Stacking machine cargo carrying table cargo storing and taking device for heavy-load cargos

Abstract

The utility model relates to the technical field of goods storage, and aims to solve the technical problem that the cost of a telescopic pallet fork is greatly increased. In order to solve the technical problem, the utility model provides the cargo storing and taking device of the cargo carrying table of the stacking machine for heavy-load cargoes. The goods shelf comprises a goods shelf body and multiple layers of goods storage areas arranged on the goods shelf body from top to bottom. The goods storage area is provided with at least one goods storage position in the X direction; the multi-layer goods storage area is provided with a plurality of first rollers which are rotationally connected with the goods shelf; the cargo carrying table ascends and descends; the cargo carrying table comprises a cargo carrying table body and a second roller set used for supporting and conveying cargoes to be stored and taken, and the upper surface of the second roller set is flush with the upper surface of the first roller set. The second roller is rotationally connected with the cargo carrying table; the telescopic push-pull pallet fork is connected with the cargo carrying table; the goods to be stored and taken are located between the two check blocks and do not make contact with the upper surfaces of the fork heads. According to the utility model, cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cargo storage, in particular to a cargo storage and retrieval device for a cargo platform of a stacker used for heavy-loaded cargo. Background Art

[0002] The loading platform retrieval system is a crucial component of automated storage systems for stacker cranes. Currently, over 70% of these systems utilize telescopic forks, a relatively mature technology. The remainder utilizes trolleys, conveyor lines, shuttles, and letter carts. However, the current market demands for stored goods vary widely, and the heavy and bulky cargo poses a severe challenge to telescopic fork retrieval systems.

[0003] The telescopic fork picking action and supporting facilities are relatively simple. However, for larger and heavier objects (for example, heavy-duty large-sized goods (load below 6000kg, specifications 4000*4000 or 2500*4000*2)), the fork stroke, load capacity, disturbance, etc. all pose greater challenges. For example, if the load is more than 3000kg and the goods are 4000*4000 single extension / 2500*4000 double deep, the fork stroke is too long. The design and material costs invested to meet the demand have risen sharply, and the stability needs to be verified, so the risk is relatively large.

[0004] The existing technology also provides horizontal power through a trolley, but the trolley needs to run on a track and travel through a rack and pinion, which places very high requirements on the operation and lifting and stopping accuracy of the stacker. An auxiliary stopping mechanism is needed for lifting to meet the requirements, and a powered roller is still required on the cargo platform for auxiliary transportation. There is an additional power device, and the trolley and the powered roller cooperate, which causes signal interaction and affects the efficiency of use.

[0005] It can be seen that the prior art for storing and retrieving larger and heavier objects has the following problems: high requirements for telescopic forks, which greatly increases the cost; and low efficiency in storing and retrieving goods. Utility Model Content

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the above-mentioned problems existing in the prior art.

[0007] In order to solve the above technical problems, the utility model provides a stacker crane loading platform storage and retrieval device for heavy-loaded goods, comprising:

[0008] The shelf comprises a shelf body and a multi-layer cargo storage area arranged on the shelf body from top to bottom; the cargo storage area is provided with at least one cargo storage position along the X direction, and the X direction is the transport direction for storing and retrieving cargo; the multi-layer cargo storage area is provided with a first roller group for supporting and transporting cargo to be stored and retrieved, the first roller group comprising a plurality of first rollers arranged at intervals along the X direction, and the first rollers are rotatably connected to the shelf;

[0009] The cargo platform is arranged on one side of the shelf along the X direction; the cargo platform is raised and lowered; the cargo platform includes a cargo platform body and a second roller group arranged on the cargo platform body for supporting and transporting the goods to be stored and retrieved, the upper surface of the second roller group is flush with the upper surface of the first roller group; the second roller group includes a plurality of second rollers arranged at intervals along the X direction, and the second rollers are rotatably connected to the cargo platform;

[0010] The telescopic push-pull fork is connected to the cargo platform; the telescopic push-pull fork includes a fork body and a fork head that extends and retracts in the X direction, with blocks provided at both ends of the fork head; the goods to be stored and retrieved are located between the two blocks and do not contact the upper surface of the fork head.

[0011] In one embodiment of the present invention, along the X direction, the first roller group and the second roller group are arranged opposite to each other.

[0012] In one embodiment of the present invention, two first roller groups are arranged at intervals along the Y direction, and the two first roller groups are symmetrically arranged with the center line of the cargo storage position as the symmetry axis.

[0013] In one embodiment of the present invention, two second roller groups are arranged at intervals along the Y direction, and the two second roller groups are symmetrically arranged with the center line of the cargo platform body as the symmetry axis.

[0014] In one embodiment of the present invention, along the Y direction, two groups of first roller groups are arranged at intervals, and the two groups of first roller groups are symmetrically arranged with the center line of the cargo storage position as the symmetry axis; along the Y direction, two groups of second roller groups are arranged at intervals, and the two groups of second roller groups are symmetrically arranged with the center line of the cargo platform body as the symmetry axis.

[0015] In one embodiment of the present invention, when there are two first roller groups, a retaining ring is provided on the outer side of the first roller; when there are two second roller groups, a retaining ring is provided on the outer side of the second roller.

[0016] In one embodiment of the present invention, the fork head of the telescopic push-pull fork is arranged between the two groups of second roller groups.

[0017] In one embodiment of the present invention, the telescopic push-pull fork is a bidirectional telescopic push-pull fork.

[0018] In one embodiment of the present invention, a chamfer is provided at the top of the inner wall of the stopper.

[0019] In one embodiment of the present invention, the present application further includes a control unit electrically connected to the cargo platform and the telescopic push-pull fork.

[0020] In one embodiment of the present invention, the present application further includes a sensor for identifying the height position of the cargo platform, and the sensor is electrically connected to the control unit.

[0021] In one embodiment of the present invention, the cargo platform is raised and lowered by a moving assembly, which includes a frame, a winch, a wire rope and a pulley; the winch is connected to the frame, the cargo platform is located in the frame, the pulley is rotatably connected to the frame, the wire rope is wound around the winch, and the free end of the wire rope is wound around the pulley and then connected to the cargo platform.

[0022] The above technical solution of the utility model has the following advantages compared with the prior art:

[0023] The stacker platform loading and unloading device for heavy-loaded cargo described in this utility model features a first and second roller that supports the cargo to be loaded and unloaded. The cargo is then hooked by a telescopic push-pull fork, allowing the cargo to be transferred between the first and second rollers. During this transfer process, the forks of the telescopic push-pull fork do not bear the weight of the cargo to be loaded and unloaded; instead, the weight of the cargo to be loaded and unloaded is borne by the first and second rollers. This reduces the requirements for the telescopic push-pull fork during the transfer process, thereby reducing costs. Furthermore, this embodiment achieves automated loading and unloading of cargo through the device, resulting in high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to make the content of the utility model easier to understand, the utility model is further described in detail below based on the specific embodiments of the utility model in conjunction with the accompanying drawings, wherein:

[0025] Figure 1 This is a front view of a stacker loading platform storage and retrieval device for heavy-loaded goods (Chuan-shaped pallet) in a preferred embodiment of the utility model;

[0026] Figure 2 yes Figure 1 A side view of a stacker crane loading platform storage and retrieval device for heavy-loaded goods;

[0027] Figure 3 yes Figure 1 A top view of a stacker crane loading platform storage and retrieval device for heavy-loaded goods;

[0028] Figure 4 yes Figure 1 Schematic diagram of the replaceable (flat bottom tray);

[0029] Figure 5 yes Figure 1 A schematic diagram of the structure of a cargo platform, cargo to be stored and retrieved, and a telescopic push-pull fork in a cargo platform storage and retrieval device for a stacker crane for heavy cargo;

[0030] Figure 6 yes Figure 5 A magnified view of point A;

[0031] Figure 7 yes Figure 1 A schematic diagram of the structure of a cargo platform, cargo to be stored and retrieved, and a telescopic push-pull fork in a cargo platform storage and retrieval device for a stacker crane for heavy cargo;

[0032] Figure 8 yes Figure 7 Enlarged view of point B;

[0033] Figure 9 It is a schematic diagram of the connection between the cargo platform and the mobile component;

[0034] Description of the accompanying drawings: 100, shelf; 110, shelf body; 120, cargo storage area; 121, cargo storage position; 130, first roller;

[0035] 200, cargo platform; 210, cargo platform body; 220, second roller; 221, retaining ring;

[0036] 300. Goods to be stored or retrieved;

[0037] 400, telescopic push-pull fork; 410, fork body; 420, fork head; 430, stopper; 431, chamfer;

[0038] 500, moving assembly; 510, frame; 520, winch; 530, wire rope; 540, pulley;

[0039] 600. Pallet. DETAILED DESCRIPTION

[0040] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0041] In some comparative embodiments, for heavy-loaded large cargo / double-deep storage applications, the following methods are often used: a combination of powered rollers + AGVs and non-powered roller shelves for storage on the loading platform; or a combination of powered rollers + push-pull forks (i.e., hook-pull rod moving devices) and smooth strip shelves on the loading platform. However, there are the following problems: the movement is relatively complex, and the slider is driven by a motor for translation. Once in position, the motor needs to rotate the hook plate to adjust the direction, and the hook plate needs to be inserted into the pallet slot. This places extremely high demands on the stopping accuracy of the forks and pallets, and conventional flat-bottomed pallets or "Chuan"-shaped pallets cannot be used. Additional customization of slots is required, which is costly. In addition, the push-pull rods of the hook plate are slender rods. When the stroke is long, the rods deform severely, affecting the stability and efficiency of picking up goods. In addition, the push-pull forks require powered rollers for auxiliary transportation, and the entire process switches, which greatly reduces efficiency. It can be seen that the comparative embodiments have problems such as high cost and low efficiency.

[0042] Reference Figures 1 to 9 As shown, the embodiment of the present invention provides a device for storing and retrieving heavy-loaded goods on a stacker loading platform, comprising:

[0043] The shelf 100 includes a shelf body 110 and a multi-layer cargo storage area 120 arranged on the shelf body 110 from top to bottom; the shelf body 110 is a frame structure, and the shelf body 110 includes a plurality of columns, and two adjacent columns are connected by a cross brace. The bottom of the shelf body 110 is fixed to the ground by bolts. Along the X direction, the cargo storage area 120 is provided with at least one cargo storage position 121, and the X direction is the storage and retrieval direction of cargo; the multi-layer cargo storage area 120 is provided with a first roller group for supporting and transporting the cargo 300 to be stored and retrieved, and the first roller group includes a plurality of first rollers 130 arranged at intervals along the X direction, and the first rollers 130 are rotatably connected to the shelf 100; the first rollers 130 are unpowered rollers.

[0044] The cargo platform 200 is located on one side of the shelf 100 along the X-direction. It rises and falls (i.e., moves along the Z-direction). The cargo platform 200 includes a cargo platform body 210 and a second roller assembly mounted on the cargo platform body 210 for supporting and transporting the cargo 300 to be stored and retrieved. The upper surface of the second roller assembly is flush with the upper surface of the first roller assembly. The cargo platform body 210 includes a base and side panels symmetrically arranged on either side of the top of the base along the Y-direction. The second roller assembly is mounted on top of the base. The second roller assembly includes a plurality of second rollers 220 spaced apart along the X-direction. The second rollers 220 are rotatably connected to the cargo platform 200. The second rollers 220 are unpowered rollers.

[0045] A telescopic push-pull fork 400 is connected to the cargo platform 200. The telescopic push-pull fork 400 comprises a fork body 410 and a fork head 420 that extends and retracts in the X direction. Stoppers 430 are provided at each end of the fork head 420. The cargo 300 to be accessed is positioned between the two stoppers 430, and the cargo 300 to be accessed does not contact the upper surface of the fork heads 420. In some embodiments, the distance between the two stoppers 430 is approximately 10-15 mm larger than the cargo, ensuring that the fork heads 420 can smoothly access the cargo with a positioning accuracy of ±3 mm.

[0046] Specifically, in this embodiment, the first roller 130 and the second roller 220 support the cargo 300 to be stored or retrieved. The cargo 300 is then picked up by a telescopic push-pull fork 400, allowing the cargo 300 to be transferred between the first roller 130 and the second roller 220. During this transfer process, the forks 420 of the telescopic push-pull fork 400 do not bear the weight of the cargo 300; instead, the weight of the cargo 300 is borne by the first roller 130 and the second roller 220. This reduces the demand for the telescopic push-pull fork 400 during the transfer process, thereby reducing costs. Furthermore, this embodiment achieves automated storage and retrieval through the equipment, resulting in high efficiency.

[0047] Furthermore, along the X direction, the first roller group and the second roller group are arranged opposite to each other.

[0048] Furthermore, two first roller groups are arranged at intervals along the Y direction, and the two first roller groups are symmetrically arranged with the centerline of the cargo storage space 121 as the axis of symmetry. Two second roller groups are also arranged at intervals along the Y direction, and the two second roller groups are symmetrically arranged with the centerline of the cargo platform body 210 as the axis of symmetry. Specifically, the two first roller groups or the two second roller groups provide more stable and reliable support for the cargo 300 to be stored or retrieved.

[0049] Furthermore, when there are two first roller groups, a retaining ring 221 is provided on the outer side of the first roller 130; when there are two second roller groups, a retaining ring 221 is provided on the outer side of the second roller 220. Specifically, in this embodiment, the retaining ring 221 can guide the goods 300 to be stored or retrieved placed on the first roller 130 or the second roller 220 during the transportation process.

[0050] Furthermore, the fork 420 of the telescopic push-pull fork 400 is positioned between the two sets of second rollers. Specifically, this allows the second rollers on both sides to support the cargo 300 to be stored or retrieved, while the telescopic push-pull fork 400 picks up the cargo 300 from the center, saving effort and providing stability and reliability. Furthermore, in some embodiments, the spacing between the two sets of second rollers can be varied to accommodate cargo of varying sizes.

[0051] There are at least two forks 420, spaced apart along the Y direction. Furthermore, the telescopic push-pull fork 400 is a bidirectional telescopic push-pull fork 400. Specifically, only one telescopic push-pull fork 400 is needed to transfer goods from the transfer vehicle to the loading platform 200 and from the loading platform 200 to the shelf 100, reducing equipment costs.

[0052] In some embodiments, the telescopic push-pull fork 400 is a multi-section telescopic push-pull fork 400. For example, the telescopic push-pull fork 400 is a two-section telescopic push-pull fork 400. In another example, the telescopic push-pull fork 400 is a three-section telescopic push-pull fork 400. Specifically, this can reduce the floor space required while enabling long-distance transport of goods.

[0053] Furthermore, a chamfer 431 is provided at the top position of the inner wall of the stopper 430. Specifically, the setting of the chamfer 431 facilitates the entry of the goods 300 to be stored and retrieved between the two stoppers 430.

[0054] Furthermore, the present application also includes a control unit (not shown) electrically connected to the cargo platform 200 and the telescopic push-pull fork 400. Specifically, in this embodiment, the control unit can control the cargo platform 200 and the telescopic push-pull fork 400 to coordinate with each other to achieve the lifting and lowering of the cargo platform 200, as well as the extension and retraction of the telescopic push-pull fork 400 to store and retrieve the cargo 300 to be stored or retrieved, thus achieving full automation.

[0055] Furthermore, the present application also includes a sensor for identifying the height position of the cargo platform 200, and the sensor is electrically connected to the control unit. Specifically, in this embodiment, the sensor can identify the height of the cargo platform 200 and transmit the signal to the control unit, so that the control unit can control the lifting platform to continue to rise (if the target height has not been reached) or stop (if the target height has been reached). In some embodiments, the sensor is a laser sensor, which includes a transmitter and a receiver; wherein one of the transmitter and the receiver is located on the lower crossbeam of the stacker below the cargo platform 200, and the other is located on the cargo platform 200.

[0056] Furthermore, the cargo platform 200 is raised and lowered by a moving assembly 500, which includes a frame 510, a hoist 520, a wire rope 530, and a pulley 540. The frame 510 may be a portal frame. The hoist 520 is connected to the frame 510, for example, the hoist 520 is connected to the outside of the frame 510. The cargo platform 200 is located in the frame 510, and the pulley 540 is rotatably connected to the frame 510. The wire rope 530 is wound around the hoist 520, and the free end of the wire rope 530 is wound around the pulley 540 and then connected to the cargo platform 200. Specifically, this embodiment achieves the up and down movement of the cargo platform 200 through the hoist 520, and the structure is stable and reliable.

[0057] In the process of transportation, a pallet 600 is placed between the cargo and the cargo platform 200. There are three types of pallets: Sichuan pallet, flat bottom pallet, etc. This application can be applied to Sichuan pallet (see Figure 1 ), and can also be applied to flat trays (see Figure 4 ) and other pallet forms with a wide range of applications.

[0058] This application uses a combination of a non-powered roller and a telescopic push-pull fork, which does not require power switching and does not require waiting time based on electrical principles, and has high cargo picking efficiency.

[0059] The process of picking up and placing goods using this application is as follows:

[0060] The telescopic push-pull fork 400 is installed on the cargo platform 200, and the cargo platform 200 is controlled to move to the corresponding position. The top of the fork head 420 on the telescopic push-pull fork 400 is a certain distance (for example, 25 mm) from the pallet. The telescopic push-pull fork 400 extends to the corresponding position, and the cargo platform 200 moves upward for a certain distance (for example, 15 mm). The fork head 420 on the telescopic push-pull fork 400 does not have vertical (i.e., Z direction) contact with the cargo; then the telescopic push-pull fork 400 relies on the blocks 430 at both ends of the fork head 420 to clamp the cargo, and the telescopic push-pull fork 400 extends and retracts to pull the cargo onto the cargo platform 200 or push it onto the shelf 100. During this process, the first roller 130 and the second roller 220 support the goods. The first roller 130 and the second roller 220 are in rolling friction contact with the goods, which can greatly reduce the friction force of the telescopic push-pull fork 400 pushing and pulling the goods, reduce the requirements for the fork, and reduce the power of the telescopic push-pull fork 400.

[0061] It is suitable for larger and heavier goods, and is also compatible with flat-bottom, Sichuan-shaped bottom, and customized pallets.

[0062] This application solves the storage of heavy-loaded large-size cargo (load below 6000kg, specifications 4000*4000 or 2500*4000*2), avoids the impact of the long stroke of the telescopic push-pull fork 400 on picking up goods caused by the disturbance deformation, and reduces the impact of the overturning moment on the stacker during heavy-load operations.

[0063] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A stacker crane loading platform storage and retrieval device for heavy-loaded goods, characterized by: include: The shelf comprises a shelf body and a multi-layer cargo storage area arranged on the shelf body from top to bottom; the cargo storage area is provided with at least one cargo storage position along the X direction, the X direction being the direction for storing and retrieving cargo; the multi-layer cargo storage area is provided with a first roller group for supporting and transporting cargo to be stored and retrieved, the first roller group comprising a plurality of first rollers arranged at intervals along the X direction, the first rollers being rotatably connected to the shelf; A cargo platform is provided on one side of the shelf along the X direction; the cargo platform is movable up and down; the cargo platform includes a cargo platform body and a second roller group provided on the cargo platform body for supporting and transporting the goods to be stored and retrieved, the upper surface of the second roller group being flush with the upper surface of the first roller group; the second roller group includes a plurality of second rollers spaced apart along the X direction, the second rollers being rotatably connected to the cargo platform; A telescopic push-pull fork is connected to the cargo platform; the telescopic push-pull fork includes a fork body and a fork head that is telescopic in the X direction, and blocks are respectively provided at both ends of the fork head; the cargo to be stored and retrieved is located between the two blocks, and the cargo to be stored and retrieved does not contact the upper surface of the fork head.

2. The stacker crane cargo platform storage and retrieval device for heavy-loaded cargo according to claim 1, characterized in that: Along the X direction, the first roller group and the second roller group are arranged opposite to each other.

3. The stacker crane cargo platform storage and retrieval device for heavy-load cargo according to claim 1, characterized in that: Along the Y direction, two groups of the first roller groups are arranged at intervals, and the two groups of the first roller groups are symmetrically arranged with the center line of the cargo storage position as the symmetry axis; And / or, along the Y direction, two groups of the second roller groups are arranged at intervals, and the two groups of the second roller groups are symmetrically arranged with the center line of the cargo platform body as the symmetry axis.

4. The cargo storage and retrieval device for a stacker crane loading platform for heavy-loaded cargo according to claim 3, characterized in that: When there are two first roller groups, a retaining ring is provided on the outer side of the first roller; when there are two second roller groups, a retaining ring is provided on the outer side of the second roller.

5. The cargo storage and retrieval device for a stacker crane loading platform for heavy-loaded cargo according to claim 1, characterized in that: The fork head of the telescopic push-pull fork is arranged between the two groups of the second roller groups.

6. The cargo storage and retrieval device for a stacker crane loading platform for heavy-loaded cargo according to claim 1, characterized in that: The telescopic push-pull fork is a bidirectional telescopic push-pull fork.

7. The cargo storage and retrieval device for a stacker crane loading platform for heavy-loaded cargo according to claim 1, characterized in that: A chamfer is provided at the top position of the inner wall of the stopper.

8. The cargo storage and retrieval device for a stacker crane loading platform for heavy-loaded cargo according to claim 1, characterized in that: It also includes a control unit electrically connected to the cargo platform and the telescopic push-pull fork.

9. The cargo storage and retrieval device for a stacker crane loading platform for heavy-loaded cargo according to claim 8, characterized in that: It also includes a sensor for identifying the height position of the cargo platform, and the sensor is electrically connected to the control unit.

10. The cargo storage and retrieval device for a stacker crane loading platform for heavy-load cargo according to claim 1, characterized in that: The cargo platform is lifted up and down by a moving assembly, which includes a frame, a winch, a wire rope and a pulley; the winch is connected to the frame, the cargo platform is located in the frame, the pulley is rotatably connected to the frame, the wire rope is wound around the winch, and the free end of the wire rope is wound around the pulley and then connected to the cargo platform.

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