Shockproof buffering type logistics automatic guided vehicle

Abstract

The invention discloses a shockproof buffer type logistics automatic guided vehicle, which belongs to the technical field of logistics transportation and comprises a vehicle body and driving wheels symmetrically mounted in the middles of two sides of the vehicle body. Through a lifting mechanism in an adjusting cavity, guide blocks are symmetrically and fixedly connected to a supporting ring at the bottom of a buffer spring, a complete mechanical linkage link is formed by means of the sliding characteristic of the guide blocks in a stepped guide groove and in combination with transmission cooperation of a lever, a gear and a first rack; material pressure drives the supporting ring to drive the guide block to move along the stepped guide groove, driving force is amplified through the lever to overcome spring pre-tightening force increment resistance, graded locking is achieved in cooperation with a multi-gear clamping groove in the stepped guide groove, multi-stage spring pre-tightening force adjustment is automatically completed, small pre-tightening force is maintained during light load, and buffering sensitivity is guaranteed. The pre-tightening force is increased to restrain the platform from shaking during heavy load, different load-bearing working conditions can be adapted without electric control intervention, and the operation stability of the guided vehicle in the moving process is remarkably improved.

Description

Technical Field

[0001] This invention relates to an automated guided vehicle (AGV), and more particularly to a shock-absorbing and buffer-type automated guided vehicle for logistics, belonging to the field of logistics transportation technology. Background Technology

[0002] With the rapid development of intelligent manufacturing and warehousing logistics, automated guided vehicles (AGVs), as core equipment for automated material handling, are widely used in factory workshops, e-commerce warehouses, ports and docks. Their shock absorption and cushioning performance during transportation directly determines the stability of material handling.

[0003] Currently, most automated guided vehicles (AGVs) on the market are equipped with basic shock-absorbing and buffering structures. These structures absorb vibration energy generated by road bumps and start-stop impacts through elastic components, thus reducing the impact of vibration on materials to a certain extent. However, in practical applications, when conveying lightweight and fragile materials, the fixed high-preload springs can cause the buffering structure to become too rigid, failing to effectively absorb high-frequency, small-amplitude vibrations and easily causing material collisions and damage. When conveying heavy materials, the fixed low-preload springs can cause the carrying platform to shake significantly due to excessive buffering stroke. This not only affects the stability of material conveying but may also cause material to tip over due to a shift in the center of gravity. Some systems use electronic control systems combined with sensors to achieve graded buffering, but such solutions require sensors, controllers, and other electronic control components. This not only increases the manufacturing cost and maintenance difficulty of the equipment but also significantly increases the failure rate of electronic control components under harsh logistics conditions such as dust and humidity, seriously affecting the continuous operation capability of the AGV.

[0004] To address these issues, a shock-absorbing automated guided vehicle (AGV) was designed. Summary of the Invention

[0005] The main objective of this invention is to provide a shock-absorbing automated guided vehicle (AGV) for logistics. Through an adjustment mechanism composed of components such as an inverted plate, stepped guide groove, guide block, lever, gear, and rack, the guide block is symmetrically fixed to a support ring at the bottom of the buffer spring. Utilizing the sliding characteristics of the guide block within the stepped guide groove, combined with the transmission cooperation of the lever, gear, and rack, a complete mechanical linkage is formed. When the load on the top of the platform changes, the material pressure drives the support ring to move the guide block along the stepped guide groove. The lever amplifies the driving force to overcome the incremental resistance of the spring preload. Combined with the multi-position locking slots within the stepped guide groove, it achieves graded locking and autonomously completes multi-level spring preload adjustment. Under light loads, it maintains a small preload to ensure buffer sensitivity, while under heavy loads, it increases the preload to suppress platform sway. It can adapt to different load conditions without electronic control intervention, significantly improving the operational stability of the AGV during movement. The rotating mechanism inside the mounting cavity consists of rack two, a gear ring, a strip groove two, and a connecting block. The gear ring is fitted with an adjustable hydraulic damper with a bottom adjustment knob. Rack two is fixedly connected to the end of rack one of the lifting mechanism, forming a linkage with the lifting mechanism. When the lifting mechanism drives rack one to move and complete the preload adjustment, rack one simultaneously drives rack two to slide along strip groove two through the connecting block, meshing and driving the gear ring to rotate. This, in turn, adjusts the adjustment knob of the adjustable hydraulic damper, achieving adaptive synchronous adjustment of the damping force. This ensures that the spring preload and damping force are precisely matched to the corresponding load, forming a double shock absorption guarantee. This further enhances the stability of the guided vehicle under bumpy, start-stop, and other working conditions, avoiding the limitations of a single buffer structure. By setting a limiting mechanism consisting of a strip groove, an L-shaped mounting plate, a screw, a baffle, an insert plate, and a slot at the four corners of the top of the carrier plate, the position of the limiting mechanism can be adjusted according to the size of the material to be transported. When the guide car drags the material, it forms a circumferential constraint on the material from the four corners, avoiding inertial sliding when the material is started and stopped. It complements the shock-absorbing and buffering structure, further improving the overall transportation stability.

[0006] The objective of this invention can be achieved by adopting the following technical solutions: A shock-absorbing automated guided vehicle (AGV) for logistics includes a vehicle body, drive wheels symmetrically mounted on the middle of both sides of the vehicle body, and driven wheels mounted at the four corners of the bottom of the vehicle body. The top of the vehicle body is horizontally equipped with a carrier plate for carrying materials. Each of the four corners inside the vehicle body has an independent adjustment cavity. At the four corners of the bottom of the carrier plate, corresponding to the position of the adjustment cavity, a support rod is vertically fixed. The ends of multiple support rods away from the carrier plate slide into the interior of the corresponding adjustment cavity, and the bottom ends of the support rods are fixedly connected to a support plate. The bottom of the adjustment cavity is provided with a support ring corresponding to the support plate. A buffer spring is elastically provided between the top of the support ring and the bottom of the support plate. The adjustment cavity is equipped with a lifting mechanism, which is driven by the support ring and is used to adaptively adjust the preload of the buffer spring according to the load-bearing weight of the carrier plate. The bottom of the adjustment chamber has an installation cavity, and an adjustable hydraulic damper is vertically installed inside each installation cavity. The movable end of the adjustable hydraulic damper passes through the inside of the support ring and is fixedly connected to the bottom of the support plate. An adjustment knob is provided at the bottom of the adjustable hydraulic damper. A rotating mechanism is assembled inside the installation cavity. The rotating mechanism is linked with the adjustment knob and the lifting mechanism to synchronously adjust the damping force of the adjustable hydraulic damper. Limiting mechanisms are installed at the four corners of the top of the carrier plate. The limiting mechanisms can slide and adjust along the top of the carrier plate to limit and fix materials of different sizes at the four corners.

[0007] Preferably, an anti-collision rubber ring is fixed circumferentially at the bottom of the outer side of the vehicle body, and the anti-collision rubber ring protrudes from the outer side of the vehicle body.

[0008] Preferably, a hydraulic cylinder is fixedly installed at the middle position of the bottom end of the carrier plate. The output shaft of the hydraulic cylinder extends vertically upward and is fixedly installed with a lifting plate. The lifting plate is horizontally attached to the top of the carrier plate to assist in the lifting and positioning of materials.

[0009] Preferably, the lifting mechanism includes a chamfered plate, a stepped guide groove, a guide block, and a telescopic assembly. The chamfered plate is horizontally slidably installed inside the adjustment cavity. The stepped guide groove is symmetrically opened on the inner side of the chamfered plate. The guide block is symmetrically installed on both sides of the support ring, and the guide block is slidably adapted to the stepped guide groove. The adjustment cavity is provided with a telescopic assembly that drives the chamfered plate to slide horizontally.

[0010] Preferably, the telescopic assembly includes a strip groove, a slider, a lever, a through groove, a shaft, a gear, and a rack. The strip groove is located on the side of the bottom of the carrier plate. A slider is slidably mounted inside the strip groove. A lever is hinged to the bottom end of the slider. The bottom end of the lever extends into the interior of the adjustment cavity. A through groove adapted to the lever is provided at the top of the adjustment cavity. A shaft is rotatably mounted inside the adjustment cavity via a bearing. A gear is mounted on the shaft. The bottom end of the lever is fixedly connected to the gear. A rack that meshes with the gear is horizontally slidably mounted at the bottom of the adjustment cavity, and the end of the rack is fixedly connected to the U-shaped plate.

[0011] Preferably, a limit rod is vertically slidably provided at the bottom of the adjustment cavity, and the top end of the limit rod is fixedly connected to the support ring.

[0012] Preferably, the rotating mechanism includes a second rack, a toothed ring, a second slot, and a connecting block. The second rack is linearly slidably disposed inside the mounting cavity. The toothed ring is fixed to the outside of the adjusting knob and meshes with the second rack. The top of the mounting cavity is provided with a second slot that communicates with the inside of the adjusting cavity. The connecting block is slidably disposed inside the second slot. The upper and lower ends of the connecting block are fixedly connected to the second rack and the first rack, respectively.

[0013] Preferably, the limiting mechanism includes a three-slotted groove, an L-shaped mounting plate, a screw, a baffle, and a positioning component. The three-slotted groove is located at the four corners of the top of the carrier plate. The L-shaped mounting plate is slidably installed inside the three-slotted groove. The screw is rotatably installed between the two ends of the three-slotted groove, and the screw is threadedly connected to the L-shaped mounting plate. A baffle is rotatably installed at one end of the top of the L-shaped mounting plate, and a positioning component is provided between the baffle and the L-shaped mounting plate.

[0014] Preferably, the positioning component includes an insert plate and a slot. The insert plate is rotatably mounted on the inner bottom of the baffle, and the bottom of the baffle has a groove that matches the insert plate. The top of the L-shaped mounting plate has a slot that matches the insert plate.

[0015] Preferably, the lifting platform is made of high-strength aluminum alloy, and the top of the lifting platform is equipped with an anti-slip pad.

[0016] The beneficial effects of this invention are: This invention provides a shock-absorbing automated guided vehicle (AGV) for logistics. Through an adjustment mechanism composed of components such as an inverted plate, stepped guide groove, guide block, lever, gear, and rack, the guide block is symmetrically fixed to a support ring at the bottom of the buffer spring. Utilizing the sliding characteristics of the guide block within the stepped guide groove, combined with the transmission of the lever, gear, and rack, a complete mechanical linkage is formed. When the load on the top of the platform changes, the material pressure drives the support ring to move the guide block along the stepped guide groove. The lever amplifies the driving force to overcome the incremental resistance of the spring preload. Combined with the multi-position locking slots within the stepped guide groove, it achieves graded locking and autonomously completes multi-level spring preload adjustment. Under light loads, it maintains a small preload to ensure buffer sensitivity; under heavy loads, it increases the preload to suppress platform sway. It can adapt to different load conditions without electrical control intervention, significantly improving the operational stability of the AGV during movement. The rotating mechanism inside the mounting cavity consists of rack two, a gear ring, a strip groove two, and a connecting block. An adjustable hydraulic damper adjustment knob is fitted onto the gear ring. Rack two is fixedly connected to the end of rack one of the lifting mechanism, forming a linkage with the lifting mechanism. When the lifting mechanism drives rack one to translate and complete the preload adjustment, rack one simultaneously drives rack two to slide along strip groove two via the connecting block, engaging and rotating the gear ring. This, in turn, adjusts the adjustment knob of the adjustable hydraulic damper, achieving adaptive synchronous adjustment of the damping force. This ensures precise matching of the spring preload and damping force to the corresponding load, forming a dual shock absorption system. This further enhances the stability of the guided vehicle under bumpy, start-stop, and other operating conditions, avoiding the limitations of a single buffer structure. By setting a limiting mechanism consisting of a strip groove, an L-shaped mounting plate, a screw, a baffle, an insert plate, and a slot at the four corners of the top of the carrier plate, the position of the limiting mechanism can be adjusted according to the size of the material to be transported. When the guide car drags the material, it forms a circumferential constraint on the material from the four corners, avoiding inertial sliding when the material is started and stopped. It complements the shock-absorbing and buffering structure, further improving the overall transportation stability. Attached Figure Description

[0017] Figure 1 This is the front view of the present invention; Figure 2 This is a front sectional view of the present invention; Figure 3 This is a partial structural diagram of the vehicle body interior of the present invention; Figure 4 This is a structural diagram of the inner side of the inverted plate of the present invention; Figure 5 This is a structural diagram of the support ring of the present invention; Figure 6 This is a structural diagram of the support plate of the present invention; Figure 7 This is a diagram of the rotating mechanism of the present invention; Figure 8 This is a partial cross-sectional view of the top of the carrier plate of the present invention; Figure 9 This is an unfolded view of the limiting mechanism of the present invention.

[0018] In the diagram: 1. Vehicle body; 101. Drive wheel; 102. Driven wheel; 103. Anti-collision rubber ring; 2. Carrier plate; 3. Adjustment cavity; 4. Support rod; 5. Support plate; 6. Buffer spring; 7. Support ring; 8. Lifting mechanism; 801. C-shaped plate; 802. Stepped guide groove; 803. Guide block; 804. Strip groove one; 805. Sliding block; 806. Lever; 807. Through groove; 808. Shaft; 809. Gear; 810. Rack one; 811. Limiting rod; 9. Mounting cavity; 10. Adjustable hydraulic damper; 11. Adjustment knob; 12. Rotating mechanism; 1201. Rack II; 1202. Gear ring; 1203. Slot II; 1204. Connecting block; 13. Hydraulic cylinder; 14. Limiting mechanism; 1401. Strip groove three; 1402. L-shaped mounting plate; 1403. Screw; 1404. Baffle; 1405. Insert plate; 1406. Slot; 15. Lifting plate. Detailed Implementation

[0019] To enable those skilled in the art to more clearly understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0020] Example 1 like Figures 1-9 As shown, this embodiment provides a shock-absorbing automated guided vehicle (AGV), including a vehicle body 1, drive wheels 101 symmetrically installed at the middle positions on both sides of the vehicle body 1, and driven wheels 102 installed at the four corners of the bottom of the vehicle body 1; The top of the vehicle body 1 is horizontally provided with a carrier plate 2 for carrying materials. Each of the four corners inside the vehicle body 1 is provided with an independent adjustment cavity 3. Each of the four corners at the bottom of the carrier plate 2 is vertically fixed with a support rod 4 corresponding to the position of the adjustment cavity 3. The ends of multiple sets of support rods 4 away from the carrier plate 2 slide into the interior of the corresponding adjustment cavity 3, and the bottom end of the support rod 4 is fixedly connected to a support plate 5. The bottom of the adjusting cavity 3 is provided with a support ring 7 corresponding to the support plate 5. A buffer spring 6 is elastically provided between the top of the support ring 7 and the bottom of the support plate 5. The adjusting cavity 3 is equipped with a lifting mechanism 8, which is driven by the support ring 7 and is used to adaptively adjust the preload of the buffer spring 6 according to the load-bearing weight of the carrier plate 2. An installation cavity 9 is provided at the bottom of the adjustment cavity 3. An adjustable hydraulic damper 10 is vertically installed inside each installation cavity 9. The movable end of the adjustable hydraulic damper 10 passes through the inside of the support ring 7 and is fixedly connected to the bottom of the support plate 5. An adjustment knob 11 is provided at the bottom of the adjustable hydraulic damper 10. A rotating mechanism 12 is assembled inside the installation cavity 9. The rotating mechanism 12 is linked with the adjustment knob 11 and the lifting mechanism 8 respectively to synchronously adjust the damping force of the adjustable hydraulic damper 10. Limiting mechanisms 14 are installed at the four corners of the top of the carrier plate 2. The limiting mechanisms 14 can slide and adjust along the top of the carrier plate 2 to limit and fix materials of different sizes at the four corners.

[0021] Overall working principle: When the shock-absorbing automated guided vehicle is put into use, the limiting mechanisms 14 at the four corners of the top of the carrier plate 2 are first adjusted according to the size of the material to be transported. The position adjustment of the limiting mechanisms 14 forms a constraint space that is compatible with the material. After the material is placed stably on the top of the carrier plate 2, the material is prevented from sliding due to inertia during transportation.

[0022] After the material is placed, its weight is transmitted through the carrier plate 2 to the support rods 4 at the four corners at the bottom. The support rods 4, under pressure, drive the support plate 5 to move vertically downward along the adjustment cavity 3. The support plate 5 presses down on the buffer spring 6, causing the buffer spring 6 to undergo elastic deformation and generate initial buffering force, which initially offsets the impact of the material's gravity. At the same time, the downward movement of the carrier plate 2 triggers the lifting mechanism 8 inside the adjustment cavity 3 to start. The lifting mechanism 8, through a mechanical linkage, adaptively adjusts the preload of the buffer spring 6 according to the material weight: maintaining a small preload under light load to ensure the buffer structure's sensitivity to high-frequency, small-amplitude vibrations; and increasing the preload under heavy load to suppress large-scale shaking of the carrier plate 2.

[0023] During the operation of the lifting mechanism 8, it is linked with the adjustable hydraulic damper 10 through the rotating mechanism 12: the displacement of the lifting mechanism 8 is transmitted to the adjusting knob 11 through the rotating mechanism 12, driving the adjusting knob 11 to rotate, and synchronously adjusting the damping force of the adjustable hydraulic damper 10, so that the damping force and the preload of the buffer spring 6 are precisely matched to the corresponding load, forming a double shock absorption guarantee. When the guide car vibrates on the road surface or in the start-stop state, the buffer spring 6 absorbs the vibration energy, and the adjustable hydraulic damper 10 suppresses the rebound vibration of the buffer spring 6, quickly attenuating the vibration amplitude, and ensuring the stability of the carrier plate 2 and the material.

[0024] Example 2 The solution in Example 1 will be further described below with reference to its specific working method. In this embodiment, an anti-collision rubber ring 103 is fixed circumferentially at the bottom outer side of the vehicle body 1, and the anti-collision rubber ring 103 protrudes from the outer side of the vehicle body 1.

[0025] Local working principle: When the guided vehicle collides with surrounding equipment, shelves or other obstacles during operation, the anti-collision rubber ring 103, as the first protective structure, will make contact with the collision object first, ensuring the safety of the guided vehicle's continuous operation.

[0026] In this embodiment, a hydraulic cylinder 13 is fixedly installed at the middle position of the bottom end of the carrier plate 2. The output shaft of the hydraulic cylinder 13 extends vertically upward and is fixedly installed with a lifting plate 15. The lifting plate 15 is horizontally attached to the top of the carrier plate 2 to assist in the lifting and positioning of materials.

[0027] Partial working principle: When loading and unloading materials are required, the hydraulic cylinder 13 located at the middle of the bottom end of the carrier plate 2 is activated. After pressurized oil is introduced into the hydraulic cylinder 13, its output shaft extends vertically upward, driving the lifting plate 15 fixed at the top to move upward synchronously. The lifting plate 15 lifts the material, adjusting it to a height convenient for forklift or manual loading and unloading. After the material loading and unloading is completed, the output shaft of the hydraulic cylinder 13 retracts, and the lifting plate 15 moves downward and returns to its initial position against the top of the carrier plate 2, without affecting the stability of the material during transportation. This structure achieves auxiliary lifting and positioning of materials through hydraulic drive, reducing the difficulty of loading and unloading operations and improving logistics transfer efficiency.

[0028] In this embodiment, the lifting mechanism 8 includes a chamfered plate 801, a stepped guide groove 802, a guide block 803, and a telescopic assembly. The chamfered plate 801 is horizontally slidably installed inside the adjustment cavity 3. The stepped guide groove 802 is symmetrically provided on the inner side of the chamfered plate 801. The guide block 803 is symmetrically installed on both sides of the support ring 7, and the guide block 803 is slidably adapted to the stepped guide groove 802. The adjustment cavity 3 is provided with a telescopic assembly that drives the chamfered plate 801 to slide horizontally.

[0029] Local working principle: When the carrier plate 2 carries the material, the telescopic component inside the adjusting cavity 3 is activated, driving the C-shaped plate 801 to move horizontally along the adjusting cavity 3. The horizontal displacement of the C-shaped plate 801 changes the relative position of the stepped guide groove 802, which in turn drives the support ring 7 to rise and fall vertically through the guide block 803, adjusting the distance between the support ring 7 and the support plate 5, and finally realizing the graded adjustment of the preload of the buffer spring 6, ensuring the adaptability of the buffer structure under different loads.

[0030] In this embodiment, the telescopic assembly includes a strip groove 804, a slider 805, a lever 806, a through groove 807, a shaft 808, a gear 809, and a rack 810. The strip groove 804 is formed on the side of the bottom of the carrier plate 2. The slider 805 is slidably arranged inside the strip groove 804. The bottom end of the slider 805 is hinged to the lever 806. The bottom end of the lever 806 extends into the interior of the adjustment cavity 3. The top of the adjustment cavity 3 is provided with a through groove 807 adapted to the lever 806. The shaft 808 is rotatably mounted inside the adjustment cavity 3 through a bearing. The gear 809 is fitted on the shaft 808. The bottom end of the lever 806 is fixedly connected to the gear 809. The bottom of the adjustment cavity 3 is horizontally slidably provided with a rack 810 that meshes with the gear 809, and the end of the rack 810 is fixedly connected to the U-shaped plate 801.

[0031] Local working principle: The carrier plate 2 is compressed by the weight of the material, causing a slight displacement, which drives the slider 805 inside the bottom side strip groove 804 to slide horizontally along the groove 804. The lever 806, hinged to the bottom end of the slider 805, rotates around the shaft 808 as the slider 805 moves. The bottom end of the lever 806 is fixedly connected to the gear 809 mounted on the shaft 808, thereby driving the gear 809 to rotate synchronously around the shaft 808. The gear 809 meshes with the rack 810, which slides horizontally at the bottom of the adjusting cavity 3. The rotational motion of the gear 809 is converted into the horizontal linear motion of the rack 810. The end of the rack 810 is fixedly connected to the inverted plate 801, ultimately pushing the inverted plate 801 to slide horizontally along the adjusting cavity 3, completing the power transmission and amplification, and ensuring that the lifting mechanism 8 can overcome the incremental resistance of the preload of the buffer spring 6.

[0032] In this embodiment, a limiting rod 811 is vertically slidably provided at the bottom of the adjusting cavity 3, and the top end of the limiting rod 811 is fixedly connected to the support ring 7.

[0033] Local working principle: When the support ring 7 moves vertically, the limiting rod 811 slides vertically along the bottom of the adjusting cavity 3, which guides the movement trajectory of the support ring 7 and prevents the support ring 7 from shifting or tilting during the force process.

[0034] In this embodiment, the rotating mechanism 12 includes a second rack 1201, a toothed ring 1202, a second strip groove 1203, and a connecting block 1204. The second rack 1201 is linearly slidably disposed inside the mounting cavity 9. The toothed ring 1202 is fixed to the outside of the adjusting knob 11 and meshes with the second rack 1201. The top of the mounting cavity 9 is provided with a second strip groove 1203 that communicates with the inside of the adjusting cavity 3. The connecting block 1204 is slidably disposed inside the second strip groove 1203. The upper and lower ends of the connecting block 1204 are fixedly connected to the second rack 1201 and the first rack 810, respectively.

[0035] Local working principle: The rack 810 in the lifting mechanism 8 moves horizontally, driving the rack 1201 to slide linearly along the inside of the mounting cavity 9 via the connecting block 1204 inside the slot 1203. The rack 1201 meshes with the gear ring 1202 fixed to the outside of the adjusting knob 11, converting the linear motion of the rack 1201 into the rotational motion of the gear ring 1202, which drives the adjusting knob 11 to rotate synchronously. Since the adjusting knob 11 is connected to the bottom of the adjustable hydraulic damper 10, its rotation directly changes the internal damping parameters of the adjustable hydraulic damper 10, realizing adaptive adjustment of the damping force, so that the damping force matches the preload of the buffer spring 6, enhancing the shock absorption effect.

[0036] In this embodiment, the limiting mechanism 14 includes a strip groove 1401, an L-shaped mounting plate 1402, a screw 1403, a baffle 1404, and a positioning component. The strip groove 1401 is formed at the four corners of the top of the carrier plate 2. The L-shaped mounting plate 1402 is slidably installed inside the strip groove 1401. The screw 1403 is rotatably installed between the two ends of the strip groove 1401, and the screw 1403 is threadedly connected to the L-shaped mounting plate 1402. The baffle 1404 is rotatably installed at one end of the top of the L-shaped mounting plate 1402. A positioning component is provided between the baffle 1404 and the L-shaped mounting plate 1402.

[0037] Local working principle: When adjusting the limiting mechanism 14, the screw 1403 between the two ends of the three strip grooves 1401 is rotated. Since the screw 1403 is threadedly connected to the L-shaped mounting plate 1402, the rotational motion of the screw 1403 is converted into the horizontal sliding of the L-shaped mounting plate 1402 along the three strip grooves 1401. By adjusting the spacing of the four L-shaped mounting plates 1402, materials of different sizes can be accommodated. Subsequently, the baffle 1404 on the top of the L-shaped mounting plate 1402 is rotated so that the baffle 1404 fits against the side of the material. The baffle 1404 is fixed by the positioning component, ultimately constraining the material from the four corners.

[0038] In this embodiment, the positioning component includes an insert plate 1405 and a slot 1406. The insert plate 1405 is rotatably mounted on the inner bottom of the baffle 1404, and the bottom of the baffle 1404 is provided with a groove that matches the insert plate 1405. The top of the L-shaped mounting plate 1402 is provided with a slot 1406 that matches the insert plate 1405.

[0039] Local working principle: Rotate the insert plate 1405 at the bottom of the inner side of the baffle 1404, so that the insert plate 1405 rotates out of the groove at the bottom of the baffle 1404 and is inserted into the slot 1406 at the top of the L-shaped mounting plate 1402, thereby locking and fixing the baffle 1404.

[0040] In this embodiment, the lifting plate 15 is made of high-strength aluminum alloy, and the top of the lifting plate 15 is provided with an anti-slip pad.

[0041] Partial working principle: The lifting plate 15 is made of high-strength aluminum alloy. While ensuring its structural strength is sufficient to bear the weight of the material, it effectively reduces the overall weight of the component, avoiding increased operating load on the hydraulic cylinder 13 due to excessive weight of the lifting plate 15, and extending the service life of the hydraulic cylinder 13. The anti-slip pad on the top of the lifting plate 15 increases the friction with the bottom of the material. During the lifting process of the lifting plate 15 driving the material to rise or fall, or during the operation of the guide vehicle, it can effectively prevent the material from sliding relative to the ground due to inertia or vibration, further improving the stability of material loading, unloading, and transportation.

[0042] Example 3 The solutions in Embodiment 1 and Embodiment 2 will be further described below with reference to their specific working methods. First, prepare for transportation by rotating the screw 1403 of the limiting mechanism 14 to drive the L-shaped mounting plate 1402 to slide along the strip groove 1401. Adjust the spacing of the four limiting mechanisms 14 according to the material size. Rotate the baffle 1404 to fit the side of the material, and insert the insert plate 1405 into the slot 1406 to fix the baffle 1404, thus completing the four-corner limiting of the material. If the material is difficult to load and unload, start the hydraulic cylinder 13, which drives the lifting plate 15 to rise and fall through the extension and retraction of the output shaft, adjusting the material to a suitable height. The high-strength aluminum alloy lifting plate 15, together with the top anti-slip pad, ensures that the material does not slide or tip over during loading and unloading.

[0043] After the material is placed on the carrier plate 2, the weight is sequentially transferred to the support rod 4 and the support plate 5. The support plate 5 presses down on the buffer spring 6 to generate an initial buffering force. The slight displacement of the carrier plate 2 drives the slider 805 to slide along the strip groove 804. Through the transmission of the lever 806, shaft 808, and gear 809, the power is transmitted to the rack 810. The rack 810 pushes the C-shaped plate 801 to move horizontally. The guide block 803 slides along the stepped guide groove 802 of the C-shaped plate 801, controlling the vertical movement of the support ring 7 and adjusting the preload of the buffer spring 6: the preload is small under light load to ensure high-frequency small-amplitude vibration absorption sensitivity; the preload is large under heavy load to suppress the shaking of the carrier plate 2.

[0044] As rack 1810 moves, it drives rack 281201 to slide along slot 283 via connecting block 1204. Rack 281201 meshes with gear ring 1202 and drives adjusting knob 11 to rotate, simultaneously adjusting the damping force of adjustable hydraulic damper 10, so that the damping force cooperates with spring preload to form a double shock absorption. During transportation, drive wheel 101 provides driving force, driven wheel 102 cooperates in steering, and anti-collision rubber ring 103 on the outside of the vehicle body can resist the risk of collision and stably transport materials.

[0045] The above description is merely a further embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope disclosed in the present invention, based on the technical solution and concept of the present invention, shall fall within the scope of protection of the present invention.

Claims

1. A shock-absorbing automated guided vehicle (AGV) for logistics, comprising a vehicle body (1), drive wheels (101) symmetrically mounted on the middle positions of both sides of the vehicle body (1), and driven wheels (102) mounted at the four corners of the bottom of the vehicle body (1); Its features : The top of the vehicle body (1) is horizontally provided with a carrier plate (2) for carrying materials. Each of the four corners inside the vehicle body (1) is provided with an independent adjustment cavity (3). At the four corners of the bottom of the carrier plate (2) corresponding to the adjustment cavity (3), a support rod (4) is vertically fixed. The ends of multiple support rods (4) away from the carrier plate (2) are slidably extended into the interior of the corresponding adjustment cavity (3), and the bottom end of the support rod (4) is fixedly connected to a support plate (5). The bottom of the adjusting cavity (3) is provided with a support ring (7) corresponding to the support plate (5). A buffer spring (6) is elastically provided between the top of the support ring (7) and the bottom of the support plate (5). The adjusting cavity (3) is equipped with a lifting mechanism (8). The lifting mechanism (8) is driven by the support ring (7) and is used to adaptively adjust the preload of the buffer spring (6) according to the load-bearing weight of the carrier plate (2). The bottom of the adjustment cavity (3) is provided with an installation cavity (9). An adjustable hydraulic damper (10) is vertically installed inside the installation cavity (9). The movable end of the adjustable hydraulic damper (10) passes through the inside of the support ring (7) and is fixedly connected to the bottom of the support plate (5). An adjustment knob (11) is provided at the bottom of the adjustable hydraulic damper (10). A rotating mechanism (12) is assembled inside the installation cavity (9). The rotating mechanism (12) is linked with the adjustment knob (11) and the lifting mechanism (8) respectively to synchronously adjust the damping force of the adjustable hydraulic damper (10). Limiting mechanisms (14) are installed at the four corners of the top of the carrier plate (2). The limiting mechanisms (14) can slide and adjust along the top of the carrier plate (2) to limit and fix materials of different sizes at the four corners.

2. The shock-absorbing automated guided vehicle for logistics according to claim 1, characterized in that... A collision protection ring (103) is fixed circumferentially on the bottom outer side of the vehicle body (1), and the collision protection ring (103) protrudes on the outer side of the vehicle body (1).

3. The shock-absorbing automated guided vehicle for logistics according to claim 1, characterized in that... A hydraulic cylinder (13) is fixedly installed at the middle position of the bottom end of the carrier plate (2). The output shaft of the hydraulic cylinder (13) extends vertically upward and is fixedly installed with a lifting plate (15). The lifting plate (15) is horizontally attached to the top of the carrier plate (2) to assist in the lifting and positioning of materials.

4. The shock-absorbing automated guided vehicle for logistics according to claim 1, characterized in that... The lifting mechanism (8) includes an inverted plate (801), a stepped guide groove (802), a guide block (803), and a telescopic assembly. The inverted plate (801) is horizontally slidably installed inside the adjusting cavity (3). The stepped guide groove (802) is symmetrically opened on the inner side of the inverted plate (801). The guide block (803) is symmetrically installed on both sides of the support ring (7), and the guide block (803) is slidably adapted to the stepped guide groove (802). The adjusting cavity (3) is provided with a telescopic assembly that drives the inverted plate (801) to slide horizontally.

5. A shock-absorbing automated guided vehicle for logistics according to claim 4, characterized in that... The telescopic assembly includes a strip groove (804), a slider (805), a lever (806), a through groove (807), a shaft (808), a gear (809), and a rack (810). The strip groove (804) is located on the side of the bottom of the carrier plate (2). The slider (805) is slidably disposed inside the strip groove (804). The lever (806) is hinged to the bottom end of the slider (805). The bottom end of the lever (806) extends into the interior of the adjustment cavity (3). The top of the adjustment cavity (3) is provided with a through groove (807) that is compatible with the lever (806). The shaft (808) is rotatably installed inside the adjustment cavity (3) through a bearing. A gear (809) is fitted on the shaft (808). The bottom end of the lever (806) is fixedly connected to the gear (809). A rack (810) that meshes with the gear (809) is horizontally slidably provided at the bottom of the adjustment cavity (3), and the end of the rack (810) is fixedly connected to the shaped plate (801).

6. A shock-absorbing automated guided vehicle for logistics according to claim 4, characterized in that... A limit rod (811) is vertically slidably installed at the bottom of the adjustment cavity (3), and the top end of the limit rod (811) is fixedly connected to the support ring (7).

7. A shock-absorbing automated guided vehicle for logistics according to claim 5, characterized in that... The rotating mechanism (12) includes a second rack (1201), a gear ring (1202), a second strip groove (1203), and a connecting block (1204). The second rack (1201) is linearly slidably disposed inside the mounting cavity (9). The gear ring (1202) is fixed on the outside of the adjusting knob (11) and meshes with the second rack (1201). The top of the mounting cavity (9) is provided with a second strip groove (1203) that communicates with the inside of the adjusting cavity (3). The connecting block (1204) is slidably disposed inside the second strip groove (1203). The upper and lower ends of the connecting block (1204) are fixedly connected to the second rack (1201) and the first rack (810), respectively.

8. A shock-absorbing automated guided vehicle for logistics according to claim 1, characterized in that... The limiting mechanism (14) includes a three-slotted groove (1401), an L-shaped mounting plate (1402), a screw (1403), a baffle (1404), and a positioning component. The three-slotted groove (1401) is located at the four corners of the top of the carrier plate (2). The L-shaped mounting plate (1402) is slidably installed inside the three-slotted groove (1401). The screw (1403) is rotatably installed between the two ends of the three-slotted groove (1401), and the screw (1403) is threadedly connected to the L-shaped mounting plate (1402). The baffle (1404) is rotatably installed at one end of the top of the L-shaped mounting plate (1402). A positioning component is provided between the baffle (1404) and the L-shaped mounting plate (1402).

9. A shock-absorbing automated guided vehicle for logistics according to claim 8, characterized in that... The positioning component includes an insert plate (1405) and a slot (1406). The insert plate (1405) is rotatably mounted on the inner bottom of the baffle (1404), and the bottom of the baffle (1404) is provided with a groove that matches the insert plate (1405). The top of the L-shaped mounting plate (1402) is provided with a slot (1406) that matches the insert plate (1405).

10. A shock-absorbing automated guided vehicle for logistics according to claim 3, characterized in that... The lifting plate (15) is made of high-strength aluminum alloy, and the top of the lifting plate (15) is equipped with an anti-slip pad.

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