Track travelling device

Patent metadata

Field	Value
Publication number	US-12466449-B2
Application number	US-202017772050-A
Country	US
Kind code	B2
Filing date	Oct 27, 2020
Priority date	Nov 5, 2019
Publication date	Nov 11, 2025
Grant date	Nov 11, 2025

Abstract

The present disclosure relates to a track travelling device, comprising a vehicle body, a connection device and two groups of wheels. The two groups of wheels are disposed on two sides of the vehicle body respectively and the wheels comprise rims matched with tracks. One end of the connection device is connected to a bottom of the vehicle body and the other end of the connection device is connected to the wheels. The connection device comprises an elastic member and the elastic member is configured to be deformed under the gravity of the vehicle body to adjust distances between the rims of the two groups of wheels. Under the gravity of the vehicle body, the track travelling device of the present disclosure can closely attach the rims of the wheels to side surfaces of the tracks, thereby preventing the vehicle body from swaying side to side. Meanwhile, the connection device comprises the elastic member for adaption to a change of a track gauge.

First claim

The invention claimed is:

1 . A track travelling device, comprising:
a vehicle body; two groups of wheels disposed on two sides of the vehicle body respectively, each of the wheels comprising a rim configured to abut against a track; and a connection device comprising an elastic member, wherein the elastic member is located below the vehicle body, an upper end of the elastic member is connected to a bottom of the vehicle body, a lower end of the elastic member is connected to the wheels, and the lower end of the elastic member connected to the wheels is far away from a symmetry plane between two of the tracks relative to the upper end of the elastic member connected to the bottom of the vehicle body, such that the elastic member is configured to be deformed under the gravity of the vehicle body to adjust distances between the rims of the two groups of wheels, and a direction of a force applied by the elastic member to the wheels is a direction extending from the vehicle body toward a direction away from the symmetry plane between the two of the tracks and inclined relative to the symmetry plane.

2 . The track travelling device according to claim 1 , wherein an included angle between the direction of the force and the symmetry plane is 30° to 60°.

3 . The track travelling device according to claim 1 , wherein the directions of the forces applied to the corresponding wheels by two of the elastic members corresponding to two of the wheels arranged symmetrically with respect to the symmetry plane are symmetrical with respect to the symmetry plane.

4 . The track travelling device according to claim 1 , wherein each of the wheels is connected to the vehicle body through a separate connection device.

5 . The track travelling device according to claim 1 , wherein each separate connection device comprises a plurality of the elastic members which are arranged in parallel.

6 . The track travelling device according to claim 1 , wherein the connection device further comprises a first connection plate connected to the wheels and a second connection plate connected to the bottom of the vehicle body, the elastic member is disposed between the first connection plate and the second connection plate.

7 . The track travelling device according to claim 6 , wherein the connection device further comprises a guide device configured to guide a deformation of the elastic member.

8 . The track travelling device according to claim 7 , wherein the guide device comprises a guide shaft, the elastic member sleeves an outer periphery of the guide shaft, and the guide shaft is arranged inclinedly with respect to a symmetry plane between two of the tracks.

9 . The track travelling device according to claim 8 , wherein a first end of the guide shaft is connected to the first connection plate, the second connection plate is provided with a slideway, and a second end of the guide shaft is inserted into the slideway.

10 . The track travelling device according to claim 9 , wherein the guide device further comprises a sleeve disposed in the slideway, and the second end of the guide shaft is inserted into the sleeve.

11 . The track travelling device according to claim 9 , wherein an end of the slideway away from the first connection plate is provided with an opening, and the guide device further comprises a flexible pad which is mounted at the second end of the guide shaft.

12 . The track travelling device according to claim 9 , wherein the second connection plate is provided with an accommodation cavity communicated with the slideway.

13 . The track travelling device according to claim 8 , wherein the first connection plate comprises a vertical plate disposed vertically and a horizontal plate disposed horizontally, the vertical plate is connected to the horizontal plate, the vertical plate is connected to the wheels, and the horizontal plate is connected to the guide shaft.

14 . The track travelling device according to claim 13 , wherein the horizontal plate comprises a mounting portion, which has a surface parallel to an end face of the guide shaft.

15 . The track travelling device according to claim 6 , further comprising a driving device, which is mounted on the first connection plate, drivingly connected to the wheels, and disposed in parallel with the track.

16 . The track travelling device according to claim 1 , further comprising an anti-collision bar mounted on a front side and/or a rear side of the vehicle body.

17 . The track travelling device according to claim 1 , further comprising a sensor mounted on the vehicle body to detect a distance between an obstacle and the vehicle body.

18 . The track travelling device according to claim 1 , further comprising a monitoring device mounted on the vehicle body to monitor a surrounding environment of the vehicle body.

19 . The track travelling device according to claim 1 , further comprising a detection device mounted on the vehicle body to detect connection states of components on the vehicle body, the connection device and the wheels.

Assignees

• Jingdong Technology Information Technology Co Ltd

Inventors

• Wu Chuanbiao

Classifications

• B61F1/14 Primary

  Attaching or supporting vehicle body-structure · CPC title

• B61C9/52

  with transmission shafts at an angle to the driving axles · CPC title

• B61K9/08

  Measuring installations for surveying permanent way · CPC title

• B61D15/12 Primary

  power propelled · CPC title