Four-way shuttle vehicle

Abstract

The utility model discloses a four-direction shuttle vehicle which comprises a vehicle body, an X-direction walking mechanism, a Y-direction walking mechanism, a two-way driving mechanism and a jacking reversing mechanism. The X-direction walking mechanism, the Y-direction walking mechanism, the two-way driving mechanism and the jacking reversing mechanism are arranged in the vehicle body. The X-direction walking mechanism drives the vehicle body to walk in the X direction, the Y-direction walking mechanism drives the vehicle body to walk in the Y direction, the two-way driving mechanism drives the X-direction walking mechanism and the Y-direction walking mechanism to operate at the same time, and the jacking reversing mechanism achieves lifting of the Y-direction walking mechanism so as to switch the X-direction walking mechanism or the Y-direction walking mechanism to make contact with the ground. The X-direction walking mechanism, the Y-direction walking mechanism and the jacking reversing mechanism are all in gear transmission, so that the problems of oil leakage of a hydraulic system and large size of a chain transmission system are effectively avoided; the structure is compact, the weight is light, and energy conservation and environmental protection are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of intelligent logistics warehousing systems, and more specifically, to a four-way shuttle vehicle. Background Art

[0002] A four-way shuttle vehicle is an intelligent shuttle vehicle handling device integrating functions such as four-way driving, in-situ rail change, automatic handling, intelligent monitoring, and traffic dynamic management. The four-way shuttle vehicle can travel along the longitudinal or transverse track directions on the cross track, reach any designated cargo position in the warehouse, is not restricted by the site, adapts to various working environments, and is freely scheduled at the terminal to achieve full-automatic unattended operation.

[0003] The four-way shuttle vehicle is a core device in the intelligent intensive warehousing system solution and has the function of storing and retrieving goods. As a core device in the warehousing system, its various performances need to meet higher requirements. At present, the four-way shuttle vehicle usually adopts a hydraulic transmission mechanism and a chain drive. However, due to the need to be equipped with a hydraulic system, its volume is large, the thickness is thick, and its own weight is large, which is not conducive to maximizing the storage rate of the intensive warehouse and environmental protection and energy conservation. At the same time, the hydraulic transmission mechanism is prone to oil leakage, affecting its use performance. Due to the characteristics of the chain structure itself, the wear is large and the service life is short. To avoid this, by increasing the chain specification, the diameter of the supporting sprocket will also become larger, resulting in an increase in the overall size and weight of the vehicle, which is also not conducive to maximizing the storage rate of the intensive warehouse and environmental protection and energy conservation.

[0004] Therefore, how to provide a four-way shuttle vehicle with a compact structure, light weight, and more energy-saving and environmental protection is an urgent problem to be solved by those skilled in the art. Content of the Utility Model

[0005] In view of this, the utility model provides a four-way shuttle vehicle, aiming to solve the above technical problems.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A four-way shuttle vehicle includes a vehicle body and an X-direction walking mechanism, a Y-direction walking mechanism, a two-way driving mechanism, and a lifting and reversing mechanism arranged in the vehicle body;

[0008] The X-direction walking mechanism includes an X-direction gearbox, an X-direction transmission shaft, and X-direction walking wheels; the number of X-direction gearboxes is two and they are symmetrically fixed on both sides of the vehicle body in the X direction. The X-direction transmission shaft is placed between the two X-direction gearboxes, and its two ends are respectively in transmission connection with the gears in the two X-direction gearboxes. The X-direction walking wheels are meshed with the gears in the X-direction gearbox;

[0009] The Y-direction travel mechanism comprises a Y-direction gearbox, a telescopic coupling and a Y-direction travel wheel; the number of the Y-direction gearboxes is two and they are symmetrically arranged on both sides of the vehicle body in the Y direction, and the two ends thereof are respectively slidably connected to the two opposite side walls of the two X-direction gearboxes, the telescopic coupling is arranged between the two Y-direction gearboxes and the two ends thereof are respectively connected to the gears in the two Y-direction gearboxes, and the Y-direction travel wheel is meshed with the gears in the Y-direction gearbox;

[0010] The bidirectional driving mechanism is respectively connected to the X-axis transmission shaft and the telescopic coupling;

[0011] The lifting and reversing mechanism is transmission-connected to the Y-direction gear box to drive the lifting and lowering thereof.

[0012] The beneficial effect of the above technical solution is that the bidirectional driving mechanism drives the X-direction running wheel and the Y-direction running wheel to rotate at the same time. When the lifting and reversing mechanism lifts the Y-direction gear box upward, only the X-direction running wheel is in contact with the ground to realize the X-direction running of the vehicle body; when the lifting and reversing mechanism lifts the Y-direction gear box downward, only the Y-direction running wheel is in contact with the ground to realize the Y-direction running of the vehicle body. The vehicle body running wheel avoids the problems of oil leakage in the hydraulic system of the traditional four-way shuttle vehicle and the large size of the chain transmission system by gear transmission.

[0013] Preferably, the housing of the X-axis gearbox is provided with a plurality of mutually meshing X-axis transmission gears, the end of the X-axis transmission shaft is connected to the X-axis transmission gear by a key, the X-axis travel wheel is rotationally connected to the side wall of the X-axis gearbox away from the X-axis transmission shaft, and the X-axis travel wheel is provided with a plurality of X-axis transmission gears respectively meshing with the corresponding X-axis transmission gears. The X-axis gearbox has a plurality of mutually meshing X-axis transmission gears, one of which is transmission-connected to the X-axis transmission shaft, and the other is meshed with the X-axis travel wheel. When the X-axis transmission shaft rotates, it will simultaneously drive the plurality of X-axis transmission gears to rotate, thereby realizing the rotation of the X-axis travel wheel.

[0014] Preferably, the bidirectional drive mechanism includes a travel motor and a three-axis reduction gearbox connected thereto; the telescopic coupling is provided with two, and the first output shaft and the second output shaft of the three-axis reduction gearbox are symmetrically arranged and respectively connected to the opposite ends of the two telescopic couplings, and the third output shaft is key-connected with the X-direction transmission gear to simultaneously drive the X-direction transmission shaft and the telescopic coupling to rotate. After the travel motor is started, it drives the three output shafts of the three-axis reduction gearbox to rotate simultaneously, the first output shaft and the second output shaft drive the telescopic coupling to rotate, and the third output shaft drives the X-direction transmission gear to rotate, and the X-direction transmission gear drives the X-direction transmission shaft to rotate, and the rotation function of the X-direction travel wheel and the Y-direction travel wheel is simultaneously realized by one motor.

[0015] Preferably, the lifting reversing mechanism includes a lifting gearbox, a lifting transmission shaft, a lifting motor, and an eccentric wheel;

[0016] A slider is fixed on the side wall of the Y-direction gearbox away from the Y-direction traveling wheel;

[0017] There are two lifting gearboxes, which are arranged perpendicular to the X-direction gearbox and are arranged between the two Y-direction gearboxes; both ends of the lifting transmission shaft are respectively in transmission connection with the gears in the two lifting gearboxes;

[0018] The lifting motor is in transmission connection with the lifting transmission shaft through a lifting reduction gearbox; the shaft end of the eccentric wheel is connected to the gear in the lifting gearbox by a key, and the wheel end is in transmission connection with the slider to drive the Y-direction gearbox to lift.

[0019] The beneficial effect of the above technical solution is that when the lifting motor starts, the lifting transmission shaft can be driven to rotate through the action of the lifting reduction gearbox. The rotation of the lifting transmission shaft will drive the gear in the lifting gearbox to rotate, and then the rotation of the eccentric wheel can be realized. During the rotation of the eccentric wheel, the slider can be driven to move up and down, thereby realizing the lifting operation of the Y-direction gearbox.

[0020] Preferably, there are two sliders, which are symmetrically fixed at both ends of the side wall of the Y-direction gearbox facing the flexible coupling. The two sliders can better ensure the lifting effect of the Y-direction gearbox.

[0021] Preferably, a plurality of mutually meshing Y-direction transmission gears are arranged in the box body of the Y-direction gearbox. The end of the flexible coupling is in transmission connection with the Y-direction transmission gear. The Y-direction traveling wheel is rotatably connected to the side wall of the Y-direction gearbox away from the flexible coupling. There are a plurality of Y-direction traveling wheels, and each of them is meshed with the corresponding Y-direction transmission gear. The Y-direction traveling wheel realizes its operation in a gear transmission manner.

[0022] Preferably, it further includes a bottom plate and a car body shell. The car body shell is buckled on the top surface of the bottom plate to form the vehicle body. The X-direction gearbox, the bidirectional driving mechanism, and the lifting reversing mechanism are all fixed on the top surface of the bottom plate).

[0023] Preferably, the car body shell includes an outer cover plate, an X-direction traveling wheel protection cover, and a Y-direction traveling wheel protection cover; the outer cover plate is buckled and fixed on the top surface of the bottom plate. The X-direction traveling wheel protection cover is fixed to the side wall of the X-direction gearbox to cover the X-direction traveling wheel. The Y-direction traveling wheel protection cover is fixed to the side wall of the Y-direction gearbox to cover the Y-direction traveling wheel.

[0024] The beneficial effect of the above technical solution is that the bottom plate is used to fix each component of the vehicle body, and the car body shell protects it from damage.

[0025] Preferably, a maintenance cover plate is detachably connected to the middle of the top surface of the outer cover plate, facilitating the maintenance work of the vehicle body.

[0026] Preferably, both the bottom plate and the vehicle shell are made of aluminum alloy, and the sum of the thickness of the bottom plate and the height of the vehicle shell is not greater than 125 mm. The combination of aluminum alloy and gear drive makes the structure of the four-way shuttle car more compact and lighter in weight.

[0027] Through the above technical solutions, compared with the prior art, the present utility model discloses a four-way shuttle car. The X-direction walking mechanism, Y-direction walking mechanism and lifting and reversing mechanism all adopt gear drive, effectively avoiding the problems of oil leakage in the hydraulic system and large volume of the chain drive system; the structure is compact, the weight is light, and it is more energy-saving and environment-friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0029] Figure 1 is a schematic structural diagram of the shuttle car provided by the present utility model;

[0030] Figure 2 is a schematic internal structure diagram of the shuttle car provided by the present utility model Figure 1 ;

[0031] Figure 3 is a schematic internal structure diagram of the shuttle car provided by the present utility model Figure 2 ;

[0032] Figure 4 is a side view of the lifting and reversing mechanism provided by the present utility model.

[0033] Among them,

[0034] 1 - vehicle shell; 11 - maintenance cover plate; 12 - outer cover plate; 13 - X-direction walking wheel protection cover; 14 - Y-direction walking wheel protection cover;

[0035] 2 - bottom plate;

[0036] 3 - X-direction walking mechanism; 31 - X-direction gear box; 32 - X-direction transmission shaft; 33 - X-direction walking wheel;

[0037] 4 - Y-direction walking mechanism; 41 - Y-direction gear box; 42 - telescopic coupling; 43 - Y-direction walking wheel;

[0038] 5 - Two - way drive mechanism; 51 - Travel motor; 52 - Three - axis reduction gearbox;

[0039] 6 - Lifting reversing mechanism; 61 - Lifting motor; 62 - Lifting reduction gearbox; 63 - Lifting transmission shaft; 64 - Eccentric wheel; 65 - Lifting gearbox;

[0040] 7 - Battery pack. Specific embodiments

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0042] See the attached Figures 1 to 4 In the embodiments of the present invention, a four - way shuttle car is disclosed, including a vehicle body and an X - direction travel mechanism 3, a Y - direction travel mechanism 4, a two - way drive mechanism 5, and a lifting reversing mechanism 6 arranged inside the vehicle body;

[0043] In the direction shown in the figure, left - right is defined as the X - direction of the vehicle body, and up - down is defined as the Y - direction of the vehicle body.

[0044] The X - direction travel mechanism 3 includes an X - direction gearbox 31, an X - direction transmission shaft 32, and X - direction travel wheels 33; the number of X - direction gearboxes 31 is two and they are symmetrically fixed on both sides of the vehicle body in the X - direction. The X - direction transmission shaft 32 is placed between the two X - direction gearboxes 31, and its two ends are respectively in transmission connection with the gears inside the two X - direction gearboxes 31. The X - direction travel wheels 33 are meshed with the gears inside the X - direction gearboxes 31;

[0045] The Y - direction travel mechanism 4 includes a Y - direction gearbox 41, a flexible coupling 42, and Y - direction travel wheels 43; the number of Y - direction gearboxes 41 is two and they are symmetrically arranged on both sides of the vehicle body in the Y - direction. Their two ends are respectively slidably connected to the opposite side walls of the two X - direction gearboxes 31. The flexible coupling 42 is arranged between the two Y - direction gearboxes 41, and its two ends are respectively in transmission connection with the gears inside the two Y - direction gearboxes 41. The Y - direction travel wheels 43 are meshed with the gears inside the Y - direction gearboxes 41;

[0046] The two - way drive mechanism 5 is respectively in transmission connection with the X - direction transmission shaft 32 and the flexible coupling 42;

[0047] The lifting reversing mechanism 6 is in transmission connection with the Y - direction gearbox 41 to drive its lifting.

[0048] As Figure 3As shown, the X-direction walking mechanism drives the vehicle body to walk in the X direction, and the Y-direction walking mechanism drives the vehicle body to walk in the Y direction. The two-way drive simultaneously drives the transmission of the X-direction drive shaft and the telescopic coupling, thereby realizing the synchronous rotation of the X-direction walking wheels and the Y-direction walking wheels. When the lifting and reversing mechanism drives the Y-direction gearbox to rise, the Y-direction walking mechanism is lifted. At this time, only the X-direction walking wheels are in contact with the ground, realizing the X-direction walking of the vehicle body. When the lifting and reversing mechanism drives the Y-direction gearbox to slide downward, the entire vehicle body and the X-direction walking mechanism are lifted, and only the Y-direction walking wheels are in contact with the ground, realizing the Y-direction walking of the vehicle body.

[0049] To further optimize the above technical solution, multiple mutually meshing X-direction transmission gears are provided inside the housing of the X-direction gearbox 31. The end of the X-direction drive shaft 32 is key-connected to the X-direction transmission gear. The X-direction walking wheels 33 are rotatably connected to the side wall of the X-direction gearbox 31 away from the X-direction drive shaft 32. There are multiple X-direction walking wheels 33 and they are respectively meshed with their corresponding X-direction transmission gears. The X-direction walking mechanism adopts a gear transmission method. When the X-direction drive shaft rotates, the multiple X-direction transmission gears in the two X-direction gearboxes rotate in a driven manner, thereby being able to drive the X-direction walking wheels to rotate.

[0050] To further optimize the above technical solution, multiple mutually meshing Y-direction transmission gears are provided inside the housing of the Y-direction gearbox 41. The end of the telescopic coupling 42 is drivingly connected to the Y-direction transmission gear. The Y-direction walking wheels 43 are rotatably connected to the side wall of the Y-direction gearbox 41 away from the telescopic coupling 42. There are multiple Y-direction walking wheels 43 and they are respectively meshed with their corresponding Y-direction transmission gears. The Y-direction walking mechanism also adopts gear transmission. When the telescopic coupling rotates, the multiple Y-direction transmission gears in the two Y-direction gearboxes rotate in a driven manner, thereby being able to drive the Y-direction walking wheels to rotate.

[0051] In this embodiment, the two-way drive mechanism 5 includes a walking motor 51 and a three-axis reduction gearbox 52 drivingly connected thereto; there are two telescopic couplings 42. The first output shaft and the second output shaft symmetrically arranged on the three-axis reduction gearbox 52 are respectively drivingly connected to the opposite ends of the two telescopic couplings 42. The third output shaft is key-connected to the X-direction transmission gear to simultaneously drive the X-direction drive shaft 32 and the telescopic coupling 42 to rotate. When the walking motor operates, it simultaneously drives the first output shaft, the second output shaft, and the third output shaft of the three-axis reduction gearbox to rotate, thereby simultaneously driving the X-direction drive shaft and the telescopic coupling to rotate, realizing the synchronous rotation of the X-direction walking wheels and the Y-direction walking wheels. Cooperating with the lifting and reversing mechanism, the X-direction or Y-direction walking of the vehicle body can be realized.

[0052] To further optimize the above technical solution, the lifting and reversing mechanism 6 includes a lifting gearbox 65, a lifting drive shaft 63, a lifting motor 61, and an eccentric wheel 64;

[0053] A slider is fixed on the side wall of the Y-direction gearbox 41 away from the Y-direction traveling wheel 43.

[0054] There are two jacking gearboxes 65, which are arranged perpendicular to the X-direction gearbox 31 and are arranged between the two Y-direction gearboxes 41; both ends of the jacking transmission shaft 63 are respectively connected to the gears in the two jacking gearboxes 65 in a transmission manner.

[0055] The jacking motor 61 is connected to the jacking transmission shaft 63 through the jacking reduction gearbox 62; the shaft end of the eccentric wheel 64 is connected to the gear in the jacking gearbox 65 by a key, and the wheel end is connected to the slider in a transmission manner to drive the Y-direction gearbox 41 to rise and fall.

[0056] The jacking reversing mechanism adopts gear transmission. After the jacking motor starts, it drives the rotation of the jacking transmission shaft through the jacking reduction gearbox. The rotation of the jacking transmission shaft will drive the gears in the two jacking gearboxes to operate, thereby realizing the rotation of the eccentric wheel. During the rotation process of the eccentric wheel, it can drive the slider to move up or down, thereby realizing the lifting and lowering of the Y-direction gearbox. During the lifting and lowering process of the Y-direction gearbox, it will drive the Y-direction traveling wheel to rise and fall, so as to switch the contact state between the Y-direction traveling wheel and the X-direction traveling wheel and the ground, and realize the walking of the vehicle body. The lifting and lowering of the slider is realized by the forward or reverse rotation of the jacking motor.

[0057] In order to further optimize the above technical solution and better realize the lifting and lowering of the Y-direction gearbox, there are two sliders, which are symmetrically fixed at both ends of the side wall of the Y-direction gearbox 41 facing the flexible coupling 42.

[0058] In this embodiment, it further includes a bottom plate 2 and a vehicle shell 1. The vehicle shell 1 is buckled on the top surface of the bottom plate 2 to form the vehicle body. The X-direction gearbox 31, the bidirectional driving mechanism 5 and the jacking reversing mechanism 6 are all fixed on the top surface of the bottom plate 2. The X-direction gearbox and the jacking gearbox are fixed on the bottom plate, the Y-direction gearbox is slidably connected to the X-direction gearbox, and the traveling motor is fixed on the side wall of the Y-direction gearbox. When the Y-direction gearbox is lifted and lowered, the flexible coupling will elongate.

[0059] In order to further optimize the above technical solution, the vehicle shell 1 includes an outer cover plate 12, an X-direction traveling wheel protection cover 13 and a Y-direction traveling wheel protection cover 14; the outer cover plate 12 is buckled and fixed on the top surface of the bottom plate 2, the X-direction traveling wheel protection cover 13 is fixed to the side wall of the X-direction gearbox 31 to cover the X-direction traveling wheel 33, and the Y-direction traveling wheel protection cover 14 is fixed to the side wall of the Y-direction gearbox 41 to cover the Y-direction traveling wheel 43. The vehicle shell sheathes and protects each mechanism, and only the X-direction traveling wheel and the Y-direction traveling wheel of the whole vehicle body are exposed outside the vehicle shell.

[0060] In order to further optimize the above technical solution and facilitate the maintenance of the vehicle body, a maintenance cover plate 11 is detachably connected to the middle of the top surface of the outer cover plate 12.

[0061] To further optimize the above technical solution and achieve the lightweight and ultra-thin design of the vehicle body, both the bottom plate 2 and the vehicle shell 1 are made of aluminum alloy material, and the sum of the thickness of the bottom plate 2 and the height of the vehicle shell 1 is not greater than 125 mm. By using high-strength aluminum alloy material and the gear drive method, the weight, thickness and volume of the vehicle body are reduced to meet the lightweight requirements of the four-way shuttle vehicle.

[0062] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple. For the relevant parts, reference can be made to the description in the method section.

[0063] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A four-way shuttle vehicle, characterized in that: It comprises a vehicle body and an X-direction walking mechanism (3), a Y-direction walking mechanism (4), a bidirectional driving mechanism (5) and a lifting and reversing mechanism (6) arranged in the vehicle body; The X-direction traveling mechanism (3) comprises an X-direction gear box (31), an X-direction transmission shaft (32) and an X-direction traveling wheel (33); the X-direction gear boxes (31) are two in number and are symmetrically fixed on both sides of the vehicle body in the X direction; the X-direction transmission shaft (32) is disposed between the two X-direction gear boxes (31) and its two ends are respectively connected to the gears in the two X-direction gear boxes (31); the X-direction traveling wheel (33) is meshed with the gears in the X-direction gear box (31); The Y-direction traveling mechanism (4) comprises a Y-direction gear box (41), a telescopic coupling (42) and a Y-direction traveling wheel (43); the Y-direction gear boxes (41) are two in number and are symmetrically arranged on both sides of the vehicle body in the Y direction, and the two ends thereof are respectively slidably connected to the two opposite side walls of the two X-direction gear boxes (31); the telescopic coupling (42) is arranged between the two Y-direction gear boxes (41) and the two ends thereof are respectively transmission-connected to the gears in the two Y-direction gear boxes (41), and the Y-direction traveling wheel (43) is meshed with the gears in the Y-direction gear box (41); The bidirectional driving mechanism (5) is respectively connected to the X-direction transmission shaft (32) and the telescopic coupling (42); The lifting and reversing mechanism (6) is transmission-connected to the Y-direction gear box (41) to drive the lifting and lowering thereof.

2. A four-way shuttle vehicle according to claim 1, characterized in that: A plurality of mutually meshing X-direction transmission gears are arranged in the box body of the X-direction gear box (31); the end of the X-direction transmission shaft (32) is connected to the X-direction transmission gear via a key; the X-direction travel wheel (33) is rotatably connected to a side wall of the X-direction gear box (31) away from the X-direction transmission shaft (32); and the X-direction travel wheel (33) is provided with a plurality of X-direction transmission gears respectively meshing with the corresponding X-direction transmission gears.

3. A four-way shuttle vehicle according to claim 2, characterized in that: The bidirectional drive mechanism (5) comprises a travel motor (51) and a three-axis reduction gearbox (52) in transmission connection with the travel motor (51); the telescopic couplings (42) are provided with two, a first output shaft and a second output shaft of the three-axis reduction gearbox (52) are symmetrically arranged and are respectively in transmission connection with opposite ends of the two telescopic couplings (42); the third output shaft is key-connected with the X-direction transmission gear to simultaneously drive the X-direction transmission shaft (32) and the telescopic coupling (42) to rotate.

4. A four-way shuttle vehicle according to claim 3, characterized in that: The lifting reversing mechanism (6) comprises a lifting gear box (65), a lifting transmission shaft (63), a lifting motor (61) and an eccentric wheel (64); A sliding block is fixed on the side wall of the Y-direction gear box (41) away from the Y-direction running wheel (43); The lifting gear boxes (65) are two and are arranged perpendicularly to the X-direction gear boxes (31) and are disposed between the two Y-direction gear boxes (41); the two ends of the lifting transmission shaft (63) are respectively connected to the gears in the two lifting gear boxes (65); The lifting motor (61) is connected to the lifting transmission shaft (63) through a lifting reduction box (62); the shaft end of the eccentric wheel (64) is connected to the gear in the lifting gear box (65) through a key, and the wheel end is connected to the slider to drive the Y-axis gear box (41) to rise and fall.

5. A four-way shuttle vehicle according to claim 4, characterized in that: The sliding blocks are provided with two and are symmetrically fixed at two ends of the side wall of the Y-direction gear box (41) facing the telescopic coupling (42).

6. A four-way shuttle vehicle according to claim 1, characterized in that: A plurality of mutually meshing Y-direction transmission gears are arranged in the box body of the Y-direction gear box (41); the end of the telescopic coupling (42) is transmission-connected to the Y-direction transmission gear; the Y-direction travel wheel (43) is rotationally connected to a side wall of the Y-direction gear box (41) away from the telescopic coupling (42); and the Y-direction travel wheel (43) is multiple and respectively meshes with the corresponding Y-direction transmission gears.

7. The four-way shuttle vehicle according to claim 1, characterized in that: It also includes a bottom plate (2) and a vehicle shell (1), wherein the vehicle shell (1) is buckled onto the top surface of the bottom plate (2) to form the vehicle body, and the X-direction gear box (31), the bidirectional drive mechanism (5) and the lifting and reversing mechanism (6) are all fixed on the top surface of the bottom plate (2).

8. A four-way shuttle vehicle according to claim 7, characterized in that: The vehicle shell (1) comprises an outer cover plate (12), an X-direction running wheel protection cover (13) and a Y-direction running wheel protection cover (14); the outer cover plate (12) is fastened and fixed to the top surface of the bottom plate (2); the X-direction running wheel protection cover (13) is fixed to the side wall of the X-direction gear box (31) to cover the X-direction running wheel (33); and the Y-direction running wheel protection cover (14) is fixed to the side wall of the Y-direction gear box (41) to cover the Y-direction running wheel (43).

9. A four-way shuttle vehicle according to claim 8, characterized in that: The middle part of the top surface of the outer cover plate (12) is detachably connected with an inspection cover plate (11).

10. The four-way shuttle vehicle according to claim 7, characterized in that: The bottom plate (2) and the vehicle shell (1) are both made of aluminum alloy, and the sum of the thickness of the bottom plate (2) and the height of the vehicle shell (1) is no greater than 125 mm.

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