Full-tooth walking driving assembly of four-way shuttle vehicle for dense storage vertical warehouse

Abstract

The invention relates to the technical field of warehouse logistics equipment, discloses a full-tooth walking driving assembly of a four-way shuttle vehicle for a dense storage vertical warehouse, and aims to solve the problem that the load of a vehicle body is increased due to the adoption of multiple sets of driving systems. Power can be output in the X-axis direction and the Y-axis direction through the driving wheel box, the power acts on the auxiliary rail wheels and the main rail wheels, power can be provided for multi-direction movement of the four-direction vehicle through one set of driving motor, and therefore the problem that due to superposition of multiple sets of driving systems, the weight and the size of the four-direction vehicle are increased is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of warehousing and logistics equipment, and in particular to a four-way shuttle full-tooth walking drive assembly for an automated storage and retrieval system (AS / RS). Background Art

[0002] A four-way shuttle is an intelligent handling device that can autonomously move in four directions, forward and backward, left and right, within a rack aisle. With the help of a dual-axis drive or a wheel group steering mechanism, this device can complete lateral and longitudinal direction switching within the aisle without changing tracks, thus breaking through the limitation of the traditional shuttle's one-way operation.

[0003] After retrieval, the patent with publication number CN118289381A proposed a four-way shuttle solution. In the scenario of an automated storage and retrieval system, the control system manipulates the four-way shuttle to move in the X direction or the Y direction according to instructions through a communication tool. When switching between the X direction and the Y direction is required, the reversing system 4 controls the Y-direction lifting plate 22 to rise or fall, so that the X-direction driving wheels and driven wheels contact the ground, or the Y-direction driving wheels 17 and driven wheels contact the ground. Subsequently, through their respective drive mechanisms, the four-way shuttle is driven to move forward and backward in the X direction or the Y direction.

[0004] To achieve stable transmission of the four-way shuttle, this solution adopts a full-gear power transmission method and uses two sets of drive systems to control the movement of the driving wheels and driven wheels respectively. However, in actual applications, due to the limited volume of the four-way shuttle itself, installing two sets of drive mechanisms will increase the occupied volume of the equipment, and at the same time, the load capacity will also be affected, thus increasing the volume and weight of the four-way shuttle accordingly. Summary of the Invention

[0005] The present invention proposes a four-way shuttle full-tooth walking drive assembly for an automated storage and retrieval system, which can realize the four-way movement function of the whole machine with only one set of drive system, effectively solving the problem of increased vehicle load caused by using multiple sets of drive systems in the background art.

[0006] To achieve the above object, the present invention adopts the following technical solution: A four-way shuttle full-tooth walking drive assembly for an automated storage and retrieval system, comprising: a drive wheel box, inside which a short shaft and a spur gear rotating shaft perpendicular to the short shaft are installed; a bevel gear one, a bevel gear two, a bevel gear three, and a bevel gear four are arranged inside the drive wheel box; the bevel gear one is connected to a drive motor; both the bevel gear two and the bevel gear four are installed on the short shaft and mesh with the bevel gear one to realize the rotation of the short shaft and drive the main track wheel to rotate; the bevel gear three is coaxially installed with the spur gear rotating shaft and meshes with the bevel gear four and the bevel gear two respectively to realize the bevel gear three driving the auxiliary track wheel to rotate.

[0007] Further, the short axis is drivingly connected to the second bevel gear by means of a spline; a meshing push spring between the second bevel gear and the drive wheel box enables the second bevel gear to be close to meshing with the first bevel gear; the third bevel gear is installed in the same way as the second bevel gear, and the third bevel gear meshes with the third bevel gear / the second bevel gear under the elastic force of the meshing push spring.

[0008] Further, a four-way pipe is installed at the inner bottom of the drive wheel box, and a switching ejector rod is movably installed in the pipes facing the second bevel gear and the third bevel gear; and a metal piston is provided at the end of the switching ejector rod; an electromagnet coaxial with the switching ejector rod is installed at the end of the four-way pipe, and when the electromagnet is energized and attracts the metal piston, the switching ejector rod is made to abut against the second bevel gear / the third bevel gear and release its meshing with the adjacent gear.

[0009] Further, a braking ejector rod on the side of the fourth bevel gear is movably installed in the four-way pipe, and a return push spring is provided between the braking ejector rod and the four-way pipe.

[0010] Further, a deceleration control pipe is installed at the end of the four-way pipe and on the side of the first bevel gear. The deceleration control pipe includes: a sphere, a deceleration spring and a speed adjustment bolt; the speed adjustment bolt is threadedly connected inside the deceleration control pipe, and a deceleration spring is fixedly installed at the end of the speed adjustment bolt, and the deceleration spring abuts against the sphere to achieve the sealing of the deceleration control pipe.

[0011] Further, an inlet groove is formed at the end of the four-way pipe and on the side of the switching ejector rod.

[0012] Further, a filter is threadedly connected to the bottom of the deceleration control pipe, and a filter element is installed in the filter.

[0013] Further, a pressure limiting valve extending from the bottom of the drive wheel box is fixedly installed at the bottom of the filter.

[0014] The present invention has the following beneficial effects:

[0015] A four-way shuttle full-tooth walking drive assembly for an intensive storage vertical warehouse provided by the present invention drives the drive wheel box to start running through a set of drive motors. The drive motor, as a power source, has a strong torque output capacity and can meet the actual operation requirements of the four-way shuttle. The drive wheel box, as a key hub for power transmission, uses multiple bevel gears for transmission inside to ensure the smoothness and accuracy of power transmission.

[0016] After the driving wheel box starts working, it can output the power generated by the driving motor in the X and Y axis directions. In the X-axis direction, the power acts on the main track wheels. The main track wheels are in close contact with the main tracks in the automated storage and retrieval system (AS / RS). Driven by a powerful driving force, the four-way shuttle vehicle can move linearly in the front and back directions on the main tracks. In the Y-axis direction, the power is also transmitted to the auxiliary track wheels. The auxiliary track wheels cooperate with the auxiliary tracks to provide power support for the four-way shuttle vehicle to move in the left and right directions, enabling it to shuttle flexibly between different storage shelves.

[0017] The full-tooth walking drive assembly of the present invention uses only one set of driving motors to ingeniously provide sufficient and stable power for the multi-directional movement of the four-way vehicle. This innovative design fundamentally avoids the problems of increased load and volume of the four-way vehicle caused by the superposition of multiple sets of driving systems. Multiple sets of driving systems will not only increase the overall weight of the vehicle body, reducing its load capacity, but also occupy more space, restricting the operation of the four-way shuttle vehicle in a narrow warehousing environment. On the premise of ensuring the multi-directional movement function of the four-way vehicle, the assembly of the present invention realizes the lightweight and compact design of the vehicle body, improving the flexibility and operation efficiency of the four-way shuttle vehicle in the automated storage and retrieval system (AS / RS). BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings forming a part of the specification depict the embodiments disclosed by the present invention and, together with the specification, are used to explain the principles disclosed by the present invention.

[0019] Referring to the drawings, the present invention can be more clearly understood from the following detailed description, wherein:

[0020] Figure 1 is a schematic diagram of the working scenario of the four-way vehicle;

[0021] Figure 2 is a schematic diagram of the external structure of the four-way vehicle;

[0022] Figure 3 is a schematic diagram of the transmission system structure of the four-way vehicle;

[0023] Figure 4 is a schematic diagram of the structure of the full-tooth walking drive assembly;

[0024] Figure 5 is a schematic diagram of the structure of the side wheel box;

[0025] Figure 6 is a schematic diagram of the structure of the walking long shaft;

[0026] Figure 7 is a schematic diagram of the structure of the driving wheel box;

[0027] Figure 8 is a schematic diagram of the transmission structure in the driving wheel box;

[0028] Figure 9 It is a schematic diagram of the connection and structure between bevel gears;

[0029] Figure 10 It is a schematic diagram of the position and structure of the four-way pipe;

[0030] Figure 11 It is a schematic diagram of the internal structure of the four-way pipe.

[0031] In the figure: 1, four-way vehicle; 2, main track; 3, auxiliary track; 4, goods; 5, auxiliary track wheel; 6, main track wheel; 7, lifting plate; 9, lifting motor; 10, full-tooth walking drive assembly; 12, lifting shaft; 13, cam; 14, main body; 15, slide rail; 16, slider; 17, side plate; 21, gear train; 31, side wheel box group; 32, motor wheel box group; 33, walking long shaft; 34, bevel gear; 341, bevel gear one; 342, bevel gear two; 343, bevel gear three; 344, bevel gear four; 35, side wheel box; 36, spur gear; 37, oil cup; 38, gear cavity; 41, keyway; 42, avoidance groove; 44, drive wheel box; 45, drive motor; 46, transmission shaft; 47, universal joint coupling; 49, fixing plate; 51, push plate; 52, meshing push spring; 53, four-way pipe; 530, inlet groove; 54, switching ejector rod; 55, brake ejector rod; 551, return push spring; 56, electromagnet; 57, filter; 571, filter element; 572, pressure limiting valve; 58, deceleration control pipe; 580, ball; 581, deceleration spring; 582, speed adjustment bolt; 59, spline. Specific embodiments

[0032] 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 the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0033] Refer to Figure 1 and Figure 2 As shown, the main track wheel 6 of the four-way vehicle 1 walks on the main track 2, and the auxiliary track wheel 5 walks on the auxiliary track 3. The main track 2 is lower than the auxiliary track 3.

[0034] The four-way vehicle 1 enters under the goods 4 along the auxiliary track 3. After the lifting plate 7 moves upward and lifts the goods 4, the four-way vehicle 1 enters the main track 2 along the auxiliary track 3. Then, after the main track wheels 6 move downward to contact the main track 2 and lift the auxiliary track wheels 5 off the auxiliary track 3, the four-way vehicle 1 enters the designated cargo position fork along the main track 2. After that, the main track wheels 6 move upward to leave the main track 2 and lower the auxiliary track wheels 5 to contact the auxiliary track 3, and the four-way vehicle 1 enters the designated cargo position along the auxiliary track 3. The lifting plate 7 moves downward to put down the goods 4. The four-way vehicle 1 completes one pick-up and delivery operation.

[0035] Figure 3 It is a schematic structural diagram of the transmission system of the four-way vehicle 1. The auxiliary track wheels 5 are rotatably installed on the four-way vehicle main body 14, and the main track wheels 6 are rotatably installed on the side plates 17. Sliders 16 are installed at both ends of the side plates 17, and the sliders 16 are installed in cooperation with the slide rails 15 fixed on the main body 14. The side plates 17 can move up and down along the slide rails 15 on the main body 14. The lifting motor 9 is fixed on the main body 14 and is connected to the gears in the gear train 21. Cam 13 is installed on the gears at both ends of the gear train 21. The lifting motor 9 drives the cam 13 to rotate through the gear train 21, and then drives the side plates 17 to move up and down. The lifting shaft 12 is fixedly connected to the gear trains 21 on both sides of the four-way vehicle 1 to realize the synchronous up and down movement of the side plates 17 on both sides of the four-way vehicle 1. The lifting plate 7 is fixed on the side plates 17 on both sides of the four-way vehicle 1 and moves up and down with the side plates 17 on both sides.

[0036] The full-tooth walking drive assembly 10 is fixed on the main body 14, and its four ends are respectively connected to the auxiliary track wheels 5 and the main track wheels 6 on the four sides and drive them to rotate, so that the four-way vehicle 1 runs in four directions along the track.

[0037] Figure 4 It is a schematic structural diagram of the full-tooth walking drive assembly. It is assembled by the side wheel box group 31, the motor wheel box group 32 and the walking long shaft 33. The side wheel box 35 is fixed on the main body 14 by bolts. The walking long shaft 33 rotatably connects the side wheel boxes 35 on both sides of the four-way vehicle 1 together and forms a set of side wheel box groups 31. The motor wheel box group 32 is fixed on the side wheel box 35 on one side of the four-way vehicle 1.

[0038] Figure 5 It is a schematic structural diagram of the side wheel box 35. A gear cavity 38 is opened inside the side wheel box 35, and the spur gear 36 is rotatably installed therein. The bevel gear 34 and the auxiliary track wheel 5 are fixed on the spur gear 36 and rotate with the spur gear 36. The side wheel box 35 is fixed on the main body 14 by bolts through the fixing holes opened on the side. An oil cup 37 is installed on the top of the side wheel box 35 for easy lubricating oil filling. Wheel box fixing holes are opened on the side of the side wheel box 35.

[0039] Figure 6Schematic diagram of the walking long shaft 33 structure. Key grooves 41 are opened at both ends of the walking long shaft 33, and the two side wheel boxes 35 of the four-way vehicle 1 are connected by keys to transmit the power of the two side wheel boxes 35. An avoidance groove 42 is opened in the middle of the walking long shaft 33 to avoid the lifting shaft 12.

[0040] Figure 7 Schematic diagram of the drive wheel box 44 structure. The drive wheel box 44 is fixed on the side wheel box 35 through the wheel box fixing holes with bolts. The drive motor 45 is fixed on the drive wheel box 44, and a bevel gear 34 is installed at the end of the drive motor 45. The fixing plate 49 is fixed on the main body 14, and the transmission shaft 46 is rotatably fixed on the two fixing plates 49. One end is connected to the short shaft through a cross-slider clamping coupling, and the other end is connected to the main rail wheel 6 through a universal joint coupling 47. The short shaft is rotatably fixed in the drive wheel box 44, and the other end of the short shaft is connected to the main rail wheel 6 through a universal joint coupling 47. A bevel gear 34 is installed on the short shaft. There are four bevel gears 34 meshing with each other inside the drive wheel box 44 to transmit the power of the drive motor 45 to the auxiliary rail wheel 5 and the main rail wheel 6.

[0041] Figure 8 Schematic diagram of the transmission structure in the drive wheel box. There are four bevel gears in the drive wheel box 44, named bevel gear one 341, bevel gear two 342, bevel gear three 343, and bevel gear four 344 in clockwise order. The bevel gear one 341 is connected to the drive motor 45 to facilitate the transmission of its power outward. The bevel gear two 342 and the bevel gear four 344 are both installed on the short shaft connected to the main rail wheel 6. And the bevel gear four 344 and the bevel gear three 343 are both meshed with the bevel gear one 341. It should be noted that the bevel gear two 342 rotates coaxially with the short shaft, and the bevel gear four 344 is sleeved and connected with the short shaft to ensure that when the bevel gear one 341 drives the short shaft, the movement of the bevel gear four 344 will not hinder the movement of the short shaft. The bevel gear three 343 is symmetrically arranged with the bevel gear one 341, and the bevel gear three 343 is meshed and transmitted with the bevel gear four 344 and the bevel gear two 342 respectively. By using the transmission of the bevel gear four 344 and the bevel gear two 342, the coaxial rotation between the bevel gear three 343 and the spur gear 36 is realized, and then power is provided for the auxiliary rail wheel 5. In application, since the drive motor 45 can provide power for the movement of the four-way vehicle 1, through the transmission of multiple bevel gears in the drive wheel box 44, the power is respectively applied to the auxiliary rail wheel 5 and the main rail wheel 6, so that only one set of mechanisms is required between the auxiliary rail wheel 5 and the main rail wheel 6 to realize the movement of the whole vehicle.

[0042] Since only one of the auxiliary rail wheel 5 and the main rail wheel 6 will work when the four-way shuttle car is working, in order to ensure that the drive motor 45 can output all the power to the required auxiliary rail wheel 5 / main rail wheel 6, from Figure 9It can be seen that the second bevel gear 342 is driven according to the spline 59 on the short shaft. Not only can the short shaft drive the second bevel gear 342 to rotate, but the second bevel gear 342 can also move horizontally along the spline 59. Under normal conditions, in order to ensure stable meshing between the second bevel gear 342 and the first bevel gear 341, the meshing push spring 52 arranged between the second bevel gear 342 and the drive wheel box 44 is used to force the second bevel gear 342 to always maintain a meshing relationship with the first bevel gear 341. In order to reduce the contact friction resistance between the meshing push spring 52 and the second bevel gear 342, a push plate 51 can be arranged between the end of the second bevel gear 342 and the meshing push spring 52. The side of the push plate 51 includes circumferentially arranged balls. Based on the balls pressing against the second bevel gear 342, the movement resistance between the push plate 51 and the second bevel gear 342 can be reduced. At the same time, a meshing push spring 52 and a push plate 51 are also arranged between the third bevel gear 343 and the rotating shaft of the spur gear 36, and a spline 59 is also arranged on the rotating shaft of the spur gear 36. Finally, it is realized that both the third bevel gear 343 and the second bevel gear 342 can be disengaged / engaged with the adjacent bevel gears by axial movement.

[0043] Figure 10 is a schematic diagram of the position and structure of the four-way pipe, Figure 11It is a schematic diagram of the internal structure of the four-way pipe. As can be seen from the above content, at the inner bottom of the drive wheel box 44, there is a four-way pipe 53 fixedly installed by means of a bracket. The four-way pipe 53 is in a cross shape. Inside the pipes facing the second bevel gear 342 and the third bevel gear 343, there are switching ejector rods 54 movably installed. Specifically, a metal piston is provided at the end of the switching ejector rod 54. When sealing is required, a sealing ring can be sleeved outside the metal piston. At the end of the four-way pipe 53 and near the second bevel gear 342 and the second bevel gear 342, there is an electromagnet 56 fixedly installed by means of a threaded cylinder. When the electromagnet 56 is energized, it can generate magnetism and attract the piston coaxially placed with it. The advantage of this design is that when the auxiliary track wheel 5 needs to work, the electromagnet 56 near the second bevel gear 342 is energized, so that the electromagnet 56 attracts the piston at the second bevel gear 342, and the switching ejector rod 54 is used to push the second bevel gear 342, forcing the second bevel gear 342 to disengage from the first bevel gear 341 and the third bevel gear 343. At this time, the driving motor 45 transmits power through the first bevel gear 341, the fourth bevel gear 344 and the third bevel gear 343, and outputs the power to the auxiliary track wheel 5; similarly, when the main track wheel 6 needs to work, the electromagnet 56 at the third bevel gear 343 is connected. The transmission and cut-off of power can be realized by means of electric control. For the layout of the power control system, a PLC control system can be adopted, so that before the four-way vehicle 1 needs to move, the third bevel gear 343 / the second bevel gear 342 starts to disengage, ensuring that the driving motor 45 can output all the power to the running track wheels. Therefore, it can be seen that although a single set of driving system is used in this application for work, in actual work, the driving system only supplies energy to the auxiliary track wheel 5 and the main track wheel 6 separately, ensuring that while the number of driving components is reduced, the output power remains unchanged.

[0044] Reference Figure 10 and Figure 11It can be seen that a brake push rod 55 located on one side of the bevel gear four 344 is movably installed in the four-way pipe 53, and the end of the brake push rod 55 is hermetically slid inside the four-way pipe 53 by means of a piston. A return push spring 551 is arranged between the piston and the four-way pipe 53. Under normal conditions, under the elastic force of the return push spring 551, the brake push rod 55 has a tendency to retract into the four-way pipe 53. During actual operation, lubricating oil for transmission is injected into the inner cavity of the four-way pipe 53. From the above, it can be known that during the movement of the four-way vehicle 1, a switching push rod 54 extends outwards under the magnetic attraction of the electromagnet 56. Therefore, the return push spring 551 can push the brake push rod 55 to retract into the four-way pipe 53, and the brake push rod 55 is relatively far away from the bevel gear four 344. When a braking action is required, the electromagnet 56 stops working. Under the elastic force of the meshing push spring 52, the bevel gear three 343 and the bevel gear two 342 move closer to each other and mesh, and both will also push their respective switching push rods 54 to retract into the four-way pipe 53. At this time, the oil pressure in the four-way pipe 53 increases, and then the brake push rod 55 is pushed outwards and abuts against the bevel gear four 344. On the one hand, when the bevel gear three 343 and the bevel gear two 342 are both meshed, the load on the bevel gear one 341 will increase; on the other hand, when the brake push rod 55 abuts against the end of the bevel gear four 344, the movement resistance of the bevel gear four 344 will increase, further increasing the load on the bevel gear one 341.

[0045] In the process of actual application, when the bevel gear two 342 and the bevel gear three 343 are both in the meshed state, the length by which they push the brake push rod 55 outwards is relatively fixed. During long-term application, the contact friction between the brake push rod 55 and the bevel gear four 344 will cause the brake push rod 55 to wear and become shorter, and its braking force will also change. On this basis, combined with Figure 10 and Figure 11It can be seen that a deceleration control pipe 58 is threadedly connected to the end of the four-way pipe 53 and near the first bevel gear 341. The deceleration control pipe 58 includes a sphere 580, a deceleration spring 581, and a speed adjustment bolt 582. The speed adjustment bolt 582 is threadedly connected inside the deceleration control pipe 58, and a deceleration spring 581 is fixedly installed at the end of the speed adjustment bolt 582. The deceleration spring 581 abuts against the sphere 580 to achieve the blockage of the deceleration control pipe 58. When the medium pressure in the inner cavity of the four-way pipe 53 is greater than the elastic force of the deceleration spring 581, the sphere 580 will further compress the deceleration spring 581, and the lubricating oil in the four-way pipe 53 will leak outwards. Since the initial storage pressure of the deceleration spring 581 can be adjusted according to the screwing depth of the speed adjustment bolt 582, by changing the initial compression amount of the deceleration spring 581, the starting pressure of the sphere 580 can be adjusted. Ensure that the strength when the brake push rod 55 extends always remains within a stable range. An inlet groove 530 is provided at the end of the four-way pipe 53 and near the switching push rod 54. Since there are two switching push rods 54, inlet grooves 530 are provided at both ends of the four-way pipe 53. When the switching push rod 54 is pushed outwards by the magnetic force of the electromagnet 56, its piston will cross the inlet groove 530, and the lubricating oil inside the drive gearbox 44 can enter the four-way pipe 53. The reason is that in the actual application process, in order to achieve the lubrication between the bevel gears, a certain amount of lubricating oil is filled inside the drive gearbox 44, and the height of the lubricating oil is generally higher than that of the four-way pipe 53. When the electromagnet 56 attracts the switching push rod 54 outwards and abuts against the corresponding second bevel gear 342 or third bevel gear 343 respectively, the lubricating oil in the drive gearbox 44 can enter the inner cavity of the four-way pipe 53. Then, when braking is required, according to the switching push rod 54 retracting into the four-way pipe 53, the lubricating oil inside the four-way pipe 53 will quickly push the brake push rod 55 outwards and act on the fourth bevel gear 344. As the lubricating oil pressure increases, the pressure of the brake push rod 55 against the fourth bevel gear 344 will also increase. When the pressure is greater than the pressure relief threshold of the sphere 580, the excess lubricating oil in the four-way pipe 53 will be discharged from the deceleration control pipe 58, thus ensuring that the contact pressure between the brake push rod 55 and the fourth bevel gear 344 can be adjusted within a certain range, that is, the braking strength can be adjusted according to the usage requirements. Since the precondition for the brake push rod 55 to brake is that the two switching push rods 54 can retract into the four-way pipe 53, during the loading and unloading stage of the goods 4 from the top of the four-way vehicle 1, by retracting the four-way pipe 53, it is possible to ensure that the auxiliary track wheels 5 / main track wheels 6 are always in the braking state, ensuring that the four-way vehicle 1 will not shift during the loading and unloading of the goods 4 and ensuring the relative accuracy of the loading and unloading position.

[0046] Not only that, through Figure 10 and Figure 11It can also be seen that a filter 57 is threadedly connected to the bottom of the deceleration control pipe 58, and a filter element 571 for filtering and cleaning the lubricating oil is installed in the filter 57. According to the above content, it can be known that the oil in the four-way pipe 53 comes from the lubricating oil in the drive wheel box 44, which is mainly used for lubricating the transmission between bevel gears. However, in actual applications, it can be known that during the meshing of bevel gears, metal impurities will be generated due to wear. During the meshing of the gears, these impurities will further aggravate the wear. To prevent such problems, in this application, a filter 57 for filtering is connected to the deceleration control pipe 58. After the lubricating oil enters the interior of the four-way pipe 53, the excess oil will eventually be discharged from the deceleration control pipe 58. During the discharge stage, the filter 57 filters it, ensuring that the lubricating oil in the drive wheel box 44 is always relatively pure. As a supplement, in actual applications, in order to know whether the filter element 571 has become clogged and needs to be replaced, a pressure limiting valve 572 extending from the bottom of the drive wheel box 44 is fixedly installed at the bottom of the filter 57. The structure of the pressure limiting valve 572 can refer to the deceleration control pipe 58. When the filter element 571 becomes clogged, the lubricating oil in the filter 57 will leak from the pressure limiting valve 572, resulting in lubricating oil appearing on the moving path of the four-way vehicle 1. Operators can judge whether the filter element 571 needs to be replaced based on whether there is oil leakage. For the replacement of the filter element 571, periodic manual maintenance can also be carried out to ensure that it can work properly.

Claims

1. A four-way shuttle full-tooth walking drive assembly for an intensive storage vertical warehouse, characterized in that Comprising: A drive wheel box (44) with a short shaft and a spur gear (36) rotating shaft perpendicular thereto installed inside; Inside the drive wheel box (44), there are a first bevel gear (341), a second bevel gear (342), a third bevel gear (343) and a fourth bevel gear (344) arranged; The first bevel gear (341) is connected to a drive motor (45); The second bevel gear (342) and the fourth bevel gear (344) are installed on the short shaft and mesh with the first bevel gear (341). The rotation of the short shaft drives the main track wheel (6) to operate; The third bevel gear (343) is coaxial with the spur gear (36) rotating shaft and meshes with the fourth bevel gear (344) and the second bevel gear (342) respectively to drive the auxiliary track wheel (5) to rotate.

2. The four-way shuttle full-tooth walking drive assembly for high-density storage vertical warehouse according to claim 1, wherein, The short shaft is in transmission connection with the second bevel gear (342) through a spline (59); there is an engaging push spring (52) between the second bevel gear (342) and the drive wheel box (44). By means of the elastic force of this push spring, the second bevel gear (342) is close to and meshes with the first bevel gear (341); The installation method of the third bevel gear (343) is the same as that of the second bevel gear (342). The elastic force of the engaging push spring (52) enables the third bevel gear (343) to mesh with the third bevel gear (343) / the second bevel gear (342).

3. The four-way shuttle full-tooth walking drive assembly for high-density storage vertical warehouse according to claim 2, wherein At the inner bottom of the drive wheel box (44), a four-way pipe (53) is installed. Inside the pipes thereof facing the second bevel gear (342) and the third bevel gear (343), there are switching ejector rods (54) with metal pistons movably arranged; An electromagnet (56) is coaxially installed at the end of the four-way pipe (53). After being energized, the electromagnet (56) attracts the metal piston, so that the switching ejector rod (54) abuts against the second bevel gear (342) or the third bevel gear (343) to release its engagement with the adjacent gear.

4. The four-way shuttle full-tooth walking drive assembly for high-density storage vertical warehouse according to claim 3, characterized in that, A brake ejector rod (55) is movably installed in the four-way pipe (53) on one side of the fourth bevel gear (344). A return push spring (551) is arranged between the brake ejector rod (55) and the four-way pipe (53).

5. The four-way shuttle full-tooth walking drive assembly for an automated high-density storage warehouse according to claim 4, wherein, At the end of the four-way pipe (53) and on one side of the first bevel gear (341), a deceleration control pipe (58) is installed. The deceleration control pipe (58) includes: a sphere (580), a deceleration spring (581) and a speed adjustment bolt (582); The speed adjustment bolt (582) is threadedly connected inside the deceleration control pipe (58), and a deceleration spring (581) is fixedly installed at the end of the speed adjustment bolt (582). The deceleration spring (581) abuts against the sphere (580) to realize the blocking of the deceleration control pipe (58).

6. The four-way shuttle full-tooth walking drive assembly for high-density storage vertical warehouse according to claim 5, characterized in that, An inlet groove (530) is opened at the end of the four-way pipe (53) and on one side of the switching ejector rod (54).

7. The four-way shuttle full-tooth walking drive assembly for high-density storage vertical warehouse according to claim 5, characterized in that, A filter (57) is threadedly connected to the bottom of the deceleration control pipe (58), and a filter element (571) is installed in the filter (57).

8. The four-way shuttle full-tooth walking drive assembly for high-density storage vertical warehouse according to claim 7, wherein, A pressure limiting valve (572) extending out from the bottom of the drive wheel box (44) is fixedly installed at the bottom of the filter (57).

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