Controllable double-wheel bearing wheel assembly

Abstract

The utility model discloses a controllable double-wheel bearing wheel assembly, and belongs to the technical field of bearing wheels. The speed reducer is fixed on the connecting plate, the steering motor and the rotary pinion are connected with the speed reducer, the wheels are installed on the connecting plate through pin shafts, the inner ring of the rotary gear is fixed on the connecting plate, the outer ring of the rotary gear is fixed on a frame, and the outer ring of the rotary gear is fixed on the frame. The outer ring of the rotary gear is in meshed connection with the rotary pinion, and after the rotary gear and the whole vehicle are installed, the steering motor is arranged in the vertical direction, so that the motor is parallel to the vertical plate of the connecting plate, only a small gap is reserved, and the rotary radius of the controllable double-wheel bearing wheel assembly is greatly reduced; by adopting a double-wheel form, rolling friction is generated during double-wheel steering, sliding friction is generated during single-wheel steering, the friction coefficient of the double wheels is small, and almost no damage is generated to the ground during steering; and moreover, the double-wheel bearing capacity is high, the radial area is large, the trafficability to pothole terrains is good, and normal running of the wheels is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field related to load-bearing wheels, and in particular to a controllable double-wheel load-bearing wheel assembly. Background Art

[0002] As the steering and load-bearing component of electric industrial vehicles, the controllable double-wheel load-bearing wheel assembly integrates key components such as steering motors, wheels, slewing gears, and connecting plates, which determine the steering performance of the entire vehicle. Currently, such products in existing technologies are single and mostly single-wheel. When single-wheel steering, the sliding friction coefficient is large, which is not flexible and damages the ground. Summary of the invention

[0003] The utility model provides a controllable double-wheel load-bearing wheel assembly, aiming to solve the above technical defects.

[0004] The specific technical solutions provided by the utility model are as follows:

[0005] The utility model provides a controllable double-wheel load-bearing wheel assembly comprising a connecting plate, a reducer fixed on the connecting plate, a steering motor and a slewing pinion connected to the reducer, a wheel mounted on the connecting plate by a pin shaft, and a slewing gear with an inner ring fixed on the connecting plate, wherein the outer ring of the slewing gear is fixed on a vehicle frame, and the outer ring of the slewing gear is meshedly connected with the slewing pinion.

[0006] Optionally, the reducer and the steering motor are both located below the connecting plate, the wheel is located below the connecting plate, and the wheel and the reducer are arranged side by side.

[0007] Optionally, the rotating gear and the rotating pinion are both located above the connecting plate, and the inner ring of the rotating gear is fixedly connected to the connecting plate.

[0008] Optionally, the inner ring of the rotating gear is lower in height than the outer ring of the rotating gear, and the inner ring of the rotating gear is rotatably connected relative to the outer ring of the rotating gear.

[0009] Optionally, two wheels are arranged on the connecting plate, a shaft sleeve is arranged between the two wheels, and the pin passes through the connecting plate to fix the wheels under the connecting plate.

[0010] Optionally, a zero position detection device and an electrical limit device are provided below the connecting plate.

[0011] The utility model has the following beneficial technical effects:

[0012] The embodiment of the utility model provides a controllable two-wheel load-bearing wheel assembly including a connecting plate, a reducer fixed on the connecting plate, a steering motor and a slewing pinion connected to the reducer, a wheel installed on the connecting plate by a pin shaft, and a slewing gear with an inner ring fixed on the connecting plate, wherein the outer ring of the slewing gear is fixed on the frame, and the outer ring of the slewing gear is meshed and connected with the slewing pinion. After being installed on the whole vehicle, the steering motor is arranged in the vertical direction so that the motor is parallel to the vertical plate of the connecting plate with only a small gap, which greatly reduces the turning radius of the controllable two-wheel load-bearing wheel assembly; when the two-wheel form is adopted, the two-wheel steering is rolling friction, and when the single-wheel steering is sliding friction, the friction coefficient of the two wheels is small, and there is almost no damage to the ground when steering; and the two wheels have high load-bearing capacity and large radial area, and good passability for potholes, ensuring the normal driving of the wheels. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 It is a front view structural schematic diagram of a controllable double-wheel load-bearing wheel assembly according to an embodiment of the utility model;

[0015] Figure 2 It is a side structural schematic diagram of a controllable double-wheel load-bearing wheel assembly according to an embodiment of the utility model;

[0016] Figure 3 The figure is a schematic top view of the structure of a controllable double-wheel load-bearing wheel assembly according to an embodiment of the utility model. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] The following will be combined Figure 1~Figure 3 A controllable double-wheel load-bearing wheel assembly according to an embodiment of the utility model is described in detail.

[0019] refer to Figure 1 , Figure 2 and Figure 3As shown, a controllable dual-wheel load-bearing wheel assembly provided by the embodiment of the utility model includes a connecting plate 1, a reducer 2 fixed on the connecting plate 1, a steering motor 3 and a slewing pinion 4 connected to the reducer 2, a wheel 6 mounted on the connecting plate 1 by a pin 5, and a slewing gear 7 whose inner ring is fixed on the connecting plate 1, wherein the outer ring of the slewing gear 7 is fixed on the vehicle frame, and the outer ring of the slewing gear 7 is meshedly connected with the slewing pinion 4. The outer ring of the slewing gear 7 is rigidly connected to the vehicle frame; the inner ring of the slewing gear 7 is connected to the connecting plate, and the pin 5 passes through the through hole of the vertical plate on the connecting plate 1 and passes through the wheel 6, so that the wheel 6 is fixed on the connecting plate 1 to realize rotation. The steering motor 3 is installed on the reducer 2 to form a whole. The reducer 2 is located on the lower side of the connecting plate. The output shaft of the reducer 2 passes through the through hole on one side of the connecting plate 1. A rotating pinion 4 is installed on the reducer. The steering motor 3 rotates to drive the rotating pinion 4 installed on the reducer 2. The rotating pinion 4 is engaged with the outer ring of the rotating gear 7 to drive the connecting plate to rotate. The connecting plate rotates in a circle under the action of the steering pinion to realize the vehicle steering function.

[0020] refer to Figure 1 and Figure 2 As shown, the reducer 2 and the steering motor 3 of the controllable two-wheel load-bearing wheel assembly provided by the embodiment of the utility model are both located below the connecting plate 1, and the wheel 6 is located below the connecting plate 1, and the wheel 6 and the reducer 2 are arranged side by side. The slewing gear 7 and the slewing pinion 4 are both located above the connecting plate 1, and the inner ring of the slewing gear 7 is fixedly connected to the connecting plate 1. In this way, after the controllable two-wheel load-bearing wheel assembly is installed on the whole vehicle, the steering motor is arranged in the vertical direction through structural optimization, so that the motor is parallel to the vertical plate of the connecting plate with only a small gap, which greatly reduces the turning radius of the controllable two-wheel load-bearing wheel assembly.

[0021] refer to Figure 1 and Figure 3 As shown, the height of the inner ring of the slewing gear 7 is lower than the outer ring of the slewing gear, which can avoid the inner ring interference of the slewing gear after the slewing gear is rigidly connected to the frame. The inner ring of the slewing gear 7 can be rotatably connected relative to the outer ring of the slewing gear 7. Two wheels 6 are arranged on the connecting plate 1, and a shaft sleeve is arranged between the two wheels 6. The pin 5 passes through the connecting plate 1 to fix the wheel under the connecting plate. When the double-wheel form is adopted, the double-wheel steering is rolling friction, and when the single-wheel steering is sliding friction, the double-wheel friction coefficient is small, and there is almost no damage to the ground when steering. The double-wheel has a high load-bearing capacity and a large radial area. It has good passability on potholes and terrains, ensuring the normal driving of the wheels.

[0022] refer to Figure 1As shown, a zero position detection device 8 and an electrical limit device 9 are provided below the connecting plate 1. The zero position detection device 8 and the electrical limit device 9 are used for position feedback and are controlled by an encoder to realize the automatic control function of industrial vehicle steering. For example, the zero position detection device 8 and the electrical limit device 9 can be a zero position detection switch and an electrical limit switch, respectively.

[0023] The embodiment of the utility model provides a controllable two-wheel load-bearing wheel assembly including a connecting plate, a reducer fixed on the connecting plate, a steering motor and a slewing pinion connected to the reducer, a wheel installed on the connecting plate by a pin shaft, and a slewing gear with an inner ring fixed on the connecting plate, wherein the outer ring of the slewing gear is fixed on the frame, and the outer ring of the slewing gear is meshed and connected with the slewing pinion. After being installed on the whole vehicle, the steering motor is arranged in the vertical direction so that the motor is parallel to the vertical plate of the connecting plate with only a small gap, which greatly reduces the turning radius of the controllable two-wheel load-bearing wheel assembly; when the two-wheel form is adopted, the two-wheel steering is rolling friction, and when the single-wheel steering is sliding friction, the friction coefficient of the two wheels is small, and there is almost no damage to the ground when steering; and the two wheels have high load-bearing capacity and large radial area, and good passability for potholes, ensuring the normal driving of the wheels.

[0024] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if these modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A controllable double-wheel load-bearing wheel assembly, characterized in that: The controllable two-wheel load-bearing wheel assembly includes a connecting plate, a reducer fixed on the connecting plate, a steering motor and a rotating pinion connected to the reducer, a wheel installed on the connecting plate by a pin shaft, and a rotating gear with an inner ring fixed on the connecting plate, wherein the outer ring of the rotating gear is fixed on the frame, and the outer ring of the rotating gear is meshed and connected with the rotating pinion.

2. The controllable double-wheel load-bearing wheel assembly according to claim 1, characterized in that: The speed reducer and the steering motor are both located below the connecting plate, the wheel is located below the connecting plate, and the wheel and the speed reducer are arranged side by side.

3. The controllable double-wheel load-bearing wheel assembly according to claim 2, characterized in that: The rotating gear and the rotating pinion are both located above the connecting plate, and the inner ring of the rotating gear is fixedly connected to the connecting plate.

4. The controllable double-wheel load-bearing wheel assembly according to claim 3, characterized in that: The inner ring of the rotating gear is lower in height than the outer ring of the rotating gear, and the inner ring of the rotating gear is rotatably connected relative to the outer ring of the rotating gear.

5. The controllable double-wheel load-bearing wheel assembly according to claim 3, characterized in that: The connecting plate is provided with two wheels, a shaft sleeve is provided between the two wheels, and the pin passes through the connecting plate to fix the wheels below the connecting plate.

6. The controllable double-wheel load-bearing wheel assembly according to claim 3, characterized in that: A zero position detection device and an electrical limit device are arranged below the connecting plate.

Images