Conveyor line position limiting and stopping device and cargo pallet loading / unloading transport method
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-08-14
Smart Images
Figure 2026527604000001_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the field of intelligent three-dimensional warehouse storage, and more specifically relates to a position limiting stop device for a conveyor line and a method for transporting goods pallets in and out of the warehouse.
Background Art
[0002] In an intelligent three-dimensional warehouse storage system composed of a conveyor line and a three-dimensional warehouse, generally, the process of loading and unloading goods is realized by the conveyor line. Conventional conveyor lines all control the stop of the conveyor line according to the signal of a photoelectric sensor. However, when the weight or material of the pallet goods does not match, it will cause a deviation in the stop position of the pallet on the conveyor line. As a result, when the shuttle car enters the conveyor line to pick up the goods, the lift plate of the shuttle car cannot face the lower part of the pallet goods, and the risk of the goods falling during transportation increases.
Summary of the Invention
Problems to be Solved by the Invention
[0003] In order to solve the deficiencies existing in the prior art, the present invention can accurately stop pallets loaded with goods of different weights or pallets of different materials at the same position every time, greatly reducing the risk of goods falling during transportation by the shuttle car, and can be applied to most scenarios of docking pallet goods through the conveyor line, and has a wide range of applications. The present invention provides a position limiting stop device for a conveyor line and a method for transporting goods pallets in and out of the warehouse.
Means for Solving the Problems
[0004] To achieve the above objective, the conveyor line position limiting stop device of the present invention includes a three-dimensional shelf, a transport mechanism, a shuttle vehicle, and running rails that intersect vertically and horizontally. The three-dimensional shelf and the transport mechanism are located above the running rails, and the shuttle vehicle is capable of traveling on the running rails and reciprocating below the three-dimensional shelf and the transport mechanism. A position limiting stop device is provided at one end of the transport mechanism that is close to the three-dimensional shelf. When a pallet is placed on the transport surface, and the transport mechanism transports it in the forward direction for receiving goods, the position limiting stop device makes contact with the pallet loaded with goods in a position limiting manner. When the transport belt transports it in the reverse direction for shipping goods, the pallet pushes the position limiting stop device downwards on the transport surface.
[0005] Furthermore, the transport mechanism includes two sets of transport frames installed in parallel on both sides of the travel rail, each of which is provided with a transport belt that can be driven in both forward and reverse directions along its length, and a position limiting stop device is provided on the side of either set of transport frames that is adjacent to each other, with the upper surface of the position limiting stop device protruding from the transport surface of the transport belt.
[0006] Furthermore, the position limiting stop device includes a position limiting plate and a rotating pin. A rotating hole is formed in the center of the position limiting plate, and the rotating pin passes through the rotating hole and is fixed to the side of the transport frame. The position limiting plate is rotatable relative to the transport frame around the rotating pin.
[0007] Furthermore, a swing adjustment groove is formed at the bottom of the position limiting plate, and a swing position limiting pin is provided in the swing adjustment groove. The swing position limiting pin passes through the swing adjustment groove and is fixed to the side of the transport frame. When the position limiting plate rotates relative to the transport frame around the rotation pin, the swing position limiting pin slides within the swing adjustment groove, limiting the rotation angle of the position limiting plate.
[0008] Furthermore, a position limiting section is formed on the upper part of the position limiting plate, extending diagonally upward from the side close to the center of the conveying frame. The side of the position limiting section close to the center of the conveying frame is a vertical position limiting surface, and the side of the position limiting section away from the center of the conveying frame is a transitional slope. In the initial state, the vertical position limiting surface of the position limiting section is higher than the conveying surface of the conveying belt.
[0009] Furthermore, weight-reducing holes are formed in the position-restricting section, and when the position-restricting stop device restricts the pallet's position, the weight-reducing holes formed in the position-restricting section of the position-restricting plate can cushion the impact force that the pallet exerts on the position-restricting section.
[0010] Furthermore, the method of transporting cargo pallets during the cargo pallet loading process for the conveyor line position limiting stop device is as follows: Step S1 involves the elevator lifting and lowering the pallet loaded with cargo onto the conveying surface of the conveying belt of the conveying mechanism, which is separated from the three-dimensional shelf. Step S2 involves activating the conveying mechanism and driving the conveying belt in the forward direction, thereby moving the pallet loaded with cargo onto the conveying surface of the conveying belt toward the three-dimensional shelf. Step S3: When a pallet loaded with cargo is driven by a conveyor belt, and one side of the support leg on the side of the pallet closest to the three-dimensional shelf comes into contact with the vertical position limiting surface, the position limiting plate rotates around the rotation pin in the direction away from the center of the conveyor frame of the position limiting section until the swinging position limiting pin comes into contact with one end of the swinging adjustment groove that is away from the center of the conveyor frame, and at this time the vertical position limiting surface comes into contact with the pallet in a position limiting manner. In the state of step S3, step S4 is performed such that the two photoelectric detection devices provided at both ends of the transport frame control and stop the drive mechanism provided below the transport frame, thereby preventing the transport belt from being driven. In step S4, the shuttle vehicle travels on the running rail located below the two conveyor belts, and makes contact with the position limiting plate in a position-limiting manner. At this time, the lift plate of the shuttle vehicle faces the underside of the pallet loaded with cargo in step S5. Step S6 includes the following steps: In the state of step S5, the lift plate of the shuttle vehicle is raised to lift the pallet loaded with cargo, then the pallet loaded with cargo is transported along the travel rail and placed on the storage rack to complete the receiving process.
[0011] Furthermore, the method of transporting cargo pallets during the cargo pallet retrieval process of the conveyor line position limiting stop device is as follows: Step S7 involves the shuttle vehicle transporting the pallet loaded with cargo to the transport surface at one end of the transport belt of the transport mechanism that is close to the three-dimensional shelf, Step S8 involves activating the conveying mechanism and driving the conveyor belt in the reverse direction, thereby moving the pallet loaded with cargo onto the conveying surface of the conveyor belt away from the three-dimensional shelf. Step S9: When a pallet loaded with cargo is driven by a conveyor belt, and the lower end contour of the support leg on the side of the pallet that is separated from the three-dimensional shelf comes into contact with the transition slope of the position limiting plate, the lower end contour of the lower support leg of the pallet loaded with cargo pushes down the position limiting part of the position limiting stop device along the transition slope, and in this process the position limiting plate rotates around the rotation pin in a direction approaching the center of the conveyor frame of the position limiting part until the position limiting plate descends below the conveyor surface under the action of the support leg of the pallet loaded with cargo, and in this process the upper end contour of the position limiting part is always in contact with the lower end contour of the pallet loaded with cargo, and the position limiting plate does not prevent the pallet loaded with cargo from moving together with the two conveyor belts. At this time, the cargo loaded on the pallet blocks the lasers emitted from the laser emitters of the two photoelectric detection devices located at both ends of the transport frame along the length of the transport frame, so that the lasers emitted from the laser emitters are not received by the light receiving devices of the two photoelectric detection devices, and at this time the photoelectric detection device controls and stops the drive mechanism located below the transport frame so that the transport belt is not driven, and at this time step S10 the bottom of the pallet loaded with cargo is located directly above the lifting plate of the elevator, Next, step S11 includes raising the lifting plate of the elevator to lift the pallet loaded with cargo, and raising and lowering the pallet loaded with cargo to the exit to complete the dispatch process. [Effects of the Invention]
[0012] The present invention provides a conveyor line position-limiting stop device and a cargo pallet loading / unloading transport method. By equipping the transport mechanism with a position-limiting stop device, it is possible to accurately stop pallets loaded with cargo of different weights or pallets made of different materials at the same position each time, without affecting the cargo unloading process. This ensures that when the shuttle vehicle enters the conveyor line to unload cargo, the pallet cargo is positioned in the middle of the shuttle vehicle's lift plate. This significantly reduces the risk of cargo shifting due to the pallet cargo not being positioned in the middle of the shuttle vehicle's lift plate, and the risk of cargo falling due to scraping against shelves during the transport process by the shuttle vehicle. Furthermore, it can be applied to most scenarios where pallet cargo is docked via a conveyor line, thus having a wide range of applications. [Brief explanation of the drawing]
[0013] [Figure 1] This is a schematic diagram illustrating application scenarios for the conveyor line position limiting and stopping device and the cargo pallet loading / unloading transport method of the present invention. [Figure 2] This is a schematic diagram of the conveyor line of the present invention. [Figure 3] This is a schematic diagram of the position-limiting stop device of the present invention. [Figure 4] This is a schematic diagram showing the mounting of the position-limiting stop device and the conveyor frame of the conveyor line according to the present invention. [Figure 5] This is a magnified view of a portion of the image, A. [Figure 6] This is a structural diagram of the conveyor line position limiting and stopping device and the shuttle vehicle entry process of the present invention. [Figure 7] This is a magnified view of part B. [Figure 8] This is a schematic diagram of the conveyor line position limiting and stopping device and the shuttle vehicle dispatch process of the present invention. [Figure 9] It is a partial enlarged view C.
Embodiments for Carrying out the Invention
[0014] Hereinafter, the present invention will be further described with reference to the drawings.
[0015] As shown in FIG. 1, the position limiting stop device of the conveyor line includes a running rail 4 intersecting vertically and horizontally. Above the running rail 4, a multi-story shelf 1 and a conveying mechanism 2 are installed. The multi-story shelf 1 and the conveying mechanism 2 can exchange goods by a shuttle car 3 capable of running on the running rail 4. The shuttle car 3 reciprocates below the multi-story shelf 1 and the conveying mechanism 2. At one end of the conveying mechanism 2 close to the multi-story shelf 1, a position limiting stop device 5 is provided. When the pallet 9 is placed on the conveying surface 17, when the conveying mechanism 2 conveys forward for warehousing, that is, when the pallet 9 moves from one end of the conveying mechanism 2 away from the multi-story shelf 1 to one end of the conveying mechanism 2 close to the multi-story shelf 1 by the drive of the conveying mechanism 2, the position limiting stop device 5 limits and contacts the pallet 9 loaded with goods. When the conveying belt 8 conveys in the reverse direction for shipping, the pallet 9 pushes down the position limiting stop device 5 below the conveying surface 17.
[0016] The transport mechanism 2 includes two sets of transport frames 7 installed in parallel on both sides of the running rail 4, the distance between the two sets of transport frames 7 being greater than the width of the running rail 4 and the width of the shuttle car 3, thereby ensuring that the shuttle car 3 can smoothly travel back and forth between the two sets of transport frames 7, each of the two sets of transport frames 7 being provided with one end close to the three-dimensional shelf 1 and the other end docking with the elevator, the two sets of transport frames 7 being provided with a transport belt 8 that can be driven in forward and reverse directions along its length, a drive mechanism capable of driving the transport belt 8 to transport in the forward or reverse direction is provided below the center of the transport frame 7, the transport belt 8 being transported in the forward or reverse direction along the length of the transport frame 7, a signal transmitting device and a signal receiving device of the photoelectric detection device 16 are provided on the sides of the two sets of transport frames 7 that are separated from each other, a position limiting stop device 5 is provided on the side of either set of transport frames 7 that is close to each other, and the upper surface of the position limiting stop device 5 is the transport surface 1 of the transport belt 8 Protruding from 7, the position-restricting stop device 5 is located between the two conveyor belts 8, and a pallet 9 loaded with cargo is placed on the conveying surface 17, with both sides of the lower end of the pallet 9 supported on the conveying surfaces 17 of the two conveyor belts 8, and a portion of the running rail 4 is located below the two conveyor belts 8 and is set higher than the drive mechanism, thereby ensuring that the shuttle vehicle 3 can move smoothly back and forth below the two conveyor belts 8, and the running surface of the portion of the running rail 4 located below the two conveyor belts 8 faces the central area of the lower surface of the pallet 9, thereby ensuring that when the shuttle vehicle 3 is located on the portion of the running rail 4 located below the two conveyor belts 8, the lift plate of the shuttle vehicle 3 is located below the pallet 9, and by providing a position-restricting plate on the portion of the running rail 4 located below the two conveyor belts 8, the lift plate of the shuttle vehicle 3 can face the lower surface of the pallet 9 when the shuttle vehicle 3 is in contact with the position-restricting plate 10 on the portion of the running rail 4 located below the two conveyor belts 8.
[0017] At both ends along the length direction of the conveying frame 7, a photoelectric detection device 16 is attached. The two photoelectric detection devices 16 are provided so as to be electrically connected to the conveyor belt 8, and both control the driving and stopping of the conveyor belt 8. Both include a laser emission device and a laser light receiving device. The two laser emission devices are attached to one conveying frame 7, and the two laser light receiving devices are attached to the other conveying frame 7. The two laser emission devices and the two laser light receiving devices are all attached to the sides of the two conveying frames 7 that are spaced apart from each other. When the pallet 9 loaded with goods is placed on the conveying surface 17, when the conveyor belt 8 conveys in the forward direction for storage, the position limiting stop device 5 makes position-limiting contact with the support leg on the side of the pallet 9 loaded with goods close to the three-dimensional shelf 1. At this time, on both sides of the pallet 9 along the length direction of the conveying frame 7, by blocking the laser emitted from the laser emission device of the two photoelectric detection devices 16 provided at both ends of the conveying frame 7, the light receiving devices of the two photoelectric detection devices 16 cannot receive the laser emitted from the laser emission device. At this time, the photoelectric detection device 16 controls and stops the drive mechanism provided below the conveying frame 7, whereby the conveyor belt 8 is not driven. When the conveyor belt 8 conveys in the reverse direction for shipment, the support leg on the side of the pallet 9 loaded with goods away from the three-dimensional shelf 1 pushes down the position limiting stop device 5 below the conveying surface 17. When the pallet 9 blocks the laser emitted from the laser emission device of the two photoelectric detection devices 16 provided at both ends of the conveying frame 7 on both sides along the length direction of the conveying frame 7, the light receiving devices of the two photoelectric detection devices 16 cannot receive the laser emitted from the laser emission device. At this time, the photoelectric detection device 16 controls and stops the drive mechanism provided below the conveying frame 7, whereby the conveyor belt 8 is not driven. At this time, the bottom of the pallet 9 loaded with goods is located directly above the lifting plate of the elevator.
[0018] The position limiting stop device 5 includes a position limiting plate 10 and a rotating pin 11. A rotating hole is formed in the center of the position limiting plate 10, and the rotating pin 11 passes through the rotating hole and is fixed to the side of the transport frame 7. When the radius of the pinhead of the rotating pin 11 is larger than the radius of the rotating hole, i.e., when the rotating pin 11 passes through the rotating hole and is fixed to the side of the transport frame 7, the position limiting plate 10 is sandwiched between the pinhead of the rotating pin 11 and the transport frame 7 on sides close to each other, the rotating pin 11 contacts one side of the position limiting plate 10 and one side of the transport frame 7, and the position limiting plate 10 is rotatable relative to the transport frame 7 around the rotating pin 11.
[0019] A swing adjustment groove 14, which is an arc-shaped groove provided coaxially with the rotation hole, is formed at the lower part of the position limiting plate 10. A swing position limiting pin 12 is provided in the swing adjustment groove 14, and the swing position limiting pin 12 passes through the swing adjustment groove 14 and is fixed to the side surface of the transport frame 7. When the position limiting plate 10 rotates relative to the transport frame 7 around the rotation pin 11, the swing position limiting pin 12 slides within the swing adjustment groove 14, limiting the rotation angle of the position limiting plate 10.
[0020] A position limiting section 15 is formed on the upper part of the position limiting plate 10, extending diagonally upward from the side away from the three-dimensional shelf 1. The side of the position limiting section 15 away from the three-dimensional shelf 1 is a vertical position limiting surface 18, and the side of the position limiting section 15 closer to the three-dimensional shelf 1 is a transition slope 19. In the initial state, the vertical position limiting surface 18 of the position limiting section 15 is higher than the conveying surface 17 of the conveying belt 8, and the side of the transition slope 19 closer to the three-dimensional shelf 1 is lower than the side of the transition slope 19 away from the three-dimensional shelf 1. In the process of the conveying belt 8 transporting in the forward direction for storage, when the support legs on the side of the pallet 9 closer to the three-dimensional shelf 1 come into contact with the vertical position limiting surface 18, under the action of the frictional force between the conveying belt 8 and the pallet 9, the pallet 9 is positioned against the position limiting plate 1. The position limiting plate 10 has an impact force relative to 0, and under the action of the impact force, the position limiting plate 10 rotates around the rotating pin 11 in the direction in which the position limiting portion 15 approaches the three-dimensional shelf 1 until the oscillating position limiting pin 12 contacts one end of the oscillating adjustment groove 14 that is close to the three-dimensional shelf 1. At this time, the position limiting plate 10 cannot rotate any further relative to the conveying frame 7 around the rotating pin 11, and the distance between the vertical position limiting surface 18 and the conveying surface 17 of the conveying belt 8 is slightly higher than the distance between the vertical position limiting surface 18 and the conveying surface 17 of the conveying belt 8 in the initial state. At this time, the vertical position limiting surface 18 contacts the pallet 9 in a position limiting manner, so that the pallet 9 cannot move together with the conveying belt 8. As the conveyor belt 8 is transported in the reverse direction for outbound transport, the lower end contour of the support leg on the side of the pallet 9 away from the three-dimensional shelf 1 pushes down the position limiting portion 15 of the pallet position limiting device 5 along the transition slope 19. During this process, the position limiting plate 10 rotates around the rotation pin 11 along the direction away from the three-dimensional shelf 1 of the position limiting portion 15 until the position limiting plate 10 descends below the conveyor surface 17 under the action of the support leg of the pallet 9. During this process, the upper end contour of the position limiting portion 15 is always in contact with the lower end contour of the pallet 9.
[0021] A weight-reducing hole 13 is formed in the position limiting section 15. The weight-reducing hole 13 is formed on the side of the position limiting section 15 that is away from the shelf 1 relative to the rotating pin 11. By forming it in this way, the weight of the side of the position limiting plate 10 that is away from the shelf 1 is smaller than the weight of the side of the position limiting plate 10 that is close to the shelf 1. As a result, in the initial state, that is, when the position limiting plate 10 is only subjected to its own gravity, the side of the position limiting plate 10 that is away from the shelf 1 protrudes above the conveying surface 17 of the conveying belt 8, and the side of the position limiting plate 10 that is close to the shelf 1 is located below the conveying surface 17 of the conveying belt 8.
[0022] The method of transporting cargo pallets during the cargo pallet loading process for a conveyor line position limiting and stopping device is as follows: Step S1 involves the elevator lifting and lowering the pallet 9 loaded with cargo to the transport surface 17 of the transport belt 8 of the transport mechanism 2, which is separated from the three-dimensional shelf 1. Step S2 involves activating the conveying mechanism 2 and driving the conveying belt 8 in the forward direction, thereby moving the pallet 9 from one end of the conveying belt 8 that is close to the three-dimensional shelf 1 to the other end of the conveying belt 8 that is farther away from the three-dimensional shelf 1, When one side of the support legs of the pallet 9 contacts the vertical position limiting surface 18, under the action of the frictional force between the conveyor belt 8 and the pallet 9, the pallet 9 exerts an impact force on the position limiting plate 10, and under the action of the impact force, the position limiting plate 10 rotates around the rotation pin 11 along the direction of the position limiting section 15 approaching the three-dimensional shelf 1 until the swinging position limiting pin 12 and one end of the swinging adjustment groove 14 that is close to the three-dimensional shelf 1 come into contact, and at this time the position limiting plate 10 cannot rotate any further around the rotation pin 11 relative to the conveyor frame 7, the distance between the vertical position limiting surface 18 and the conveying surface 17 of the conveyor belt 8 is slightly higher than the distance between the vertical position limiting surface 18 and the conveying surface 17 of the conveyor belt 8 in the initial state, and at this time the vertical position limiting surface 18 contacts the pallet 9 in a position limiting manner, thereby preventing the pallet 9 from moving together with the conveyor belt 8, in step S3. At this time, the pallet 9 blocks the lasers emitted from the laser emitters of the two photoelectric detection devices 16 located at both ends of the transport frame 7 on both sides along the length of the transport frame 7, so that the lasers emitted from the laser emitters are not received by the light receiving devices of the two photoelectric detection devices 16. At this time, the photoelectric detection devices 16 control the drive mechanism located below the transport frame 7 to stop it and prevent the transport belt 8 from being driven, in step S4. Subsequently, the shuttle vehicle 3 travels along a portion of the running rail 4 located below the two conveyor belts 8, and makes contact with the position restriction plate, at which point the lift plate of the shuttle vehicle 3 makes contact with the step S5 facing the underside of the pallet 9 loaded with cargo, The process then includes step S6, in which the lift plate of the shuttle vehicle 3 is raised to lift the pallet 9 loaded with cargo, and the pallet 9 loaded with cargo is transported to the storage shelf 1 to complete the warehousing process.
[0023] The method for transporting cargo pallets during the cargo pallet retrieval process of a conveyor line position limiting stop device is as follows: Step S7 involves the shuttle vehicle 3 transporting the pallet 9 loaded with cargo to the transport surface 17 at one end of the transport belt 8 of the transport mechanism 2 that is close to the three-dimensional shelf 1. Step S8 involves activating the conveying mechanism 2 and driving the conveying belt 8 in the reverse direction, thereby moving the pallet 9 from one end that is separated from the three-dimensional shelf 1 of the conveying mechanism 2 to the other end that is close to the three-dimensional shelf 1 of the conveying mechanism 2, When the lower end support legs of the cargo-loaded pallet 9 come into contact with the transition slope 19 of the position limiting plate 10, the lower end contour of the lower end support legs of the cargo-loaded pallet 9 pushes down the position limiting section 15 of the position limiting stop device 5 along the transition slope 19, and in this process, the position limiting plate 10 rotates around the rotation pin 11 in a direction approaching the center of the transport frame 7 of the position limiting section 15 until the position limiting plate 10 descends below the transport surface 17 under the action of the support legs of the cargo-loaded pallet 9, and in this process, the upper end contour of the position limiting section 15 is always in contact with the lower end contour of the cargo-loaded pallet 9, and the position limiting plate 10 does not prevent the cargo-loaded pallet 9 from moving together with the two transport belts 8 in step S9, At this time, the cargo loaded on the pallet 9 blocks the lasers emitted from the laser emitters of the two photoelectric detection devices 16 located at both ends of the transport frame 7 along the length of the transport frame 7, so that the lasers emitted from the laser emitters are not received by the light receiving devices of the two photoelectric detection devices 16, and at this time the photoelectric detection devices 16 control and stop the drive mechanism located below the transport frame 7 so that the transport belt 8 is not driven, and at this time the bottom of the pallet 9 loaded with cargo is positioned directly above the lifting plate of the elevator, step S10, Next, step S11 includes raising the lifting plate of the elevator to lift the pallet 9 loaded with cargo, and raising and lowering the pallet 9 loaded with cargo to the exit, thereby completing the dispatch process.
[0024] The above is a first embodiment of the conveyor line position limiting stop device and cargo pallet loading / unloading transport method of the present invention, and in specific situations, the present invention further has second and third embodiments.
[0025] In the second embodiment of this technology, specifically, when the cargo loaded on the pallet 9 placed on the transport mechanism 2 is a fragile item, it is necessary to avoid the pallet 9 colliding with and coming into contact with the position limiting stop device 5. Therefore, a vertical electromagnetic controller can be suspended from the support leg of the pallet 9 on the side closer to the position limiting stop device 5. An electromagnet controllable by remote control is attached to the electromagnetic controller, and a magnet is attached to the side of the lower part of the transport belt 8 that is close to end A of the lower part of the position limiting plate 10. When the electromagnetic controller is suspended from the support leg of the pallet 9 on the side closer to the position limiting stop device 5, the electromagnet of the electromagnetic controller is located below the transport surface 17 of the transport belt 8 and faces the magnet at the bottom of the position limiting plate 10, and a repulsive force is generated between the electromagnet of the electromagnetic controller and the magnet at the bottom of the position limiting plate 10. When a pallet 9 loaded with fragile items is placed on the conveying surface 17 of two sets of conveyor belts 8, the electromagnetic magnet of the electromagnetic controller is activated by the remote control. Then, the pallet 9 loaded with fragile items is moved toward the position limiting stop device 5 by the drive of the two sets of conveyor belts 8. In this process, the electromagnetic magnet of the electromagnetic controller and the magnet of the position limiting plate 10 repel each other, causing the position limiting plate 10 to rotate around the rotation pin 11 toward the center of the conveying frame 7 of the position limiting section 15 until the position limiting plate 10 descends below the conveying surface 17 by the action of the support legs of the pallet 9 loaded with cargo. In this way, the pallet 9 loaded with fragile items does not collide with the position limiting stop device 5 during the process of being transported on the conveyor line. After that, steps S4, S5, and S6 are performed to complete the receiving process.
[0026] In the third embodiment of this technology, when cargo on the three-dimensional shelf 1 needs to be inspected before being released, the position restriction stop device 5 needs to restrict the position of the pallet 9 loaded with the cargo to be released. An inspection device provided at one end of the transport mechanism 2 adjacent to the three-dimensional shelf 1 scans and inspects the cargo to be released. The position restriction plate 10 of the position restriction stop device 5 is provided with a position restriction pin hole 20, which is located between the rotating pin 11 and the swinging position restriction pin 12 and is offset from the center of the transport frame 7. Inside the transport frame 7 on which the position restriction stop device 5 is provided, an electric telescopic device is provided relative to the position restriction stop device 5, and the telescopic part of the electric telescopic device has a position restriction With the limiting pin provided, in the initial state, that is, when the position limiting plate 10 is subjected only by its own gravity, the side of the position limiting plate 10 that is close to the center of the transport frame 7 protrudes above the transport surface 17 of the transport belt 8, and the side of the position limiting plate 10 that is farther away from the center of the transport frame 7 is located below the transport surface 17 of the transport belt 8. At this time, the telescopic part of the electric telescopic device provided inside the transport frame relative to the position limiting stop device 5 extends along the direction toward the position limiting stop device 5, and the position limiting pin provided in the telescopic part of the electric telescopic device can pass through the position limiting pin hole 20, thereby preventing the position limiting plate 10 from rotating around the rotation pin 11.When the lift plate of the shuttle vehicle 3 is raised upward and the pallet 9 loaded with outgoing cargo is positioned on the conveying surface 17 of the conveying belt 8 that transports it in the reverse direction toward the three-dimensional shelf 1 of the conveying mechanism 2, the extension and retraction part of the electric telescopic device is controlled by the remote control to extend it toward the direction toward the position limiting stop device 5. As a result, the limiting pin provided on the extension and retraction part of the electric telescopic device passes through the position limiting pin hole 20, and at this time, the pallet 9 loaded with outgoing cargo approaches the three-dimensional shelf 1 of the position limiting part 15 on the position limiting plate 10 due to the drive of the conveying belt 8 that transports it in the reverse direction. The transition slope 19 on the side where the extension occurs is connected, but at this time, the position limiting pin provided in the extension part of the electric telescopic device is inserted into the position limiting pin hole 20, so the position limiting plate 10 cannot rotate around the rotation pin 11, and the lower end of the support leg on the side of the pallet 9 loaded with the outgoing cargo that is close to the position limiting stop device 5 cannot push down the position limiting plate 10, so the position limiting stop device 5 limits the position of the pallet 9 loaded with the outgoing cargo, and the inspection device provided at one end of the transport mechanism 2 that is close to the three-dimensional shelf 1 performs a scanning inspection on the cargo that is about to be outgoing. If the scanning detection result is satisfactory, the remote control controls the telescopic part of the electric telescopic device to retract it in a direction away from the position limiting stop device 5, thereby disengaging the limiting pin provided in the telescopic part of the electric telescopic device from the position limiting pin hole 20. As a result, the position limiting plate 10 rotates around the rotation pin 11 in a direction approaching the center of the transport frame 7 of the position limiting part 15, under the action of the support legs of the pallet 9 loaded with the outgoing cargo. At this time, the pallet 9 loaded with the outgoing cargo can be smoothly transported by the transport mechanism 2. After that, steps S10 and S11 are performed to complete the outgoing process.
[0027] The above are preferred embodiments of the present invention. Those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered to fall within the scope of protection of the present invention.
Claims
1. The system includes a three-dimensional shelf (1), a transport mechanism (2), a shuttle vehicle (3), and intersecting rails (4) running vertically and horizontally. The three-dimensional shelf (1) and the transport mechanism (2) are located above the rails (4) and do not come into contact with each other. The shuttle vehicle (3) is capable of traveling on the rails (4) and reciprocates below the three-dimensional shelf (1) and the transport mechanism (2). A position-limiting stop device (5) is provided at one end of the transport mechanism (2) that is close to the three-dimensional shelf (1). When a pallet (9) is placed on the transport surface (17), if the transport mechanism (2) transports it in the forward direction for storage, the position-limiting stop device (5) comes into contact with the pallet (9) loaded with cargo in a position-limiting manner. If the transport belt (8) transports it in the reverse direction for delivery, the pallet (9) pushes the position-limiting stop device (5) downwards on the transport surface (17). A conveyor line position limiting and stopping device characterized by the following features.
2. The transport mechanism (2) includes two sets of transport frames (7) installed in parallel on both sides of the running rail (4), each of the two sets of transport frames (7) is provided with a transport belt (8) that can be driven in forward and reverse directions along its length, and a position limiting stop device (5) is provided on the side of either set of transport frames (7) that is close to each other, and the upper surface of the position limiting stop device (5) protrudes from the transport surface of the transport belt (8). The conveyor line position limiting and stopping device according to feature 1.
3. The position limiting stop device (5) includes a position limiting plate (10) and a rotating pin (11), wherein a rotating hole is formed in the center of the position limiting plate (10), the rotating pin (11) passes through the rotating hole and is fixed to the side surface of the transport frame (7), and the position limiting plate (10) is rotatable relative to the transport frame (7) about the rotating pin (11). The conveyor line position limiting and stopping device according to feature 2.
4. A swing adjustment groove (14) is formed in the lower part of the position limiting plate (10), and a swing position limiting pin (12) is provided in the swing adjustment groove (14). The swing position limiting pin (12) passes through the swing adjustment groove (14) and is fixed to the side surface of the transport frame (7). When the position limiting plate (10) rotates relative to the transport frame (7) about the rotation pin (11), the swing position limiting pin (12) slides within the swing adjustment groove (14), limiting the rotation angle of the position limiting plate (10). The conveyor line position limiting and stopping device according to feature 3.
5. A position limiting portion (15) is formed on the upper part of the position limiting plate (10), extending diagonally upward from the side close to the center of the conveying frame (7). The side of the position limiting portion (15) close to the center of the conveying frame (7) is a vertical position limiting surface (18), and the side of the position limiting portion (15) away from the center of the conveying frame (7) is a transitional slope (19). In the initial state, the vertical position limiting surface (18) of the position limiting portion (15) is higher than the conveying surface (17) of the conveying belt (8). The conveyor line position limiting and stopping device according to feature 4.
6. A weight-reducing hole (13) is formed in the position limiting portion (15), and the weight-reducing hole (13) is formed on the side of the position limiting portion (15) that is spaced away from the three-dimensional shelf (1) relative to the rotating pin (11). The conveyor line position limiting and stopping device according to feature 5.
7. Step S1 involves the elevator lifting and lowering the pallet (9) loaded with cargo to the conveying surface (17) of the conveying belt (8) of the conveying mechanism (2), which is separated from the three-dimensional shelf (1). Step S2 involves activating the conveying mechanism (2) and driving the conveying belt (8) in the forward direction, thereby moving the pallet (9) with cargo loaded on the conveying surface (17) of the conveying belt (8) toward the three-dimensional shelf (1), Step S3 is performed when the pallet (9) loaded with cargo is driven by the conveyor belt (8), and one side of the support leg of the pallet (9) on the side closest to the three-dimensional shelf (1) comes into contact with the vertical position limiting surface (18), and the position limiting plate (10) rotates around the rotating pin (11) in the direction away from the center of the conveyor frame (7) of the position limiting part (15) until the swinging position limiting pin (12) comes into contact with one end of the swinging adjustment groove (14) that is spaced away from the center of the conveyor frame (7), and at this time the vertical position limiting surface (18) comes into contact with the pallet (9) in a position-limiting manner, In the state of step S3, step S4 is performed such that the two photoelectric detection devices (16) provided at both ends of the transport frame (7) control and stop the drive mechanism provided below the transport frame (7), thereby preventing the transport belt (8) from being driven. In step S4, the shuttle vehicle (3) travels on the travel rail (4) located below the two conveyor belts (8), and makes contact with the position limiting plate (10) in a position-limiting manner, and at this time the lift plate of the shuttle vehicle (3) faces the lower surface of the pallet (9) loaded with cargo in step S5, Step S6 includes the following steps: In the state of step S5, the lift plate of the shuttle vehicle (3) is raised to lift the pallet (9) loaded with cargo, then the pallet (9) loaded with cargo is transported along the travel rail (4) and placed on the three-dimensional shelf (1) to complete the warehousing process. A method for transporting cargo pallets during the cargo pallet receiving process of a conveyor line position limiting stop device according to feature 5.
8. Step S7 involves the shuttle vehicle (3) transporting the pallet (9) loaded with cargo to the transport surface (17) at one end of the transport belt (8) of the transport mechanism (2) that is close to the three-dimensional shelf (1), Step S8 involves activating the conveying mechanism (2) and driving the conveying belt (8) in the reverse direction, thereby moving the pallet (9) with cargo loaded on the conveying surface (17) of the conveying belt (8) in a direction away from the three-dimensional shelf (1), When the pallet (9) loaded with cargo is driven by the conveyor belt (8), and the lower end contour of the support leg on the side of the pallet (9) that is separated from the three-dimensional shelf (1) comes into contact with the transition slope (19) of the position limiting plate (10), the lower end contour of the lower end support leg of the pallet (9) loaded with cargo pushes down the position limiting part (15) of the position limiting stop device (5) along the transition slope (19), and in this process, the position limiting plate (10) is moved by the support leg of the pallet (9) loaded with cargo. Step S9, in which the position limiting plate (10) rotates around the rotating pin (11) in a direction approaching the center of the transport frame (7) of the position limiting section (15) until it descends below the transport surface (17) under operation, and in this process the upper end contour of the position limiting section (15) is always in contact with the lower end contour of the pallet (9) loaded with cargo, and the position limiting plate (10) does not prevent the pallet (9) loaded with cargo from moving together with the two transport belts (8), At this time, the cargo loaded on the pallet (9) blocks the laser emitted from the laser emitters of the two photoelectric detection devices (16) located at both ends of the transport frame (7) along the length of the transport frame (7), and the laser emitted from the laser emitters is not received by the light receiving devices of the two photoelectric detection devices (16). At this time, the photoelectric detection device (16) controls and stops the drive mechanism located below the transport frame (7) so as not to drive the transport belt (8). At this time, step S10 is reached where the bottom of the pallet (9) loaded with cargo is directly above the lifting plate of the elevator. Next, step S11 includes raising the lifting plate of the elevator to lift the pallet (9) loaded with cargo, and raising and lowering the pallet (9) loaded with cargo to the exit, thereby completing the exit process. A method for transporting cargo pallets during the cargo pallet retrieval process of a conveyor line position limiting stop device according to feature 5.