Conveying line limiting and stopping device and carrying method for goods tray warehouse-in and warehouse-out

Abstract

The conveying line limiting and stopping device comprises a three-dimensional goods shelf, a conveying mechanism, a shuttle vehicle and criss-cross running rails, the three-dimensional goods shelf and the conveying mechanism are arranged above the running rails, and the shuttle vehicle movably runs on the running rails and shuttles below the three-dimensional goods shelf and the conveying mechanism; the end, close to the stereoscopic warehouse, of the conveying mechanism is provided with a limiting stopping device. When the trays are placed on the conveying face, if the conveying mechanism conveys the cargoes in the forward direction for warehousing, the limiting stopping device makes limiting contact with the trays bearing the cargoes; if the conveyor belt reversely conveys for warehousing, the tray downwards presses the limiting and stopping device to the position below the conveying surface; according to the shuttle vehicle, pallets bearing goods of different weights or pallets made of different materials can accurately stop at the same position each time, the risk that the goods fall in the shuttle vehicle carrying process is greatly reduced, and the shuttle vehicle can be applied to most scenes where pallet goods butt joint is conducted through a conveying line.

Description

Technical Field

[0001] The present invention belongs to the field of intelligent three-dimensional warehousing, and more specifically relates to a conveyor line limit stop device and a method for transporting cargo pallets in and out of a warehouse. Background Art

[0002] In the intelligent three-dimensional storage system composed of conveyor lines and three-dimensional warehouses, the goods are generally put in and out of the warehouse through the conveyor lines. The existing conveyor lines are controlled to stop by the signals of photoelectric sensors. However, when the weight or material of the pallet goods is inconsistent, the parking position of the pallet on the transport line will deviate. As a result, when the shuttle car enters the conveyor line to pick up the goods, the lifting plate of the shuttle car cannot be directly under the pallet goods, increasing the risk of goods falling during the handling process. Summary of the invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a conveyor line limit stop device and a method for transporting cargo pallets in and out of a warehouse, which can enable pallets carrying cargo of different weights or pallets of different materials to stop accurately at the same position each time, can greatly reduce the risk of cargo falling during the shuttle vehicle's transportation process, and can be applied to most scenarios where pallet cargo is docked through transportation lines, and has a wide range of applications.

[0004] Technical solution: To achieve the above-mentioned purpose, a conveyor line limit stop device and a method for transporting cargo pallets in and out of the warehouse of the present invention include a three-dimensional shelf, a conveying mechanism, a shuttle car and criss-crossing travel tracks, the three-dimensional shelf and the conveying mechanism are located above the travel tracks, the shuttle car moves on the travel tracks, and the shuttle car shuttles below the three-dimensional shelf and the conveying mechanism; a limit stop device is provided at one end of the conveying mechanism close to the three-dimensional warehouse; when the pallet is placed on the conveying surface, if the conveying mechanism conveys forward for warehousing, the limit stop device is in limit contact with the pallet carrying the goods; if the conveyor belt conveys reversely for out of the warehouse, the pallet presses the limit stop device down to below the conveying surface.

[0005] Furthermore, the conveying mechanism includes two groups of conveying frames arranged in parallel on both sides of the traveling track, and conveyor belts that can be transmitted forward and reverse are arranged on the two groups of conveying frames along the length direction. A limit stop device is arranged on the side close to each other on any group of conveying frames, and the upper surface of the limit stop device protrudes from the conveying surface of the conveyor belt.

[0006] Furthermore, the limit stop device includes a limit plate and a rotating pin. A rotating hole is opened in the middle of the limit plate. The rotating pin passes through the rotating hole and is fixed on the side of the conveyor frame. The limit plate can rotate around the rotating pin relative to the conveyor frame.

[0007] Furthermore, a swing adjustment groove is opened at the lower part of the limit plate, and a swing limit pin is arranged in the swing adjustment groove. The swing limit pin passes through the swing adjustment groove and is fixed on the side of the conveyor frame. When the limit plate rotates around the rotating pin relative to the conveyor frame, the swing limit pin slides in the swing adjustment groove and limits the rotation angle of the limit plate.

[0008] Furthermore, a limiting portion is extended obliquely upward from one side of the upper portion of the limiting plate near the center of the conveying frame, the side of the limiting portion near the center of the conveying frame is a vertical limiting surface, and the side of the limiting portion away from the center of the conveying frame is a transition inclined surface. In the initial state, the vertical limiting surface of the limiting portion is higher than the conveying surface of the conveyor belt.

[0009] Furthermore, a hollow hole is provided on the limiting portion. When the limiting stop device limits the pallet, the hollow hole provided on the limiting portion of the limiting plate can buffer the impact force of the pallet on the limiting portion.

[0010] Furthermore, a method for transporting a shuttle vehicle of a conveyor line limit stop device into storage is provided.

[0011] Step S1: The lifter lifts and transports the pallet carrying the goods to the conveying surface of the conveyor belt of the conveying mechanism away from the stereoscopic warehouse;

[0012] Step S2: starting the conveying mechanism to make the conveyor belt drive in the forward direction, so that the pallet carrying the goods on the conveying surface of the conveyor belt moves toward the direction close to the three-dimensional shelf;

[0013] Step S3: When the pallet carrying the goods is driven by the conveyor belt, and one side of the support leg of the pallet close to the stereoscopic warehouse contacts the vertical limit surface, the limit plate rotates around the rotating pin in the direction of the limit portion away from the center of the conveyor frame until the swing limit pin and the end of the swing adjustment slot away from the center of the conveyor frame are pressed and contacted, and at this time, the vertical limit surface contacts the pallet limit;

[0014] Step S4: In the state of step S3, two photoelectric detection devices arranged at both ends of the conveyor frame control the driving mechanism arranged below the conveyor frame to stop, so that the conveyor belt is no longer in transmission;

[0015] Step S5: In the state of step S4, the shuttle vehicle travels to a section of the travel track located below the two conveyor belts and contacts the limit plate. At this time, the lifting plate of the shuttle vehicle is facing the lower surface of the pallet carrying the goods;

[0016] Step S6: In the state of step S5, the lifting plate of the shuttle car rises to lift the pallet carrying the goods, and then transports the pallet carrying the goods along the travel track and places it in the stereoscopic warehouse, completing the warehousing process.

[0017] Furthermore, a method for transporting a shuttle vehicle of a conveyor line limit stop device during a warehouse exit process is provided.

[0018] Step S7: The shuttle transports the pallet carrying the goods to the conveying surface of the conveyor belt of the conveying mechanism close to one end of the stereoscopic warehouse;

[0019] Step S8: starting the conveying mechanism to drive the conveyor belt in the reverse direction, so that the pallet carrying the goods on the conveying surface of the conveyor belt moves away from the three-dimensional shelf;

[0020] Step S9: When the pallet carrying goods is driven by the conveyor belt, and the lower end contour of the support leg of the pallet carrying goods away from the stereoscopic warehouse contacts the transition slope on the limit plate, the lower end contour of the lower support leg of the pallet carrying goods presses down the limit part of the limit stop device along the transition slope. During this process, the limit plate rotates around the rotating pin in the direction of the limit part close to the center of the conveyor frame until the limit plate is lowered to the bottom of the conveying surface under the action of the support leg of the pallet carrying goods. During this process, the upper end contour of the limit part is always in contact with the lower end contour of the pallet carrying goods, and the limit plate does not prevent the pallet carrying goods from moving along the two conveyor belts.

[0021] Step S10: At this time, the goods carried on the pallet block the lasers emitted by the laser emitting devices of the two photoelectric detection devices arranged at both ends of the conveyor frame along the length direction of the conveyor frame, and the receiving devices of the two photoelectric detection devices cannot receive the lasers emitted by the laser emitting devices. At this time, the photoelectric detection device controls the driving mechanism arranged below the conveyor frame to stop, so that the conveyor belt is no longer in transmission. At this time, the bottom of the pallet carrying the goods is located directly above the lifting plate of the elevator;

[0022] Step S11: Then the lifting plate of the elevator rises to lift the pallet carrying the goods, and lifts the pallet carrying the goods to the warehouse exit, thereby completing the warehouse exit process.

[0023] Beneficial effect: A conveyor line limit stop device and a method for transporting cargo pallets in and out of a warehouse of the present invention, by arranging a pallet limit stop device on a conveying mechanism, can enable pallets carrying cargo of different weights or pallets of different materials to stop accurately at the same position each time, and will not cause any impact on the cargo outbound process, thereby ensuring that when the shuttle enters the conveyor line to pick up cargo, the pallet cargo is located in the center position of the shuttle lift plate, which can greatly reduce the risk of cargo deviation caused by the pallet cargo not being in the center position of the shuttle lift plate, and the risk of cargo falling due to the shuttle scraping against the shelf during transportation, and can be applied to most scenarios of pallet cargo docking through transportation lines, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of an application scenario of a conveyor line limit stop device and a method for transporting cargo pallets in and out of a warehouse according to the present invention;

[0025] Figure 2 It is a schematic diagram of the transport line structure of the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the limit stop device of the present invention;

[0027] Figure 4 It is a schematic diagram of the installation of the limit stop device of the present invention and the transport frame of the transport line;

[0028] Figure 5 A is a partial enlarged view;

[0029] Figure 6 It is a schematic diagram of a conveyor line limit stop device and a shuttle vehicle storage process of the present invention;

[0030] Figure 7 It is a partial enlarged view B;

[0031] Figure 8 It is a schematic diagram of a conveyor line limit stop device and a shuttle vehicle out of the warehouse process of the present invention;

[0032] Fig. 9 A partial enlarged view C is shown. DETAILED DESCRIPTION

[0033] The present invention will be further described below in conjunction with the accompanying drawings.

[0034] As attached Figure 1 As shown, a conveyor line limit stop device and a method for transporting cargo pallets in and out of a warehouse include criss-cross running tracks 4, a three-dimensional warehouse 1 and a conveying mechanism 2 are arranged above the running tracks 4, the three-dimensional warehouse 1 and the conveying mechanism 2 can exchange cargo through a shuttle vehicle 3 that moves flexibly on the running tracks 4, and the shuttle vehicle 3 shuttles under the three-dimensional shelf 1 and the conveying mechanism 2; a limit stop device 5 is arranged on the end of the conveying mechanism 2 close to the three-dimensional warehouse 1; when a pallet 9 is placed on a conveying surface 17, if the conveying mechanism 2 is transported forward for warehousing, that is, the pallet 9 is driven by the transmission mechanism 2 to move from the end of the conveying mechanism 2 away from the three-dimensional warehouse 1 to the end of the conveying mechanism 2 close to the three-dimensional warehouse 1, then the limit stop device 5 is in limit contact with the pallet 9 carrying the cargo; if the conveyor belt 8 is transported in the reverse direction for out of the warehouse, then the pallet 9 presses the limit stop device 5 down to below the conveying surface 17.

[0035] The conveying mechanism 2 includes two groups of conveying frames 7 arranged in parallel on both sides of the travel track 4, and the spacing between the two conveying frames 7 is greater than the width of the travel track 4 and the width of the shuttle vehicle 3, so as to ensure that the shuttle vehicle 3 can smoothly shuttle between the two conveying frames 7. One end of the two conveying frames 7 is close to the stereoscopic warehouse 1, and the other end is connected to the elevator; a conveyor belt 8 that can be driven forward and reverse is arranged on the two groups of conveying frames 7 along the length direction, and a driving mechanism is arranged below the center of the conveying frame 7. The driving mechanism can drive the conveyor belt 8 to transmit forward or reversely, so that the conveyor belt 8 can be transmitted forward or reversely along the length direction of the conveying frame 7. A signal sending device and a signal receiving device of the photoelectric detection device 16 are respectively arranged on the side of the two groups of conveying frames 7 that are away from each other, and a limit stop device 5 is arranged on the side of any group of transmission conveying frames 7 that are close to each other, and the upper surface of the limit stop device 5 protrudes The pallet 9 is placed on the conveying surface of the conveyor belt 17, and the pallet limiting device 5 is between the two conveyor belts 8. A pallet 9 carrying goods is placed on the conveying surface 17. Both sides of the lower end of the pallet 9 are mounted on the conveying surface 17 of the two transmission belts 8. A section of the running track 4 is located below the two conveyor belts 8 and is higher than the driving mechanism, so as to ensure that the shuttle vehicle 3 can smoothly shuttle under the two conveyor belts. The running surface of the section of the running track 4 located below the two conveyor belts 8 is directly opposite to the central area of ​​the lower surface of the pallet 9, so as to ensure that when the shuttle vehicle 3 is on the section of the running track 4 located below the two conveyor belts 8, the lifting plate of the shuttle vehicle 3 is located below the pallet 9. A limiting plate can be set on the section of the running track 4 located below the two conveyor belts 8, so that when the shuttle vehicle 3 contacts the limiting plate 10 on the section of the running track 4 located below the two conveyor belts 8, the lifting plate of the shuttle vehicle 3 is directly opposite to the lower surface of the pallet 9.

[0036] Photoelectric detection devices 16 are installed at both ends of the conveyor frame 7 in the extension direction. The two photoelectric detection devices 16 are electrically connected to the conveyor belt 8. The two photoelectric detection devices 16 jointly control the transmission and stop of the conveyor belt 8. The two photoelectric detection devices 16 include a laser emitting device and a laser receiving device. The two laser emitting devices are installed on one conveyor frame 7, and the two laser receiving devices are installed on the other conveyor frame 7. The two laser emitting devices and the two laser receiving devices are installed on the side of the two conveyor frames 7 away from each other. When the pallet 9 carrying the goods is placed on the conveying surface 17, if the conveyor belt 8 is transported forward for storage, when the limit stop device 5 contacts the support leg of the pallet 9 carrying the goods close to the side of the stereoscopic warehouse 1: at this time, the pallet 9 blocks the laser emission devices of the two photoelectric detection devices 16 set at both ends of the conveyor frame 7 along both sides of the length direction of the conveyor frame 7, so that the receiving devices of the two photoelectric detection devices 16 cannot receive the laser emission devices. At this time, the photoelectric detection device controls the driving mechanism set under the conveyor frame 7 to stop, so that the conveyor belt 8 stops transmitting. If the conveyor belt 8 When the goods are transported in reverse for warehousing, the support leg of the pallet 9 carrying the goods away from the side of the stereoscopic warehouse 1 presses the limit stop device 5 down to below the conveying surface 17. When the pallet 9 blocks the laser emitted by the laser emitting devices of the two photoelectric detection devices 16 arranged at both ends of the conveying frame 7 along the length direction of the conveying frame 7 on both sides, the receiving devices of the two photoelectric detection devices 16 cannot receive the laser emitted by the laser emitting device. At this time, the photoelectric detection device controls the driving mechanism arranged under the conveying frame 7 to stop, so that the conveyor belt 8 stops transmitting. At this time, the bottom of the pallet 9 carrying the goods is located directly above the lifting plate of the elevator.

[0037] The limit stop device 5 includes a limit plate 10 and a rotating pin 11. A rotating hole is opened in the middle of the limit plate 10. The rotating pin 11 passes through the rotating hole and is fixed on the side of the conveying frame 7. The radius of the pin head of the rotating pin 11 is larger than the radius of the rotating hole. That is, when the rotating pin 11 passes through the rotating hole and is fixed on the side of the conveying frame 7, the limit plate 10 is clamped on the side where the pin head of the rotating pin 11 and the conveying frame 7 are close to each other. The rotating pin 11 makes one side of the limit plate 10 contact with one side of the conveying frame 7, and the limit plate 10 can rotate around the rotating pin 11 relative to the conveying frame 7.

[0038] A swing adjustment groove 14 is provided at the lower part of the limit plate 10. The adjustment groove 14 is an arc groove arranged coaxially with the rotating hole. A swing limit pin 12 is provided in the swing adjustment groove 14. The swing limit pin 12 passes through the swing adjustment groove 14 and is fixed on the side of the conveyor frame 7. When the limit plate 10 rotates around the rotating pin 11 relative to the conveyor frame 7, the swing limit pin 12 slides in the swing adjustment groove 14 and limits the rotation angle of the limit plate 10.

[0039] A limiting portion 15 is extended obliquely upward from the side of the upper part of the limiting plate 10 away from the stereoscopic warehouse 1, and the side of the limiting portion 15 away from the stereoscopic warehouse 1 is a vertical limiting surface 18, and the side of the limiting portion 15 close to the stereoscopic warehouse 1 is a transition slope 19. In the initial state, the vertical limiting surface 18 of the limiting portion 15 is higher than the conveying surface 17 of the conveyor belt 8, and the side of the transition slope 19 close to the stereoscopic warehouse 1 is lower than the side of the transition slope 19 away from the stereoscopic warehouse 1. When the conveyor belt 8 is transported forward for warehousing, when the support leg of the pallet 9 close to the side of the stereoscopic warehouse 1 contacts the vertical limiting surface 18, under the action of the friction between the conveyor belt 8 and the pallet 9, the pallet 9 has an impact force on the limiting plate 10. Under the action of the above-mentioned impact force, the limiting plate 10 rotates around the rotating pin 11 along the direction of the limiting portion 15 close to the stereoscopic warehouse 1 until the swing limiting pin 12 and the swing adjusting slot 14 are close to the stereoscopic warehouse 1. One end of the three-dimensional warehouse 1 is pressed and contacted, and at this time the limit plate 10 cannot continue to rotate around the rotating pin 11 relative to the conveying frame 7, and the distance between the vertical limit surface 18 and the conveying surface 17 of the conveyor belt 8 is slightly higher than the distance between the vertical limit surface 18 and the conveying surface 17 of the conveyor belt 8 in the initial state. At this time, the vertical limit surface 18 is in limiting contact with the pallet 9, so that the pallet 9 cannot continue to move with the conveyor belt 8; when the conveyor belt 8 is transported in the reverse direction for outbound transportation, the lower end contour of the support foot of the pallet 9 away from the side of the three-dimensional warehouse 1 presses down the limiting part 15 of the pallet limiting device 5 along the transition slope 19. During this process, the limit plate 10 rotates around the rotating pin 11 in the direction where the limiting part 15 is away from the three-dimensional warehouse 1 until the limit plate 10 drops below the conveying surface 17 under the action of the support foot of the pallet 9. During this process, the upper end contour of the limiting part 15 is always in contact with the lower end contour of the pallet 9.

[0040] A hollow hole 13 is provided on the limiting portion 15, and the hollow hole 13 is arranged on the side of the limiting portion 15 away from the three-dimensional warehouse 1 relative to the rotating pin 11. Such an arrangement makes the weight of the side of the limiting plate 10 away from the three-dimensional warehouse 1 less than the weight of the side of the limiting plate 10 close to the three-dimensional warehouse 1, so that in the initial state of the limiting plate 10, that is, the state in which the limiting plate 10 is only subjected to its own gravity, the side of the limiting plate 10 away from the three-dimensional warehouse 1 protrudes upward from the conveying surface 17 of the conveyor belt 8, and the side of the limiting plate 10 away from the three-dimensional warehouse 1 is downwardly lower than the conveying surface 17 of the conveyor belt 8.

[0041] The steps of handling the cargo pallet during the storage process of a conveyor line limit stop device:

[0042] Step S1: The lifter lifts the pallet 9 carrying the goods to the conveying surface 17 of the conveyor belt 8 of the conveying mechanism 7 away from the three-dimensional warehouse 1;

[0043] Step S2: Start the conveying mechanism 7 to make the conveyor belt 8 drive in the forward direction, so that the pallet 9 is driven by the conveyor belt 8 to move from the end of the conveyor belt 8 close to the stereoscopic warehouse 1 to the end of the conveyor belt 8 away from the stereoscopic warehouse 1;

[0044] Step S3: When one side of the support foot of the pallet 9 contacts the vertical limiting surface 18, under the action of the friction force between the conveyor belt 8 and the pallet 9, the pallet 9 has an impact force on the limiting plate 10. Under the action of the above-mentioned impact force, the limiting plate 10 rotates around the rotating pin 11 along the direction of the limiting portion 15 close to the stereoscopic warehouse 1, until the swing limiting pin 12 and the swing adjusting slot 14 are pressed and contacted with one end of the stereoscopic warehouse 1. At this time, the limiting plate 10 cannot continue to rotate around the rotating pin 11 relative to the conveyor frame 7. The distance between the vertical limiting surface 18 and the conveying surface 17 of the conveyor belt 8 is slightly higher than the distance between the vertical limiting surface 18 and the conveying surface 17 of the conveyor belt 8 in the initial state. At this time, the vertical limiting surface 18 is in limiting contact with the pallet 9, so that the pallet 9 cannot continue to move with the conveyor belt 8.

[0045] Step S4: At this time, the tray 9 blocks the lasers emitted by the laser emitting devices of the two photoelectric detection devices 16 arranged at both ends of the conveyor frame 7 along both sides of the length direction of the conveyor frame 7, and the receiving devices of the two photoelectric detection devices 16 cannot receive the lasers emitted by the laser emitting devices. At this time, the photoelectric detection device controls the driving mechanism arranged below the conveyor frame 7 to stop, so that the conveyor belt 8 stops transmitting;

[0046] Step S5: Then the shuttle vehicle 3 moves to a section of the travel track 4 located below the two conveyor belts 8 and contacts the limiting column. At this time, the lifting plate of the shuttle vehicle 3 is facing the lower surface of the pallet 9 carrying the goods.

[0047] Step S6: Then the lifting plate of the shuttle vehicle 3 rises to lift the pallet 9 carrying the goods, and transports the pallet 9 carrying the goods to the stereoscopic warehouse 1 to complete the warehousing process.

[0048] The handling steps of a cargo pallet out of the warehouse of a conveyor line limit stop device:

[0049] Step S7: the shuttle vehicle 3 transports the pallet 9 carrying the goods to the conveying surface 17 of the conveyor belt 8 of the conveying mechanism 7 close to one end of the stereoscopic warehouse 1;

[0050] Step S8: Start the conveying mechanism 7 to make the conveyor belt 8 drive in the reverse direction, so that the pallet 9 is driven by the transmission mechanism 2 to move from the end of the conveying mechanism 2 away from the stereoscopic warehouse 1 to the end of the conveying mechanism 2 close to the stereoscopic warehouse 1;

[0051] Step S9: When the lower end support leg of the pallet 9 carrying the goods contacts the transition slope 19 on the limit plate 10, the lower end contour of the lower end support leg of the pallet 9 carrying the goods presses down the limit portion 15 of the limit stop device 5 along the transition slope 19. During this process, the limit plate 10 rotates around the rotating pin 11 along the direction of the limit portion 15 close to the center of the conveyor frame 7 until the limit plate 10 drops to the bottom of the conveying surface 17 under the action of the support leg of the pallet 9 carrying the goods. During this process, the upper end contour of the limit portion 15 is always in contact with the lower end contour of the pallet 9 carrying the goods, and the limit plate 10 will not hinder the pallet 9 carrying the goods from moving along the two conveyor belts 8

[0052] Step S10: At this time, the goods carried on the pallet 9 block the lasers emitted by the laser emitting devices of the two photoelectric detection devices 16 arranged at both ends of the conveyor frame 7 along the length direction of the conveyor frame 7, and the receiving devices of the two photoelectric detection devices 16 cannot receive the lasers emitted by the laser emitting devices. At this time, the photoelectric detection device controls the driving mechanism arranged below the conveyor frame 7 to stop, so that the conveyor belt 8 is no longer in transmission. At this time, the bottom of the pallet 9 carrying the goods is located directly above the lifting plate of the elevator;

[0053] Step S11: Then the lifting plate of the elevator rises to lift the pallet 9 carrying the goods, and lifts the pallet 9 carrying the goods to the warehouse exit, thereby completing the warehouse exit process.

[0054] The above is the first embodiment of a conveyor line limit stop device and a method for transporting cargo pallets in and out of a warehouse of the present invention. In certain situations, the present invention also has a second embodiment and a third embodiment:

[0055] In the second embodiment of the present scheme, that is, when the goods carried on the pallet 9 placed on the conveying mechanism 2 are fragile goods, the pallet 9 should avoid collision and contact with the limit stop device 5. Therefore, a vertical electromagnetic controller can be hung on the support leg of the pallet 9 close to the limit stop device 5. The electromagnetic controller is equipped with an electromagnet that can be controlled by remote control, and a magnet is installed on the lower side of the limit plate 10 close to the A end of the conveyor belt 8; when the electromagnetic controller is hung on the support leg of the pallet 9 close to the limit stop device 5, the electromagnet on the electromagnetic controller is located below the conveying surface 17 of the conveyor belt 8, and is directly opposite to the magnet at the bottom of the limit plate 10. There is a repulsive force between the electromagnet on the electromagnetic controller and the magnet at the bottom of the limit plate 10; when the pallet carrying fragile goods 9 is mounted on the conveying surface 17 of the two groups of conveyor belts 8. At this time, the electromagnet on the electromagnetic control part is turned on by remote control, and then the pallet 9 carrying fragile goods moves toward the direction close to the limit stop device 5 under the transmission of the two groups of conveyor belts 8. In this process, the electromagnet on the electromagnetic controller and the magnet on the limit plate 10 repel each other, so that the limit plate 10 rotates around the rotating pin 11 along the direction of the limit part 15 close to the center of the conveyor frame 7 until the limit plate 10 is lowered to the bottom of the conveying surface 17 under the action of the supporting feet of the pallet 9 carrying the goods. In this way, the pallet 9 carrying fragile goods will not collide with the limit stop device 5 during the transmission on the conveyor line; then steps S4, S5 and S6 are performed to complete the warehousing process.

[0056] In the third embodiment of the present scheme, that is, when the goods in the stereoscopic warehouse 1 need to be inspected before leaving the warehouse, the limit stop device 5 is required to limit the pallet 9 carrying the goods leaving the warehouse, so that the inspection device arranged at one end of the conveying mechanism 2 close to the stereoscopic warehouse 1 can scan and inspect the goods that need to be left the warehouse, and a limit pin hole 20 is arranged on the limit plate 10 of the limit stop device 5, and the limit pin hole 20 is located between the rotating pin 11 and the swing limit pin 12, and is arranged biased to the center of the conveying frame 7, and an electric telescopic device is arranged inside a group of conveying frames 7 where the limit stop device 5 is arranged relative to the limit stop device 5, and a limit pin is arranged on the telescopic part of the electric telescopic device. When in the initial state, that is, the limit When the positioning plate 10 is only subjected to its own gravity, the side of the limiting plate 10 near the center of the conveying frame 7 protrudes upward from the conveying surface 17 of the conveyor belt 8, and the side of the limiting plate 10 away from the center of the conveying frame 7 is downwardly lower than the conveying surface 17 of the conveyor belt 8. At this time, the telescopic part of the electric telescopic device arranged inside the conveying frame relative to the limit stop device 5 extends in the direction close to the limit stop device 5, and the limit pin arranged on the telescopic part of the electric telescopic device can just pass through the limit pin hole 20, so that the limiting plate 10 cannot rotate around the rotating pin 11; when the lifting plate of the shuttle car 3 is lifted upward and the pallet 9 carrying the outbound goods is placed on the conveying surface 17 of the conveyor belt 8 that is transmitted in the reverse direction near the side of the conveying mechanism 2 close to the stereoscopic warehouse 1 When the pallet 9 carrying the outgoing goods is moved to the storage tank 1 by the upper limit portion 15 of the limit plate 10, the upper limit portion 15 of the limit plate 10 is moved to the storage tank 1 by the upper limit portion 15 of the limit plate 10. When the pallet 9 carrying the outgoing goods is moved to the storage tank 1 by the upper limit portion 15 of the limit plate 10, the upper limit portion 15 of the limit plate 10 is moved to the storage tank 1 by the upper limit portion 15 of the limit plate 10. When the pallet 9 carrying the outgoing goods is moved to the storage tank 1 by the upper limit portion 15 of the limit plate 10, the upper limit portion 15 of the limit plate 10 is moved to the storage tank 1 by the upper limit portion 15 of the limit plate 10. The disc 9 is limited and the inspection device arranged at one end of the conveying mechanism 2 near the stereoscopic warehouse 1 performs scanning and inspection on the goods that need to be shipped out; if the scanning and inspection result is qualified, the telescopic part of the electric telescopic device is remotely controlled to retract in the direction of the principle limit stop device 5, so that the limit pin arranged on the telescopic part of the electric telescopic device is disengaged from the limit pin hole 20, so that the limit plate 10 is rotated around the rotating pin 11 along the direction of the limit part 15 close to the center of the conveying frame 7 under the action of the supporting feet of the pallet 9 carrying the shipped goods, until the limit plate 10 drops to the bottom of the conveying surface 17, at this time, the pallet 9 carrying the shipped goods can be smoothly transported on the conveying mechanism 2; then steps S10 and S11 are performed to complete the shipping process.

[0057] The above are preferred embodiments of the present invention. It should be pointed out that a person skilled in the art may make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. A conveyor line limit stop device, characterized in that: The invention comprises a three-dimensional shelf (1), a conveying mechanism (2), a shuttle vehicle (3) and a crisscrossing running track (4); the three-dimensional shelf 1 and the conveying mechanism 2 are located above the running track 4 and do not contact each other; the shuttle vehicle 3 is movable on the running track 4 and shuttles between the three-dimensional shelf 1 and the conveying mechanism 2; a limit stop device (5) is arranged at one end of the conveying mechanism (2) close to the three-dimensional warehouse (1); when a pallet (9) is placed on a conveying surface (17), if the conveying mechanism (2) is conveyed in the forward direction for storage, the limit stop device (5) is in limit contact with the pallet (9) carrying the goods; if the conveyor belt (8) is conveyed in the reverse direction for storage, the pallet (9) presses the limit stop device (5) down to below the conveying surface (17).

2. A conveyor line limit stop device according to claim 1, characterized in that: The conveying mechanism (2) comprises two groups of conveying frames (7) arranged in parallel on both sides of a travel track (4), and conveying belts (8) capable of forward and reverse transmission are arranged on the two groups of conveying frames (7) along the length direction. A limit stop device (5) is arranged on the side close to each other on any group of conveying frames (7), and the upper surface of the limit stop device (5) protrudes from the conveying surface of the conveying belt (17).

3. A conveyor line limit stop device according to claim 1, characterized in that: The limit stop device (5) comprises a limit plate (10) and a rotating pin (11). A rotating hole is provided in the middle of the limit plate (10). The rotating pin (11) passes through the rotating hole and is fixed on the side of the conveying frame (7). The limit plate (10) can rotate around the rotating pin (11) relative to the conveying frame (7).

4. A conveyor line limit stop device according to claim 1, characterized in that: A swing adjustment groove (14) is provided at the lower part of the limit plate (10), and a swing limit pin (12) is arranged in the swing adjustment groove (14). The swing limit pin (12) passes through the swing adjustment groove (14) and is fixed on the side of the conveying frame (7). When the limit plate (10) rotates relative to the conveying frame (7) around the rotating pin (11), the swing limit pin (12) slides in the swing adjustment groove (14) and limits the rotation angle of the limit plate (10).

5. A conveyor line limit stop device according to claim 1, characterized in that: A limiting portion (15) extends obliquely upward from one side of the upper portion of the limiting plate (10) close to the center of the conveyor frame (7); the side of the limiting portion (15) close to the center of the conveyor frame (7) is a vertical limiting surface (18); the side of the limiting portion (15) away from the center of the conveyor frame (7) is a transition inclined surface (19); in an initial state, the vertical limiting surface (18) of the limiting portion (15) is higher than the conveying surface (17) of the conveyor belt (8).

6. A conveyor line limit stop device according to claim 4, characterized in that: The limiting portion (15) is provided with a hollow hole (13), and the hollow hole (13) is arranged on a side of the limiting portion (15) that is away from the stereoscopic warehouse (1) relative to the rotating pin (11).

7. The handling steps of the cargo pallet storage process of the conveyor line limit stop device according to claim 1 are characterized in that: Step S1: The lifter lifts and transports the pallet (9) carrying the goods to the conveying surface (17) of the conveyor belt (8) of the conveying mechanism (7) away from the three-dimensional warehouse (1); Step S2: starting the conveying mechanism (7) to drive the conveyor belt (8) in the forward direction, thereby causing the pallet carrying the goods on the conveying surface (17) of the conveyor belt (8) to move toward the three-dimensional shelf (1); Step S3: When the pallet (9) carrying the goods is driven by the conveyor belt (8), and a side surface of the support leg of the pallet (9) close to the three-dimensional warehouse (1) contacts the vertical limit surface (18), the limit plate (10) rotates around the rotating pin (11) in the direction of the limit portion (15) away from the center of the conveyor frame (7) until the swing limit pin (12) and the end of the swing adjustment slot (14) away from the center of the conveyor frame (7) are pressed and contacted, and at this time, the vertical limit surface (18) and the pallet (9) are in limit contact; Step S4: In the state of step S3, two photoelectric detection devices (16) arranged at both ends of the conveying frame (7) control the driving mechanism arranged below the conveying frame (7) to stop, so that the conveyor belt (8) is no longer in transmission; Step S5: In the state of step S4, the shuttle vehicle (3) travels to a section of the travel track (4) located below the two conveyor belts (8) and contacts the limit plate. At this time, the lifting plate of the shuttle vehicle (3) is directly opposite to the lower surface of the pallet (9) carrying the goods. Step S6: In the state of step S5, the lifting plate of the shuttle vehicle (3) rises to lift the pallet (9) carrying the goods, and then transports the pallet (9) carrying the goods along the travel track (4) and places it in the three-dimensional warehouse (1), completing the warehousing process.

8. The handling steps of the cargo pallet out of the warehouse of the conveyor line limit stop device according to claim 1 are characterized by: Step S7: The shuttle vehicle (3) transports the pallet (9) carrying the goods to the conveying surface (17) of the conveyor belt (8) of the conveying mechanism (7) close to one end of the three-dimensional warehouse (1); Step S8: starting the conveying mechanism (7) to cause the conveyor belt (8) to drive in the reverse direction, thereby causing the pallet carrying the goods on the conveying surface (17) of the conveyor belt (8) to move in a direction away from the three-dimensional shelf (1); Step S9: When the pallet (9) carrying goods is driven by the conveyor belt (8), the lower end contour of the support leg of the pallet (9) carrying goods away from the side of the three-dimensional warehouse (1) contacts the transition slope (19) on the limit plate (10), the lower end contour of the lower support leg of the pallet 9 carrying goods presses down the limit portion 15 of the limit stop device 5 along the transition slope 19. During this process, the limit plate 10 rotates around the rotating pin 11 along the direction of the limit portion 15 close to the center of the conveyor frame 7 until the limit plate 10 is lowered to the bottom of the conveying surface 17 under the action of the support leg of the pallet 9 carrying goods. During this process, the upper end contour of the limit portion 15 is always in contact with the lower end contour of the pallet 9 carrying goods, and the limit plate 10 does not hinder the pallet 9 carrying goods from moving along the two conveyor belts 8; Step S10: At this time, the goods carried on the pallet (9) along both sides of the length direction of the conveying frame (7) block the laser emitted by the laser emitting devices of the two photoelectric detection devices (16) arranged at both ends of the conveying frame (7), and the receiving devices of the two photoelectric detection devices (16) cannot receive the laser emitted by the laser emitting devices. At this time, the photoelectric detection device controls the driving mechanism arranged below the conveying frame (7) to stop, so that the conveyor belt (8) is no longer in transmission. At this time, the bottom of the pallet (9) carrying the goods is located directly above the lifting plate of the elevator; Step S11: The lifting plate of the lift then rises to lift the pallet (9) carrying the goods, and lifts the pallet (9) carrying the goods to the warehouse exit, thereby completing the warehouse exit process.

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