Barrier environment special AGV

Abstract

The present application relates to air purification technical field, specifically is a kind of barrier environment special AGV, including machine body, the upper end surface of machine body is along the center ring and is arranged with multiple air inlet pipes, the side of multiple air inlet pipes close is jointly installed with the central tube in the inner cavity of machine body, the outer edge of central tube is ring and is arranged with multiple branch pipes, negative pressure module is equipped in branch pipe, the inner cavity of central tube is respectively provided with upper circle and lower circle from top to bottom, it is arranged symmetrically between upper circle and lower circle, the present application can independently complete the double working condition automatic switching of negative pressure suction gas collection and pressurization rapid exhaust, different from the working mode of single negative pressure air intake, natural low-speed exhaust of traditional ventilation equipment, by mechanical linkage structure, stable negative pressure is built when air intake, air collection is completed, when exhaust, form positive pressurization thrust and accelerate airflow flow, effectively solve the problem of slow airflow velocity, air circulation lag, low purification efficiency of conventional purification equipment.

Description

Technical Field

[0001] This invention relates to the field of air purification technology, specifically to an AGV (Automated Guided Vehicle) designed for use in barrier environments. Background Technology

[0002] As a core component of wind power equipment, wind turbine blades are constantly exposed to complex outdoor conditions involving alternating corrosion from wind, sand, salt spray, rain, and ultraviolet radiation. The surface anti-corrosion coating process directly determines the blade's service life, aerodynamic performance, and overall operational safety. Wind turbine blades are large, with continuous high-curvature curved surfaces, thick-walled root structures, and sharp edges and corners, demanding extremely high standards for coating uniformity, complete coverage of edges and corners, coating adhesion, and coating density. Currently, the mainstream protective coating processes in the industry are divided into two main categories: traditional liquid spraying and plasma spraying. Traditional blade spraying equipment and processes still have many unavoidable production defects. Even with the gradual implementation of plasma spraying technology, which offers superior protection, in the field of wind turbine blade corrosion protection, existing supporting spraying equipment still has compatibility limitations and cannot fully meet the needs of high-precision, full-area, and automated anti-corrosion spraying production for blades. Conventional spraying equipment can only perform spraying operations at fixed angles and intervals, and cannot synchronously adjust the spray gun angle and spraying interval according to the size and curvature of different blade specifications. This easily leads to problems such as missed spraying at blade edges and corners and uneven spraying thickness on curved surfaces. It has poor adaptability and requires repeated manual adjustments to the spraying mechanism, which is time-consuming and results in low efficiency for mass production. Open spraying operations are prone to paint mist splattering, which not only pollutes the workshop production environment but also wastes paint. At the same time, the harmful exhaust gases generated during spraying cannot be discharged in a timely manner, endangering the health of operators. In addition, external dust and moisture can easily enter the spraying area and adhere to the uncured paint film surface, significantly reducing the quality of the finished blade spraying product and making it difficult to meet the high-precision and standardized spraying production requirements of wind turbine blades. Summary of the Invention

[0003] The purpose of this invention is to provide an AGV specifically designed for barrier environments, in order to solve the problems mentioned in the background art.

[0004] The objective of this invention can be achieved through the following technical solutions: A barrier environment-specific AGV includes a body with multiple air inlets arranged circumferentially around its center on the upper surface of the body. A central tube located in the inner cavity of the body is installed on the side of the multiple air inlets that are close to each other. Multiple branch pipes are arranged circumferentially around the outer edge of the central tube, and a negative pressure module is installed in the branch pipe. An upper ring and a lower ring are respectively arranged symmetrically from top to bottom in the inner cavity of the central tube. A sealing cover 1 is slidably nested in the middle of the upper ring, and a sealing cover 2 is slidably nested in the middle of the lower ring. A lifting rod coaxial with the central tube is fixedly installed between the sealing cover 1 and the sealing cover 2. A circumferentially arranged air hole 1 is opened on the outer wall of the sealing cover 1, and a circumferentially arranged air hole 2 is opened on the outer side of the sealing cover 2. A lifting unit for lifting and lowering control is provided below the lifting rod, wherein the lifting unit is linked with the negative pressure module.

[0005] Preferably, an opening and closing plate is rotatably installed inside the intake pipe. A ring frame that is rotatably connected to the inner cavity of the machine body is provided below multiple intake pipes. The ring frame corresponds to each of the multiple intake pipes and is slidably connected to the inner cavity of the machine body. An electromagnetic groove is provided on the upper end face of the arc-shaped toothed plate. A vertically penetrating and sliding moving rod is provided above the electromagnetic groove and is mounted on the ring frame. An electromagnetic block is provided at the bottom of the moving rod. A top plate is fixedly installed at the end of the moving rod away from the electromagnetic block. A spring is also sleeved on the outside of the moving rod between the top plate and the ring frame. An opening and closing unit is provided above the top plate that is fixed to the outside of the intake pipe and controls the flipping of the opening and closing plate inside the intake pipe so that the central pipe can draw external air into the machine body through the negative pressure module.

[0006] Preferably, the opening and closing unit includes an L-shaped frame. The middle of the transverse section of the L-shaped frame is through-type, and rectangular slots are provided on both sides. A center plate is slidably installed between the two rectangular slots. A hollow slot is provided in the middle of the center plate. A bottom plate fixed to the bottom of the L-shaped frame is provided below the hollow slot. A rotating shaft located inside the hollow slot is rotatably installed on the upper end face of the bottom plate. A steering plate is fixedly installed in the middle of the rotating shaft. A toggle plate fixed to one side of the inner wall of the hollow slot is symmetrically provided on both sides of the steering plate. A lower rod fixed to the opening and closing plate is rotatably installed at the bottom of the transverse section of the L-shaped frame. A pulley mechanism is connected between the lower rod and the rotating shaft. A connecting plate fixed to the center plate is slidably installed in the rectangular slot on one side.

[0007] Preferably, one side of the arc-shaped toothed plate is provided with a rotating rod that is rotatably connected to the inner cavity of the machine body. A lower wheel that meshes with the arc-shaped toothed plate is fixedly installed on the rotating rod. Above the lower wheel is an upper wheel that is fixed to the rotating rod and coaxial with the lower wheel. One side of the upper wheel is meshed with a toothed plate that is slidably connected to the inner cavity of the machine body. One side of the toothed plate is fixedly connected to the top of the connecting plate.

[0008] Preferably, an internal gear ring is fixedly installed on the upper inner side of the ring frame, and a center plate connected to the machine body via a motor is provided on one side of the internal gear ring, the center plate meshing with the internal gear ring.

[0009] Preferably, the negative pressure module includes a displacement rod located inside the branch pipe and perpendicular to the axis of the lifting rod. A piston plate is fixedly installed at the end of the displacement rod near the lifting rod to seal the connection between the branch pipe and the central pipe. A bonding plate is fixedly installed at the end of the displacement rod away from the piston plate to fit the end of the branch pipe away from the central pipe. A traction plate is fixedly installed at the bottom of the bonding plate.

[0010] Preferably, the lifting unit includes a rotating ring that is rotatably connected to the inner cavity of the machine body via an electric slip ring. Multiple push-pull plates are hinged to the outer edge of the rotating ring, and the ends of the multiple push-pull plates away from the rotating ring are respectively hinged to corresponding traction plates.

[0011] Preferably, the center of the rotating ring is provided with a columnar component that is fixed to the bottom end of the lifting rod, the outer edge of the columnar component is provided with a threaded groove, and an inner column that slides within the threaded groove is fixedly installed on the inner side of the rotating ring.

[0012] Preferably, when the lifting unit moves the lifting rod upward, the second sealing cover moves upward to block the second air hole in the lower ring, and the first sealing cover moves upward to move the first air hole out of the upper ring. The negative pressure module generates suction force in the central tube, and then draws external air into the inner cavity of the central tube through multiple air inlet pipes. When the lifting unit moves the lifting rod downward, the second sealing cover moves downward at the same time, so that the first air hole fits against the inner wall of the upper ring. At this time, the air in the air inlet pipe cannot enter the central tube. The piston plate in the negative pressure module moves in the branch pipe, compresses the gas to form a booster thrust, and generates a compressive force in the central tube, thereby assisting the air in the central tube to flow quickly through the second air hole into the machine body for purification.

[0013] Preferably, a filter screen is detachably installed on the top of the air intake pipe, and a purification system is installed in the internal cavity of the machine to purify the air.

[0014] The beneficial effects of this invention are: 1. This invention can automatically switch between two working conditions: negative pressure intake and rapid pressurization exhaust. Unlike traditional ventilation equipment with a single negative pressure intake and natural low-speed exhaust, this invention uses a mechanical linkage structure to create a stable negative pressure to collect air during intake and to generate positive pressure thrust to accelerate airflow during exhaust. This effectively solves the problems of slow airflow, sluggish air circulation, and low purification efficiency of conventional purification equipment. It can quickly replace and purify the air inside the barrier environment, continuously improve the air renewal rate of the sealed barrier space, and meet the high-frequency ventilation requirements of high-precision clean environments.

[0015] 2. This invention adopts a circumferential full-area air intake layout combined with a synchronous transmission adjustment structure, which can realize the synchronous opening and closing of multiple air intakes and precise adjustment of air intake flow. At the same time, it is equipped with an electromagnetic locking structure to fix the air intake opening, effectively avoiding the problems of uneven local air intake and airflow turbulence. During the operation of the equipment, it can always maintain uniform air pressure and airflow circulation without dead corners within the barrier environment, avoiding situations where local cleanliness does not meet the standards or air pressure imbalance occurs. It accurately maintains the cleanliness standard and pressure stability of the barrier's sealed environment, perfectly adapting to high-standard barrier operation scenarios of sterile and dust-free environments.

[0016] 3. This invention adopts a single-source drive integrated linkage design, which synchronously controls the entire process of air circuit opening and closing, negative pressure start and stop, pressure regulation and air intake opening and closing through the core transmission structure. It eliminates the need for multiple independent drive control components, greatly simplifying the overall structure of the equipment and reducing the probability of electrical and mechanical failures. At the same time, the front-mounted independent dustproof structure can intercept impurities in the intake air throughout the process, effectively protecting the internal transmission, pneumatic and purification components, extending the service life of the equipment. The detachable structure facilitates daily cleaning and maintenance. While ensuring stable operation of the equipment around the clock, it significantly reduces the energy consumption of the equipment and the later operation and maintenance costs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure between the multiple air intake pipes of the present invention; Figure 3 This is a bottom view schematic diagram of multiple air intake pipes of the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure between the intake pipe and the ring frame of the present invention; Figure 5 This is a schematic diagram of the opening and closing unit structure of the present invention; Figure 6 This is a schematic diagram of the structure between the rotating shaft and the lower rod of the present invention; Figure 7 This is a schematic diagram of the external structure of the branch pipe of the present invention; Figure 8 This is a schematic diagram of the branch pipe cross-section structure of the present invention; Figure 9 This is a schematic diagram of the lifting unit structure of the present invention.

[0019] The attached figures are labeled as follows: 1. Body; 20. Ring frame; 201. Moving rod; 202. Electromagnetic block; 203. Top plate; 21. Intake pipe; 211. Filter screen; 212. Opening and closing plate; 213. Lower rod; 22. Arc-shaped toothed plate; 221. Electromagnetic slot; 23. L-shaped frame; 231. Rectangular slot; 232. Connecting plate; 24. Center plate; 240. Internal gear ring; 241. Hollow slot; 242. Bottom plate; 243. Rotating shaft; 244. Actuating plate; 245. Steering plate; 25. Rotating... 251. Lower wheel; 252. Upper wheel; 253. Toothed plate; 3. Central tube; 30. Branch tube; 301. Displacement rod; 302. Piston plate; 303. Adhesive plate; 304. Traction plate; 31. Upper ring; 311. Sealing cover one; 312. Air hole one; 32. Lower ring; 321. Sealing cover two; 322. Air hole two; 33. Lifting rod; 331. Column part; 332. Threaded groove; 34. Rotary ring; 341. Internal column; 342. Push-pull plate. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figure 1-9 As shown, this invention is a special AGV for barrier environments, including a body 1. Multiple air inlet pipes 21 are arranged circumferentially around the center of the upper surface of the body 1. A central pipe 3 located within the inner cavity of the body 1 is installed on the side of the multiple air inlet pipes 21 that are close together. Multiple branch pipes 30 are arranged circumferentially around the outer edge of the central pipe 3. A negative pressure module is installed within each branch pipe 30. An upper ring 31 and a lower ring 32 are respectively arranged from top to bottom within the inner cavity of the central pipe 3. The upper ring 31 and the lower ring 32 are arranged symmetrically vertically. A sealing cover 311 is slidably nested in the middle of the 31 ring, and a sealing cover 321 is slidably nested in the middle of the lower ring 32 ring. A lifting rod 33 coaxial with the central tube 3 is fixedly installed between the sealing cover 321 and the sealing cover 311. A circumferentially arranged air hole 312 is opened on the outer wall of the sealing cover 311, and a circumferentially arranged air hole 322 is opened on the outer side of the sealing cover 321. A lifting unit for lifting and lowering control is provided below the lifting rod 33, wherein the lifting unit is linked with the negative pressure module.

[0022] Multiple air intake pipes 21 arranged circumferentially on the upper surface of the unit 1 serve as the core air intake channels. This circumferential arrangement ensures uniform air intake from all directions, avoiding dead zones caused by unilateral intake and guaranteeing seamless air circulation within the barrier environment. A detachable filter 211 at the top of the air intake pipes 21 effectively intercepts dust, particles, impurities, and other pollutants before external air enters the equipment's interior, preventing solid debris from entering the unit 1 and protecting subsequent negative pressure modules, purification systems, and various transmission structures from contamination and wear. The detachable design also facilitates regular removal, cleaning, and replacement of the filter 211, continuously ensuring air cleanliness and meeting the high cleanliness requirements of the barrier environment. The purification system within the unit 1 deeply purifies the intake air, further removing microorganisms, fine particulate matter, and harmful impurities, achieving circulating purification of the air within the barrier environment and maintaining environmental cleanliness standards.

[0023] The central pipe 3, which is connected to the inner side of multiple air intake pipes 21, is the core cavity for air collection and guidance. Multiple branch pipes 30 arranged circumferentially around the outer edge of the central pipe 3 enable separate connection between the central pipe 3 and the negative pressure module, ensuring uniform distribution of negative pressure. The upper ring 31 and lower ring 32, which are symmetrically arranged in the inner cavity of the central pipe 3, together with the synchronously lifting and lowering sealing cover 311, sealing cover 321, and coaxial lifting rod 33, constitute a dynamically switchable airflow interruption and air pressure regulation structure.

[0024] The air vents 312 and 322 on the outer walls of the sealing cover 311 and the sealing cover 321, respectively, serve as airflow channels. The opening and closing of the two air vents can be switched by the up and down movement of the lifting rod 33: When the lifting rod 33 moves upward, the sealing cover 321 moves upward to block the lower ring 32 and close the air vent 322. At the same time, the sealing cover 311 moves upward, causing the air vent 312 to move out of the upper ring 31, opening the air intake passage between the air intake pipe 21 and the central pipe 3. When the lifting rod 33 moves downward, the air vent 312 fits against the inner wall of the upper ring 31 to block the upper air intake, and the air vent 322 unlocks, switching to the passage for the central pipe 3 to exhaust into the inner cavity of the machine body 1. The intake and exhaust conditions are precisely switched through the mechanical structure, without the need for additional electronically controlled valves, resulting in stronger structural stability.

[0025] An opening and closing plate 212 is rotatably installed inside the air intake pipe 21. A ring frame 20 is rotatably connected to the inner cavity of the body 1 below multiple air intake pipes 21. The ring frame 20 corresponds to each of the multiple air intake pipes 21 and is slidably connected to the inner cavity of the body 1. An electromagnetic groove 221 is opened on the upper end surface of the arc-shaped toothed plate 22. A vertically penetrating moving rod 201 is provided above the electromagnetic groove 221 and slides on the ring frame 20. An electromagnetic block 202 is provided at the bottom of the moving rod 201. A top plate 203 is fixedly installed at the end of the moving rod 201 away from the electromagnetic block 202. A spring is also sleeved on the outside of the moving rod 201 between the top plate 203 and the ring frame 20. An opening and closing unit is fixed to the outside of the air intake pipe 21 above the top plate 203 and controls the flipping of the opening and closing plate 212 inside the air intake pipe 21 so that the central pipe 3 can draw external air into the body 1 through the negative pressure module.

[0026] The opening and closing unit includes an L-shaped frame 23. The middle of the transverse section of the L-shaped frame 23 is through, and rectangular slots 231 are provided on both sides. A center plate 24 is slidably installed between the two rectangular slots 231. A hollow slot 241 is provided in the middle of the center plate 24. A bottom plate 242 fixed to the bottom of the L-shaped frame 23 is provided below the hollow slot 241. A rotating shaft 243 located inside the hollow slot 241 is rotatably installed on the upper end face of the bottom plate 242. A steering plate 245 is fixedly installed in the middle of the rotating shaft 243. A toggle plate 244 fixed to one side of the inner wall of the hollow slot 241 is symmetrically provided on both sides of the steering plate 245. A lower rod 213 fixed to the opening and closing plate 212 is rotatably installed at the bottom of the transverse section of the L-shaped frame 23. A pulley mechanism is connected between the lower rod 213 and the rotating shaft 243. A connecting plate 232 fixed to the center plate 24 is slidably installed in the rectangular slot 231 on one side.

[0027] The L-shaped frame 23, center plate 24, rotating shaft 243, steering plate 245, actuating plate 244, pulley mechanism, and lower rod 213 of the opening and closing unit constitute a flipping transmission structure. The sliding displacement of the center plate 24 in the rectangular groove 231 of the L-shaped frame 23 drives the rotating shaft 243 to rotate, and the lower rod 213 is rotated through the pulley mechanism. The flipping angle of the opening and closing plate 212 inside the air intake pipe 21 is precisely controlled. The air intake flow can be adjusted according to the needs of the barrier environment to achieve adaptive adjustment of small flow precise air exchange and large flow rapid air exchange.

[0028] A rotating rod 25 is provided on one side of the arc-shaped toothed plate 22 and is rotatably connected to the inner cavity of the machine body 1. A lower gear 251 that meshes with the arc-shaped toothed plate 22 is fixedly installed on the rotating rod 25. An upper gear 252 that is fixed to the rotating rod 25 and coaxial with the lower gear 251 is provided above the lower gear 251. A toothed plate 253 that is slidably connected to the inner cavity of the machine body 1 is meshed on one side of the upper gear 252. One side of the toothed plate 253 is fixedly connected to the top of the connecting plate 232.

[0029] The gear transmission structure, consisting of a rotating rod 25, a lower gear 251, an upper gear 252, and a gear plate 253, combined with the internal gear ring 240 inside the ring frame 20 and a matching drive motor, enables synchronous control of the entire air intake structure. The gear plate 253 is fixedly connected to the connecting plate 232 of the opening and closing unit. The lower gear 251 meshes with the arc-shaped gear plate 22, and the upper gear 252 meshes with the gear plate 253, forming a multi-stage gear transmission link. This allows for precise transmission of power to each group of opening and closing units, enabling synchronous rotation and flow adjustment of the opening and closing plates 212 of all air intake pipes 21. Simultaneously, the motor drives the internal gear ring 240 to rotate, which in turn causes the entire ring frame 20 to undergo circumferential fine-tuning, adapting to the circumferential air intake layout of the machine body 1. This ensures uniform and consistent airflow across multiple channels, completely avoiding the problem of uneven local air pressure and cleanliness in the barrier environment caused by differences in single-pipe air intake.

[0030] An internal gear ring 240 is fixedly installed on the upper inner side of the ring frame 20. A center plate 24 is provided on one side of the internal gear ring 240 and connected to the machine body 1 through a motor. The center plate 24 meshes with the internal gear ring 240.

[0031] The negative pressure module includes a displacement rod 301 located inside the branch pipe 30 and perpendicular to the axis of the lifting rod 33. A piston plate 302 is fixedly installed at the end of the displacement rod 301 near the lifting rod 33 to seal the connection between the branch pipe 30 and the central pipe 3. A bonding plate 303 is fixedly installed at the end of the displacement rod 301 away from the piston plate 302 to fit the end of the branch pipe 30 away from the central pipe 3. A traction plate 304 is fixedly installed at the bottom of the bonding plate 303.

[0032] The negative pressure module inside the branch pipe 30 is the power core for the airflow circulation of the equipment. Its core structure includes a displacement rod 301, a piston plate 302, a bonding plate 303, and a traction plate 304. The displacement rod 301 is arranged perpendicular to the axis of the lifting rod 33, which can achieve precise horizontal displacement and drive the end piston plate 302 and the bonding plate 303 to move synchronously.

[0033] Under intake conditions, the piston plate 302 disengages from the connection between the branch pipe 30 and the central pipe 3, and the fitting plate 303 disengages from the end of the branch pipe 30, so that the negative pressure module forms a stable negative pressure suction inside the central pipe 3. In conjunction with the opened air hole 312, the ambient air of the external barrier is quickly drawn into the equipment through the intake pipe 21 and the central pipe 3 to complete the air collection. Under the condition of exhaust pressurization, the lifting unit linkage traction plate 304 pulls the displacement rod 301 to reset, and the piston plate 302 slides to the connection between the branch pipe 30 and the central pipe 3, blocking the channel. At the same time, the fitting plate 303 fits against the end of the branch pipe 30, squeezing the gas retained inside the branch pipe 30 to form a pressurization thrust, which forms a positive compression force on the air inside the central pipe 3. This greatly increases the flow rate of the air inside the central pipe 3 through the second air hole 322 into the inner cavity of the machine body 1, realizing the dual-mode switching of negative pressure intake and pressurized rapid exhaust. This effectively solves the problems of slow airflow and low ventilation efficiency of conventional ventilation equipment, and improves the air circulation and purification efficiency of the barrier environment.

[0034] The lifting unit includes a rotating ring 34 that is rotatably connected to the inner cavity of the machine body 1 via an electric slip ring. Multiple push-pull plates 342 are hinged to the outer edge of the rotating ring 34. The ends of the multiple push-pull plates 342 that are away from the rotating ring 34 are respectively hinged to the corresponding traction plates 304.

[0035] The center of the rotating ring 34 is provided with a columnar component 331 that is fixed to the bottom end of the lifting rod 33. The outer edge of the columnar component 331 is provided with a threaded groove 332. An internal column 341 that slides in the threaded groove 332 is fixedly installed on the inner side of the rotating ring 34.

[0036] When the lifting unit moves the lifting rod 33 upward, the second sealing cover 321 moves upward, causing the lower ring 32 to block the second air hole 322. The first sealing cover 311 moves upward, causing the first air hole 312 to move out of the upper ring 31. The negative pressure module generates suction force in the central tube 3, and then draws external air into the inner cavity of the central tube 3 through multiple air inlet pipes 21. When the lifting unit moves the lifting rod 33 to move the second sealing cover 321 downward, the first sealing cover 311 moves downward at the same time, causing the first air hole 312 to fit against the inner wall of the upper ring 31. At this time, the air in the air inlet pipe 21 cannot enter the central tube 3. The piston plate 302 in the negative pressure module moves in the branch pipe 30, compressing the gas to form a boosting thrust, generating a compressive force in the central tube 3, and thus assisting the air in the central tube 3 to flow quickly through the second air hole 322 into the machine body 1 for purification.

[0037] The lifting unit, composed of a rotating ring 34, a push-pull plate 342, a column-shaped component 331, a threaded groove 332, and an internal column 341, realizes the mechanical linkage control between the negative pressure module and the lifting rod 33, eliminating the need for multiple independent drive components and reducing equipment energy consumption and failure probability. The rotating ring 34 is rotatably connected to the inner cavity of the body 1 via an electric slip ring, enabling stable circumferential rotation. The built-in column 341 fixed inside the rotating ring 34 slides and nests inside the threaded groove 332 of the column-shaped component 331. When the rotating ring 34 rotates, the circumferential motion is converted into the linear lifting motion of the column-shaped component 331 through the threaded transmission cooperation between the threaded groove 332 and the built-in column 341. This precisely drives the lifting rod 33 fixed at the bottom to move up and down, achieving precise opening and closing positioning of the sealing cover assembly. At the same time, multiple push-pull plates 342 hinged to the outer edge of the rotating ring 34 are respectively hinged to the traction plate 304 of the corresponding negative pressure module. While the rotating ring 34 rotates and controls the displacement of the lifting rod 33, it simultaneously drives the negative pressure modules in all branch pipes 30 to start and stop synchronously and move synchronously. This achieves integrated linkage of opening and closing of the sealing structure and switching of air pressure and power, ensuring the consistency of negative pressure and pressurization actions of multiple branch pipes 30, avoiding single-path airflow turbulence, and maintaining stable air pressure in the barrier environment.

[0038] A filter 211 is detachably installed on the top of the air intake pipe 21, and a purification system for purifying the air is provided in the inner cavity of the body 1.

[0039] The opening and closing plate 212, which is rotatably mounted inside the intake pipe 21, is an auxiliary structure for the single-pipe intake on / off. Together with the ring frame 20, the arc-shaped toothed plate 22, the opening and closing unit, and the transmission assembly, it enables the synchronous opening and closing of multiple intake pipes 21 and precise air control. The ring frame 20 is slidably installed inside the body 1 and corresponds one-to-one with multiple arc-shaped toothed plates 22. The electromagnetic groove 221 on the upper surface of the arc-shaped toothed plate 22, the vertically sliding moving rod 201, the electromagnetic block 202 and the spring, and the top plate 203 constitute an electromagnetic locking structure. Through electromagnetic adsorption and spring reset, the moving rod 201 can be automatically extended and positioned, and the sliding position of the arc-shaped toothed plate 22 can be locked to ensure that the opening angle of the opening and closing plate 212 is fixed and to prevent airflow swaying.

[0040] Working principle: When the equipment is in standby mode, the lifting rod 33 is in the low position, the sealing cover 311 seals the upper ring 31 and the air hole 312 is closed, blocking the air intake passage between the air intake pipe 21 and the central pipe 3; the sealing cover 321 is fully open, the air hole 322 is in the conductive state, at the same time the piston plate 302 of the negative pressure module disengages from the connection port between the branch pipe 30 and the central pipe 3, the fitting plate 303 seals the outer end of the branch pipe 30, and the opening and closing plates 212 inside each air intake pipe 21 are in the closed state, with no airflow in the whole machine, providing a stable initial working condition for subsequent ventilation operations. The filter 211 mounted on the top of the air intake pipe 21 is fully open. When the process is in a protective state, it can intercept and protect against air intake impurities at any time. After the equipment starts the air exchange operation, the drive motor in the inner cavity of the machine body 1 drives the internal gear ring 240 to rotate, which drives the ring frame 20 to slide and fine adjust in the inner cavity of the machine body 1, realizing synchronous control of the entire air intake structure. The ring frame 20 drives the displacement of each set of arc-shaped toothed plates 22. The arc-shaped toothed plates 22 mesh with the lower wheel 251 for transmission, and drive the coaxial upper wheel 252 to rotate synchronously through the rotating rod 25. The upper wheel 252 meshes and drives the toothed plate 253 to slide vertically. The toothed plate 253 is linked to the connecting plate 232 to move synchronously, which drives the center plate 24 to move laterally along the rectangular groove 231 of the L-shaped frame 23. During the sliding process of the center plate 24, the actuating plate 244, in conjunction with the hollow groove 241 for limiting and guiding, drives the rotating shaft 243 to rotate. This, through the belt pulley mechanism, drives the lower rod 213 to rotate, precisely controlling the opening and closing plate 212 inside the air intake pipe 21 to flip open. During operation, the electromagnetic groove 221 is energized to attract the electromagnetic block 202, causing the moving rod 201 to slide vertically and compress the spring, thereby achieving the sliding positioning and locking of the arc-shaped toothed plate 22 and fixing the opening angle of the opening and closing plate 212. This allows for precise adjustment of the air intake flow of a single air intake pipe 21, enabling multiple sets of air intake pipes 21 to open and close synchronously and uniformly, avoiding local airflow differences. After the intake structure completes the opening and closing adjustment, the lifting unit starts operation. The inner cavity of the machine body 1 is driven by the electric slip ring to make the rotating ring 34 rotate in a circular motion. The built-in column 341 fixed on the inner side of the rotating ring 34 slides along the threaded groove 332 of the column part 331, converting the circular motion into linear lifting power, pushing the column part 331 and the lifting rod 33 to move upward synchronously. During the upward movement of the lifting rod 33, the top sealing cover 1 311 and the bottom sealing cover 2 321 are moved upward as a whole: the sealing cover 2 321 is embedded in the lower ring 32, completely blocking the air hole 2 322, blocking the exhaust passage from the central tube 3 to the inner cavity of the machine body 1;Simultaneously, the sealing cap 311 moves upward, causing the air vent 312 to completely move out of the upper ring 31, opening the communication channel between the air inlet pipe 21 and the central pipe 3. At the same time, as the rotating ring 34 rotates, it synchronously pulls the traction plates 304 of each negative pressure module through the multiple sets of push-pull plates 342 hinged to the outer edge, causing the displacement rod 301 to move horizontally, so that the piston plate 302 completely disengages from the connection between the branch pipe 30 and the central pipe 3, and the bonding plate 303 disengages from the outer end of the branch pipe 303. All branch pipes 30 are simultaneously connected, forming a stable negative pressure suction inside the central pipe 3. The external air in the barrier environment is filtered of impurities through the air inlet pipe 21 and the filter screen 211, and then flows into the inner cavity of the central pipe 3 through the air vent 312, completing the negative pressure collection of clean air. After the air collection inside the central pipe 3 is completed, the lifting unit drives the rotating ring 34 to rotate in the opposite direction. Through the transmission cooperation between the threaded groove 332 and the built-in column 341, the lifting unit is driven to move. As rod 33 is reset downwards, sealing cover 311 moves down and resets, and vent 312 re-attaches to the inner wall of upper ring 31, completely blocking the air intake passage and preventing external air from entering. Sealing cover 321 moves down simultaneously, and vent 322 is fully unlocked and opened, opening the exhaust passage between central tube 3 and the inner cavity of body 1. As lifting rod 33 moves down, push-pull plate 342 resets with rotating ring 34, pushing traction plate 304 to move in the opposite direction, causing displacement rod 301 to slide and reset, so that piston plate 302 blocks the connection port between branch pipe 30 and central tube 3, cutting off negative pressure air passage. At the same time, contact plate 303 contacts the outer end of branch pipe 30, squeezing the air inside branch pipe 30 to form positive pressure thrust. This pressure force acts on the air accumulated inside central tube 3, greatly increasing airflow pressure and velocity, forcing the air inside central tube 3 to rush into the inner cavity of body 1 through vent 322. Finally, the high-speed airflow enters the inner cavity of the machine body 1 and undergoes deep purification by the built-in purification system to remove microorganisms, fine particulate matter and harmful impurities from the air, completing the air purification cycle. The entire operation solves the defects of slow airflow and low purification efficiency of conventional ventilation equipment by switching between negative pressure air collection and pressurized exhaust.

[0041] The above description is merely an example and illustration of the concept of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the concept of the invention or exceed the scope defined in the claims, they should all fall within the protection scope of the present invention.

Claims

1. A special AGV for barrier environments, comprising a body (1), characterized in that, The upper end face of the body (1) is provided with multiple air inlet pipes (21) arranged circumferentially around its center. The sides of the multiple air inlet pipes (21) that are close to each other are connected to a central pipe (3) located in the inner cavity of the body (1). Multiple branch pipes (30) are arranged circumferentially around the outer edge of the central pipe (3). A negative pressure module is provided in the branch pipe (30). The inner cavity of the central pipe (3) is provided with an upper ring (31) and a lower ring (32) from top to bottom. The upper ring (31) and the lower ring (32) are arranged symmetrically between them. The middle part of the upper ring (31) is slidably nested. There is a sealing cover 1 (311), and a sealing cover 2 (321) is slidably nested in the middle of the lower ring (32). A lifting rod (33) coaxial with the central tube (3) is fixedly installed between the sealing cover 2 (321) and the sealing cover 1 (311). A circumferentially arranged air hole 1 (312) is opened on the outer wall of the sealing cover 1 (311), and a circumferentially arranged air hole 2 (322) is opened on the outside of the sealing cover 2 (321). A lifting unit for lifting and lowering control is provided below the lifting rod (33), wherein the lifting unit is linked with the negative pressure module.

2. The AGV for barrier environments according to claim 1, characterized in that, The air intake pipe (21) is rotatably mounted with an opening and closing plate (212). Below the multiple air intake pipes (21), there is a ring frame (20) rotatably connected to the inner cavity of the body (1). The ring frame (20) corresponds one-to-one with the multiple air intake pipes (21) and is slidably connected to the inner cavity of the body (1). The upper end face of the arc-shaped toothed plate (22) is provided with an electromagnetic groove (221). Above the electromagnetic groove (221), there is a vertically penetrating moving rod (201) that slides on the ring frame (20). The bottom of the moving rod (201) is provided with There is an electromagnetic block (202), and a top plate (203) is fixedly installed on one end of the moving rod (201) away from the electromagnetic block (202). A spring is also sleeved on the outside of the moving rod (201) between the top plate (203) and the ring frame (20). Above the top plate (203) is a plate fixed to the outside of the air inlet pipe (21) and the opening and closing plate (212) is flipped in the air inlet pipe (21) so that the central tube (3) can draw the outside air into the opening and closing unit inside the machine body (1) through the negative pressure module.

3. The AGV for barrier environments according to claim 2, characterized in that, The opening and closing unit includes an L-shaped frame (23). The middle of the transverse section of the L-shaped frame (23) is through-type, and rectangular slots (231) are provided on both sides. A center plate (24) is slidably installed between the two rectangular slots (231). A hollow slot (241) is provided in the middle of the center plate (24). A bottom plate (242) fixed to the bottom of the L-shaped frame (23) is provided below the hollow slot (241). A rotating shaft (24) located inside the hollow slot (241) is rotatably installed on the upper end face of the bottom plate (242). 3) A steering plate (245) is fixedly installed in the middle of the rotating shaft (243). A toggle plate (244) is symmetrically provided on both sides of the steering plate (245) and fixed to one side of the inner wall of the hollow groove (241). A lower rod (213) fixed to the opening and closing plate (212) is rotatably installed at the bottom of the transverse section of the L-shaped frame (23). A pulley mechanism is connected between the lower rod (213) and the rotating shaft (243). A connecting plate (232) fixed to the center plate (24) is slidably installed in the rectangular groove (231) on one side.

4. The AGV for barrier environments according to claim 3, characterized in that, The arc-shaped toothed plate (22) has a rotating rod (25) on one side that is rotatably connected to the inner cavity of the machine body (1). A lower wheel (251) that meshes with the arc-shaped toothed plate (22) is fixedly installed on the rotating rod (25). An upper wheel (252) that is fixed to the rotating rod (25) and coaxial with the lower wheel (251) is provided above the lower wheel (251). A toothed plate (253) that is slidably connected to the inner cavity of the machine body (1) is meshed on one side of the upper wheel (252). One side of the toothed plate (253) is fixedly connected to the top of the connecting plate (232).

5. The AGV for barrier environments according to claim 4, characterized in that, An internal gear ring (240) is fixedly installed on the upper inner side of the ring frame (20). A center plate (24) is provided on one side of the internal gear ring (240) and connected to the machine body (1) via a motor. The center plate (24) meshes with the internal gear ring (240).

6. The AGV for barrier environments according to claim 1, characterized in that, The negative pressure module includes a displacement rod (301) located inside the branch pipe (30) and perpendicular to the axis of the lifting rod (33). A piston plate (302) is fixedly installed at the end of the displacement rod (301) near the lifting rod (33) to seal the connection between the branch pipe (30) and the central pipe (3). A bonding plate (303) is fixedly installed at the end of the displacement rod (301) away from the piston plate (302) to fit the end of the branch pipe (30) away from the central pipe (3). A traction plate (304) is fixedly installed at the bottom of the bonding plate (303).

7. The AGV for barrier environments according to claim 6, characterized in that, The lifting unit includes a rotating ring (34) that is rotatably connected to the inner cavity of the machine body (1) via an electric slip ring. Multiple push-pull plates (342) are hinged to the outer edge of the rotating ring (34). The ends of the multiple push-pull plates (342) away from the rotating ring (34) are respectively hinged to the corresponding traction plates (304).

8. The AGV for barrier environments according to claim 7, characterized in that, The center of the rotating ring (34) is provided with a column (331) fixed to the bottom end of the lifting rod (33). The outer edge of the column (331) is provided with a threaded groove (332). The inner side of the rotating ring (34) is fixedly installed with an internal column (341) that slides in the threaded groove (332).

9. The AGV for barrier environments according to claim 8, characterized in that, When the lifting unit moves the lifting rod (33) upward, the second sealing cover (321) moves upward, causing the lower ring (32) to block the second air hole (322). The first sealing cover (311) moves upward, causing the first air hole (312) to move out of the upper ring (31). The negative pressure module generates suction force in the central tube (3), thereby drawing external air into the inner cavity of the central tube (3) through multiple air inlet pipes (21). When the lifting unit moves the lifting rod (33) to move the second sealing cover (321) upward, the second sealing cover (321) will move upward. As the air in the inlet pipe (21) moves downward, the sealing cover (311) moves downward simultaneously, causing the air hole (312) to fit against the inner wall of the upper ring (31). At this time, the air in the inlet pipe (21) cannot enter the central pipe (3). The piston plate (302) in the negative pressure module moves within the branch pipe (30), compressing the gas to form a boosting thrust, generating a compressive force within the central pipe (3), thereby assisting the air in the central pipe (3) to quickly flow through the air hole (322) into the body (1) for purification.

10. The AGV for barrier environments according to claim 9, characterized in that, The top of the air intake pipe (21) is detachably fitted with a filter screen (211), and the inner cavity of the body (1) is equipped with a purification system for purifying the air.

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