Heavy duty hydraulic drive wheel

Abstract

The application provides a heavy load hydraulic drive wheel. The heavy load hydraulic drive wheel comprises a hydraulic connector and a hydraulic drive assembly; the hydraulic drive assembly comprises a drive wheel vertical forged steel support, a hydraulic motor, a transmission gear set, a drive wheel shaft and a hydraulic drive wheel; the hydraulic connector is arranged on the drive wheel vertical forged steel support; an output end of the hydraulic connector is connected with the hydraulic motor; an output rotating shaft of the hydraulic motor is sleeved with the transmission gear set; the transmission gear set is connected with the drive wheel shaft; the hydraulic drive wheel is sleeved on the drive wheel shaft; and a gear transmission ratio of the transmission gear set is 11.5-25.7. The drive wheel vertical forged steel support provides support for the hydraulic drive wheel, so that the loadable weight of the heavy load hydraulic drive wheel is increased; the hydraulic motor drives the hydraulic drive wheel to rotate by driving the transmission gear set, so that the transmission kinetic energy of the hydraulic drive wheel is increased, thereby increasing the rotating torque of the hydraulic drive wheel, and effectively improving the carrying capacity of the heavy load hydraulic drive wheel.

Description

Technical Field

[0001] This invention relates to the field of heavy-duty technology, and in particular to a heavy-duty hydraulic drive wheel. Background Technology

[0002] With the rapid development of industrial manufacturing, logistics warehousing, and other fields, the demand for heavy-duty AGVs is increasing. In the future, with technological advancements, heavy-duty AGVs will be widely used in ports, mines, heavy equipment, and new energy sectors, achieving closer collaboration with humans, improving handling efficiency and safety, and jointly completing production and logistics tasks. Heavy-duty AGVs are designed to handle the transportation needs of large and heavy goods. They have the capacity to carry high loads and can handle various heavy items, such as machinery and metal structures. Heavy-duty AGVs can operate in various complex environments, including outdoor sites, industrial production lines, and port loading and unloading yards. They can adapt to different terrains and harsh weather conditions, such as rain, snow, high temperatures, and low temperatures. Whether indoors or outdoors, outdoor heavy-duty AGVs can efficiently complete tasks.

[0003] The ability of heavy-duty AGVs to carry heavy loads and operate autonomously and smoothly in complex environments is closely related to their "legs," namely the drive wheels. However, traditional motor-driven wheels require multiple components such as motors and controllers, which reduces the available space in the drive wheels and leads to higher costs. Moreover, traditional motor-driven wheels have lower torque, resulting in poor load-bearing capacity and making them unsuitable for heavy-duty AGVs. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a heavy-duty hydraulic drive wheel that effectively improves load-bearing capacity.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] A heavy-duty hydraulic drive wheel includes: a hydraulic connector and a hydraulic drive assembly; the input end of the hydraulic connector is used to connect to a hydraulic pump to inject hydraulic oil; the hydraulic drive assembly includes a vertical forged steel support for the drive wheel, a hydraulic motor, a transmission gear set, a drive wheel shaft, and a hydraulic drive wheel; the hydraulic connector is disposed on the vertical forged steel support for the drive wheel, the output end of the hydraulic connector is connected to the hydraulic motor, the output shaft of the hydraulic motor is sleeved with the transmission gear set, the transmission gear set is disposed on the vertical forged steel support for the drive wheel, the transmission gear set is connected to the drive wheel shaft, and the hydraulic drive wheel is sleeved on the drive wheel shaft to drive the hydraulic drive wheel to rotate; wherein the gear ratio of the transmission gear set is 11.5 to 25.7.

[0007] In one embodiment, the transmission gear set includes a first transmission gear and a second transmission gear that mesh with each other. The first transmission gear is sleeved on the output shaft of the hydraulic motor, and the second transmission gear is sleeved on the drive wheel shaft. The diameter of the first transmission gear is smaller than the diameter of the second transmission gear.

[0008] In one embodiment, the gear ratio between the first transmission gear and the second transmission gear is 16 to 22.

[0009] In one embodiment, the gear ratio is 19.

[0010] In one embodiment, the hydraulic drive assembly further includes hydraulic hoses that are connected to the hydraulic motor and the hydraulic connector, respectively.

[0011] In one embodiment, the hydraulic drive assembly further includes a hydraulic return pipe, which is connected to the hydraulic motor and the hydraulic connector respectively.

[0012] In one embodiment, the hydraulic return pipe and the hydraulic oil pipe are arranged parallel to each other.

[0013] In one embodiment, the hydraulic drive assembly further includes a limiting block, which is mounted on the vertical forged steel bracket of the drive wheel. The limiting block has a rotating hole, through which the drive wheel shaft rotatably passes.

[0014] In one embodiment, the hydraulic drive assembly further includes a baffle connected to the vertical forged steel support of the drive wheel, the baffle being inclined toward the direction of the hydraulic drive wheel.

[0015] In one embodiment, the hydraulic drive wheel is made of polyurethane.

[0016] Compared with the prior art, the present invention has at least the following advantages:

[0017] The vertical forged steel support for the drive wheel provides support for the hydraulic drive wheel, increasing the weight that the heavy-duty hydraulic drive wheel can bear. In addition, the hydraulic motor drives the hydraulic drive wheel to rotate through the drive transmission gear set, which increases the transmission kinetic energy of the hydraulic drive wheel, thereby increasing the rotational torque of the hydraulic drive wheel and effectively improving the load-bearing capacity of the heavy-duty hydraulic drive wheel. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of a heavy-duty hydraulic drive wheel in one embodiment;

[0020] Figure 2 for Figure 1 A cross-sectional view of the heavy-duty hydraulic drive wheel shown.

[0021] Figure 3 for Figure 1 A schematic diagram of another perspective of the heavy-duty hydraulic drive wheel shown. Detailed Implementation

[0022] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] This invention relates to a heavy-duty hydraulic drive wheel. In one embodiment, the heavy-duty hydraulic drive wheel includes a hydraulic connector and a hydraulic drive assembly; the input end of the hydraulic connector is connected to a hydraulic pump to inject hydraulic oil; the hydraulic drive assembly includes a vertical forged steel support for the drive wheel, a hydraulic motor, a transmission gear set, a drive wheel shaft, and a hydraulic drive wheel; the hydraulic connector is disposed on the vertical forged steel support for the drive wheel, the output end of the hydraulic connector is connected to the hydraulic motor, the output shaft of the hydraulic motor is sleeved on the transmission gear set, the transmission gear set is disposed on the vertical forged steel support for the drive wheel, the transmission gear set is connected to the drive wheel shaft, and the hydraulic drive wheel is sleeved on the drive wheel shaft to drive the hydraulic drive wheel to rotate; wherein the gear ratio of the transmission gear set is 11.5 to 25.7. The vertical forged steel support for the drive wheel provides support for the hydraulic drive wheel, increasing the weight that the heavy-duty hydraulic drive wheel can bear. In addition, the hydraulic motor drives the hydraulic drive wheel to rotate through the drive transmission gear set, which increases the transmission kinetic energy of the hydraulic drive wheel, thereby increasing the rotational torque of the hydraulic drive wheel and effectively improving the load-bearing capacity of the heavy-duty hydraulic drive wheel.

[0026] Please see Figure 1 This is a schematic diagram of the structure of a heavy-duty hydraulic drive wheel according to an embodiment of the present invention.

[0027] One embodiment of the heavy-duty hydraulic drive wheel 10 includes a hydraulic connector 100 and a hydraulic drive assembly 200. The input end of the hydraulic connector 100 is connected to a hydraulic pump to inject hydraulic oil. The hydraulic drive assembly 200 includes a vertical forged steel support 210 for the drive wheel, a hydraulic motor 220, a drive wheel axle 240, and a hydraulic drive wheel 250. The hydraulic connector 100 is mounted on the vertical forged steel support 210 for the drive wheel, and its output end is connected to the hydraulic motor 220. Please refer to the accompanying documentation. Figure 2 The hydraulic drive assembly 200 further includes a transmission gear set 230. The output shaft of the hydraulic motor 220 is sleeved with the transmission gear set 230. The transmission gear set 230 is mounted on the vertical forged steel support 210 of the drive wheel and connected to the drive wheel shaft 240. The hydraulic drive wheel 250 is sleeved on the drive wheel shaft 240 to drive the hydraulic drive wheel 250 to rotate. The gear ratio of the transmission gear set 230 is between 11.5 and 25.7.

[0028] In this embodiment, the vertical forged steel support 210 of the drive wheel provides support for the hydraulic drive wheel 250, thereby increasing the weight that the heavy-duty hydraulic drive wheel 10 can bear. Moreover, the hydraulic motor 220 drives the hydraulic drive wheel 250 to rotate through the drive transmission gear set 230, thereby increasing the transmission kinetic energy of the hydraulic drive wheel 250 and thus increasing the rotational torque of the hydraulic drive wheel 250, effectively improving the load-bearing capacity of the heavy-duty hydraulic drive wheel 10.

[0029] In another embodiment, the hydraulic drive wheel 250 is made of polyurethane, which can reduce damage to the ground, has excellent shock absorption, and allows multiple hydraulic drive wheels 250 to touch the ground simultaneously to prevent slippage.

[0030] In one embodiment, please refer to Figure 2 The transmission gear set 230 includes a first transmission gear 232 and a second transmission gear 234 that mesh with each other. The first transmission gear 232 is sleeved on the output shaft of the hydraulic motor 220, and the second transmission gear 234 is sleeved on the drive wheel shaft 240. The diameter of the first transmission gear 232 is smaller than the diameter of the second transmission gear 234. In this embodiment, the first transmission gear 232 and the second transmission gear 234 set 230 together form a multi-gear transmission structure. The tooth spacing of the first transmission gear 232 is equal to the tooth spacing of the second transmission gear 234, which facilitates the meshing of the first transmission gear 232 and the second transmission gear 234, realizing the transmission between the first transmission gear 232 and the second transmission gear 234. The first transmission gear 232 is sleeved with the output shaft of the hydraulic motor 220, and the second transmission gear 234 is sleeved with the drive wheel shaft 240. Specifically, the first transmission gear 232 is sleeved on the outer wall of the output shaft of the hydraulic motor 220, and the second transmission gear 234 is sleeved on the outer wall of the drive wheel shaft 240. When the hydraulic motor 220 is working, the output shaft of the hydraulic motor 220 drives the second transmission gear 234 by rotating the first transmission gear 232. Then, the second transmission gear 234 drives the drive wheel shaft 240. By adjusting the transmission ratio between the first transmission gear 232 and the second transmission gear 234, that is, under the same tooth pitch, the diameter of the first transmission gear 232 is smaller than the diameter of the second transmission gear 234, so that the number of teeth of the first transmission gear 232 is less than the number of teeth of the second transmission gear 234, which facilitates providing greater torque to the drive wheel shaft 240, thereby improving the load-bearing capacity of the heavy-duty hydraulic drive wheel 10.

[0031] In another embodiment, the gear ratio between the first transmission gear 232 and the second transmission gear 234 is 16 to 22, specifically, the gear ratio is 19.

[0032] In one embodiment, please refer to Figure 1 The hydraulic drive assembly 200 further includes a hydraulic oil pipe 260, which is connected to both the hydraulic motor 220 and the hydraulic connector 100. In this embodiment, one end of the hydraulic oil pipe 260 is connected to the hydraulic motor 220, and the other end is connected to the hydraulic connector 100. The hydraulic oil pipe 260 serves as a conduit between the hydraulic motor 220 and the hydraulic connector 100. The hydraulic pump injects hydraulic oil through the hydraulic connector 100, and the hydraulic connector 100 guides the hydraulic oil into the hydraulic motor 220 through the hydraulic oil pipe 260, facilitating the injection of hydraulic oil into the hydraulic motor 220.

[0033] In another embodiment, please refer to Figure 1 The hydraulic drive assembly 200 further includes a hydraulic return pipe 270, which is connected to both the hydraulic motor 220 and the hydraulic connector 100. In this embodiment, the hydraulic return pipe 270 is located between the hydraulic motor 220 and the hydraulic connector 100. Specifically, one end of the hydraulic return pipe 270 is connected to the return end of the hydraulic motor 220, and the other end is connected to the return end of the hydraulic connector 100. The hydraulic return pipe 270 forms a return path between the hydraulic motor 220 and the hydraulic connector 100, facilitating the formation of a hydraulic circulation path together with the hydraulic oil pipe 260. In another embodiment, the hydraulic return pipe 270 and the hydraulic oil pipe 260 are arranged parallel to each other, reducing the distance between them and effectively reducing the volume of the heavy-duty hydraulic drive wheel 10.

[0034] In one embodiment, please refer to Figure 1The hydraulic drive assembly 200 further includes a limiting block 280, which is mounted on the vertical forged steel support 210 of the drive wheel. The limiting block 280 has a rotating hole 202, through which the drive wheel shaft 240 rotatably passes. In this embodiment, the limiting block 280 is connected to the vertical forged steel support 210 of the drive wheel, and the limiting block 280 is part of the vertical forged steel support 210 of the drive wheel. The rotating hole 202 is formed on the limiting block 280, and a portion of the drive wheel shaft 240 is accommodated within the rotating hole 202. The drive wheel shaft 240 rotates around the rotating hole 202, causing the drive wheel shaft 240 to drive the hydraulic drive wheel 250 to rotate. In another embodiment, there are two limiting blocks 280, which are arranged opposite to each other. The two ends of the drive wheel shaft 240 are respectively inserted into a rotating hole 202. The hydraulic drive wheel 250 is arranged between the two limiting blocks 280 to provide rotation space for the hydraulic drive wheel 250.

[0035] In one embodiment, please refer to the following: Figure 1 and Figure 3 The hydraulic drive assembly 200 further includes a baffle 290, which is connected to the vertical forged steel support 210 of the drive wheel. The baffle 290 is inclined towards the hydraulic drive wheel 250. In this embodiment, the baffle 290 is disposed on the vertical forged steel support 210 of the drive wheel, and corresponds to the hydraulic drive wheel 250. The baffle 290 is inclined towards the hydraulic drive wheel 250. Specifically, in the radial direction of the hydraulic drive wheel 250, the distance between the baffle 290 and the hydraulic drive wheel 250 gradually decreases, so that the baffle 290 provides a barrier for the hydraulic drive wheel 250 to reduce the impact of external foreign objects such as stones on the hydraulic drive wheel 250.

[0036] During the actual loading and handling of the heavy-duty hydraulic drive wheel 10, the hydraulic connector 100 injects hydraulic oil through the hydraulic oil pipe 260. However, the internal space of the hydraulic oil pipe 260 is limited, resulting in a poor hydraulic oil introduction rate, which is not conducive to driving the heavy-duty hydraulic drive wheel 10.

[0037] To increase the hydraulic oil injection volume, please also refer to... Figure 1 and Figure 2The hydraulic drive assembly 200 further includes a transition block 201, which is connected to the vertical forged steel support 210 of the drive wheel. The hydraulic connector 100 is disposed on the side of the transition block 201 opposite to the vertical forged steel support 210 of the drive wheel. The hydraulic connector 100 is movably connected to the transition block 201. The interior of the transition block 201 communicates with the hydraulic connector 100 and is also connected to the hydraulic oil pipe 260.

[0038] In this embodiment, the transition block 201 is connected to both the vertical forged steel support 210 of the drive wheel and the hydraulic connector 100. Specifically, the transition block 201 is fixedly connected to the vertical forged steel support 210 of the drive wheel, and the hydraulic connector 100 is rotatably connected to the transition block 201. For example, the hydraulic connector 100 is connected to the transition block 201 via a ball bearing, allowing the hydraulic connector 100 to rotate within the transition block 201. When the heavy-duty hydraulic drive wheel 10 turns, the hydraulic connector 100 remains relatively stationary relative to the hydraulic pump, reducing the impact of the hydraulic oil pipe 260. The transition block 201 has an internal accommodating space, and its interior communicates with both the hydraulic connector 100 and the hydraulic oil pipe 260. The transition block 201 serves as a temporary storage area for hydraulic oil, allowing the hydraulic oil injected by the hydraulic pump to be centrally stored within the transition block 201, providing sufficient hydraulic oil for the hydraulic oil pipe 260 and effectively increasing the hydraulic oil injection volume.

[0039] Further, please refer to Figure 1 The heavy-duty hydraulic drive wheel 10 also includes a steering assembly 300, which includes a steering motor 310, a slewing support wheel 320, and a steering wheel 330. The steering motor 310 is connected to the vertical forged steel bracket 210 of the drive wheel, and the shaft of the steering motor 310 is connected to the steering wheel 330. The slewing support wheel 320 is fixed on the transition block 201, and the slewing support wheel 320 is meshed with the steering wheel 330.

[0040] In this embodiment, the steering motor 310 serves as the rotation source for the steering wheel 330, providing power for its rotation. Driven by the steering wheel 330, the slewing support wheel 320 rotates, causing the hydraulic drive wheel 250 to steer. This facilitates adjustment of the direction of movement of the hydraulic drive wheel 250, i.e., by adjusting the number of teeth on the steering motor 310 to change the rotation angle of the hydraulic drive wheel 250. For example, the steering motor 310 is a stepper motor for precise steering control. The steering motor 310 is located on the vertical forged steel bracket 210 of the drive wheel. Specifically, the steering motor 310 is located inside the hydraulic motor 220, avoiding an increase in the turning radius of the hydraulic drive wheel 250, making the steering of the hydraulic drive wheel 250 more convenient and precise.

[0041] Furthermore, please refer to Figure 1 The steering assembly 300 also includes a ball bearing 340. The slewing support wheel 320 has a bearing mounting hole 302. The ball bearing 340 is movably disposed in the bearing mounting hole 302. The ball bearing 340 is sleeved with the hydraulic connector 100. The ball bearing 340 also has a plurality of heat dissipation holes 304, which are evenly distributed on the ball bearing 340.

[0042] In this embodiment, the ball bearing 340 is located within the bearing mounting hole 302, meaning at least a portion of the ball bearing 340 is located within the bearing mounting hole 302. This also means the slewing support wheel 320 is sleeved on the outer wall of the ball bearing 340. The ball bearing 340 is connected to the hydraulic connector 100, allowing the hydraulic connector 100 to be rotatably connected to the slewing support wheel 320 via the ball bearing 340. The slewing support wheel 320 is fixed to the transition block 201. When the slewing support wheel 320 is driven to rotate by the steering wheel 330, the ball bearing 340 remains relatively stationary. This means the ball bearing 340 and the hydraulic connector 100 remain relatively stationary, ensuring synchronization between the hydraulic connector 100 and the hydraulic pump. This prevents rotation of the contact position between the hydraulic connector 100 and the hydraulic pump, reducing the likelihood of damage to the hydraulic connector 100. The heat dissipation holes 304 are located on the ball bearing 340, and a plurality of the heat dissipation holes 304 are evenly distributed on the ball bearing 340, so that the heat generated when the ball bearing 340 and the slewing support wheel 320 rotate relative to each other is discharged through the heat dissipation holes 304, effectively improving the overall heat dissipation effect of the heavy-duty hydraulic drive wheel 10.

[0043] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A heavy-duty hydraulic drive wheel, characterized in that, include: A hydraulic connector, the input end of which is used to connect to a hydraulic pump to inject hydraulic oil; A hydraulic drive assembly includes a vertical forged steel support for a drive wheel, a hydraulic motor, a transmission gear set, a drive wheel shaft, and a hydraulic drive wheel. A hydraulic connector is mounted on the vertical forged steel support for the drive wheel, and its output end is connected to the hydraulic motor. The output shaft of the hydraulic motor is sleeved with the transmission gear set, which is also mounted on the vertical forged steel support for the drive wheel and connected to the drive wheel shaft. The hydraulic drive wheel is sleeved on the drive wheel shaft to drive the hydraulic drive wheel to rotate. The gear ratio of the transmission gear set is between 11.5 and 25.

7. The hydraulic drive assembly also includes a transition block and hydraulic oil pipes. The hydraulic oil pipes are connected to the hydraulic motor and the hydraulic connector, respectively. The transition block is connected to the vertical forged steel support of the drive wheel. The hydraulic connector is located on the side of the transition block away from the vertical forged steel support of the drive wheel. The hydraulic connector is movably connected to the transition block. The interior of the transition block is connected to the hydraulic connector, and the interior of the transition block is also connected to the hydraulic oil pipes.

2. The heavy-duty hydraulic drive wheel according to claim 1, characterized in that, The transmission gear set includes a first transmission gear and a second transmission gear that mesh with each other. The first transmission gear is sleeved on the output shaft of the hydraulic motor, and the second transmission gear is sleeved on the drive wheel shaft. The diameter of the first transmission gear is smaller than the diameter of the second transmission gear.

3. The heavy-duty hydraulic drive wheel according to claim 2, characterized in that, The gear ratio between the first transmission gear and the second transmission gear is 16 to 22.

4. The heavy-duty hydraulic drive wheel according to claim 3, characterized in that, The gear ratio is 19.

5. The heavy-duty hydraulic drive wheel according to claim 1, characterized in that, The hydraulic drive assembly also includes a hydraulic return pipe, which is connected to the hydraulic motor and the hydraulic connector respectively.

6. The heavy-duty hydraulic drive wheel according to claim 5, characterized in that, The hydraulic return pipe and the hydraulic oil pipe are arranged parallel to each other.

7. The heavy-duty hydraulic drive wheel according to claim 1, characterized in that, The hydraulic drive assembly also includes a limiting block, which is mounted on the vertical forged steel bracket of the drive wheel. The limiting block has a rotating hole, through which the drive wheel shaft rotatably passes.

8. The heavy-duty hydraulic drive wheel according to claim 1, characterized in that, The hydraulic drive assembly also includes a baffle plate connected to the vertical forged steel support of the drive wheel, and the baffle plate is inclined toward the direction of the hydraulic drive wheel.

9. The heavy-duty hydraulic drive wheel according to claim 1, characterized in that, The hydraulic drive wheel is made of polyurethane.

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