Layer-changing lifting equipment for four-way shuttle vehicle

Abstract

The layer-changing lifting equipment comprises a supporting frame and a lifting frame, two supporting rails are fixedly arranged on the lifting frame, compensation rails are arranged at the two ends of each supporting rail, and the two ends of each compensation rail are matched with the corresponding supporting rail and a running rail of the shuttle vehicle correspondingly; a fixed pipe corresponding to the compensation rail is fixedly arranged on the lifting frame, the fixed pipe is in sliding and rotating connection with the compensation rail, a convex block is fixedly arranged on the compensation rail, a guide groove is formed in the fixed pipe, and the convex block is arranged in the guide groove in a sliding mode; the guide groove comprises a transverse part and a vertical part; when the shuttle vehicle enters or runs out of the lifting frame, the compensation rail is opened, the two ends of the compensation rail are matched with the supporting rail and the running rail of the shuttle vehicle correspondingly, the shuttle vehicle stably enters or runs out of the lifting frame, when the lifting frame ascends and descends, the compensation rail is retracted, and the phenomenon that the compensation rail collides with the supporting frame and components on the supporting frame is avoided; and the safety of the lifting frame in the lifting process is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of logistics, warehousing and transportation technology, and in particular to a layer-changing lifting device for a four-way shuttle vehicle. Background Art

[0002] As a layer-changing device for docking shuttles, the four-way shuttle lift plays a key role in the intelligent warehousing system. It can realize the vertical transfer of four-way shuttles between different shelf levels, thereby breaking the operating limitations of a single plane and allowing for more three-dimensional and efficient use of storage space.

[0003] Generally, it includes a frame and a lifting platform. However, in actual use, when the shuttle car drives onto the lifting platform or drives out from the platform, due to the structure of the frame, there is a certain distance between the track on the lifting platform and the running track of the shuttle car. In the prior art, a crossbeam is set at each layer of the frame, and a short compensating track is installed on the crossbeam so that one end of the crossbeam is aligned with the running track of the shuttle car and the other end is aligned with the track on the lifting platform to ensure the smooth travel of the shuttle car.

[0004] However, the above method requires multiple beams to be arranged on the frame, and corresponding short rails to be arranged on the beams. This will result in the beams needing to be installed at positions corresponding to the running tracks on each layer during construction and arrangement of the frame. This installation method places restrictions on the overall structure of the frame, thereby affecting the overall structure of the frame, and requires short rails to be arranged on multiple beams, which makes the installation and construction of the frame very complicated. At the same time, the multiple short rails are not convenient for maintenance. Summary of the Invention

[0005] The purpose of the present invention is to provide a floor-changing lifting device for a four-way shuttle vehicle to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions: A floor-changing lifting device for a four-way shuttle vehicle comprises a support frame and a lifting frame, wherein two support rails are fixedly provided on the lifting frame, and both ends of the two support rails are provided with compensating rails, and the ends of the compensating rails are respectively adapted to the support rails and the travel track of the shuttle vehicle; A fixing tube corresponding to the compensation rail is fixedly provided on the lifting frame, the fixing tube is slidably and rotatably connected to the compensation rail, a protrusion is fixedly provided on the compensation rail, the fixing tube is provided with a guide groove, and the protrusion is slidably provided in the guide groove; The guide groove includes a transverse portion and a vertical portion; It also includes a limit component. When the lifting frame is lifting, the limit component limits the shuttle car. When the compensation rail on one side of the lifting frame is opened, the limit component is passively released from the limit of the shuttle car.

[0007] Preferably, the limiting assembly includes a limiting rod slidably arranged on the support rail, and inclined surfaces are provided at both ends of the limiting rod, and the inclined surfaces are adapted to the wheels of the shuttle.

[0008] Preferably, a plurality of first springs are provided between the limiting rod and the support rail, and two ends of the first springs are fixedly connected to the limiting rod and the support rail respectively.

[0009] Preferably, a sliding rod is fixedly provided on the support rail, a plurality of abutment blocks are fixedly provided on the sliding rod, a plurality of U-shaped grooves are provided on the limiting rod, the plurality of abutment blocks correspond one-to-one to the plurality of U-shaped grooves, and the abutment blocks are slidably provided in the U-shaped grooves and abut against the middle position of the U-shaped grooves.

[0010] Preferably, a plurality of second springs are provided between the sliding rod and the support rail, and two ends of the second springs are fixedly connected to the sliding rod and the support rail respectively.

[0011] Preferably, both ends of the sliding rod are arranged as inclined surfaces, and the inclined surfaces abut against the compensation rail.

[0012] Preferably, a screw is rotatably provided on the lifting frame, and the screw is threadedly connected to the compensation rail.

[0013] Preferably, a second pulley is fixedly provided on the screw rod, a second motor is fixedly provided on the lifting frame, a first pulley is fixedly provided on the output shaft of the second motor, and a belt is provided for transmission between the two second pulleys and the first pulley on the same side.

[0014] Preferably, a rack is fixedly provided on the support frame, a first motor is fixedly provided on the lifting frame, a gear is fixedly provided on the output shaft of the first motor, and the gear is meshed with the rack for transmission; The lifting frame is provided with a guide wheel for rotation, and the guide wheel is in abutment with the support frame; And the rack, the first motor, the gear and the guide wheel are all provided in four groups.

[0015] Preferably, a sprocket group is provided on the support frame, a counterweight module is slidably provided on the support frame, four chains are fixedly provided between the counterweight module and the lifting frame, and both ends of the chain are fixedly connected to the lifting frame and the counterweight module respectively, and pass around the sprocket group.

[0016] In the above technical solution, the present invention provides a four-way shuttle vehicle floor-changing lifting device with the following beneficial effects: By arranging a compensating rail that can be rotated and raised on the lifting frame, the compensating rail is opened when the shuttle enters or exits the lifting frame, and the two ends of the compensating rail are respectively adapted to the supporting rail and the running track of the shuttle, so that the shuttle can stably enter or exit the lifting frame. When the lifting frame is raised or lowered, the compensating rail is retracted to avoid collision with the supporting frame and components on the supporting frame, thereby ensuring the safety of the lifting frame during the lifting process.

[0017] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0018] This application document provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 A schematic diagram of the overall structure of the support frame provided in an embodiment of the present invention; Figure 2 A schematic diagram of the top structure of the support frame provided in an embodiment of the present invention; Figure 3 A schematic diagram of the lifting frame structure provided by an embodiment of the present invention; Figure 4 A schematic diagram of the structure of the state of the compensation rail provided by an embodiment of the present invention when it is retracted; Figure 5 A side cross-sectional view of a support rail provided in an embodiment of the present invention; Figure 6 A schematic diagram of the support rail, limit rod and sliding rod structure provided in an embodiment of the present invention; Figure 7 A schematic diagram of the structure of the fixed tube and the compensating rail provided in an embodiment of the present invention; Figure 8 A side cross-sectional view of a fixed tube provided in an embodiment of the present invention; Figure 9 A schematic diagram of the internal structure of a fixed tube provided in an embodiment of the present invention.

[0021] Description of reference numerals: 1. Support frame; 11. Rack; 12. Sprocket assembly; 13. Counterweight module; 14. Chain; 2. Lifting frame; 21. First motor; 22. Gear; 23. Guide wheel; 24. Second motor; 25. First pulley; 3. Support rail; 31. Limit rod; 32. First spring; 33. U-shaped groove; 4. Sliding rod; 41. Abutment block; 42. Second spring; 5. Fixed tube; 51. Horizontal part; 52. Vertical part; 6. Compensating rail; 61. Bump; 7. Screw; 71. Second pulley; 72. Belt. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0023] Please refer to 1-9, a four-way shuttle bus floor-changing lifting device includes a support frame 1 and a lifting frame 2. Two support rails 3 are fixedly provided on the lifting frame 2. Both ends of the two support rails 3 are provided with compensation rails 6. The ends of the compensation rails 6 are respectively adapted to the support rails 3 and the travel track of the shuttle bus; a fixed tube 5 corresponding to the compensation rail 6 is fixedly provided on the lifting frame 2. The fixed tube 5 is slidably and rotatably connected to the compensation rail 6. A protrusion 61 is fixedly provided on the compensation rail 6. The fixed tube 5 is provided with a guide groove. The protrusion 61 is slidably provided in the guide groove; the guide groove includes The horizontal portion 51 and the vertical portion 52 also include a limit assembly. When the lifting frame 2 is being lifted, the limit assembly limits the shuttle vehicle. When the compensation rail 6 on one side of the lifting frame 2 is opened, the limit assembly is passively released from the limit of the shuttle vehicle. When the lifting frame 2 is being lifted, the compensation rail 6 is parallel to the long side of the lifting frame 2. The protrusion 61 is located at one end of the horizontal portion 51. The compensation rail 6 is in a retracted state, which reduces the occupied space and prevents the lifting frame 2 from colliding with the support frame 1 and the components on the support frame 1 during the lifting process. 2, the compensating rail 6 rotates to be perpendicular to the long side of the lifting frame 2. During this process, the protrusion 61 moves from one end of the horizontal portion 51 to the connection between the horizontal portion 51 and the vertical portion 52. Subsequently, the compensating rail 6 moves upward so that its two ends are aligned with the supporting rail 3 and the shuttle's travel track respectively to allow the shuttle to pass through. During the upward movement of the compensating rail 6, the protrusion 61 slides along the vertical portion 52; the process in which the compensating rail 6 is aligned with the supporting rail 3 and the shuttle's travel track after rotating and rising is the opening of the compensating rail 6. The compensating rail 6 is reset after it moves down and rotates. The process is the folding of the compensation rail 6. When the compensation rail 6 is opened, the limit assembly contacts the limit of the shuttle car, which facilitates the movement of the shuttle car. When the compensation rail 6 is in the folded state, the limit assembly limits the shuttle car on the support rail 3, and improves the stability of the shuttle car during the lifting process of the lifting frame 2; through the cooperation of the protrusion 61 and the horizontal part 51 and the vertical part 52 of the guide groove, the compensation rail 6 is rotated first and then moved up when opened, ensuring the alignment of the compensation rail 6 with the support rail 3 and the running track of the shuttle car, and improving the stability of the shuttle car when passing through the compensation rail 6.

[0024] Specifically, the limiting assembly includes a limiting rod 31 slidably arranged on the support rail 3, with inclined surfaces at both ends of the limiting rod 31, and the inclined surfaces are adapted to the wheels of the shuttle car, and a plurality of first springs 32 are arranged between the limiting rod 31 and the support rail 3, and the two ends of the first spring 32 are fixedly connected to the limiting rod 31 and the support rail 3 respectively. When the shuttle car drives onto the lifting frame 2, the wheels exert pressure on the inclined surfaces of the limiting rod 31, causing the limiting rod 31 to move downward and compress the first spring 32. After the shuttle car passes the limiting rod 31, the two wheels of the shuttle car are respectively located on both sides of the limiting rod 31. Under the action of the first spring 32, the limiting rod 31 moves up and resets, as shown in the attached figure. Figure 5 shown.

[0025] When the abutment block 41 slides to the middle position of the U-shaped groove 33 and does not abut against the middle position of the U-shaped groove 33, the limiting rod 31 can move downward under the pressure of the shuttle to facilitate the travel of the shuttle on the support rail 3.

[0026] Furthermore, a plurality of second springs 42 are provided between the sliding rod 4 and the supporting rail 3. The two ends of the second spring 42 are fixedly connected to the sliding rod 4 and the supporting rail 3 respectively. When the abutting block 41 abuts and cooperates with the middle position of the U-shaped groove 33, the second spring 42 is in a normal state, and the limit rod 31 cannot move downward. When the sliding rod 4 slides and the abutting block 41 disengages from the middle position of the U-shaped groove 33, the second spring 42 is stressed and the limit rod 31 can move downward. After the shuttle moves onto the lifting frame 2, the limit rod 31 is reset under the action of the first spring 32, and the sliding rod 4 is reset under the action of the second spring 42, and the abutting block 41 abuts against the middle of the U-shaped groove 33, so that the limit rod 31 cannot move downward. The two wheels can be limited by the limit rod 31 to ensure the stability of the shuttle.

[0027] When the compensating rail 6 is retracted, the compensating rail 6 is disengaged from the sliding rod 4. Under the action of the second spring 42, the sliding rod 4 and the abutment block 41 are reset, and the abutment block 41 abuts against the middle of the U-shaped groove 33, so that the limit rod 31 cannot move downward; it should be noted that by providing the U-shaped groove 33, the compensating rails 6 on both sides of the lifting frame 2, no matter which side is opened, as long as the sliding rod 4 slides and the abutment block 41 is disengaged from the middle position of the U-shaped groove 33, the limit rod 31 can be moved downward under the pressure of the shuttle wheel.

[0028] In an embodiment further provided by the present invention, a screw rod 7 is rotatably provided on the lifting frame 2, and the screw rod 7 is threadedly connected to the compensation rail 6. When the compensation rail 6 is opened, the screw rod 7 drives the compensation rail 6 to rotate, and the protrusion 61 slides from one end of the horizontal portion 51 to the connection between the horizontal portion 51 and the vertical portion 52. At this time, under the limiting action of the protrusion 61, the screw rod 7 continues to rotate to move the compensation rail 6 upward. Conversely, when the compensation rail 6 is retracted, the screw rod 7 rotates in the opposite direction, causing the compensation rail 6 to move downward first and then rotate to complete the retraction of the compensation rail 6.

[0029] In the embodiment provided by the present invention, a second pulley 71 is fixedly provided on the screw 7, a second motor 24 is fixedly provided on the lifting frame 2, a first pulley 25 is fixedly provided on the output shaft of the second motor 24, and a belt 72 is provided for transmission between the two second pulleys 71 on the same side and the first pulley 25. The second motor 24 drives the first pulley 25 through the transmission of the belt 72 and the second pulley 71, so that the screw 7 rotates, thereby completing the opening and retracting of the compensation rail 6.

[0030] Specifically, a rack 11 is fixedly provided on the support frame 1, a first motor 21 is fixedly provided on the lifting frame 2, a gear 22 is fixedly provided on the output shaft of the first motor 21, and the gear 22 is engaged with the rack 11 for transmission; a guide wheel 23 is rotatably provided on the lifting frame 2, and the guide wheel 23 is in abutment with the support frame 1; and four groups of the rack 11, the first motor 21, the gear 22 and the guide wheel 23 are provided. By providing four guide wheels 23, they are tensioned along the output shaft direction of the first motor 21, thereby limiting the possible displacement of the lifting frame 2 in the longitudinal direction and improving the stability of the lifting frame 2 during the lifting process. The four first motors 21 simultaneously drive the gear 22, and through cooperation with the rack 11, the lifting and lowering of the lifting frame 2 are completed.

[0031] In the solution further provided by the present invention, a sprocket group 12 is provided on the support frame 1, and a counterweight module 13 is slidably provided on the support frame 1. Four chains 14 are fixedly provided between the counterweight module 13 and the lifting frame 2. The two ends of the chain 14 are respectively fixedly connected to the lifting frame 2 and the counterweight module 13, and bypass the sprocket group 12. By setting the counterweight module 13 and the cooperation between the chain 14 and the sprocket group 12, the pressure on the first motor 21 of the lifting frame 2 during the lifting process is reduced, and the counterweight module 13 can adjust the weight according to the actual application scenario. This is the existing technology.

[0032] Working principle: When the shuttle enters or exits the lifting frame 2, the second motor 24 on the corresponding side of the entry or exit is started, and the first pulley 25, belt 72 and second pulley 71 are rotated. When the second pulley 71 drives the screw 7 to rotate, the protrusion 61 slides from one end of the horizontal part 51 to the connection between the horizontal part 51 and the vertical part 52. In this process, the screw 7 drives the compensation rail 6 to rotate, so that it rotates from a state perpendicular to the support rail 3 to a state parallel to the support rail 3. Subsequently, because the protrusion 61 is located at the connection between the horizontal part 51 and the vertical part 52, the screw 7 continues to rotate, and the rotation of the compensation rail 6 is restricted. Under the action of the protrusion 61 and the vertical part 52, the compensation rail 6 rises. In this process, the protrusion 61 slides in the vertical part 52. After rising, the compensation rail 6 abuts against the inclined surface of the sliding rod 4 and pushes the sliding rod 4 to slide through the inclined surface, causing the abutment block 41 on the sliding rod 4 to slide to one side of the U-shaped groove 33. At this time, the abutment block 41 is not in contact with the U-shaped groove 3 3, that is, the abutment block 41 does not limit the limit rod 31. At this time, the compensation rail 6 also rises to the end to be aligned with the support rail 3 and the shuttle car's travel track respectively. At this time, the shuttle car moves to the lifting frame 2. During the movement, when passing the limit rod 31, the inclined surface of the limit rod 31 exerts pressure on the limit rod 31, causing the limit rod 31 to move downward, causing the first spring 32 to be compressed. After the shuttle car passes the limit rod 31, that is, the wheels of the shuttle car are respectively at After the two sides of the limit rod 31 are moved, the limit rod 31 loses pressure and is reset under the action of the first spring 32. Subsequently, the second motor 24 rotates in the opposite direction, causing the compensation rail 6 to slide downward and rotate and retract. When the compensation rail 6 is disengaged from the sliding rod 4, the sliding rod 4 slides and resets under the action of the second spring 42, causing the abutment block 41 on the sliding rod 4 to slide to the middle position of the U-shaped groove 33, limiting the downward movement of the limit rod 31, thereby improving the stability of the shuttle car during the lifting process of the lifting frame 2.

[0033] When the lifting frame 2 is lifted or lowered, the four first motors 21 are started simultaneously, and the lifting frame 2 is lifted or lowered through the meshing transmission of the gear 22 and the rack 11 .

[0034] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A floor-changing lifting device for a four-way shuttle vehicle, comprising a support frame (1) and a lifting frame (2), characterized in that: Two support rails (3) are fixedly provided on the lifting frame (2), and both ends of the two support rails (3) are provided with compensation rails (6), and the two ends of the compensation rails (6) are respectively adapted to the support rails (3) and the travel track of the shuttle vehicle; A fixed tube (5) corresponding to the compensation rail (6) is fixedly provided on the lifting frame (2), the fixed tube (5) is slidably and rotatably connected to the compensation rail (6), a protrusion (61) is fixedly provided on the compensation rail (6), the fixed tube (5) is provided with a guide groove, and the protrusion (61) is slidably provided in the guide groove; The guide groove comprises a transverse portion (51) and a vertical portion (52); It also includes a limiting component. When the lifting frame (2) is being lifted, the limiting component limits the shuttle car. When the compensation rail (6) on one side of the lifting frame (2) is opened, the limiting component is passively released from limiting the shuttle car.

2. The four-way shuttle vehicle floor-changing lifting device according to claim 1, characterized in that: The limiting assembly comprises a limiting rod (31) slidably arranged on the support rail (3), and inclined surfaces are arranged at both ends of the limiting rod (31), and the inclined surfaces are adapted to the wheels of the shuttle vehicle.

3. The four-way shuttle vehicle floor-changing lifting device according to claim 2, characterized in that: A plurality of first springs (32) are provided between the limiting rod (31) and the support rail (3), and two ends of the first springs (32) are fixedly connected to the limiting rod (31) and the support rail (3), respectively.

4. The layer-changing lifting device for a four-way shuttle vehicle according to claim 2, characterized in that: A sliding rod (4) is fixedly provided on the support rail (3), a plurality of abutment blocks (41) are fixedly provided on the sliding rod (4), a plurality of U-shaped grooves (33) are provided on the limiting rod (31), the plurality of abutment blocks (41) correspond one-to-one to the plurality of U-shaped grooves (33), and the abutment blocks (41) are slidably provided in the U-shaped grooves (33) and abutted against the middle position of the U-shaped grooves (33).

5. The layer-changing lifting device for a four-way shuttle vehicle according to claim 4, characterized in that: A plurality of second springs (42) are provided between the sliding rod (4) and the support rail (3), and two ends of the second springs (42) are fixedly connected to the sliding rod (4) and the support rail (3), respectively.

6. The layer-changing lifting device for a four-way shuttle vehicle according to claim 4, characterized in that: Both ends of the sliding rod (4) are arranged as inclined surfaces, and are in abutment with the compensation rail (6) via the inclined surfaces.

7. The layer-changing lifting device for a four-way shuttle vehicle according to claim 1, characterized in that: A screw rod (7) is rotatably provided on the lifting frame (2), and the screw rod (7) is threadedly connected to the compensation rail (6).

8. The layer-changing lifting device for a four-way shuttle vehicle according to claim 7, characterized in that: A second pulley (71) is fixedly provided on the screw rod (7), a second motor (24) is fixedly provided on the lifting frame (2), a first pulley (25) is fixedly provided on the output shaft of the second motor (24), and a belt (72) is provided for transmission between the two second pulleys (71) and the first pulley (25) on the same side.

9. The layer-changing lifting device for a four-way shuttle vehicle according to claim 1, characterized in that: A rack (11) is fixedly provided on the support frame (1), a first motor (21) is fixedly provided on the lifting frame (2), a gear (22) is fixedly provided on the output shaft of the first motor (21), and the gear (22) is meshed with the rack (11) for transmission; A guide wheel (23) is rotatably provided on the lifting frame (2), and the guide wheel (23) is in abutment with the support frame (1); Furthermore, four groups of the rack (11), the first motor (21), the gear (22) and the guide wheel (23) are provided.

10. The layer-changing lifting device for a four-way shuttle vehicle according to claim 1, characterized in that: A sprocket group (12) is provided on the support frame (1), a counterweight module (13) is slidably provided on the support frame (1), four chains (14) are fixedly provided between the counterweight module (13) and the lifting frame (2), and two ends of the chain (14) are respectively fixedly connected to the lifting frame (2) and the counterweight module (13), and pass around the sprocket group (12).

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