High speed aisle stacker for light weight box storage system

Abstract

The application relates to the field of roadway stacker, and discloses a high-speed roadway stacker for a light box type storage system, which comprises a machine body, a pull-up mechanism fixedly installed on the left side of the machine body, a supporting plate slidingly installed in the middle of the machine body, a driving mechanism arranged on the side, away from the pull-up mechanism, of the supporting plate, and two transmission rods rotatably installed in the supporting plate. The interval between the two fork body mechanisms is flexibly changed through the extension and retraction of the double-out hydraulic rods, the limitation that the traditional equipment can only serve a single specification supporting plate is completely broken, when the double-out hydraulic rods are elongated, the hydraulic oil in the oil shell is squeezed into the oil cavity of the extending seat, the push rod and the push plate are pushed outwards, the push plate directly abuts against the inner wall of the recess groove of the supporting plate, the supporting plate is tightly supported and fixed, the gap between the forks and the supporting plate is effectively eliminated, the stability during the extraction of goods is improved, the goods are prevented from shaking during the extraction and transportation, the goods are prevented from falling, and the safety of the carrying process is greatly improved.

Description

Technical Field

[0001] This application relates to the field of stacker crane technology, and more particularly to a high-speed stacker crane for lightweight box storage systems. Background Technology

[0002] Stacker cranes are core equipment in automated warehousing systems, primarily used for automated storage and retrieval of goods in narrow aisles of high-rise warehouses. The core working principle of stacker cranes is to achieve automated storage and retrieval of goods in high-rise warehouses through the coordinated movement of three dimensions: horizontal walking, vertical lifting, and fork extension, combined with precise positioning control and system command interaction. The entire process requires no human intervention. Through the coordinated movement of the mechanical structure and the precise control of the electrical system, efficient, accurate, and automated flow of goods in the automated warehouse is achieved.

[0003] Most existing stacker cranes transport goods by lifting pallets using their double forks. However, pallets come in various styles, with different spacing between the grooves on their bottoms. The spacing between the existing double forks is fixed, which cannot accommodate the loading and unloading of various pallet items. Typically, goods are transferred to custom-made pallets, which is inconvenient. Secondly, the friction between the goods and the pallet is insufficient when the forks are lifting, especially during acceleration, deceleration, or lifting phases. This lack of friction often leads to goods slipping during handling and lifting, causing accidents. Summary of the Invention

[0004] This application proposes a high-speed aisle stacker crane for lightweight box storage systems to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this application adopts the following technical solution: a high-speed aisle stacker crane for a lightweight box-type storage system, comprising: a machine body, wherein a lifting mechanism is fixedly installed on the left side of the machine body;

[0006] The support plate is slidably installed in the middle of the machine body. A drive mechanism is set on the side of the support plate away from the lifting mechanism. Two transmission rods are rotatably installed inside the support plate. Synchronous pulleys are fixedly connected to the transmission rods near the drive mechanism. The synchronous pulleys are connected to the drive mechanism through a synchronous belt. Two fork mechanisms are slidably installed between the two transmission rods for picking up and placing goods and fixing the goods during the movement of the goods.

[0007] An oil tank is fixed to the bottom of the fork mechanism, and a piston head is slidably connected inside the oil tank. A double-outlet hydraulic rod is fixedly installed between the two piston heads.

[0008] Preferably, the fork mechanism includes a sliding seat, the upper surface of which has two mounting grooves, and permanent magnets are fixedly installed inside the mounting grooves to form a uniform magnetic field. Two plates are fixedly connected inside the sliding seat, and springs are fixedly installed on the bottom surface of the plates. A limiting pin that is slidably connected to the bottom end of the spring is fixedly connected to the sliding seat. An extension seat is slidably connected to the top of the sliding seat, and a toothed plate is fixedly installed at the bottom of the extension seat. Two gears that are slidably connected to the transmission rod are engaged below the toothed plate.

[0009] Preferably, the fork mechanism also includes two limiting plates fixedly connected to the support plate. The limiting plates are V-shaped in general, and their inclined parts are provided with multiple limiting holes that are adapted to the bottom of the limiting pins. A fixing plate is fixedly connected between the two limiting plates for fixing the double hydraulic rod 10.

[0010] Preferably, the extender includes a base, the upper surface of which has a second mounting groove, and a coil is fixedly installed inside the second mounting groove. The top of the base is fixedly connected to an upper plate, and the upper plate has an oil cavity inside. Multiple push rods are arranged inside the oil cavity. A push plate is fixedly connected to the end of the push rod away from the oil cavity. A second spring is arranged in the middle of the push rod. One end of the second spring is fixedly connected to the inner wall of the oil cavity, and the other end is fixedly connected to the push rod.

[0011] Preferably, the top of the upper plate has an installation cavity, and an electromagnet and an electromagnetic switch are fixedly installed inside the installation cavity. The electromagnetic switch is used to control the power supply of the electromagnet, and a magnetic slider is slidably connected to one end of the oil cavity near the installation cavity.

[0012] Preferably, an oil passage and a slide are provided on the side of the upper plate away from the push rod. The upper end of the oil passage is connected to the oil cavity, and a sliding tube is slidably connected inside the slide. The sliding tube is connected to the lower end of the oil passage and a flexible hose is fixedly connected to the bottom end. The bottom end of the flexible hose is connected to the inside of the oil shell.

[0013] Preferably, the fork mechanism also includes a power supply, which is connected in series with the electromagnet at the control terminal of the electromagnetic switch. The electromagnetic switch is a normally open switch, and its energized terminal is connected to both ends of the coil via a wire.

[0014] Preferably, the support plate is fixedly connected to the stretching end of the lifting mechanism, and when the lifting mechanism is working, it can drive the support plate to move up and down along the machine body.

[0015] Preferably, the spring applies a pushing force to the pair of limiting pins, causing the bottom end of the limiting pin to abut against the limiting hole on the limiting plate. As the limiting pin moves from the middle to the edge, the pushing force applied by the spring to the pair of limiting pins gradually increases.

[0016] The beneficial effects of this invention are as follows:

[0017] This invention, through the extension and retraction of dual hydraulic rods, flexibly changes the distance between the two fork mechanisms, completely breaking the limitation of traditional equipment that can only serve pallets of a single size. When the dual hydraulic rods extend, they also squeeze the hydraulic oil in the oil tank into the oil chamber of the extension seat, pushing the push rod and push plate outward. The push plate directly abuts against the inner wall of the pallet groove, firmly supporting and fixing the pallet, effectively eliminating the gap between the forks and the pallet, improving the stability of goods during retrieval, preventing goods from shaking during retrieval and transportation, avoiding goods from falling, and greatly improving the safety of the handling process.

[0018] Secondly, when the dual hydraulic rods fail, the coil will cut the magnetic field lines of the permanent magnet when loading or unloading goods on the upper plate, thereby generating an induced current. This will cause the electromagnetic switch to close, powering the electromagnet and pushing the magnetic slider to slide. This will cause the hydraulic oil inside the oil chamber to push the push rod to extend, which in turn will extend the push plate. In this way, the pallet will be fixed in place as it moves. Even if the main hydraulic system is paralyzed, the forks can still forcefully press the push plate against the inner wall of the pallet groove, firmly fixing the pallet in place. This effectively prevents major safety accidents caused by loss of main power, such as goods slipping or tipping over in mid-air. Attached Figure Description

[0019] The accompanying drawings, which form part of this specification, illustrate embodiments disclosed in this application and, together with the specification, explain the principles of this application in a clear and understandable manner.

[0020] This disclosure will become clearer with reference to the accompanying drawings and the following detailed description, wherein:

[0021] Figure 1 This is a schematic diagram of the overall appearance of the invention;

[0022] Figure 2 This is a half-sectional schematic diagram of the support plate structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the limiting plate of the present invention;

[0024] Figure 4 This is a half-sectional schematic diagram of the sliding seat of the present invention;

[0025] Figure 5 This is a half-sectional schematic diagram of the oil cavity of the present invention;

[0026] Figure 6 This is a schematic diagram of the coil structure of the present invention;

[0027] Figure 7 This is a schematic diagram of the interior of the sliding seat of the present invention;

[0028] Figure 8 This is an exploded view of the extended seat portion of the present invention.

[0029] The components are as follows: 1. Body; 2. Lifting mechanism; 3. Support plate; 4. Drive mechanism; 5. Transmission rod; 6. Synchronous pulley; 7. Fork mechanism; 71. Sliding seat; 72. Plate; 73. Spring 1; 74. Limit pin; 75. Extension seat; 751. Base; 752. Coil; 753. Upper plate; 754. Oil chamber; 755. Push rod; 756. Push plate; 757. Spring 2; 758. Mounting cavity; 759. Electromagnet; 7510. Electromagnetic switch; 7511. Magnetic slider; 7512. Oil passage; 7513. Slide rail; 7514. Sliding tube; 7515. Hose; 76. Tooth plate; 77. Gear; 78. Permanent magnet; 79. Limit plate; 8. Oil shell; 9. Piston head; 10. Double-outlet hydraulic rod. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0031] In real-world warehousing environments, pallets for placing goods are not standardized but exhibit a great deal of diversity. Pallets of different materials, sizes, and styles have significantly different bottom structures, especially the spacing between the bottom recesses. However, most existing traditional stacker cranes are equipped with fixed-spaced double forks. Because the fork spacing cannot be adjusted, fixed-spaced stacker cranes can only serve pallets of specific sizes. When encountering pallets with mismatched bottom recess spacing, the forks not only cannot insert smoothly, but forced operation may also lead to pallet damage, goods tipping over, or even equipment malfunctions, posing safety hazards. Furthermore, for ease of loading and unloading, the bottom recesses of the pallets are usually wider than the forks. This can cause goods to wobble during loading and unloading, posing a risk of accidental slippage and potential accidents.

[0032] Please see Figure 1-3 As shown, the present invention discloses a high-speed aisle stacker crane for a lightweight box-type storage system, comprising: a body 1, and a lifting mechanism 2 fixedly installed on the left side of the body 1;

[0033] Support plate 3 is slidably installed in the middle of the machine body 1. A drive mechanism 4 is provided on the side of the support plate 3 away from the lifting mechanism 2. Two transmission rods 5 are rotatably installed inside the support plate 3. A synchronous pulley 6 is fixedly connected to the end of the transmission rod 5 near the drive mechanism 4. The synchronous pulley 6 is connected to the drive mechanism 4 through a synchronous belt. Two fork mechanisms 7 are slidably installed between the two transmission rods 5.

[0034] It should be noted that a visual recognition system is installed on the front and rear sides of the support plate 3 to identify the spacing between the grooves at the bottom of the support plate. Multiple sliding rods are provided on the front and rear sides of the machine body 1. The support plate 3 is slidably connected to the multiple sliding rods. A lifting slide is symmetrically fixedly installed on the top of the support plate 3. The lifting slide is slidably connected to the machine body 1. The lifting mechanism 2 includes a coiler. Steel cables are wound on both sides of the coiler. One end of the two steel cables is fixedly connected to the coiler, and the other end is fixedly connected to the lifting slide.

[0035] The drive mechanism 4 includes a drive motor fixedly mounted on the support plate 3 and a shaft rotatably connected to the support plate 3. A first transmission wheel is fixedly connected to the output shaft of the drive motor, and a second transmission wheel is fixedly connected to one end of the shaft near the first transmission wheel. The second transmission wheel meshes with the first transmission wheel directly below it. Two pulleys are fixedly mounted on the other end of the shaft. The two pulleys are respectively connected to the synchronous pulleys 6 on both sides via a synchronous belt. When the drive motor is working, it drives the second transmission wheel to rotate through the first transmission wheel. The second transmission wheel drives the two pulleys to rotate through the shaft. The pulleys then drive the synchronous pulleys 6 on both sides to rotate through the synchronous belt, thereby realizing the synchronous rotation of the two transmission rods 5.

[0036] An oil tank 8 is fixed to the bottom of the fork mechanism 7. A piston head 9 is slidably connected inside the oil tank 8. A double-outlet hydraulic rod 10 is fixedly installed between the two piston heads 9. The oil tank 8 is filled with hydraulic oil.

[0037] The two inner rods of the double-outlet hydraulic rod 10 slide and extend into the two oil tanks 8 respectively, and the ends of the two inner rods of the double-outlet hydraulic rod 10 are fixedly connected to the two piston heads 9 respectively.

[0038] Once the visual recognition system identifies the spacing of the groove at the bottom of the pallet, the inner rods at both ends of the double-outlet hydraulic rod 10 extend, causing the piston heads 9 at both ends to slide inside the oil tank 8, thus discharging the hydraulic oil inside. After the two ends of the double-outlet hydraulic rod 10 contact the oil tank 8, it drives the fork mechanism 7 to move, aligning the edge of the fork mechanism 7 away from the double-outlet hydraulic rod 10 with the side wall of the pallet groove. Subsequently, the two ends of the double-outlet hydraulic rod 10 shorten, causing the piston heads 9 at both ends to slide inside the oil tank 8, drawing back the hydraulic oil discharged from the oil tank 8. Then, the double-outlet hydraulic rod 10 stops working. During this process, the two fork mechanisms 7 do not move, thereby changing the spacing between the two fork mechanisms 7 to adapt to different pallets.

[0039] Compared to traditional stacker cranes, which mostly have fixed-spacing double forks, this solution not only makes it impossible to operate on non-standard pallets with varying bottom groove spacing, but also easily leads to safety accidents if forced to operate. This solution introduces a visual recognition system that can accurately identify the spacing of the bottom grooves of the pallet. By extending and retracting the two ends of the double hydraulic rod 10, the spacing between the two fork mechanisms 7 can be flexibly changed, completely breaking the limitation of traditional equipment that can only serve pallets of a single specification, and greatly improving the versatility and operational flexibility of the stacker crane.

[0040] Please see Figure 2-8 As shown, the fork mechanism 7 includes a sliding seat 71. Two mounting slots are formed on the upper surface of the sliding seat 71. Permanent magnets 78 are fixedly installed inside the mounting slots. The magnetic poles of the two permanent magnets 78 are opposite to each other, so that a uniform magnetic field is formed between the two permanent magnets 78. Two plates 72 are fixedly connected inside the sliding seat 71. A spring 73 is fixedly fixed on the bottom surface of the plate 72. A limiting pin 74 that is slidably connected to the sliding seat 71 is fixedly connected to the bottom end of the spring 73. An extension seat 75 is slidably connected to the top of the sliding seat 71. A toothed plate 76 is fixedly installed at the bottom of the extension seat 75. Two gears 77 that are slidably connected to the transmission rod 5 are meshed below the toothed plate 76.

[0041] It should be noted that the two fork mechanisms 7 are symmetrically arranged, and the two gears 77 are located inside the sliding seat 71. The gears 77 are in rotational contact with the inner side wall of the sliding seat 71. The transmission rod 5 has a strip groove on its side, and the gear 77 has a circular hole on its side that can be inserted into the transmission rod 5. The inner side wall of the circular hole has a protruding slider, which is slidably connected to the strip groove. When the drive mechanism 4 drives the two transmission rods 5 to rotate, the transmission rods 5 will drive the gears 77. The rotation of the gears 77 will push the toothed plate 76 to slide to one side, thereby driving the extension seat 75 to slide out. When the extension seat 75 extends into the groove at the bottom of the pallet, it stops extending. The coiler in the lifting mechanism 2 works, and by winding up and tightening the steel cable, the extension seat 75 is lifted upward to raise the pallet, thereby lifting the goods.

[0042] The fork mechanism 7 also includes two limiting plates 79 that are fixedly connected to the support plate 3. The limiting plate 79 is V-shaped, and its inclined part has multiple limiting holes that are adapted to the bottom of the limiting pin 74. A fixing plate is fixedly connected between the two limiting plates 79 for fixing the double hydraulic rod 10.

[0043] It should be noted that spring 73 applies a pushing force to the limiting pin 74, causing the bottom end of the limiting pin 74 to abut against the limiting hole on the limiting plate 79. As the limiting pin 74 moves from the middle to the edge, the pushing force applied by spring 73 to the limiting pin 74 gradually increases. Specifically, when the double-outlet hydraulic rod 10 extends, it will cause the piston heads 9 at both ends to slide inside the oil shell 8. After the piston heads 9 slide a certain distance, the two ends of the double-outlet hydraulic rod 10 will contact the oil shell 8. Continuing to extend will cause the sliding seat 71 to slide towards both ends. During this process, under the push of the double-outlet hydraulic rod 10, the limiting pin 74 will slide out from the limiting hole on the limiting plate 79 and slide into the outer limiting hole. Compared to the inner limiting hole, the positioning hole allows the limiting pin 74 to move upward a greater distance, thus exerting a greater compressive force on the spring 73. Correspondingly, the pressure on the limiting pin 74 will also be greater. When changing the position of the limiting pin 74, a force is needed to move the limiting pin 74. During the process, the limiting pin 74 will first move upward and then downward in the vertical direction. Through the insertion of the limiting pin 74 into the limiting hole, a relatively stable connection is achieved between the sliding seat 71 and the limiting plate 79. When some small shaking occurs, the sliding seat 71 and the limiting plate 79 will not slide relative to each other. Only when the inner rod of the double-outlet hydraulic rod 10 extends or retracts will it drive the sliding seat 71 to move relative to the limiting plate 79.

[0044] Please see Figure 2-8 As shown, the extendable seat 75 includes a base 751. The upper surface of the base 751 has a second mounting groove. A coil 752 is fixedly installed inside the second mounting groove. The top of the base 751 is fixedly connected to an upper plate 753. An oil cavity 754 is opened inside the upper plate 753. It should be noted that multiple circular grooves are opened on the inner sidewall of the oil cavity 754. A push rod 755 is slidably installed in each circular groove. One end of the push rod 755 passes through the upper plate 753 and is fixedly connected to a push plate 756. Initially, the push plate 756 is retracted into the sidewall of the upper plate 753. A second spring 757 is sleeved on the outer side of the push rod 755 inside the circular groove. A piston is fixedly connected to the end of the push rod 755 away from the push plate 756. The two ends of the second spring 757 abut against the piston and the circular groove respectively, and the second spring 757 applies a spring force to the piston.

[0045] It should be noted that the base 751 is fixedly connected to the toothed plate 76 and slidably connected to the sliding seat 71. The oil cavity 754 is filled with hydraulic oil. The central axis of the coil 752 forms a magnetic field with the two permanent magnets 78, and the magnetic field lines are parallel. The coil 752 in the initial position is entirely located in this magnetic field.

[0046] The top of the upper plate 753 has an installation cavity 758. An electromagnet 759 and an electromagnetic switch 7510 are fixedly installed inside the installation cavity 758. The electromagnetic switch 7510 is used to control the power supply of the electromagnet 759. A magnetic slider 7511 is slidably connected to one end of the oil cavity 754 near the installation cavity 758. An oil pusher is installed on the side of the magnetic slider 7511 near the oil to ensure that the oil can be pushed stably and there will be no leakage.

[0047] It should be noted that the fork mechanism 7 also includes a power supply. The power supply, the control terminal of the electromagnetic switch 7510, and the electromagnet 759 form a complete series circuit. One control terminal of the electromagnetic switch 7510 is connected to the power supply, and the other control terminal is connected to the electromagnet 759. It is a normally open switch. The energized terminal of the electromagnetic switch 7510 is connected to both ends of the coil 752 through a wire. The energized terminal of the electromagnetic switch 7510 is also connected in parallel with a rectifier bridge. When the toothed plate 76 of the coil 752 slides out of or into the sliding seat 71, the closed coil 752 will cut the magnetic field lines formed by the permanent magnet 78, generating an induction magnet. The induced current is rectified by the rectifier bridge to power the electromagnetic switch 7510, thereby closing the electromagnetic switch 7510 and connecting the controlled circuit. This powers the electromagnet 759. When the electromagnet 759 is energized, the magnetism of the two adjacent sides of the electromagnet 759 and the magnetic slider 7511 is opposite, causing the electromagnet 759 to push the magnetic slider 7511 to slide. This causes the hydraulic oil inside the oil chamber 754 to push the push rod 755 to extend, which in turn causes the push plate 756 to extend. The push plate 756 then firmly presses against the side wall of the groove at the bottom of the pallet, thus fixing the pallet during the loading and unloading of goods.

[0048] Please see Figure 2-8 As shown, an oil passage 7512 and a slide rail 7513 are provided on the side of the upper plate 753 away from the push rod 755. The upper end of the oil passage 7512 is connected to the oil cavity 754. The slide rail 7513 is slidably and sealed to a sliding tube 7514. The upper end of the sliding tube 7514 is open and is connected to the oil passage 7512. When the sliding tube 7514 slides back and forth along the sliding slide rail 7513, the lower end of the oil passage 7512 is always connected to the sliding tube 7514 and the two will not be separated. The bottom end of the sliding tube 7514 is fixedly connected to a hose 7515. The bottom end of the hose 7515 is connected to the inside of the oil shell 8.

[0049] It should be noted that when the double hydraulic rod 10 extends, it will drive the piston heads 9 at both ends to move inside the oil tank 8, thereby squeezing the hydraulic oil in the oil tank 8 through the hose 7515, sliding tube 7514, and oil passage 7512 into the oil chamber 754, pushing the push rod 755 to extend.

[0050] When the piston head 9 pushes the hydraulic oil in the oil tank 8 into the oil chamber 754, the piston head 9 is at one end of the inner cavity of the oil tank 8. At the same time, the side of the piston head 9 is tightly fitted with the end of the hose 7515. The piston head 9 seals the end of the hose 7515 to prevent the hydraulic oil from flowing back into the oil tank 8, i.e., when the two ends of the double-outlet hydraulic rod 10 are in contact with the oil tank 8.

[0051] Using the above method, even if the double hydraulic rod 10 fails, when the upper plate 753 picks up or puts down goods, the push plate 756 will still extend, and the forks can still forcefully press the push plate 756 against the inner wall of the pallet groove, firmly fixing the pallet and effectively preventing the goods from slipping in mid-air due to loss of power.

[0052] Working principle:

[0053] During the handling of goods, a vision recognition system is installed on the front and rear sides of the pallet 3 to identify the spacing of the groove at the bottom of the target pallet on the shelf or transport platform. Then, the double hydraulic rod 10 extends or shortens to initially adjust the spacing of the two fork mechanisms 7 to the target size (the edge of the upper plate 753 away from the double hydraulic rod 10 is aligned with the side wall of the groove). Then, when the drive mechanism 4 drives the two transmission rods 5 to rotate, the transmission rods 5 will drive the gear 77. The rotation of the gear 77 will drive the toothed plate 76 to slide to one side, thereby causing the upper plate 753 to extend until the upper plate 753 is located in the groove of the pallet. By rotating the drive mechanism 4 in both directions, the upper plate 753 can be extended to the front or the rear, so that goods on the front and rear shelves can be handled.

[0054] Subsequently, the double hydraulic rod 10 extends again, causing the piston heads 9 at both ends to move inside the oil tank 8, thereby squeezing the hydraulic oil in the oil tank 8 through the hose 7515, sliding tube 7514, and oil passage 7512 into the oil chamber 754, pushing the push rod 755 out, so that the push plate 756 contacts the side wall of the bottom groove of the pallet, tightening the goods, thereby fixing the pallet.

[0055] When the lifting mechanism 2 is working, it drives the two lifting slides and the support plate to move upward, so that the upper surface of the upper plate 753 contacts the pallet and lifts the pallet. Then the lifting mechanism 2 stops working, the drive mechanism 4 reverses, and drives the transmission rod 5 to rotate in the direction, thereby driving the toothed plate 76, the upper plate 753, the pallet and the goods above to retract back to the top of the support plate 3 through the gear 77.

[0056] The machine body 1 moves, driving the goods to move. During the process, the edge of the upper plate 753 away from the double hydraulic rod 10 contacts the side wall of the groove, while the extended push plate 756 is in close contact with the other side wall of the groove. The two work together to support the goods, thereby fixing the pallet. The goods will not shake or slide during the high-speed movement of the stacker crane, further improving the stability of the goods during transportation.

[0057] When the upper plate 753 and the base 751 slide relative to each other, the coil 752 cuts the magnetic field lines formed by the permanent magnet 78, thereby generating an induced current, which causes the electromagnetic switch 7510 to be in a closed state. The power supply is provided to the electromagnet 759. When the double-outlet hydraulic rod 10 is not in failure, the repulsive force of the electromagnet 759 on the magnetic slider 7511 is insufficient to push the hydraulic oil in the oil chamber 754. When the double-outlet hydraulic rod 10 fails, the magnetic slider 7511 will slide, causing the hydraulic oil inside the oil chamber 754 to push the push rod 755 to extend, which in turn drives the push plate 756 to extend. This fixes the tray during the movement of the tray. This method only works when the upper plate 753 and the base 751 slide relative to each other. It will not work when the upper plate 753 and the base 751 are stationary.

[0058] This invention flexibly changes the distance between the two fork mechanisms 7 by extending and retracting the two ends of the double-outlet hydraulic rod 10, breaking the limitation of traditional equipment that can only serve pallets of a single specification. This greatly improves the versatility and operational flexibility of the stacker crane. The hydraulic oil in the oil tank 8 serves as the medium. Through the extension of the double-outlet hydraulic rod 10, the hydraulic oil is squeezed into the oil chamber 754 of the extension seat 75 through the hose 7515, thereby pushing the push rod 755 and the push plate 756 to extend outward. The push plate 756 directly abuts against the inner wall of the pallet groove, firmly supporting and fixing the pallet. This effectively eliminates the gap between the forks and the pallet, improves the stability of goods during retrieval, prevents goods from shaking during retrieval and transportation, avoids goods falling, and greatly improves the safety of the handling process.

[0059] Secondly, when the upper plate 753 moves, it will drive the coil 752 to move as well, causing the coil 752 to generate an induced current, which powers the electromagnetic switch 7510, putting it in a closed state. The power supply is provided to the electromagnet 759, and the magnetic slider 7511 slides, causing the hydraulic oil inside the oil chamber 754 to push the push rod 755 to extend, which in turn drives the push plate 756 to extend, thereby fixing the pallet during the movement of the pallet. When the double-outlet hydraulic rod 10 is working normally, the electromagnetic repulsion generated by the electromagnet 759 is insufficient to push the magnetic slider 7511. However, once the double-outlet hydraulic rod 10 fails and the main power originally used to adjust the spacing is lost, the push plate 756 will still extend during the pallet handling process. Even if the main hydraulic system is paralyzed, the forks can still forcibly press the push plate 756 against the inner wall of the pallet groove, firmly fixing the pallet and effectively preventing major safety accidents caused by the loss of main power, such as goods slipping or tipping in mid-air.

[0060] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. High speed aisle stacker for light box storage system, characterized in that, include: The body (1) has a lifting mechanism (2) fixedly installed on the left side of the body (1); The support plate (3) is slidably installed in the middle of the machine body (1). A drive mechanism (4) is provided on the side of the support plate (3) away from the lifting mechanism (2). Two transmission rods (5) are rotatably installed inside the support plate (3). A synchronous wheel (6) is fixedly connected to the transmission rod (5) near the drive mechanism (4). The synchronous wheel (6) is connected to the drive mechanism (4) through a synchronous belt. Two fork mechanisms (7) are slidably installed between the two transmission rods (5) for picking up and putting down goods and fixing the goods during the movement of the goods. An oil tank (8) is fixed to the bottom of the fork mechanism (7), and a piston head (9) is slidably connected inside the oil tank (8). A double-outlet hydraulic rod (10) is fixedly installed between the two piston heads (9).

2. The high-speed aisle stacker crane for a lightweight box-type storage system according to claim 1, characterized in that, The fork mechanism (7) includes a sliding seat (71). Two mounting slots are opened on the upper surface of the sliding seat (71). A permanent magnet (78) is fixedly installed inside the mounting slot to form a uniform magnetic field. Two plates (72) are fixedly connected inside the sliding seat (71). A spring (73) is fixedly installed on the bottom surface of the plate (72). A limiting pin (74) that is slidably connected to the sliding seat (71) is fixedly connected to the bottom end of the spring (73). An extension seat (75) is slidably connected to the top of the sliding seat (71). A toothed plate (76) is fixedly installed at the bottom of the extension seat (75). Two gears (77) that are slidably connected to the transmission rod (5) are meshed below the toothed plate (76).

3. The high-speed aisle stacker crane for a lightweight box-type storage system according to claim 2, characterized in that, The fork mechanism (7) also includes two limiting plates (79) that are fixedly connected to the support plate (3). The limiting plate (79) is V-shaped, and its inclined part has multiple limiting holes that are adapted to the bottom of the limiting pin (74). A fixing plate is fixedly connected between the two limiting plates (79) for fixing the double hydraulic rod (10).

4. The high-speed aisle stacker crane for a lightweight box-type storage system according to claim 2, characterized in that, The extension seat (75) includes a base (751), and an installation groove 2 is provided on the upper surface of the base (751). A coil (752) is fixedly installed inside the installation groove 2. An upper plate (753) is fixedly connected to the top of the base (751). An oil cavity (754) is provided inside the upper plate (753). Multiple push rods (755) are provided inside the oil cavity (754). A push plate (756) is fixedly connected to one end of the push rod (755) away from the oil cavity (754). A spring 2 (757) is provided in the middle of the push rod (755). One end of the spring 2 (757) is fixedly connected to the inner wall of the oil cavity (754), and the other end is fixedly connected to the push rod (755).

5. The high-speed aisle stacker crane for a lightweight box-type storage system according to claim 4, characterized in that, The top of the upper plate (753) is provided with an installation cavity (758). An electromagnet (759) and an electromagnetic switch (7510) are fixedly installed inside the installation cavity (758). The electromagnetic switch (7510) is used to control the power supply of the electromagnet (759). A magnetic slider (7511) is slidably connected to one end of the oil cavity (754) near the installation cavity (758).

6. The high-speed aisle stacker crane for a lightweight box-type storage system according to claim 5, characterized in that, An oil passage (7512) and a slide (7513) are provided on the side of the upper plate (753) away from the push rod (755). The upper end of the oil passage (7512) is connected to the oil cavity (754). A sliding tube (7514) is slidably connected inside the slide (7513). The sliding tube (7514) is connected to the lower end of the oil passage (7512) and a hose (7515) is fixedly connected to the bottom end. The bottom end of the hose (7515) is connected to the inside of the oil shell (8).

7. The high-speed aisle stacker crane for a lightweight box-type storage system according to claim 5, characterized in that, The fork mechanism (7) also includes a power supply, which is connected in series with the control terminal electromagnet (759) of the electromagnetic switch (7510). The electromagnetic switch (7510) is a normally open switch, and its energized end is connected to both ends of the coil (752) through a wire.

8. The high-speed aisle stacker crane for a lightweight box-type storage system according to claim 1, characterized in that, The support plate (3) is fixedly connected to the stretching end of the lifting mechanism (2). When the lifting mechanism (2) is working, it can drive the support plate (3) to move up and down along the body (1).

9. The high-speed aisle stacker crane for a lightweight box-type storage system according to claim 3, characterized in that, Spring 1 (73) applies a pushing force to the limiting pin (74), causing the bottom end of the limiting pin (74) to abut against the limiting hole on the limiting plate (79). As the limiting pin (74) moves from the middle to the edge, the pushing force applied by spring 1 (73) to the limiting pin (74) gradually increases.

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