Automatic paint spraying device for end face of precast beam

Abstract

The utility model discloses an automatic paint spraying device for the end face of a precast beam. The automatic paint spraying device comprises a movable supporting base, a supporting frame, a paint mixing device, a movable spraying pump station and a control cabinet, the support frame is provided with a vertical track; a transverse rail is arranged on the vertical rail; a movable telescopic paint spraying head is arranged on the transverse track; the paint mixing device comprises a paint bucket, a stirring device and a lifting device; a folding hose is connected between the paint bucket and the movable spraying pump station; the stirring device extends into the paint bucket; the lifting device is connected with the stirring device; the movable spraying pump station and the movable telescopic paint spraying head are connected with a paint passing pipe; a positioning frame is arranged on the movable supporting base; the positioning frame is provided with a positioning sensor; a coordinate establishing module and a central processing unit are arranged in the control cabinet; and an ultrasonic detection head is arranged on the movable telescopic paint spraying head. According to the device and the method, waterproof paint can be automatically sprayed on the end face of the precast beam without consuming too much manpower, the efficiency is high, the paint surface is uniform, the thickness is easy to control, and the human health cannot be harmed.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge construction auxiliary equipment, and in particular relates to an automatic painting device for the end surface of a prefabricated beam. Background Art

[0002] In recent years, my country's infrastructure technology has developed rapidly, among which bridge construction is one of the most proud categories in my country's infrastructure industry. Prefabricated beams are often needed to build viaducts, overpasses and other bridges. Prefabricated beams are prefabricated in factories and then transported to the construction site for installation and fixation according to the design requirements. The use of prefabricated beams to build bridges has the advantages of high erection efficiency and easy unified control of bridge strength and quality. In order to prevent water seepage on the end faces of prefabricated beams, after completing the prestressing and anchor hole grouting steps in the process of making prefabricated beams, polyurethane waterproof paint needs to be sprayed on both ends of the prefabricated beams. Spraying is generally required to be carried out 2 to 3 times, and the paint thickness is about 1.5mm. For a long time, the spraying of waterproof paint on the end faces of prefabricated beams has been manually operated. When spraying, scaffolding is generally built in front of the prefabricated beams, and the staff paints the end faces of the prefabricated beams on the scaffolding. The above-mentioned manual spray painting is inefficient and the thickness of the paint is difficult to control; the spray end face of the prefabricated beam is about 3 meters high and 7.5 meters long, with a large spraying area. Manual spraying consumes a lot of manpower and is difficult to operate; polyurethane waterproof paint has certain toxicity, and inhalation into the human body will affect human health. Utility Model Content

[0003] The purpose of the utility model is to propose an automatic spraying device for the end face of a prefabricated beam to solve the problems of low efficiency, difficult to control the thickness of the paint surface, great difficulty in construction, high labor consumption, and the health of operators during the construction process in the prior art of manually spraying waterproof paint on the end face of a prefabricated beam. The device and method of the utility model can automatically identify the spraying position through the equipment, and can automatically spray waterproof paint on the end face of the prefabricated beam without consuming too much manpower, and with high efficiency, uniform paint surface, easy to control thickness, and no harm to human health.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] An automatic spray painting device for the end face of a prefabricated beam comprises a movable support base, and a support frame, a paint mixing device, a mobile spray pump station and a control cabinet arranged on the movable support base; a vertical track is arranged on the outward side of the support frame; a horizontal track is movably arranged on the vertical track; a movable telescopic spray paint head is arranged on the horizontal track; the paint mixing device comprises a paint bucket, a stirring device and a lifting device; a foldable hose is connected between the paint bucket and the mobile spray pump station, the stirring device extends into the paint bucket; the lifting device is connected to the stirring device and drives the stirring device to move in the vertical direction; the movable support base A track is also provided on the seat; the mobile spray pump station is movably arranged on the track; a paint pipe is connected between the mobile spray pump station and the movable telescopic spray head; a group of positioning track and two groups of symmetrical positioning frames are also provided on the movable support base; the two groups of symmetrical positioning frames can be movably arranged on the positioning track; a positioning sensor is provided on the positioning frame; a control system and a display screen are provided in the control cabinet; the control system includes a coordinate establishment module and a central processing unit; an ultrasonic detection head is provided on the movable telescopic spray head; the positioning sensor and the ultrasonic detection head are both connected to the control system.

[0006] The movable support base is used to support the entire device; the support frame is erected in front of the end of the prefabricated beam for the telescopic paint spray head to move and spray paint; the transverse track is moved vertically on the vertical track by an electric moving mechanism, thereby driving the telescopic paint spray head to move in the vertical direction; the electric moving mechanism can be an electric cylinder, or a track wheel, etc.; when the electric moving mechanism is an electric cylinder, the electric cylinder is arranged on the movable support base, and the push rod of the electric cylinder is connected to the transverse track, and the transverse track is driven to move up and down by the extension and retraction of the electric cylinder push rod; when the telescopic electric moving mechanism is a track wheel, the track wheel is matched and placed The vertical track is provided with a rack, and the track wheel is connected with a hub motor, which drives the track wheel to rotate through the hub motor, and provides up and down power to the horizontal track through the meshing of the track wheel and the rack; the movable telescopic paint spray head is also connected with a corresponding electric moving mechanism, so that the movable telescopic paint spray head can move on the horizontal track; the telescopic spray head is used for spraying paint; the paint bucket is used for waterproof paint; the stirring device is used for mixing the waterproof paint in the paint bucket; the lifting device can drive the stirring device to do reciprocating up and down movement, so that the stirring in the paint bucket is more sufficient. The track is used for the mobile spray pump station to move left and right; the paint pipe is used to pass the waterproof paint from the mobile spray pump station to the movable telescopic spray head; after the positioning frame clamps the lower part of the end face of the prefabricated beam, the width of the lower part of the prefabricated beam can be determined by the positioning sensor, so that the midpoint is used as the origin of the virtual coordinate system; the control system is used to control the various electrical components of the device; the coordinate system establishment module is used to establish a virtual space coordinate system, which uses the midpoint of the distance detected by the positioning sensor as the coordinate origin, the horizontal direction and the vertical direction as the horizontal axis and the longitudinal axis respectively, and the front-to-back direction as the vertical axis; The prefabricated beam end face data detected by the ultrasonic detection head is calculated by the central processing unit and then reflected in the form of coordinates in the virtual space coordinate system, and the coordinates of the spraying area are generated to guide the movable telescopic spray head to move and spray; the device can be powered by an external power supply, equipped with a rechargeable battery, equipped with a generator, etc., as long as it can provide electrical energy; an emergency stop switch is also provided on the control cabinet; the length of the paint pipe and the folding hose is sufficient to support the movement of the movable telescopic spray head; in addition, a transformation mechanism is also provided at the front end of the movable telescopic spray head, and the steering mechanism can be an electric universal joint for adjusting the spraying angle.

[0007] As a further technical improvement, the paint mixing device also includes a stirring support frame; a switch cabinet and a lifting support frame are provided on the stirring support frame; a lead screw is provided in the middle of the lifting support frame; a lifting motor is provided on one side of the stirring support frame, and a stirring motor is provided on the other side; pulleys are provided on the upper ends of the lifting motor and the lead screw; a transmission belt is sleeved and connected between the two groups of pulleys; a lead screw nut sleeve is matched on the lead screw; the lead screw nut sleeve is connected to the stirring motor; the rotor of the stirring motor faces downward and is connected to the stirring device. The stirring support frame is used to support the switch cabinet and the lifting support; the lifting motor drives the lead screw to rotate through the pulley and the transmission belt, so that the lead screw nut sleeve moves in the vertical direction, so that the stirring motor moves in the vertical direction together with the stirring device; the stirring device can be a stirring blade; the switch cabinet is used to control the start and stop of the stirring motor and the lifting motor.

[0008] As a further technical improvement, the lifting support frame is also provided with a guide column; the lead screw nut sleeve is provided with a connecting sleeve; the connecting sleeve is matched with the guide column; one side of the connecting sleeve is connected to the lead screw nut sleeve, and the other side is connected to the stirring motor. After the connecting sleeve matches the guide column, it can ensure that the stirring motor moves up and down more smoothly.

[0009] As a further technical improvement, the mobile spray pump station includes a pumping device and an AGV trolley; the pumping device is arranged on the AGV trolley; the AGV trolley is movably arranged on a track; the inlet of the pumping device is connected to a folding hose, and the outlet of the pumping device is connected to a paint pipe; the AGV trolley is also provided with a hand-push handrail. The pumping device is used to pump waterproof paint into the movable telescopic spray head; when the movable telescopic spray head moves horizontally, the AGV trolley can drive the pumping device to move along the track, so that the movable telescopic spray head can move freely.

[0010] As a further technical improvement, a nylon drag chain trough is provided between the mobile spray pump station and the movable telescopic spray head; the paint tube is arranged in the nylon drag chain trough. The power supply line, signal line and paint tube connected to the movable telescopic spray head are arranged in the nylon drag chain trough, so that the various lines and paint tubes will not be messy when the movable telescopic spray head moves.

[0011] As a further technical improvement, a transverse moving seat is provided on the transverse track; an electric cylinder is provided on the transverse moving seat; a push rod of the electric cylinder is connected to a movable telescopic spray head. The moving seat is connected to an electric moving mechanism and can move on the transverse track; the electric cylinder can control the telescopic movement of the movable telescopic spray head.

[0012] As a further technical improvement, an auxiliary fixing frame is provided on the top of the support frame; a right-angle fixing head is provided at the front end of the auxiliary fixing frame. The right-angle fixing head is mounted on the top and side of the prefabricated beam, and fits the prefabricated beam at a right angle, further playing an auxiliary fixing role, so that the movable support base is not easy to shake.

[0013] As a further technical improvement, the support frame is further provided with a reinforcement support oblique column, which is used to reinforce the movable support base.

[0014] As a further technical improvement, the bottom of the support frame is provided with universal wheels.

[0015] The method for using the above-mentioned automatic spray painting device for the end surface of a prefabricated beam is as follows:

[0016] Positioning: Push the movable support base to the end face of the prefabricated beam to be sprayed; move the positioning frame on the positioning track so that the two sets of positioning sensors contact the left and right sides of the end face of the prefabricated beam respectively; at this time, the two sets of positioning sensors sense each other's positions to obtain the length of the bottom of the end face of the prefabricated beam; at this time, the midpoint of the length detection is positioned as the starting origin;

[0017] Establishing a coordinate system: Taking the above starting point as the coordinate origin, establish a virtual coordinate system in the horizontal, vertical and front-to-back directions; the movable telescopic spray head moves horizontally on the horizontal track; the horizontal track moves vertically on the vertical track, so that the movable telescopic spray head moves horizontally and vertically at the front end of the prefabricated beam; at the same time, the ultrasonic detection head of the movable telescopic spray head emits ultrasonic waves and receives echoes, so as to determine the position, length and distance of the prefabricated beam end face; according to the prefabricated beam end face data detected by the ultrasonic detection head, the central processor establishes the corresponding spraying area on the coordinate system and displays it on the display screen of the control cabinet;

[0018] Spraying: The operator confirms on the display screen that the spraying area is correct, and sets the spraying thickness and the distance between the movable telescopic spray head and the end face of the prefabricated beam, and then pours the corresponding paint and corresponding spraying materials into the paint bucket; after starting the equipment, the stirring motor drives the stirring device to stir the paint and spraying materials in the paint bucket, so that the paint is mixed and kept in a uniform state; then the mobile spray pump station draws the paint from the paint bucket into the movable telescopic spray head through the folding hose and the paint pipe; the movable telescopic spray head moves evenly along the spraying area from the coordinate origin, and sprays the paint, and evenly sprays the paint on the corresponding spraying area to achieve automatic painting; when the spraying area is a recessed area, the electric cylinder is extended and retracted to drive the movable telescopic spray head to move back and forth, ensuring that the movable telescopic spray head and the end face of the prefabricated beam always maintain the set distance to ensure uniform spraying.

[0019] The technical solution of the utility model has the following beneficial effects:

[0020] 1. This utility model patent can establish a corresponding spatial rectangular coordinate system after scanning and detecting the end face of the prefabricated beam, and present the spraying area in the form of spatial coordinates, thereby guiding the movable telescopic spray head to evenly move and spray the end face of the prefabricated beam within the spraying area, which has high work efficiency, saves manpower, ensures the waterproof paint spraying effect, and will not affect human health.

[0021] 2. The utility model can realize the movement of the movable telescopic nozzle in the vertical direction and the horizontal direction through the vertical track and the transverse track, so that the movable telescopic nozzle can evenly spray the end surface of the prefabricated beam.

[0022] 3. The utility model drives the pulley, the transmission belt and the lead screw to rotate in sequence through the lifting motor, which can make the stirring motor move up and down, so that the stirring device can better stir the waterproof paint in the paint bucket and make the composition of the sprayed paint liquid more uniform.

[0023] 4. The AGV trolley of the utility model can drive the material pump device to move left and right with the movable telescopic paint spray head, ensuring that the movable telescopic paint spray head can better complete the painting and reduce the impact of the excessively long pipeline on the painting.

[0024] 5. The utility model uses an auxiliary fixing frame and a right-angle fixing head to further play an auxiliary fixing role, so that the movable support base is not easy to shake. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is the overall structural diagram of this device.

[0026] Figure 2 It is a structural schematic diagram of the support frame of this device.

[0027] Figure 3 It is a structural schematic diagram of the paint mixing device of this device.

[0028] Figure 4 This is a structural diagram of the mobile spray pump station of this device.

[0029] Figure 5 This is a schematic diagram of the structure of the precast beam.

[0030] Figure numerals: 1- movable support base, 2- support frame, 3- paint mixing device, 4- mobile spray pump station, 5- control cabinet, 6- movable telescopic spray head, 7- horizontal track, 8- vertical track, 9- horizontal moving seat, 10- electric cylinder, 11- reinforced support inclined column, 12- nylon drag chain trough, 13- mobile positioning frame, 14- positioning sensor, 15- auxiliary fixing frame, 16- right angle fixing head, 17- paint pipe, 18- folding soft Tube, 19-track, 20-universal wheel, 21-paint bucket, 22-stirring support frame, 23-switch cabinet, 24-lifting support frame, 25-screw, 26-lifting motor, 27-transmission belt, 28-guide column, 29-screw nut sleeve, 30-connecting sleeve, 31-stirring motor, 32-dynamic stirring device, 33-suction pump device, 34-AGV trolley, 35-hand push handrail, 36-precast beam, 37-spraying area. DETAILED DESCRIPTION

[0031] The utility model will be further described below in conjunction with the accompanying drawings.

[0032] Embodiment 1:

[0033] like Figures 1 to 5 As shown, an automatic spray painting device for the end face of a prefabricated beam comprises a movable support base 1, and a support frame 2, a paint mixing device 3, a mobile spray pump station 4 and a control cabinet 5 arranged on the movable support base 1; a vertical track 8 is arranged on the outward side of the support frame 2; a horizontal track 7 is movably arranged on the vertical track 8; a movable telescopic spray paint head 6 is arranged on the horizontal track 7; the paint mixing device 3 comprises a paint bucket 21, a stirring device 32 and a lifting device; a foldable hose 18 is connected between the paint bucket 21 and the mobile spray pump station 4, and the stirring device 32 extends into the paint bucket 21; the lifting device is connected to the stirring device 32 and drives the stirring device 32 to move in the vertical direction; the A track 19 is also provided on the movable support base 1; the mobile spray pump station 4 is movably arranged on the track 19; a paint pipe 17 is connected between the mobile spray pump station 4 and the movable telescopic paint spray head 6; a group of positioning rails and two groups of symmetrical positioning frames 13 are also provided on the movable support base 1; the two groups of symmetrical positioning frames 13 can be movably arranged on the positioning rails; a positioning sensor 14 is provided on the positioning frame 13; a control system and a display screen are provided in the control cabinet 5; the control system includes a coordinate establishment module and a central processing unit; an ultrasonic detection head is provided on the movable telescopic paint spray head 6; the positioning sensor 14 and the ultrasonic detection head are both connected to the control system.

[0034] The paint mixing device 3 also includes a stirring support frame 22; a switch cabinet 23 and a lifting support frame 24 are provided on the stirring support frame 22; a lead screw 25 is provided in the middle of the lifting support frame 24; a lifting motor 26 is provided on one side of the stirring support frame 22, and a stirring motor 31 is provided on the other side; pulleys are provided on the upper ends of the lifting motor 26 and the lead screw 25; a transmission belt 27 is sleeved and connected between the two groups of the pulleys; a lead screw nut sleeve 29 is matched on the lead screw 25; the lead screw nut sleeve 29 is connected to the stirring motor 31; the rotor of the stirring motor 31 faces downward and is connected to the stirring device 32.

[0035] The lifting support frame 24 is also provided with a guide column 28; the screw nut sleeve 29 is provided with a connecting sleeve 30; the connecting sleeve 30 is matched with the guide column 28; one side of the connecting sleeve 30 is connected to the screw nut sleeve 29, and the other side is connected to the stirring motor 31.

[0036] The mobile spray pump station 4 includes a suction pump device 33 and an AGV cart 34; the suction pump device 33 is arranged on the AGV cart 34; the AGV cart 34 is movably arranged on the track 19; the inlet of the suction pump device 33 is connected to the folding hose 18, and the outlet of the suction pump device 33 is connected to the paint pipe 17; the AGV cart 34 is also provided with a hand push handrail 35.

[0037] A nylon drag chain trough 12 is also provided between the mobile spray pump station 4 and the movable telescopic spray head 6 ; the paint pipe 17 is arranged in the nylon drag chain trough 12 .

[0038] A transverse moving seat 9 is provided on the transverse track 7 ; an electric cylinder 10 is provided on the transverse moving seat 9 ; a push rod of the electric cylinder 10 is connected to a movable telescopic paint spray head 6 .

[0039] An auxiliary fixing frame 15 is disposed on the top of the support frame 2 ; a right-angle fixing head 16 is disposed at the front end of the auxiliary fixing frame 15 .

[0040] The method of using the utility model is as follows:

[0041] Positioning: Push the movable support base 1 to the end face of the prefabricated beam 36 to be sprayed; move the positioning frame 13 on the positioning track so that the two sets of positioning sensors 14 contact the left and right sides of the end face of the prefabricated beam 36 respectively; at this time, the two sets of positioning sensors 14 sense each other's positions to obtain the length of the bottom of the end face of the prefabricated beam 36; at this time, the midpoint of the length detection is positioned as the starting origin;

[0042] Establishing a coordinate system: Taking the above-mentioned starting origin as the coordinate origin, establish a virtual coordinate system in the horizontal, vertical and front-to-back directions; the movable telescopic spray head 6 moves horizontally on the horizontal track 7; the horizontal track 7 moves vertically on the vertical track 8, so that the movable telescopic spray head 6 moves horizontally and vertically in front of the end face of the prefabricated beam 36; at the same time, the ultrasonic detector of the movable telescopic spray head 6 emits ultrasonic waves and receives echoes, thereby determining the position, length and distance of the end face of the prefabricated beam 36; according to the end face data of the prefabricated beam 36 detected by the ultrasonic detector, the central processor establishes the corresponding spraying area 37 on the coordinate system and displays it on the display screen of the control cabinet 5;

[0043] Spraying: The operator confirms on the display screen that the spraying area 37 is correct, and sets the spraying thickness and the distance between the movable telescopic spray head 6 and the end face of the prefabricated beam 36, and then pours the corresponding paint and the corresponding spraying materials into the paint bucket 21; after starting the equipment, the stirring motor 31 drives the stirring device 32 to stir the paint and spraying materials in the paint bucket 21, so that the paint is mixed and maintained in a uniform state; then the mobile spray pump station 4 draws the paint from the paint bucket 21 into the movable telescopic spray head 6 through the folding hose 18 and the paint pipe 17; the movable telescopic spray head 6 moves evenly along the spraying area 37 from the coordinate origin, and sprays the paint, and evenly sprays the paint on the corresponding spraying area 37 to achieve automatic painting; when the spraying area 37 is a recessed area, the electric cylinder 10 is telescopic to drive the movable telescopic spray head 6 to move back and forth, ensuring that the movable telescopic spray head 6 and the end face of the prefabricated beam 36 always maintain the set distance, ensuring uniform spraying.

[0044] Embodiment 2:

[0045] The difference between this embodiment and the first embodiment is that the support frame 2 is further provided with a reinforcement support inclined column 11 .

[0046] The method of use of this embodiment is the same as that of embodiment 1.

[0047] Embodiment 3:

[0048] The difference between this embodiment and embodiment 2 is that a universal wheel 20 is provided at the bottom of the support frame 2 .

[0049] The method of use of this embodiment is the same as that of embodiment 1.

[0050] Embodiment 4:

[0051] The difference between this embodiment and the third embodiment is that: the support frame 2 is further provided with a reinforcement support inclined column 11. The bottom of the support frame 2 is provided with a universal wheel 20.

[0052] The method of use of this embodiment is the same as that of embodiment 1.

[0053] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Personnel in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

[0054] In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "inside", "front", "back", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0055] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. An automatic spray painting device for the end surface of a prefabricated beam, characterized in that: The invention comprises a movable support base (1), and a support frame (2), a paint mixing device (3), a mobile spray pump station (4) and a control cabinet (5) arranged on the movable support base (1); a vertical track (8) is arranged on the outward side of the support frame (2); a horizontal track (7) is movably arranged on the vertical track (8); a movable telescopic paint spray head (6) is arranged on the horizontal track (7); the paint mixing device (3) comprises a paint bucket (21), a stirring device (32) and a lifting device; the paint mixing device (3) comprises a paint bucket (21), a stirring device (32) and a lifting device; A foldable hose (18) is connected between the barrel (21) and the mobile spray pump station (4); the stirring device (32) extends into the paint barrel (21); the lifting device is connected to the stirring device (32) and drives the stirring device (32) to move in the vertical direction; a track (19) is also provided on the movable support base (1); the mobile spray pump station (4) is movably arranged on the track (19); a paint pipe (17) is connected between the mobile spray pump station (4) and the movable telescopic spray head (6); A group of positioning rails and two groups of symmetrical positioning frames (13) are also provided on the movable support base (1); the two groups of symmetrical positioning frames (13) are both movably arranged on the positioning rails; and a positioning sensor (14) is provided on the positioning frame (13); The control cabinet (5) is provided with a control system and a display screen; the control system includes a coordinate establishment module and a central processing unit; the movable telescopic spray head (6) is provided with an ultrasonic detection head; the positioning sensor (14) and the ultrasonic detection head are both connected to the control system.

2. The automatic spray painting device for the end surface of a prefabricated beam according to claim 1 is characterized in that: The paint mixing device (3) further comprises a stirring support frame (22); a switch cabinet (23) and a lifting support frame (24) are arranged on the stirring support frame (22); a lead screw (25) is arranged in the middle of the lifting support frame (24); a lifting motor (26) is arranged on one side of the stirring support frame (22), and a stirring motor (31) is arranged on the other side; pulleys are arranged on the upper ends of the lifting motor (26) and the lead screw (25); a transmission belt (27) is sleeved and connected between the two groups of the pulleys; a lead screw nut sleeve (29) is matched with the lead screw (25); the lead screw nut sleeve (29) is connected to the stirring motor (31); the rotor of the stirring motor (31) faces downward and is connected to the stirring device (32).

3. The automatic spray painting device for the end surface of a prefabricated beam according to claim 2 is characterized in that: The lifting support frame (24) is also provided with a guide column (28); the screw nut sleeve (29) is provided with a connecting sleeve (30); the connecting sleeve (30) is matched with the guide column (28); one side of the connecting sleeve (30) is connected to the screw nut sleeve (29), and the other side is connected to the stirring motor (31).

4. The automatic spray painting device for the end surface of a prefabricated beam according to claim 1 is characterized in that: The mobile spray pump station (4) comprises a material extraction pump device (33) and an AGV trolley (34); the material extraction pump device (33) is arranged on the AGV trolley (34); the AGV trolley (34) is movably arranged on a track (19); the inlet of the material extraction pump device (33) is connected to a folding hose (18), and the outlet of the material extraction pump device (33) is connected to a paint pipe (17); the AGV trolley (34) is also provided with a hand-pushing handrail (35).

5. The automatic spray painting device for the end surface of a prefabricated beam according to claim 1 is characterized in that: A nylon drag chain trough (12) is also provided between the mobile spray pump station (4) and the movable telescopic spray head (6); the paint passage pipe (17) is arranged in the nylon drag chain trough (12).

6. The automatic spray painting device for the end surface of a prefabricated beam according to claim 1 is characterized in that: A transverse moving seat (9) is provided on the transverse track (7); an electric cylinder (10) is provided on the transverse moving seat (9); and a push rod of the electric cylinder (10) is connected to a movable telescopic paint spray head (6).

7. The automatic spray painting device for the end surface of a prefabricated beam according to claim 1 is characterized in that: An auxiliary fixing frame (15) is provided on the top of the supporting frame (2); a right-angle fixing head (16) is provided at the front end of the auxiliary fixing frame (15).

8. The automatic spray painting device for the end surface of a prefabricated beam according to claim 1 is characterized in that: The support frame (2) is also provided with a reinforcement support inclined column (11).

9. The automatic spray painting device for the end surface of a prefabricated beam according to claim 1 is characterized in that: The bottom of the support frame (2) is provided with a universal wheel (20).

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