A wall spraying device for building construction

Abstract

The present invention relates to the technical field of wall treatment, and discloses a wall spraying device for building construction, which includes a lifting frame, a primer tank and a topcoat tank, and further includes: a connecting component, which is arranged on the lifting frame and is selectively detachably connected to the primer tank or the topcoat tank; a spraying component, which is slidably arranged on the top surface of the lifting frame and is selectively connected in communication with the primer tank or the topcoat tank; a traction component, which is arranged on the top surface of a high-rise building and controls the up and down movement of the lifting frame; a braking component, which is arranged on the support frame and brakes the traction wheel. The present invention can not only conveniently and quickly selectively fixedly connect the lifting frame with the primer tank and the topcoat tank, but also reduce the production cost of the device and the complexity of the control module.

Description

Technical Field

[0001] The present invention relates to the technical field of wall treatment, and specifically refers to a wall spraying device for building construction. Background Art

[0002] With the rapid development of the construction industry, there are more and more high-rise buildings in the country. In building construction, it is necessary to spray the outer walls of high-rise buildings. During the spraying process, it is necessary to spray the primer (the function of the primer can enhance adhesion, sealing and isolation, rust prevention function, mildew and moisture prevention, and save the amount of topcoat) and the topcoat (the function of the topcoat can achieve decorative effects, protection functions, wear resistance and stain resistance) on the surface of the outer wall in sequence.

[0003] When spraying the primer or topcoat on the outer wall of a high-rise building, usually the primer tank or topcoat tank is first hoisted and installed on the hanging basket. The hanging basket is provided with a spraying component connected to the primer tank or topcoat tank and a control module for automatically operating the actions of the spraying component and the descent of the hanging basket. During the process of the spraying component sliding to spray different positions on the outer wall, in order to ensure the stability of the hanging basket, an adsorption component needs to be set at the end of the hanging basket facing the wall. By controlling the start and stop of the adsorption component, the hanging basket is adsorbed on the wall when it stops (spraying operation is carried out at this time). When adjusting the vertical position of spraying, the hanging basket is separated from the wall when it descends.

[0004] In the above operation, a special hoisting device is required to hoist the primer tank or topcoat tank on the hanging basket, so the installation of the primer tank or topcoat tank is limited to a certain extent, reducing the installation efficiency of the primer tank or topcoat tank; moreover, an additional adsorption component and a module connected to the control module and controlling the start and stop of the adsorption component need to be set, 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] To solve the above technical problem, the technical solution provided by the present invention is: a wall spraying device for building construction, including a lifting frame, a primer tank and a topcoat tank, and further including:

[0007] A connecting component, which is arranged on the lifting frame and is selectively detachably connected to the primer tank or the topcoat tank. The lifting frame sleeved on the primer tank or the topcoat tank. The connecting component includes connecting seats arranged on the inner walls at both ends of the lifting frame. Docking seats cooperating with the connecting seats are provided at both ends of the outer walls of the primer tank and the topcoat tank, and a positioning component for fixing the two is provided between the connecting seat and the docking seat;

[0008] The spraying component is slidably arranged on the top surface of the lifting frame and is selectively connected in communication with the primer tank or the topcoat tank;

[0009] The traction component includes a support frame with an inverted L-shaped structure arranged on the top surface of the high-rise building. An inverted U-shaped frame is provided 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 to it is sleeved inside the traction wheel. One end of the steel wire rope is connected to the top surface of the lifting frame through a sling one, and the other end is connected with a counterweight block. A traction rope is provided at the other end of the counterweight block. A pulley for guiding the traction rope is provided on the ground, and the other end of the traction rope is connected to the bottom surface of the lifting frame through a sling two;

[0010] The braking component is arranged on the support frame and performs braking operations on the traction wheel.

[0011] As an improvement, the positioning component includes positioning pins arranged at the four corners of the connecting seat and having a rebounding function. Pin holes for inserting the positioning pins are provided on the docking seat, and a linkage component for synchronously extending the four positioning pins and cooperating with the corresponding pin holes is provided on the connecting seat.

[0012] As an improvement, the linkage component includes an installation cavity opened in the connecting seat. Wedge-shaped seats are provided at the opposite end parts of the two positioning pins. Matching seats adapted to them are respectively arranged in the installation cavity in a slidable manner at the intermediate positions between the two wedge-shaped seats;

[0013] External threaded rods with opposite threads are respectively provided at the opposite end parts of the two matching seats. A threaded cylinder for threaded connection with the external threaded rods at both ends is rotatably arranged in the installation cavity. A transmission component for synchronously rotating the threaded cylinders at both ends is provided on the lifting frame.

[0014] As an improvement, the transmission component includes a worm gear one arranged on the threaded cylinder. A worm one meshing with the worm gear one is rotatably arranged in the installation cavity. Shafts one are respectively provided on the two worm ones and extend to the outside of the lifting frame. Belt pulleys are respectively provided on the two shafts one. A transmission belt adapted to them is jointly wound around the two belt pulleys.

[0015] As an improvement, a shaft two connected to the traction wheel is rotatably arranged on the U-shaped frame. A worm gear two is provided at the end of the shaft two extending out of the U-shaped frame. A worm two meshing with the worm gear two is rotatably arranged at the end of the U-shaped frame. A brake disc is provided at the end of the worm two. The other end of the brake disc is connected to the output shaft of the motor. A braking component for braking the brake disc is provided on the support frame.

[0016] As an improvement, the braking assembly includes a support base fixedly arranged on the U-shaped frame and located below the brake disc. On the support base, positioning discs for clamping the brake disc are symmetrically hinged at both ends of the brake disc. Swing rods are hinged on the top surfaces of the two positioning discs, and the other ends of the two swing rods are jointly hinged on an adjustment seat. An electric cylinder connected to the adjustment seat is fixedly arranged on the support frame.

[0017] As an improvement, the spraying assembly includes a feeding pump arranged on the top surface of the lifting frame. One end of the feeding pump is provided with a suction pipe, and the other end is provided with a feeding pipe of a certain length. Penetrating pipes connected to the suction pipe are respectively arranged in the primer tank or the topcoat tank. A storage shell is slidably arranged on the top surface of the lifting frame. A nozzle facing the wall is arranged on the storage shell, and the other end of the feeding pipe is connected to the storage shell.

[0018] As an improvement, a base is fixedly arranged on the ground corresponding to the pulley. A bearing frame is fixedly arranged on the base, and the pulley is rotatably connected to the bearing frame.

[0019] The beneficial effects of the present invention compared with the prior art are as follows:

[0020] 1. Under the action of the selective detachable connection between the lifting frame and the primer tank and the topcoat tank, the lifting frame can be lowered to a position connected to the primer tank and the topcoat tank, and then the primer tank or the topcoat tank is connected to the lifting frame through the cooperation of the connection assembly and the positioning assembly, so that the primer tank or the topcoat tank moves with the movement of the lifting frame. In this way, the hoisting operation during the installation of the primer tank or the topcoat tank is avoided, and the fixed installation of the primer tank or the topcoat tank can be conveniently and quickly carried out.

[0021] 2. Under the cooperation of the traction wheel, the steel wire rope, the first sling, the counterweight, the towing rope, the pulley and the second sling, during the spraying process, the traction wheel can be controlled to rotate, driving the steel wire rope to move, and then driving the lifting frame to be lowered and adjusted. At this time, the counterweight will rise. Under the action of the pulley, the towing rope and the second sling, the lifting frame is always in a position between the tensioned steel wire rope and the towing rope, so that the stability of the lifting frame during the spraying process can be ensured without using the adsorption assembly.

[0022] 3. Under the common cooperation of the positioning assembly, the linkage assembly and the transmission assembly, multiple positioning pins at both ends can be driven to perform synchronous extension adjustment, and then cooperate with the corresponding pin holes, so that the docking seat can be fixedly connected to the connection seat, and at the same time, the primer tank or the topcoat tank can be conveniently and quickly connected to the lifting frame.

[0023] 4. With the cooperation of the second worm and the second worm wheel and the action of the counterweight, during the process of the second worm driving the second worm wheel to rotate, the rotational speed of the traction wheel can be reduced, and at the same time, the torque of the traction wheel can be increased. Under the action of the counterweight, the power required for the rotation of the traction wheel can be reduced, thereby improving the efficiency of controlling the rotation of the traction wheel;

[0024] Under the action of the braking assembly, the brake disc of the traction wheel can be effectively positioned when the traction wheel is not rotating, thereby improving the positioning effect of the traction wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the structural schematic diagram of the present invention Figure 1 .

[0026] Figure 2 is the front structural schematic diagram of the present invention.

[0027] Figure 3 is the structural schematic diagram of the lifting frame in the present invention Figure 1 .

[0028] Figure 4 is the structural schematic diagram of the lifting frame in the present invention Figure 2 .

[0029] Figure 5 is the structural schematic diagram of the lifting frame, the primer tank and the topcoat tank in the present invention.

[0030] Figure 6 is the structural schematic diagram of the positioning assembly and the linkage assembly in the present invention.

[0031] Figure 7 is the structural schematic diagram of the linkage assembly and the transmission assembly in the present invention.

[0032] Figure 8 is the structural schematic diagram of the traction assembly in the present invention Figure 1 .

[0033] Figure 9 is the structural schematic diagram of the traction assembly in the present invention Figure 2 .

[0034] Figure 10 is the present invention Figure 9 the enlarged structural diagram at A in.

[0035] As shown in the figure: 1. Lifting frame; 111. Support plate; 112. Guide wheel; 2. Connection component; 211. Connection seat; 212. Docking seat; 3. Positioning component; 311. Positioning pin; 312. Pin hole; 4. Spraying component; 411. Feeding pump; 412. Suction pipe; 413. Feeding pipe; 414. Through pipe; 415. Material storage shell; 416. Nozzle; 5. Traction component; 511. Support frame; 512. U-shaped frame; 513. Traction wheel; 514. Steel wire rope; 515. Hoisting tackle one; 516. Counterweight; 517. Traction rope; 518. Pulley; 519. Hoisting tackle two; 520. Second rotating shaft; 521. Second worm gear; 522. Second worm; 523. Brake disc; 524. Motor; 525. Base; 526. Bearing frame; 6. Braking component; 611. Support seat; 612. Positioning disc; 613. Swing rod; 614. Adjusting seat; 615. Electric cylinder; 7. Linkage component; 710. Installation cavity; 711. Wedge-shaped seat; 712. Fitting seat; 713. External threaded rod; 714. Threaded cylinder; 8. Transmission component; 811. First worm gear; 812. First worm; 813. First rotating shaft; 814. Belt pulley; 815. Transmission belt; 816. Hand wheel; 9. Primer tank; 10. Topcoat tank. Detailed implementation mode

[0036] The present invention will be further described in detail below with reference to the accompanying drawings.

[0037] Combined with the attached Figure 1 and the attached Figure 2 and the attached Figure 4 and the attached Figure 5 and the attached Figure 8 As shown in the attached drawings, a wall spraying device for building construction includes a lifting frame 1, a primer tank 9 and a topcoat tank 10. At the end of the lifting frame 1 facing the outer wall, there is a support plate 111, and a guide wheel 112 in contact with the outer wall is rotatably arranged on the support plate 111. It further includes: a connection component 2, which is arranged on the lifting frame 1 and is selectively detachably connected to the primer tank 9 or the topcoat tank 10. The lifting frame 1 sleeved on the primer tank 9 or the topcoat tank 10. The connection component 2 includes connection seats 211 arranged on the inner walls at both ends of the lifting frame 1. At both ends of the outer walls of the primer tank 9 and the topcoat tank 10, there are docking seats 212 that cooperate with the connection seats 211. The docking seats 212 are arranged at both ends of the connection seats 211, and a positioning component 3 for fixing the two is arranged between the connection seats 211 and the docking seats 212; a spraying component 4, which is slidably arranged on the top surface of the lifting frame 1 and is selectively connected in a through manner to the primer tank 9 or the topcoat tank 10.

[0038] Traction assembly 5, the traction assembly 5 includes a support frame 511 with an inverted L-shaped structure fixedly arranged on the top surface of a high-rise building. An inverted U-shaped frame 512 is provided 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 to it are sleeved inside 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 first sling 515, and the other end is connected with a counterweight 516. A traction rope 517 is provided at the other end of the counterweight 516. A pulley 518 for guiding the traction rope 517 is fixedly arranged on the ground. A base 525 is fixedly arranged on the ground corresponding to the pulley 518. A bearing frame 526 is fixedly arranged on the base 525. The pulley 518 is rotatably connected to the bearing frame 526, and the other end of the traction rope 517 is tensionally connected to the bottom surface of the lifting frame 1 through a second sling 519. The first sling 515 and the second sling 519 are steel wire rope slings or chain slings in the prior art, etc.; Braking assembly 6, arranged on the support frame 511 and performing a braking operation on the traction wheel 513.

[0039] With the above structure, when spraying primer or topcoat on the surface of the outer wall, first move the primer tank 9 or the topcoat tank 10 to a position corresponding to the lifting frame 1, then inject primer liquid or topcoat liquid into the primer tank 9 or the topcoat tank 10, then control the traction wheel 513 to rotate, lower the lifting frame 1 to a position where it can cover the primer tank 9 or the topcoat tank 10, fix the primer tank 9 or the topcoat tank 10 on the lifting frame 1 through the connecting assembly 2, then connect the spraying assembly 4 to the primer tank 9 or the topcoat tank 10 in a through manner, then control the traction wheel 513 to rotate in the reverse direction, drive the lifting frame 1 to rise, then connect the second sling 519 to the bottom surface of the lifting frame 1, then connect the end of the traction rope 517 to the second sling 519, then move the lifting frame 1 upward to the top of the high-rise building, and finally fixedly connect the pulley 518 to the ground, and at the same time make its traction rope 517 in a tensioned state;

[0040] Under the action of an external automatic control module, an effective spraying operation is carried out on its outer wall. During the whole spraying process, the lifting frame 1 is always in a position between the tensioned steel wire rope 514 and the traction rope 517, so as to ensure the stability of the lifting frame 1 without using an adsorption assembly.

[0041] Combined with the attached Figure 3 and the attached Figure 6 As shown, the positioning assembly 3 includes positioning pins 311 with a resilience function arranged at the four corners of the connecting seat 211. Pin holes 312 for the positioning pins 311 to insert are opened on the docking seat 212, and a linkage assembly 7 for synchronously extending the four positioning pins 311 and cooperating with the corresponding pin holes 312 is arranged on the connecting seat 211;

[0042] The linkage assembly 7 includes an installation cavity 710 formed in the connection seat 211. Wedge seats 711 are provided at the opposite ends of the two positioning pins 311. Matching seats 712 adapted to them are respectively and slidably provided at the middle positions between the two wedge seats 711 in the installation cavity 710;

[0043] External threaded rods 713 with opposite threads are respectively provided at the opposite ends of the two matching seats 712. A threaded cylinder 714 that is threadedly connected to the external threaded rods 713 at both ends is rotatably provided in the installation cavity 710. A transmission assembly 8 for synchronously rotating the threaded cylinders 714 at both ends is provided on the lifting frame 1.

[0044] The working principle of the positioning assembly 3 is as follows: The lifting frame 1 is sleeved on the primer tank 9 or the topcoat tank 10, and at the same time, its connection seat 211 extends into the docking seat 212. The transmission assembly 8 drives the threaded cylinders 714 at both ends to rotate synchronously. Under the action of the positive and reverse 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, the matching seats 712 at the upper and lower ends of both ends are driven to move away from each other synchronously, and then cooperate with the corresponding wedge seats 711 respectively, so as to drive the multiple positioning pins 311 at both ends to extend outward synchronously and cooperate with the corresponding pin holes 312. In this way, the connection seat 211 and the docking seat 212 can be fixedly connected conveniently and quickly, and thus the primer tank 9 or the topcoat tank 10 can be fixedly connected to the lifting frame 1 conveniently and quickly.

[0045] Combined with the attached Figure 3 and the attached Figure 7 As shown, the transmission assembly 8 includes a first worm gear 811 provided on the threaded cylinder 714. A first worm 812 that meshes with the first worm gear 811 is rotatably provided in the installation cavity 710. A first rotating shaft 813 is provided on each of the two first worms 812 and extends to the outside of the lifting frame 1. A belt pulley 814 is provided on each of the two first rotating shafts 813. A transmission belt 815 adapted to them is jointly wound around the two belt pulleys 814. A handwheel 816 is provided at the end of any one of the first rotating shafts 813 extending out of the belt pulley 814.

[0046] The working principle of the transmission assembly 8 is as follows: Rotate the handwheel 816 to drive one of the first rotating shafts 813 to rotate. Under the action of the belt pulleys 814 and the transmission belt 815 at both ends, the two first rotating shafts 813 are driven to rotate synchronously, and then the two first worms 812 are driven to rotate synchronously, and then the two first worm gears 811 are driven to rotate synchronously, and finally the threaded cylinders 714 at both ends are driven to rotate synchronously.

[0047] Combined with the attached Figure 8 、the attached Figure 9 and the attached Figure 10As 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 from the U-shaped frame 512. 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. The other end of the brake disc 523 is connected to the output shaft of the motor 524. A brake assembly 6 for braking the brake disc 523 is provided on the support frame 511;

[0048] The brake assembly 6 includes a support seat 611 fixedly provided on the U-shaped frame 512 and located below the brake disc 523. On the support seat 611, positioning discs 612 for clamping the brake disc 523 are symmetrically hinged at both ends of the brake disc 523. Arc-shaped surfaces adapted to the end face of the brake disc 523 are respectively provided at the opposite end portions of the two positioning discs 612. 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 commonly hinged on an adjustment seat 614. An electric cylinder 615 connected to the adjustment seat 614 is fixedly provided on the support frame 511. The movable end of the electric cylinder 615 is connected to the adjustment seat 614.

[0049] For the working principle of the traction wheel 513 rotating and the brake assembly 6, start the motor 524 to drive the brake disc 523 and the second worm 522 to rotate, then drive the second worm gear 521 to rotate, and then drive the second rotating shaft 520 and the traction wheel 513 to rotate. The meshing transmission of the second worm 522 and the second worm gear 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 controlling the rotation of the traction wheel 513;

[0050] When the traction wheel 513 is in a non-rotating state, control the electric cylinder 615 to contract, drive the adjustment seat 614 to move upward, and then, under the left and right of the hinge-type swing rod 613, drive the positioning discs 612 at both ends to relatively swing and adjust, effectively clamp and brake the brake disc 523, and at the same time effectively brake the second worm 522, thereby ensuring the effective braking of the traction wheel 513.

[0051] Combined with the attached Figure 4 and the attached Figure 5As shown, the spraying assembly 4 includes a feeding pump 411 arranged on the top surface of the lifting frame 1. One end of the feeding pump 411 is provided with a suction pipe 412, and the other end is provided with a feeding pipe 413 of a certain length. A through pipe 414 connected to the suction pipe 412 is respectively arranged in the primer tank 9 or the topcoat tank 10. The suction pipe 412 and the through pipe 414 are detachably connected through a joint body. A through hole for the through pipe 414 to extend out is formed on the lifting frame 1. A storage shell 415 is slidably arranged on the top surface of the lifting frame 1. A nozzle 416 facing the wall is arranged on the storage shell 415. The other end of the feeding pipe 413 is connected to the storage shell 415.

[0052] When the present invention is specifically implemented, first, the lifting frame 1 is selectively and fixedly connected to the primer tank 9 or the topcoat tank 10 through the cooperation of the connection assembly 2 and the positioning assembly 3. Then, the suction pipe 412 and the through pipe 414 are connected in a through manner. In this way, when the lifting frame 1 moves, it will drive the primer tank 9 or the topcoat tank 10 to move synchronously, avoiding the hoisting operation during the installation of the primer tank 9 or the topcoat tank 10, thereby improving the convenience of the fixed installation of the primer tank 9 or the topcoat tank 10. Then, the second sling 519 and the towing rope 517 are connected. Then, the lifting frame 1 is moved upward to the topmost position of the building. Finally, the pulley 518 is fixedly connected to the ground, and at the same time, its towing rope 517 is in a tensioned state;

[0053] Under the action of an external automatic control module, the actions of the spraying assembly 4 and the motor 524 are controlled orderly, so as to effectively spray the outer wall. During the whole spraying process, the lifting frame 1 is always located between the tensioned steel wire rope 514 and the towing rope 517, so as to ensure the stability of the lifting frame 1 without using an adsorption assembly, reducing the production cost of the device and the complexity of the control module.

[0054] The above describes the present invention and its implementation manners. Such a description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and design a structural manner and an embodiment similar to this technical solution without creative work without departing from the purpose of the present invention, they shall 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) for detachable connection. The lifting frame (1) is sleeved on the primer box (9) or the topcoat box (10). The bottom of the lifting frame (1) is an open structure. When connecting the primer box (9) or the topcoat box (10), the lifting frame (1) is first lowered to a position where it can sleeve the primer box (9) or the topcoat box (10), and then the primer box (9) or the topcoat box (10) is fixed to the lifting frame (1) through the connection component (2). The connection component (2) includes a connection 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 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 out of 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).

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