Figure [not provided], the throttling mechanism includes a wedge block 701. Wedge blocks 701 are symmetrically and fixedly connected to the support C401. A disc that cooperates with the wedge block 701 is vertically and slidably sleeved on the outer wall of the vertical shaft 206. A tension spring is provided between the disc and the spraying pipe 101. A sliding frame 702 is fixedly connected to the top of the disc. When the disc contacts the wedge block 701, the sliding frame 702 can be lowered. The sliding frame 702 is slidably connected to the spraying pipe 101 in a penetrating manner. Three evenly distributed throttling blocks 703 are fixedly connected to the sliding frame 702. When the throttling blocks 703 move, the spraying amount of the spraying pipe 101 can be reduced.

[0026] As shown in Figures 6 - 8 Figure [not provided], the throttling mechanism further includes a throttling strip 704. Grooves are formed at the tops of the adjacent sides of the adjacent two wedge blocks 701 that are close to each other. The throttling strip 704 is commonly inserted into the grooves of the adjacent two wedge blocks 701. A friction strip D801 that cooperates with the guide wheel 302 is fixedly connected to the bottom of the throttling strip 704 through a mounting plate. The mounting plate is L-shaped. A wedge strip D802 that cooperates with the frustum 204 is fixedly connected to the bottom of the friction strip D801 through a vertical plate.

[0027] As shown in Figure 10 As shown in Figure 11 Figure [not provided], the positioning mechanism includes a universal shaft 901. The top end of the handle 1 is hinged with the universal shaft 901. One end of the universal shaft 901 is fixedly connected with a vertical rod 902. A return spring is provided between the vertical rod 902 and the handle 1. The return spring is sleeved on the outer wall of the universal shaft 901. The top end of the vertical rod 902 is fixedly connected with a mounting seat 1001. Both guide rails 201 are hinged with the mounting seat 1001. An electric push rod 1002 is installed on the mounting seat 1001. The telescopic ends of the electric push rod 1002 are symmetrically hinged with connecting rods 1003. The connecting rods 1003 are hinged with the guide rails 201. When the telescopic end of the electric push rod 1002 extends, the two guide rails 201 can be combined.

[0028] As shown in Figure 10 As shown in Figure 11 Figure [not provided], the positioning mechanism further includes a support plate 1101. Support plates 1101 are fixedly connected to the mutually remote sides of the two guide rails 201. Positioning rods 1102 are provided on the mutually close sides of the two support plates 1101. An elastic telescopic rod A is provided between the positioning rod 1102 and the support plate 1101.

[0029] As shown in Figure 10 As shown in Figure 11 Figure [not provided], the positioning mechanism further includes a positioning plate 1103. The positioning plate 1103 is arranged on the lower side of the mounting seat 1001 and is used to contact the steel structure. An elastic telescopic rod B is provided between the front side of the positioning plate 1103 and the mounting seat 1001.

[0030] Initially, the telescopic end of the electric push rod 1002 is in a retracted state. The friction wheel A 205 is in contact with the friction wheel B 207, and the spraying pipe 101 cannot rotate. There is a gap between the two guide rails 201. Both the handle 1 and the vertical rod 902 are in a vertical state. The spraying angle of the spraying pipe 101 has two states according to the shape of the steel structure. For example, Figure 1 as shown, the first state is that the web of the steel structure is in a smooth state. At this time, the staff first lifts the handle 1. The handle 1 drives the mounting seat 1001 to move through the universal joint 901 and the return spring. The mounting seat 1001 drives the two guide rails 201 to move, and drives the positioning plate 1103 to move through the elastic telescopic rod B, so that the positioning plate 1103 contacts the outer wall of the steel structure. Since the connection of the bridge column steel structure is relatively high, just lifting the handle 1 by the staff cannot ensure that the positioning plate 1103 is completely attached to the steel structure, and there will be a gap between the positioning plate 1103 and the steel structure. At this time, start the electric push rod 1002. The telescopic end of the electric push rod 1002 applies a thrust to the two guide rails 201 through the two connecting rods 1003. The two guide rails 201 are forced to rotate towards each other with the connection of the mounting seat 1001 as the center, and drive the positioning rods 1102 to move through the support plates 1101 and the elastic telescopic rods A respectively. Subsequently, the two positioning rods 1102 respectively contact the outer wall of the steel structure. At this time, there is still a gap between the positioning rods 1102, and they are inclined relative to the steel structure. The two guide rails 201 continue to rotate, so that the outer walls of the two positioning rods 1102 squeeze the outer wall of the steel structure. The steel structure exerts a reaction force on the two positioning rods 1102. The positioning rods 1102 are forced to apply a pulling force to the mounting seat 1001 through the elastic telescopic rods A, the support plates 1101 and the guide rails 201, so that the mounting seat 1001 moves towards the side close to the steel structure. At this time, the steel structure exerts a squeezing force on the positioning plate 1103. The positioning plate 1103 is forced to move towards the side close to the mounting seat 1001. The telescopic end of the elastic telescopic rod B is forced to contract. The positioning plate 1103 rotates relative to the steel structure under the action of the squeezing force of the steel structure, and the positioning plate 1103 applies a force to the vertical rod 902 through the elastic telescopic rod B and the mounting seat 1001. The vertical rod 902 is forced to drive the universal joint 901 to rotate with the connection of the handle 1 as the center, and the return spring is deformed by the force until the two guide rails 201 are combined. Then control the telescopic end of the electric push rod 1002 not to extend anymore. At this time, the positioning plate 1103 is completely attached to the outer wall of the steel structure, so that the spraying pipe 101 is perpendicular to the steel structure, thereby completing the positioning of the spraying pipe 101. Through the above steps, the spraying direction of the spraying pipe 101 can be perpendicular to the steel structure, preventing the anti-corrosion paint from flowing down.

[0031] Then, control the electric slider 202 to slide backward along the left guide rail 201. The electric slider 202 drives the frustum 204, friction wheel A 205 and vertical shaft 206 to move through the guide post 203. The vertical shaft 206 drives the spraying pipe 101, friction wheel B 207 and guide wheel 302 to move. At the same time, turn on the spraying pipe 101 to make the spraying pipe 101 spray the anti-corrosion coating on the steel structure. Subsequently, the frustum 204 contacts the wedge-shaped strip A 209 at the rear side of the left front bracket A 208. The wedge-shaped strip A 209 squeezes the frustum 204. The frustum 204 drives the friction wheel A 205 to slide downward along the outer wall of the guide post 203 under the force. The compression spring A contracts under the force. After the friction wheel A 205 slides, it no longer contacts the friction wheel B 207. The friction wheel B 207 is released from the restriction, enabling the vertical shaft 206 to move. At the same time, the guide wheel 302 contacts the friction strip A 301 on the left front bracket A 208. The guide wheel 302 drives the vertical shaft 206 to rotate around the connection point of the guide post 203 by friction with the friction strip A 301. The vertical shaft 206 drives the spraying pipe 101 and the friction wheel B 207 to rotate. The spraying pipe 101 drives the disc to rotate through the sliding frame 702 until the frustum 204 passes over the wedge-shaped strip A 209 and no longer contacts it. After the frustum 204 is released from the restriction, it can move. The compression spring A releases and drives the frustum 204 to lift upward. The frustum 204 drives the friction wheel A 205 to lift. After the friction wheel A 205 lifts, it fits with the friction wheel B 207 and limits the vertical shaft 206 through the friction wheel B 207, thereby preventing the spraying pipe 101 from rotating. Subsequently, the frustum 204 contacts the wedge-shaped strip B 402 on the left side bracket C 401. The wedge-shaped strip B 402 squeezes the frustum 204. The frustum 204 drives the friction wheel A 205 to slide downward under the force. The compression spring A contracts under the force, thereby enabling the vertical shaft 206 to move. At the same time, the guide wheel 302 contacts the friction strip B 501 on the left side. The guide wheel 302 drives the vertical shaft 206 to rotate around the connection point of the guide post 203 by friction with the friction strip B 501. The vertical shaft 206 drives the spraying pipe 101 and the friction wheel B 207 to rotate. The spraying pipe 101 drives the disc to rotate through the sliding frame 702. At the same time, the disc at the bottom of the sliding frame 702 contacts the wedge-shaped block 701 in the left front. The wedge-shaped block 701 squeezes the disc. The disc drives the three throttle blocks 703 to move downward through the sliding frame 702 under the force. The tension spring extends under the force. After the three throttle blocks 703 move downward, they block the nozzle of the spraying pipe 101, reducing the amount of anti-corrosion coating sprayed by the spraying pipe 101. This can prevent the amount of anti-corrosion coating sprayed by the spraying pipe 101 from being excessive when spraying the corner of the steel structure, resulting in a sagging phenomenon at the corner of the steel structure, effectively improving the spraying quality of the anti-corrosion coating.

[0032] Subsequently, the frustum 204 and the guide wheel 302 move to the depressions of the left wedge strip B402 and the friction strip B501 respectively. The frustum 204 no longer contacts and crosses the wedge strip B402, and the guide wheel 302 no longer contacts and crosses the friction strip B501. The compression spring A releases to drive the frustum 204 and the friction wheel A205 to lift, thereby causing the spraying pipe 101 to stop rotating. At the same time, the disc at the bottom of the sliding frame 702 crosses the wedge block 701 in the front left. After the disc is released from the restriction, it can move. The tension spring contracts and drives the three throttle blocks 703 to move back to their original positions through the disc and the sliding frame 702. After the throttle blocks 703 return to their original positions, the spraying amount of the spraying pipe 101 is restored. The electric slider 202 continues to move, causing the spraying pipe 101 to spray anti-corrosion paint on the surface of the steel structure. Subsequently, the frustum 204 and the guide wheel 302 contact the left wedge strip B402 and the friction strip B501 again, thereby causing the spraying pipe 101 to rotate. At the same time, the disc at the bottom end of the sliding frame 702 contacts the wedge block 701 in the back left, thereby causing the three throttle blocks 703 to move downward, reducing the amount of anti-corrosion paint sprayed by the spraying pipe 101 until the frustum 204 and the guide wheel 302 cross the left wedge strip B402 and the friction strip B501 respectively, thereby causing the spraying pipe 101 to stop rotating. At the same time, the disc at the bottom end of the sliding frame 702 crosses the wedge block 701 in the back left, thereby causing the three throttle blocks 703 to move back to their original positions. Then the electric slider 202 continues to move, and the frustum 204, the guide wheel 302 and the disc at the bottom end of the sliding frame 702 contact the remaining wedge strip A209, wedge strip B402, wedge block 701, friction strip A301 and friction strip B501 respectively, repeating the above steps and achieving the same effect until the electric slider 202 slides to the initial position, thus completing the spraying of anti-corrosion paint on the steel structure.

[0033] Such as Figure 2As shown, in the second state, gusset plates are provided at the web of the steel structure. By setting gusset plates at the web of the steel structure, the strength of the steel structure can be effectively improved. In the second state, when the spraying pipe 101 moves to the position of the gusset plate, it needs to rotate reciprocally, and the amount of anticorrosive paint sprayed by the spraying pipe 101 is reduced, so as to prevent the anticorrosive paint sprayed by the spraying pipe 101 from sagging at the connection between the gusset plate and the steel structure. Before lifting the handle 1, insert the inserting rod 602 into the inserting socket 601, and insert the throttling strip 704 into the grooves of two adjacent wedge blocks 701. Then repeat the above steps to make the spraying pipe 101 spray anticorrosive paint on the surface of the steel structure. It should be noted that taking the left wedge strip D802 as an example, when the frustum 204 and the guide wheel 302 move to the depressions of the left wedge strip B402 and the friction strip B501 respectively, the frustum 204 will contact the left wedge strip D802, and the wedge strip D802 will continue to squeeze the frustum 204, so that the spraying pipe 101 can continue to move. At the same time, friction is generated between the guide wheel 302 and the friction strip D801, making the spraying pipe 101 rotate, so that the spraying pipe 101 sprays anticorrosive paint on the surface of the gusset plate. When the disk at the bottom end of the sliding frame 702 passes over the left front wedge block 701, the throttling strip 704 continues to squeeze the disk at the bottom end of the sliding frame 702, so that the three throttling blocks 703 keep blocking the nozzle of the spraying pipe 101, reducing the amount of anticorrosive paint sprayed by the spraying pipe 101. Thus, it can prevent the amount of anticorrosive paint sprayed by the spraying pipe 101 from being too much when spraying at the connection between the gusset plate and the steel structure, resulting in sagging at the connection between the gusset plate and the steel structure, and further improving the spraying quality of the anticorrosive coating. Subsequently, the frustum 204 passes over the left wedge strip D802 and contacts the left wedge strip C603, so that the spraying pipe 101 can continue to move. At the same time, the guide wheel 302 passes over the left friction strip D801 and generates friction with the friction strip C604, so that the spraying pipe 101 rotates in the opposite direction until the frustum 204 and the guide wheel 302 contact the left wedge strip B402 and the friction strip B501 again, and repeat the above steps to achieve the same effect.

[0034] Through the above steps, it is possible to control the rotation angle of the spraying pipe 101 according to whether the steel structure is equipped with gusset plates, ensuring the spraying effect of the anticorrosive paint.

[0035] After completing the spraying work of the anticorrosive paint, the electric slider 202 slides to the initial position, closes the spraying pipe 101, controls the telescopic end of the electric push rod 1002 to contract. The telescopic end of the electric push rod 1002 applies a pulling force to the two guide rails 201 through two connecting rods 1003. The two guide rails 201 are stressed and rotate and reset with the connection of the mounting seat 1001 as the center of the circle. At the same time, the elastic telescopic rod A and the elastic telescopic rod B both release and extend and reset, and drive the positioning rod 1102 and the positioning plate 1103 to move and reset respectively.

[0036] The above embodiments are provided for those skilled in the art to implement or use the present invention. Those skilled in the art can make various modifications or changes to the above embodiments without departing from the inventive concept of the present invention. Therefore, the protection scope of the present invention is not limited by the above embodiments, but should be the maximum scope that conforms to the innovative features mentioned in the claims.

Claims

1. An anti-corrosion spraying device for a bridge column steel structure connection member, comprising a handle (1), a spraying pipe (101) being arranged on the upper side of the handle (1), characterized in that: The spraying tube (101) further comprises a throttling mechanism, wherein the throttling mechanism is arranged in the spraying tube (101), a steering mechanism is arranged on the lower side of the spraying tube (101), the steering mechanism comprises a guide rail (201), the guide rail (201) is symmetrically arranged on the upper side of the handle (1), a positioning mechanism is arranged on the guide rail (201), an electric slider (202) is slidably connected in the guide rail (201), a guide column (203) is fixedly connected to the electric slider (202), a frustum (204) and a friction wheel A (205) are slidably sleeved on the guide column (203), the frustum (204) and the friction wheel A (205) are slidably sleeved on the guide column (203), and the frustum (204) and the friction wheel A (205) are slidably sleeved on the guide column (203). A compression spring A is arranged between the electric slider (202), the frustum (204) is fixedly connected to the friction wheel A (205), one end of the guide column (203) is rotatably connected to a vertical shaft (206), the spray pipe (101) is fixedly connected to the vertical shaft (206), a friction wheel B (207) used in conjunction with the friction wheel A (205) is fixedly sleeved on the vertical shaft (206), a bracket A (208) is symmetrically fixedly connected to the guide rail (201), and a wedge-shaped bar A (209) used in conjunction with the frustum (204) is fixedly connected to one side of the bracket A (208).

2. The anti-corrosion spraying device for the steel structure connection member of a bridge column according to claim 1 is characterized in that: The steering mechanism also includes a friction strip A (301), the friction strip A (301) is fixedly connected to the bracket A (208), and the outer wall fixed sleeve of the vertical shaft (206) is provided with a guide wheel (302) used in conjunction with the friction strip A (301).

3. The anti-corrosion spraying device for the steel structure connection member of a bridge column according to claim 2 is characterized in that: The steering mechanism further comprises a bracket C (401), the bracket C (401) being fixedly connected to the guide rail (201), and a wedge-shaped bar B (402) used in conjunction with the frustum (204) being fixedly connected to one side of the bracket C (401).

4. The anti-corrosion spraying device for the steel structure connection member of a bridge column according to claim 3 is characterized in that: The steering mechanism also includes a friction strip B (501), and one side of the bracket C (401) is fixedly connected to the friction strip B (501) for use in conjunction with the guide wheel (302).

5. The anti-corrosion spraying device for the bridge column steel structure connection member according to claim 4 is characterized in that: The steering mechanism further comprises a plug-in seat (601), one side of the guide rail (201) is fixedly connected to the plug-in seat (601), an insertion rod (602) is inserted into the plug-in seat (601), one end of the insertion rod (602) is fixedly connected to a wedge-shaped strip C (603) used in conjunction with the cone (204), and is also fixedly connected to a friction strip C (604) used in conjunction with the guide wheel (302).

6. The anti-corrosion spraying device for the bridge column steel structure connection member according to claim 4 is characterized in that: The throttling mechanism comprises a wedge block (701), the wedge block (701) is symmetrically fixed to the bracket C (401), the outer wall sliding sleeve of the vertical shaft (206) is provided with a disc used in conjunction with the wedge block (701), a tension spring is provided between the disc and the spray pipe (101), a sliding frame (702) is fixed to the top of the disc, the sliding frame (702) is slidably connected to the spray pipe (101) in a penetrating manner, and a plurality of evenly distributed throttling blocks (703) are fixed to the sliding frame (702).

7. The anti-corrosion spraying device for the bridge column steel structure connection member according to claim 6 is characterized by: The throttling mechanism further comprises a throttling strip (704), a groove being formed on one side of the wedge-shaped block (701), the throttling strip (704) being inserted into the groove of the wedge-shaped block (701), the bottom of the throttling strip (704) being fixedly connected to a friction strip D (801) used in conjunction with the guide wheel (302) via a mounting plate, and the bottom of the friction strip D (801) being fixedly connected to a wedge-shaped strip D (802) used in conjunction with the cone (204) via a vertical plate.

8. The anti-corrosion spraying device for the bridge column steel structure connection member according to claim 1 is characterized by: The positioning mechanism comprises a universal shaft (901), the top end of the handle (1) is hingedly connected to the universal shaft (901), one end of the universal shaft (901) is fixedly connected to a vertical rod (902), a return spring is arranged between the vertical rod (902) and the handle (1), one end of the vertical rod (902) is fixedly connected to a mounting seat (1001), the two guide rails (201) are both hingedly connected to the mounting seat (1001), an electric push rod (1002) is installed on the mounting seat (1001), the telescopic end of the electric push rod (1002) is symmetrically hingedly connected to a connecting rod (1003), and the connecting rod (1003) is hingedly connected to the guide rail (201).

9. The anti-corrosion spraying device for the bridge column steel structure connection member according to claim 9 is characterized in that: The positioning mechanism also includes a support plate (1101), the support plate (1101) is fixedly connected to the other side of the guide rail (201), a positioning rod (1102) is provided on one side of the support plate (1101), and an elastic telescopic rod A is provided between the positioning rod (1102) and the support plate (1101).

10. The anti-corrosion spraying device for the bridge column steel structure connection member according to claim 10, characterized in that: The positioning mechanism further comprises a positioning plate (1103), the positioning plate (1103) being arranged on the lower side of the mounting seat (1001), and an elastic telescopic rod B being arranged between the positioning plate (1103) and the mounting seat (1001).

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