A kind of explosion-proof RGV trolley for coating workshop of transporting material

Abstract

The present application belongs to the technical field of rail automatic guided vehicle, and discloses a painting workshop explosion-proof RGV trolley for transporting materials, which comprises an RGV trolley body, a mounting plate fixedly installed on the RGV trolley body, and a side guiding assembly. The side guiding assembly, the side clamping assembly and the blocking assembly are cooperated to protect the materials in the painting workshop at multiple angles, wherein the side clamping assembly is capable of closely adhering to the arc surface of paint buckets of different specifications through the rotatable clamping plate and the ratchet and pawl mechanism, and cooperates with the blocking assembly to form multiple-angle limiting of side clamping and front / rear blocking. The side guiding assembly synchronously realizes stable guiding and limiting in the left and right directions. The three components together constitute omnidirectional protection, which not only accurately solves the problem that the cylindrical paint bucket is easily longitudinally tilted due to centrifugal force or sudden stop, but also realizes stable transfer of non-barrel-shaped materials, is suitable for various specifications of paint buckets, and does not need manual replacement of clamps to adapt to the actual demand of mixed transportation of various specifications of materials in the painting workshop.

Description

Technical Field

[0001] This invention belongs to the field of track-type automated guided vehicles (AGVs), specifically an explosion-proof RGV trolley for transporting materials in a painting workshop. Background Technology

[0002] As the automotive manufacturing industry upgrades towards automation and intelligence, the painting workshop, as a core process in automobile (especially bus) production, undertakes key operations such as pretreatment, spraying, and drying of the vehicle body surface. The safety, stability, and efficiency of its material transfer directly affect the production rhythm and product quality of the entire vehicle. The types of materials transferred in the painting workshop are complex and diverse, including cylindrical paint buckets (such as 18L small buckets and 200L large buckets) containing solvent-based paints and thinners, as well as non-bucket-shaped flat materials such as bus body parts and tooling pallets. At the same time, due to the volatilization of flammable components such as toluene and xylene in solvent-based paints, the workshop environment is in an explosive mixture for a long time, which places stringent requirements on the explosion-proof performance of the transfer equipment.

[0003] RGVs (Automated Guided Vehicles) have gradually replaced manual forklifts and become the mainstream equipment for material handling in painting workshops due to their advantages of fixed paths, high load-bearing capacity, and high operational precision. However, existing RGVs still have many technical defects that need to be addressed when adapting to the specific needs of painting workshops. One of the core materials to be transferred in existing painting workshops is cylindrical paint buckets. Their curved surfaces make it difficult for existing RGV fixing methods to form stable limits. RGVs with flat conveyor or fixed side guard designs can only restrict the lateral sliding of paint buckets and cannot resist the inertial impact during the transfer process. Paint buckets are prone to longitudinal tilting due to centrifugal force or inertia, resulting in solvent leakage. This not only wastes materials but also exacerbates safety hazards in the workshop. Even if some RGVs claim to have multi-material adaptability, the clamping mechanism for flat materials cannot adapt to the curved surface of paint buckets. The clamping mechanism for paint buckets is prone to local pressure concentration when clamping flat materials, resulting in workpiece deformation or damage to auxiliary material boxes. Summary of the Invention

[0004] To address the problems mentioned in the background section, this invention provides an explosion-proof RGV trolley for transporting materials in a painting workshop, comprising an RGV body, on which an mounting plate is fixedly installed, and further comprising... Side guide assemblies are disposed on both sides of the mounting plate to guide the material, allowing it to slide quickly out of the designated area and preventing the material from moving out from the left / right side; The side guide assembly includes a roller, which is movably connected to a mounting plate. Two side mounting guide frames are mounted on the mounting plate, and a fixing rod is connected inside each of the two side mounting guide frames. The fixing rod is movably connected inside the mounting plate. A side clamp assembly, which is mounted on the mounting plate, is used to limit the paint bucket and prevent it from moving out; A blocking assembly, which is disposed on a mounting plate, is used to block the paint bucket from being moved out from the front / back. The blocking assembly includes a blocking frame, with round and square rods connected to both sides of the blocking frame. The round and square rods are movably connected to a mounting plate, and a reduction motor is connected to the round and square rods. The reduction motor is fixedly installed on the mounting plate. A side limiting component is installed on the blocking frame, which is used to restrain and limit other transported materials.

[0005] Preferably, the side clamp assembly includes a storage slot formed on a mounting plate. A retaining plate is rotatably connected to the storage slot via a support plate. A drive motor is fixedly installed inside the retaining plate and connected to the retaining plate. Ratchets are connected to both sides of the retaining plate. A limiting plate is connected inside the storage slot. A pawl is rotatably connected inside the limiting plate and engages with the ratchet. A retaining spring is connected to the pawl and connected to the inner wall of the storage slot. The assembly also includes a control component that controls the engagement of the pawl with the ratchet.

[0006] Preferably, the control component includes a connecting block connected to a ratchet, and a control rod is slidably connected inside the limiting plate, the control rod being connected to the connecting block.

[0007] Preferably, the side limiting member includes a hidden groove, which is formed on the blocking frame. A fixed plate is connected inside the hidden groove, and an electric push rod is fixedly installed on the fixed plate. A push plate is connected to the telescopic end of the electric push rod. A central rod is connected inside the hidden groove, and a rotating plate is movably connected to the central rod. A stabilizing rod is connected inside the hidden groove, and a toggle plate is sleeved on the stabilizing rod. The toggle plate is movably connected to the rotating plate.

[0008] Preferably, a friction pad is connected to the push plate, and a clamping pad is connected to the actuation plate.

[0009] Preferably, a linkage adjustment component is slidably connected to the round-square rod. The linkage adjustment component includes a sliding bevel gear, which is slidably connected to the round-square rod. A fixed bevel gear is connected to the fixed rod. The sliding bevel gear slides and adjusts on the round-square rod through an elastic fixed pusher.

[0010] Preferably, the elastic fixing pusher includes an adjusting sleeve, which is threadedly connected to the round square rod and contacts the sliding bevel gear. A fixing ring is connected to the round square rod, and a pushing spring is connected to the fixing ring, which contacts the sliding bevel gear.

[0011] Preferably, a retaining ring is connected to the round rod, and the retaining ring is in contact with the sliding bevel gear.

[0012] Preferably, a side guide roller is movably connected to the side mounting guide frame, and a zone guide roller is movably connected to the blocking frame.

[0013] Preferably, pressure sensors are fixedly installed on both the toggle plate and the push plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention provides multi-angle limiting protection for materials in the painting workshop through the coordinated operation of a side guide assembly, a side clamp assembly, and a blocking assembly. The side clamp assembly, through a rotatable clamping plate and a ratchet and pawl mechanism, can closely fit the curved surface of paint buckets of different sizes. Together with the blocking assembly, it forms multi-angle limiting by side clamping and front / rear blocking. The side guide assembly simultaneously achieves stable guiding and limiting in the left and right directions. The three components together constitute omnidirectional protection, which not only accurately solves the problem of cylindrical paint buckets easily tipping over due to centrifugal force or sudden stops, but also realizes the stable transfer of non-bucket-shaped materials. It is compatible with paint buckets of various sizes and does not require manual replacement of clamps, thus meeting the actual needs of mixed transportation of multiple sizes of materials in the painting workshop.

[0015] Furthermore, the side guide assembly and the blocking assembly form four-sided blocking in the left and right and front and back directions, respectively. Together with the diagonal clamping design of the side clamping assembly, they form an omnidirectional limiting system. Regardless of whether the material being transported is barrel-shaped, flat, or other irregularly shaped, it can comprehensively limit displacement from four dimensions, effectively avoiding the risk of materials falling from the side or front and rear ends during the transport process, especially in scenarios such as turning and sudden stops. At the same time, the side limiting components on the blocking assembly have dual adaptability. They can accurately clamp vertically placed barrel-shaped materials to further enhance longitudinal anti-tipping stability, and can also fully clamp flat materials and irregularly shaped workpieces through the unfolding action. This allows for the integrated transport of multiple types of materials without the need to change special fixtures, adapting to the mixed transport needs of paint buckets, workpiece pallets, and auxiliary material boxes in the painting workshop, and significantly improving the production cycle. The side guide assembly and the blocking assembly can be flexibly adjusted in terms of unfolding angle through linkage adjustment. This design breaks through the limitation of the fixed angle of the existing RGV guide and blocking structure. For irregularly shaped materials, such as tooling with protrusions, spraying parts with irregular contours, or mixed materials of multiple specifications, such as the combination of L small buckets and L large buckets placed at the same time, the semi-unfolded state, which is not 90 degrees, can fit the irregular contour of the material by tilting the angle, avoiding the jamming or limit failure of the fixed right angle structure on irregularly shaped materials. This ensures that all kinds of materials can be stably limited during mixed transportation. At the same time, the side guide assembly and the blocking assembly in the semi-unfolded state extend to the outside of the mounting plate, which can temporarily expand the material placement area, meet the needs of temporary transfer of multiple batches of small batches of materials in the workshop, reduce the number of round trips in a single transfer, and further improve the transfer efficiency.

[0016] Furthermore, the linkage adjustment component adopts a manual operation design. Relying on the cooperation of sliding bevel gear, fixed bevel gear, adjustment sleeve, and push spring, it achieves both adjustment precision and ease of operation: by rotating the adjustment sleeve on the round square rod, the sliding bevel gear can be pushed to slide along the round square rod and engage with the fixed bevel gear. With the help of the push spring on the fixed ring, the engagement state is elastically pushed out, thereby controlling the engagement state of the sliding bevel gear and the fixed bevel gear. It can independently and simultaneously deploy one blocking frame, or simultaneously deploy one blocking frame and the corresponding side-mounted guide frame, adapting to different unloading direction requirements. When the material is unloaded, there is no need to adjust the overall position of the RGV vehicle body. The corresponding side limit structure can be opened by manual adjustment. It is suitable for the rapid production changeover requirements of multiple workstations and multiple unloading directions in the painting workshop, and is especially suitable for flexible transfer scenarios with small batches and multiple shipments. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention; Figure 2 This is an exploded perspective view of the mounting plate and side clamp assembly of the present invention; Figure 3 This is a three-dimensional schematic diagram of the side limiting member of the present invention; Figure 4 This is a front view schematic diagram of the side limiting member of the present invention; Figure 5 This is a three-dimensional schematic diagram of the card plate and mounting plate of the present invention; Figure 6 This is a three-dimensional schematic diagram of the side clamp assembly of the present invention; Figure 7 This is a three-dimensional cross-sectional view of the ratchet of the present invention; Figure 8 This is a three-dimensional schematic diagram of the linkage adjustment component of the present invention; Figure 9This is a three-dimensional exploded view of the linkage adjustment component of the present invention. In the figure: 1. RGV vehicle body; 2. Mounting plate; 3. Side guide assembly; 31. Roller; 32. Side mounting guide frame; 33. Fixing rod; 4. Side clamping assembly; 41. Storage slot; 42. Clamping plate; 43. Drive motor; 44. Ratchet; 45. Limiting plate; 46. Pawl; 47. Clamping spring; 48. Control component; 481. Connecting block; 482. Control rod; 5. Blocking assembly; 51. Blocking frame; 52. Round / square rod; 53. Gear motor; 54. Side limiting component; 55. 1. Concealed slot; 542. Fixed plate; 543. Electric push rod; 544. Push plate; 545. Center rod; 546. Rotating plate; 547. Stabilizing rod; 548. Actuating plate; 6. Friction pad; 7. Clamping pad; 8. Linkage adjustment assembly; 81. Sliding bevel gear; 82. Fixed bevel gear; 83. Elastic fixed pusher; 831. Adjusting sleeve; 832. Fixed ring; 833. Push spring; 9. Retaining ring; 10. Side guide roller; 11. Area guide roller; 12. Pressure sensor. Detailed Implementation

[0018] 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.

[0019] like Figures 1 to 4 As shown, the present invention provides an explosion-proof RGV trolley for transporting materials in a painting workshop, including an RGV body 1, an mounting plate 2 fixedly installed on the RGV body 1, and further including... Side guide assembly 3 is disposed on both sides of mounting plate 2 to guide the material, allowing it to slide quickly out of the designated area and preventing the material from moving out from the left / right side; The side guide assembly 3 includes a roller 31, which is movably connected to the mounting plate 2. Two side mounting guide frames 32 are mounted on the mounting plate 2. A fixing rod 33 is connected inside each of the two side mounting guide frames 32, and the fixing rod 33 is movably connected inside the mounting plate 2. Side clamp assembly 4 is mounted on mounting plate 2 and is used to limit the paint bucket to prevent it from moving out. Blocking component 5, which is mounted on mounting plate 2, is used to block the paint bucket from being moved out from the front / back. The blocking component 5 includes a blocking frame 51, with round and square rods 52 connected to both sides of the blocking frame 51. The round and square rods 52 are movably connected to the mounting plate 2. A reduction motor 53 is connected to the round and square rods 52. The reduction motor 53 is fixedly installed on the mounting plate 2. A side limiting member 54 is installed on the blocking frame 51. The side limiting member 54 is used to press and limit other transported materials. Specifically, the RGV body 1 not only provides a stable installation foundation and load-bearing support for the mounting plate 2, side guide assembly 3, side clamp assembly 4, and blocking assembly 5, but also integrates multiple core functional systems adapted to the hazardous environment and automated production needs of the painting workshop, ensuring the safety, efficiency, and maintainability of the transfer process. The whole vehicle explosion-proof system: the battery box, control box, and each drive motor 43 of the RGV body 1, including the geared motor 53 of the blocking assembly 5 and the drive motor 43 of the side clamp assembly 4, are all professionally explosion-proof treated, adopting an explosion-proof structural design and explosion-proof sealing process, which fully meets the usage requirements of the explosive mixture environment in the painting workshop, and avoids the safety risks caused by electrical sparks and mechanical friction sparks from the source. Automatic navigation system: Through the LiDAR, camera and other sensors mounted on the RGV body 1, the system can automatically perceive the road outline and surrounding obstacles, accurately identify the track path and work station position, realize the autonomous navigation and precise docking of the RGV body 1, and complete the automatic delivery of materials without human intervention. With the coordinated action of various limit components, the accuracy of transfer is improved. Dispatch and control system: Based on the workshop production plan and the real-time operating status of RGV vehicle 1, such as load and remaining power, the system can dynamically schedule the running path, speed and operation sequence of the vehicle, avoid conflicts between multiple vehicles, optimize the logistics cycle, and ensure that the transfer of various types of materials such as paint buckets, workpieces and auxiliary materials is accurately matched with the production plan. Collision warning system: Using radar and infrared sensors, it can detect the distance and speed difference between the RGV vehicle body 1 and surrounding equipment, personnel and workpieces in real time. When a collision risk is detected, it can automatically trigger a deceleration or emergency stop command, and at the same time link the limit components to lock the materials to prevent material spillage, leakage or equipment damage caused by collision. Fault diagnosis system: Real-time monitoring of battery voltage, motor speed, operating parameters of each component and explosion-proof sealing status of RGV vehicle body 1. If abnormalities such as motor failure, sensor malfunction, or seal failure are detected, an audible and visual alarm will be issued immediately and the cause of the fault will be accurately diagnosed, which will facilitate staff to quickly troubleshoot and avoid the fault from expanding and causing production interruption. Maintenance and upkeep system: Based on the running time, operation frequency and fault diagnosis results of RGV vehicle body 1, regular maintenance reminders such as motor lubrication, explosion-proof seal inspection, battery maintenance, etc. are generated to guide staff to perform targeted maintenance, extend equipment service life and reduce failure rate; Data Management System: Automatically records the operating data of RGV vehicle body 1, such as the number of transfers, mileage, workstation parking records, fault information and maintenance records, providing detailed data support for workshop production management, logistics optimization and equipment maintenance, and helping to achieve continuous improvement of production processes.

[0020] like Figures 5 to 7 As shown, the side clamp assembly 4 includes a storage slot 41, which is formed on the mounting plate 2. A retaining plate 42 is rotatably connected to the storage slot 41 via a support plate. A drive motor 43 is fixedly installed inside the retaining plate 42 and is connected to the retaining plate 42. Ratchets 44 are connected to both sides of the retaining plate 42. A limiting plate 45 is connected inside the storage slot 41. A pawl 46 is rotatably connected inside the limiting plate 45 and engages with the ratchet 44. A retaining spring 47 is connected to the pawl 46 and is connected to the inner wall of the storage slot 41. The assembly also includes a control component 48, which controls the engagement of the pawl 46 with the ratchet 44.

[0021] Specifically, the side clamping assembly 4 achieves precise clamping of barrel-shaped materials through a dual-drive limiting structure of drive motor 43 and ratchet 44 mechanically locking pawl 46, ensuring stability and safety during transfer in the painting workshop. After drive motor 43 drives the clamping plate 42 to rotate and clamp the paint barrel, the abutment spring 47 pushes the pawl 46 to tightly engage with the ratchet 44, forming a one-way mechanical locking structure. Even if drive motor 43 loses power or encounters sudden stops, collisions, or other emergencies during transfer, pawl 46 can firmly lock ratchet 44, preventing the clamping plate 42 from rotating in the opposite direction and causing the material to loosen. The outer surface of the clamping plate 42 is a rough contact surface, which can prevent material loosening when in contact with the material. Increased friction makes it less likely to fall off; when not in use, the pallet 42 can be rotated and stored in the storage slot 41 under the drive motor 43, keeping it flush with the surface of the mounting plate 2. This will not interfere with the linkage adjustment of the side guide component 3 and the blocking component 5, nor will it occupy the material placement space of the mounting plate 2, ensuring that non-barrel-shaped materials such as large workpiece pallets can be placed stably and flat, thus improving the space utilization of the mounting plate 2; when the pawl 46 is driven to separate from the ratchet 44 by the control component 48, the clamping spring 47 will be compressed synchronously, and the pawl 46 will rotate in the limiting plate 45 to disengage from the tooth groove of the ratchet 44. With the reverse rotation of the drive motor 43, the material can be released quickly without affecting the unloading efficiency.

[0022] like Figures 5 to 7 As shown, the control component 48 includes a connecting block 481, which is connected to the pawl 46. A control rod 482 is slidably connected inside the limiting plate 45, and the control rod 482 is connected to the connecting block 481.

[0023] Specifically, the integrated rigid connection between the control lever 482 and the connecting block 481 and the pawl 46 allows the linear sliding of the control lever 482 to be directly and without loss converted into the rotational unlocking of the pawl 46. The unlocking stroke is strictly limited by the preset groove length of the limit plate 45, which avoids damage to the tooth tip of the pawl 46 or the tooth groove of the ratchet 44 due to excessive operation, and ensures that the pawl 46 is completely disengaged from the tooth groove of the ratchet 44 without any jamming residue.

[0024] like Figures 2 to 4 As shown, the side limiting member 54 includes a hidden groove 541, which is formed on the blocking frame 51. A fixing plate 542 is connected inside the hidden groove 541. An electric push rod 543 is fixedly installed on the fixing plate 542. A push plate 544 is connected to the telescopic end of the electric push rod 543. A central rod 545 is connected inside the hidden groove 541. A rotating plate 546 is movably connected to the central rod 545. A stabilizing rod 547 is connected inside the hidden groove 541. A toggle plate 548 is sleeved on the stabilizing rod 547. The toggle plate 548 is movably connected to the rotating plate 546.

[0025] Specifically, when the electric push rod 543 extends or retracts, the hinged linkage between the push plate 544 and the rotating plate 546 drives the actuating plate 548 to swing flexibly around the stabilizing rod 547 to clamp the material. Compared with the design of a single push rod directly clamping, the actuating plate 548 can compensate for the angle according to the surface contour of the material, such as flat surfaces, slight protrusions, and curved edges, to ensure maximum contact area with the material. This avoids material breakage caused by local pressure concentration and improves clamping stability, making it especially suitable for the transfer needs of irregularly shaped workpieces. During unloading, the electric push rod 543 retracts in the opposite direction. The retraction causes each component to reset along the original transmission path. The actuating plate 548 returns to its initial position under its own weight and the limiting action of the stabilizing rod 547, causing each component to be completely housed in the hidden slot 541. The opening of the hidden slot 541 is flush with the surface of the blocking frame 51, so that it will not interfere with the width adjustment of the side guide assembly 3 or the rotation and unfolding of the blocking frame 51, ensuring the smooth linkage of the entire machine structure. The electric push rod 543 adopts an explosion-proof stepping design, and the stroke adjustment accuracy can reach 1mm. With the optimization of the lever arm of the rotating plate 546, the clamping force can be controlled in stages.

[0026] like Figures 3 to 4 As shown, a friction pad 6 is connected to the push plate 544, and a clamping pad 7 is connected to the toggle plate 548.

[0027] Specifically, both friction pad 6 and clamping pad 7 are made of explosion-proof and flame-retardant fluororubber material, which can resist the corrosion of paint solvents such as toluene and xylene, and can withstand the high temperature environment below 80°C in the painting workshop, avoiding problems such as aging, cracking and adhesion after long-term use. The surfaces of friction pad 6 and clamping pad 7 are made of a composite structure of diamond anti-slip texture and micro-convex particles, which can produce elastic deformation when clamped or subjected to inertial impact, avoiding material damage caused by hard contact.

[0028] like Figures 8 to 9 As shown, a linkage adjustment component 8 is slidably connected to the round square rod 52. The linkage adjustment component 8 includes a sliding bevel gear 81, which is slidably connected to the round square rod 52. A fixed bevel gear 82 is connected to the fixed rod 33. The sliding bevel gear 81 is slidably adjusted on the round square rod 52 by an elastic fixed pusher 83.

[0029] Specifically, the round-square rod 52 adopts an integrated forging structure of square and round segments. The square segment forms a clearance fit with the inner hole of the sliding bevel gear 81, which not only restricts the circumferential rotation of the sliding bevel gear 81 and ensures that it can only slide along the axial direction, but also avoids tooth surface wear caused by radial offset when the sliding bevel gear 81 meshes through the square guide. The round segment forms a rotation fit with the mounting plate 2, which reduces the frictional resistance when the blocking frame 51 rotates, and makes the linkage adjustment of the side guide assembly 3 and the blocking assembly 5 smoother. When the sliding bevel gear 81 and the fixed bevel gear 82 are fully engaged, the reduction motor 53 drives the round square rod 52 to rotate, which can synchronously drive the fixed rod 33 to rotate, realizing the linkage deployment of the side-mounted guide frame 32 and the blocking frame 51. When the sliding bevel gear 81 and the fixed bevel gear 82 are separated, only the round square rod 52 rotates alone, and the blocking frame 51 can be deployed independently. This graded state of full engagement and partial engagement, combined with the fine adjustment of the elastic fixed pusher 83, can accurately adapt to different scenarios such as single-sided unloading with only the blocking frame 51 open, and double-sided mixed transportation with the side-mounted guide frame 32 and the blocking frame 51 fully open.

[0030] like Figures 8 to 9 As shown, the elastic fixed pusher 83 includes an adjusting sleeve 831, which is threadedly connected to the round square rod 52. The adjusting sleeve 831 is in contact with the sliding bevel gear 81. A fixing ring 832 is connected to the round square rod 52, and a pushing spring 833 is connected to the fixing ring 832. The pushing spring 833 is in contact with the sliding bevel gear 81.

[0031] Specifically, the elastic fixed pusher 83, through the threaded rotating adjusting sleeve 831, presses against the sliding bevel gear 81 and engages with the fixed bevel gear 82, and the pusher spring 833 elastically pushes the sliding bevel gear 81. This combination structure forms a dual function of rigid positioning and elastic reset, making the position of the sliding bevel gear 81 controllable during use. When disengaging, the adjusting sleeve 831 rotates in the opposite direction and moves away from the sliding bevel gear 81, and the sliding bevel gear 81 is then pushed by the pusher spring 833 to disengage from the fixed bevel gear 82. The engagement state is controllable.

[0032] like Figures 8 to 9 As shown, a retaining ring 9 is connected to the round rod 52, and the retaining ring 9 is in contact with the sliding bevel gear 81.

[0033] Specifically, the retaining ring 9 is set on the round square rod 52 to block and limit the sliding bevel gear 81, so that after the sliding bevel gear 81, pushed by the adjusting sleeve 831, slides on the round square rod 52 to the designated area, it stably meshes with the fixed bevel gear 82 without shifting.

[0034] like Figures 1 to 4 As shown, a side guide roller 10 is movably connected to the side mounting guide frame 32, and a zone guide roller 11 is movably connected to the blocking frame 51.

[0035] Specifically, the side guide roller 10, the area guide roller 11, and the roller 31 on the mounting plate 2 form a fast guide unloading assembly. When the material is unloaded, the roller 31 on the mounting plate 2 provides longitudinal conveying power. The side guide roller 10 forms a guide channel on both sides, converting the sliding friction of the material into rolling friction, thus accelerating the unloading efficiency. The area guide roller 11 also plays an auxiliary unloading role on both the front and rear sides, assisting the material to be unloaded from the mounting plate 2.

[0036] like Figure 4 As shown, pressure sensors 12 are fixedly installed on both the toggle plate 548 and the push plate 544.

[0037] Specifically, pressure sensors 12 are embedded in the core contact areas of the actuating plate 548 and the pushing plate 544, respectively. They can simultaneously collect the main clamping pressure of the pushing plate 544 and the adaptive contact pressure of the actuating plate 548. After accurately identifying local pressure concentration points, the controller controls the electric push rod 543 to fine-tune the stroke and the angle of the rotating plate 546, so that the pressure is evenly distributed and avoids damage caused by excessive local force on the material. The sensor presets multiple pressure thresholds to form a closed-loop control with the electric push rod 543. For a small 18L paint bucket, a low pressure threshold is triggered to prevent bucket deformation. For a large 200L paint bucket, a medium pressure threshold is triggered to ensure stable clamping. For fragile workpieces or plastic auxiliary boxes, an ultra-low pressure threshold is triggered. In conjunction with the friction pad 6 and clamping pad 7, flexible clamping is achieved. When the detected pressure exceeds 120% of the preset threshold, the electric push rod 543 is automatically controlled to retract in the opposite direction to avoid the risk of over-clamping in real time.

[0038] The working process of the technical solution provided by this invention is as follows: In use, when the RGV vehicle body 1 locates the material to be loaded using laser radar and camera, the drive wheels move the RGV vehicle body 1 to the loading station. The mounting plate 2 remains horizontal. If the material is a paint bucket, the drive motor 43 in the storage slot 41 starts, and the output shaft drives the clamping plate 42 to rotate on the support plate. The rotation angle is adaptively adjusted according to the bucket diameter. The ratchet wheels 44 on both sides of the clamping plate 42 rotate synchronously with the clamping plate 42. The pawl 46 in the limiting plate 45 is engaged in the groove of the ratchet wheel 44 under the pushing force of the clamping spring 47, forming a one-way lock until the rough surface of the clamping plate 42 is in contact with the bucket body to complete the fixation. If the material is a workpiece pallet or auxiliary material box, the electric... The push rod 543 extends, and the push plate 544 slides along the hidden groove 541. Through the hinge shaft, it drives the rotating plate 546 to rotate around the central rod 545. The other end of the rotating plate 546 pushes the actuating plate 548 to swing around the stabilizing rod 547, so that the actuating plate 548 and the push plate 544 form an angle to match the material edge. The friction pad 6 and the clamping pad 7 are in contact with the material surface. The pressure sensor 12 provides real-time feedback of the pressure value to ensure tight contact without damage. Then, the reduction motor 53 drives the round and square rod 52 to rotate, which drives the blocking frame 51 and the side mounting guide frame 32 to rotate toward the center of the mounting plate 2 until the area guide roller 11 and the side guide roller 10 are in contact with the front end of the material, completing the multi-directional limiting. During transport, the RGV vehicle 1 travels along the planned route under the guidance of the dispatch control system. When encountering turns or sudden stops, the clamping plate 42, under the reaction force of the barrel, tends to rotate in the opposite direction. The teeth of the ratchet 44 press against the pawl 46, further compressing the spring 47, making the pawl 46 and ratchet 44 more tightly engaged, preventing the clamping plate 42 from loosening. The pressure sensor 12 detects a sudden increase in pressure and immediately sends a signal to the controller, controlling the electric push rod 543 to retract. This, through the push plate 544 and the rotating plate 546, drives the actuating plate 548 for fine-tuning, releasing localized pressure. If... The operator rotates the adjusting sleeve 831 on the round square rod 52 to push the sliding bevel gear 81 to slide along the square section of the round square rod 52, which partially meshes with the fixed bevel gear 82 on the fixed rod 33. The reduction motor 53 drives the round square rod 52 to rotate, which drives the fixed rod 33 to rotate through the bevel gear transmission, so that the side mounting guide frame 32 and the blocking frame 51 expand / contract synchronously. During expansion, the side guide roller 10 and the area guide roller 11 are inclined to fit against the protruding part of the material. At the same time, the effective placement area of ​​the mounting plate 2 is expanded. Upon arrival at the unloading station, the anti-collision warning system confirms safety, and the RGV vehicle 1 stops. According to the unloading direction, the operator rotates the adjusting sleeve 831 of the corresponding side square rod 52 in the opposite direction. The adjusting sleeve 831 moves away from the sliding bevel gear 81, and the sliding bevel gear 81 slides along the square rod 52 under the elastic force of the pushing spring 833, separating from the fixed bevel gear 82. The reduction motor 53 drives the square rod 52 to rotate independently, causing the blocking frame 51 and the side mounting guide frame 32 to rotate and open until the blocking frame 51 and the side mounting guide frame 32 fall to contact the mounting plate 2. Then, the operator pushes the control lever 482, which slides along the groove of the limiting plate 45, driving the pawl 46 to rotate around the limiting plate 45 via the connecting block 481. Separated from ratchet 44, drive motor 43 reverses, causing clamping plate 42 to retract into storage groove 41 and align with mounting plate 2. Electric push rod 543 of side limit component 54 retracts, pushing plate 544 to reset. Rotating plate 546 and actuating plate 548 sequentially return to their positions in hidden groove 541. Then, material can be unloaded with the assistance of roller 31, side guide roller 10, and area guide roller 11. Throughout the process, the explosion-proof structure of battery box, control box, and each motor isolates sparks. Fault diagnosis system monitors motor speed and sensor data in real time. In case of abnormality, it immediately triggers audible and visual alarms and locks the limit components. Data management system records clamping pressure, unfolding angle, and other data for each transfer, providing a basis for maintenance system and ensuring continuous and stable operation of equipment.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof RGV trolley for transporting materials in a painting workshop, comprising an RGV body (1), characterized in that, The RGV vehicle body (1) is fixedly mounted with a mounting plate (2), and also includes Side guide assembly (3), which is disposed on both sides of the mounting plate (2), is used to guide the material so that it can slide out of the designated area quickly and prevent the material from moving out from the left / right. The side guide assembly (3) includes a roller (31) which is movably connected to the mounting plate (2). Two side mounting guide frames (32) are mounted on the mounting plate (2). A fixing rod (33) is connected inside each of the two side mounting guide frames (32). The fixing rod (33) is movably connected inside the mounting plate (2). Side clamp assembly (4), which is mounted on mounting plate (2) and is used to limit the paint bucket to prevent it from moving out; The side clamp assembly (4) includes a storage slot (41) which is opened on the mounting plate (2). A clamping plate (42) is rotatably connected to the storage slot (41) through a support plate. A drive motor (43) is fixedly installed inside the storage slot (41). The drive motor (43) is connected to the clamping plate (42). Ratchets (44) are connected to both sides of the clamping plate (42). A limiting plate (45) is connected inside the storage slot (41). A pawl (46) is rotatably connected inside the limiting plate (45). The pawl (46) engages with the ratchet (44). A clamping spring (47) is connected to the pawl (46). The clamping spring (47) is connected to the inner wall of the storage slot (41). The assembly also includes a control component (48) which controls the engagement of the pawl (46) with the ratchet (44). The control component (48) includes a connecting block (481) connected to a pawl (46), and a control rod (482) is slidably connected inside the limiting plate (45), the control rod (482) being connected to the connecting block (481). A blocking assembly (5) is provided on the mounting plate (2) for blocking the paint bucket from being moved out from the front / back. The blocking component (5) includes a blocking frame (51), with round rods (52) connected to both sides of the blocking frame (51). The round rods (52) are movably connected to the mounting plate (2). A reduction motor (53) is connected to the round rods (52). The reduction motor (53) is fixedly installed to the mounting plate (2). A side limiting member (54) is installed on the blocking frame (51). The side limiting member (54) is used to tighten and limit other transported materials.

2. The explosion-proof RGV trolley for transporting materials in a painting workshop according to claim 1, characterized in that: The side limiting member (54) includes a hidden groove (541), which is formed on the blocking frame (51). A fixed plate (542) is connected inside the hidden groove (541). An electric push rod (543) is fixedly installed on the fixed plate (542). A push plate (544) is connected to the telescopic end of the electric push rod (543). A central rod (545) is connected inside the hidden groove (541). A rotating plate (546) is movably connected to the central rod (545). The rotating plate (546) is movably connected to the push plate (544). A stabilizing rod (547) is connected inside the hidden groove (541). A toggle plate (548) is sleeved on the stabilizing rod (547). The toggle plate (548) is movably connected to the rotating plate (546).

3. The explosion-proof RGV trolley for transporting materials in a painting workshop according to claim 2, characterized in that: A friction pad (6) is connected to the push plate (544), and a clamping pad (7) is connected to the actuating plate (548).

4. The explosion-proof RGV trolley for transporting materials in a painting workshop according to claim 1, characterized in that: A linkage adjustment component (8) is slidably connected to the round square rod (52). The linkage adjustment component (8) includes a sliding bevel gear (81), which is slidably connected to the round square rod (52). A fixed bevel gear (82) is connected to the fixed rod (33). The sliding bevel gear (81) is slidably adjusted on the round square rod (52) by an elastic fixed pusher (83).

5. The explosion-proof RGV trolley for transporting materials in a painting workshop according to claim 4, characterized in that: The elastic fixing pusher (83) includes an adjusting sleeve (831), which is threaded onto the round square rod (52). The adjusting sleeve (831) is in contact with the sliding bevel gear (81). A fixing ring (832) is connected to the round square rod (52), and a pushing spring (833) is connected to the fixing ring (832). The pushing spring (833) is in contact with the sliding bevel gear (81).

6. The explosion-proof RGV trolley for transporting materials in a painting workshop according to claim 1, characterized in that: A retaining ring (9) is connected to the round square rod (52), and the retaining ring (9) is in contact with the sliding bevel gear (81).

7. The explosion-proof RGV trolley for transporting materials in a painting workshop according to claim 1, characterized in that: A side guide roller (10) is movably connected to the side mounting guide frame (32), and a zone guide roller (11) is movably connected to the blocking frame (51).

8. The explosion-proof RGV trolley for transporting materials in a painting workshop according to claim 2, characterized in that: Pressure sensors (12) are fixedly installed on both the actuating plate (548) and the push plate (544).

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