A full-wheel drive tray four-way shuttle vehicle and rail shelf

Abstract

The present application relates to the field of shuttle vehicles, and specifically discloses a full-wheel drive tray four-way shuttle vehicle and a rail shelf, which comprises a vehicle body, the vehicle body is in the shape of "H"; a main rail walking assembly is located below the left side or the right side of the vehicle body; a walking driving assembly for driving the vehicle body to walk in two directions, the walking driving assembly is installed at the middle part of the vehicle body; a jacking assembly, the jacking assembly is installed at the middle part of the left side or the right side of the vehicle body, and the jacking assembly is installed between the sub-rail walking assembly and the vehicle body; a jacking driving assembly for driving the jacking assembly, the jacking driving assembly is installed at the middle part of the vehicle body; an electric control box is installed between the two ends of the vehicle body; a battery box is installed between the two ends of the vehicle body. In the present application, the space between the two ends of the side beam of the vehicle body is reserved, the electric control box and the battery box are respectively located between the relatively open spaces at the two ends of the side beam, and the freedom degree of selection and layout of electric devices such as the electric control box and the battery box is greatly increased.

Description

Technical Field

[0001] This invention relates to the field of shuttle technology, and more particularly to an all-wheel drive pallet four-way shuttle and a track rack. Background Technology

[0002] Most four-way shuttle vehicles on the market currently include two drive systems. To ensure that both systems have independent driving capabilities, a complex transmission mechanism must be designed inside the vehicle to transmit the torque of the drive motor or switch the direction of the drive system. This design undoubtedly increases the difficulty of vehicle body manufacturing, assembly, and maintenance, while also reducing the reliability of the entire system.

[0003] The complex internal structure of the vehicle results in limited installation space for electronic control components and batteries, which in turn affects the selection of electronic control components and battery models, thus limiting the shuttle's range. At the same time, the current industry trend requires the vehicle body to be thinner and thinner, which increases the difficulty of arranging the transmission mechanism in the vehicle body. Some shuttles use hydraulic systems for power transmission instead of transmission mechanisms. The layout and precision control requirements of hydraulic systems also increase the maintenance costs of hydraulic systems. Furthermore, the use of hydraulic systems reduces the overall shuttle's adaptability to low-temperature environments. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an all-wheel drive pallet four-way shuttle and track rack to solve the problem that the complex internal structure of the vehicle body results in a small amount of space reserved for the installation of electronic control components and batteries, which in turn affects the selection of electronic control components and battery components, thus limiting the shuttle's range.

[0005] To achieve the above objectives, the basic solution of the present invention is as follows: an all-wheel drive pallet four-way shuttle vehicle, comprising:

[0006] The vehicle body is H-shaped;

[0007] The main track travel assembly is installed at the four corners of the vehicle body;

[0008] Sub-track travel assembly, located on the left or right side below the vehicle body;

[0009] A travel drive assembly that drives the vehicle body to move in two directions, and the travel drive assembly is installed in the middle of the vehicle body;

[0010] The lifting assembly is installed in the middle of the left or right side of the vehicle body, and is installed between the sub-track traveling assembly and the vehicle body;

[0011] The lifting drive assembly is installed in the middle of the vehicle body;

[0012] An electrical control box that controls the lifting drive assembly and the traveling drive assembly is installed between the two ends of the vehicle body;

[0013] A battery box that supplies power to the lifting drive assembly, the walking drive assembly, and the electrical control box is installed between the two ends of the vehicle body.

[0014] The technical principle of this invention is as follows: The "H"-shaped vehicle body covers the sub-track walking assembly, main track walking assembly, walking drive assembly, lifting assembly, and lifting drive assembly, leaving space between the two ends of the vehicle body side beams. The electrical control box and battery box are located in the relatively open space between the two ends of the side beams, greatly increasing the freedom of selection and layout of electrical components such as the electrical control box and battery box. At the same time, the "H"-shaped vehicle body can fully and stably support and cover each structure in the track walking assembly, main track walking assembly, walking drive assembly, lifting assembly, and lifting drive assembly, achieving full protection for each structure and facilitating stable transmission. After each structure is encapsulated by the vehicle body, it is basically maintenance-free, with a clean and beautiful interior, avoiding the need for machining the positioning surface of such a large component as the vehicle body, thereby reducing processing costs and subsequent maintenance costs.

[0015] Furthermore, the walking drive component includes:

[0016] Drive motor;

[0017] The first reducer is fixedly connected to the power output end of the drive motor;

[0018] The first drive shaft is connected to the power output end of the first reducer at its middle section, and the axis of the first drive shaft is parallel to the middle section of the vehicle body.

[0019] Two fixed commutators are provided, located at both ends of the first drive shaft. The fixed commutators, drive motor, and first reducer are all fixedly mounted on the middle of the vehicle body.

[0020] The main track walking assembly includes:

[0021] The drive is driven by the follower commutator of the sub-track traveling assembly. There are four follower commutators, two of which are connected to the two sides opposite to the single fixed commutator.

[0022] The main track wheel is located on the side of the follower commutator away from the fixed commutator.

[0023] The telescopic universal joint is driven between the fixed commutator and the follower commutator, and is also driven between the main track wheel and the follower commutator.

[0024] The main rail travelling wheels, the telescopic universal joint and the fixed commutator are all installed on the left side or the right side of the vehicle body and located on the same plane.

[0025] Through the above arrangement, the power of the driving motor can be stably transmitted through the first speed reducer, the first transmission shaft and the fixed commutator. When the power is transmitted to the driven commutator through the telescopic universal joint, the lifting of the vehicle body can be controlled through the cooperation of the lifting assembly and the lifting driving assembly, so as to control whether the sub-rail travelling assembly or the main rail travelling wheel fits the rail. When the main rail travelling wheel fits the rail, the driven commutator transmits the power to the main rail travelling wheel through the telescopic universal joint, and the sub-rail travelling assembly idles; when the vehicle body is lifted and the main rail travelling wheel is disengaged from the rail, the driven commutator transmits the power to the sub-rail travelling assembly, and the main rail travelling wheel idles, so as to realize the switching of the traveling direction of the vehicle body. The shuttle realizes a transmission layout mode in which one driving motor drives all wheels, the overall layout is symmetrical and beautiful, leaving a large space in the middle of the vehicle body, which facilitates the layout of the electric control box and the battery box.

[0026] Further, the vehicle body comprises:

[0027] a main beam, the number of the main beam is one, and the longitudinal section contour of the main beam is I-shaped;

[0028] two side beams, the number of the side beams is two, the cross-section contour of the side beam is inverted L-shaped, the two side beams are symmetrically arranged along the vertical center plane of the main beam, a lifting notch for the driven commutator to lift is provided at a position of the side beam opposite to the driven commutator; a mounting seat rotationally connected with the main rail travelling wheel is fixedly arranged at one side of the end portion of the side beam close to the main beam.

[0029] Through the above arrangement, the I-shaped main beam can stably support the travelling driving assembly and the lifting driving assembly; the side beams can provide stable support for the installation and arrangement of the sub-rail travelling assembly and the main rail travelling assembly; meanwhile, when the vehicle body lifts, the mounting seat can stably drive the main rail travelling wheel to follow up and can support the main rail travelling wheel to rotate stably.

[0030] Further, the driving motor and the first transmission shaft are located between the two ends of one side of the main beam, and the lifting driving assembly is located between the two ends of the other side of the main beam.

[0031] Through the above configuration, the I-shaped main beam separates the drive assembly and the lifting assembly, stabilizing the transmission paths of the vehicle's driving and lifting power. It also links the lifting state of the vehicle with the direction of travel, enabling precise control of the vehicle. At the same time, when the main beam is laid upside down to form an I-shape in its longitudinal section, the arrangement of the main beam, side beams, drive assembly, and lifting assembly becomes more horizontal, resulting in a thinner overall vehicle body. Furthermore, the main beam and side beams are simpler and lighter than the frame structures in existing technologies, forming a unique lightweight frame structure that helps reduce manufacturing costs and increase range.

[0032] Furthermore, the sub-track walking component includes:

[0033] Wheel frame, located on the left and right sides of the vehicle body and on the side away from the center of the vehicle body;

[0034] The support plate is fixedly installed on one side of the wheel frame and extends towards the side closer to the vehicle body. The follower commutator is fixedly connected to the support plate.

[0035] Active rubber-coated wheel hub, which is rotatably mounted between wheel frames;

[0036] The drive shaft is connected to the power output end of the follower commutator. The end of the drive shaft away from the follower commutator passes through the side wall of the wheel frame and is coaxially and fixedly connected to a single active rubber-coated wheel hub.

[0037] With the above configuration, the wheel frame can stably support the rotation of the active rubber-coated wheel hub. After the follower commutator and the support plate are in cooperation, it is easy to stably transmit power to the active rubber-coated wheel hub. The telescopic universal joint on the side of the follower commutator keeps the power transmission stable.

[0038] Furthermore, the sub-track walking component also includes:

[0039] Several driven shafts, the axis of the driven shaft is parallel to the axis of the drive shaft, and both ends of the driven shaft are rotatably connected to the wheel frame;

[0040] Several driven rubber-coated wheel hubs are coaxially and fixedly mounted on the driven shaft;

[0041] Several timing belts are tensioned and mounted on the driven shaft and the drive shaft.

[0042] With the above configuration, the driven rubber-coated wheel hub, in conjunction with the synchronous belt and the driven shaft, can divert the power from the drive shaft to the driven rubber-coated wheel hub, so that the shuttle car receives stable support from multiple driven and active rubber-coated wheel hubs during turning and moving, making the shuttle car move more stably.

[0043] Furthermore, the lifting drive component includes:

[0044] Lifting motor;

[0045] The second reducer is connected to the power output end of the lifting motor;

[0046] The second drive shaft is fixedly connected to the power output end of the second reducer at its middle section, and the axis of the second drive shaft is parallel to the axis of the main beam; the lifting motor and the second reducer are both fixedly installed on the middle of the vehicle body; the second drive shaft is cross-shaped and arranged on the upper side of the telescopic universal joint.

[0047] The lifting components include:

[0048] The lead screw push rod has an auxiliary telescopic universal joint coaxially installed between its power input end and the second transmission shaft. The axis of the lead screw push rod is perpendicular to the axis of the second transmission shaft. The outer wall of the lead screw push rod is provided with a housing, which is fixedly connected to the side beam.

[0049] The scissor lift mechanism is vertically arranged. One end of the upper side of the scissor lift mechanism is fixedly connected to the side beam and horizontally slidably connected to the other end of the upper side of the scissor lift mechanism. The other end of the upper side of the scissor lift mechanism is connected to the end of the lead screw push rod. One end of the lower side of the scissor lift mechanism is fixedly connected to the wheel frame and horizontally slidably connected to the other end of the lower side of the scissor lift mechanism.

[0050] With the above setup, when the vehicle body is lifted, the lifting motor drives the second transmission shaft and auxiliary telescopic universal joint to rotate forward through the second reducer. At this time, the power is transmitted to the lead screw pusher, which pushes the upper end of the scissor mechanism to move away from the center of the side beam, causing the top of the scissor mechanism to move upward. The scissor mechanism and the vehicle body are lifted as a whole. At this time, the side beam and the mounting seat drive the main track wheels to move upward, and the main track wheels disengage from the track. At this time, the shuttle can run on the reversing track and the sub-track. When it runs directly under the item, the scissor mechanism is pushed again, and the vehicle body can lift the item to the highest position, disengage from the support frame, and thus run on the sub-track with the load. Conversely, the vehicle body moves downward, the main track wheels are in contact with the track, the sub-track walking components are retracted, and the driving hub and driven hub disengage from the sub-track. The shuttle can run on the main track. Thus, through the cooperation of the sub-track walking components, the main track walking wheels, the walking drive components, the lifting components, and the lifting drive components, the switching of the running direction and working state can be realized.

[0051] Furthermore, there are two scissor mechanisms under the single-sided beam. The two scissor mechanisms are parallel to each other, and a tie rod is horizontally arranged between the two scissor mechanisms. The two ends of the tie rod are respectively hinged to the horizontally sliding ends of the two scissor mechanisms.

[0052] With the above configuration, the four scissor lift mechanisms under the side beams on both sides can stably drive the vehicle body to rise and fall synchronously in the vertical direction during lifting and lowering, thereby improving the stability of the vehicle body lifting and lowering.

[0053] The present invention also aims to provide a rail rack, including main rails, reversing rails, sub-rails, support frames, and an all-wheel drive pallet four-way shuttle. The reversing rails are located between the main rails, and the sub-rails are located between the support frames. Both the active rubber-coated wheel hubs and the driven rubber-coated wheel hubs can roll along the reversing rails or the sub-rails, and the main rail wheels can all roll along the main rails.

[0054] The reversing track and the sub-track are both higher than the main track, and the reversing track and the sub-track are opposite each other and aligned in both horizontal and vertical positions;

[0055] A gap is provided between the end of the reversing track and the end of the sub-track for the installation of the main track and for the travel of the main track wheels. The longitudinal cross-sectional width of the gap is less than the center distance between two adjacent active or driven rubber-coated wheel hubs.

[0056] The technical principle of this invention is as follows: the main track can cooperate with the main track wheels, and the reversing track and sub-track can cooperate with the active and driven rubber-coated wheel hubs, enabling the shuttle to transfer items from the support frame to the sub-track via the reversing track, facilitating the retrieval and transfer of items; simultaneously, by controlling the gap, the lowest point of the shuttle body maintains a sufficient gap with the reversing track during the operation of the main track, also facilitating the transfer of the shuttle body from the reversing track to the sub-track; in use, state one is when the lifting component initially lifts the shuttle body, causing the main track wheels to contact the track, and the shuttle body runs along the main track, facilitating the overall transfer of the shuttle body to the sub-track at this time; state two is the middle lifting position, where the main frame of the shuttle body is raised to a certain height, but below the height of the upper plane of the support frame, allowing the shuttle body to shuttle under the items; state three is the lifting limit position, where the shuttle body can lift the items above the upper plane of the support frame, thus carrying the goods on the sub-track.

[0057] Furthermore, the active rubber-coated wheel hub, the driven rubber-coated wheel hub, and the main track wheel are all coaxially fixed with tapered wheel flanges at the ends near the center of the vehicle body.

[0058] With the above settings, the conical wheel rim can limit and guide the rolling of the active rubber-coated wheel hub, the driven rubber-coated wheel hub, and the main track traveling wheel, so that the active rubber-coated wheel hub, the driven rubber-coated wheel hub, and the main track traveling wheel remain in contact with the track, making it less likely to derail and making the movement of the all-wheel drive pallet four-way shuttle more stable. Attached Figure Description

[0059] Figure 1 This is a schematic diagram of the axle-side structure of an all-wheel drive pallet four-way shuttle vehicle according to Embodiment 1 of the present invention.

[0060] Figure 2 for Figure 1 Exploded view of a four-way shuttle vehicle with all-wheel drive and pallet.

[0061] Figure 3 for Figure 1 A top view after removing the vehicle body.

[0062] Figure 4 This is a schematic diagram of the axial direction of a track rack in Embodiment 2 of the present invention.

[0063] Figure 5 for Figure 4 Side view of the medium-rail rack.

[0064] In the above-mentioned attached figures: vehicle body 10, main beam 101, side beam 102, mounting base 103, wheel frame 20, support plate 201, active rubber-coated wheel hub 202, drive shaft 203, driven shaft 204, driven rubber-coated wheel hub 205, synchronous belt 206, follower commutator 501, main track traveling wheel 502, telescopic universal joint 503, drive motor 60, first reducer 601, first transmission shaft 602, fixed commutator 603, lead screw push rod 701, scissor mechanism 702, lifting motor 80, second reducer 801, second transmission shaft 802, auxiliary telescopic universal joint 803, electrical control box 901, battery box 902, tapered wheel flange 111, main track 1, commutator track 2, sub-track 3, support frame 4. Detailed Implementation

[0065] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0066] Example 1

[0067] This embodiment is basically as follows: Figure 1 , Figure 2 and Figure 3 As shown, this embodiment of the invention proposes an all-wheel drive pallet four-way shuttle vehicle, including a vehicle body 10, a sub-track 3 traveling assembly, a main track traveling assembly that drives the sub-track traveling assembly on the left or right side of the vehicle body 10, a traveling drive assembly that drives the vehicle body 10 to travel in two directions, a lifting assembly, a lifting drive assembly that drives the lifting assembly, an electrical control box 901 that controls the lifting drive assembly and the traveling drive assembly, and a battery box 902 that supplies power to the lifting drive assembly, the traveling drive assembly, and the electrical control box 901; Figure 1 and 2 As shown, the vehicle body 10 is H-shaped. The vehicle body 10 includes a main beam 101 and two side beams 102. The longitudinal section of the main beam 101 is also H-shaped, and the main beam 101 is inverted to form an I-shape in the longitudinal section. The cross-sectional profile of the side beams 102 is inverted L-shaped. The two side beams 102 are symmetrically arranged along the vertical center plane of the main beam 101. The main beam 101 and the two side beams 102 are located on the same horizontal plane.

[0068] like Figure 2 and 3As shown, the walking drive assembly includes a drive motor 60, a first reducer 601, a first drive shaft 602, and two fixed commutators 603; the main track walking assembly includes four follower commutators 501 that drive the sub-track 3 walking assembly, four main track walking wheels 502, and eight telescopic universal joints 503. The first reducer 601 is a dual-output reducer, and the follower commutators 501 are dual-output same-direction commutators; the first reducer 601 is fixedly connected to the power output end of the drive motor 60; the middle part of the first drive shaft 602 is connected to the power output end of the first reducer 601, and the axis of the first drive shaft 602 is parallel to the axis of the main beam 101; the drive motor 60 and the first reducer 601 are both fixedly installed on... On the upper left side of the main beam 101, the first drive shaft 602 is rotatably mounted on the left side of the main beam 101. The two sides of the first reducer 601 are the power output ends connected to the first drive shaft 602. The power output of the first reducer 601 is perpendicular to the power output direction of the drive motor 60. Two fixed commutators 603 are located at both ends of the first drive shaft 602. The fixed commutators 603, the drive motor 60 and the first reducer 601 are all fixedly mounted on the main beam 101. The fixed commutators 603, the first reducer 601 and the first drive shaft 602 are located between the two ends on one side of the main beam 101. The main beam 101 can cover and protect the fixed commutators 603, the first reducer 601 and the first drive shaft 602.

[0069] At the same time, such as Figure 3 As shown, four telescopic universal joints 503 are installed between the four follower commutators 501 and the two sides of the fixed commutator 603. The follower commutators 501 are fixedly connected to the sub-track 3 traveling assembly. The two follower commutators 501 connected to a single fixed commutator 603 are located on the left and right sides of the fixed commutator 603. The main track traveling wheel 502 is located on the side of the follower commutator 501 away from the fixed commutator 603. The remaining four telescopic universal joints 503 are installed between the four main track traveling wheels 502 and the four follower commutators 501. The main track traveling wheels 502, telescopic universal joints 503, and fixed commutators 603 are all located on the same plane. Figure 2 As shown, a mounting base 103 that is rotatably connected to the main track wheel 502 is fixedly installed at the end of the side beam 102 near the main beam 101; the telescopic universal joint 503 and the follower commutator 501 are both covered by the side beam 102. The side beam 102 can cover and protect the telescopic universal joint 503 and the follower commutator 501, which facilitates stable power transmission.

[0070] like Figure 2 and 3As shown, the sub-track 3 traveling assembly includes a wheel frame 20, a support plate 201, four active rubber-coated wheel hubs 202, four drive shafts 203 connected to the power output end of the follower commutator 501, four driven shafts 204, four driven rubber-coated wheel hubs 205, and four synchronous belts 206. The wheel frame 20 is rectangular, with its length parallel to the axial direction of the side beam 102, and the side beam 102 is vertically opposite to the wheel frame 20 and located on the upper side of the wheel frame 20. The support plate 201 is welded to the side of the wheel frame 20 near the side beam 102, and the side of the support plate 201 away from the wheel frame 20 extends towards the side of the vehicle body 10. The follower commutator 501 is fixedly connected to the support plate 201 by bolts or other fasteners, and the side beam 102 and the follower commutator 501 are provided with a follower commutator for the follower to rotate. The lifting notch of the commutator 501 is raised and lowered; the active rubber-coated wheel hub 202 is rotatably mounted between the wheel frames 20; the end of the drive shaft 203 away from the follower commutator 501 passes through the side wall of the wheel frame 20 and is coaxially fixedly connected to the single active rubber-coated wheel hub 202; the rotation axis of the active rubber-coated wheel hub 202 is perpendicular to the rotation axis of the main track traveling wheel 502; the active rubber-coated wheel hub 202, the drive shaft 203 and the follower commutator 501 correspond one-to-one; at the same time, the axis of the driven shaft 204 is parallel to the axis of the drive shaft 203, and both ends of the driven shaft 204 are rotatably connected to the wheel frame 20; the driven rubber-coated wheel hub 205 is coaxially fixedly mounted on the driven shaft 204; the synchronous belt 206 is tensioned and mounted on the driven shaft 204 and the drive shaft 203; the driven rubber-coated wheel hub 205 is located at the end of the wheel frame 20.

[0071] like Figure 2 and 3As shown, the lifting drive assembly includes a lifting motor 80, a second reducer 801, a second drive shaft 802, and two auxiliary telescopic universal joints 803; the lifting assembly includes two lead screw push rods 701 and four scissor mechanisms 702. The lead screw push rods 701 are horizontally arranged worm gear jacks of model 1520S-T18-M12. The second reducer 801 is powered and connected to the power output end of the lifting motor 80. The middle part of the second drive shaft 802 is fixedly connected to the power output end of the second reducer 801, and the axis of the second drive shaft 802 is parallel to the axis of the main beam 101. The second drive shaft 802 is cross-shaped and arranged on the upper side of the telescopic universal joints 803. The lifting motor 80 and the second reducer 801 are both fixedly installed. On the upper right side of the main beam 101, the second drive shaft 802 is rotatably mounted on the right side of the main beam 101. The two sides of the second reducer 801 are the power output ends connected to the second drive shaft 802. The power output of the second reducer 801 is perpendicular to the power output direction of the lifting motor 80. One of the auxiliary telescopic universal joints 803 is coaxially mounted on the second drive shaft 802 near the middle of the second reducer 801. The other auxiliary telescopic universal joint 803 is coaxially mounted between the power input end of the lower lead screw push rod 701 and the second drive shaft 802. The axis of the lead screw push rod 701 is perpendicular to the axis of the second drive shaft 802. The outer wall of the lead screw push rod 701 is provided with a housing. The housing is fixedly connected to the side beam 102 by bolts.

[0072] like Figure 2 and Figure 3 As shown, the scissor lift mechanism 702 is vertically raised and lowered. The vertical plane where the scissor lift mechanism 702 is located is perpendicular to the axis of the main beam 101. The right end of the upper side of the lower right scissor lift mechanism 702 is fixedly connected to the side beam 102 by bolts and is horizontally slidably connected to the left end of the upper side of the scissor lift mechanism 702. The left end of the upper side of the scissor lift mechanism 702 is connected to the end of the lead screw push rod 701. The right end of the lower side of the scissor lift mechanism 702 is fixedly connected to the wheel frame 20 by bolts and is horizontally slidably connected to the left end of the lower side of the scissor lift mechanism 702. At the same time, there are two scissor lift mechanisms 702 under the side beam 102 on each side. The two scissor lift mechanisms 702 are parallel to each other, and a tie rod is horizontally arranged between the two scissor lift mechanisms 702. The two ends of the tie rod are respectively hinged to the horizontally sliding ends of the lower sides of the two scissor lift mechanisms 702.

[0073] In addition, such as Figure 1-3As shown, the electrical control box 901 is installed between the left ends of the two side beams 102; the battery box 902 is installed between the right ends of the two side beams 102; at the same time, a conical rim 111 is coaxially fixed on the end of the active rubber-coated wheel hub 202, the driven rubber-coated wheel hub 205, and the main track wheel 502 near the center of the vehicle body 10. The active rubber-coated wheel hub 202, the driven rubber-coated wheel hub 205, and the main track wheel 502 are all rubber-coated wheel hubs. The conical rim 111 can limit and guide the rolling of the active rubber-coated wheel hub 202, the driven rubber-coated wheel hub 205, and the main track wheel 502, so that the active rubber-coated wheel hub 202, the driven rubber-coated wheel hub 205, and the main track wheel 502 keep in contact with the track, making it less likely to derail, and making the movement of the all-wheel drive pallet four-way shuttle more stable.

[0074] In this embodiment, when an all-wheel drive pallet four-way shuttle is installed, the "H"-shaped vehicle body 10 completely covers the sub-track 3 traveling assembly, the main track traveling assembly, the traveling drive assembly, the lifting assembly, and the lifting drive assembly. This allows space to be reserved between the two ends of the side beams 102 of the vehicle body 10. The electrical control box 901 and the battery box 902 are located in the relatively open space between the two ends of the side beams 102, which greatly increases the freedom of selection and layout of electrical components such as the electrical control box 901 and the battery box 902. At the same time, the side beams 102 and the main beam 101 can fully and stably support and cover each structure in the sub-track 3 traveling assembly, the main track traveling assembly, the traveling drive assembly, the lifting assembly, and the lifting drive assembly, achieving full protection for each structure and facilitating stable transmission. After each structure is encapsulated by the vehicle body 10, it is basically maintenance-free, with a clean and beautiful interior, avoiding the need for machining the positioning surface of such a large component as the vehicle body 10, thereby reducing processing costs and subsequent maintenance costs.

[0075] Meanwhile, the "H"-shaped main beam 101 separates the driving drive assembly and the lifting drive assembly, stabilizing the driving power transmission and lifting power transmission path of the vehicle body 10. It also links the lifting state of the vehicle body 10 with the driving direction, enabling precise control of the vehicle body 10. When the "H"-shaped main beam 101 is inverted to form an "I" shape in the longitudinal section, the arrangement of the entire main beam 101, the side beams 102, the driving drive assembly, and the lifting drive assembly becomes more horizontal, making the entire vehicle body 10 thinner. Moreover, the main beam 101 and the side beams 102 are simpler and lighter than the frame structure in the prior art, forming a unique lightweight frame structure that helps reduce manufacturing costs and increase range.

[0076] The lifting assembly and lifting drive assembly incorporate a lifting motor 80, a second reducer 801, a second drive shaft 802, two lead screws 701, four scissor mechanisms 702, and two auxiliary telescopic universal joints 803. The lifting control of the vehicle body 10 adopts a stable mechanical structure instead of a hydraulic structure, which can adapt to low-temperature environments, making the entire all-wheel drive pallet four-way shuttle vehicle more adaptable to the environment.

[0077] Meanwhile, when using the all-wheel drive pallet four-way shuttle, the direction of travel of the all-wheel drive pallet four-way shuttle can be controlled through the electrical control box 901, and the lifting and lowering of the vehicle body 10 can be selected according to the needs; when it is necessary to convert to the rotation of the active rubber-coated wheel hub 202 and the driven rubber-coated wheel hub 205, the lifting motor 80 drives the second transmission shaft 802 and the auxiliary telescopic universal joint 803 to rotate in the forward direction through the second reducer 801. At this time, the power is transmitted to the lead screw push rod 701, and the lead screw push rod 701 pushes the upper end of the scissor mechanism 702 away from the center of the side beam 102. The movement causes the top of the scissor lift mechanism 702 to rise, resulting in an overall lifting of the scissor lift mechanism 702 body 10. At this time, the side beam 102 and mounting base 103 drive the main track wheel 502 to move upward, causing the main track wheel 502 to disengage from the track. Simultaneously, the telescopic universal joint 503 located on the side of the follower commutator 501 near the fixed commutator 603 continues to transmit the power from the drive motor 60, the first reducer 601, the first drive shaft 602, and the fixed commutator 603 to the follower commutator 501, which then transmits the power to the drive motor 60. On shaft 203, the drive shaft 203 synchronous belt 206 drives the driven rubber-coated wheel hub 205 and the driving rubber-coated wheel hub 202; during this process, the lifted vehicle body 10 can also pick up and put down the items to be conveyed; conversely, the upper end of the scissor mechanism 702 descends, the main track traveling wheel 502 is in contact with the track, the driving rubber-coated wheel hub 202 and the driven rubber-coated wheel hub 205 are disengaged from the sub-track 3, and the power transmitted by the drive motor 60, the first reducer 601, the first transmission shaft 602 and the fixed commutator 603 is still transmitted to the follower commutator 501. The follower commutator 501 transmits the power to the telescopic universal joint 503 on the side of the follower commutator 501 away from the fixed commutator 603. The telescopic universal joint 503 transmits the power to the main track traveling wheel 502, thereby changing the travel direction and power transmission method of the entire all-wheel drive pallet four-way shuttle. At the same time, it enables the sub-track 3 traveling component, main track traveling component, traveling drive component, lifting component and lifting drive component to cooperate to achieve the coordination of power transmission direction and the lifting state of the vehicle body 10, thereby realizing the all-wheel drive transmission layout.

[0078] During the above process, the telescopic universal joint 503 and the auxiliary telescopic universal joint 803 ensure that the vehicle body 10 maintains stable power transmission during lifting and lowering. They also provide a degree of flexibility to the all-wheel drive pallet four-way shuttle when the track surface is uneven. The use of universal joints and encapsulated transmission components eliminates the need for extensive maintenance, resulting in a clean and aesthetically pleasing internal structure. This avoids machining the positioning surfaces of large components like the vehicle body 10, thereby reducing manufacturing and maintenance costs.

[0079] Example 2

[0080] The main differences between Example 2 and Example 1 are as follows: Figure 4 and Figure 5 As shown, a rail rack is provided, including main rails 1, reversing rails 2, sub-rails 3, support frames 4, and an all-wheel drive pallet four-way shuttle. The reversing rails 2 are located between the main rails 1, and the sub-rails 3 are located between the support frames 4. Both the active rubber-coated wheel hub 202 and the driven rubber-coated wheel hub 205 can roll along either the reversing rail 2 or the sub-rail 3, and the main rail wheels 502 can all roll along the main rails 1. Figure 5 As shown, the rail surfaces of reversing track 2 and sub-track 3 are both higher than the rail surface of main track 1. Reversing track 2 and sub-track 3 are horizontally aligned and their horizontal and vertical positions are also aligned.

[0081] At the same time, such as Figure 4 and 5 As shown, there are a total of four active rubber-coated wheel hubs 202 and driven rubber-coated wheel hubs 205 in the wheel frame 20 on one side. The distance between the active rubber-coated wheel hubs 202 and driven rubber-coated wheel hubs 205 driven by a single synchronous belt 206 is the gap between the end of the reversing track 2 and the end of the sub-track 3. The longitudinal section width of the gap is smaller than the center distance between two adjacent active rubber-coated wheel hubs 202 and driven rubber-coated wheel hubs 205. This can prevent the active rubber-coated wheel hubs 202 and driven rubber-coated wheel hubs 205 from falling into the gap when passing through it, thus improving the smoothness of the all-wheel drive pallet four-way shuttle.

[0082] In this embodiment, when the all-wheel drive pallet four-way shuttle is placed on the initial main track 1, the main track wheels 502 are in contact with the main track 1. In this state, the all-wheel drive pallet four-way shuttle is either in the state of transferring items or in the state of moving along the main track 1 without carrying any items.

[0083] When the all-wheel drive pallet four-way shuttle needs to remove an item located on support frame 4, such as Figure 4 As shown, the all-wheel drive pallet four-way shuttle has three states, specifically:

[0084] State 1: The main track wheels 502 on the all-wheel drive pallet four-way shuttle are in contact with the main track 1, and the all-wheel drive pallet four-way shuttle moves to the state opposite the sub-track 3, and the all-wheel drive pallet four-way shuttle moves to the reversing track 2 under the guidance of the main track 1.

[0085] State 2: The vehicle body 10 is lifted to a medium height by the lifting assembly and lifting drive assembly. The main track traveling wheel 502 is separated from the main track 1. The active rubber-coated wheel hub 202 and the driven rubber-coated wheel hub 205 are in contact with the reversing track 2 and drive the entire all-wheel drive pallet four-way shuttle to move towards the support frame 4. At this time, the moving active rubber-coated wheel hub 202 and the driven rubber-coated wheel hub 205 pass over the lower position of the main track 1 and are combined with the sub-track 3, so that the all-wheel drive pallet four-way shuttle is transferred to the sub-track 3 and is located between the support frames 4.

[0086] In state two, when the vehicle body 10 moves directly under the item to be transferred, control the vehicle body 10 to continue lifting or lift to its limit, so that the item is removed from the support frame 4. Then control the all-wheel drive pallet four-way shuttle to move back onto the reversing track 2. At this time, control the vehicle body 10 to descend through the lifting component and lifting drive component. The main track traveling wheel 502 returns to the contact state with the main track 1. Continue to retract the lead screw push rod 701 and the scissor mechanism 702. The active rubber-coated wheel hub 202 and the driven rubber-coated wheel hub 205 disengage from the reversing track 2 and are raised to a certain height so that the wheel flange maintains a sufficient gap with the reversing track 2.

[0087] During the transfer of items, the all-wheel drive pallet four-way shuttle needs to be steered. The lifting and lowering of the vehicle body 10 and the direction of power transmission can still be controlled in the same way as above. The control is simple and reliable.

[0088] Finally, 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. A four-way shuttle vehicle with all-wheel drive and a pallet, characterized in that, include: The vehicle body is H-shaped; A main track travel assembly, which is installed at the four corners of the vehicle body; A sub-track travel assembly, wherein the sub-track travel assembly is located below the left or right side of the vehicle body; A driving assembly for driving the vehicle body to move in two directions, the driving assembly being installed in the middle of the vehicle body; A lifting assembly is installed at the middle of the left or right side of the vehicle body, and the lifting assembly is installed between the sub-track traveling assembly and the vehicle body; A lifting drive assembly for driving the lifting component, the lifting drive assembly being installed in the middle of the vehicle body; An electrical control box for controlling the lifting drive assembly and the traveling drive assembly, the electrical control box being installed between the two ends of the vehicle body; A battery box that supplies power to the lifting drive assembly, the walking drive assembly, and the electrical control box, the battery box being installed between the two ends of the vehicle body.

2. The all-wheel drive pallet four-way shuttle vehicle as described in claim 1, characterized in that, The walking drive component includes: Drive motor; The first reducer is fixedly connected to the power output end of the drive motor; The first drive shaft is connected to the power output end of the first reducer at its middle section, and the axis of the first drive shaft is parallel to the middle section of the vehicle body. A fixed commutator is provided, and there are two fixed commutators. The two fixed commutators are located at both ends of the first drive shaft. The fixed commutator, the drive motor and the first reducer are all fixedly installed on the middle part of the vehicle body. The main track walking assembly includes: The drive is driven by a follower commutator of the sub-track traveling assembly. The number of follower commutators is four, of which two follower commutators are connected to the two sides opposite to a single fixed commutator. The main track wheel is located on the side of the follower commutator away from the fixed commutator. The telescopic universal joint is driven between the fixed commutator and the follower commutator, and is also driven between the main track wheel and the follower commutator. The main track wheels, telescopic universal joints, and fixed commutators are all installed on the left or right side of the vehicle body and are located on the same plane.

3. The all-wheel drive pallet four-way shuttle vehicle as described in claim 2, characterized in that, The vehicle body includes: The main beam is one in number, and the longitudinal section profile of the main beam is in the shape of an "I". The side beams are of two types, and the cross-sectional profile of the side beams is inverted "L" shape. The two side beams are symmetrically arranged along the vertical center plane of the main beam. The side beams are provided with lifting notches for the lifting and lowering of the follower commutator at the opposite position of the side beams and the follower commutator. The end of the side beam is fixedly provided with a mounting seat that is rotatably connected to the main track traveling wheel at the side of the main beam.

4. The all-wheel drive pallet four-way shuttle vehicle as described in claim 3, characterized in that, The drive motor and the first transmission shaft are located between the two ends on one side of the main beam, and the lifting drive assembly is located between the two ends on the other side of the main beam.

5. The all-wheel drive pallet four-way shuttle vehicle as described in claim 4, characterized in that, The sub-track walking component includes: Wheel frame, the wheel frame being located on the left and right sides of the vehicle body and on a side away from the center of the vehicle body; A support plate is fixedly installed on one side of the wheel frame and extends towards the side closer to the vehicle body. The follower commutator is fixedly connected to the support plate. An actively rubber-coated wheel hub, which is rotatably mounted between wheel frames; A drive shaft connected to the power output end of a follower commutator, the end of which is away from the follower commutator passes through the side wall of the wheel carrier and is coaxially and fixedly connected to a single active rubber-coated wheel hub.

6. The all-wheel drive pallet four-way shuttle vehicle as described in claim 5, characterized in that, The sub-track walking component also includes: A plurality of driven shafts, wherein the axis of the driven shaft is parallel to the axis of the drive shaft, and both ends of the driven shaft are rotatably connected to the wheel frame; A plurality of driven rubber-coated wheel hubs, wherein the driven rubber-coated wheel hubs are coaxially fixedly mounted on the driven shaft; Several synchronous belts are tensioned and mounted on the driven shaft and the drive shaft.

7. The all-wheel drive pallet four-way shuttle vehicle as described in claim 6, characterized in that, The lifting drive component includes: Lifting motor; The second reducer is connected to the power output end of the lifting motor; The second drive shaft is fixedly connected to the power output end of the second reducer at its middle section, and the axis of the second drive shaft is parallel to the axis of the main beam; the lifting motor and the second reducer are both fixedly installed on the middle of the vehicle body; the second drive shaft is cross-shaped and arranged on the upper side of the telescopic universal joint; The lifting assembly includes: A lead screw push rod, wherein an auxiliary telescopic universal joint is coaxially installed between the power input end of the lead screw push rod and the second transmission shaft, the axis of the lead screw push rod is perpendicular to the axis of the second transmission shaft, and a housing is provided on the outer wall of the lead screw push rod, the housing being fixedly connected to the side beam; The scissor lift mechanism is vertically arranged. One end of the upper side of the scissor lift mechanism is fixedly connected to the side beam and horizontally slidably connected to the other end of the upper side of the scissor lift mechanism. The other end of the upper side of the scissor lift mechanism is connected to the end of the lead screw push rod. One end of the lower side of the scissor lift mechanism is fixedly connected to the wheel frame and horizontally slidably connected to the other end of the lower side of the scissor lift mechanism.

8. The all-wheel drive pallet four-way shuttle vehicle as described in claim 7, characterized in that, The number of scissor mechanisms under the side beam on one side is two. The two scissor mechanisms are parallel to each other, and a tie rod is horizontally arranged between the two scissor mechanisms. The two ends of the tie rod are respectively hinged to the horizontal sliding end of the two scissor mechanisms on the lower side.

9. A rail-mounted rack, characterized in that, It includes a main track, a reversing track, a sub-track, a support frame, and a four-way all-wheel drive pallet shuttle as described in any one of claims 6-8. The reversing track is located between the main tracks, and the sub-track is located between the support frames. Both the active rubber-coated wheel hub and the driven rubber-coated wheel hub can roll along the reversing track or the sub-track, and the main track wheels can roll along the main track. The reversing track and the sub-track are both higher than the track surface of the main track, and the reversing track and the sub-track are opposite each other and aligned in both horizontal and vertical positions; A gap is provided between the end of the reversing track and the end of the sub-track for the installation of the main track and for the travel of the main track wheels. The longitudinal cross-sectional width of the gap is less than the center distance between two adjacent active or driven rubber-coated wheel hubs.

10. A track rack as described in claim 9, characterized in that, The active rubber-coated wheel hub, the driven rubber-coated wheel hub, and the main track wheel are all coaxially fixed with tapered rims at the ends near the center of the vehicle body.

Images