Shuttle vehicle jacking system

Abstract

The invention belongs to the technical field of jacking systems, and particularly relates to a shuttle vehicle jacking system which comprises a jacking system installed on a vehicle body, and the jacking system comprises a jacking shaft, a jacking driving unit, a jacking gearbox assembly and a jacking cam assembly; the jacking cam assemblies are installed on the two opposite side walls of the interior of the vehicle body and extend to the outer side of the vehicle body. According to the installation mode of the jacking gear box assembly in the scheme, accurate limiting of freedom degrees in all directions is achieved (penetration of the shaft limits the translation freedom degree, and the connecting and fixing mode of the fixing support and the gear box limits the rotation freedom degree), meanwhile, the requirement for the machining precision of the jacking gear box assembly is effectively lowered through the structural scheme, and the machining precision of the jacking gear box assembly is effectively improved. And the error threshold value of production and manufacturing is improved. Rotation and fixation of the cam mechanism are achieved through the expansion sleeve, the requirement for high consistency of key groove and gear machining precision is avoided, and meanwhile gap errors caused by abrasion can be conveniently and timely adjusted on site.

Description

Technical Field

[0001] The present invention relates to the technical field of jacking systems, in particular to a shuttle vehicle jacking system. Background Art

[0002] In automated vertical warehouse shuttle applications, a jacking structure is often used to facilitate material placement and retrieval. This jacking structure not only bears the weight of the cargo / materials but, in some applications, also supports the vehicle itself. Therefore, the design of the jacking structure and its associated components determines the load capacity, stability, and core competitiveness of the entire shuttle product.

[0003] Common jacking systems on the market include hydraulic and mechanical systems. Hydraulic systems offer inherent advantages in cost-effectiveness, simple structure, and direct effectiveness. However, the design and construction of the oil circuits also require considerable attention to detail. Hydraulic system oil leaks are a common cause of vehicle jacking system failures. Mechanical jacking systems are complex and expensive. Common rack and pinion jacking systems are prone to harsh operating environments, inadequate lubrication, complex maintenance, and high overall costs. Summary of the Invention

[0004] The object of the present invention is to provide a shuttle vehicle lifting system to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: a shuttle vehicle lifting system, comprising:

[0006] a jacking system mounted on the vehicle body;

[0007] Wherein, the jacking system includes a jacking shaft, a jacking drive unit, a jacking gearbox assembly and a jacking cam assembly;

[0008] The lifting cam assembly is installed on the two opposite side walls inside the vehicle body, and the lifting cam assembly extends to the outside of the vehicle body. The lifting cam assemblies on both sides are connected by a lifting shaft, and the lifting drive unit drives the lifting shaft to rotate based on the lifting gear box assembly.

[0009] Preferably, the jacking drive unit includes a drive motor and a reducer, the output shaft of the drive motor is connected to the input end of the reducer, and the output end of the reducer is connected to the jacking gear box assembly.

[0010] Preferably, the jacking gearbox assembly includes a reduction box and a reduction box fixture bracket, the reduction box fixture bracket is connected to the side wall of the reduction box through bolts, and the reduction box fixture bracket is connected to the inner wall of the vehicle body through bolts.

[0011] Preferably, the reduction gear includes an outer box body and a driving gear and a driven gear rotatably mounted inside the outer box body, the driving gear and the driven gear are meshed with each other, the output end of the reducer is connected to the driving gear, and the lifting shaft passes through the driven gear and is keyed to the driven gear.

[0012] Preferably, the lifting cam assembly includes an outer shell and two mutually meshing drive gears connected to the outer shell, the two ends of the lifting shaft are respectively connected to a corresponding drive gear in the lifting cam assemblies on both sides, the outer sides of the two drive gears are connected to a support shaft, the outer end of the support shaft passes through the vehicle body and is connected to a cam.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The installation method of the jacking gearbox assembly in this solution realizes the accurate limitation of the degrees of freedom in all directions (the penetration of the shaft limits the translational freedom, and the connection and fixing method of the fixed bracket and the gearbox limits the rotational freedom). At the same time, this type of structural solution effectively reduces the processing accuracy requirements for the jacking gearbox assembly and improves the error threshold of production.

[0015] The rotation fixation of the cam mechanism is achieved by means of an expansion sleeve, which avoids the high consistency requirements for keyway and gear processing accuracy, and facilitates timely on-site adjustment of clearance errors caused by wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention;

[0017] Figure 2 For the present invention Figure 1 A side structural diagram of

[0018] Figure 3 It is a structural schematic diagram of the jacking system of the present invention;

[0019] Figure 4 It is a schematic diagram of the exploded structure of the jacking system of the present invention;

[0020] Figure 5 It is a schematic diagram of the exploded structure of the jacking gearbox assembly of the present invention.

[0021] In the figure: 1. Car body; 2. Lifting system; 21. Lifting shaft; 22. Lifting drive unit; 23. Lifting gearbox assembly; 231. Reducer box; 232. Reducer box fixture bracket; 24. Lifting cam assembly. DETAILED DESCRIPTION

[0022] 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 making creative efforts are within the scope of protection of the present invention.

[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0024] See also Figure 1-5 The present invention provides a shuttle vehicle lifting system.

[0025] Example 1

[0026] The present invention discloses a shuttle vehicle jacking system, which mainly includes a jacking system 2 installed on a vehicle body 1; wherein, the jacking system 2 includes a jacking shaft 21, a jacking drive unit 22, a jacking gear box assembly 23 and a jacking cam assembly 24; the jacking cam assembly 24 is installed on the inner opposite side walls of the vehicle body 1, and the jacking cam assembly 24 extends to the outside of the vehicle body 1, and the jacking cam assemblies 24 on both sides are connected by a jacking shaft 21, and the jacking drive unit 22 drives the jacking shaft 21 to rotate based on the jacking gear box assembly 23.

[0027] Solution Analysis: From an overall structural perspective, the vehicle body 1 serves as the load-bearing foundation for the entire system, providing a stable installation platform for the jacking system 2. The core components of the jacking system 2 achieve the jacking function through synergy. The jacking shaft 21 is a key component connecting the jacking cam assemblies 24 on both sides. It runs horizontally through the interior of the vehicle body 1, forming a "bridge" for force transmission and ensuring the synchronization of the cam movements on both sides. From the perspective of the force transmission path, the power output by the jacking drive unit 22 is converted by the jacking gearbox assembly 23, driving the jacking shaft 21 to rotate, thereby driving the jacking cam assemblies 24 on both sides to move. This "centralized drive + symmetrical transmission" structure can avoid the problem of unbalanced load caused by unilateral drive. From the perspective of mechanical stability, the jacking cam assemblies 24 are installed on the opposite side walls of the vehicle body 1 and extend to the outside. This position design enables the contact points between the cam and the object to be lifted to be distributed on both sides of the vehicle body 1, forming a symmetrical force structure and reducing the risk of local overload of the vehicle body 1. In addition, the rigid connection between the lifting shaft 21 and the lifting cam assemblies 24 on both sides limits the horizontal displacement of the cam assembly, ensures the stability of the cam position during the lifting process, and provides a structural basis for uniform force.

[0028] Technical effect: This structure significantly improves the overall stability of the system through symmetrical layout and rigid connection. The synchronous action of the lifting cam assemblies 24 on both sides avoids the tilting of the material during lifting, ensuring the safety of material picking and placing. The through-type design of the lifting shaft 21 enhances the integrity of the system and reduces the vibration and abnormal noise caused by the dispersion of components. At the same time, compared with the traditional distributed drive structure, the "drive unit-gearbox assembly-lifting shaft-cam assembly" transmission chain of this solution is simpler, with less force transmission loss and improved energy utilization efficiency. In addition, the design of the lifting cam assembly 24 extending to the outside of the vehicle body 1 expands the contact range with the lifted object, reduces the accuracy requirements for the material placement position, and improves the adaptability of the system.

[0029] Example 2

[0030] This solution discloses a shuttle vehicle lifting system. Based on Example 1, the lifting drive unit 22 includes a driving motor and a reducer. The output shaft of the driving motor is connected to the input end of the reducer, and the output end of the reducer is connected to the lifting gearbox assembly 23.

[0031] Solution Analysis: The drive motor serves as the power source, and its output speed and torque must be adjusted by a speed reducer to match the load requirements of the jacking system 2. From a dynamic perspective, the high speed of the drive motor provides a fast response, but directly driving the jacking gearbox assembly 23 can cause "stuck" due to insufficient torque. The speed reducer, however, achieves torque reduction through gear meshing, converting the motor's high speed and low torque into low speed and high torque, meeting the heavy load requirements of the jacking process. From a structural perspective, the rigid connection (such as a keyed or flanged connection) between the drive motor output shaft and the speed reducer input ensures seamless power transmission and reduces energy loss. The connection between the speed reducer output and the jacking gearbox assembly 23 forms a continuous "motor-speed reducer-gearbox" transmission chain, ensuring smoother power transmission. From a mechanical buffering perspective, the speed reducer reduces impact loads during start-up and shutdown of the drive motor, preventing damage to the jacking gearbox assembly 23 and jacking shaft 21 from transient overloads and extending component life.

[0032] Technical Effect: The combination of the drive motor and the reducer significantly improves the power adaptability of the system. It can not only ensure the continuity of power output through the motor, but also meet the requirements of large load lifting through the reducer. The deceleration and torque-increasing effect of the reducer reduces the power requirements of the drive motor, allowing the use of a smaller power motor and reducing system energy consumption. At the same time, the reducer's buffering effect on impact loads reduces fatigue damage to components caused by frequent starting and stopping, thereby improving system reliability. In addition, the modular design of the motor and reducer facilitates subsequent maintenance and replacement. When a component fails, it can be disassembled and repaired separately, reducing maintenance costs.

[0033] Example 3

[0034] This solution discloses a shuttle vehicle lifting system. Based on Example 2, the lifting gearbox assembly 23 includes a reduction gearbox 231 and a reduction gearbox fixture bracket 232. The reduction gearbox fixture bracket 232 is connected to the side wall of the reduction gearbox 231 by bolts, and the reduction gearbox fixture bracket 232 is connected to the inner wall of the vehicle body 1 by bolts.

[0035] Solution Analysis: The gearbox fixture bracket 232 is the intermediate component connecting the gearbox 231 and the vehicle body 1. Its structural design directly affects the fixing stability of the gearbox 231. From the perspective of the connection method, the bolt connection is detachable and high-strength. It can not only ensure the close fit between the gearbox fixture bracket 232, the gearbox 231, and the vehicle body 1, but also facilitate installation, commissioning, and subsequent maintenance. From the perspective of freedom restriction, the connection between the gearbox fixture bracket 232 and the side wall of the gearbox 231 limits the horizontal translational freedom of the gearbox 231, while its connection with the inner wall of the vehicle body 1 further limits the rotational freedom of the gearbox 231, allowing the gearbox 231 to maintain a fixed posture during power transmission and avoid positional displacement caused by vibration. From the perspective of force dispersion, the multi-point bolt connection between the bracket and the vehicle body 1 can disperse the reaction force borne by the gearbox 231 to multiple locations on the vehicle body 1, reducing the local force intensity of the vehicle body 1 and avoiding deformation of the vehicle body 1 due to long-term force.

[0036] Technical Effect: The bolted connection of the gearbox fastener bracket 232 achieves precise positioning of the gearbox 231, ensuring accurate gear meshing and improving transmission efficiency. The effective restriction of the gearbox 231's degrees of freedom prevents "wobbling" during power transmission and reduces noise and wear from gear meshing. Furthermore, the removable nature of the bolted connection reduces the difficulty of production and maintenance, enabling assembly and disassembly of components without specialized tools, improving production efficiency and ease of maintenance. Furthermore, the distributed force transmission design protects the structure of the vehicle body 1 and extends the service life of the entire shuttle.

[0037] Example 4

[0038] This solution discloses a shuttle vehicle lifting system. Based on Example 3, the reduction gear 231 includes an outer box body and a driving gear and a driven gear rotatably installed inside the outer box body. The driving gear and the driven gear are meshed with each other. The output end of the reduction gear is connected to the driving gear, and the lifting shaft 21 passes through the driven gear and is keyed to the driven gear.

[0039] Solution analysis: The outer housing of the reduction gear 231 provides a closed installation space for the internal gears, which not only protects the gears from contamination by dust and impurities, but also limits the axial displacement of the gears, ensuring meshing accuracy. The meshing transmission between the driving gear and the driven gear is the core link of power transmission. The speed and torque can be further adjusted through the design of the gear ratio, so that the power output to the lifting shaft 21 is more adapted to the movement requirements of the cam assembly. From the perspective of connection reliability, the connection between the output end of the reducer and the driving gear (such as shaft hole matching + key connection) ensures efficient power transmission without the risk of slipping; the key connection between the lifting shaft 21 and the driven gear can rigidly transmit the rotational motion of the driven gear to the lifting shaft 21, avoiding "idling" during the power transmission process. From the perspective of mechanical balance, the smoothness of the gear meshing reduces the impact of power transmission, making the rotation of the lifting shaft 21 more uniform, thereby ensuring the consistency of the movement of the cam assemblies on both sides.

[0040] Technical effect: The closed design of the outer box increases the service life of the gears and reduces wear and failures caused by contamination. The meshing transmission efficiency of the driving gear and the driven gear is high, and the power loss is small, which ensures that the energy of the drive motor can be effectively converted into mechanical energy for the jacking action. The rigid transmission characteristics of the key connection ensure the stability of the rotation of the jacking shaft 21 and avoid the asynchronous movement of the cams on both sides due to the lag in power transmission. In addition, the designability of the gear transmission (such as adjusting the gear ratio) enables the system to adapt to different loads and jacking speed requirements, which improves the versatility of the solution.

[0041] Example 5

[0042] The present invention discloses a shuttle vehicle lifting system. Based on Example 1, the lifting cam assembly 24 includes an outer shell and two mutually meshing drive gears connected to the outer shell. The two ends of the lifting shaft 21 are respectively connected to a corresponding drive gear in the lifting cam assembly 24 on both sides. The outer sides of the two drive gears are connected to a support shaft, and the outer end of the support shaft passes through the vehicle body 1 and is connected to a cam.

[0043] Solution Analysis: The outer shell of the lifting cam assembly 24 provides protection and positioning for the internal drive gear, ensuring the stability of the gear meshing. The two mutually meshing drive gears rotate in opposite directions under the drive of the lifting shaft 21. This reverse motion is transmitted to the cams through the support shaft, allowing the cams on both sides to synchronously complete the "lifting" or "lowering" action. From the perspective of mechanical symmetry, the counter-rotating cams can exert symmetrical support forces on the lifted object, avoiding the material tilting caused by unilateral force. The support shaft serves as the intermediate component connecting the drive gear and the cam. Its length design ensures that the cam extends to the appropriate position outside the vehicle body 1, making the contact points between the cam and the lifted object more evenly distributed. From a kinematic perspective, the cam profile design determines the variation curve of the lifting height and speed, while the meshing transmission of the drive gears ensures the consistency of the profile motion of the cams on both sides, improving the smoothness of the lifting process.

[0044] Technical Effect: The counter-rotation of the two drive gears synchronizes the cams, ensuring levelness during material lifting and reducing the risk of material drops. The protective outer shell reduces wear on the drive gears and extends component life. The rigid connection of the support shaft ensures precise cam movement and avoids lift height errors caused by deformation. In addition, the connection method between the cam and the support shaft (such as a locking sleeve) facilitates on-site adjustment of gaps caused by wear, improving the system's maintenance convenience and long-term stability.

[0045] Working principle: This solution mainly realizes the jacking function of the shuttle car through the coordinated process of "power input-transmission conversion-execution action". Specifically, the driving motor in the jacking drive unit 22 provides the initial power, and the rotational motion output by it is decelerated and torque-increased by the reducer, and then transmitted to the driving gear in the jacking gearbox assembly 23; the driving gear is engaged with the driven gear to transmit power to the driven gear. Since the jacking shaft 21 is keyed to the driven gear, the rotation of the driven gear drives the jacking shaft 21 to rotate synchronously; the two ends of the jacking shaft 21 are respectively connected to the driving gears in the jacking cam assembly 24 on both sides, thereby driving the driving gear to rotate, and the driving gear is engaged with another driving gear in the assembly, causing the two driving gears to rotate in opposite directions; the driving gear rotating in opposite directions drives the cam to move synchronously through the support shaft, and the contour surface of the cam contacts the object to be jacked. As the cam rotates, its high point gradually lifts the object to achieve jacking; when the cam rotates to the low point, the object falls back, completing a jacking cycle.

[0046] Throughout the entire process, the lifting gearbox assembly 23 is secured by bolts connected to the reduction gearbox mounting bracket 232, limiting its translational and rotational freedom and ensuring stable gear meshing. The through-hole design of the lifting shaft 21 ensures the synchronization of the cam assemblies on both sides. The meshing of the gears within the cam assembly and the rigid connection to the support shaft ensure the precision of the cam movement. The mechanical transmission of these components forms a closed loop, resulting in a clear power transmission path and highly coordinated movements, thus achieving a stable and reliable lifting function.

[0047] Technical effects of implementing this solution: This solution offers multiple technical advantages by optimizing the structural design and transmission method. In terms of stability, the symmetrically arranged lifting cam assembly 24 and the synchronously driven lifting shaft 21 ensure the horizontality of the material during lifting, avoid tilting or falling due to unbalanced loading, and improve the safety of material handling. The precise limit design of the lifting gearbox assembly 23 reduces vibration and displacement during transmission, reducing noise and component wear. In terms of economy, the installation method of the lifting gearbox assembly 23 reduces the requirements for machining accuracy, increases the production error threshold, reduces rework due to insufficient precision, and reduces production costs. The cam mechanism is fixed with a clamping sleeve, avoiding excessive requirements for keyway and gear machining accuracy, while facilitating on-site adjustment of wear clearance and reducing maintenance costs. In terms of efficiency, the simple transmission chain of "motor-reducer-gearbox-lifting shaft-cam" reduces power loss and improves energy utilization efficiency. The rigid transmission of gear meshing and key connection ensures the timeliness of action response and improves the lifting speed. In terms of adaptability, the gear ratio and cam profile can be adjusted to accommodate different material weights and lifting height requirements, expanding the system's application range. Furthermore, the modular component design facilitates assembly and disassembly, improving production and maintenance convenience and extending the service life of the entire system.

[0048] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is limited by the appended claims rather than the above description. Therefore, it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure signs in the claims should not be regarded as limiting the claims involved.

[0049] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A shuttle vehicle lifting system, characterized in that: include: A lifting system (2) mounted on the vehicle body (1); Wherein, the jacking system (2) comprises a jacking shaft (21), a jacking drive unit (22), a jacking gear box assembly (23) and a jacking cam assembly (24); The lifting cam assembly (24) is installed on two opposite side walls inside the vehicle body (1), and the lifting cam assembly (24) extends to the outside of the vehicle body (1). The lifting cam assemblies (24) on both sides are connected through a lifting shaft (21), and the lifting drive unit (22) drives the lifting shaft (21) to rotate based on the lifting gear box assembly (23).

2. The shuttle vehicle lifting system according to claim 1, characterized in that: The lifting drive unit (22) comprises a driving motor and a reducer, wherein the output shaft of the driving motor is connected to the input end of the reducer, and the output end of the reducer is connected to the lifting gear box assembly (23).

3. The shuttle vehicle lifting system according to claim 2, characterized in that: The lifting gearbox assembly (23) comprises a reduction box (231) and a reduction box fixture bracket (232), wherein the reduction box fixture bracket (232) is connected to the side wall of the reduction box (231) via bolts, and the reduction box fixture bracket (232) is connected to the inner wall of the vehicle body (1) via bolts.

4. The shuttle vehicle lifting system according to claim 3, characterized in that: The reduction box (231) comprises an outer box body and a driving gear and a driven gear rotatably mounted inside the outer box body, wherein the driving gear and the driven gear are meshed with each other, the output end of the reduction box is connected to the driving gear, and the lifting shaft (21) passes through the driven gear and is key-connected to the driven gear.

5. The shuttle vehicle lifting system according to claim 1, characterized in that: The lifting cam assembly (24) comprises an outer shell and two mutually meshing drive gears connected to the outer shell. The two ends of the lifting shaft (21) are respectively connected to a corresponding drive gear in the lifting cam assemblies (24) on both sides. The outer sides of the two drive gears are connected to a support shaft. The outer end of the support shaft passes through the vehicle body (1) and is connected to a cam.

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