Transaxle of rail vehicle, rail vehicle, and rail transportation system

Patent metadata

Field	Value
Publication number	US-11964680-B2
Application number	US-201916967666-A
Country	US
Kind code	B2
Filing date	Jan 28, 2019
Priority date	Feb 6, 2018
Publication date	Apr 23, 2024
Grant date	Apr 23, 2024

Abstract

A transaxle of a rail vehicle includes: a power assembly; an axle body; a running wheel; a guiding frame; a horizontal wheel; and a connecting rod component, including a first transverse pull rod and a second transverse pull rod, where when the rail vehicle turns left, the horizontal wheel cooperates with a rail beam to drive the guiding frame to swing and drive the first transverse pull rod to move together, and the second transverse pull rod is driven by the first transverse pull rod to drive the running wheel to swing to the left, and when the rail vehicle turns right, the horizontal wheel cooperates with the rail beam to drive the guiding frame to swing and drive the first transverse pull rod to move together, and the second transverse pull rod is driven by the first transverse pull rod to drive the running wheel to swing to the right.

First claim

What is claimed is:

1. A transaxle of a rail vehicle, comprising:
a power assembly;
an axle body, connected to a vehicle frame of the rail vehicle;
a running wheel, rotatable in an axial direction of the running wheel and transversely swingably mounted on the axle body, wherein the running wheel is supported on a rail beam along which the rail vehicle travels, the power assembly is transmission-connected to the running wheel to drive the running wheel to rotate;
a guiding frame, mounted on the axle body and rotatable relative to the axle body in a horizontal direction;
a horizontal wheel, disposed on the guiding frame; and
a connecting rod component, comprising a first transverse pull rod and a second transverse pull rod, wherein the first transverse pull rod is pivotally mounted on the guiding frame, the second transverse pull rod is respectively transmission-connected to the first transverse pull rod and the running wheel, the first and second transverse pull rods being longitudinally spaced apart and extending in a transverse direction between left and right sides of the transaxle, wherein
when the rail vehicle turns left, the horizontal wheel cooperates with the rail beam to drive the guiding frame to swing and to drive the first transverse pull rod to move together, and the second transverse pull rod is driven by the first transverse pull rod to drive the running wheel to swing to the left, and
when the rail vehicle turns right, the horizontal wheel cooperates with the rail beam to drive the guiding frame to swing and to drive the first transverse pull rod to move together, and the second transverse pull rod is driven by the first transverse pull rod to drive the running wheel to swing to the right.

2. The transaxle of a rail vehicle according to claim 1 , wherein the connecting rod component further comprises:
a left steering arm and a right steering arm, wherein a first end of the first transverse pull rod is pivotally mounted on the guiding frame, the left steering arm and the right steering arm are respectively located on two sides of the guiding frame, a first end of the left steering arm is transmission-connected to one of the running wheels that is located on the left side, a first end of the right steering arm is transmission-connected to one of the running wheels that is located on the right side, a second end of the first transverse pull rod is pivotally connected to the middle of one of the left steering arm and the right steering arm, a second end of the left steering arm and a second end of the right steering arm are respectively pivotally connected to two ends of the second transverse pull rod, the first transverse pull rod is transmission-connected to the second transverse pull rod by one of the left steering arm and the right steering arm.

3. The transaxle of a rail vehicle according to claim 2 , wherein the guiding frame comprises a frame body and a mounting base mounted on the frame body, and the first transverse pull rod is pivotally mounted on the mounting base, wherein the mounting base is disposed at a right edge adjacent to the frame body, and the first transverse pull rod is pivotally connected to the left steering arm.

4. The transaxle of a rail vehicle according to claim 2 , wherein the axle body further comprises:
an axle housing assembly; and
a left steering knuckle and a right steering knuckle, wherein the left steering knuckle is pivotally connected to the axle housing assembly by a left pin shaft, the right steering knuckle is pivotally connected to the axle housing assembly by a right pin shaft, the two running wheels are respectively rotatably mounted on the left steering knuckle and the right steering knuckle, the left steering arm is connected to the left steering knuckle, the right steering arm is connected to the right steering knuckle.

5. The transaxle of a rail vehicle according to claim 4 , wherein the axle housing assembly is formed by welding a right half-axle fork, an axle housing, and a left half-axle fork, wherein the left half-axle fork has an upper left limb and a lower left limb that are disposed at an interval in the vertical direction, the left pin shaft comprises an upper left pin shaft and a lower left pin shaft, the left steering knuckle cooperates with the upper left pin shaft inside the upper left limb and cooperates with the lower left pin shaft inside the lower left limb to be pivotally connected to the left half-axle fork, the right half-axle fork has an upper right limb and a lower right limb that are disposed at an interval in the vertical direction, the right pin shaft comprises an upper right pin shaft and a lower right pin shaft, and the right steering knuckle cooperates with the upper right pin shaft inside the upper right limb and cooperates with the lower right pin shaft inside the lower right limb to be pivotally connected to the right half-axle fork.

6. The transaxle of a rail vehicle according to claim 5 , wherein a push cylindrical roller bearing is disposed between the left steering knuckle and at least one of the upper left limb and the lower left limb, and a push cylindrical roller bearing is disposed between the right steering knuckle and at least one of the upper right limb and the lower right limb.

7. The transaxle of a rail vehicle according to claim 4 , wherein the transaxle of a rail vehicle further comprises two brakes, the two running wheels are respectively mounted on the left steering knuckle and the right steering knuckle by a wheel hub assembly, and the two brakes are respectively locked on the two wheel hub assemblies by a guiding bolt.

8. The transaxle of a rail vehicle according to claim 7 , further comprising a dust guard that is sleeved over the guiding bolt and used for preventing dust from touching the surface of the guiding bolt.

9. The transaxle of a rail vehicle according to claim 7 , wherein a wheel speed sensor is disposed on at least one of the left steering knuckle and the right steering knuckle, an induction ring gear that rotates along with the running wheel is disposed on the brake, and the wheel speed sensor detects the rotation of the induction ring gear to detect the rotational speed of the running wheel.

10. The transaxle of a rail vehicle according to claim 1 , further comprising a rear cover assembly, wherein the rear cover assembly is mounted on the axle body, an oil addition plug used for adding gear lubricating oil to the axle housing is disposed on the rear cover assembly, and an oil discharge plug used for discharging the gear lubricating oil is disposed on the bottom wall of the axle body.

11. The transaxle of a rail vehicle according to claim 1 , further comprising a transmission shaft assembly, wherein a first end of the transmission shaft assembly is transmission-connected to the power assembly by a spline, a second end of the transmission shaft assembly is transmission-connected to the running wheel, and the transmission shaft assembly is supported on the axle housing assembly and a steering knuckle assembly by a needle roller bearing.

12. The transaxle of a rail vehicle according to claim 1 , wherein the power assembly comprises a motor and a main reduction drive, the motor is electrically connected to a battery of the rail vehicle, and an output shaft of the motor is transmission-connected to the transmission shaft assembly by the main reduction drive.

13. The transaxle of a rail vehicle according to claim 1 , wherein two front horizontal wheels are provided, two rear horizontal wheels are provided, the upper surface of the rail beam is provided with a groove, the two front horizontal wheels respectively abut two sidewalls of the groove, an

Assignees

• Byd Co Ltd

Inventors

• Zhou Kang
• Liu Guang
• Wang Jingjing
• Wei Jia
• Liu Huiyue

Classifications

• B61F15/20 Primary

  Details · CPC title

• B60B35/003 Primary

  Steerable axles · CPC title

• B61F3/04

  with driven axles or wheels · CPC title

• B61F5/02

  Arrangements permitting limited transverse relative movements between vehicle underframe or bolster and bogie; Connections between underframes and bogies · CPC title

• B61F5/22

  Guiding of the vehicle underframes with respect to the bogies · CPC title