Warehousing system based on four-way shuttle vehicle and hoister

Abstract

The invention discloses a warehousing system based on four-way shuttle vehicles and hoisters, which comprises a plurality of layers of goods shelves, a plurality of lifting devices and a plurality of lifting devices, the four-way shuttle vehicle comprises a vehicle body and a tray installed on the vehicle body in a lifting mode. The lifting frame is arranged on the front side of the goods shelf and located at the front end of the channel. The lifting machine is installed on the lifting frame in a lifting mode, the lifting machine is provided with two cargo bearing rails distributed in a bilateral symmetry mode and a trolley rail distributed between the two cargo bearing rails, and the horizontal height of the cargo bearing rails is larger than that of the trolley rail; after goods loaded by the four-way shuttle vehicle enter the trolley track through the channel, the tray places the loaded goods on the goods bearing track, and then the four-way shuttle vehicle drives out of the trolley track. After the four-way shuttle vehicle takes the goods from the goods shelf, the goods can be directly placed on the elevator, then the next task can be executed, the four-way shuttle vehicle does not need to move to the designated layer of the goods shelf together with the taken goods along with the elevator, and the warehouse management efficiency can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of storing single or sequentially arranged objects in a warehouse or storehouse, and in particular to a storage system based on a four-way shuttle and an elevator. Background Art

[0002] The shuttle rack storage system is a high-density storage system, which consists of racks, trolleys, elevators, and forklifts. When storing goods: the elevator and shuttle are at the front end of the fixed rails on the bottom layer of the rack, and the forklift places the goods on the shuttle at the front end of the fixed rails in the rack aisle. Through the lifting of the elevator and the shuttle shuttling in the aisle, the shuttle can carry the palletized goods and place the goods at the designated position of the shelf; when picking up goods: the elevator drives the shuttle to move to the designated layer height of the shelf, and the shuttle enters the aisle and drives the designated goods back to the elevator. The elevator drives the shuttle to descend to the front end of the fixed rails on the bottom layer of the shelf, and then the forklift is used to remove the palletized goods from the shuttle.

[0003] In the above-mentioned dense storage system in which the four-way shuttle is combined with an elevator, when the elevator and the four-way shuttle are changing layers or entering and exiting the warehouse, the four-way shuttle needs to be lifted and lowered together with the elevator to achieve the change of layers of goods. Only after the current change of layers or entry and exit of goods is completed can the next change of layers or entry and exit of goods be carried out, which affects the management efficiency of the storage system for goods. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a storage system that is conducive to the management efficiency of goods, and the technical solution adopted includes:

[0005] A storage system based on a four-way shuttle and an elevator, comprising:

[0006] Multi-layered shelves, each with aisles;

[0007] A four-way shuttle vehicle comprises a vehicle body and a tray which can be lifted and mounted on the vehicle body;

[0008] A lifting frame, arranged at the front side of the shelf and located at the front end of the passage;

[0009] A hoist is installed on the lifting frame in a liftable manner. The hoist has two cargo-carrying rails that are symmetrically distributed on the left and right and a trolley rail distributed between the two cargo-carrying rails. The cargo-carrying rails are higher than the trolley rails. The hoist can be lifted and lowered on the lifting frame so that the trolley rail on the hoist can be docked with a channel on any layer of the shelf.

[0010] After the four-way shuttle vehicle loaded with goods enters the trolley track through the passage, the pallet and the goods loaded thereon are placed on the goods carrying track, and then the four-way shuttle vehicle drives out of the trolley track.

[0011] A technical solution adopted by an embodiment of the present invention to solve its technical problem is: the elevator includes a fixed frame, two chain mechanisms, and a chain driving mechanism, the two chain mechanisms are respectively arranged on opposite sides of the two fixed frames, each of the chain mechanisms includes a transmission chain and a lower sprocket and two upper sprockets rotatably mounted on the fixed frame, and the two upper sprockets are distributed on the front and rear sides of the upper end of the fixed frame, the lower sprocket is distributed below the two upper sprockets, the transmission chain is wound around the lower sprocket and the two upper sprockets and engages with them, the chain driving mechanism is installed in the fixed frame and distributed between the two lower sprockets, the chain driving mechanism is connected to the two lower sprockets in driving manner, and the transmission chain between the two upper sprockets constitutes the cargo carrying track.

[0012] A technical solution adopted by an embodiment of the present invention to solve its technical problem is: the chain drive mechanism includes a dual-axis motor and two connecting shafts, the dual-axis motor is installed in a fixed frame, the two connecting shafts are arranged on both sides of the dual-axis motor and are installed on the fixed frame through bearings that rotate with them, one end of the two connecting shafts is respectively connected to the two output shafts of the dual-axis motor through a universal coupling, and the other end is respectively connected to the two lower sprockets.

[0013] A technical solution adopted by an embodiment of the present invention to solve its technical problem is: each chain mechanism also includes two limit members, the two limit members are arranged between the upper sprocket and the lower sprocket, and the transmission chain passes around the upper sprocket and passes between the two limit members and then is wrapped around the two upper sprockets.

[0014] A technical solution adopted by an embodiment of the present invention to solve its technical problem is: the lifting machine also includes a lifting drive mechanism and two driving gears, the two driving gears are rotatably installed on the left and right sides of the fixed frame, the lifting drive mechanism is installed on the fixed frame and is connected to the two driving gears in a transmission manner, the lifting frame includes two support columns distributed at intervals along the left and right directions, and the two sides of the two support columns close to each other are respectively installed with vertically distributed racks, the fixed frame is arranged between the two support columns, and the two driving gears are respectively engaged with the two racks.

[0015] A technical solution adopted by an embodiment of the present invention to solve its technical problem is: guide wheel assemblies are respectively provided on the left and right sides of the fixed frame, and the two guide wheel assemblies include four longitudinal guide wheels rotatably installed on the fixed frame along the front and rear directions, and the four longitudinal guide wheels are distributed at the four corners of a rectangle, and the support column passes through the rectangle enclosed by the four longitudinal guide wheels so that the wheel surfaces of the four longitudinal guide wheels are in rolling contact with the support column.

[0016] The technical solution adopted by an embodiment of the present invention to solve its technical problem is: the guide wheel assembly also includes a transverse guide wheel, which is rotatably installed on the side wall of the fixed frame along the left and right directions and is in rolling contact with the support column.

[0017] The technical solution adopted by an embodiment of the present invention to solve the technical problem is: two strip profiles are installed on the upper end of the fixed frame, and the two strip profiles are horizontally distributed along the front-to-back direction and constitute the trolley track.

[0018] A technical solution adopted by an embodiment of the present invention to solve its technical problem is: a driving assembly and multiple lifting assemblies are provided on the vehicle body, each of the lifting assemblies includes a rotating cylinder and a lifting member, the rotating cylinder can be horizontally rotatably installed on the vehicle body, the lifting member is inserted into the rotating cylinder and threadedly connected thereto, the tray is connected to the multiple lifting members, the driving assembly is transmission-connected to the rotating cylinder, and is used to drive the rotating cylinder to rotate to drive the lifting member to rise and fall to realize the lifting of the tray.

[0019] A technical solution adopted by an embodiment of the present invention to solve its technical problems is: the driving assembly includes a driving member and a plurality of linkage rods, and a first gear member is coaxially fixedly installed on each of the rotating cylinders. All linkage rods are horizontally and rotatably installed on the vehicle body and distributed between two adjacent rotating cylinders. Second gear members are respectively provided at both ends of the linkage rods, and the two ends of the linkage rods extend to the vicinity of the corresponding rotating cylinders and mesh with the first gear member. The driving member is transmission-connected to any one of the linkage rods, and the driving member drives the linkage rods to rotate and drives all lifting members to lift and lower.

[0020] The beneficial effects of the present invention are as follows: after the four-way shuttle car takes goods from the shelf, it can directly place the goods on the elevator and then execute the next task. The four-way shuttle car does not need to move to the designated layer of the shelf together with the taken-out goods along with the elevator, which is beneficial to improving the efficiency of warehouse management. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 Schematic diagram of the structure of the storage system based on the four-way shuttle and the elevator in this embodiment;

[0023] Figure 2 This is a front view based on the four-way shuttle and the elevator in this embodiment;

[0024] Figure 3 This is a schematic diagram of the structure when the four-way shuttle vehicle enters the trolley track in this embodiment;

[0025] Figure 4 Schematic diagram of the structure of the elevator in this embodiment;

[0026] Figure 5 Schematic diagram of the structure of the guide assembly in this embodiment;

[0027] Figure 6 Schematic diagram of the structure of the chain mechanism in this embodiment;

[0028] Figure 7 Schematic diagram of the structure of the lifting drive mechanism in this embodiment;

[0029] Figure 8 This is a schematic diagram of the structure of the four-way shuttle in this embodiment;

[0030] Fig. 9 This is a schematic diagram of the structure of the vehicle body in this embodiment;

[0031] Fig.10 Schematic diagram of the structure of the lifting assembly in this embodiment. DETAILED DESCRIPTION

[0032] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0033] In the description of the present invention, the meaning of "above", "below", "exceed", etc. is not inclusive of the number itself, and the meaning of "above", "below", "within", etc. is inclusive of the number itself. If there is a description of "first" or "second", it is only used to distinguish the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0034] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0035] In the present invention, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected or detachably connected or integrally formed; they can be mechanically connected; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0036] Reference Figure 1-10 , an embodiment of the present application is proposed, and the storage system based on a four-way shuttle and an elevator described in this embodiment includes:

[0037] A multi-layer shelf 10, each layer of which is provided with a passage;

[0038] The four-way shuttle vehicle 20 includes a vehicle body 41 and a tray 42 which is escalably mounted on the vehicle body 41;

[0039] A lifting frame 30 is arranged at the front side of the shelf 10 and located at the front end of the passage;

[0040] The hoist 40 is installed on the lifting frame 30 in a lifting manner. The hoist 40 has two cargo-carrying rails 44 that are symmetrically distributed on the left and right and a trolley rail 43 that is distributed between the two cargo-carrying rails 44. The cargo-carrying rails 44 are higher in level than the trolley rails 43. The hoist 40 can be lifted and lowered on the lifting frame 30 so that the trolley rails 43 on the hoist 40 can be docked with the passage of any layer on the shelf 10.

[0041] After the four-way shuttle 20 loaded with goods enters the trolley track 43 through the passage, the pallet 42 and the goods loaded thereon are placed on the goods carrying track 44 , and then the four-way shuttle 20 drives out of the trolley track 43 .

[0042] The shelf 10 includes multiple layers, which are high-rise shelves 10. The high-rise shelves 10 are the basic structure for dense storage. The shelf 10 is built with metal profiles to form an alley, and a passage is set in the alley so that the four-way shuttle 20 can shuttle in the alley to store and retrieve goods.

[0043] The present application sets a lifting frame 30 on the front side of the shelf 10, that is, the front side of the passage, and the elevator 40 is installed on the lifting frame 30 so that it can be raised and lowered. The elevator 40 is provided with a trolley track 43 that matches the four-way shuttle 20. The elevator 40 can be raised and lowered on the lifting frame 30 so that the trolley track 43 on it can be docked with the passage of any layer on the shelf 10. The four-way shuttle 20 can move from the passage to the trolley track 43 or carry the elevator 40 to realize the layer change or exit of the four-way shuttle 20.

[0044] When the four-way shuttle 20 has finished taking items from the shelf 10 and has moved the loaded goods from the passage to the trolley track 43, the four-way shuttle 20 controls its pallet 42 to descend, so that the goods loaded on the four-way shuttle 20 are placed on the goods carrying track 44, and the four-way shuttle 20 can return to the passage from the trolley track 43. At this time, the elevator 40 can independently drive the taken-out goods to move along the lifting frame 30 to the bottom layer of the shelf 10, and the forklift can take the goods on the pallet 42 from the shuttle to realize the subsequent transfer of the goods.

[0045] In this embodiment, after the four-way shuttle 20 picks up items from the shelf 10, it can place the goods directly on the elevator 40 and then execute the next task. The four-way shuttle 20 does not need to move to the designated layer of the shelf 10 together with the taken-out goods along with the elevator 40, which is beneficial to improving the efficiency of warehouse management.

[0046] Specifically, the elevator 40 includes a fixed frame 401, two chain mechanisms 402, and a chain driving mechanism 403. The two chain mechanisms 402 are respectively arranged on opposite sides of the two fixed frames 401. Each of the chain mechanisms 402 includes a transmission chain 4021 and a lower sprocket 4022 and two upper sprockets 4023 rotatably mounted on the fixed frame 401, and the two upper sprockets 4023 are distributed on the front and rear sides of the upper end of the fixed frame 401. The lower sprocket 4022 is distributed below the two upper sprockets 4023. The transmission chain 4021 is wound around the lower sprocket 4022 and the two upper sprockets 4023 and engages with them. The chain driving mechanism 403 is installed in the fixed frame 401 and distributed between the two lower sprockets 4022. The chain driving mechanism 403 is connected to the two lower sprockets 4022 in transmission. The transmission chain 4021 between the two upper sprockets 4023 constitutes the cargo carrying track 44.

[0047] After taking items from the shelf 10, the four-way shuttle 20 can directly place the goods on the two transmission chains 4021, and drive the two transmission chains 4021 to rotate through the chain drive mechanism 403, and the two transmission chains 4021 drive the goods carried by the two to move, so that the elevator 40 can connect to the cargo conveyor to achieve rapid delivery of goods.

[0048] Specifically, the chain drive mechanism 403 includes a dual-axis motor 4031 and two connecting shafts 4032. The dual-axis motor 4031 is installed in a fixed frame 401. The two connecting shafts 4032 are arranged on both sides of the dual-axis motor 4031 and are installed on the fixed frame 401 through bearings that rotate with them. One end of the two connecting shafts 4032 is respectively connected to the two output shafts of the dual-axis motor 4031 through universal joints 4033, and the other ends are respectively connected to the two lower sprockets 4022, which can reliably transmit torque and motion, thereby realizing stable transmission of the dual-axis motor 4031 to the lower sprocket 4022 and stable transportation of goods.

[0049] Preferably, each chain mechanism 402 also includes two limit members 4024, which are arranged between the upper sprocket 4023 and the lower sprocket 4022. The transmission chain 4021 bypasses the upper sprocket 4023 and passes between the two limit members 4024 before being wound around the two upper sprockets 4023, so as to avoid the transmission chain 4021 occupying too much space.

[0050] In this embodiment, the lifting machine 40 also includes a lifting drive mechanism 404 and two driving gears 405. The two driving gears 405 are rotatably installed on the left and right sides of the fixed frame 401. The lifting drive mechanism 404 is installed on the fixed frame 401 and is transmission-connected with the two driving gears 405. The lifting frame 30 includes two support columns 301 spaced apart along the left and right directions. The two support columns 301 are each provided with a vertically distributed rack 302 on one side close to each other. The fixed frame 401 is arranged between the two support columns 301, and the two driving gears 405 are respectively meshed with the two racks 302.

[0051] The lifting drive mechanism 404 drives two driving gears 405 to rotate so that the fixed frame 401 is lifted and lowered along the rack 302 .

[0052] Further, preferably, guide wheel assemblies are respectively provided on the left and right sides of the fixed frame 401, and the two guide wheel assemblies include four longitudinal guide wheels 406 rotatably installed on the fixed frame 401 along the front-rear direction, and the four longitudinal guide wheels 406 are distributed in the four corners of a rectangle. The support column 301 passes through the rectangle formed by the four longitudinal guide wheels 406 so that the wheel surfaces of the four longitudinal guide wheels 406 are in rolling contact with the support column 301, thereby enabling the fixed frame 401 to stably climb or descend along the support column 301.

[0053] The guide wheel assembly also includes a transverse guide wheel 407, which is rotatably installed on the side wall of the fixed frame 401 in the left-right direction and in rolling contact with the support column 301 to prevent the fixed frame 401 from shaking on the support column 301 in the left-right direction and the front-back direction.

[0054] In this embodiment, two strip profiles 408 are installed on the upper end of the fixed frame 401. The two strip profiles 408 are horizontally distributed along the front-to-back direction and constitute the trolley track 43. Referring to the drawings, the cross-sections of the two strip profiles 408 are L-shaped, providing a running track for the four-way shuttle 20 and limiting the four-way shuttle 20 at the same time.

[0055] The lower end of the four-way shuttle 20 is provided with wheels for shuttling and a shuttle drive mechanism for driving the wheels to rotate for moving. The installation position, connection structure and working principle of the wheels and the shuttle drive mechanism of the four-way shuttle 20 belong to the prior art in the field and will not be described in detail in this embodiment.

[0056] In this embodiment, a driving assembly 411 and a plurality of lifting assemblies 412 are provided on the vehicle body 41, each of the lifting assemblies 412 includes a rotating cylinder 4121 and a lifting member 4122, the rotating cylinder 4121 can be horizontally rotatably installed on the vehicle body 41, the lifting member 4122 is inserted into the rotating cylinder 4121 and threadedly connected thereto, the tray 42 is connected to the plurality of lifting members 4122, the driving assembly 411 is transmission-connected to the rotating cylinder 4121, and is used to drive the rotating cylinder 4121 to rotate so as to drive the lifting member 4122 to rise and fall to realize the lifting and falling of the tray 42.

[0057] As shown in the accompanying drawings, four lifting components 412 are arranged on the vehicle body 41 . The four lifting components 412 are distributed at four corners of a rectangle. When the driving component 411 drives the rotating cylinder 4121 to rotate, the four lifting components 4122 drive the tray 42 to move up and down.

[0058] Specifically, the driving assembly 411 includes a driving member 4111 and a plurality of linkage rods 4112, and a first gear member 4113 is coaxially fixedly installed on each of the rotating cylinders 4121. All linkage rods 4112 are horizontally and rotatably installed on the vehicle body 41 and are distributed between two adjacent rotating cylinders 4121. Second gear members 4114 are respectively provided at both ends of the linkage rods 4112, and the two ends thereof respectively extend to the vicinity of the corresponding rotating cylinders 4121 and mesh with the first gear member 4113. The driving member 4111 is transmission-connected with any one of the linkage rods 4112, and the driving member 4111 drives the linkage rods 4112 to rotate and drive all lifting members 4122 to lift and lower.

[0059] As shown in the accompanying drawings, there are four linkage rods 4112, which are respectively arranged between two adjacent rotating cylinders 4121 and are connected end to end in sequence. The driving member 4111 is connected with a linkage rod 4112. When the linkage rod 4112 drives the rotating cylinders 4121 at both ends to rotate, the rotating rotating cylinder 4121 drives other rotating cylinders 4121 to rotate synchronously, so that one driving member 4111 drives all lifting members 4122 to rise and fall synchronously.

[0060] Of course, the present invention is not limited to the above-mentioned embodiments, and those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications and substitutions are all included in the scope defined by the claims of this application.

Claims

1. A storage system based on a four-way shuttle and an elevator, characterized in that: include: A multi-layered shelf (10), each layer of which is provided with a passage; A four-way shuttle vehicle (20) comprises a vehicle body (41) and a tray (42) which can be lifted and mounted on the vehicle body (41); A lifting frame (30) is arranged on the front side of the shelf (10) and located at the front end of the passage; A hoist (40) is installed on the lifting frame (30) in a liftable manner. The hoist (40) has two cargo-carrying rails (44) that are symmetrically distributed on the left and right, and a trolley rail (43) distributed between the two cargo-carrying rails (44). The cargo-carrying rails (44) are higher in level than the trolley rails (43). The hoist (40) can be lifted and lowered on the lifting frame (30) so that the trolley rail (43) on the hoist is docked with a channel on any layer of the shelf (10); After the four-way shuttle vehicle (20) is loaded with goods and enters the trolley track (43) through the passage, the pallet (42) places the loaded goods on the goods carrying track (44), and then the four-way shuttle vehicle (20) drives out of the trolley track (43).

2. The storage system based on the four-way shuttle and the elevator according to claim 1 is characterized in that: The lifting machine (40) comprises a fixed frame (401), two chain mechanisms (402), and a chain driving mechanism (403). The two chain mechanisms (402) are respectively arranged on two opposite sides of the two fixed frames (401). Each of the chain mechanisms (402) comprises a transmission chain (4021) and a lower sprocket (4022) and two upper sprockets (4023) rotatably mounted on the fixed frame (401). The two upper sprockets (4023) are distributed on the front and rear sides of the upper end of the fixed frame (401). The lower sprocket (4022) is distributed below the two upper sprockets (4023); the transmission chain (4021) is wound around the lower sprocket (4022) and the two upper sprockets (4023) and engages with them; the chain driving mechanism (403) is installed in the fixed frame (401) and distributed between the two lower sprockets (4022); the chain driving mechanism (403) is connected to the two lower sprockets (4022) in transmission; and the transmission chain (4021) between the two upper sprockets (4023) constitutes the cargo carrying track (44).

3. The storage system based on the four-way shuttle and the elevator according to claim 2 is characterized in that: The chain drive mechanism (403) comprises a dual-axis motor (4031) and two connecting shafts (4032); the dual-axis motor (4031) is installed in a fixed frame (401); the two connecting shafts (4032) are arranged on both sides of the dual-axis motor (4031) and are installed on the fixed frame (401) via bearings that are rotatably matched therewith; one end of the two connecting shafts (4032) is respectively connected to the two output shafts of the dual-axis motor (4031) via a universal coupling (4033), and the other end is respectively connected to the two lower sprockets (4022).

4. The storage system based on a four-way shuttle and an elevator according to claim 2 is characterized in that: Each chain mechanism (402) further comprises two limiting members (4024), wherein the two limiting members (4024) are arranged between the upper sprocket (4023) and the lower sprocket (4022), and the transmission chain (4021) passes around the upper sprocket (4023) and passes between the two limiting members (4024) before being wound around the two upper sprockets (4023).

5. The storage system based on a four-way shuttle and an elevator according to any one of claims 2 to 4, characterized in that: The lifting machine (40) further comprises a lifting drive mechanism (404) and two driving gears (405), the two driving gears (405) being rotatably mounted on the left and right sides of the fixed frame (401), the lifting drive mechanism (404) being mounted on the fixed frame (401) and being transmission-connected to the two driving gears (405), the lifting frame (30) comprising two supporting columns (301) spaced apart along the left-right direction, the two supporting columns (301) being respectively mounted with vertically distributed racks (302) on the sides close to each other, the fixed frame (401) being arranged between the two supporting columns (301), and the two driving gears (405) being respectively meshed with the two racks (302).

6. The storage system based on the four-way shuttle and the elevator according to claim 5 is characterized in that: The fixed frame (401) is provided with guide wheel assemblies on the left and right sides respectively, and the two guide wheel assemblies include four longitudinal guide wheels (406) rotatably mounted on the fixed frame (401) along the front-rear direction, and the four longitudinal guide wheels (406) are distributed at the four corners of a rectangle, and the support column (301) passes through the rectangle formed by the four longitudinal guide wheels (406) so that the wheel surfaces of the four longitudinal guide wheels (406) are in rolling contact with the support column (301).

7. The storage system based on a four-way shuttle and an elevator according to claim 6, characterized in that: The guide wheel assembly further comprises a transverse guide wheel (407), which is rotatably mounted on the side wall of the fixed frame (401) in the left-right direction and in rolling contact with the support column (301).

8. The storage system based on a four-way shuttle and an elevator according to claim 2, characterized in that: Two strip-shaped profiles (408) are installed on the upper end of the fixed frame (401), and the two strip-shaped profiles (408) are horizontally distributed along the front-to-back direction and constitute the trolley track (43).

9. The storage system based on a four-way shuttle and an elevator according to claim 1, characterized in that: The vehicle body (41) is provided with a driving assembly (411) and a plurality of lifting assemblies (412), each of the lifting assemblies (412) comprising a rotating cylinder (4121) and a lifting member (4122), the rotating cylinder (4121) being horizontally rotatably mounted on the vehicle body (41), the lifting member (4122) being inserted into the rotating cylinder (4121) and being threadedly connected thereto, the tray (42) being connected to the plurality of lifting members (4122), the driving assembly (411) being transmission-connected to the rotating cylinder (4121), and being used for driving the rotating cylinder (4121) to rotate so as to drive the lifting member (4122) to rise and fall, thereby realizing the lifting and falling of the tray (42).

10. The storage system based on a four-way shuttle and an elevator according to claim 9, characterized in that: The driving assembly (411) comprises a driving member (4111) and a plurality of linkage rods (4112), each of the rotating cylinders (4121) being coaxially fixedly mounted with a first gear member (4113), all linkage rods (4112) being horizontally and rotatably mounted on the vehicle body (41) and distributed between two adjacent rotating cylinders (4121), and second gear members (4114) being respectively disposed at both ends of the linkage rods (4112), both ends of which respectively extend to be close to the corresponding rotating cylinders (4121) and mesh with the first gear member (4113), the driving member (4111) being transmission-connected with any one of the linkage rods (4112), and the driving member (4111) drives the linkage rods (4112) to rotate and drive all the lifting members (4122) to be lifted or lowered.

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