Spraying equipment for steel structure prefabricated part

Abstract

The invention relates to the technical field of spraying equipment, in particular to steel structure prefabricated part spraying equipment. According to the technical scheme, the device comprises two lower rotating shafts rotationally connected to the inner wall of a spraying operation bin, extension rods are fixedly installed on the outer walls of the lower rotating shafts, the outer walls of the extension rods are rotationally connected with lateral rolling wheels making contact with a steel structure, and a spraying operation frame is connected into the spraying operation bin in an up-down sliding mode. The two extension rods in one set are extruded by a steel structure to rotate, the extension rods drive the sliding plate to move and adjust the position of the sliding plate through the lower rotating shaft and the transmission piece, in the sliding process of the sliding plate, the sliding plate pokes a poking piece of the poking piece type throttling valve through the elastic strip, and therefore the poking piece type throttling valve is closed; and meanwhile, the number and the positions of the spray heads are dynamically adjusted through the inclination angles of the extension rods in one set, and the spraying device is suitable for the large-size and special-shaped steel structure.

Description

Technical Field

[0001] This invention relates to the field of spraying equipment technology, and in particular to a spraying equipment for precast steel structures. Background Technology

[0002] Spraying precast steel structures refers to the process of applying one or more layers of coating to the surface of precast steel structures to achieve purposes such as corrosion prevention and aesthetic enhancement. Epoxy micaceous iron oxide intermediate paint can be used to enhance coating thickness and adhesion. Topcoat options are selected based on requirements, such as fluorocarbon paint or chlorinated rubber paint. Each coating layer must be allowed to fully dry before application. During spraying, the nozzle should be approximately 100mm away from the work surface, kept perpendicular and parallel to the surface, and moved at a uniform speed.

[0003] The patent document with publication number CN119259331A proposes an all-round automatic spraying device for steel structures. Multiple spray heads arranged in a semi-circular configuration can greatly improve painting efficiency. By controlling the motor to drive the sliding rod to rotate along the grooved rail, the device ensures stable and reliable drive rotation while achieving circumferential spraying of the steel parts without dead angles. More importantly, it eliminates the need to hoist the steel parts into the grooved rail. Instead, it can be directly sprayed after being supported at any bottom of the steel parts, which is very convenient. It can also spray the sides and top surfaces of the supported parts, and even the bottom surfaces that are not in contact with the supports. This not only greatly saves manpower and materials, but also improves spraying efficiency and the comprehensiveness of the paint application.

[0004] However, due to the diverse shapes of precast steel structures, multiple nozzles are still used for spraying steel structures with narrow cross sections. As a result, some of the paint sprayed by the nozzles cannot come into contact with the steel structure. Summary of the Invention

[0005] The purpose of this invention is to address the problems existing in the background art by proposing a spraying equipment for precast steel structures.

[0006] The technical solution of the present invention: A steel structure precast component spraying equipment, comprising a spraying operation chamber, wherein a conveyor belt for transporting steel structures is provided on both the front and rear sides of the spraying operation chamber, and inlets and outlets are provided on the front and rear side walls of the spraying operation chamber, characterized in that it further comprises:

[0007] The range adjustment mechanism includes two lower rotating shafts rotatably connected to the inner wall of the spraying chamber. An extension rod is fixedly installed on the outer wall of the lower rotating shaft. A lateral roller that contacts the steel structure is rotatably connected to the outer wall of the extension rod. A spraying frame is slidably connected up and down inside the spraying chamber. Multiple spray heads are fixedly installed on the side of the spraying frame facing the steel structure. A paddle-type throttle valve is fixedly installed on the spray head. A sliding plate is slidably connected to the outer wall of the spraying frame. An elastic strip is elastically connected to the side of the sliding plate facing the paddle-type throttle valve. A transmission component is provided between the lower rotating shafts and the sliding plate.

[0008] The flow mechanism includes a first hose connected to the nozzle, a flow valve fixedly installed on the first hose, the bottom of the flow valve being connected to a transmission component, a support roller rotatably connected to the inner wall of the spraying chamber, a gap in the middle of the support roller to avoid the nozzle, and a spraying mechanism being provided inside the spraying chamber.

[0009] Optionally, multiple extension rods are provided, with two extension rods forming a group. The two extension rods in a group are symmetrically and obliquely arranged inside the spraying operation chamber. Multiple groups of extension rods are distributed in a straight line at equal intervals along the spraying operation chamber. The lateral rollers are in contact with the steel structure, and a torque spring is elastically connected between the bottom of the lower rotating shaft and the spraying operation chamber.

[0010] Optionally, a torque spring is elastically connected between the elastic strip and the slide plate, the lever of the paddle-type throttle valve is located on the moving path of the elastic strip, and the elastic force of the torque spring between the elastic strip and the slide plate is greater than the resistance to the rotation of the paddle of the paddle-type throttle valve.

[0011] Optionally, the transmission component includes a small gear rotatably connected to the side of the spraying frame, an upper rotating shaft fixedly installed at the bottom of the small gear, the outer wall of the upper rotating shaft slidingly connected to the lower rotating shaft, a guide strip fixedly installed at the arc surface of the upper rotating shaft, an intermediate gear meshing with the outer wall of the small gear, a large gear coaxially connected to the top of the intermediate gear, and a sliding plate meshing with the outer wall of the large gear.

[0012] Optionally, the spraying frame is provided with a guide groove for the sliding plate to slide. The sliding plate has a Z-shaped structure and has two horizontal parts, which are located on the upper and lower sides of the spraying frame, respectively.

[0013] Optionally, a paint spraying chamber is fixedly installed on the top of the spraying operation chamber, and a second hose is fixedly installed between the bottom of the paint spraying chamber and the flow valve.

[0014] Optionally, an extension column is fixedly installed at the bottom of the flow valve, and the bottom of the extension column is fixedly installed at the center of the large gear, with the extension column perpendicular to the axis of the large gear.

[0015] Optionally, the spraying mechanism includes two inclined rods rotatably connected inside the spraying operation chamber, with an upper roller rotatably connected between the two inclined rods. The upper roller is parallel to the support roller, and the bottom of the upper roller contacts the precast steel structure component.

[0016] Optionally, a hydraulic support frame is fixedly installed on the top inner wall of the spraying operation chamber, a height bracket is fixedly installed on the bottom of the hydraulic support frame, a top plate is fixedly installed on the bottom of the height bracket, the top of the upper roller contacts the top plate, and the bottom of the height bracket is fixedly connected to the spraying operation frame.

[0017] Optionally, the inner wall of the top plate is provided with a racetrack-shaped groove, and a track is slidably connected in the groove, with the bottom of the track contacting the upper roller.

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

[0019] 1. This invention utilizes the rotation generated by the compression of two extension rods within a set by the steel structure. The extension rods drive the slide plate to move via a lower rotating shaft and transmission components, adjusting the position of the slide plate. During the sliding process, the slide plate uses an elastic strip to actuate the paddle of a paddle-type throttle valve, thereby closing the paddle-type throttle valve to shut off excess nozzles that are misaligned with the steel structure, avoiding waste. At the same time, the tilt angle of the extension rods within the set is used to dynamically adjust the number and position of the shut-off nozzles to adapt to large-volume steel structures with irregular shapes.

[0020] 2. In this invention, during the rotation of the large gear driving the sliding plate, the sliding plate moves and uses an elastic strip to close the paddle-type throttle valve. When more nozzles are open, the paint flow at the flow valve is high; when fewer nozzles are open, the paint flow at the flow valve is low. The paint flow at the flow valve is adjusted according to the number of nozzles open to avoid a situation where, with a constant total flow, the number of effective paint nozzles decreases, causing a sharp increase in the medium velocity per nozzle. This leads to increased pressure in the pipeline and spray gun, resulting in overspray, drips, uneven paint mist dispersion, and inconsistent coating thickness.

[0021] 3. In this invention, because the paint spraying nozzles emit paint in a fan shape, when the nozzles are too close to the steel structure, there will be gaps between the paint sprayed by adjacent nozzles, resulting in incomplete coverage of the steel structure. Therefore, the upper rollers are lifted by the steel structure, which in turn lifts the top plate. The top plate causes the height support to move upward, and the hydraulic support frame provides auxiliary lifting to prevent excessive pressure from the upper rollers on the steel structure. Simultaneously, the upward movement of the height support drives the spraying frame upward, adjusting the distance between the nozzles and the steel structure. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a cross-sectional view of the spraying operation chamber structure;

[0024] Figure 3 Schematic diagram of the supporting roller structure;

[0025] Figure 4 for Figure 3 Enlarged schematic diagram of the A-part slide plate structure;

[0026] Figure 5 for Figure 3 Enlarged schematic diagram of the nozzle structure in section B;

[0027] Figure 6 This is a schematic diagram of the extension rod structure;

[0028] Figure 7 This is a schematic diagram of the upper roller structure;

[0029] Figure 8 This is a schematic diagram of the right-side sectional view of the top slab structure.

[0030] Reference numerals: 1. Spraying operation chamber; 2. Assembly line frame; 3. Inlet / outlet; 4. Support roller; 5. Range adjustment mechanism; 51. Extension rod; 52. Side roller; 53. Lower rotating shaft; 54. Upper rotating shaft; 55. Small gear; 56. Intermediate gear; 57. Large gear; 58. Slide plate; 59. Spraying operation frame; 510. Spray nozzle; 511. Paddle-type throttle valve; 512. Elastic strip; 6. Flow mechanism; 61. Flow valve; 62. First hose; 63. Extension column; 64. Second hose; 65. Paint spray chamber; 7. Spraying mechanism; 71. Inclined rod; 72. Upper roller; 73. Top plate; 74. Track; 75. Height support; 76. Hydraulic support frame. Detailed Implementation

[0031] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] The components of the embodiments of the invention described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0033] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] Example: A steel structure precast component spraying equipment, such as Figure 1 As shown, it includes a spraying operation chamber 1, and a conveyor steel structure assembly line 2 is provided on both the front and rear sides of the spraying operation chamber 1. Entrances and exits 3 are opened on the front and rear side walls of the spraying operation chamber 1.

[0037] like Figures 2 to 6 As shown, the spraying operation chamber 1 is equipped with a range adjustment mechanism 5. The range adjustment mechanism 5 includes a spraying operation frame 59 that is slidably connected up and down inside the spraying operation chamber 1. Multiple nozzles 510 are fixedly installed on the side of the spraying operation frame 59 facing the steel structure. The steel structure prefabricated parts are sprayed through the nozzles 510. The inner wall of the spraying operation chamber 1 is rotatably connected to a support roller 4. There is a gap in the middle of the support roller 4 to avoid the nozzles 510. The spraying operation chamber 1 is equipped with a spraying mechanism 7.

[0038] The inner wall of the spraying operation chamber 1 is rotatably connected to a lower rotating shaft 53. An extension rod 51 is fixedly installed on the outer wall of the lower rotating shaft 53. A lateral roller 52 that contacts the steel structure is rotatably connected to the outer wall of the extension rod 51. Multiple extension rods 51 are provided, with two extension rods 51 forming a group. The two extension rods 51 in a group are symmetrically and obliquely arranged inside the spraying operation chamber 1. Multiple groups of extension rods 51 are distributed in a straight line at equal intervals along the spraying operation chamber 1. A torque spring is elastically connected between the bottom of the lower rotating shaft 53 and the spraying operation chamber 1.

[0039] The steel structure moves to the extension rod 51, and the steel structure uses the lateral roller 52 to drive the extension rod 51 to rotate, thereby causing the lower rotating shaft 53 to rotate. Multiple sets of extension rods 51 work together to guide and center the lightweight steel structure prefabricated component.

[0040] A paddle-type throttle valve 511 is fixedly installed on the nozzle 510. A slide plate 58 is slidably connected to the outer wall of the spraying frame 59. An elastic strip 512 is elastically connected to the side of the slide plate 58 facing the paddle-type throttle valve 511. A transmission component is provided between the lower rotating shaft 53 and the slide plate 58. The transmission component includes a small gear 55 rotatably connected to the side of the spraying frame 59. An upper rotating shaft 54 ​​is fixedly installed at the bottom of the small gear 55. The outer wall of the upper rotating shaft 54 ​​is slidably connected to the lower rotating shaft 53. A guide strip is fixedly installed on the arc surface of the upper rotating shaft 54. An intermediate gear 56 is meshed with the outer wall of the small gear 55. A large gear 57 is coaxially connected to the top of the intermediate gear 56. A slide plate 58 is meshed with the outer wall of the large gear 57.

[0041] The extension rod 51 rotates and drives the upper shaft 54 ​​and the pinion 55 to rotate using the lower shaft 53. The pinion 55 drives the intermediate gear 56 and the large gear 57 to rotate. The rotation of the large gear 57 causes the slide plate 58 to move. During the movement, the slide plate 58 uses the elastic strip 512 to paddle the paddle of the paddle-type throttle valve 511, thereby closing the paddle-type throttle valve 511 and thus closing part of the nozzles 510.

[0042] A torque spring is elastically connected between the elastic strip 512 and the slide plate 58. The lever of the paddle-type throttle valve 511 is located on the moving path of the elastic strip 512. The elastic force of the torque spring between the elastic strip 512 and the slide plate 58 is greater than the resistance to the rotation of the paddle of the paddle-type throttle valve 511, thus preventing the torque spring between the elastic strip 512 and the slide plate 58 from failing to drive the paddle-type throttle valve 511 to rotate. The spraying frame 59 is provided with a guide groove for the sliding of the slide plate 58. The slide plate 58 adopts a Z-shaped structure and has two horizontal parts, which are located on the upper and lower sides of the spraying frame 59, respectively.

[0043] When the precast steel structure component is large and irregularly shaped, the guiding capacity of the extension rod 51 and the lateral roller 52 is limited. By utilizing the tilt angle of the extension rod 51 within a set, the number and position of the shut-off nozzles 510 are dynamically adjusted to avoid misalignment between the paint sprayed from the nozzles 510 and the precast steel structure component.

[0044] This invention utilizes the rotation of two extension rods 51 within a set, which are compressed by the steel structure. The extension rods 51 drive the slide plate 58 to move via the lower rotating shaft 53 and the transmission component, adjusting the position of the slide plate 58. During the sliding process of the slide plate 58, the slide plate 58 uses the elastic strip 512 to actuate the paddle of the paddle-type throttle valve 511, thereby closing the paddle-type throttle valve 511 and shutting down the excess nozzles 510 that are misaligned with the steel structure, thus avoiding waste. At the same time, the tilt angle of the extension rods 51 within the set is used to dynamically adjust the number and position of the shut-off nozzles 510 to adapt to large-volume steel structures with irregular shapes.

[0045] like Figures 3 to 6 As shown, a flow mechanism 6 is provided on the spraying frame 59. The flow mechanism 6 includes a first hose 62 that is connected to the nozzle 510. A flow valve 61 is fixedly installed on the first hose 62. The amount of paint flowing from the first hose 62 to the nozzle 510 is adjusted by the flow valve 61.

[0046] An extension column 63 is fixedly installed at the bottom of the flow valve 61. The bottom of the extension column 63 is fixedly installed at the center of the large gear 57, and the extension column 63 is perpendicular to the axis of the large gear 57.

[0047] During the rotation of the large gear 57, the large gear 57 drives the flow valve 61 to rotate using the extension column 63, thereby changing the paint flow rate at the flow valve 61. When the nozzle 510 is open more, the paint flow rate at the flow valve 61 is greater, and when the nozzle 510 is open less, the paint flow rate at the flow valve 61 is less.

[0048] A paint spraying chamber 65 is fixedly installed on the top of the spraying chamber 1. A second hose 64 is fixedly installed between the bottom of the paint spraying chamber 65 and the flow valve 61. The paint in the paint spraying chamber 65 is sprayed out from the nozzle 510 through the second hose 64, the flow valve 61, and then through the first hose 62.

[0049] In this invention, during the rotation of the large gear 57 driving the sliding plate 58 to slide, the movement of the sliding plate 58 utilizes the elastic strip 512 to close the paddle-type throttle valve 511. When more nozzles 510 are open, the paint flow at the flow valve 61 is high; when fewer nozzles 510 are open, the paint flow at the flow valve 61 is low. The paint flow at the flow valve 61 is adjusted according to the number of nozzles 510 that are open to avoid a decrease in the number of effective paint nozzles when the total flow remains constant. This would cause a sharp increase in the medium velocity per nozzle, leading to increased pressure in the pipeline and spray gun, resulting in paint overspray, drips, uneven paint mist dispersion, and inconsistent coating thickness.

[0050] like Figure 3 , Figure 7 and Figure 8As shown, the spraying operation chamber 1 is equipped with a spraying mechanism 7. The spraying mechanism 7 includes two inclined rods 71 ​​rotatably connected inside the spraying operation chamber 1. An upper roller 72 is rotatably connected between the two inclined rods 71. The upper roller 72 is parallel to the support roller 4. The bottom of the upper roller 72 is in contact with the precast steel structure component.

[0051] A hydraulic support frame 76 is fixedly installed on the top inner wall of the spraying operation chamber 1. A height bracket 75 is fixedly installed on the bottom of the hydraulic support frame 76. A top plate 73 is fixedly installed on the bottom of the height bracket 75. The top of the upper roller 72 contacts the top plate 73. The bottom of the height bracket 75 is fixedly connected to the spraying operation frame 59.

[0052] The steel structure lifts the upper roller 72, which in turn lifts the top plate 73. The top plate 73 causes the height support 75 to move upward, and the hydraulic support frame 76 assists in the upward movement, preventing excessive pressure from the upper roller 72 on the steel structure. Simultaneously, the upward movement of the height support 75 moves the spraying frame 59 upward, adjusting the distance between the spray nozzle 510 and the steel structure. This prevents the spray nozzle 510 from being too close to the steel structure, which would prevent complete coverage of the steel structure when the spray angle is fixed.

[0053] The inner wall of the top plate 73 is provided with a racetrack-shaped groove, and a track 74 is slidably connected in the groove. The bottom of the track 74 contacts the upper roller 72. The contact between the top plate 73 and the track 74 avoids mutual friction between the top plate 73 and the upper roller 72.

[0054] In this invention, since the spray nozzle 510 sprays paint in a fan shape, when the nozzle 510 is too close to the steel structure, the paint sprayed by two adjacent nozzles 510 will have gaps on the steel structure, resulting in incomplete coverage. Therefore, the upper roller 72 is lifted by the steel structure, which in turn lifts the top plate 73. The top plate 73 causes the height support 75 to move upward, and the hydraulic support frame 76 assists in the upward movement, preventing excessive pressure from the upper roller 72 on the steel structure. Simultaneously, the upward movement of the height support 75 drives the spraying frame 59 to move upward, adjusting the distance between the nozzle 510 and the steel structure.

[0055] The above specific embodiments are merely several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A steel structure precast component spraying equipment, comprising a spraying operation chamber (1), wherein a steel structure conveyor belt (2) is provided on both the front and rear sides of the spraying operation chamber (1), and inlets (3) are provided on the front and rear side walls of the spraying operation chamber (1), characterized in that, Also includes: The range adjustment mechanism (5) includes two lower rotating shafts (53) rotatably connected to the inner wall of the spraying operation chamber (1). An extension rod (51) is fixedly installed on the outer wall of the lower rotating shaft (53). A lateral roller (52) in contact with the steel structure is rotatably connected to the outer wall of the extension rod (51). A spraying operation frame (59) is slidably connected up and down inside the spraying operation chamber (1). Multiple nozzles (510) are fixedly installed on the side of the spraying operation frame (59) facing the steel structure. A paddle-type throttle valve (511) is fixedly installed on the nozzle (510). A slide plate (58) is slidably connected to the outer wall of the spraying operation frame (59). An elastic strip (512) is elastically connected to the side of the slide plate (58) facing the paddle-type throttle valve (511). A transmission component is provided between the lower rotating shaft (53) and the slide plate (58). The flow mechanism (6) includes a first hose (62) connected to the nozzle (510), a flow valve (61) fixedly installed on the first hose (62), the bottom of the flow valve (61) being connected to a transmission component, a support roller (4) being rotatably connected to the inner wall of the spraying chamber (1), and a gap for avoiding the nozzle (510) in the middle of the support roller (4), and a spraying mechanism (7) being provided inside the spraying chamber (1).

2. The steel structure precast component spraying equipment according to claim 1, characterized in that: Multiple extension rods (51) are provided, with two extension rods (51) forming a group. The two extension rods (51) in a group are symmetrically and obliquely arranged inside the spraying operation chamber (1). Multiple groups of extension rods (51) are distributed in a straight line at equal intervals along the spraying operation chamber (1). A torque spring is elastically connected between the bottom of the lower rotating shaft (53) and the spraying operation chamber (1).

3. The steel structure precast component spraying equipment according to claim 2, characterized in that: A torque spring is elastically connected between the elastic strip (512) and the slide plate (58). The paddle of the paddle-type throttle valve (511) is located on the moving path of the elastic strip (512). The elastic force of the torque spring between the elastic strip (512) and the slide plate (58) is greater than the resistance of the paddle rotation of the paddle of the paddle-type throttle valve (511).

4. The steel structure precast component spraying equipment according to claim 3, characterized in that: The transmission component includes a small gear (55) rotatably connected to the side of the spraying frame (59). An upper rotating shaft (54) is fixedly installed at the bottom of the small gear (55). The outer wall of the upper rotating shaft (54) is slidably connected to the lower rotating shaft (53). A guide strip is fixedly installed on the arc surface of the upper rotating shaft (54). An intermediate gear (56) is meshed with the outer wall of the small gear (55). A large gear (57) is coaxially connected to the top of the intermediate gear (56). A sliding plate (58) is meshed with the outer wall of the large gear (57).

5. The steel structure precast component spraying equipment according to claim 4, characterized in that: The spraying frame (59) is provided with a guide groove for sliding of the slide plate (58). The slide plate (58) adopts a Z-shaped structure and has two horizontal parts, which are located on the upper and lower sides of the spraying frame (59) respectively.

6. The steel structure precast component spraying equipment according to claim 5, characterized in that: The top of the spraying operation chamber (1) is fixedly installed with a paint spraying chamber (65), and the bottom of the paint spraying chamber (65) is fixedly installed between the flow valve (61) and the second hose (64).

7. A steel structure precast component spraying equipment according to claim 6, characterized in that: An extension column (63) is fixedly installed at the bottom of the flow valve (61). The bottom of the extension column (63) is fixedly installed at the center of the large gear (57). The extension column (63) is perpendicular to the axis of the large gear (57).

8. The steel structure precast component spraying equipment according to claim 7, characterized in that: The spraying mechanism (7) includes two inclined rods (71) rotatably connected inside the spraying operation chamber (1), and an upper roller (72) rotatably connected between the two inclined rods (71). The upper roller (72) is parallel to the support roller (4), and the bottom of the upper roller (72) is in contact with the precast steel structure.

9. A steel structure precast component spraying equipment according to claim 8, characterized in that: A hydraulic support frame (76) is fixedly installed on the top inner wall of the spraying operation chamber (1). A height bracket (75) is fixedly installed at the bottom of the hydraulic support frame (76). A top plate (73) is fixedly installed at the bottom of the height bracket (75). The top of the upper roller (72) contacts the top plate (73). The bottom of the height bracket (75) is fixedly connected to the spraying operation frame (59).

10. A steel structure precast component spraying equipment according to claim 9, characterized in that: The inner wall of the top plate (73) is provided with a racetrack-shaped groove, and a track (74) is slidably connected in the groove. The bottom of the track (74) is in contact with the upper roller (72).

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