Unmanned vehicle chassis and unmanned vehicle

Patent metadata

Field	Value
Publication number	US-11383776-B2
Application number	US-201816961254-A
Country	US
Kind code	B2
Filing date	Dec 12, 2018
Priority date	Jan 12, 2018
Publication date	Jul 12, 2022
Grant date	Jul 12, 2022

Abstract

An unmanned vehicle chassis includes: a chassis bracket, a front wheel assembly, a middle wheel assembly, and a rear wheel assembly that engage the chassis bracket, a driving unit disposed on the chassis bracket and configured to drive the unmanned vehicle chassis to move, a rocker arm connected to the chassis bracket, where the rocker arm rotates around an axis of the middle wheel assembly, and the middle wheel assembly and the rear wheel assembly are mounted at both ends of the rocker arm, respectively, and connected to the chassis bracket through the rocker arm, and a driving mechanism disposed on the chassis bracket and configured to control the rocker arm to move.

First claim

The invention claimed is:

1. An unmanned vehicle chassis, comprising:
a chassis bracket;
a front wheel assembly, a middle wheel assembly, and a rear wheel assembly that engage the chassis bracket, wherein the middle wheel assembly comprises a left middle wheel, a right middle wheel, a third transmission shaft engaging the left middle wheel, and a fourth transmission shaft engaging the right middle wheel;
a driving unit disposed on the chassis bracket and configured to drive the unmanned vehicle chassis to move;
a rocker arm connected to the chassis bracket, wherein the rocker arm rotates around an axis of the middle wheel assembly, and the middle wheel assembly and the rear wheel assembly are mounted at both ends of the rocker arm, respectively, and connected to the chassis bracket through the rocker arm, the rocker arm comprises a body with a plate-like structure and a rotating shaft generated by extending horizontally from an inner side of the body, the rotating shaft being positioned on a rocker arm bearing seat of the chassis bracket through a bearing, and the third transmission shaft and the fourth transmission shaft being respectively positioned within the rotating shaft of the rocker arm through a respective duplex bearing; and
a driving mechanism disposed on the chassis bracket and configured to control the rocker arm to move.

2. The unmanned vehicle chassis according to claim 1 , wherein the rotating shaft comprises a hollow rotating shaft.

3. The unmanned vehicle chassis according to claim 1 , wherein the front wheel assembly comprises:
a left front wheel;
a right front wheel;
a first transmission shaft engaging the left front wheel; and
a second transmission shaft engaging the right front wheel.

4. The unmanned vehicle chassis according to claim 3 , wherein the driving unit comprises:
a first motor configured to drive the left front wheel; and
a second motor configured to drive the right front wheel.

5. The unmanned vehicle chassis according to claim 1 , comprising:
a third motor disposed on the chassis bracket and configured to drive the third transmission shaft, wherein the third motor comprises a first speed reducer; and
a fourth motor disposed on the chassis bracket and configured to drive the fourth transmission shaft, wherein the fourth motor comprises a second speed reducer.

6. The unmanned vehicle chassis according to claim 1 , wherein the rear wheel assembly comprises:
a left rear wheel;
a right rear wheel;
a fifth transmission shaft engaging the left rear wheel; and
a sixth transmission shaft engaging the right rear wheel, wherein
the fifth transmission shaft and the sixth transmission shaft are assembled at a second end of the body opposite to the rotating shaft.

7. The unmanned vehicle chassis according to claim 6 , further comprising:
a transmission chain or a timing belt disposed on the rocker arm, the transmission chain or the timing belt being configured to cause the left middle wheel, the right middle wheel, the left rear wheel, and the right rear wheel to rotate synchronously.

8. The unmanned vehicle chassis according to claim 1 , wherein the driving mechanism comprises:
a driving motor; and
a first gear set driven by the driving motor.

9. The unmanned vehicle chassis according to claim 8 , further comprising:
a second gear set linked with the first gear set, wherein
the second gear set is disposed at an end of the rotating shaft close to a center of the unmanned vehicle chassis, and the second gear set is configured to drive the rocker arm to rotate around an axis of the middle wheel assembly.

10. The unmanned vehicle chassis according to claim 8 , wherein the rocker arm comprises:
a first rocker arm connecting the left middle wheel and the left rear wheel; and
a second rocker arm connecting the right middle wheel and the right rear wheel, wherein
the driving motor is configured to drive the first rocker arm and the second rocker arm to move synchronously.

11. The unmanned vehicle chassis according to claim 1 , wherein the front wheel assembly comprises an omnidirectional wheel.

12. An unmanned vehicle, comprising:
a vehicle body; and
an unmanned vehicle chassis, wherein the unmanned vehicle chassis comprises:
a chassis bracket;
a front wheel assembly, a middle wheel assembly, and a rear wheel assembly that engage the chassis bracket, wherein the middle wheel assembly comprises a left middle wheel, a right middle wheel, a third transmission shaft engaging the left middle wheel, and a fourth transmission shaft engaging the right middle wheel;
a driving unit disposed on the chassis bracket and configured to drive the unmanned vehicle chassis to move;
a rocker arm connected to the chassis bracket, wherein the rocker arm rotates around an axis of the middle wheel assembly, and the middle wheel assembly and the rear wheel assembly are mounted at both ends of the rocker arm, respectively, and connected to the chassis bracket through the rocker arm, the rocker arm comprises a body with a plate-like structure and a rotating shaft generated by extending horizontally from an inner side of the body, the rotating shaft being positioned on a rocker arm bearing seat of the chassis bracket through a bearing, and the third transmission shaft and the fourth transmission shaft being respectively positioned within the rotating shaft of the rocker arm through a respective duplex bearing; and
a driving mechanism disposed on the chassis bracket and configured to control the rocker arm to move.

13. The unmanned vehicle according to claim 12 , wherein the rotating shaft comprises a hollow rotating shaft.

14. The unmanned vehicle according to claim 13 , wherein the front wheel assembly comprises:
a left front wheel;
a right front wheel;
a first transmission shaft engaging the left front wheel; and
a second transmission shaft engaging the right front wheel.

15. The unmanned vehicle according to claim 14 , wherein the driving unit comprises:
a first motor configured to drive the left front wheel; and
a second motor configured to drive the right front wheel.

Assignees

• Beijing Sankuai Online Tech Co Ltd

Inventors

• Ning Kejun

Classifications

• B60K7/0007

  the motor being electric · CPC title

• B62D63/02 Primary

  Motor vehicles · CPC title

• B60K17/22

  characterised by arrangement, location, or type of main drive shafting, e.g. cardan shaft · CPC title

• B60K17/354

  having separate mechanical assemblies for transmitting drive to the front or to the rear wheels or set of wheels · CPC title

• B62D61/10 Primary

  with more than four wheels {(tractors of the low ground pressure type B62D49/002)} · CPC title