Track-guided vehicle, and car body tilt control method therefor

Patent metadata

Field	Value
Publication number	US-9643622-B2
Application number	US-201314760129-A
Country	US
Kind code	B2
Filing date	Feb 21, 2013
Priority date	Feb 21, 2013
Publication date	May 9, 2017
Grant date	May 9, 2017

Abstract

This track-guided vehicle is provided with a car body, and a bogie that supports the car body from the bottom, and has a frame capable of pivoting around an axis perpendicular to a track. The bogie is provided with: a car body tilting part that tilts the car body to the left and right in the direction of travel; a detection part that detects the amount of pivot of the frame; and a tilt control part that allows the car body to be tilted by the car body tilting part on the basis of the amount of pivot detected by the detection part.

First claim

The invention claimed is:

1. A guide-rail track vehicle comprising:
a car body;
a bogie configured to support the bottom of the car body; and
dampening apparatuses that are disposed between the bogie and the car body while being separate from each other in a vehicle lateral direction,
wherein the bogie includes
a car body tilting mechanism that has a drive unit and is configured to tilt the car body which has a first end in the vehicle lateral direction and a second end located opposite to the first end, wherein the drive unit is configured to lift the second end with respect to the first end;
a guiding frame configured to turn while being guided by guide rails provided along a track;
a detection unit that has a displacement sensor which is fixed to a floor surface of the car body or a suspension frame attached to the car body and a link mechanism which is configured to convert a displacement of the guiding frame in a turn direction into a displacement in a direction toward the displacement sensor, wherein the displacement sensor detects the displacement in the direction converted by the link mechanism, the detection unit is configured to detect the degree of turning of the guiding frame; and
a tilt control unit that is configured to calculate a tilt angle of the car body based on a detection result from the displacement sensor, and that is configured to control a drive unit based on the tilt angle.

2. The guide-rail track vehicle according to claim 1 ,
wherein the link mechanism includes:
a horizontal rod which is coupled to a cross beam of the guiding frame so as to extend in the vehicle lateral direction, and which is configured to be capable of swinging with respect to the guiding frame,
a horizontal detection link which is configured to be capable of swinging with respect to the horizontal rod, and which is supported by the car body so as to be capable of turning about an axial line extending in a longitudinal direction of the car body, and
a vertical rod which is configured to be capable of swinging with respect to the horizontal detection link, and which is formed to extend in a vertical direction; and
wherein the displacement sensor is configured to detect an amount of a vertical displacement of the vertical rod as a linear displacement.

3. The guide-rail track vehicle according to claim 1 , further comprising:
a height adjustment apparatus configured to be able to individually adjust the height of each of the dampening apparatuses; and
an automatic height adjustment mechanism configured to maintain the height of the dampening apparatus in a pre-set range of height by operating the height adjustment apparatus,
wherein the car body tilting mechanism includes a height adjustment apparatus moving mechanism configured to be able to move the height adjustment apparatus in a height direction, and a drive apparatus configured to drive the height adjustment apparatus moving mechanism, and
wherein the tilt control unit controls the driving of the drive apparatus based on a detection result from the detection unit, and moves the position, of the height adjustment apparatus in the height direction using the height adjustment apparatus moving mechanism.

4. The guide-rail track vehicle according to claim 1 , further comprising:
a height adjustment apparatus configured to be able to individually adjust the height of each of the dampening apparatuses; and
an automatic height adjustment mechanism configured to maintain the height of the dampening apparatus in a pre-set range of height by operating the height adjustment apparatus,
wherein the car body tilting mechanism includes a tilt angle control apparatus that is configured to change the height of the dampening apparatus while bypassing the height adjustment apparatus, when tilting the car body, and a tilt adjustment apparatus configured to restrict the height adjustment apparatus from adjusting the height of the dampening apparatus, and
wherein the tilt control unit controls the driving of the tilt angle control apparatus based on a detection result from the detection unit such that the height of the dampening apparatus is adjusted.

5. The guide-rail track vehicle according to claim 1 , further comprising:
a height adjustment apparatus configured to be able to individually adjust the height of each of the dampening apparatuses; and
an automatic height adjustment mechanism configured to maintain the height of the dampening apparatus in a pre-set range of height by operating the height adjustment apparatus,
wherein the car body tilting mechanism includes a car body lifting up and down apparatus that is configured to support the bottom of the dampening apparatus and to be able to move the position of the dampening apparatus in a vertical direction, and a tilt adjustment apparatus configured to restrict the height adjustment apparatus from adjusting the height of the dampening apparatus, and
wherein the tilt control unit controls the car body lifting up and down apparatus to displace the position of the dampening apparatus in the vertical direction based on a detection result from the detection unit.

6. The guide-rail track vehicle according to claim 5 ,
wherein the car body tilting mechanism includes a right/left stopper that is disposed in a lateral center portion of the floor portion of the car body and is configured to restrict the car body from being slid in the vehicle lateral direction while allowing the car body to be tilted in the vehicle lateral direction, and a car body tilting drive apparatus configured to apply force to the suspension frame in the vehicle lateral direction, and
wherein the till control unit controls the driving of the car body tilting drive apparatus based on a detection result from the detection unit such that force is applied to the suspension frame in the vehicle lateral direction.

7. The guide-rail track vehicle according to claim 1 , further comprising:
an anti-rolling apparatus that is configured to include a torsion bar extending in the vehicle lateral direction, and to restrict the tilting of the car body using a restoring force of the torsion bar in a torsional direction,
wherein the car body tilting mechanism includes a rod expansion and contraction apparatus configured to displace a neutral position of the torsion bar in the torsional direction, and
wherein the tilt control unit controls the driving of the rod expansion and contraction apparatus based on a detection result from the detection unit such that the neutral position of the torsion bar is displaced.

8. The guide-rail track vehicle according to claim 1 ,
wherein the tilt control unit includes
a running condition acquisition unit configured to acquire at least vehicle speed information as a running condition;
a curvature radius calculation unit configured to calculate the curvature radius of the track based on the degree of turning detected by the detection unit;
a normal acceleration calculation unit configured to obtain normal lateral acceleration applied to passengers in the vehicle based on the vehicle speed information and the curvature radius; and
a tilt angle calculation unit configured to calculate the lateral tilt angle of the car body based on the normal lateral acceleration.

9. The guide-rail track vehicle according to claim 8 , further comprising:
a speed detection unit configured to detect a vehicle speed,
wherein the running condition acquisition unit acquires vehicle speed information from the speed detection unit, and
wherein the normal acceleration calculation unit calculates normal lateral acceleration based on information regarding the vehicle speed and the curvature radius.

10. The guide-rail track vehicle a

Assignees

• Mitsubishi Heavy Ind Ltd

Inventors

• Maeyama Hiroyuki
• Tamura So
• Katahira Kousuke

Classifications

• B61F5/50

  Other details · CPC title

• B61F9/00

  Rail vehicles characterised by means for preventing derailing, e.g. by use of guide wheels · CPC title

• B61B13/00 Primary

  Other railway systems · CPC title

• B61F5/22

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