Double-wheel vertical steering wheel
By setting the gear transmission and steering gears in the sealing cavity and 360° steering is achieved using a planetary differential, the existing dual-wheel vertical steering wheel is insufficient lubrication and motor cable damage, achieving unlimited steering and space savings.
Patent Information
- Application Number
- CN202422139652.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-09-02
AI Technical Summary
The existing dual-wheel vertical steering gears are exposed, resulting in insufficient lubrication, grease dripping causes walking slippage and ground pollution, motor cables are prone to damage and cannot achieve 360° unlimited steering.
A two-wheel vertical steering wheel structure is designed, and the gear transmission mechanism and steering gear are arranged in the sealing chamber, and the transmission motor and steering motor are arranged on the top of the mounting shell. A planetary differential is used to achieve 360° steering to avoid grease spillage and pulling of motor cables.
The gears are fully lubricated, avoid grease dripping and motor cable damage, save space, and achieve 360° unlimited steering.
Smart Images
Figure CN223253068U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of AGV steering wheels, in particular to a double-wheel vertical steering wheel. Background Art
[0002] Currently, dual-wheel vertical steering wheels are a common design for AGVs. However, existing dual-wheel vertical steering wheels have exposed steering gears, which not only lacks adequate lubrication, affecting transmission, but also easily drips grease onto the ground, causing the drive unit to slip and contaminating the ground, making them unsuitable for use in the food and medical industries. Furthermore, to adapt to the left and right swings of the existing dual wheels, the travel motors also need to swing and rotate, pulling back and forth on the motor cables, which not only easily damages the cables but also takes up a large amount of space. Furthermore, existing dual-wheel vertical steering wheels cannot achieve 360° unlimited steering. Utility Model Content
[0003] In order to solve the above technical problems, the utility model provides a two-wheel vertical steering wheel, which avoids the steering and transmission gears from being exposed, ensures the full lubrication of the gears, prevents grease from overflowing and dripping onto the road surface causing slipping when walking, avoids cable damage, and realizes 360° unlimited steering.
[0004] The technical solution adopted by the utility model to solve its technical problems is:
[0005] A two-wheel vertical steering wheel comprises a mounting plate, an outer gear ring, a two-wheel bracket, a mounting shell and a planetary differential, wherein the outer gear ring is rotatably inserted into the mounting plate, the two-wheel bracket is fixed to the bottom surface of the outer gear ring, the planetary differential is connected to the two-wheel bracket, and drive wheels are respectively provided at both ends of the planetary differential; the mounting shell cover is provided on the mounting plate and covers the outer gear ring therein, a sealed cavity is formed between the mounting shell, the mounting plate and the two-wheel bracket, a transmission motor and a steering motor are vertically provided on the top of the mounting shell, the transmission motor is connected to the planetary differential through a gear transmission mechanism, the output shaft of the steering motor is connected to a steering gear, the steering gear is meshed with the outer gear ring, and the gear transmission mechanism and the steering gear are both provided in the sealed cavity.
[0006] Preferably, the gear transmission mechanism includes a passive gear rotatably plugged into the dual-wheel bracket, a transmission shaft is plugged into the passive gear, and the lower end of the transmission shaft is connected to the planetary differential;
[0007] A driving gear is provided on the output shaft of the transmission motor, and the driving gear is meshed with the driven gear.
[0008] Preferably, the planetary differential includes a frame, a first bevel gear, a second bevel gear and a planetary gear system. The planetary gear system is arranged in the frame. The drive wheels are respectively provided on the output shafts at both ends of the planetary gear system. The first bevel gear is connected to the transmission shaft and meshes with the second bevel gear. The second bevel gear is connected to the frame.
[0009] Preferably, the double-wheel bracket includes a bracket body connected to the outer gear ring, and two connecting ears are provided on the bottom surface of the bracket body. The outer wall of the frame is provided with two connecting rods corresponding to the two connecting ears, and the other end of the connecting rod is connected to the connecting ear.
[0010] Preferably, a mounting seat protruding upward is provided in the middle of the bracket body, a bearing is provided in the mounting seat, and the passive gear is plugged into the inner ring of the bearing.
[0011] Preferably, the output end of the steering motor is connected to a reducer, and the steering gear is installed at the output end of the reducer.
[0012] Preferably, the mounting shell is provided with an oil plug communicating with the sealing cavity.
[0013] Preferably, the driving wheel includes a hub and a rim, and the rim is arranged on the outside of the hub.
[0014] Preferably, an encoder for detecting the rotation angle is provided on the output shaft of the steering motor or the steering gear.
[0015] Compared with the prior art, the dual-wheel vertical steering wheel of the present invention has the following advantages: by placing the mounting shell cover on the mounting plate and enclosing the outer gear ring therein, a sealed chamber is formed between the mounting shell, the mounting plate, and the dual-wheel bracket, and the gear transmission mechanism and the steering gear are both arranged in the sealed chamber, so that the steering and transmission gears are both arranged in the sealed chamber, avoiding exposure of the steering and transmission gears, ensuring sufficient lubrication of the gears, and preventing grease from spilling onto the road surface and causing slipping during driving. At the same time, the transmission motor and the steering motor are both arranged on the top of the mounting shell, and the steering and driving of the driving wheel are driven by the gears. The motor does not need to swing or rotate, avoiding damage caused by pulling the motor cable back and forth, thereby providing good protection for the cable and saving space. In addition, the steering of the driving wheel is achieved by the steering gear meshing with the outer gear ring. Since the outer gear ring can achieve 360° rotation, 360° unlimited steering of the steering wheel is achieved. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic structural diagram of the double-wheel vertical steering wheel of the present invention.
[0017] Figure 2This is a structural schematic diagram of the dual-wheel vertical steering wheel of the present invention with the mounting shell removed.
[0018] Figure 3 It is a cross-sectional view of the double-wheel vertical steering wheel of the present invention.
[0019] Figure 4 This is a partial view of the dual-wheel vertical steering wheel of the present invention.
[0020] Among them: 1-mounting plate, 2-outer gear ring, 3-double wheel bracket, 31-bracket body, 32-connecting ear, 33-mounting seat, 4-planetary differential, 41-first bevel gear, 42-second bevel gear, 43-connecting rod, 5-driving wheel, 6-mounting shell, 7-transmission motor, 8-steering motor, 9-gear transmission mechanism, 91-passive gear, 92-transmission shaft, 93-driving gear, 10-steering gear, 20-oil plug. DETAILED DESCRIPTION
[0021] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0022] like Figure 1-2 As shown, a preferred embodiment of the present invention, a dual-wheel vertical steering wheel, includes a mounting plate 1, an outer ring gear 2, a dual-wheel bracket 3, a mounting housing 6, and a planetary differential 4. The bottom surface of the mounting plate 1 is connected to the AGV body. The outer ring gear 2 is rotatably plugged into the mounting plate 1. The mounting plate 1 is annular, and the outer ring gear 2 can rotate about the centerline of the mounting plate 1. The dual-wheel bracket 3 is fixed to the bottom surface of the outer ring gear 2. The planetary differential 4 is connected to the dual-wheel bracket 3, and drive wheels 5 are respectively provided at each end of the planetary differential 4; the drive wheels 5 include a hub and a rim, and the rim is arranged on the outside of the hub.
[0023] The mounting shell 6 is covered on the mounting plate 1 and covers the outer ring gear 2 therein. A sealed cavity is formed between the mounting shell 6, the mounting plate 1 and the dual-wheel bracket 3. A transmission motor 7 and a steering motor 8 are vertically provided on the top of the mounting shell 6. The transmission motor 7 is connected to the planetary differential 4 through a gear transmission mechanism 9. The output shaft of the steering motor 8 is connected to a steering gear 10. The steering gear 10 is engaged with the outer ring gear 2. The gear transmission mechanism 9 and the steering gear 10 are both arranged in the sealed cavity.
[0024] The dual-wheel vertical steering wheel based on the above technical features is constructed by placing the mounting shell 6 on the mounting plate 1 and enclosing the outer gear ring 2 therein. At the same time, a sealed chamber is formed between the mounting shell 6, the mounting plate 1 and the dual-wheel bracket 3. The gear transmission mechanism 9 and the steering gear 10 are both located in the sealed chamber, so that the steering and transmission gears are both located in the sealed chamber, avoiding exposure of the steering and transmission gears, ensuring sufficient lubrication of the gears, and also avoiding grease overflowing and dripping onto the road surface and causing slipping when walking. At the same time, the transmission motor 7 and the steering motor 8 are both located on the top of the mounting shell 6. The steering and movement of the driving wheel 5 are driven by the gears. The motor does not need to swing or rotate, avoiding damage caused by pulling the motor cable back and forth, thereby providing good protection for the cable and saving space. In addition, the steering of the driving wheel 5 is meshed with the outer gear ring 2 through the steering gear 10. Since the outer gear ring 2 can achieve 360° rotation, 360° unlimited steering of the steering wheel is achieved.
[0025] like Figure 3 As shown, in this embodiment, the gear transmission mechanism 9 includes a driven gear 91 rotatably connected to the dual-wheel bracket 3. A drive shaft 92 is connected to the driven gear 91, the lower end of which is connected to the planetary differential 4. A driving gear 93 is provided on the output shaft of the transmission motor 7, meshing with the driven gear 91. The planetary differential 4 comprises a frame, a first bevel gear 41, a second bevel gear 42, and a planetary gear system. The planetary gear system is disposed within the frame, with the drive wheels 5 provided on the output shafts at both ends of the planetary gear system. The first bevel gear 41 is connected to the drive shaft 92 and meshes with the second bevel gear 42, which is connected to the frame. The rotation of the transmission motor 7 drives the driving gear 93 to drive the driven gear 91, which in turn drives the drive shaft 92. The drive shaft 92 drives the first bevel gear 41 to drive the second bevel gear 42, which in turn drives the drive wheels 5 at both ends through the planetary gear system.
[0026] like Figure 4 As shown, the dual-wheel bracket 3 includes a bracket body 31 connected to the outer gear ring 2. Two connecting ears 32 are provided on the bottom surface of the bracket body 31. Two connecting rods 43 are provided on the outer wall of the frame, corresponding to the two connecting ears 32. The other ends of the connecting rods 43 are connected to the connecting ears 32. At the same time, an upwardly protruding mounting seat 33 is provided in the middle of the bracket body 31. A bearing is provided in the mounting seat 33. The driven gear 91 is inserted into the inner ring of the bearing, thereby enabling the driven gear 91 to drive the rotation of the transmission shaft 92.
[0027] In this embodiment, the output end of the steering motor 8 is connected to a reducer, and the steering gear 10 is mounted on the output end of the reducer to ensure the output speed of the steering motor 8. At the same time, to facilitate detection of the rotation angle, an encoder for detecting the rotation angle is provided on the output shaft of the steering motor 8 or on the steering gear 10.
[0028] In this embodiment, an oil plug 20 communicating with the sealing cavity is provided on the mounting shell 6 to facilitate adding lubricating oil into the sealing cavity. The oil plug 20 is preferably a hexagonal oil plug.
[0029] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and replacements can be made without departing from the technical principles of the present invention. These improvements and replacements should also be regarded as the scope of protection of the present invention.
Claims
1. A dual-wheel vertical steering wheel, characterized by: The gearbox is a gearbox that is mounted on a plurality of wheels and has a plurality of control wheels, and the plurality of control wheels are mounted on the plurality of wheels. The gearbox is a gearbox that is mounted on a plurality of wheels and has a plurality of control wheels. The plurality of control wheels are mounted on a plurality of wheels and have a plurality of control wheels.
2. The twin-wheel vertical steering wheel according to claim 1, characterized in that: The gear transmission mechanism includes a driven gear rotatably plugged into the dual-wheel bracket, a transmission shaft is plugged into the driven gear, and the lower end of the transmission shaft is connected to the planetary differential; A driving gear is provided on the output shaft of the transmission motor, and the driving gear is meshed with the driven gear.
3. The twin-wheel vertical steering wheel according to claim 2, characterized in that: The planetary differential includes a frame, a first bevel gear, a second bevel gear and a planetary gear system. The planetary gear system is arranged in the frame. The drive wheels are respectively provided on the output shafts at both ends of the planetary gear system. The first bevel gear is connected to the transmission shaft and meshes with the second bevel gear. The second bevel gear is connected to the frame.
4. The twin-wheel vertical steering wheel according to claim 3, characterized in that: The double-wheel bracket includes a bracket body connected to the outer gear ring, and two connecting ears are provided on the bottom surface of the bracket body. The outer wall of the frame is provided with two connecting rods corresponding to the two connecting ears, and the other end of the connecting rod is connected to the connecting ear.
5. The twin-wheel vertical steering wheel according to claim 4, characterized in that: A mounting seat protruding upward is provided in the middle of the bracket body, a bearing is provided in the mounting seat, and the passive gear is plugged into the inner ring of the bearing.
6. The dual-wheel vertical steering wheel according to any one of claims 1 to 5, characterized in that: The output end of the steering motor is connected to a reducer, and the steering gear is installed at the output end of the reducer.
7. The dual-wheel vertical steering wheel according to any one of claims 1 to 5, characterized in that: The mounting shell is provided with an oil plug which is in communication with the sealing cavity.
8. The dual-wheel vertical steering wheel according to any one of claims 1 to 5, characterized in that: The driving wheel includes a hub and a rim, and the rim is arranged on the outer side of the hub.
9. The dual-wheel vertical steering wheel according to any one of claims 1 to 5, characterized in that: An encoder for detecting a rotation angle is provided on the output shaft of the steering motor or the steering gear.