A spraying device for anti-corrosion coating on steel structure surface

Abstract

The present invention relates to the technical field of steel structure surface anticorrosion, and provides a device for spraying anticorrosion coatings on steel structure surfaces, comprising a mounting rod, and a mounting seat fixed at one end of the mounting rod, and further comprising: a support frame rotatably connected to one end of the mounting seat, the end of the support frame being rotatably connected to a rotating shaft, a mounting frame being fixed on the rotating shaft, a mounting frame being rotatably connected to the mounting frame along the length direction, and a plurality of nozzles being evenly mounted on the mounting pipe; a retracting mechanism is provided on the mounting rod. The retracting mechanism drives the support frame and the mounting frame to rotate, so that the mounting seat, the support frame and the mounting frame are concavely unfolded or folded in a straight line, and when spraying the anticorrosion coating on the bottom of a low steel structure, the sprayer does not need to bend over to operate, and when spraying the anticorrosion coating on the top of a high steel structure, the operator does not need to use climbing tools to work at a high place, thereby reducing the work intensity of the sprayer and improving the safety of spraying the anticorrosion coating on the steel structure.

Description

Technical Field

[0001] The invention belongs to the technical field of steel structure surface anticorrosion, and in particular relates to a spraying device for an anticorrosion coating on the surface of a steel structure. Background Art

[0002] ‌ Spraying anti-corrosion coating on the surface of steel structures can prevent or slow down the corrosion of steel structures caused by external environmental factors (such as oxygen, moisture, chemicals, etc.), thereby ensuring the durability, safety and service life of the steel structures. ‌‌

[0003] When spraying anti-corrosion coating on existing steel structures, workers hold a spray gun and use a booster pump and a hose to pump the anti-corrosion liquid into the spray gun, so that the anti-corrosion liquid sprays out from the spray gun. The workers hold the spray gun and spray the anti-corrosion coating on various surfaces of the steel structure.

[0004] When workers hold a spray gun and spray the anti-corrosion coating on the top of a high steel structure, they need to use a climbing tool to spray the anti-corrosion coating on the top of the steel structure with a spray gun at a high place. When spraying a long steel structure, the workers need to constantly move the position of the climbing device to spray the steel structure, which makes the spraying of the steel structure more troublesome and there are safety hazards for workers working at heights. When workers spray the anti-corrosion coating on the bottom of a low steel structure, they need to bend down and place the spray gun at the bottom of the steel structure. When spraying a long steel structure, the workers need to bend down and walk for a long time while spraying, which makes the labor intensity of the workers high. Therefore, the existing device for spraying anti-corrosion coating on steel structures is still inconvenient to use. Summary of the invention

[0005] The purpose of an embodiment of the present invention is to provide a device for spraying anti-corrosion coatings on the surface of steel structures, aiming to solve the problem that when workers hold a spray gun to spray anti-corrosion coatings on the top of a high steel structure, the workers need to use climbing tools, and when spraying anti-corrosion coatings on the bottom of a low steel structure, the workers need to bend down and place the spray gun at the bottom of the steel structure, and the existing devices for spraying anti-corrosion coatings on steel structures are inconvenient to use.

[0006] The present invention is implemented as follows: a device for spraying an anti-corrosion coating on the surface of a steel structure comprises a mounting rod and a mounting seat fixed at one end of the mounting rod, and further comprises: a support frame rotatably connected to one end of the mounting seat, the end of the support frame is rotatably connected to a rotating shaft, a mounting frame is fixed on the rotating shaft, a mounting frame is rotatably connected to the mounting frame along the length direction, and a plurality of nozzles are evenly installed on the mounting tube; a retraction mechanism is provided on the mounting rod, and the retraction mechanism is used to drive the support frame and the mounting frame to rotate, so that the mounting seat, the support frame and the mounting frame are concavely unfolded or folded in a straight line; a bevel gear transmission assembly is provided on the mounting tube, and when the mounting frame and the rotating shaft rotate relative to the support frame, the bevel gear transmission assembly drives the mounting tube to rotate.

[0007] In a further technical solution, the retracting mechanism comprises a sliding block slidably connected to the mounting rod along the length direction, the sliding block is rotatably connected to a connecting rod, a screw rod is rotatably connected inside the mounting rod, and the screw rod is threadedly connected to the sliding block;

[0008] The support frame includes a rotating frame and a telescopic frame, the rotating frame is rotatably connected to the mounting seat, the telescopic frame is slidably connected to the rotating frame along the length direction of the rotating frame, and the rotating shaft is rotatably connected to the end of the telescopic frame;

[0009] One end of the telescopic frame close to the rotating frame is fixedly connected with a tension spring, and the end of the tension spring is fixed on the rotating frame;

[0010] The end of the connecting rod is rotatably connected to the side wall of the telescopic frame, and the side wall of the rotating frame is provided with an avoidance groove for avoiding movement of the rotation connection between the connecting rod and the telescopic frame;

[0011] The mounting seat is provided with a first support surface and a second support surface, and the first support surface and the second support surface are vertically arranged;

[0012] The rotating frame is provided with a gear rack transmission assembly. When the telescopic frame moves on the rotating frame, the gear rack transmission assembly drives the mounting frame to rotate.

[0013] According to a further technical solution, the rack and pinion transmission assembly includes a rack fixed on a rotating frame, and a gear 1 fixed on a rotating shaft, wherein the gear 1 is meshed with the rack.

[0014] According to a further technical solution, the bevel gear transmission assembly includes a fixed frame fixed on the telescopic frame, bevel gear one is fixed on the fixed frame, the rotating shaft passes through the fixed frame and bevel gear one, bevel gear two is fixed on the mounting tube, and bevel gear two is meshed with bevel gear one.

[0015] A further technical solution is that an extension rod is slidably connected to the mounting rod, a limiting bolt is threadedly connected to the extension rod, the end of the limiting bolt contacts the side wall of the mounting rod, a rotating sleeve is rotatably connected to the extension rod, an axial transmission mechanism is arranged on the extension rod, and the axial transmission mechanism connects the rotating sleeve to the screw rod.

[0016] A further technical solution is that the axial transmission mechanism includes a transmission shaft rotatably connected in the extension rod, a transmission section is provided on the transmission shaft, a guide groove is provided in the screw rod along the length direction, the transmission section is slidably connected in the guide groove, a gear transmission assembly is provided on the transmission shaft, and the transmission shaft is transmission-connected to the rotating sleeve through the gear transmission assembly.

[0017] According to a further technical solution, the gear transmission assembly includes gear 2 fixed on the transmission shaft and an inner gear ring fixed on the inner wall of the rotating sleeve, and gear 3 is rotatably connected to the extension rod, and gear 3 is meshed with gear 2 and the inner gear ring at the same time.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The retracting mechanism drives the support frame and the mounting frame to rotate, so that the mounting seat, the support frame and the mounting frame are unfolded in a concave shape or folded in a straight line, and the anti-corrosion coating can be sprayed on the surface of steel structures at different heights and angles. When spraying the anti-corrosion coating on the bottom of the low steel structure, the sprayer does not need to bend down to operate. When spraying the anti-corrosion coating on the top of the high steel structure, the operator does not need to use climbing tools to work at high places, thereby reducing the work intensity of the sprayer and improving the safety of anti-corrosion coating spraying on steel structures;

[0020] 2. When the mounting frame and the rotating shaft rotate relative to the supporting frame, the bevel gear transmission assembly drives the mounting tube to rotate, and the mounting tube drives the multiple nozzles to rotate, thereby changing the spray angle of the nozzle, so that the spray direction of the nozzle forms a V-shaped angle with the mounting rod, thereby preventing the antiseptic liquid from spraying toward the user;

[0021] 3. Through the arrangement of the mounting rod, the extension rod, the transmission shaft, the inner gear ring, the gear two and the gear three, the anti-corrosion coating can be sprayed on the steel structures at different heights, thereby facilitating the spraying of the anti-corrosion coating on the steel structures at different heights. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of a spraying device for anti-corrosion coating on the surface of a steel structure provided by the present invention in a conventional spraying state;

[0023] Figure 2 A schematic diagram of the structure of a spraying device for anti-corrosion coating on the surface of a steel structure provided by the present invention spraying a high or low steel structure;

[0024] Figure 3 The present invention provides Figure 2 Schematic diagram of the connection structure of the middle mounting seat, the support frame and the mounting frame;

[0025] Figure 4 The present invention provides Figure 3 Schematic diagram of the connection structure between the middle telescopic frame and the mounting frame;

[0026] Figure 5 The present invention provides Figure 4 A is a schematic diagram of the enlarged structure of the middle part;

[0027] Figure 6 The present invention provides Figure 3 A schematic diagram of the structure of the middle mounting seat;

[0028] Figure 7 The present invention provides Figure 2 A schematic diagram of the structure of the middle mounting rod;

[0029] Figure 8 The present invention provides Figure 2 Schematic diagram of the internal structure of the middle extension rod;

[0030] Fig. 9 A schematic diagram of the structure of a spraying device for anti-corrosion coating on the surface of a steel structure provided by the present invention spraying a low-lying steel structure;

[0031] Fig.10 A schematic structural diagram of a spraying device for anti-corrosion coating on the surface of a steel structure provided by the present invention spraying a high steel structure.

[0032] In the accompanying drawings: 101, mounting rod; 102, mounting seat; 103, supporting frame; 1031, rotating frame; 1032, telescopic frame; 104, mounting frame; 105, mounting tube; 106, nozzle; 107, rotating shaft; 2, gear rack transmission assembly; 201, rack; 202, gear one; 3, bevel gear transmission assembly; 301, fixed frame; 302, bevel gear one; 303, bevel gear two; 401, extension rod; 402, rotating sleeve; 403, limiting bolt; 5, axial transmission mechanism; 501, transmission shaft; 502, transmission section; 503, guide groove; 6, gear transmission assembly; 601, inner gear ring; 602, gear two; 603, gear three; 7, contraction mechanism; 701, sliding block; 702, screw rod; 703, connecting rod; 704, tension spring; 705, support surface one; 706, support surface two. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0035] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Fig. 9 and Fig.10As shown, a spraying device for anti-corrosion coating on the surface of a steel structure provided by an embodiment of the present invention includes a mounting rod 101, and a mounting seat 102 fixed at one end of the mounting rod 101, and also includes: a support frame 103 rotatably connected to one end of the mounting seat 102, the end of the support frame 103 is rotatably connected to a rotating shaft 107, a mounting frame 104 is fixed on the rotating shaft 107, a mounting frame 104 is rotatably connected to the mounting frame 104 along the length direction, and a mounting tube 105 is evenly installed on the mounting tube 105; a retracting mechanism 7 is provided on the mounting rod 101, and the retracting mechanism 7 is used to drive the supporting frame 103 and the mounting frame 104 to rotate, so that the mounting seat 102, the supporting frame 103 and the mounting frame 104 are concavely unfolded or folded in a straight line; a bevel gear transmission assembly 3 is provided on the mounting tube 105, and when the mounting frame 104 and the rotating shaft 107 rotate relative to the support frame 103, the bevel gear transmission assembly 3 drives the mounting tube 105 to rotate.

[0036] In the embodiment of the present invention, the installation pipe 105 is connected to a pump through a hose. The pump is a pneumatic diaphragm pump or a quantitative sprayer. When the anti-corrosion coating is sprayed on the surface of a conventional steel structure, the spraying device of the anti-corrosion coating on the surface of the steel structure is in a Figure 1 State, the mounting frame 104 rotates in the support frame 103, and the support frame 103 rotates in the mounting seat 102. The mounting seat 102, the support frame 103 and the mounting frame 104 are folded in a straight line, and the spray direction of the nozzle 106 is parallel to the length direction of the mounting rod 101. The pump pressurizes the anti-corrosion liquid into the mounting pipe 105, and the anti-corrosion liquid in the mounting pipe 105 is sprayed out through the nozzle 106; when the anti-corrosion coating is sprayed on the top of the high steel structure or the bottom of the low steel structure, the retraction mechanism 7 drives the support frame 103 and the mounting frame 104 to rotate, so that the mounting seat 102, the support frame 103 and the mounting frame 104 are concavely expanded. When the mounting frame 104 and the rotating shaft 107 rotate relative to the support frame 103, the bevel gear transmission assembly 3 drives the mounting pipe 105 to rotate, and the mounting pipe 105 drives multiple nozzles 106 to rotate, thereby changing the spray angle of the nozzle 106. At this time, when the anti-corrosion coating is sprayed on the top of the high steel structure, such as Fig.10 The spraying device for anti-corrosion coating on the surface of steel structure is shown in the figure. When spraying anti-corrosion coating on the bottom of low steel structure, Fig. 9The device for spraying anti-corrosion coating on the surface of steel structure shown in the operation is that when spraying the anti-corrosion coating on the bottom of the low steel structure, the sprayer does not need to bend down to operate. When spraying the anti-corrosion coating on the top of the high steel structure, the operator does not need to use climbing tools to work at high altitudes, thereby reducing the work intensity of the sprayer and improving the safety of anti-corrosion coating spraying on the steel structure. The installation tube 105 drives multiple nozzles 106 to rotate and change the spraying angle of the nozzle 106, which can prevent the nozzle 106 from spraying toward the user holding the installation rod 101 when the installation seat 102, the support frame 103 and the installation frame 104 are unfolded, so that the spraying direction of the nozzle 106 forms a V-shaped angle with the installation rod 101, thereby preventing the anti-corrosion liquid from spraying toward the user.

[0037] like Figure 1-Figure 6 As shown, as a preferred embodiment of the present invention, the retracting mechanism 7 includes a sliding block 701 slidably connected to the mounting rod 101 along the length direction, a connecting rod 703 is rotatably connected to the sliding block 701, a screw rod 702 is rotatably connected inside the mounting rod 101, and the screw rod 702 is threadedly connected to the sliding block 701; the supporting frame 103 includes a rotating frame 1031 and a telescopic frame 1032, the rotating frame 1031 is rotatably connected to the mounting seat 102, the telescopic frame 1032 is slidably connected to the rotating frame 1031 along the length direction of the rotating frame 1031, and the rotating shaft 107 is rotatably connected to the end of the telescopic frame 1032; the end of the telescopic frame 1032 close to the rotating frame 1031 is fixedly connected to a tension spring 704, and the end of the tension spring 704 is fixed On the rotating frame 1031; the end of the connecting rod 703 is rotatably connected to the side wall of the telescopic frame 1032, and the side wall of the rotating frame 1031 is provided with an avoidance groove for avoiding the movement of the rotating connection between the connecting rod 703 and the telescopic frame 1032; the mounting seat 102 is provided with a support surface 1 705 and a support surface 2 706, and the support surface 1 705 and the support surface 2 706 are vertically arranged; the rotating frame 1031 is provided with a gear rack transmission assembly 2, and when the telescopic frame 1032 moves on the rotating frame 1031, the gear rack transmission assembly 2 drives the mounting frame 104 to rotate; the gear rack transmission assembly 2 includes a rack 201 fixed on the rotating frame 1031, and a gear 1 202 fixed on the rotating shaft 107, and the gear 1 202 is meshed with the rack 201.

[0038] In the embodiment of the present invention, when spraying the anti-corrosion coating on the top of the high steel structure or the bottom of the low steel structure, the screw rod 702 is rotated, and the screw rod 702 drives the sliding block 701 to move through the threaded transmission. The sliding block 701 pushes the telescopic frame 1032 through the connecting rod 703, and the telescopic frame 1032 drives the rotating frame 1031 to rotate under the elastic force of the tension spring 704 until the side wall of the rotating frame 1031 contacts the second support surface 706, and the rotating frame 1031 and the telescopic frame 1032 cannot continue to rotate. When the rotating frame 1031 is guided, the sliding block 701 pushes the telescopic frame 1032 through the connecting rod 703, so that the telescopic frame 1032 overcomes the elastic force of the tension spring 704 and moves, and the telescopic frame 1032 drives the rotating shaft 107 and the gear 1 202 to move relative to the rack 201, the rack 201 drives the gear 1 202 to rotate, the gear 1 202 drives the rotating shaft 107 to rotate, the rotating shaft 107 drives the mounting frame 104 to rotate, and the mounting frame 104 drives the mounting tube 105 to rotate until the mounting frame 104 is moved. The side wall of the mounting frame 104 contacts the inner wall of the telescopic frame 1032, thereby causing the mounting seat 102, the support frame 103 and the mounting frame 104 to expand concavely; when the spraying device of the anti-corrosion coating on the surface of the steel structure is reset, the screw rod 702 is reversed, and the screw rod 702 drives the sliding block 701 to move in the opposite direction through the thread transmission. When the sliding block 701 moves in the opposite direction, the tension spring 704 first pulls the telescopic frame 1032 to move toward the rotating frame 1031 and reset, and the telescopic frame 1032 drives the rotating shaft 107 and the gear 202 to move relative to each other. When the rack 201 moves in the opposite direction, the rack 201 pushes the gear 1 202 to reverse, the gear 1 202 drives the rotating shaft 107 to reverse, the rotating shaft 107 drives the mounting frame 104 to reverse, until the mounting frame 104 is transferred into the telescopic frame 1032, and then the sliding block 701 drives the supporting frame 103 to reverse through the connecting rod 703, until the side wall of the supporting frame 103 contacts the support surface 1 705, at this time, the mounting seat 102, the supporting frame 103, the mounting frame 104 and the mounting tube 105 are folded together to form a straight line.

[0039] like Figure 3-Figure 6 As shown, as a preferred embodiment of the present invention, the bevel gear transmission assembly 3 includes a fixed frame 301 fixed on the telescopic frame 1032, a bevel gear 1 302 is fixed on the fixed frame 301, the rotating shaft 107 passes through the fixed frame 301 and the bevel gear 1 302, a bevel gear 2 303 is fixed on the mounting tube 105, and the bevel gear 2 303 is meshed with the bevel gear 1 302.

[0040] In the embodiment of the present invention, when the mounting frame 104 rotates relative to the telescopic frame 1032, the mounting frame 104 drives the mounting tube 105 and the second bevel gear 303 to rotate relative to the first bevel gear 302, the first bevel gear 302 drives the second bevel gear 303 to rotate, and the second bevel gear 303 drives the mounting tube 105 to rotate.

[0041] like Figure 1 , Figure 2 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 As shown, as a preferred embodiment of the present invention, the installation rod 101 is slidably connected with an extension rod 401, and the extension rod 401 is threadedly connected with a limit bolt 403, and the end of the limit bolt 403 contacts the side wall of the installation rod 101, and the extension rod 401 is rotatably connected with a rotating sleeve 402, and the extension rod 401 is provided with an axial transmission mechanism 5, and the axial transmission mechanism 5 makes the rotating sleeve 402 and the screw rod 702 transmission connected, and the axial transmission mechanism 5 includes a transmission shaft 501 rotatably connected in the extension rod 401, and the transmission shaft 501 is provided with a transmission The movable section 502 has a guide groove 503 arranged in the length direction of the screw rod 702, the transmission section 502 is slidably connected in the guide groove 503, the transmission shaft 501 is provided with a gear transmission assembly 6, the transmission shaft 501 is transmission-connected with the rotating sleeve 402 through the gear transmission assembly 6, the gear transmission assembly 6 comprises a gear 2 602 fixed on the transmission shaft 501, and an inner gear ring 601 fixed on the inner wall of the rotating sleeve 402, a gear 3 603 is rotationally connected to the extension rod 401, and the gear 3 603 is meshed with the gear 2 602 and the inner gear ring 601 at the same time.

[0042] In the embodiment of the present invention, when spraying the anti-corrosion coating on the steel structures of different heights, the limiting bolt 403 is loosened, the position of the mounting rod 101 on the extension rod 401 is adjusted, the mounting rod 101 drives the position of the guide groove 503 and the transmission shaft 501, and then the limiting bolt 403 is tightened, the limiting bolt 403 supports the mounting rod 101, thereby fixing the mounting rod 101 and the extension rod 401, and when adjusting the shapes of the mounting seat 102, the support frame 103, the mounting frame 104 and the mounting pipe 105, the rotating sleeve 403 is rotated. 02, the rotating sleeve 402 drives the inner gear ring 601 to rotate, the inner gear ring 601 drives the gear three 603 to rotate, the gear three 603 drives the gear two 602 to rotate, the gear two 602 drives the transmission shaft 501 to rotate, the transmission shaft 501 drives the screw rod 702 to rotate through the transmission section 502 and the guide groove 503. Through the arrangement of the mounting rod 101, the extension rod 401, the transmission shaft 501, the inner gear ring 601, the gear two 602 and the gear three 603, the anti-corrosion coating can be sprayed on the steel structures of different heights.

[0043] The above embodiment of the present invention provides a spraying device for anti-corrosion coating on the surface of steel structure. The installation pipe 105 is connected to a pump through a hose. The pump is a pneumatic diaphragm pump or a quantitative sprayer. When the anti-corrosion coating is sprayed on the surface of the conventional steel structure, the spraying device for the anti-corrosion coating on the surface of the steel structure is in Figure 1State, the mounting frame 104 rotates in the support frame 103, the support frame 103 rotates in the mounting seat 102, the mounting seat 102, the support frame 103 and the mounting frame 104 are folded in a straight line, the spraying direction of the nozzle 106 is parallel to the length direction of the mounting rod 101, the pump pressurizes the antiseptic liquid into the mounting pipe 105, and the antiseptic liquid in the mounting pipe 105 is sprayed out through the nozzle 106;

[0044] When spraying the anti-corrosion coating on the top of a high steel structure or the bottom of a low steel structure, loosen the limit bolt 403, adjust the position of the installation rod 101 on the extension rod 401, the installation rod 101 drives the position of the guide groove 503 and the transmission shaft 501, and then tighten the limit bolt 403, the limit bolt 403 supports the installation rod 101, thereby fixing the installation rod 101 and the extension rod 401, and adjusting the spraying height of the nozzle 106;

[0045] The rotating sleeve 402 is rotated, and the rotating sleeve 402 drives the inner gear ring 601 to rotate, and the inner gear ring 601 drives the gear three 603 to rotate, and the gear three 603 drives the gear two 602 to rotate, and the gear two 602 drives the transmission shaft 501 to rotate, and the transmission shaft 501 drives the screw rod 702 to rotate through the transmission section 502 and the guide groove 503, and the screw rod 702 drives the sliding block 701 to move through the threaded transmission, and the sliding block 701 pushes the telescopic frame 1032 through the connecting rod 703, and the telescopic frame 1032 drives the rotating frame 1031 to rotate under the elastic force of the tension spring 704, until the side wall of the rotating frame 1031 contacts the second support surface 706, and the rotating frame 1031 and the telescopic frame 1032 can no longer rotate. At this time, under the guiding action of the rotating frame 1031, the sliding block 701 pushes the telescopic frame 1032 through the connecting rod 703, so that the telescopic frame 1032 overcomes the elastic force of the tension spring 704 and moves, and the telescopic frame 1032 drives the rotating shaft 107 and the gear 1 202 to move relative to the rack 201, the rack 201 pushes the gear 1 202 to rotate, the gear 1 202 drives the rotating shaft 107 to rotate, the rotating shaft 107 drives the mounting frame 104 to rotate, the mounting frame 104 drives the mounting tube 105 to rotate, until the side wall of the mounting frame 104 contacts the inner wall of the telescopic frame 1032, thereby making the mounting seat 102, the support frame 103 and the mounting frame 104 concavely unfolded, when the mounting frame 104 and the rotating shaft 107 rotate relative to the support frame 103, the mounting frame 104 drives the mounting tube 105 and the bevel gear 2 303 to rotate relative to the bevel gear 1 302, the bevel gear 1 302 pushes the bevel gear 2 303 to rotate, the bevel gear 2 303 drives the mounting tube 105 to rotate, the mounting tube 105 drives the plurality of nozzles 106 to rotate, thereby changing the spraying angle of the nozzle 106. At this time, when spraying an anti-corrosion coating on the top of a high steel structure, such as Fig.10 The spraying device for anti-corrosion coating on the surface of steel structure is shown in the figure. When spraying anti-corrosion coating on the bottom of low steel structure, Fig. 9The device for spraying anti-corrosion coating on the surface of steel structure shown in the operation is that when spraying the anti-corrosion coating on the bottom of the low steel structure, the sprayer does not need to bend down to operate. When spraying the anti-corrosion coating on the top of the high steel structure, the operator does not need to use climbing tools to work at high altitudes, thereby reducing the work intensity of the sprayer and improving the safety of anti-corrosion coating spraying on the steel structure. The installation tube 105 drives multiple nozzles 106 to rotate and change the spraying angle of the nozzle 106, which can prevent the nozzle 106 from spraying toward the user holding the installation rod 101 when the installation seat 102, the support frame 103 and the installation frame 104 are unfolded, so that the spraying direction of the nozzle 106 forms a V-shaped angle with the installation rod 101, thereby preventing the anti-corrosion liquid from spraying toward the user.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for spraying an anti-corrosion coating on a steel structure surface, comprising a mounting rod (101) and a mounting seat (102) fixed at one end of the mounting rod (101), characterized in that: Also includes: A support frame (103) is rotatably connected to one end of the mounting seat (102); a distal end of the support frame (103) is rotatably connected to a rotation shaft (107); a mounting frame (104) is fixed to the rotation shaft (107); a mounting pipe (105) is rotatably connected to the mounting frame (104) along a length direction; and a plurality of nozzles (106) are evenly mounted on the mounting pipe (105); The mounting rod (101) is provided with a retracting mechanism (7), and the retracting mechanism (7) is used to drive the supporting frame (103) and the mounting frame (104) to rotate, so that the mounting seat (102), the supporting frame (103) and the mounting frame (104) are unfolded in a concave shape or folded in a straight line; The mounting tube (105) is provided with a bevel gear transmission assembly (3), and when the mounting frame (104) and the rotating shaft (107) rotate relative to the supporting frame (103), the bevel gear transmission assembly (3) drives the mounting tube (105) to rotate; The retracting mechanism (7) comprises a sliding block (701) slidably connected to the mounting rod (101) along the length direction, a connecting rod (703) rotatably connected to the sliding block (701), a screw rod (702) rotatably connected inside the mounting rod (101), and the screw rod (702) is threadedly connected to the sliding block (701); The support frame (103) comprises a rotating frame (1031) and a telescopic frame (1032), wherein the rotating frame (1031) is rotatably connected to the mounting seat (102), the telescopic frame (1032) is slidably connected to the rotating frame (1031) along the length direction of the rotating frame (1031), and the rotating shaft (107) is rotatably connected to the end of the telescopic frame (1032); One end of the telescopic frame (1032) close to the rotating frame (1031) is fixedly connected to a tension spring (704), and the end of the tension spring (704) is fixed on the rotating frame (1031); The end of the connecting rod (703) is rotatably connected to the side wall of the telescopic frame (1032), and the side wall of the rotating frame (1031) is provided with an avoidance groove for avoiding movement of the rotation connection between the connecting rod (703) and the telescopic frame (1032); The mounting seat (102) is provided with a first support surface (705) and a second support surface (706), wherein the first support surface (705) and the second support surface (706) are arranged vertically; The rotating frame (1031) is provided with a gear rack transmission assembly (2), and when the telescopic frame (1032) moves on the rotating frame (1031), the gear rack transmission assembly (2) drives the mounting frame (104) to rotate.

2. The spraying device for anti-corrosion coating on the surface of steel structure according to claim 1 is characterized in that: The rack and pinion transmission assembly (2) comprises a rack (201) fixed on a rotating frame (1031), and a gear one (202) fixed on a rotating shaft (107), wherein the gear one (202) meshes with the rack (201).

3. The spraying device for anti-corrosion coating on the surface of steel structure according to claim 1 is characterized in that: The bevel gear transmission assembly (3) comprises a fixed frame (301) fixed on the telescopic frame (1032), a bevel gear 1 (302) being fixed on the fixed frame (301), the rotating shaft (107) passing through the fixed frame (301) and the bevel gear 1 (302), a bevel gear 2 (303) being fixed on the mounting tube (105), and the bevel gear 2 (303) being meshed with the bevel gear 1 (302).

4. The spraying device for anti-corrosion coating on the surface of steel structure according to claim 1 is characterized in that: An extension rod (401) is slidably connected to the mounting rod (101), a limit bolt (403) is threadedly connected to the extension rod (401), a tip of the limit bolt (403) contacts a side wall of the mounting rod (101), a rotating sleeve (402) is rotatably connected to the extension rod (401), an axial transmission mechanism (5) is provided on the extension rod (401), and the axial transmission mechanism (5) enables the rotating sleeve (402) to be transmission-connected to the screw rod (702).

5. The spraying device for anti-corrosion coating on the surface of steel structure according to claim 4 is characterized in that: The axial transmission mechanism (5) comprises a transmission shaft (501) rotatably connected in the extension rod (401), a transmission section (502) being arranged on the transmission shaft (501), a guide groove (503) being arranged in the screw rod (702) along the length direction, the transmission section (502) being slidably connected in the guide groove (503), a gear transmission assembly (6) being arranged on the transmission shaft (501), and the transmission shaft (501) being transmission-connected to the rotating sleeve (402) via the gear transmission assembly (6).

6. The spraying device for anti-corrosion coating on the surface of steel structure according to claim 5, characterized in that: The gear transmission assembly (6) comprises a second gear (602) fixed on the transmission shaft (501) and an inner gear ring (601) fixed on the inner wall of the rotating sleeve (402); a third gear (603) is rotatably connected to the extension rod (401); and the third gear (603) is meshed with the second gear (602) and the inner gear ring (601) at the same time.

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