CN105089273B - A fully mechanized wall construction system - Google Patents

Abstract

The invention belongs to the field of buildings, and comprises material transportation equipment, storage equipment, conveying equipment, mixing and stirring equipment and a spraying and building robot; the material transportation equipment is connected with storage equipment at ground work, storage equipment installs at construction site subaerially, storage equipment is connected with conveying equipment, conveying equipment installs between construction site and construction working face, conveying equipment is connected with mixing and agitated vessel, mixing and agitated vessel install on construction working face, mixing and agitated vessel with spout and build the robot and be connected, it installs on construction working face to spout and build the robot, can realize the full mechanized construction of wall body construction process, construction efficiency is improved, labor intensity is reduced, environmental pollution is reduced.

Description

A fully mechanized wall construction system

technical field

The invention belongs to the field of construction, and in particular relates to a fully mechanized construction system in the construction process of sprayed walls.

Background technique

In the construction process of the existing wall, it is roughly divided into masonry, pouring, spraying, splicing and other methods. Masonry is to use pre-formed blocks such as bricks, concrete blocks, etc. to stack them manually. Adhesives are added between them to bond them into a whole to form a wall; pouring is to use a formwork to form a wall-shaped cavity, and pour concrete, mortar and other substances into the cavity of the formwork, and these substances solidify in the formwork to form a wall Spray construction is to build a skeleton first, spray a certain amount of slurry on the skeleton and bond it with the skeleton, attaching one layer to another, and gradually form a wall; splicing is to make a prefabricated wall structure, such as gypsum Boards, wood boards, steel plates, etc. are made into corresponding sizes, and spliced together to form a wall; the above wall building methods require a lot of labor in the process of building the wall, the construction efficiency is low, the labor intensity is high, and the environment will be polluted. , can not realize fully mechanized construction.

Contents of the invention

Aiming at the defects existing in the existing wall-building technology, the present invention proposes a fully mechanized wall-building construction system, which is suitable for building sprayed walls, and is characterized in that it includes material transportation equipment, storage equipment, conveying equipment, mixing and stirring equipment , spraying robot; material transportation equipment works on the ground and is connected with storage equipment, storage equipment is installed on the ground of the construction site, storage equipment is connected with conveying equipment, conveying equipment is installed between the construction site and the construction work surface, conveying equipment is connected with mixing and The mixing equipment is connected, the mixing and mixing equipment is installed on the construction work surface, the mixing and mixing equipment is connected with the spraying robot, and the spraying robot is installed on the construction work surface.

The material transport equipment adopts a tank truck and a powder material transport vehicle, and the tank truck is a vehicle specially used for transporting storage tanks of powdery building materials; the powder material transport vehicle adopts a canned transport vehicle . There are two storage devices, a dry powder material storage tank and a light material storage tank, which are installed on the ground of the construction site. The dry powder storage tank includes a tank body, a dry powder feed port, a dry powder discharge port, and a quantitative feeding valve at the dry powder discharge port; the dry powder feed port and the discharge port of the powder canned transport vehicle of the transportation equipment Docking, the dry powder outlet is connected to the feeding port of the conveying equipment through the quantitative feeding valve.

The light material storage tank includes a tank body, a light material inlet, a light material outlet, a quantitative feeding valve is installed at the light material outlet, the outlet of the quantitative feeding valve and the inlet of the light material conveying equipment connect.

The conveying equipment includes dry powder conveying equipment and light material conveying equipment, the inlet of the dry powder conveying equipment is connected with the quantitative feeding valve at the outlet of the dry powder storage tank, the inlet of the light material conveying equipment is connected with the light material storage tank The dosing valve at the outlet of the valve is connected.

The dry powder conveying equipment includes a blower fan, a conveying pump, a conveying pipeline, and a dry powder collector. The described blower adopts a Roots blower to provide conveying power for the conveying system; the described conveying pump adopts a turntable feed pump, and the conveying pump The inlet is connected to the quantitative feeding valve of the dry powder storage tank, and its outlet is connected to the delivery pipeline near the fan. Its function is to provide the dry powder material to the delivery pipeline; The difference makes the dry powder move forward along the pipeline; the conveying pipeline is a closed hose, one end of the conveying pipeline is connected with the Roots blower, and there is an opening at the conveying pump, which is connected with the discharge port of the conveying pump, and the other end is Connect with the dry powder material collector; the dry powder material collector includes a feed inlet, a main body, and a discharge port, and is installed on the construction work surface, such as the upper floor of a high-rise building; the dry powder material collector is a cyclone Type collector, the feed port of the dry powder feeder is connected to the conveying pipeline; the discharge port of the dry powder feeder is connected to the feed port of the mixer in the mixing and stirring equipment.

The light material conveying equipment includes a fan, a conveying pump, a conveying pipeline, and a light material collector, and the described blower adopts a Roots blower to provide conveying power for the conveying system; the conveying pump adopts a turntable feed pump, and the The conveying pipeline described above is a closed hose, one end of the conveying pipeline is connected with the Roots blower, and there is an opening at the conveying pump, and the opening is connected with the discharge port of the conveying pump, and the other end is connected with the lightweight material collector; The lightweight material collector has a feed inlet, a main body, and a discharge port, and is installed on the construction work surface, such as the upper floor of a high-rise building; the lightweight material collector is a cyclone type collector, and the collector The feed port of the feeder is connected to the conveying pipeline, and the discharge port of the light material collector is connected to the feed port of the mixing and stirring equipment.

The mixing and stirring equipment includes a mixer, a screw mixer, an extrusion pump, and a screw pump; the mixer includes two inlets, one outlet, and the two inlets are respectively connected to the outlet of the light material collector and the dry powder The outlet of the material collector is connected through a quantitative feeder, and the dry powder and light materials entering from the two feed ports are mixed together and connected to the feed port of the screw mixer through the discharge port of the mixer; The feed port of the mixer is connected with the discharge port of the mixer, the discharge port is connected with the extrusion pump, the inlet of the extrusion pump is connected with the discharge port of the screw mixer, and the discharge port of the extrusion pump is connected with the screw pump. The feed port of the screw pump is connected with the discharge port of the extrusion pump, and the outlet of the screw pump is connected with the feed port of the spraying robot.

A specific technical solution of a fully mechanized wall construction system includes material transportation equipment, storage equipment, conveying equipment, mixing and stirring equipment, and spraying robots; seamless connection between various equipment, the material transportation equipment is adopted Back tanker and powdery material transporter, the described backer tanker is a kind of vehicle specially transporting powdery building material storage tanks, which can automatically load and unload material storage tanks, and no dust pollution will be generated during transportation; the powdery The material transport vehicle is a canned transport vehicle; the storage equipment has two, a dry powder storage tank and a light material storage tank, which are installed on the ground of the construction site; the dry powder storage tank is used to store Cement, gypsum sand, powdery mixture of additives; the light material storage tank is used to store light granular materials such as polystyrene particles, plant crushed matter, perlite; the dry powder storage tank includes a tank body, and the dry powder is fed There is a quantitative feeding valve at the dry powder outlet; the dry powder inlet is connected to the outlet of the powder canned transport vehicle of the transportation equipment, and the dry powder outlet passes through the quantitative feeding valve and The feeding port of the conveying equipment is connected; the light material storage tank includes a tank body, a light material inlet, a light material outlet, and a quantitative feeding valve is installed at the light material outlet, and the quantitative feeding valve The outlet is connected to the inlet of the light material conveying equipment; the conveying equipment includes dry powder conveying equipment and light material conveying equipment, the inlet of the dry powder conveying equipment is connected to the quantitative feeding valve at the outlet of the dry powder storage tank, and the light The inlet of the material conveying equipment is connected to the quantitative feeding valve at the outlet of the light material storage tank. The quantitative feeding valve is also called an air closing valve in this industry, and it is used in this industry to quantitatively supply powdery or granular materials. The commonly used equipment is composed of a rotating container and a power source. According to the different specific gravity of the material, a certain volume of space is used to control the volume of the material at the output outlet, thereby controlling the weight of the material at the output outlet; by adjusting the rotation speed of the rotating container, To control the amount of discharged material per unit time; the dry powder conveying equipment includes a fan, a conveying pump, a conveying pipeline, and a dry powder collector, and the described fan adopts a Roots blower to provide conveying power for the conveying system; the described The conveying pump adopts a rotary table feeding pump. The inlet of the conveying pump is connected to the quantitative feeding valve of the dry powder storage tank, and its outlet is connected to the conveying pipeline near the fan. Its function is to provide the dry powder to the conveying pipeline; The pressure difference between the front and rear of the dry powder produced by the air blown by the fan makes the dry powder move forward along the pipeline; the conveying pipeline is a closed hose, and the air sent by the Roots blower and the dry powder sent by the conveying pump are mixed in the pipeline. Due to the pressure difference, the dry powder in the pipeline moves forward along the pipeline. One end of the pipeline is connected to the Roots blower, and there is an opening at the delivery pump, which is connected to the discharge port of the delivery pump, and the other end is connected to the dry powder. The collector is connected; the dry powder collector includes a feed inlet, a main body, and a discharge port, and is installed on the construction work surface, such as the upper floor of a high-rise building; the dry powder collector is a cyclone type collector (It is also called a cyclone dust collector in this industry), the feed port of the dry powder collector is connected to the conveying pipeline, and from the conveying The dry powder coming in from the pipeline enters the feed port of the dry powder collector, and after being collected by the dry powder collector, it will fall to the discharge port of the dry powder collector and then be discharged from the discharge port; the dry powder aggregate The discharge port of the device is connected to the feed port of the mixer in the mixing and stirring equipment; the light material conveying equipment includes a blower fan, a conveying pump, a conveying pipeline, and a light material collector, and the described blower fan adopts a The fan is used to provide conveying power for the conveying system; the conveying pump adopts a rotary feed pump, and its function is to provide light materials to the conveying pipeline, and the light materials in the pipeline are blown by the fan to make the light materials move forward along the pipeline. movement; the conveying pipeline is a closed hose, the wind sent by the Roots blower and the light material sent by the conveying pump are mixed in the pipeline, and the light material moves forward along the pipeline due to the pressure difference, and the conveying pipeline One end is connected with the Roots blower, and there is an opening at the transfer pump, and the opening is connected with the discharge port of the transfer pump, and the other end is connected with the light material collector; the light material collector has a feed port, The main body, the discharge port, is installed on the construction work surface, such as the upper floor of a high-rise building; the lightweight material collector is a cyclone-type collector, and the feed port of the collector is connected with the conveying pipeline, and from the conveying pipeline The incoming light material enters the light material collector and is collected by the light material collector, then falls to the discharge port of the light material collector and then discharged; the discharge port of the light material collector It is connected with the feed port of the mixing and stirring equipment; the mixing and stirring equipment includes a mixer, a screw mixer, an extrusion pump, and a screw pump; the mixer includes two inlets, one outlet, and two inlets respectively The outlet of the light material collector and the dry powder collector are connected through a quantitative feeder, and the dry powder and light materials entering from the two feed ports are mixed together through the outlet of the mixer and The feed port of the spiral mixer is connected; the feed port of the spiral mixer is connected with the discharge port of the mixer, and the discharge port is connected with the extrusion pump. The spiral mixer is a kind of continuous mixing equipment commonly used in this industry. , including feed inlet, machine body, discharge outlet, and water adding device; the mixed material is added with water inside the screw mixer, and then stirred by the blades in the screw mixer to make it a uniformly mixed slurry, and passed through the discharge The port is output to the feed port of the extrusion pump; the extrusion pump is a commonly used conveying equipment for conveying slurry in this industry. Through the extrusion of the pressing wheel of the extrusion pump, the output slurry has a certain pressure and can be transported to A certain distance; the inlet of the squeeze pump is connected to the discharge port of the screw mixer, and the discharge port of the squeeze pump is connected to the feed port of the screw pump. The screw pump is used to transport the slurry under pressure in this industry Its working principle is to rotate the screw with unequal pitch in the rubber sleeve to force the slurry to generate a higher pressure than other conveying methods. Its function is to increase the output pressure of the slurry and make it suitable for spraying; screw The feed port of the pump is connected with the discharge port of the extrusion pump, and the outlet of the screw pump is connected with the feed port of the spraying robot; the spraying robot includes a walking system, a base, a power system, a control system, and a support , a spray gun seat, a spray gun; the walking system includes crawlers, driving wheels, guide wheels, The supporting wheel, the walking system is installed on the base, and the base is used to install and support various components, including the base plate and the side plate; the power system is installed on the base to provide power for the whole robot; The control system described above is installed on the base, including sensors, signal receiving devices, signal analysis and comparison devices, and signal output devices; Up and down movement; the spray gun seat is installed on the support and can move up and down on the support, including the lower seat, the middle seat, the upper seat, and the driving device. The lower seat is installed on the support, and the middle seat is installed on the lower seat. It is connected by a shaft and can swing left and right on the lower seat driven by the driving device. The upper seat is installed on the middle seat, and the upper seat can swing up and down relative to the middle seat driven by the driving device; the spray gun is installed on the upper seat of the spray gun seat. The slurry conveying pipe is connected, and one end is aligned with the target position to be sprayed. The spray gun adopts the spray gun of a screw spraying machine with a telescopic arm.

Beneficial effect

It can realize the fully mechanized construction of the wall construction process, improve construction efficiency, reduce labor intensity, and reduce environmental pollution. The spraying robot can automatically walk, automatically detect and control, and automatically complete the wall spraying process.

Description of drawings

Fig. 1 is a structural representation of the present invention

1. Dry powder fan, 2. Dry powder delivery pump, 3. Dry powder storage tank, 4. Dry powder delivery pipeline, 5. Dry powder collector, 6. Light material collector, 7. Continuous mixer, 8. Squeeze pump, 9. Screw pump, 10. Connecting pipe, 11. Spraying robot, 12. Mixer, 13. Light material delivery pipeline, 14. Light material storage tank, 15. Light material delivery pump , 16. Light material fan;

Figure 2 is a schematic diagram of the structure of the spraying robot

111. Drive wheel, 112. Guide wheel, 113. Track, 114. Support wheel, 115. Base, 116. Spray gun lower seat, 117. Middle seat, 118. Upper seat, 119. Sensor, 1110. Spray gun deck, 1111. spray gun, 1112. bracket, 1113. control system, 1114. power system.

detailed description

Now further illustrate the specific embodiment of the present invention in conjunction with accompanying drawing, the transportation of storage tank adopts the back tanker of standard, and back tanker transports dry powder material storage tank 3 and light material storage tank 14 to construction site, places, as Fig. 1, Choose 18.5kw, 0.6MPa Roots blower as the dry powder fan 1, the diameter of the air outlet of the fan is 75 mm, and use a flange to connect the plastic pipe with a diameter of 75 mm to the dry powder fan 1, and discharge the material under the dry powder storage tank 3 Install a 160-type quantitative feeding valve at the outlet of the quantitative feeding valve, and connect the dry powder material delivery pump 2 at the outlet of the quantitative feeding valve. 1 The connected pipeline is provided with a tee at the dry powder delivery pump 2, one end is connected to the pipe at the outlet of the dry powder fan 1, one end is connected to the dry powder delivery pump 2, and the other end is connected to the dry powder delivery pipeline 4. The diameter of the dry powder delivery pipe 4 is 75 mm, the hose made of canvas, similarly, the back tank truck transports the light material storage tank 14 to the construction site, and places it in the position where the dry powder storage tank 3 is juxtaposed, with a distance of 4000 mm, and will choose 7.5kw, 0.6MPa Roots blower is used as the light material fan 16, and the diameter of the fan air outlet is 75 mm. The plastic pipe with a diameter of 75 mm is connected with the light material fan 16 by a flange, and at the discharge port below the light material storage tank 14, Install a 160-type quantitative feeding valve, and connect the light material delivery pump 15 at the discharge port of the quantitative feeding valve. The light material delivery pump 15 adopts a 5 cubic meter/hour turntable feeding pump, and a light material fan 16 connected pipelines are provided with a tee at the light material delivery pump 15, one end is connected to the pipe at the outlet of the light material fan 16, one end is connected to the light material delivery pump 15, the other end is connected to the light material delivery pipeline 13, and the light material delivery pipe The 13 adopts a hose with a diameter of 75 mm and is made of canvas; the dry powder material collector 5 and the light material collector 6 are installed side by side near the construction work surface, and the dry powder material delivery pipe 4 and the light material material collector are installed side by side near the construction work surface. The conveying pipeline 13 is connected with the feed inlet of the dry powder material collector 5 and the light material material collector 6 respectively, and the two inlets of the mixer 12 are passed through two 160-type quantitative feeders, respectively connected with the dry powder material collector The outlet of the device 5 and the light material collector 6 is connected, and the mixer 12 adopts a metal pipe with a diameter of 150 mm, which is welded into a Y shape. The two nozzles at the upper end are inlets, and one nozzle at the lower end is an outlet; the mixer The outlet of 12 is connected with the feed inlet of the continuous mixer 7, and a spiral mixer of 5 cubic meters per hour is selected as the continuous mixer 7; the discharge outlet of the continuous mixer 7 is connected with the feed inlet of the extrusion pump 8 , select the extrusion pump of 5 cubic meters per hour as the extrusion pump 8, connect the discharge port of the extrusion pump 8 with the feed port of the screw pump 9, select 70 liters or 90 liters of screw type spraying grout in this example The pump is used as the screw pump 9, and the outlet of the screw pump 9 is connected to the inlet of the spray gun on the spraying robot 11 through a composite hose with a diameter of 75 mm; as shown in Figure 2, a wheel with a diameter of 200 mm is used as the drive of the robot 11 Wheel 111 and guide wheel 112, and it is installed on the base 115, The driving wheel 111 is connected with the power system 1114 installed in the base 115, and the rubber track 113 is installed outside the driving wheel 111 and the guide wheel 112, and the width of the track 113 is 200 millimeters; The track 113 guarantees the normal shape. The track 113, the drive wheel 111, the guide wheel 112, and the support wheel 114 form a walking system together. Two sets of walking systems are installed symmetrically on both sides of the base 115, and the power is driven separately; Bracket 1112, and bracket 1112 adopts two threaded columns in this example, with a diameter of 30 mm and a height of 2500 mm; The combination part of seat 116 and support adopts a power-controlled rotatable nut to cooperate with the threads on the support 1112. When the nut is rotated, the nut drives the lower seat 116 of the spray gun to move up and down along the support 1112; the lower seat 116 of the spray gun is equipped with an intermediate seat 117, The middle seat 117 is connected with the lower seat of the spray gun through a worm and gear device with a driving device, and the middle seat 117 can swing left and right around the lower seat 116 of the spray gun; Worm screw device, its top is connected with upper seat 118, and upper seat 118 can swing up and down relatively with middle seat 117; Upper seat 118 is provided with the spray gun deck 1110 of clamping spray gun 1111, and the sensor that is connected with control system is installed on the spray gun deck 1110 119. In this example, the sensor 119 adopts a laser ranging sensor; the spray gun 1111 is installed on the spray gun holder 1110, the front end sprays the wall material, and the rear end is connected with the discharge port of the screw pump 9 with a hose; in order to adapt to different constructions Environment, in this example, a spray gun with a telescopic arm is used to adjust the distance from the spray gun mouth to the construction surface and the distance adjustment when the spray gun mouth is close to the ground and the roof; the control system 1113 is installed on the base 115, and its function is Set working parameters, control the action process of each part, collect the information from the sensor, calculate and compare, and issue instructions to the action parts; the power system 1114 is installed inside the base 115 to provide energy for the device; when working, According to the different walls to be built, different working parameters are set, the spraying robot 11 is placed in front of the work, the power system 1114 is started, the spray gun 1111 sprays the wall material, and the sensor 119 detects the sprayed wall along with the spraying process thickness and height, and transmit the information to the control system 1113, the control system 1113 compares this information with the setting information, thereby instructing the walking system to walk along the direction of the wall and the spray gun support 116 to move up and down along the bracket 1112 or the spray gun 1111 Swing left and right or the spray gun 1111 swings up and down. When the construction environment does not allow the distance between the spray robot 11 and the construction wall to be close enough, the control system 1113 controls the telescopic arm of the spray gun to extend or retract to adjust the appropriate distance; When the spraying is completed, the control system 1113 instructs the power part to stop, and each working unit returns to the original state, and at the same time sends a signal to the construction system to temporarily stop the work of various front-end equipment.

Claims (1)

1. A fully mechanized wall construction system is suitable for building sprayed walls, characterized in that it includes material transport equipment, storage equipment, conveying equipment, mixing and stirring equipment, spray building robots, and material transport equipment working on the ground and Storage equipment connection, storage equipment is installed on the ground of the construction site, storage equipment is connected with conveying equipment, conveying equipment is installed between the construction site and the construction work surface, conveying equipment is connected with mixing and stirring equipment, mixing and stirring equipment is installed in the construction work On the surface, the mixing and agitating equipment is connected with the spraying robot, and the spraying robot is installed on the construction work surface; the material transportation equipment adopts a tank truck and a powder material transport vehicle, and the tank truck is a special transport vehicle A vehicle for storing tanks of powdery building materials; the powdery material transporter is a canned transporter; there are two storage devices, a dry powder storage tank and a light material storage tank, which are installed on the construction site the ground; the dry powder material storage tank includes a tank body, a dry powder feed port, a dry powder discharge port, a quantitative feed valve at the dry powder discharge port, a dry powder feed port and a powder canned transport vehicle of the transportation equipment The discharge port is connected, and the dry powder discharge port is connected with the feed port of the conveying equipment through the quantitative feeding valve; the light material storage tank includes a tank body, a light feed port, a light discharge port, a light Quantitative feeding valve is installed at the quality material outlet, the outlet of quantitative feeding valve is connected with the inlet of light material conveying equipment; The quantitative feeding valve at the outlet of the dry powder storage tank is connected, and the inlet of the light material conveying equipment is connected with the quantitative feeding valve at the outlet of the light material storage tank; the dry powder conveying equipment includes a blower fan, a conveying pump, The conveying pipeline, the dry powder collector, the fan adopts Roots blower to provide conveying power for the conveying system; the conveying pump adopts a turntable feeding pump, and the inlet of the conveying pump is connected with the quantitative feeding valve of the dry powder storage tank , the outlet of which is connected to the conveying pipeline near the fan, and its function is to provide the dry powder material to the conveying pipeline; the pressure difference between the front and rear of the dry powder material transported into the pipeline along with the air blown by the fan makes the dry powder material move forward along the pipeline; The delivery pipeline is a closed hose, one end of the delivery pipeline is connected to the Roots blower, and there is an opening at the delivery pump, the opening is connected to the discharge port of the delivery pump, and the other end is connected to the dry powder material collector; the dry powder The material collector includes a material inlet, a main body, and a material outlet, and is installed on the construction work surface; the dry powder material collector is a cyclone type material collector, and the feed port of the dry powder material collector is connected to the conveying pipeline; The discharge port of the dry powder material collector is connected with the feed port of the mixer in the mixing and stirring equipment; the light material conveying equipment includes a blower fan, a conveying pump, a conveying pipeline, a light material collector, the described The fan adopts Roots blower to provide conveying power for the conveying system; the conveying pump adopts a rotary feed pump, and the conveying pipeline is a closed hose, and one end of the conveying pipeline is connected with the Roots blower, and there is an opening at the conveying pump. Its opening is connected to the discharge port of the delivery pump, and the other end is connected to the light material collector; the light material collector has a feed port , the main body and the discharge port are installed on the construction work surface; the lightweight material collector is a cyclone type collector, the feed port of the collector is connected with the conveying pipeline, and the discharge of the light material collector The mouth is connected with the feed port of the mixing and stirring equipment; the mixing and stirring equipment includes a mixer, a screw mixer, an extrusion pump, and a screw pump; the mixer includes two inlets, one outlet, and two inlets They are respectively connected to the outlet of the light material collector and the outlet of the dry powder material collector through a quantitative feeder, and the dry powder and light materials entering from the two feed ports are mixed together and pass through the outlet of the mixer. It is connected to the feed port of the screw mixer; the feed port of the screw mixer is connected to the discharge port of the mixer, and the discharge port is connected to the extrusion pump, and the inlet of the extrusion pump is connected to the discharge port of the screw mixer. Connection, the discharge port of the extrusion pump is connected with the feed port of the screw pump, the feed port of the screw pump is connected with the discharge port of the squeeze pump, and the outlet of the screw pump is connected with the feed port of the spraying robot; The spraying robot includes a walking system, a base, a power system, a control system, a support, a spray gun seat, and a spray gun; Movement; the spray gun seat is installed on the support and can move up and down on the support, including the lower seat, the middle seat, the upper seat, the driving device, the lower seat is installed on the support, and the middle seat is installed on the lower seat. The shafts are connected and can swing left and right on the lower seat driven by the driving device. The upper seat is installed on the middle seat, and the upper seat can swing up and down relative to the middle seat driven by the driving device; the spray gun is installed on the upper seat of the spray gun seat. The material conveying pipe is connected, and the direction of one end is aligned with the target position to be sprayed. The spray gun adopts the spray gun of a screw spraying machine with a telescopic arm.