JPH07172313A - Floor inclining device and floor inclination control device - Google Patents

Abstract

PURPOSE:To hold a relative position between a pantograph and an overhead power line when a vehicle passes a curved part and to enhance riding comfort without complicating truck fairing and vehicle external appearance. CONSTITUTION:A floor inclining device 10 installed inside of a car body 2 of a rolling stock 9 is constituted of hydraulic cylinders 4 erected on both right and left sides of a bottom of the car body 2, and a floor 3 supported by rods 11 of the cylinders 4. In the case of traveling a curved part at a speed lower than that estimated at the time of cant determination (a), a component of gravitational force acts in the inward direction of the curve because of shortage of centrifugal force. At this time, inside the car body 2, the hydraulic cylinders 4 are operated to incline the floor 3 in the direction reverse to a track surface 8 so as to cancel the shortage of centrifugal force. Since influence of the centrifugal force upon passengers is thus cancelled, excellent riding comfort can be secured even in the case of traveling the curved part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor tilting device and a floor tilting control device for improving the riding comfort of a vehicle.

[0002]

2. Description of the Related Art In a curved portion of a railroad track, a track surface inclination, that is, a cant is set so as to balance centrifugal force due to a certain speed. When the vehicle approaches this curved portion, centrifugal force acts on the vehicle, but when this is in balance with the above-mentioned cant, the riding comfort is not impaired. However,
When passing at a speed different from the set speed, excessive centrifugal force or insufficient centrifugal force is generated to deteriorate the riding comfort. Therefore, a mechanism has been conventionally proposed in which the vehicle body is tilted to compensate for excess or deficiency of centrifugal force and improve riding comfort. An example of such a mechanism is a vehicle attitude control device shown in FIG. As shown in FIG. 11, the vehicle body 82 is supported by an air spring 85, and the air spring 85 is installed on a swing pillow 88. The swing pillow 88 is capable of relative rotational movement between the bogie frame 86 on which the wheels 87 are rotatably supported, and can generate a relative rotational angle between the bogie frame 86 and the vehicle body 82 by the operation of the actuator 84. it can. This relative rotation angle compensates for excess and deficiency of centrifugal force and improves riding comfort.

[0003]

However, as shown in FIG.
In the vehicle attitude control device, the pantograph 81 fixed to the upper surface of the vehicle body 82 also moves left and right with respect to the overhead wire 89 fixed to the ground due to the relative rotation angle. For this reason, it is necessary to take some ground measures for the relative movement between the pantograph 81 and the overhead wire 89, or to provide another device 90 for eliminating the relative movement between the pantograph 81 and the bogie frame 86 as shown in FIG. It was

Further, in the vehicle attitude control system of FIG. 11, since the bogie frame 86 and the vehicle body 82 move relative to each other, aerodynamic noise
The structure of the bogie fairing for preventing rolling noise becomes complicated,
Furthermore, since the entire vehicle body tilts, it is necessary to narrow the skirt of the vehicle body due to the limitation of the vehicle body.

The present invention has been made in view of the above problems, and maintains the relative positions of the pantograph and the overhead line when the vehicle passes through a curved portion without complicating the bogie fairing and the appearance of the vehicle. It is an object of the present invention to provide a floor surface inclination device and a floor surface inclination control device that improve riding comfort.

[0006]

In order to solve the above-mentioned problems, a floor surface tilting device according to claim 1 of the present invention is provided inside a vehicle body of a vehicle and oscillates about an axis in the longitudinal direction of the vehicle. A movable floor surface and an angle adjusting means for adjusting the floor surface to a predetermined swing angle are provided.

A floor inclination control apparatus according to a second aspect of the present invention is a floor inclination control apparatus according to the first aspect, a lateral acceleration detecting means for detecting a lateral acceleration of a vehicle, and an inclination of a track surface through which the vehicle passes. A cant detecting means for detecting an angle, the lateral acceleration of the vehicle detected by the lateral acceleration detecting means, and the angle adjusting means of the floor surface inclining device based on the inclination angle of the raceway surface detected by the cant detecting means. Control means for controlling the angle of the floor surface by controlling the.

[0008]

In the floor tilting device according to the first aspect, the tilting angle of the floor can be adjusted independently of the vehicle body by the angle adjusting means. On the other hand, the curved portion of the vehicle track is provided with a track surface inclination or cant for correcting centrifugal force.
This cant can completely cancel the centrifugal force only when the vehicle travels at a specific speed.
When the vehicle travels on this curved portion, in the floor surface inclination control device according to the second aspect, the lateral acceleration detecting means detects the lateral acceleration of the vehicle, and the cant detecting means detects the inclination angle of the track surface. Then, based on the lateral acceleration and the inclination angle of the raceway surface, the control means controls the angle adjusting means of the floor surface inclining device when the centrifugal force is excessive or insufficient with respect to the inclination angle of the raceway surface. Tilt the surface to a predetermined angle. As a result, the component force of gravity acting on the passenger in the floor inclination direction and the centrifugal component of the centrifugal force in the floor inclination direction are canceled, and a good ride comfort can be secured when the vehicle passes through the curved portion.

[0009]

The preferred embodiments of the present invention will be described below. FIG. 1 is an explanatory diagram of a railway vehicle according to the first embodiment.
FIG. 3 is a schematic explanatory view of a floor tilting device used in the first embodiment. Further, FIG. 3 is a schematic explanatory view of a floor surface inclining device used in the second embodiment, FIG. 4 is a schematic explanatory view of a floor surface inclining device of a modification of the first and second embodiments, and FIG. It is a schematic explanatory drawing of the floor surface inclination apparatus used for 3rd Example, and FIG. 6 is a schematic explanatory drawing of the floor surface inclination apparatus of the modification of 3rd Example.

The first embodiment is an example in which the floor tilting device according to the first aspect is applied to a railway vehicle. The railway vehicle 9 rotatably supports the wheels 7 and inclines along the track surface 8, a bogie frame 6, an air spring 5 installed on the bogie frame 6,
The vehicle body 2 is installed on the air spring 5, and the pantograph 1 is installed on the upper surface of the vehicle body 2.

A floor tilting device 10 is provided inside the vehicle body 2. As shown in FIG. 2, the floor surface tilting device 10
Is composed of a hydraulic cylinder 4 as an angle adjusting means provided upright on both left and right sides of the bottom surface of the vehicle body 2, and a floor surface 3 supported by a rod 11 of the hydraulic cylinder 4. Floor 3
Is mounted so as to be swingable in the arrow direction around a swing shaft 12 provided in the front-rear direction of the vehicle. An accumulator 13 is connected to the working chamber of the hydraulic cylinder 4 via a hydraulic valve 15 which is an electromagnetic valve, and the accumulator 13 is connected to a hydraulic pump 14. By operating the hydraulic valve 15 provided in this hydraulic line, the floor surface 3 swings around the swing shaft 12. Alternatively, the hydraulic pump 14 may be directly connected to the working chamber of the hydraulic cylinder 4, and the floor surface 3 may be swung by operating the hydraulic pump 14 itself.

Next, the operation of the first embodiment will be described. FIG. 1A shows a state in which the vehicle travels at a speed slower than the vehicle speed assumed at the time of setting the cant (inclination of the raceway surface) in the curved portion. Originally, when the vehicle travels at high speed, centrifugal force acts on the vehicle 9 to balance it with the cant. However, in this case, the centrifugal force is insufficient, so that the floor surface 3 is directed inward of the curve (to the right in FIG. 1A). The component force of the load F1 acting on the vehicle acts to deteriorate the riding comfort of passengers. According to this embodiment, this can be solved as follows. The vehicle body 2, together with the air spring 5, the bogie frame 6, and the wheels 7, is inclined at substantially the same angle as the track surface 8. At this time, inside the vehicle body 2, by adjusting the hydraulic valve 15 and operating the hydraulic cylinder 4, the floor surface 3
Is inclined in the opposite direction to the raceway surface 8 to cancel the insufficient centrifugal force. That is, the load F1 applied to the floor surface 3 is set to an inclination angle at which the component force in the floor surface inclination direction A and the centrifugal force F2 in the floor surface inclination direction A are balanced.

FIG. 1 (b) shows a state in which the vehicle travels at a speed higher than the vehicle speed assumed when the cant is set in the curved portion. In this case, since the centrifugal force F2 exceeds,
Centrifugal force F2 in the outward direction of the curve (rightward in FIG. 1 (b)) acts on the passenger to deteriorate the riding comfort. According to this embodiment, this can be solved as follows. The vehicle body 2, together with the air spring 5, the bogie frame 6, and the wheels 7, is inclined at substantially the same angle as the track surface 8. At this time, inside the vehicle body 2, by operating the hydraulic cylinder 4, the floor surface 3 is inclined in the same direction as the raceway surface 8 to cancel the excess centrifugal force. That is, the load F1 applied to the floor surface 3 is set to an inclination angle at which the component force in the floor surface inclination direction A and the centrifugal force F2 in the floor surface inclination direction A are balanced.

The effects of the first embodiment will be described below. Since the influence of centrifugal force on passengers is canceled, a good ride comfort can be secured. Since the relative position between the bogie frame 6 and the pantograph 1 that is the current collector does not change, the relative position between the pantograph 1 and the overhead line (not shown) that is the current collecting system on the ground does not change compared to when the cant is set. . Therefore, it is not necessary to modify the overhead line or provide another device for adjusting the relative position. Since the relative position between the vehicle body 2 and the bogie frame 6 does not change, the bogie fairing structure is simplified, and aerodynamic noise generated from gaps, protrusions, steps, etc., and rolling noises of the wheels 7, motor noises, etc. It is easy to take measures to prevent dynamic noise. Further, since the vehicle body 2 itself does not tilt, the position of the vehicle body 2 does not change with respect to the vehicle limit, the cross section of the vehicle body 2 can be made large, and the living space can be expanded compared to the case of FIG. 11. Since only the seats, aisles, passengers, etc. above the floor surface 3 need to be moved, the weight is lighter than that of moving the entire vehicle body 2, so power can be saved. Since the hydraulic cylinder 4 as the angle adjusting means forcibly inclines, the degree of freedom in designing the center of gravity of the vehicle body 2 can be increased.

Next, a second embodiment will be described. Second
The railway vehicle of the embodiment has the same configuration as that of the first embodiment except that the floor surface tilting device 20 is different. Therefore, the same components are designated by the same reference numerals, and the description thereof will be omitted. As shown in FIG. 3, the floor inclining device 20 is composed of a gear mechanism 21 as an angle adjusting means which is erected on the right side of the bottom surface of the vehicle body 2 and a floor surface 3 supported by the gear mechanism 21. It
The floor surface 3 is attached so as to be swingable in the arrow direction around a swing shaft 12 provided in the front-rear direction of the vehicle 9 (see FIG. 1). The gear mechanism 21 includes a rack 22 that supports the floor surface 3,
The guide rail 23 for guiding the rack 22 and the rack 2
The worm gear 24 meshes with the two, and the drive motor 25 that rotates the worm gear 24. Therefore, by rotating the drive motor 25, the floor surface 3 swings around the swing shaft 12.

The operation and effect of the second embodiment is the same as that of the first embodiment, and therefore its explanation is omitted. In the first and second embodiments, the swing shaft 12 is provided substantially in the center of the floor surface 3, but the swing shaft 12 is limited to the substantially center as long as it extends in the front-rear direction of the vehicle 9. It may be provided in any of them. Further, the swing shaft 12 may not be provided, but in that case, actuators such as the hydraulic cylinder 4 or the gear mechanism 21 are required on both sides. When the swing shaft 12 is provided, the actuators may be provided on both left and right sides or only on one side. Further, a system may be adopted in which the hydraulic cylinder 4 is provided as an actuator at a position above the floor surface 3 and one side is pulled up by the rod 11 (see FIG. 4A). Further, racks 26 are provided at both ends of the floor, and the worm gear 24 is meshed with the racks 26 to drive the drive motor 25.
You may drive by (refer FIG.4 (b)).

Next, a third embodiment will be described. The railcar of the third embodiment is different from the railroad tilting device 30 except that
Since the configuration is similar to that of the first embodiment, the same components are designated by the same reference numerals, and the description thereof will be omitted. As shown in FIG. 5, in the floor surface tilting device 30, the floor surface 3 is on the left side of the vehicle body 2,
It is divided into three parts, the center and the right side.
A passage portion 32 and a right seat portion 33 are formed. Passage 32
Are fixed substantially parallel to the bottom surface of the vehicle body 2. The left seat portion 31 and the right seat portion 33 are connected to both sides of the passage portion 32 via hinges 34 and 35 extending in the front-rear direction of the vehicle 9 (see FIG. 1), and can swing around the hinges 34 and 35. Is. An actuator (not shown) is provided below the left seat portion 31 and the right seat portion 33. By driving the actuator, both seat portions 31 and 33 swing in the arrow directions. As the actuator, for example, the hydraulic cylinder 4 of the first embodiment or the gear mechanism 21 of the second embodiment can be used. In this case, the floor displacement amount and the center-of-gravity displacement amount of the moving portion can be reduced, so that the configuration becomes easier.

Since the operation and effect of the third embodiment are almost the same as those of the first embodiment, the description thereof will be omitted. In the third embodiment, the left and right seat portions 31 and 33 are swung, but a method of swinging only the leg parts 36 and 37 of the seat may be adopted (see FIG. 6). Next, a fourth embodiment will be described.

The fourth embodiment is an example in which the floor inclination control device according to the second aspect is applied to a railway vehicle, and FIG. 7 is a schematic configuration diagram thereof. The same components as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted. The railway vehicle according to the fourth embodiment is different from the railway vehicle according to the first embodiment in that a speed detector 41 that detects the speed of the vehicle, a curve information receiver 42 that receives curve information, and a slope of the floor 3 from the speed and curve information. A control device 43 for controlling the angle is added.

As the speed detector 41, it is possible to use, for example, a conventionally known wheel rotation speed counting method, a wheel direct-connection motor electromotive voltage detection method, a crossing guide wire utilization method, or the like. In addition, the curve information receiver 42 is a curve information transmitter 44 installed at a fixed point on the ground approaching the curved portion of the track.
To receive curve information such as curve radius and cant. The control device 43 includes a CPU, RAM,
It is composed of a ROM and the like.

FIG. 8 is a flow chart of floor surface inclination processing. The floor inclination processing program is the RO of the control device 43.
It is stored in M and the processing is executed by the CPU. When the floor surface inclination process is started, the speed is input from the speed detector 41 and the curve information is input from the curve information receiver 42 (S1).
10). Then, the lateral acceleration is calculated from the velocity and the curve radius (S120), and the predetermined inclination angle is calculated from the lateral acceleration (S130). Here, the predetermined inclination angle means an angle at which the component force in the floor surface inclination direction A of the load F1 applied to the floor surface 3 and the component force in the floor surface inclination direction A of the centrifugal force F2 are balanced. Next, the calculated predetermined tilt angle is compared with the cant to calculate the excess or deficiency as the correction angle (S140).
After that, the hydraulic valve of the hydraulic pump 14 is adjusted based on this correction angle (S150), and the floor surface 3 is tilted by the correction angle by the hydraulic cylinder 4.

The fourth embodiment has the following effects in addition to the effects of the first embodiment. That is, even when the vehicle 9 passes through the curved portion at a speed other than the speed at the time of setting the cant, the control device 43 appropriately determines, calculates a predetermined inclination angle, and operates the hydraulic cylinder 4, Since the influence of centrifugal force on passengers is canceled, it is possible to always ensure a good ride comfort.

The control device 43 of this embodiment corresponds to the lateral acceleration detecting means and the controlling means of the invention described in claim 2. S120 of the flow chart of FIG. 8 is the processing of the lateral acceleration detecting means, and S130 to 140 are. It corresponds to the processing of the control means.
The curve information receiver 42 corresponds to the cant detecting means.

Next, a fifth embodiment will be described. Fifth
The embodiment is also an example in which the floor inclination control device according to claim 2 is applied to a railway vehicle, and FIG. 9 is a schematic configuration diagram thereof. The railway vehicle according to the fifth embodiment is different from the railway vehicle according to the first embodiment in that a lateral acceleration sensor 51 that detects a lateral acceleration of the vehicle, a curve information receiver 52 that receives curve information, and a slope of a floor from speed and curve information. A control device 53 for controlling the angle is added.

In this embodiment, the control device 53 calculates a predetermined tilt angle from the lateral acceleration input from the lateral acceleration sensor 51, calculates a correction angle by comparing with the cant, and adjusts the hydraulic valve of the hydraulic pump 14. Then, the inclination of the floor surface 3 is controlled. The function and effect are the same as those in the fourth embodiment, and will be omitted. The lateral acceleration sensor 51 of this embodiment corresponds to the lateral acceleration means of the invention described in claim 2, the curve information receiver 52 corresponds to the cant detection means, and the control device 53 corresponds to the control means.

In the fifth and sixth embodiments described above, when the predetermined tilt angle is calculated, the prediction control can be performed by adding the component obtained by further differentiating the lateral acceleration in addition to the lateral acceleration. For example, a better ride comfort can be secured by calculating and controlling a predetermined tilt angle in a state where the time required for the operation of the actuator has elapsed.

Further, as a fail-safe mechanism, a stopper for limiting the range of the inclination angle of the floor surface is installed, control / control is performed.
The drive system may be a multiple system or a distributed system, and even if one mechanism fails, another mechanism may be able to compensate. Also, FIG.
In the case of using the worm gear mechanism, the self-lock can be activated by increasing the reduction ratio.

It is needless to say that the present invention is not limited to the above-mentioned embodiments and can be carried out in various modes without departing from the gist of the present invention. For example,
As the angle adjusting means of the floor surface tilting device according to the first aspect, the floor surface may be rotated by utilizing a natural force. For example, as shown in FIG. 10, the movable floor 63 is swingably mounted on the arcuate linear bearing 61 provided under the floor, and the swing center 65 is set above the floor + seat + person's center of gravity. The movable floor 63 may be swung by the centrifugal force received by the vehicle.

Further, as the drive source of the angle adjusting means, not only hydraulic pressure and electricity but also pneumatic pressure can be used. Also in the case of electric driving, a linear motor, an ultrasonic motor, or the like can be used in addition to a normal rotary motor. Further, the cant detection means of the floor surface inclination control device according to claim 2 may be configured to detect the inclination angle of the vehicle body bottom surface with respect to the horizontal plane because the vehicle body bottom surface inclination angle matches the track surface inclination angle.

[0030]

As described in detail above, according to the floor surface tilting device and the floor surface tilting control device of the present invention, the relative position between the pantograph and the overhead line is maintained when the vehicle passes through the curved portion, and the carriage is maintained. The ride comfort can be improved without complicating the fairing and the vehicle appearance.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a railway vehicle according to a first embodiment.

FIG. 2 is a schematic explanatory view of a floor tilting device used in the first embodiment.

FIG. 3 is a schematic explanatory view of a floor inclination device used in a second embodiment.

FIG. 4 is a schematic explanatory view of a floor surface inclining device of a modified example of the first and second embodiments.

FIG. 5 is a schematic explanatory diagram of a floor surface tilting device used in a third embodiment.

FIG. 6 is a schematic explanatory view of a floor tilting device of a modified example of the third embodiment.

FIG. 7 is a schematic configuration diagram of a floor surface inclination control device used in a fourth embodiment.

FIG. 8 is a flowchart of floor surface inclination processing.

FIG. 9 is a schematic configuration diagram of a floor surface inclination control device used in a fifth embodiment.

FIG. 10 is a schematic explanatory view of another floor surface tilting device.

FIG. 11 is a schematic explanatory diagram of a conventional vehicle attitude control device.

FIG. 12 is a schematic explanatory diagram of a vehicle attitude control device including a device that adjusts a relative position between a pantograph and an overhead wire.

[Explanation of symbols]

1 ... Pantograph, 2 ... Car body, 3
... Floor surface, 4 ... Hydraulic cylinder, 6 ... Bogie frame, 8 ... Track surface, 9 ... Rail vehicle, 10, 20,
30 ... Floor inclining device, 11 ... Rod,
12 ... rocking shaft, 14 ... hydraulic pump,
21 ... Gear mechanism, 31 ... Left seat part,
32 ... passage part, 33 ... right seat part, 41 ... speed detector, 42, 52
... Curve information receiver, 43, 53 ... Control device,
44, 54 ... Curve information transmitter, 51 ... Lateral acceleration sensor,

Claims (2)

[Claims] 1. A floor surface provided inside a vehicle body of a vehicle, the floor surface being swingable around a longitudinal axis of the vehicle, and an angle adjusting means for adjusting the floor surface to a predetermined swing angle. A floor tilting device characterized in that 2. The floor inclining device according to claim 1, a lateral acceleration detecting means for detecting a lateral acceleration of the vehicle, a cant detecting means for detecting an inclination angle of a track surface on which the vehicle passes, and the lateral acceleration. Based on the lateral acceleration of the vehicle detected by the detecting means and the inclination angle of the track surface detected by the cant detecting means, the angle adjusting means of the floor surface inclining device is controlled to adjust the angle of the floor surface. A floor inclination control device comprising: a control means.