A multi-functional automatic spraying machine

Abstract

A multi-functional automatic hydroseeding machine includes a mixing device, a power system, a control system, a universal spray gun, and a wet soil sieve. The screening mechanism of the wet soil sieve is mounted on the frame via rollers. Its drive system uses dual motors. Every other roller on the frame is connected in series via a chain and a sprocket at one end. The drive motors are then connected by chains, with each drive motor connecting half of the rollers. The discharge port of the screening device corresponds to the feed port of the hydroseeding machine's tank. The power system of the hydroseeding machine includes a main engine and an auxiliary engine. The main engine is connected to the hydroseeding pump, and the auxiliary engine is connected to the mixing device and a generator. The universal spray gun is located on the top platform at the front of the frame and consists of two electrically controlled rotary joints connected to the nozzles via bends. The feed port is connected to the discharge port of the hydroseeding pump via a steel pipe. This multi-functional automatic hydroseeding machine adopts both remote control and manual operation, improving equipment operating efficiency. It is multifunctional and convenient and flexible to operate.

Description

Technical Field

[0001] This utility model relates to a hydroseeding device for greening engineering construction, and more particularly to a multi-functional automatic hydroseeding machine. Background Technology

[0002] In the process of greening slopes on both sides of roads in mountainous and hilly areas or repairing steep slopes, long-distance hydroseeding equipment is often used due to environmental limitations. Traditional hydroseeding machines are usually operated by multiple workers standing on top of the machine, with workers manually controlling the hydroseeding operation by holding the spray gun. Due to the high pipeline pressure and excessive load on the hydroseeding machine, it is easy for the workers to lose control of the spray gun. Therefore, existing hydroseeding machines pose safety hazards during operation and construction, are prone to accidents, and require multiple workers, resulting in a waste of manpower.

[0003] To achieve mechanized hydroseeding using omnidirectional spray guns, the applicant proposed "An Intelligent Multifunctional Hydroseeding Machine" (patent publication number CN215735742U). This machine includes a main body with a first drive mechanism for rotating the omnidirectional spray gun. The first drive mechanism is electrically connected to a control handle via a controller. The omnidirectional spray gun can be rotated and its direction adjusted by remotely controlling the control handle, effectively preventing injuries caused by excessive pipeline pressure leading to pipe bursts or loss of control. Remote operation ensures flexibility and effective construction. However, a crucial raw material supply device is required in hydroseeding operations: a wet soil screening machine is needed to provide qualified soil substrate. Existing wet soil screening machines either have poor screening efficiency or suffer from poor material feeding due to structural limitations, affecting work efficiency. The applicant previously filed a patent application titled "A Wet Soil Screening Device and Hydroseeding Machine" (patent publication number CN214916779U), which includes a roller screen with a crushing unit inside. The crushing unit includes a crushing shaft parallel to the roller screen's rollers and a drive mechanism. The drive mechanism drives the crushing shaft to rotate, thereby crushing large-sized materials located on the roller screen's mesh. Placing the roller screen on a hydroseeding machine allows the screened material to flow directly into the machine, saving manpower and resources, improving production and construction efficiency. Furthermore, using a roller screen instead of a traditional drum screen effectively improves the screening effect on wet soil and eliminates the adhesion of wet soil to the drum screen. The addition of the crushing unit increases the utilization rate of soil clods, further enhancing construction efficiency. However, during use, it was found that this wet soil screening machine still has room for improvement in terms of quality and efficiency.

[0004] Furthermore, for safety reasons, ease of operation, and the inevitable trend of intelligent manufacturing to increase the automation level of hydroseeding machines—which can bring greater convenience and safety performance and effectively improve work efficiency—further improvements are necessary. Currently, the automatic hydroseeding control technology for hydroseeding machines is not mature enough, and its operation is not convenient or flexible enough. Summary of the Invention

[0005] This utility model addresses the shortcomings of existing technologies by proposing a multi-functional automatic spraying machine that combines remote control and manual operation, thereby improving equipment operating efficiency. It offers diverse functions and is convenient and flexible to use.

[0006] The technical solution adopted in this utility model is as follows:

[0007] Design a multi-functional automatic spraying machine, which is equipped with a tank (101), a mixing device, a power system, a control system, a universal spray gun (102), and a wet soil screening machine (103) on its frame (100). The wet soil screening machine (103) includes a frame (1), a screening mechanism, a drive system, and a hopper (2). The screening mechanism is mounted on the frame via rollers, with a sprocket installed at one end of the rollers. The hopper (2) is mounted on the frame, with a discharge port (14) at the bottom. The hopper (2) has a slag discharge port (5) parallel to one side of the rollers. The drive system uses a dual-motor drive. The rollers mounted on the frame are connected in series by a chain with a sprocket at one end, and then connected to the drive motor at the rear end of the frame via a sprocket and a chain. Each drive motor is connected to... Half of the rollers; a scraper net (11) is provided below the rollers; a wet soil screening machine (103) is set above the tank (101), and its discharge port (14) corresponds to the feed port of the tank (101); the power system of the spraying machine is placed on one side of the tank at the front end of the frame, including a main engine and an auxiliary engine. The main engine is connected to the spraying pump through a V-belt, and the auxiliary engine is connected to the mixing device and generator through a V-belt; the universal spray gun (102) is placed on the top platform in front of the frame. The universal spray gun is composed of two electrically controlled rotary joints connected to the nozzle through a bend pipe. The feed port is connected to the discharge port of the spraying pump through a steel pipe; the control system includes a main control circuit and a remote control circuit, which are respectively connected to the mixing device, the power system, the screening device and the universal spray gun.

[0008] The multi-functional automatic spraying machine, the slag discharge port (5) of the wet soil screening machine (103) is installed at the front end of the hopper (2) by a hinge, and can be flipped up and retracted during transportation; the scraper net (11) below the screening mechanism is provided with scraper nets, the scraper nets are concave and convex, the convex surface is close to the roller surface, and is used to scrape off the material adhering to the roller.

[0009] The multi-functional automatic spraying machine's control system includes a wet soil screening machine drive control circuit. The main control circuit input terminal is connected to the power supply terminal via a fuse box. The two main control circuit output terminals are respectively connected to two drive motors. Each drive motor drive control circuit includes forward and reverse rotation control circuits. The power supply line is connected to the forward and reverse rotation relay input terminals of the two drive motors via a fuse box. The output terminals of the forward and reverse rotation relays are connected to the motors. The relays are solid-state relays. The dual-motor drive control circuit includes a remote control circuit, which includes a remote controller and a remote controller receiver. The remote controller is equipped with a one-button start button, a forward rotation button, a reverse rotation button, and a stop button. The remote controller receiver, its control I / O, and the solid-state relays are connected to the power supply via corresponding control switches. The four output terminals of its control I / O board are connected to the control coils of four control switches. Correspondingly, four control switches are provided, each connected to two solid-state relays. The four control switches are respectively connected to the forward and reverse rotation relays of the two drive switches.

[0010] The multi-functional automatic spraying machine has a stator end flange of the first electrically controlled rotary joint of the universal spray gun (102) connected to the equipment discharge pipe, which is vertically installed to achieve horizontal plane angle rotation. The rotor end flange of the first electrically controlled rotary joint is connected to the second electrically controlled rotary joint through the material conveying bend. The second electrically controlled rotary joint is horizontally installed to achieve vertical plane angle rotation. The rotor end flange of the second electrically controlled rotary joint of the universal spray gun (102) is connected to the nozzle through the spraying bend.

[0011] The multi-functional automatic spraying machine, the electrically controlled rotary joint, consists of a stator housing (201), a rotor core (202), and connecting flanges at both ends. The rotary drive mechanism uses a control motor (3) to drive a worm gear and a worm. A worm gear (4) is provided inside the stator housing (201), and bearings are installed at both ends of the worm gear. One end of the worm gear (4) is connected to the output shaft of the control motor (3), and the other end of the worm gear (4) is provided with a manual crank connection port. The control motor (3) is fixedly installed on the stator. On one side of the outer casing (201); a turbine (205) is provided on the outer edge of the rotor core (202). The rotor core (202) is set inside the stator casing (201) through bearings on both sides and sealing rings. The turbine (205) is connected to the worm (4) for transmission. One end of the worm (4) is connected to the control motor for transmission, and the other end extends out of the stator casing (201). The end of the extended end is provided with a crank handle interface (2011), and a manual crank handle (12) is provided in conjunction with the crank handle interface (2011).

[0012] The multi-functional automatic spraying machine is equipped with forward and reverse control circuits for each of the two rotary joint control motors. The input of each forward and reverse control circuit is connected to a power supply, and the output is connected to the control motor. A remote control device is also provided with the control circuit. The forward and reverse control circuits are located in the power distribution cabinet and are connected to the power supply of the remote control receiver board in the cabinet using a 24V power supply. The power supply is also connected to the control motors of the two rotary joints. The communication output port of the remote control receiver board is also connected to the control motors of the two rotary joints. The control motors are servo motors.

[0013] The multi-functional automatic spraying machine's control system includes main engine control, auxiliary engine control, mixing system control, screening device, and universal spray gun remote control circuit; the remote control circuit includes a remote controller, a remote control receiver circuit, and a remote control control circuit; the engine throttle control is a stepper motor control; and the mixing forward and reverse rotation and pump start / stop are controlled by air valves.

[0014] The aforementioned multi-functional automatic spraying machine can be manually controlled via a centralized control panel.

[0015] The multi-functional automatic spraying machine, the control system includes a motion-sensing remote control circuit, the motion-sensing remote control circuit is connected to a remote control receiver board, the remote control receiver board is connected to the control circuit of the throttle stepper motor, the drive motor of the wet soil screening machine (103) and the control motor of the universal spray gun (102).

[0016] Beneficial effects of the utility model:

[0017] 1. This utility model of a multi-functional automatic spraying machine can be operated by both remote control and manual operation, achieving complete machine control. No personnel are required to operate the equipment, making it convenient, flexible, safe, and efficient. The manual remote control handle drives the rotation of the omnidirectional spray gun, thereby adjusting its direction, starting and stopping the engine, adjusting the throttle, forward and reverse mixing, starting and stopping the screening device, engaging and disengaging the clutch, one-button spraying, and remote control operation of the omnidirectional spray gun. It is simple to operate, multifunctional, improves equipment operating efficiency, reduces safety hazards, and ensures production safety.

[0018] 2. This utility model of a multi-functional automatic hydroseeding machine adopts an automatically controlled universal spray gun and a wet soil screening machine. It utilizes a throttle stepper motor remote control circuit, as well as remote control circuits for the screening device and the universal spray gun, enabling remote control operation of the entire machine. Operation is simple, flexible, and convenient. Automatic hydroseeding can be initiated with a one-button start, or the universal spray gun can be controlled using motion-sensor buttons for targeted spraying of specific areas. Operational safety is high.

[0019] 3. This utility model of a multi-functional automatic hydroseeding machine adopts a dual-motor driven wet soil screening machine, which improves screening power and further enhances the wet soil screening effect. The soil is discharged smoothly and without jamming, saving labor, improving construction efficiency, and effectively ensuring construction results. It uses an automatically controlled omnidirectional spray gun, making operation convenient, flexible, and highly safe. Attached Figure Description

[0020] Figure 1 The diagram shown is a schematic representation of the overall structure of the multifunctional automatic spraying machine of this utility model.

[0021] Figure 2-5 They are respectively Figure 1 The following are the front view, rear view, left view, and top view of the hydroseeding machine.

[0022] Figure 6 The diagram shown is a schematic diagram of the main structure of the dual-motor driven wet soil screening machine of the multifunctional automatic hydroseeding machine of this utility model.

[0023] Figure 7-10 The figures shown are respectively Figure 6 The left, right, top, and bottom views of the wet soil screening machine are shown.

[0024] Figure 11 The diagram shown is a schematic of the overall structure of the universal spray gun of the multifunctional automatic spraying machine of this utility model.

[0025] Figure 12 The image shown is a cross-sectional view of the electrically controlled rotary joint of the universal spray gun.

[0026] Figure 13 The figure shown is a longitudinal section of the electrically controlled rotary joint of the universal spray gun.

[0027] Figure 14 The diagram shown is the circuit diagram of the control system for the multifunctional automatic spraying machine of this utility model.

[0028] Figure 15 The diagram shown is the remote control wiring diagram of the multi-functional automatic spraying machine control system of this utility model.

[0029] Figures 16(a) and 16(b) show the remote control for the hydroseeding machine and the remote control for the wet soil screening machine of this utility model, respectively. Detailed Implementation

[0030] To make the technical concept and advantages of the invention clearer, the technical solution of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the following embodiments are merely preferred embodiments for explaining and illustrating this utility model, and should not be considered as, nor constitute a limitation on, the scope of patent protection claimed for this utility model.

[0031] Example 1

[0032] See Figure 1-1 6. This utility model of a multi-functional automatic spraying machine includes a tank (101) mounted on a frame 100, a mixing device, a power system, a control system, a universal spray gun 102, and a wet soil screening machine 103. The wet soil screening machine 103 includes a frame 1, a screening mechanism, a drive system, and a hopper 2. The screening mechanism is mounted on the frame via rollers 3, with a sprocket mounted at one end of the rollers 3. The hopper 2 is mounted on the frame, with a discharge port 14 at the bottom and a slag discharge port 5 on one side of the hopper 2 parallel to the rollers. The drive system uses a dual-motor drive. The rollers mounted on the frame are connected in series by a chain with a sprocket at one end, and then connected to the drive motor 6 at the rear end of the frame via a sprocket and a chain. Each drive motor is connected to half of the rollers. A scraper is provided below the rollers. Net 11; The wet soil screening machine 103 is set above the tank 101, and its discharge port 14 corresponds to the feed port of the tank 101; The power system of the spraying machine is placed on one side of the tank at the front end of the frame 100, including a main engine 106 and an auxiliary engine 107. The main engine 106 is connected to the spraying pump 126 through a V-belt, and the auxiliary engine 107 is connected to the mixing device and the generator 105 through a V-belt; The universal spray gun 102 is placed on the top platform in front of the frame. The universal spray gun 102 is composed of two electrically controlled rotary joints connected to the nozzle through a bend pipe. The feed port is connected to the discharge port of the spraying pump 126 through a steel pipe; The control system includes a main control circuit and a remote control circuit, which are respectively connected to the mixing device, the power system, the screening device and the universal spray gun.

[0033] Figure 1 In the diagram, 108 is the observation port / feeding port, 109 is the manual control box, 110 is the power switch, 111 is the battery, 112 is the sealed cooling tank, and 113 is the electrical control box of the wet soil screening machine. Figure 2 In the diagram, 116 is the pneumatic controller, 117 is the forward / reverse gearbox, and 118 is the forward / reverse control valve. Figure 4 , Figure 5 In Figure 16, 119 is the clutch controller, 120 is the power system control electrical box, 121 is the throttle controller, 122 is the engine shutdown controller, 123 is the fuel filler cap, 124 is the manual stirring lever, and 125 is the foot accelerator. In Figure 16, 114 is the remote control for the hydroseeding machine (including the throttle control for the hydroseeding pump and the control for the universal spray gun), and 115 is the remote control for the wet soil screening machine.

[0034] This utility model of a multi-functional automatic spraying machine can be operated by both remote control and manual operation, achieving complete machine control. No personnel are required to operate the equipment, making it convenient, flexible, safe, and efficient. The manual remote control handle drives the rotation of the omnidirectional spray gun, thereby adjusting its direction, starting and stopping the engine, adjusting the throttle, forward and reverse mixing, starting and stopping the screening device, engaging and disengaging the clutch, one-button spraying, and remotely controlling the omnidirectional spray gun.

[0035] Example 2

[0036] See Figure 6-10 The multi-functional automatic spraying machine in this embodiment differs from that in Embodiment 1 in that: the slag discharge port 5 of the wet soil screening machine 103 is hinged and installed at the front end of the hopper 2, allowing it to be flipped up and retracted during transportation; the scraper screen 11 below the screening mechanism is equipped with scraper screens 12, which are concave-convex in shape, with the convex surface close to the roller surface, used to scrape off the material adhering to the roller. In the figure, 7 is the sprocket guard, 8 is the motor guard, 9 is the lifting hole, and 13 is the motor guard plate.

[0037] Example 3

[0038] See Figure 14 , 15 The multifunctional automatic spraying machine of this embodiment differs from that of Embodiments 1 or 2 in that: the control system includes a wet soil screening machine drive control circuit. The input terminal of the main control circuit of the control circuit is connected to the power supply terminal through a fuse box. The output terminals of the two main control circuits are respectively connected to two drive motors. Each drive motor drive control circuit includes forward and reverse control circuits. The power supply line is connected to the input terminals of the forward and reverse relays of the two drive motors through a fuse box. The output terminals of the forward and reverse relays are connected to the motors. The relays are solid-state relays. The dual-motor drive control circuit includes a remote control circuit, which includes a remote controller and a remote controller receiver. The remote controller is equipped with a one-button start button, a forward button, a reverse button, and a stop button. The remote controller receiver, its control I / O, and the solid-state relays are connected to the power supply through corresponding control switches. The four output terminals of its control I / O board are connected to the control coils of four control switches. Correspondingly, four control switches are provided, each connected to two solid-state relays. The four control switches are respectively connected to the forward and reverse relays of the two drive switches.

[0039] Example 4

[0040] See Figure 11-13 The multi-functional automatic spraying machine of this embodiment differs from that of Embodiment 1 in that: further, the stator end flange of the first electrically controlled rotary joint 20 of the universal spray gun 102 is connected to the equipment discharge pipe, and the vertical installation realizes horizontal plane angle rotation. The rotor end flange of the first electrically controlled rotary joint is connected to the second electrically controlled rotary joint 22 through the material conveying bend 21. The second electrically controlled rotary joint is installed horizontally to realize vertical plane angle rotation. The rotor end flange of the second electrically controlled rotary joint of the universal spray gun (102) is connected to the nozzle 25 through the spray bend 23.

[0041] The universal spray gun, with its electrically controlled rotary joint, consists of a stator housing 201, a rotor core 202, and connecting flanges at both ends. The rotary drive mechanism uses a control motor 3 to drive a worm gear and a turbine. A worm gear 4 is located inside the stator housing 201, with bearings 207 installed at both ends. One end of the worm gear 4 is connected to the output shaft of the control motor 3, and the other end has a manual crank handle connection port. The control motor 3 is fixedly installed on one side of the stator housing 201. A turbine 205 is located on the outer edge of the rotor core 202. The rotor core 202 is housed within the stator housing 201 via bearings 207 on both sides and a sealing ring 208. The turbine 205 is connected to the worm gear 4 for transmission. One end of the worm gear 4 is connected to the control motor for transmission, and the other end extends out of the stator housing 201. A crank handle interface 2011 is provided at the end of this extended end, and a manual crank handle is provided in conjunction with the crank handle interface 2011.

[0042] Figure 11-13 In the middle, number 24 is a quick-change connector, installed at the outlet end of the spray bend 23, which facilitates the installation of different nozzles; 2013 is an oil cup, which is connected to the inner cavity of the stator housing to facilitate the addition of lubricating oil.

[0043] Example 5

[0044] The multi-functional automatic spraying machine in this embodiment differs from the aforementioned embodiments in that: each of the two rotary joint control motors is equipped with a forward and reverse rotation control circuit. The input terminal of the forward and reverse rotation control circuit is connected to a power supply, and the output terminal is connected to the control motor. A remote control device is also provided with the control circuit. The forward and reverse rotation control circuit is located in the power distribution cabinet and uses a 24V power supply connected to the power supply terminal of the remote control receiver board in the power distribution cabinet. The power supply is also connected to the control motors of the two rotary joints, and the communication output port of the remote control receiver board is also connected to the control motors of the two rotary joints. The control motor is a servo motor.

[0045] This utility model relates to a multi-functional automatic spraying machine. Its control system includes main engine control, auxiliary engine control, mixing system control, a screening device, and a remote control circuit for the universal spray gun. The remote control circuit includes a remote controller, a remote controller receiver circuit, and a remote controller circuit. The engine throttle control is achieved via a stepper motor. The forward and reverse rotation of the mixing system and the start / stop of the pump are controlled by an air valve. The control circuit includes a motion-sensing remote control circuit, which is connected to a remote controller receiver board. The remote controller receiver board is connected to the control circuits of the throttle stepper motor, the drive motor of the wet soil screening machine 103, and the control motor of the universal spray gun 102.

[0046] The working process of this multifunctional automatic spraying machine is as follows:

[0047] Add an appropriate amount of clean water to tank 101 (a flow control device can be optionally installed for precise addition without requiring personnel to check the equipment). Start the mixing engine and increase the throttle until the generator voltage reaches approximately 400V. Start the wet soil screening machine 103 to perform screening. After screening, add the required auxiliary materials and mix thoroughly. After mixing, start the main engine, adjust the universal spray gun 102 to the slope where spraying is needed, engage the clutch, increase the main engine throttle to the desired position, and remotely control the universal spray gun to perform spraying. Alternatively, you can activate the one-button spraying button for automatic spraying. You can also use the motion-sensing operation button to control the universal spray gun for additional spraying in specific areas. This allows for operation with one piece of equipment, one vehicle, and one operator.

[0048] Compared with existing technologies, this utility model can be operated by both remote control and manual control (centralized control through an operating console) to achieve whole machine control. It does not require personnel to stand on the equipment to operate it, making it convenient, flexible, safe and efficient to use.

Claims

1. A multi-functional automatic hydroseeding machine, comprising a tank (101), a mixing device, a power system, a control system, a universal spray gun (102), and a wet soil screening machine (103) mounted on its frame (100), characterized in that: The wet soil screening machine (103) includes a frame (1), a screening mechanism, a drive system, and a hopper (2). The screening mechanism is mounted on the frame via rollers, with a sprocket installed at one end of the rollers. The hopper (2) is mounted on the frame, with a discharge port (14) at the bottom. A slag discharge port (5) is provided on one side of the hopper (2) parallel to the rollers. The drive system uses a dual-motor drive. The rollers mounted on the frame are connected in series by a chain with a sprocket at one end, and then connected to the drive motor at the rear end of the frame via a sprocket and a chain. Each drive motor is connected to half of the rollers. A scraper net (11) is provided below the rollers. The wet soil screening machine (103) is located in the tank. Above (101), its discharge port (14) corresponds to the feed port of the tank (101); the power system of the spraying machine is placed on one side of the tank at the front end of the frame, including a main engine and an auxiliary engine. The main engine is connected to the spraying pump through a V-belt, and the auxiliary engine is connected to the mixing device and generator through a V-belt; the universal spray gun (102) is placed on the top platform in front of the frame. The universal spray gun is composed of two electrically controlled rotary joints connected to the nozzle through a bend pipe. The feed port is connected to the discharge port of the spraying pump through a steel pipe; the control system includes a main control circuit and a remote control circuit, which are respectively connected to the mixing device, the power system, the screening device and the universal spray gun.

2. The multi-functional automatic spraying machine according to claim 1, characterized in that: The slag discharge port (5) of the wet soil screening machine (103) is installed at the front end of the hopper (2) by a hinge, and can be flipped up and retracted during transportation; the scraper net (11) below the screening mechanism is provided with scraper nets, which are concave and convex, with the convex surface close to the roller surface, and are used to scrape off the material adhering to the roller.

3. The multi-functional automatic spraying machine according to claim 1 or 2, characterized in that: The control system includes a wet soil screening machine drive control circuit. The main control circuit input is connected to the power supply via a fuse box. The outputs of the two main control circuits are connected to two drive motors respectively. Each drive motor drive control circuit includes forward and reverse control circuits. The power supply line is connected to the input terminals of the forward and reverse relays of the two drive motors via a fuse box. The output terminals of the forward and reverse relays are connected to the motors. Solid-state relays are used. The motor drive control circuit includes a remote control circuit, which includes a remote controller and a remote controller receiver. The remote controller is equipped with a one-button start, forward, reverse, and stop button. The remote controller receiver, its control I / O, and the solid-state relays are connected to the power supply via corresponding control switches. The four output terminals of its control I / O board are connected to the control coils of four control switches. Correspondingly, four control switches are provided, each connected to two solid-state relays. The four control switches are also connected to the forward and reverse relays of the two drive switches respectively.

4. The multi-functional automatic spraying machine according to claim 1 or 2, characterized in that: The stator end flange of the first electrically controlled rotary joint of the universal spray gun (102) is connected to the equipment discharge pipe. Vertical installation enables horizontal plane angle rotation. The rotor end flange of the first electrically controlled rotary joint is connected to the second electrically controlled rotary joint through the material conveying bend. The second electrically controlled rotary joint is horizontally installed to achieve vertical plane angle rotation. The rotor end flange of the second electrically controlled rotary joint of the universal spray gun (102) is connected to the nozzle through the spray bend.

5. The multi-functional automatic spraying machine according to claim 4, characterized in that: The electrically controlled rotary joint consists of a stator housing (201), a rotor core (202), and connecting flanges at both ends. The rotary drive mechanism uses a control motor (3) to drive a worm gear and a worm. A worm gear (4) is provided inside the stator housing (201). Bearings are installed at both ends of the worm gear. One end of the worm gear (4) is connected to the output shaft of the control motor (3), and the other end of the worm gear (4) is provided with a manual crank handle connection port. The control motor (3) is fixedly installed on one side of the stator housing (201). A worm gear (205) is provided on the outer edge of the rotor core (202). The rotor core (202) is set inside the stator housing (201) through bearings on both sides and sealing rings. The worm gear (205) is connected to the worm gear (4) for transmission. One end of the worm gear (4) is connected to the control motor for transmission, and the other end extends out of the stator housing (201). The end of the extended end is provided with a crank handle interface (2011), and a manual crank handle (12) is provided in conjunction with the crank handle interface (2011).

6. The multifunctional automatic spraying machine according to claim 5, characterized in that: Each of the two rotary joint control motors is equipped with a forward and reverse rotation control circuit. The input terminal of the forward and reverse rotation control circuit is connected to a power supply, and the output terminal is connected to the control motor. A remote control device is also provided with the control circuit. The forward and reverse rotation control circuit is located in the power distribution cabinet and uses a 24V power supply connected to the power supply terminal of the remote control receiver board in the power distribution cabinet. The power supply is also connected to the control motors of the two rotary joints. The communication output port of the remote control receiver board is also connected to the control motors of the two rotary joints. The control motors are servo motors.

7. The multi-functional automatic spraying machine according to claim 1, 2, 5 or 6, characterized in that: The control system includes main engine control, auxiliary engine control, mixing system control, screening device, and universal spray gun remote control circuit; the remote control circuit includes a remote controller, a remote control receiver circuit, and a remote control control circuit; the engine control is a stepper motor controlling the engine throttle; the forward and reverse rotation of the mixing system and the start and stop of the spray pump are controlled by air valves.

8. The multifunctional automatic spraying machine according to claim 7, characterized in that: The control system includes a motion-sensing remote control circuit, which is connected to a remote control receiver board. The remote control receiver board is connected to the control circuit of the throttle stepper motor, the drive motor of the wet soil screening machine (103), and the control motor of the universal spray gun (102).

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