A steel member anticorrosion processing technology

Abstract

The present application relates to the technical field of steel member corrosion prevention, and particularly relates to a steel member corrosion prevention processing technology, which adopts a spraying device, the spraying device comprises a base, an electric sliding block, a U-shaped frame, a lifting mechanism and a spraying mechanism, when the spraying cylinder moves to the outside of the supporting rod, the existing driving motor drives the spraying cylinder to rotate through belt transmission and cooperation with the connecting shaft, the paint pump is started to cooperate with the spray head through the connecting pipe to spray paint on the surface of the supporting rod during the rotation of the spraying cylinder, the spraying cylinder and the spray head can uniformly spray the supporting rod in the circumferential direction during the rotation, which reduces the possibility of uneven brushing in the traditional brushing process, and a single supporting rod corresponding to a single spraying cylinder can reduce the working area in the spraying process and reduce the possibility of collision between the spraying cylinder and the adjacent supporting rod.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of corrosion protection of steel components, and in particular to a steel component corrosion protection processing technology. BACKGROUND

[0002] The ground is muddy during construction, and water often accumulates on the ground due to low construction ground and other reasons. Therefore, in order to facilitate the walking of workers, steel plates are often laid on the ground. The common steel plate is welded from steel components. In order to avoid the steel plate from slipping directly with the ground, a supporting claw is usually welded on the steel component to increase the stability of the steel plate installed on the ground. In order to avoid corrosion of the supporting claw caused by long-term contact with water, the supporting claw needs to be painted and corrosion protected after welding.

[0003] In the traditional painting and corrosion protection process, workers usually use a brush to dip paint on the supporting claw for painting. Due to the unevenness of manual painting, the paint on the supporting claw may not be completely painted, resulting in some supporting claws still being in direct contact with the mud water, and thus the corrosion problem of the supporting claw still exists, affecting the service life of the supporting claw.

[0004] The steel components are uniformly welded with supporting claws. Since the gap between the supporting claws is small, the worker may not be able to completely insert the brush under the supporting claw when using the brush, so that there may be omissions on the surface of the supporting claw during the painting process, thereby causing poor painting effect on the surface of the supporting claw and affecting the corrosion protection effect of the surface of the supporting claw. SUMMARY

[0005] In order to solve the above problems, the present application adopts the following technical scheme: a steel component corrosion protection processing technology, which adopts a spraying device. The spraying device comprises a base, an electric sliding block, an L-shaped frame, a lifting mechanism and a spraying mechanism. The upper end surface of the base is provided with a placing groove. The electric sliding blocks are slidably arranged on the left and right sides of the upper end surface of the base. The two vertical sections of the L-shaped frame are respectively installed on the two electric sliding blocks. The horizontal section of the L-shaped frame is installed with the lifting mechanism at the lower end surface. The lifting mechanism is installed with the spraying mechanism at the lower end surface.

[0006] The spraying mechanism comprises connecting shafts, spraying barrels, paint pumps, connecting pipes, spray heads and clamping parts, wherein the lower end surface of the lifting plate is uniformly provided with a plurality of connecting shafts from left to right through bearings, the lower end surface of each connecting shaft is fixedly connected with a spraying barrel, the inside of the spraying barrel is provided with a storage groove, the upper end surface of the spraying barrel is provided with a feeding port, the feeding port is connected with a sealing plug, the lower end surface of the inner wall of the spraying barrel is provided with a placing groove on the left side, the inside of the placing groove is provided with a paint pump connected with the storage groove, the right end of the paint pump is connected with a connecting pipe, the connecting pipe is installed on the left inner wall of the spraying barrel, a plurality of spray heads are uniformly installed on the left inner wall of the spraying barrel from top to bottom, the spray heads are connected with the connecting pipe, and the lower end of the spraying barrel is provided with a clamping part.

[0007] In the process of corrosion prevention of the steel component by using the spraying device, the following steps are included: first step, placing treatment: the steel component is pushed into the placing groove from the front of the base.

[0008] Second step, moving treatment: the bidirectional cylinder is started to drive the hinged rod to open through the cooperation of the connecting rod and the sliding block, at this time, the hinged rod drives the spraying barrel to move downward through the cooperation of the connecting spring rod and the lifting plate, so that the supporting rod is located in the spraying barrel.

[0009] Third step, spraying treatment: the existing driving motor drives the connecting shaft to rotate through the belt transmission mode, and then the connecting shaft drives the spraying barrel to rotate, and the paint pump is started to cooperate with the spray head through the connecting pipe to spray paint on the surface of the supporting rod during the rotation of the spraying barrel.

[0010] Fourth step, overall spraying: the electric sliding block is started to drive the spraying mechanism to spray a plurality of supporting rods through the cooperation of the H-shaped frame and the lifting mechanism.

[0011] Preferably, the lifting mechanism comprises a bidirectional cylinder, a connecting rod, a sliding block, a hinged rod, a connecting spring rod and a lifting plate, wherein the bidirectional cylinder is installed on the middle part of the lower end surface of the horizontal section of the H-shaped frame through the cylinder seat, the lifting plate is arranged between the two vertical sections of the H-shaped frame, the left-right symmetrical connecting spring rods are installed between the lifting plate and the horizontal section of the H-shaped frame, the left-right symmetrical hinged rods are installed between the lifting plate and the horizontal section of the H-shaped frame, the hinged rod is formed by rotatingly connecting two hinged connecting rods through a hinge shaft, the sliding blocks are hingedly connected to the upper and lower ends of the hinged connecting rod, the sliding blocks are slidingly arranged on the lower end surface of the horizontal section of the H-shaped frame and the upper end surface of the lifting plate, the connecting rods are respectively installed on the left and right two telescopic ends of the bidirectional cylinder, and the ends of the connecting rods away from the bidirectional cylinder are fixedly connected with the sliding blocks close to the bidirectional cylinder.

[0012] Preferably, the clamping part comprises a clamping support, an extension spring rod, a clamping plate, an air bag, a communication pipe, a U-shaped pipe and a main pipe, wherein the lower end surface of the spraying cylinder is provided with a clamping support in the form of an annular structure through a bearing, the clamping support is internally provided with an annular groove, the annular groove is internally provided with left-right symmetrical clamping plates, the opposite surfaces of the clamping plates are provided with front-rear symmetrical extension spring rods between the inner walls of the annular groove, the annular groove is internally provided with air bags between the two extension spring rods, the upper end surface of the clamping support is provided with left-right symmetrical communication pipes, the same clamping support is jointly clamped with a U-shaped pipe, and the U-shaped pipes are jointly connected with the main pipe.

[0013] Preferably, the left end surface of the left vertical section of the U-shaped frame is provided with a positioning block below, the rear end surface of the positioning block is provided with an arc-shaped groove, the upper end surface of the base is uniformly provided with a plurality of positioning rods from front to back, the left end surface of the base is provided with a positioning groove corresponding to the positioning rods, and the lower end of the positioning rod is located in the positioning groove, the lower end surface of the positioning rod is provided with a push block, and the push block and the lower end surface of the positioning groove are provided with a reset spring rod.

[0014] Preferably, the upper end surface of the base is provided with front-rear symmetrical L-shaped clamping plates, the left and right sides of the clamping plates are provided with support protrusions in contact with the upper end surface of the base, and the support protrusions are screwed with fastening bolts matched with the base.

[0015] Preferably, the upper end of the communication pipe is provided with an opening and closing valve matched with the U-shaped pipe, when the U-shaped pipe is clamped on the communication pipe, the opening and closing valve is opened at this time, the main pipe can pump gas into the communication pipe through the U-shaped pipe, when the U-shaped pipe leaves the communication pipe, the opening and closing valve is closed at this time, the gas in the air bag will not leak through the communication pipe, so the opening and closing valve can ensure that the communication pipe is opened and closed with the clamping and leaving of the U-shaped pipe.

[0016] Preferably, the upper end surface of the push block is jointly clamped with a push plate.

[0017] Preferably, the upper end surface of the clamping plate is provided with an arc-shaped shielding plate, which can shield the excess paint in the spraying process, so as to avoid the excess paint from falling to the outside of the spraying cylinder and affecting the environmental sanitation.

[0018] Preferably, the right end surface of the nozzle is provided in the form of an arc surface, a plurality of spray holes are uniformly arranged on the arc surface in the circumferential direction, the arrangement of the arc surface can increase the spraying range of the spray holes, so that adjacent nozzles will not have a dead angle on the supporting rod during the spraying process, and the spraying effect of the surface of the supporting rod is improved.

[0019] The front and rear ends of the hinge shaft are jointly provided with U-shaped plates, the upper end surface of the horizontal section of the U-shaped plate is provided with a supporting spring rod between the lower end surface of the horizontal section of the U-shaped frame, and the supporting spring rod and the U-shaped plate are matched with each other to increase the stability of the hinge rod during the up-down movement and reduce the possibility of shaking of the hinge rod.

[0020] The present application has the advantages that: 1. In the spraying mechanism designed by the present application, when the spraying cylinder moves to the outside of the support rod, the existing driving motor drives the spraying cylinder to rotate through belt transmission and cooperation with the connecting shaft, and the paint pump is started to cooperate with the spray head through the connecting pipe to spray paint on the surface of the support rod during the rotation of the spraying cylinder. The spraying cylinder and the spray head can cooperate with each other to uniformly spray the support rod in the circumferential direction, reducing the possibility of uneven brushing in the traditional brushing process. A single spraying cylinder corresponding to a single support rod can reduce the working area during spraying and reduce the possibility of collision between the spraying cylinder and the adjacent support rod during spraying.

[0021] 2. In the lifting mechanism designed by the present application, the left and right adjacent two hinged rods and the connecting spring rod cooperate with each other to increase the stability of the lifting plate during lifting, avoiding the uneven force on the lifting plate caused by the spraying mechanism below the lifting plate, affecting the service life of the lifting plate.

[0022] 3. In the clamping part designed by the present application, when the spraying cylinder moves to the outside of the support rod, the existing air pump cooperates with the U-shaped pipe through the main pipe to inflate the air bag through the communication pipe. The clamping plate is fixed on the support block during the expansion of the air bag, and then the clamping plate and the clamping bracket cooperate to ensure the stability of the spraying cylinder during rotation, avoiding the possibility of shaking of the spraying cylinder during rotation. BRIEF DESCRIPTION OF DRAWINGS

[0023] The present application will be further described below in conjunction with the drawings and examples.

[0024] Figure 1 is the steel member corrosion prevention processing process flowchart of the present application.

[0025] Figure 2 is the three-dimensional structure schematic diagram of the present application.

[0026] Figure 3 is the A part of the present application. Figure 2 is the A part of the present application.

[0027] Figure 4 is the front view of the present application.

[0028] Figure 5 is the three-dimensional structure schematic diagram of the U-shaped frame and the lifting mechanism installation of the present application.

[0029] Figure 6 is the three-dimensional structure schematic diagram of the left side of the base and the electric sliding block, U-shaped frame installation of the present application.

[0030] Figure 7 is the three-dimensional structure schematic diagram of the spraying mechanism of the present application.

[0031] Figure 8This is a schematic diagram of the internal structure of the spray box of the present invention.

[0032] Figure 9 This is the present invention. Figure 8 A magnified view of section B.

[0033] Figure 10 This is a schematic diagram of the three-dimensional structure of the nozzle of the present invention.

[0034] Figure 11 This is a front view of the clamping bracket and connecting pipe of the present invention.

[0035] Figure 12 This is a schematic diagram of the internal structure of the clamping bracket of the present invention (viewed from top to bottom).

[0036] Figure 13 This is a schematic diagram of the three-dimensional structure of the steel component of the present invention.

[0037] In the diagram: 1. Base; 11. Clip-on plate; 12. Support protrusion; 13. Fastening bolt; 2. Electric slider; 3. C-shaped frame; 31. Positioning block; 32. Positioning rod; 33. Actuating block; 34. Return spring rod; 35. Actuating plate; 36. C-shaped plate; 37. Supporting spring rod; 4. Lifting mechanism; 41. Two-way cylinder; 42. Connecting rod; 43. Sliding block; 44. Hinge rod; 441. Hinge connecting rod; 45. Connecting spring rod; 46. Lifting plate; 5. Spraying mechanism; 51. Connecting... 52. Spray tube; 521. Material storage tank; 522. Sealing plug; 53. Paint pump; 54. Connecting pipe; 55. Spray head; 551. Spray hole; 56. Clamping part; 561. Clamping bracket; 562. Telescopic spring rod; 563. Clamping plate; 564. Airbag; 565. Connecting pipe; 5651. Opening and closing valve; 566. U-shaped pipe; 567. Main pipe; 568. Annular groove; 569. Arc-shaped shielding plate; 6. Steel component; 61. Steel plate; 62. Support block; 63. Support rod. Detailed Implementation

[0038] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways as defined and covered by the claims.

[0039] See Figure 2 as well as Figure 4 A corrosion protection process for steel components is disclosed. This process employs a spraying device, which includes a base 1, an electric slider 2, a C-shaped frame 3, a lifting mechanism 4, and a spraying mechanism 5. The upper surface of the base 1 has a placement groove, and electric sliders 2 are slidably mounted on the upper surface of the base 1 and on both sides of the placement groove. The two vertical sections of the C-shaped frame 3 are respectively mounted on the two electric sliders 2. The lower surface of the horizontal section of the C-shaped frame 3 is equipped with the lifting mechanism 4, and the lower surface of the lifting mechanism 4 is equipped with the spraying mechanism 5.

[0040] Referring to Figure 4 and Figure 5 , the lifting mechanism 4 comprises a bidirectional air cylinder 41, a connecting rod 42, a sliding block 43, a hinged rod 44, a connecting spring rod 45 and a lifting plate 46, wherein the bidirectional air cylinder 41 is installed on the middle part of the lower end surface of the horizontal section of the Z-shaped frame 3 through the air cylinder seat, the lifting plate 46 is arranged between the two vertical sections of the Z-shaped frame 3, the left and right symmetrical connecting spring rods 45 are installed between the lifting plate 46 and the horizontal section of the Z-shaped frame 3, the left and right symmetrical hinged rods 44 are installed between the lifting plate 46 and the horizontal section of the Z-shaped frame 3, the hinged rod 44 is formed by two hinged connecting rods 441 which are rotatably connected through a hinge shaft, the hinged connecting rods 441 are hingedly connected with the sliding blocks 43 at the upper and lower ends, the sliding blocks 43 are slidably arranged on the lower end surface of the horizontal section of the Z-shaped frame 3 and the upper end surface of the lifting plate 46 respectively, and the connecting rods 42 are fixedly connected with the sliding blocks 43 which are close to the bidirectional air cylinder 41 at the upper end of the bidirectional air cylinder 41.

[0041] Referring to Figure 7 , Figure 8 and Figure 9 , the spraying mechanism 5 comprises a connecting shaft 51, a spraying cylinder 52, a paint pump 53, a connecting pipe 54, a spray head 55 and a clamping part 56, wherein a plurality of connecting shafts 51 are uniformly installed on the lower end surface of the lifting plate 46 from left to right through bearings, the spraying cylinders 52 are fixedly connected with the lower end surfaces of the connecting shafts 51, the spraying cylinders 52 are provided with storage grooves 521 in the interiors, the upper end surfaces of the spraying cylinders 52 are provided with feeding ports, the feeding ports are clamped with sealing plugs 522, the lower end surface left side of the inner wall of the spraying cylinder 52 is provided with a placing groove, the paint pump 53 connected with the storage grooves 521 is installed in the placing groove, the connecting pipe 54 is connected with the right end of the paint pump 53 and installed on the left side inner wall of the spraying cylinder 52, a plurality of spray heads 55 are uniformly installed on the left side inner wall of the spraying cylinder 52 from top to bottom, the spray heads 55 are throughly connected with the communicating pipes 565, and the clamping parts 56 are installed on the lower end of the spraying cylinder 52.

[0042] Referring to Figure 10 , the right end surface of the spray head 55 is provided as an arc surface, a plurality of spray holes 551 are uniformly arranged on the arc surface in the circumferential direction, the arrangement of the arc surface can increase the spraying range of the spray holes 551, so that there is no spraying dead angle on the supporting rod 63 in the spraying process of the adjacent spray heads 55, and the surface spraying effect of the supporting rod 63 is improved.

[0043] Referring to Figure 5The two ends of the hinge shaft are jointly installed with the L-shaped plate 36, the horizontal section upper end surface of the L-shaped plate 36 is installed with the supporting spring rod 37 between the horizontal section lower end surface of the L-shaped frame 3, the supporting spring rod 37 and the L-shaped plate 36 can increase the stability in the up and down movement of the hinge rod 44, and reduce the possibility of the hinge rod 44 shaking.

[0044] Referring to Figure 6 The left vertical section left end surface of the L-shaped frame 3 is installed with the positioning block 31 below, the rear end surface of the positioning block 31 is provided with the arc-shaped groove, the upper end surface of the base 1 is uniformly and slidably provided with the plurality of positioning rods 32 from front to back, the left end surface of the base 1 is provided with the alignment groove corresponding to the positioning rod 32 one by one, and the lower end of the positioning rod 32 is located inside the positioning groove, the lower end surface of the positioning rod 32 is installed with the push block 33, and the push block 33 and the lower end surface of the alignment groove are installed with the reset spring rod 34.

[0045] Continuously referring to Figure 6 The upper end surface of the push block 33 is jointly clamped with the push plate 35.

[0046] Referring to Figure 13The steel member 6 comprises a steel plate 61, a support block 62 and a support rod 63. The upper end surface of the steel plate 61 is uniformly provided with a plurality of support blocks 62, and the upper end surface of the support block 62 is welded with a support rod 63. In the specific work, the steel member 6 is pushed into the placing groove from the front of the base 1, and the electric sliding block 2 drives the lifting mechanism 4 and the spraying mechanism 5 to move above the support rod 63 through the Z-shaped frame 3. During the movement of the Z-shaped frame 3, the driving plate 35 drives the driving block 33 to move downward, and the driving block 33 moves downward to cooperate with the reset spring rod 34 to drive the positioning rod 32 to move downward, so that the positioning block 31 and the positioning rod 32 do not collide during the movement of the Z-shaped frame 3. The positioning rod 32 corresponds to the support rod 63 one by one. When the Z-shaped frame 3 drives the positioning block 31 to move to the vicinity of the support rod 63 to be sprayed, the driving rod is loosened at this time, the reset spring rod 34 drives the positioning rod 32 to reset through the driving block 33. At this time, the positioning groove cooperates with the positioning rod 32 to position the Z-shaped frame 3, so as to ensure that the spraying cylinder 52 is ready to move above the support rod 63. When the Z-shaped frame 3 moves to the spraying position, the bidirectional air cylinder 41 drives the hinged rod 44 to open through the connecting rod 42 and the adjacent sliding block 43 above, and the hinged rod 44 drives the spraying cylinder 52 to move downward through the connecting spring rod 45 and the lifting plate 46, so that the support rod 63 is located in the spraying cylinder 52. The left and right adjacent two hinged rods 44 and the connecting spring rods 45 cooperate with each other to increase the stability of the lifting plate 46 during lifting, avoid uneven stress of the lifting plate 46 caused by the spraying mechanism 5 below the lifting plate 46, and affect the service life of the lifting plate 46. Then the sealing plug 522 is opened to pour paint into the discharge groove, and then the sealing plug 522 is closed. The existing driving motor drives the connecting shaft 51 to rotate through the belt transmission mode, and then the connecting shaft 51 drives the spraying cylinder 52 to rotate. During the rotation of the spraying cylinder 52, the paint pump 53 drives the nozzle 55 to cooperate with the connecting pipe 54 to spray paint on the surface of the support rod 63. After the spraying of the support rod 63 is completed, the worker presses the driving plate 35 downward to drive the positioning rod 32 to move downward through the reset spring rod 34 and the driving block 33. At this time, the electric sliding block 2 drives the lifting mechanism 4 and the spraying mechanism 5 to return to the starting position through the Z-shaped frame 3.

[0047] Referring to Figure 7 and Figure 12The clamping part 56 comprises a clamping support 561, a telescopic spring rod 562, a clamping plate 563, an air bag 564, a communication pipe 565, a U-shaped pipe 566 and a main pipe 567, wherein the lower end surface of the spraying cylinder 52 is provided with the annular clamping support 561 through a bearing, the clamping support 561 is internally provided with an annular groove 568, the annular groove 568 is internally provided with left-right symmetrical clamping plates 563, the clamping plates 563 are provided with front-rear symmetrical telescopic spring rods 562 between the opposite surfaces and the inner wall of the annular groove 568, the annular groove 568 is internally provided with the air bags 564 between the front and rear telescopic spring rods 562, the clamping support 561 is provided with left-right symmetrical communication pipes 565 on the upper end surface, the U-shaped pipes 566 are jointly clamped between the same clamping support 561, and the main pipes 567 are jointly connected between the U-shaped pipes 566. When the spraying cylinder 52 moves to the outside of the supporting rod 63, the existing air pump pumps air into the air bags 564 through the communication pipes 565 and the U-shaped pipes 566, the air bags 564 are expanded in the process, the clamping plates 563 are driven and fixed on the supporting block 62, and then the clamping plates 563 and the clamping supports 561 are matched to ensure the stability of the spraying cylinder 52 in the rotating process, so as to avoid the possibility of shaking of the spraying cylinder 52 in the rotating process, and the telescopic spring rods 562 reset the clamping plates 563.

[0048] With reference to Figure 12 The upper end surface of the clamping plate 563 is provided with an arc-shaped shielding plate 569, which can shield the excess paint in the spraying process, so as to avoid the excess paint from falling to the outside of the spraying cylinder 52 and affecting the environmental health.

[0049] With reference to Figure 11 The upper end of the communication pipe 565 is provided with an opening and closing valve 5651 matched with the U-shaped pipe 566, when the U-shaped pipe 566 is clamped on the communication pipe 565, the opening and closing valve 5651 is opened at this time, the main pipe 567 can pump air into the communication pipe 565 through the U-shaped pipe 566, when the U-shaped pipe 566 leaves the communication pipe 565, the opening and closing valve 5651 is closed at this time, the air in the air bag 564 will not leak through the communication pipe 565, so the opening and closing valve 5651 can ensure that the communication pipe 565 is opened and closed with the clamping and leaving of the U-shaped pipe 566.

[0050] With reference to Figure 3The upper end face of the base 1 is provided with front and rear symmetrical L-shaped clamping plates 11, the left and right sides of the clamping plates 11 are provided with support protrusions 12 in contact with the upper end face of the base 1, and the support protrusions 12 are screwed with fastening bolts 13 matched with the base 1. When the steel member 6 moves to the inside of the placing groove, the clamping plates 11 are clamped on the front and rear sides of the steel plate 61 respectively, so that the support protrusions 12 are placed on the base 1, and then the fastening bolts 13 are screwed on the support protrusions 12 and the base 1. The clamping plates 11 can limit the vertical and horizontal direction of the steel member 6, reducing the possibility of displacement of the steel member 6 during the spraying process of the support rod 63.

[0051] Referring to Figure 1 In the process of corrosion prevention processing of the steel member by using the spraying device, the following steps are included: first step, placing treatment: the steel member 6 is pushed from the front of the base 1 into the inside of the placing groove.

[0052] Second step, moving treatment: the bidirectional cylinder 41 is started to drive the hinged rod 44 to open through the cooperation of the connecting rod 42 and the sliding block 43, at this time the hinged rod 44 drives the spraying cylinder 52 to move downward through the cooperation of the connecting spring rod 45 and the lifting plate 46, so that the support rod 63 is located in the inside of the spraying cylinder 52.

[0053] Third step, spraying treatment: the existing driving motor drives the connecting shaft 51 to rotate through the belt transmission mode, and then the connecting shaft 51 drives the spraying cylinder 52 to rotate, and the paint pump 53 is started to cooperate with the nozzle 55 to spray paint on the surface of the support rod 63 through the connecting pipe 54 during the rotation of the spraying cylinder 52.

[0054] Fourth step, overall spraying: the electric sliding block 2 is started to drive the spraying mechanism 5 to spray a plurality of support rods 63 through the cooperation of the U-shaped frame 3 and the lifting mechanism 4.

[0055] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A steel member corrosion prevention processing technology, which adopts a spraying device, the spraying device comprising a base (1), an electric sliding block (2), a U-shaped frame (3), a lifting mechanism (4) and a spraying mechanism (5), characterized in that: The upper end face of the base (1) is provided with a placing groove, and the upper end face of the base (1) and located on the left and right sides of the placing groove is slidably provided with an electric sliding block (2), the two vertical sections of the L-shaped frame (3) are respectively installed on the two electric sliding blocks (2), the lower end face of the horizontal section of the L-shaped frame (3) is installed with a lifting mechanism (4), and the lower end face of the lifting mechanism (4) is installed with a spraying mechanism (5); wherein: The lifting mechanism (4) comprises a bidirectional air cylinder (41), a connecting rod (42), a sliding block (43), a hinged rod (44), a connecting spring rod (45) and a lifting plate (46), wherein the middle part of the lower end face of the horizontal section of the L-shaped frame (3) is installed with the bidirectional air cylinder (41) through the air cylinder seat, the lifting plate (46) is arranged between the two vertical sections of the L-shaped frame (3), the left-right symmetrical connecting spring rods (45) are installed between the lifting plate (46) and the horizontal section of the L-shaped frame (3), the left-right symmetrical hinged rods (44) are installed between the lifting plate (46) and the horizontal section of the L-shaped frame (3), the hinged rod (44) is formed by two hinged connecting rods (441) which are rotatably connected through a hinge shaft, the upper and lower ends of the hinged connecting rod (441) are hingedly connected with the sliding blocks (43), and the upper and lower sliding blocks (43) are slidably arranged on the lower end face of the horizontal section of the L-shaped frame (3) and the upper end face of the lifting plate (46) respectively, and the left and right two telescopic ends of the bidirectional air cylinder (41) are respectively installed with the connecting rods (42), and the ends away from the bidirectional air cylinder (41) of the connecting rods (42) are respectively fixedly connected with the sliding blocks (43) close to the bidirectional air cylinder (41) above; The spraying mechanism (5) comprises a connecting shaft (51), a spraying cylinder (52), a paint pump (53), a connecting pipe (54), a spray head (55) and a clamping part (56), wherein a plurality of connecting shafts (51) are uniformly installed on the lower end face of the lifting plate (46) from left to right through bearings, the lower end face of the connecting shaft (51) is fixedly connected with the spraying cylinder (52), the inside of the spraying cylinder (52) is provided with a storage groove (521), the upper end face of the spraying cylinder (52) is provided with a feeding port, the feeding port is connected with a sealing plug (522), the lower end face of the inner wall of the spraying cylinder (52) is provided with a placing groove on the left side, the inside of the placing groove is installed with a paint pump (53) connected with the storage groove (521), the right end of the paint pump (53) is connected with the connecting pipe (54), the connecting pipe (54) is installed on the left inner wall of the spraying cylinder (52), a plurality of spray heads (55) are uniformly installed on the left inner wall of the spraying cylinder (52) from top to bottom, the spray head (55) is connected with the communication pipe (565), and the lower end of the spraying cylinder (52) is installed with the clamping part (56). The left end face of the vertical section of the left side of the frame (3) is provided with a positioning block (31) below, and the rear end face of the positioning block (31) is provided with an arc-shaped groove; a plurality of positioning rods (32) are uniformly and slidably arranged on the upper end face of the base (1) from front to back; the left end face of the base (1) is provided with a plurality of alignment grooves corresponding to the positioning rods (32), and the lower end of the positioning rod (32) is located in the positioning groove; a push block (33) is arranged on the lower end face of the positioning rod (32); and a reset spring rod (34) is arranged between the push block (33) and the lower end face of the alignment groove; the positioning rod (32) corresponds to the supporting rod one by one. In the process of anticorrosion processing of the steel member by using the spraying device, the following steps are included: First step, placing treatment: the steel member is pushed into the placing groove from the front of the base (1); Second step, moving treatment: the spraying cylinder (52) is driven to move downward by the lifting mechanism (4), so that the supporting rod is located in the spraying cylinder (52); Third step, spraying treatment: the existing driving motor drives the connecting shaft (51) to rotate by belt transmission, and then the connecting shaft (51) drives the spraying cylinder (52) to rotate; in the rotating process of the spraying cylinder (52), the paint pump (53) is started to cooperate with the nozzle (55) through the connecting pipe (54) to spray paint on the surface of the supporting rod; Fourth step, overall spraying: the electric sliding block (2) is started to cooperate with the lifting mechanism (4) through the frame (3) to drive the spraying mechanism (5) to spray the plurality of supporting rods.

2. The steel member corrosion prevention processing method according to claim 1, characterized by: The clamping part (56) includes a clamping support (561), a telescopic spring rod (562), a clamping plate (563), an air bag (564), a communication pipe (565), a U-shaped pipe (566) and a main pipe (567), wherein the lower end face of the spraying cylinder (52) is provided with a clamping support (561) of annular structure through a bearing, an annular groove (568) is formed in the clamping support (561), left and right symmetrical clamping plates (563) are arranged in the annular groove (568), front and back symmetrical telescopic spring rods (562) are arranged between the clamping plates (563) and the inner wall of the annular groove (568), air bags (564) are arranged between the two telescopic spring rods (562) in the annular groove (568), left and right symmetrical communication pipes (565) are arranged on the upper end face of the clamping support (561), U-shaped pipes (566) are jointly clamped between the same clamping supports (561), and the main pipes (567) are jointly connected between the U-shaped pipes (566).

3. The steel member corrosion prevention processing method according to claim 1, characterized by: The upper end face of the base (1) is provided with front and back symmetrical L-shaped clamping plates (11), and the left and right sides of the clamping plates (11) are provided with supporting protrusions (12) in contact with the upper end face of the base (1); the supporting protrusions (12) are screwed with fastening bolts (13) matched with the base (1).

4. The steel member corrosion prevention processing method according to claim 1, characterized by: The upper end of the communication pipe (565) is provided with an opening and closing valve (5651) matched with the U-shaped pipe (566).

5. The steel member corrosion prevention processing method according to claim 1, characterized by: The upper end face of the push block (33) is jointly clamped with a push plate (35).

6. The steel member corrosion prevention processing method according to claim 2, characterized by: The upper end face of the clamping plate (563) is provided with an arc-shaped shielding plate (569).

7. The steel member corrosion prevention processing method according to claim 1, characterized by: The right end surface of the spray head (55) is provided with an arc surface, and a plurality of spray holes (551) are uniformly arranged on the arc surface.

8. The steel member corrosion prevention processing method according to claim 1, characterized by: The two ends of the hinge shaft are jointly provided with a U-shaped plate (36), and a supporting spring rod (37) is arranged between the upper end surface of the horizontal section of the U-shaped plate (36) and the lower end surface of the horizontal section of the U-shaped frame (3).

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