Wall surface spraying device for building construction

Abstract

The invention relates to the technical field of wall surface treatment, and discloses a wall surface spraying device for building construction, which comprises a lifting frame, a primer box and a finish paint box, and further comprises a connecting assembly arranged on the lifting frame and selectively and detachably connected with the primer box or the finish paint box; the spraying assembly is arranged on the top face of the lifting frame in a sliding mode and selectively connected with the primer box or the finish paint box in a penetrating mode. The traction assembly is arranged on the top face of the high building and controls the lifting frame to move up and down. The braking assembly is arranged on the supporting frame and conducts braking operation on the traction wheel. According to the device, the lifting frame can be selectively and fixedly connected with the primer box and the finish paint box conveniently and quickly, and the production cost of the device and the complexity of a control module can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of wall surface treatment, in particular to a wall surface spraying device used in building construction. Background Art

[0002] With the rapid development of the construction industry, there are more and more high-rise buildings in China. In the construction, it is necessary to spray the exterior walls of high-rise buildings. In the spraying process, the surface of the exterior wall needs to be sprayed with primer (the role of primer can enhance adhesion, seal and isolate, prevent rust, prevent mildew and moisture, and save the amount of topcoat) and topcoat (the role of topcoat can achieve decorative effects, protective functions, wear resistance and stain resistance).

[0003] In the prior art, when spraying primer or topcoat on the exterior wall of a high-rise building, the primer box or topcoat box is usually first hoisted on a hanging basket for installation. The hanging basket is provided with a spraying assembly connected to the primer box or topcoat box and a control module for automating the movement of the spraying assembly and the descent of the hanging basket. In the process of the spraying assembly sliding to spray different positions of the exterior wall, in order to ensure the stability of the hanging basket, it is necessary to set an adsorption assembly on the end of the hanging basket facing the wall. By controlling the start and stop of the adsorption assembly, the hanging basket is adsorbed on the wall when it is stopped (the spraying operation is performed at this time), and when the vertical position of the spraying is adjusted, the hanging basket is separated from the wall when it descends.

[0004] In the above operation, it is necessary to use special lifting equipment to lift the primer box or the topcoat box on the hanging basket, which is subject to certain limitations in the installation of the primer box or the topcoat box, reducing the installation efficiency of the primer box or the topcoat box; and it is also necessary to set up an additional adsorption component and a module connected to the control module and controlling the start and stop of the adsorption component, which not only increases the cost of the spraying device, but also increases the complexity of the control module. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the above difficulties and provide a wall spraying device for building construction.

[0006] In order to solve the above technical problems, the present invention provides a technical solution: a wall spraying device for building construction, comprising a lifting frame, a primer box and a topcoat box, and also comprising: A connection component is arranged on the lifting frame and selectively connected to the primer box or the topcoat box in a detachable manner. The lifting frame is sleeved on the primer box or the topcoat box. The connection component includes a connection seat arranged on the inner wall at both ends of the lifting frame. Both ends of the outer wall of the primer box and the topcoat box are provided with a docking seat matched with the connection seat, and a positioning component is provided between the connection seat and the docking seat to fix the two. A spraying assembly is slidably arranged on the top surface of the lifting frame and selectively connected with the primer box or the topcoat box; A traction assembly, wherein the traction assembly comprises a support frame of an inverted L-shaped structure arranged on the top surface of a high-rise building, an inverted U-shaped frame is arranged on the horizontal end surface of the support frame, and a traction wheel is rotatably arranged on the U-shaped frame, a steel wire rope adapted thereto is sleeved in the traction wheel, one end of the steel wire rope is connected to the top surface of the lifting frame through a sling 1, and a counterweight is connected to the other end, a traction rope is arranged at the other end of the counterweight, a pulley for guiding the traction rope is arranged on the ground, and the other end of the traction rope is connected to the bottom surface of the lifting frame through a sling 2; The brake assembly is arranged on the support frame and performs a braking operation on the traction wheel.

[0007] As an improvement, the positioning assembly includes positioning pins arranged at the four corners of the connecting seat and having a rebound function, the docking seat is provided with pin holes for inserting the positioning pins, and the connecting seat is provided with a linkage assembly that enables the four positioning pins to extend synchronously and cooperate with the corresponding pin holes.

[0008] As an improvement, the linkage assembly includes a mounting cavity opened in the connecting seat, and wedge-shaped seats are provided at the opposite ends of the two positioning pins, and matching seats adapted thereto are slidably provided in the mounting cavity at the middle positions of the two wedge-shaped seats; The two mating seats are provided with external threaded rods with opposite threads at the opposite ends, and a threaded barrel that is threadedly connected to the external threaded rods at both ends is rotatable in the installation cavity. The lifting frame is provided with a transmission assembly that makes the threaded barrels at both ends rotate synchronously.

[0009] As an improvement, the transmission assembly includes a worm wheel arranged on a threaded cylinder, a worm screw one meshing with the worm wheel one is rotatably arranged in the installation cavity, two worm screws are each provided with a rotating shaft one extending to the outside of the lifting frame, two rotating shafts are each provided with a pulley, and a transmission belt matching them is wound around the two pulleys.

[0010] As an improvement, a rotating shaft two connected to the traction wheel is rotatably provided on the U-shaped frame, a worm gear two is provided at the end of the U-shaped frame extended by the rotating shaft two, and a worm gear two meshing with the worm gear two is rotatably provided on the end of the U-shaped frame, a brake disc is provided at the second end of the worm gear, and the other end of the brake disc is connected to the output shaft of the motor, and a brake assembly for braking the brake disc is provided on the support frame.

[0011] As an improvement, the brake assembly includes a support seat fixedly mounted on a U-shaped frame and located below the brake disc, and positioning plates for clamping the brake disc are symmetrically hinged on the support seat at both ends of the brake disc, and rocker arms are hinged on the top surfaces of the two positioning plates, and the other ends of the two rocker arms are hinged together on an adjusting seat, and an electric cylinder connected to the adjusting seat is fixedly mounted on the support frame.

[0012] As an improvement, the spraying assembly includes a feed pump arranged on the top surface of the lifting frame, the feed pump is provided with a suction pipe at one end, and a feed pipe of several lengths is provided at the other end, the primer box or the topcoat box is respectively provided with a through pipe connected to the suction pipe, a material storage shell is slidably provided on the top surface of the lifting frame, the material storage shell is provided with a nozzle facing the wall, and the other end of the feed pipe is connected to the material storage shell.

[0013] As an improvement, a base is fixedly provided on the ground corresponding to the pulley, a bearing frame is fixedly provided on the base, and the pulley is rotatably connected to the bearing frame.

[0014] The beneficial effects of the present invention compared with the prior art are: 1. With the selective detachable connection between the lifting frame and the primer box and the topcoat box, the lifting frame can be dropped to the position where it is connected with the primer box and the topcoat box, and then the primer box or the topcoat box can be connected to the lifting frame through the cooperation of the connecting component and the positioning component, so that the primer box or the topcoat box moves with the movement of the lifting frame, thus avoiding the hoisting operation of the primer box or the topcoat box during installation, so that the primer box or the topcoat box can be fixedly installed conveniently and quickly; 2. With the cooperation of the traction wheel, wire rope, sling 1, counterweight, traction rope, pulley and sling 2, the traction wheel can be controlled to rotate during the spraying process, driving the wire rope to move, and then driving the lifting frame to lower and adjust. At this time, the counterweight will rise to operate. Under the action of the pulley, traction rope and sling 2, the lifting frame is always in the position between the tensioned wire rope and traction rope, so that the stability of the lifting frame during the spraying process can be guaranteed without using an adsorption component; 3. With the cooperation of the positioning assembly, linkage assembly and transmission assembly, multiple positioning pins at both ends can be driven to extend synchronously and then cooperate with the corresponding pin holes, so that the docking seat can be fixedly connected to the connecting seat, and the primer box or topcoat box can be conveniently and quickly connected to the lifting frame; 4. With the cooperation of the worm gear 2 and the worm wheel 2 and the action of the counterweight, the rotation speed of the traction wheel can be reduced while the torque of the traction wheel is increased in the process of the worm gear 2 driving the worm wheel 2 to rotate. With the action of the counterweight, the power required for the rotation of the traction wheel can be reduced, thereby improving the efficiency of the control of the rotation of the traction wheel; Under the action of the brake assembly, the brake disc can be effectively positioned when the traction wheel is not rotating, thereby improving the effect of positioning the traction wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The structure of the present invention is schematically shown in FIG. Figure 1 .

[0016] Figure 2 It is a front structural schematic diagram of the present invention.

[0017] Figure 3 This is a schematic diagram of the structure of the lifting frame in the present invention. Figure 1 .

[0018] Figure 4 This is a schematic diagram of the structure of the lifting frame in the present invention. Figure 2 .

[0019] Figure 5 It is a structural schematic diagram of the lifting frame, the primer box and the topcoat box in the present invention.

[0020] Figure 6 It is a structural schematic diagram of the positioning component and the linkage component in the present invention.

[0021] Figure 7 It is a structural schematic diagram of the linkage component and the transmission component in the present invention.

[0022] Figure 8 The structure of the traction assembly in the present invention is shown in FIG. Figure 1 .

[0023] Fig. 9 The structure of the traction assembly in the present invention is shown in FIG. Figure 2 .

[0024] Fig.10 The present invention Fig. 9 Enlarged structural diagram of point A in the middle.

[0025] As shown in the figure: 1. Lifting frame; 111. Support plate; 112. Guide wheel; 2. Connecting assembly; 211. Connecting seat; 212. Docking seat; 3. Positioning assembly; 311. Positioning pin; 312. Pin hole; 4. Spraying assembly; 411. Feeding pump; 412. Suction pipe; 413. Feeding pipe; 414. Through pipe; 415. Storage shell; 416. Nozzle; 5. Traction assembly; 511. Support frame; 512. U-shaped frame; 513. Traction wheel; 514. Wire rope; 515. Lifting sling 1; 516. Counterweight; 517. Traction rope; 518. Pulley; 519. Lifting sling 2; 520. Rotating shaft two; 521, worm gear two; 522, worm gear two; 523, brake disc; 524, motor; 525, base; 526, carrier frame; 6, brake assembly; 611, support seat; 612, positioning plate; 613, rocker arm; 614, adjustment seat; 615, electric cylinder; 7, linkage assembly; 710, mounting cavity; 711, wedge seat; 712, matching seat; 713, external threaded rod; 714, threaded barrel; 8, transmission assembly; 811, worm gear one; 812, worm gear one; 813, rotating shaft one; 814, pulley; 815, transmission belt; 816, handwheel; 9, primer box; 10, topcoat box. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0027] Combined with Figure 1 , Attachment Figure 2 , Attachment Figure 4 , Attachment Figure 5 and attached Figure 8 As shown, a wall spraying device for building construction includes a lifting frame 1, a primer box 9 and a topcoat box 10, a support plate 111 is provided at the end of the lifting frame 1 facing the outer wall, and a guide wheel 112 that contacts the outer wall is rotatably provided on the support plate 111, and also includes: a connecting component 2, which is arranged on the lifting frame 1 and selectively detachably connected with the primer box 9 or the topcoat box 10, the lifting frame 1 is sleeved on the primer box 9 or the topcoat box 10, the connecting component 2 includes a connecting seat 211 arranged on the inner wall at both ends of the lifting frame 1, and both ends of the outer wall of the primer box 9 and the topcoat box 10 are provided with a docking seat 212 that cooperates with the connecting seat 211, the docking seat 212 is arranged at both ends of the connecting seat 211, and a positioning component 3 is provided between the connecting seat 211 and the docking seat 212 to fix the two; a spraying component 4, which is slidably arranged on the top surface of the lifting frame 1 and selectively connected with the primer box 9 or the topcoat box 10; The traction assembly 5 comprises a support frame 511 of an inverted L-shaped structure fixedly arranged on the top surface of the high-rise building, an inverted U-shaped frame 512 is arranged on the horizontal end surface of the support frame 511, and a traction wheel 513 is rotatably arranged on the U-shaped frame 512, a plurality of steel wire ropes 514 adapted thereto are sleeved in the traction wheel 513, one end of the steel wire rope 514 is connected to the top surface of the lifting frame 1 through a sling 515, and the other end is connected to a counterweight block 516, and the other end of the counterweight block 516 is provided with a traction rope 517, which is fixed on the ground. A pulley 518 is provided for guiding the traction rope 517, a base 525 is fixedly provided on the ground corresponding to the pulley 518, a support frame 526 is fixedly provided on the base 525, the pulley 518 is rotatably connected to the support frame 526, and the other end of the traction rope 517 is tensionedly connected to the bottom surface of the lifting frame 1 through a sling 519, the sling 515 and the sling 519 are wire rope slings or chain slings in the prior art; a brake assembly 6 is provided on the support frame 511 and performs a braking operation on the traction wheel 513.

[0028] Through the above structure, when spraying primer or topcoat on the surface of the external wall, first move the primer box 9 or topcoat box 10 to the position corresponding to the lifting frame 1, then inject the primer liquid or topcoat liquid into the primer box 9 or topcoat box 10, then control the traction wheel 513 to rotate, and lower the lifting frame 1 to a position where the primer box 9 or topcoat box 10 can be covered, fix the primer box 9 or topcoat box 10 on the lifting frame 1 through the connecting component 2, and then connect the spraying component 4 with the primer box 9 or topcoat box 10, then control the traction wheel 513 to rotate in the opposite direction, and then drive the lifting frame 1 to rise, and then connect the second sling 519 to the bottom surface of the lifting frame 1, and then connect the end of the traction rope 517 to the second sling 519, and then move the lifting frame 1 upward to the top of the high-rise building, and finally fix the pulley 518 to the ground, and at the same time, make the traction rope 517 in a tensioned state; Under the action of the external automatic control module, the outer wall surface is effectively sprayed. During the entire spraying process, the lifting frame 1 is always located between the tensioned steel wire rope 514 and the traction rope 517, thereby ensuring the stability of the lifting frame 1 without using an adsorption component.

[0029] Combined with Figure 3 and attached Figure 6 As shown, the positioning assembly 3 includes positioning pins 311 provided at the four corners of the connecting seat 211 and having a rebound function, the docking seat 212 is provided with pin holes 312 for the positioning pins 311 to be inserted, and the connecting seat 211 is provided with a linkage assembly 7 for making the four positioning pins 311 extend synchronously and cooperate with the corresponding pin holes 312; The linkage assembly 7 includes a mounting cavity 710 opened in the connecting seat 211, and wedge-shaped seats 711 are provided at opposite ends of the two positioning pins 311. Matching seats 712 adapted to the two wedge-shaped seats 711 are slidably provided in the mounting cavity 710 at the middle positions of the two wedge-shaped seats 711. The two mating seats 712 are provided with external threaded rods 713 with opposite threads at the opposite ends, and a threaded cylinder 714 is rotatably provided in the installation cavity 710 and is threadedly connected to the external threaded rods 713 at both ends. The lifting frame 1 is provided with a transmission assembly 8 that allows the threaded cylinders 714 at both ends to rotate synchronously.

[0030] The working principle of the positioning component 3 is to sleeve the lifting frame 1 on the primer box 9 or the topcoat box 10, and at the same time make its connecting seat 211 extend into the docking seat 212, and drive the threaded cylinder 714 at both ends to rotate synchronously through the transmission component 8. Under the action of the positive and negative thread forces, the two external threaded rods 713 connected to the threaded cylinder 714 are driven to move away from each other, and at the same time drive the matching seats 712 at the upper and lower ends of both ends to move away from each other synchronously, and then respectively cooperate with the corresponding wedge-shaped seats 711, so that the multiple positioning pins 311 at both ends can be driven to extend outward synchronously, so that they cooperate with the corresponding pin holes 312, so that the connecting seat 211 and the docking seat 212 can be conveniently and quickly fixedly connected, so that the primer box 9 or the topcoat box 10 can be conveniently and quickly fixedly connected to the lifting frame 1.

[0031] Combined with Figure 3 and attached Figure 7 As shown, the transmission assembly 8 includes a worm wheel 811 arranged on a threaded cylinder 714, a worm 812 meshing with the worm wheel 811 is rotatably arranged in the installation cavity 710, two worm gears 812 are each provided with a rotating shaft 813 extending to the outside of the lifting frame 1, two rotating shafts 813 are each provided with a pulley 814, and a transmission belt 815 compatible with them is commonly wound around the two pulleys 814, and a handwheel 816 is provided at the end of any rotating shaft 813 extending out of the pulley 814.

[0032] The working principle of the transmission assembly 8 is that the hand wheel 816 is rotated to drive a rotating shaft 813 to rotate, and under the action of the pulleys 814 and the transmission belt 815 at both ends, the rotating shaft 813 at both ends is driven to rotate synchronously, and then the worm 812 at both ends is driven to rotate synchronously, and then the worm wheel 811 at both ends is driven to rotate synchronously, and finally the threaded tube 714 at both ends is driven to rotate synchronously.

[0033] Combined with Figure 8 , Attachment Fig. 9 and attached Fig.10 As shown, a second rotating shaft 520 connected to the traction wheel 513 is rotatably provided on the U-shaped frame 512, a second worm gear 521 is provided at the end of the second rotating shaft 520 extending the U-shaped frame 512, and a second worm 522 meshing with the second worm gear 521 is rotatably provided on the end of the U-shaped frame 512, a brake disc 523 is provided at the end of the second worm 522, and the other end of the brake disc 523 is connected to the output shaft of the motor 524, and a brake assembly 6 for braking the brake disc 523 is provided on the support frame 511; The brake assembly 6 includes a support seat 611 fixedly set on a U-shaped frame 512 and located below the brake disc 523. The support seat 611 is symmetrically hinged with positioning discs 612 at both ends of the brake disc 523 to clamp it. The opposite ends of the two positioning discs 612 are respectively provided with arc surfaces that match the end faces of the brake disc 523. The top surfaces of the two positioning discs 612 are hinged with rocker arms 613. The other ends of the two rocker arms 613 are hinged together on an adjustment seat 614. An electric cylinder 615 connected to the adjustment seat 614 is fixedly set on the support frame 511, and the movable end of the electric cylinder 615 is connected to the adjustment seat 614.

[0034] The working principle of the rotation of the traction wheel 513 and the brake assembly 6 is that the starting motor 524 drives the brake disc 523 and the worm 522 to rotate, and then drives the worm wheel 521 to rotate, and then drives the rotating shaft 520 and the traction wheel 513 to rotate. The meshing transmission of the worm 522 and the worm wheel 521 can not only reduce the rotation speed of the traction wheel 513, but also increase the torque of the traction wheel 513, thereby improving the efficiency of the rotation control of the traction wheel 513; When the traction wheel 513 is in a non-rotating state, the electric cylinder 615 is controlled to contract, driving the adjustment seat 614 to move upward, and then the hinged rocker arm 613 moves left and right, driving the positioning plates 612 at both ends to perform relative swing adjustment, effectively clamping and braking the brake disc 523, and effectively braking the worm gear 522 at the same time, thereby ensuring effective braking of the traction wheel 513.

[0035] Combined with Figure 4 and attached Figure 5 As shown, the spraying assembly 4 includes a feed pump 411 arranged on the top surface of the lifting frame 1, one end of the feed pump 411 is provided with a suction pipe 412, and the other end is provided with a feeding pipe 413 of several lengths, the primer box 9 or the topcoat box 10 is respectively provided with a through pipe 414 connected to the suction pipe 412, the suction pipe 412 and the through pipe 414 are detachably connected through a joint body, the lifting frame 1 is provided with a through hole for the through pipe 414 to extend out, a material storage shell 415 is slidably provided on the top surface of the lifting frame 1, the material storage shell 415 is provided with a nozzle 416 facing the wall, and the other end of the feeding pipe 413 is connected to the material storage shell 415.

[0036] In the specific implementation of the present invention, the lifting frame 1 is first selectively fixedly connected with the primer box 9 or the topcoat box 10 through the cooperation of the connecting component 2 and the positioning component 3, and then the suction pipe 412 and the through pipe 414 are connected, so that when the lifting frame 1 moves, it will drive the primer box 9 or the topcoat box 10 to move synchronously, avoiding the hoisting operation when installing the primer box 9 or the topcoat box 10, thereby improving the convenience of fixed installation of the primer box 9 or the topcoat box 10, then the sling 519 and the traction rope 517 are connected, and then the lifting frame 1 is moved upward to the top position of the building, and finally the pulley 518 is fixedly connected to the ground, and the traction rope 517 is in a tensioned state; Under the action of the external automatic control module, the movements of the spraying component 4 and the motor 524 are orderly controlled, so that the external wall surface can be effectively sprayed. During the entire spraying process, the lifting frame 1 is always in a position between the tensioned wire rope 514 and the traction rope 517, thereby ensuring the stability of the lifting frame 1 without using an adsorption component, thereby reducing the production cost of the device and the complexity of the control module.

[0037] The present invention and its embodiments are described above, which is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it and do not deviate from the purpose of the invention, they can creatively design a structure and embodiment similar to the technical solution, which should fall within the protection scope of the present invention.

Claims

1. A wall spraying device for building construction, comprising a lifting frame (1), a primer box (9) and a topcoat box (10), wherein the lifting frame (1) is provided with a support plate (111) at the end facing the outer wall, and a guide wheel (112) is rotatably provided on the support plate (111) for contacting the outer wall, characterized in that: Also includes: A connection component (2) is arranged on the lifting frame (1) and selectively connected to the primer box (9) or the topcoat box (10) in a detachable manner. The lifting frame (1) is sleeved on the primer box (9) or the topcoat box (10). The connection component (2) comprises a connection seat (211) arranged on the inner wall at both ends of the lifting frame (1). Both ends of the outer wall of the primer box (9) and the topcoat box (10) are provided with a docking seat (212) that cooperates with the connection seat (211), and a positioning component (3) is provided between the connection seat (211) and the docking seat (212) to fix the two. A spraying assembly (4) is slidably disposed on the top surface of the lifting frame (1) and selectively connected to the primer box (9) or the topcoat box (10); A traction assembly (5), the traction assembly (5) comprising a support frame (511) of an inverted L-shaped structure arranged on the top surface of a high-rise building, an inverted U-shaped frame (512) being arranged on the horizontal end surface of the support frame (511), and a traction wheel (513) being rotatably arranged on the U-shaped frame (512), a steel wire rope (514) adapted thereto being sleeved in the traction wheel (513), one end of the steel wire rope (514) being connected to the top surface of a lifting frame (1) through a first sling (515), and the other end being connected to a counterweight (516), a traction rope (517) being arranged at the other end of the counterweight (516), a pulley (518) being arranged on the ground for guiding the traction rope (517), and the other end of the traction rope (517) being connected to the bottom surface of the lifting frame (1) through a second sling (519); The brake assembly (6) is arranged on the support frame (511) and performs a braking operation on the traction wheel (513).

2. A wall spraying device for building construction according to claim 1, characterized in that: The positioning assembly (3) comprises positioning pins (311) provided at four corners of the connecting seat (211) and having a rebound function, the docking seat (212) is provided with pin holes (312) for the positioning pins (311) to be inserted, and the connecting seat (211) is provided with a linkage assembly (7) for making the four positioning pins (311) extend synchronously and cooperate with the corresponding pin holes (312).

3. A wall spraying device for building construction according to claim 2, characterized in that: The linkage assembly (7) comprises a mounting cavity (710) provided in the connection seat (211), wedge-shaped seats (711) are provided at opposite ends of the two positioning pins (311), and matching seats (712) adapted thereto are slidably provided in the middle of the two wedge-shaped seats (711) in the mounting cavity (710); Externally threaded rods (713) with opposite threads are respectively provided at the opposite ends of the two mating seats (712); a threaded barrel (714) threadably connected to the externally threaded rods (713) at both ends is rotatably provided in the installation cavity (710); and a transmission assembly (8) is provided on the lifting frame (1) for synchronously rotating the threaded barrels (714) at both ends.

4. A wall spraying device for building construction according to claim 3, characterized in that: The transmission assembly (8) comprises a worm wheel (811) arranged on a threaded cylinder (714); a worm (812) rotatably arranged in the mounting cavity (710) and meshing with the worm wheel (811); two worm wheels (812) are each provided with a rotating shaft (813) extending to the outside of the lifting frame (1); two rotating shafts (813) are each provided with a pulley (814); and a transmission belt (815) matching the two pulleys (814) is wound around the two pulleys (814).

5. A wall spraying device for building construction according to any one of claims 1 to 4, characterized in that: A second rotating shaft (520) connected to a traction wheel (513) is rotatably provided on the U-shaped frame (512); a second worm wheel (521) is provided at the end of the second rotating shaft (520) extending the U-shaped frame (512); and a second worm (522) meshing with the second worm wheel (521) is rotatably provided on the end of the U-shaped frame (512); a brake disc (523) is provided at the end of the second worm (522); the other end of the brake disc (523) is connected to the output shaft of the motor (524); and a brake assembly (6) for braking the brake disc (523) is provided on the support frame (511).

6. A wall spraying device for building construction according to claim 5, characterized in that: The brake assembly (6) comprises a support seat (611) fixedly arranged on a U-shaped frame (512) and located below a brake disc (523); positioning discs (612) for clamping the brake disc (523) are symmetrically hinged at both ends of the support seat (611); swing rods (613) are hinged on the top surfaces of the two positioning discs (612); the other ends of the two swing rods (613) are hinged together on an adjustment seat (614); and an electric cylinder (615) connected to the adjustment seat (614) is fixedly arranged on the support frame (511).

7. A wall spraying device for building construction according to claim 1, characterized in that: The spraying assembly (4) comprises a feed pump (411) arranged on the top surface of the lifting frame (1); one end of the feed pump (411) is provided with a suction pipe (412), and the other end is provided with a feed pipe (413) of a certain length; a through pipe (414) connected to the suction pipe (412) is respectively provided in the primer box (9) or the topcoat box (10); a material storage shell (415) is slidably provided on the top surface of the lifting frame (1); a nozzle (416) facing the wall is provided on the material storage shell (415); and the other end of the feed pipe (413) is connected to the material storage shell (415).

8. The wall spraying device for building construction according to claim 1, characterized in that: A base (525) is fixedly provided on the ground corresponding to the pulley (518), a bearing frame (526) is fixedly provided on the base (525), and the pulley (518) is rotatably connected to the bearing frame (526).

Images