Lifting structure of four-direction walking shuttle vehicle

Abstract

The utility model relates to a lifting structure of a four-direction walking shuttle vehicle, which comprises a lifting motor arranged in a shuttle vehicle main body; the number of the lifting assemblies is two, and the two lifting assemblies are symmetrically arranged at one set of opposite side ends of the shuttle vehicle body. Each lifting assembly comprises a lifting cross beam, a cam crankshaft and a bearing, the lifting cross beams are arranged on the shuttle vehicle body in a liftable mode, movable holes are formed in the lifting cross beams, the bearings are arranged in the movable holes, one ends of the cam crankshafts are in transmission connection with the lifting motors, and connecting rods are arranged at the other ends of the cam crankshafts. And the connecting rod penetrates through the bearing. According to the lifting device, the lifting effect is obvious, the structure is simple, the manufacturing cost is low, and operation is easy.

Description

Technical Field

[0001] The present application relates to the technical field of four-way shuttle vehicles, and in particular to a lifting structure of a four-way walking shuttle vehicle. Background Art

[0002] The lifting mechanism is the most complex and requires the highest precision in the four-way shuttle structure. It not only allows the shuttle to switch track directions, but also drives the cargo plate (2001) to pick up and place cargo.

[0003] In the prior art, two main structural approaches are used to achieve this. One is a rack-and-pinion structure, where the rack is fixed to the shuttle body and the gear is fixed to the lifting structure. The gear rolls on the rack to achieve the vertical movement of the lifting structure. The other is a cam-and-link structure, which uses a vertically arranged cam-and-link to achieve the vertical movement of the lifting structure.

[0004] Because the shuttle's lifting mechanism needs to bear a large load and ensure uniform load distribution, both of the above methods can only guarantee smooth operation if the mechanism has high precision. This leads to high manufacturing costs and complex installation. Summary of the Invention

[0005] The present application provides a lifting structure for a four-way traveling shuttle vehicle, which can solve the technical problems of high manufacturing cost and complex installation of the lifting structure of the four-way traveling shuttle vehicle in the prior art.

[0006] First, embodiments of the present application provide a lifting structure for a four-way traveling shuttle, comprising a lifting motor and a lifting assembly. The lifting motor is disposed within the shuttle body; two lifting assemblies are provided, symmetrically disposed on opposite sides of the shuttle body; each lifting assembly comprises a lifting beam, a cam crankshaft, and a bearing. The lifting beam is liftable and disposed within the shuttle body, and has a movable hole defined therein, within which the bearing is disposed. One end of the cam crankshaft is in transmission connection with the lifting motor, and the other end is provided with a connecting rod, which extends through the bearing.

[0007] In one embodiment, each lifting assembly further comprises a fixed frame, wherein the fixed frame is mounted on a side end of the shuttle body, and the lifting beam is disposed inside the fixed frame and can be lifted vertically to the outside of the fixed frame.

[0008] In one embodiment, lifting guide shafts are provided at both ends of the inner side of the fixed frame, through holes for accommodating the lifting guide shafts are opened at both ends of the lifting beam, and the inner walls of the through holes are covered with lifting sliding films.

[0009] In one embodiment, the lifting guide shaft is mounted on the fixed frame via a lifting guide shaft upper mounting plate and a lifting guide shaft lower mounting plate.

[0010] In one embodiment, driving wheels are respectively provided near both ends of the bottom surface of the lifting beam. When the lifting beam descends to the lowest position, the shuttle body is displaced along the rotation direction of the driving wheels.

[0011] In one embodiment, a plurality of cargo plates are further included, wherein the plurality of cargo plates are located on the top surface of the shuttle body, and both ends of the cargo plates are respectively placed on a set of fixed frames at opposite side ends of the shuttle body.

[0012] In one embodiment, during the lifting process, when the top surface height of the lifting beam is greater than or equal to the top surface height of the fixed frame, the cargo plate contacts the lifting beam and rises synchronously with the lifting beam; during the lowering process, when the top surface height of the lifting beam is lower than the top surface height of the fixed frame, the cargo plate does not contact the lifting beam.

[0013] In one embodiment, a top surface of the fixed frame is provided with a card slot, and both ends of the cargo plate are placed in the card slot.

[0014] In one embodiment, a plurality of cargo plate guide shafts are symmetrically provided on the bottom surfaces of both ends of the cargo plate, and the lifting beam is provided with guide holes corresponding to the positions of the plurality of cargo plate guide shafts.

[0015] In one embodiment, a cargo bed bushing is provided on the contact surface between the lifting beam and the cargo bed.

[0016] The beneficial effects of the technical solutions provided in the embodiments of the present application include:

[0017] In this application, the cam crankshaft is driven by the lifting motor, so that the connecting rod and the bearing transmit force in the movable hole, driving the lifting beam to lift or lower along the side end of the shuttle body. This not only has an obvious lifting effect, but also has a simple structure, low manufacturing cost and easy operation, solving the technical problems of high manufacturing cost and complex installation of the lifting structure of the four-way walking shuttle in the related technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1This is a schematic diagram of the installation of the lifting structure and the shuttle body in an embodiment of the present application;

[0020] Figure 2 for Figure 1 Schematic diagram of the installation of the middle cam crankshaft and the shuttle body;

[0021] Figure 3 for Figure 1 A side sectional view of

[0022] Figure 4 for Figure 3 Schematic diagram of the lifting beam in the highest position;

[0023] Figure 5 for Figure 3 Schematic diagram of the installation of the lifting crossbeam, lifting sliding membrane and lifting guide shaft on the lifting crossbeam;

[0024] Figure 6 for Figure 3 Schematic diagram of the lifting beam in its lowest position;

[0025] Figure 7 for Figure 1 Schematic diagram of the installation of the middle cargo board and cargo board guide shaft;

[0026] Figure 8 for Figure 1 Schematic diagram of the lifting beam in the middle and an enlarged part of the lifting beam.

[0027] In the picture:

[0028] 1. Shuttle vehicle body;

[0029] 2. Lifting motor;

[0030] 3. Lifting assembly; 31. Lifting beam; 311. Movable hole; 312. Through hole; 313. Lifting sliding membrane; 314. Driving wheel; 315. Guide hole; 32. Cam crankshaft; 321. Connecting rod; 33. Bearing; 34. Fixed frame; 341. Lifting guide shaft; 342. Lifting guide shaft lower mounting plate; 343. Lifting guide shaft lower mounting plate; 344. Slot;

[0031] 4. Cargo board; 41. Cargo board guide shaft; 42. Cargo board bushing. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0033] The embodiment of the present application provides a lifting structure for a four-way traveling shuttle vehicle, which can solve the technical problems of high manufacturing cost and complex installation of the lifting structure of a four-way traveling shuttle vehicle in the prior art.

[0034] Reference Figure 1 , is a schematic diagram of the installation of the lifting structure and the shuttle body 1 in the embodiment of the present application. Figure 1 As shown, in one embodiment, the lifting structure of the four-way walking shuttle of the present application is entirely arranged on the shuttle body 1, and the lifting structure includes a lifting motor 2 and a lifting assembly 3. Among them, the lifting motor 2 is mainly arranged inside the shuttle body 1. Generally speaking, according to the size and weight of the lifting motor 2, a suitable bracket type (such as a steel plate bracket, a cast aluminum bracket, etc.) can be selected, and the lifting motor 2 can be installed inside the shuttle body 1 through the bracket. There are two sets of lifting assemblies 3, and the two sets of lifting assemblies 3 are symmetrically arranged on a set of opposite side ends of the shuttle body 1, and the lifting motor 2 and the lifting assembly 3 are connected by transmission. In this embodiment, by connecting the lifting motor 2 and the lifting assembly 3 by transmission, after the lifting motor 2 is started, the two sets of lifting assemblies 3 on a set of opposite side ends of the shuttle body 1 can be driven to move up and down simultaneously along the vertical direction of the side ends of the shuttle body 1, thereby achieving a synchronous lifting effect, thereby successfully completing the task of picking up and placing the material box (Note: In this embodiment, the shuttle is mainly used to transport and pick up and place material boxes on the shelf).

[0035] Preferably, refer to Figures 1 to 3 , Figure 2 for Figure 1 Schematic diagram of the installation of the middle cam crankshaft 32 and the shuttle body 1, Figure 3 for Figure 1 A side sectional view of Figures 1 to 3 As shown, each lifting assembly 3 includes a lifting beam 31, a cam crankshaft 32 and a bearing 33. The lifting beam 31 can be raised and lowered on the shuttle body 1. A movable hole 311 is opened on the lifting beam 31, and a bearing 33 is arranged in the movable hole 311. One end of the cam crankshaft 32 is transmission-connected to the lifting motor 2, and the other end of the cam crankshaft 32 is provided with a connecting rod 321, and the connecting rod 321 passes through the bearing 33.

[0036] The lifting beam 31 is lifted and lowered in a vertical direction. The movable hole 311 is formed in the "belly" of the lifting beam 31 and is elliptical in shape. The number of movable holes 311 is consistent with the number of cam crankshafts 32. If each lifting assembly 3 is provided with only one movable hole 311 and one cam crankshaft 32, the movable hole 311 is located at the center of the "belly" of the lifting beam 31, and the cam crankshaft 32 is directly connected to the rotor of the lifting motor 2. If each lifting assembly 3 is provided with multiple movable holes 311 and multiple cam crankshafts 32, the movable holes 311 are evenly distributed in the "belly" of the lifting beam 31, and the cam crankshaft 32 is indirectly connected to the rotor of the lifting motor 2 via a synchronization mechanism. For example, two cam crankshafts 32 are symmetrically provided about the center of the lifting beam 31 and meshed with the rotor of the lifting motor 2 via multiple gears, thereby achieving the effect of synchronous lifting and lowering of the two cam crankshafts 32. The cam crankshaft 32 is elliptical in shape, and the bearing 33 is generally preferably a needle roller bearing 33 .

[0037] In this embodiment, by disposing the lifting motor 2 inside the shuttle body 1, the overall structure of the shuttle is made more compact, while also preventing external interference and protecting the lifting motor 2 from dust. By symmetrically disposing two sets of lifting assemblies 3 on opposite sides of the shuttle body 1, it is possible to ensure balanced forces during the lifting process, preventing the material box from tilting. This can reduce the risk of shaking and tilting, especially when lifting heavy objects, and improve operational safety. By providing a movable hole 311 on the lifting beam 31 and placing a bearing 33 in the movable hole 311, one end of the cam crankshaft 32 is connected to the lifting motor 2 in a transmission manner, and the other end of the cam crankshaft 32 is provided with a connecting rod 321, which extends through the bearing 33. In this way, during the lifting process, it can be ensured that the bearing 33 moves appropriately in the movable hole 311 to prevent the lifting beam 31 from swinging along with the connecting rod 321 of the cam crankshaft 32, thereby ensuring that when the lifting motor 2 drives the cam crankshaft 32, the connecting rod 321 of the cam crankshaft 32 can drive the bearing 33 to move the lifting beam 31 up and down, thereby achieving a good lifting effect. Such a structure is not only simple but also easy to operate.

[0038] Further, in some embodiments, referring to Figure 1 and Figure 4 , Figure 4 for Figure 3 The schematic diagram of the lifting beam 31 in the highest position is as shown in FIG. Figure 1 and Figure 4As shown, each lifting assembly 3 further includes a fixed frame 34, which is mounted on the side end of the shuttle body 1. The lifting beam 31 is disposed inside the fixed frame 34 and can be lifted vertically to the outside of the fixed frame 34. In this embodiment, each lifting assembly 3 further includes a fixed frame 34. The purpose of providing the fixed frame 34 is to mount the lifting beam 31 on the shuttle body 1. Therefore, the fixed frame 34 is also mounted on the side end of the shuttle body 1 (the side end position is consistent with the side end position of the lifting beam 31). By arranging the lifting beam 31 inside the fixed frame 34 and being able to be lifted vertically to the outside of the fixed frame 34, when the lifting beam 31 is lifted upward to the outside of the fixed frame 34, the material box can be lifted; when the lifting beam 31 is lowered vertically downward to the inside of the fixed frame 34, the material box can be lowered.

[0039] Further, in some embodiments, referring to Figure 5 ,for Figure 3 Schematic diagram of the installation of the lifting beam 31 and the lifting sliding film 313 and the lifting guide shaft 341 on the lifting beam 31, as shown in FIG. Figure 5 As shown, lifting guide shafts 341 are provided at both ends of the inner side of the fixed frame 34 , and through holes 312 for accommodating the lifting guide shafts 341 are opened at both ends of the lifting beam 31 , and the inner walls of the through holes 312 are covered with lifting sliding films 313 . The cam 312 is a substantially parallel plate 314 which is formed on the underside of the support rail 31 and is adapted to move the cam 312 upwards to allow the support rail 312 to move relative to the support rail 31. The cam 312 is a substantially parallel plate 314 which is adapted to move the cam 312 downwards to allow the support rail 312 to move relative to the support rail 31.

[0040] Furthermore, in some embodiments, Figure 3 As shown, the lifting guide shaft 341 is mounted on the fixed frame 34 via the lifting guide shaft upper mounting plate 342 and the lifting guide shaft lower mounting plate 343. In this embodiment, the lifting guide shaft 341 can be firmly mounted on the fixed frame 34 via the lifting guide shaft upper mounting plate 342 and the lifting guide shaft lower mounting plate 343, forming a stable support structure that can effectively resist external loads and vibrations, ensuring stability during the lifting process.

[0041] Furthermore, in one embodiment, referring to Figure 6 ,for Figure 3 The schematic diagram of the lifting beam 31 in the lowest position is as shown in FIG. Figure 6 As shown, the bottom surface of the lifting beam 31 is provided with drive wheels 314 near both ends. When the lifting beam 31 is lowered to the lowest position, the shuttle body 1 is displaced along the rotation direction of the drive wheels 314. In this embodiment, by providing the drive wheels 314 near both ends of the bottom surface of the lifting beam 31, when the lifting beam 31 is lowered to the lowest position, the drive wheels 314 contact the roadway (or the guide rail for the shuttle). At this time, the weight of the entire shuttle body 1 is concentrated on the drive wheels 314, and the shuttle body 1 can be displaced along the rotation direction of the drive wheels 314, which facilitates the shuttle body 1 to change direction.

[0042] Furthermore, in one embodiment, if Figure 1 As shown, the lifting structure also includes a plurality of cargo plates 4, which are located on the top surface of the shuttle body 1, and the ends of the cargo plates 4 are respectively placed on a set of fixed frames 34 at opposite side ends of the shuttle body 1. In this embodiment, the purpose of installing the lifting assembly 3 on the shuttle body 1 is to be able to lift the container. Furthermore, by placing the cargo plates 4 on the top surface of the shuttle body 1 and placing the two sides of the cargo plates 4 on the shuttle body, the stability of the container can be better ensured during both lifting and lowering.

[0043] Furthermore, in one embodiment, if Figure 3 、 Figure 4 and Figure 6As shown, during the lifting process, when the top surface height of the lifting beam 31 is greater than or equal to the top surface height of the fixed frame 34, the cargo plate 4 contacts the lifting beam 31 and rises synchronously with the lifting beam 31; during the lowering process, when the top surface height of the lifting beam 31 is lower than the top surface height of the fixed frame 34, the cargo plate 4 does not contact the lifting beam 31. In this embodiment, as can be seen from the previous embodiment, the cargo plate 4 is simply placed on the top surface of the fixed frame 34. During the lifting process of the lifting beam 31, once the top surface height of the lifting beam 31 is greater than or equal to the top surface height of the fixed frame 34 (that is, the lifting beam 31 is lifted to the outside of the fixed frame 34), the cargo plate 4 can be lifted up. At this time, the cargo plate 4 contacts the lifting beam 31 and rises synchronously with the lifting beam 31, which can ensure that the material box is smoothly taken out. During the descent of the lifting beam 31, once the top surface of the lifting beam 31 is lower than the top surface of the fixed frame 34 (i.e., the lifting beam 31 has descended into the fixed frame 34), the cargo platform 4 will no longer be lifted by the lifting beam 31. At this point, the cargo platform 4 is no longer in contact with the lifting beam 31. It should be noted that during the descent of the lifting beam 31, the lifting beam 31 is driven by the cam crankshaft 32 to descend into the fixed frame 34, while the cargo platform 4 is slowly lowered by its own weight (including the weight of the container, if any).

[0044] Furthermore, in one embodiment, if Figure 3 As shown, the top surface of the fixed frame 34 is provided with a slot 344, and the two ends of the cargo plate 4 are placed in the slot 344. In this embodiment, by providing the slot 344 on the top surface of the fixed frame 34 and placing the two ends of the cargo plate 4 in the slot 344, it can ensure that the cargo plate 4 can be placed stably on the fixed frame 34, preventing the shuttle from shaking or tilting during the process of transporting or storing the material box, thereby ensuring the stability and safety of the goods.

[0045] Furthermore, in one embodiment, referring to Figure 7 and Figure 8 , Figure 7 for Figure 1 Schematic diagram of the installation of the middle cargo plate 4 and the cargo plate guide shaft 41, Figure 8 for Figure 1 The lifting beam 31 and the partially enlarged schematic diagram of the lifting beam 31 are as follows: Figure 7 and Figure 8 As shown, a plurality of cargo plate guide shafts 41 are symmetrically disposed on the bottom surfaces of both ends of the cargo plate 4, and guide holes 315 corresponding to the positions of the guide shafts are provided on the lifting beam 31. In this embodiment, by symmetrically disposing a plurality of cargo plate guide shafts 41 on the bottom surfaces of both ends of the cargo plate 4 and providing guide holes 315 corresponding to the positions of the guide shafts on the lifting beam 31, the cargo plate 4 can be ensured to move smoothly in the vertical direction, thereby reducing the shaking of the material box and improving reliability.

[0046] Furthermore, in one embodiment, if Figure 8 As shown, the contact surface between the lifting beam 31 and the cargo platform 4 is provided with a cargo platform bushing 42. In this embodiment, the provision of the cargo platform bushing 42 on the contact surface between the lifting beam 31 and the cargo platform 4 effectively reduces direct contact between the lifting beam 31 and the cargo platform 4, thereby reducing the coefficient of friction. Furthermore, the cargo platform bushing 42 generally has good lubrication and wear resistance, making the lifting process smoother and more efficient.

[0047] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application 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 cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0048] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprising a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0049] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A lifting structure for a four-way walking shuttle, characterized in that: include: A lifting motor (2) is arranged inside the shuttle body (1); The lifting assembly (3) is provided with two groups, and the two groups of lifting assemblies (3) are symmetrically arranged on one opposite side end of the shuttle body (1); each group of lifting assemblies (3) includes a lifting beam (31), a cam crankshaft (32) and a bearing (33); the lifting beam (31) can be lifted and lowered on the shuttle body (1); the lifting beam (31) is provided with a movable hole (311), and the bearing (33) is provided in the movable hole (311); one end of the cam crankshaft (32) is connected to the lifting motor (2) in a transmission manner, and the other end is provided with a connecting rod (321), and the connecting rod (321) passes through the bearing (33).

2. The lifting structure of the four-way walking shuttle according to claim 1 is characterized in that: Each lifting assembly (3) further includes a fixed frame (34), which is mounted on the side end of the shuttle body (1); the lifting beam (31) is arranged inside the fixed frame (34) and can be lifted vertically to the outside of the fixed frame (34).

3. The lifting structure of the four-way walking shuttle according to claim 2 is characterized in that: Both ends of the inner side of the fixed frame (34) are provided with lifting guide shafts (341), and both ends of the lifting beam (31) are provided with through holes (312) for accommodating the lifting guide shafts (341), and the inner walls of the through holes (312) are covered with lifting sliding films (313).

4. The lifting structure of the four-way walking shuttle according to claim 3 is characterized in that: The lifting guide shaft (341) is mounted on the fixed frame (34) via a lifting guide shaft upper mounting plate (342) and a lifting guide shaft lower mounting plate (343).

5. The lifting structure of the four-way walking shuttle as claimed in claim 2, characterized in that: The bottom surface of the lifting beam (31) is provided with driving wheels (314) near both ends. When the lifting beam (31) drops downward to the lowest position, the shuttle body (1) moves along the rotation direction of the driving wheels (314).

6. The lifting structure of the four-way shuttle vehicle according to claim 2, characterized in that: It also includes a plurality of cargo plates (4), which are located on the top surface of the shuttle body (1), and the two ends of the cargo plates (4) are respectively placed on a set of fixed frames (34) at opposite side ends of the shuttle body (1).

7. The lifting structure of the four-way shuttle vehicle according to claim 6, characterized in that: During the lifting process, when the top surface height of the lifting beam (31) is greater than or equal to the top surface height of the fixed frame (34), the cargo plate (4) contacts the lifting beam (31) and rises synchronously with the lifting beam (31); During the descending process, when the top surface height of the lifting beam (31) is lower than the top surface height of the fixed frame (34), the cargo plate (4) does not contact the lifting beam (31).

8. The lifting structure of the four-way shuttle vehicle according to claim 6, characterized in that: The top surface of the fixed frame (34) is provided with a card slot (344), and both ends of the cargo plate (4) are placed in the card slot (344).

9. The lifting structure of the four-way shuttle vehicle according to claim 6, characterized in that: A plurality of cargo plate guide shafts (41) are symmetrically arranged on the bottom surfaces of both ends of the cargo plate (4), and the lifting beam (31) is provided with guide holes (315) corresponding to the positions of the plurality of cargo plate guide shafts (41).

10. The lifting structure of the four-way shuttle vehicle according to claim 6, characterized in that: The contact surface between the lifting beam (31) and the cargo plate (4) is provided with a cargo plate bushing (42).

Images