JP2000308202A - Attitude holding mechanism of pantograph for railway vehicles - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To reliably position a pantograph on a vertical line of a track without using a complicated fluid mechanism for maintenance and inspection, even on a curved road. A base end of an arm is integrally attached to both ends of a torsion bar rotatably attached to a bogie frame. One end of the link 6 is pivotally connected to the tip of the arm 5 so as to be freely rotatable. At the other end of the link 6, one end of a bell crank 7 whose center bent portion is pivotally mounted on the upper side of the vehicle body 2 is pivotally connected. The other ends of these bell cranks 7 are rotatably connected by connecting rods 8. One side of a pantograph support 10 rotatably supported at one point on the vehicle body 2 on the other side is pivotally connected to the center of the connecting rod 8. [Effect] The pantograph can always be positioned on the vertical line of the track only with a mechanical link mechanism. Also,
The pantograph does not move with respect to the vertical and horizontal displacements between the vehicle body and the bogie frame, so that there is no malfunction even in a section where the vehicle body does not tilt, and the reliability is high.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pantograph for a railway vehicle, and more particularly to a posture maintaining mechanism for a pantograph.

[0002]

2. Description of the Related Art In order to increase the speed of a railway vehicle, a vehicle body is inclined inside a curved road so that passengers in the vehicle do not feel centrifugal force while traveling on a curved road so that the vehicle can pass on a curved road at a high speed. Such a pendulum vehicle has been conventionally used.

[0003] Since some vehicles do not perform a vehicle body tilting operation, an overhead line for supplying power is installed on a vertical line of the track even on a curved road. Therefore, if the inclination angle of the vehicle body toward the inside of a curved road is increased in the pendulum vehicle in order to further increase the speed, the pantograph may deviate from the overhead line depending on the inclination angle.

In order to solve such a problem, there are various mechanisms for tilting the pantograph in a direction opposite to the inclination of the vehicle body in accordance with the inward inclination of the curved road to prevent the pantograph from coming off the overhead line. Proposed.

For example, Koichi Sasaki and three others, "TRY-Z Pantograph Posture Holding Mechanism" in Railway Vehicles and Technology (December, 1996) include two hydraulic cylinders (displacement detecting cylinders) under the floor of a vehicle body. The vehicle body roll angle is detected by disposing it, the change amount of the vehicle body roll angle is converted into a flow rate, and transmitted to a hydraulic cylinder (posture holding cylinder) for driving a pantograph table disposed on the roof of the vehicle body through a closed circuit pipe. Thus, there is disclosed an apparatus that maintains the position of the pantograph with respect to the bogie regardless of the change in the inclination angle of the vehicle body.

Japanese Unexamined Patent Publication No. Hei 6-233406 discloses a pantograph supporting apparatus in which a part of a vehicle body is penetrated and a pantograph is supported by a supporting frame connected to a bogie frame. By doing so, it is disclosed that the unevenness of the wear of the current collector boat is eliminated and the risk of the current collector boat coming off the overhead wire is prevented.

Japanese Unexamined Patent Publication No. Hei 5-115104 discloses a pantograph and a pantograph supporting gantry in which a pantograph and a pantograph supporting gantry can move relative to the roof of the vehicle in a direction perpendicular to the traveling direction of the vehicle. There is disclosed an apparatus in which a support base is restrained by a rope that does not expand and contract so that a neutral position of a pantograph can be maintained even when the vehicle body is inclined.

Japanese Patent Application Laid-Open No. 58-212302 discloses that
There is disclosed a roller-type natural vehicle that appropriately restores a displacement amount of a pantograph with respect to an overhead line by using a rotational force and a rotational angle of a roller.

[0009]

However, the "TRY-Z pantograph attitude holding mechanism" of the railway vehicle and the technology.
In the method disclosed in (1), since hydraulic pressure is used as the driving means, maintenance and inspection of the hydraulic operation mechanism are indispensable, and the cost is high.

In the system disclosed in JP-A-6-233406, since the pantograph support frame is directly mounted on the bogie frame, the own weight of the pantograph support frame directly acts on the bogie frame, and the pillow spring of the vehicle is used. Lower weight increases. Also,
Since the vertical vibration of the bogie frame directly acts on the pantograph support frame, there is also a problem that the pantograph support frame is adversely affected.

In the system disclosed in Japanese Unexamined Patent Publication No. Hei 5-115104, the pantograph is supported by a rope in a direction perpendicular to the traveling direction of the vehicle body. When the rope is displaced in the vertical direction, the rope is loosened or pulled as a whole, and a separate mechanism for correcting the displacement is required.

Further, in the system disclosed in Japanese Patent Application Laid-Open No. 58-212302, there is a problem that the pantograph is tilted when the vehicle body is displaced purely in the vertical direction with respect to the bogie frame due to the deflection of the pillow spring. is there.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and does not use a complicated fluid mechanism such as hydraulic pressure for maintenance. An object of the present invention is to provide a railcar pantograph attitude holding mechanism that can be positioned on a line.

[0014]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, a rail car pantograph attitude holding mechanism according to the present invention is provided at both ends of a torsion bar rotatably mounted on a bogie frame. Attach the arms with the base end united, and pivotally connect one end of the link to the tip of these arms so that it can rotate freely. The other end of the bell crank is pivotally connected to one end of the bell crank, and the other end of the bell crank is rotatably connected to the connecting rod by a connecting rod. It is said that one side of a pantograph support that is pivotally supported is pivotally mounted. By doing so, the pantograph can be displaced in the direction opposite to the inclination of the vehicle body in accordance with the displacement of the vehicle body inclined with respect to the bogie frame only by the mechanical link mechanism.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hitherto, as a means for providing a suitable rigidity against rolling displacement between a bogie frame and a vehicle body, a torsion bar and an anti-rolling device having arms attached to both ends thereof have been employed. . This anti-rolling device has a function of extracting only a rolling displacement (tilt) between a vehicle body and a bogie frame as a mechanism. Therefore, attach the link to the tip of the arm that constitutes this anti-rolling device,
If this link is connected to the pantograph support on the vehicle body, it becomes possible to move the pantograph only in response to the tilt displacement between the vehicle body and the bogie frame.

The attitude maintaining mechanism of a pantograph for a railway vehicle according to the present invention is constructed based on the above-described concept, and has a base end integrated with both ends of a torsion bar rotatably mounted on a bogie frame. Arm that is attached to the end, and a link that has one end pivotally attached to the tip of these arms so that it can rotate freely.
One end is pivotally connected to the other end of these links, and the center bent portion is a bell crank pivotally mounted on the upper side of the vehicle body, and a connecting rod that connects the other ends of these bell cranks so that they can rotate freely. One side is pivotally attached to the center of the connecting rod, and the other side is provided with a pantograph support that is pivotally supported at one point on the vehicle body so that it can rotate freely, and if necessary, between the arm and the link. A lower link whose one end is pivotally supported at the tip of the arm, the other end of the lower link is positioned at one end, and the other end is pivoted at one end of the link so as to freely rotate. Dressed,
A lever is pivotally attached to the center of the lower surface of the vehicle body, or an elastic body is interposed between the connecting rod and the pantograph support, and the connecting rod is divided into two parts via the elastic body. I do.

Since the pantograph attitude maintaining mechanism for a railway vehicle according to the present invention is constructed as described above, it does not require complicated maintenance like a hydraulic mechanism, and uses only a mechanical link mechanism and a bogie frame. Accordingly, the pantograph can be displaced in a direction opposite to the inclination of the vehicle body in accordance with the displacement of the vehicle body to be always positioned on the vertical line of the track.

Further, in the pantograph attitude maintaining mechanism for a railway vehicle according to the present invention, even when the vehicle body is purely vertically displaced with respect to the bogie frame, only the inclination displacement is detected, and The position can be adjusted automatically.

In the railcar pantograph attitude holding mechanism according to the present invention, a lower link whose one end is pivotally supported at the tip of the arm between the arm and the link, and the other end of the lower link is connected to the other end. And the other end is rotatably connected to one end of the link so as to be freely rotatable, and if a lever is pivotally attached at the center to the lower surface of the vehicle body, the lower side of the vehicle (the bogie) Side) to the upper side of the vehicle body (pantograph side), there is a degree of freedom in the arrangement of the link mechanism for transmitting the tilt displacement between the vehicle body and the bogie frame, so that it is easier to secure a cabin space for the vehicle body.

Further, in the pantograph attitude maintaining mechanism for a railway vehicle according to the present invention, an elastic body is interposed at a pivot portion between the connecting rod and the pantograph support, and the connecting rod is divided into two parts via the elastic body. Thus, the vibration component of the tilt displacement between the bogie frame and the vehicle body can be prevented from being directly transmitted to the pantograph, and the displacement difference due to a manufacturing error of the links disposed on the left and right sides of the vehicle body can be absorbed.

[0021]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a pantograph for a railway vehicle according to the present invention; FIG. FIG. 1 is a schematic explanatory view of a rail car pantograph attitude holding mechanism according to the present invention,
(A) is a schematic explanatory view of a posture holding mechanism of a pantograph for a railway vehicle according to the present invention corresponding to claim 2, (b) is an A-view of (a), and FIG. 3 is a book corresponding to claim 3. FIG. 4 is a schematic explanatory view of a railcar pantograph attitude holding mechanism according to the present invention, and FIG. 4 is a diagram illustrating an operation of a vehicle equipped with the railcar pantograph attitude holding mechanism according to the present invention when leaning. FIG. 5A is a perspective view of a pantograph for a railway vehicle according to the present invention corresponding to claim 1, wherein (a) is at the normal position, (b) is inclined to the left side of the paper, and (c) is inclined to the right side of the paper. FIGS. 6A and 6B are diagrams for explaining the operation of the vehicle provided with the posture holding mechanism when the vehicle is vertically displaced, wherein FIG. 6A shows a normal position, FIG. 6B shows a downward displacement, FIG. The vehicle equipped with the railcar pantograph attitude holding mechanism according to the present invention corresponding to claim 1 FIG. 7 is a diagram for explaining the operation when the vehicle is displaced in the direction, and FIG. 7 is a diagram for explaining the operation when the vehicle equipped with the railcar pantograph attitude holding mechanism according to the second aspect of the present invention inclines. () Is a diagram showing a normal position, and (b) is a diagram showing a case of tilting to the left side of the paper.

In FIG. 1, reference numeral 1 denotes a bogie frame disposed on the back side of the vehicle body 2. The bogie frame 1 has a torsion bar in the width direction of the vehicle body 2 so as to be rotatable via a bearing 3a. 4
Is provided. And, at both ends of the torsion bar 4,
The base end of the arm 5 is integrally attached.

Reference numeral 6 denotes a link vertically arranged on both sides of the vehicle body 2, and one end of the link is pivotally connected to the tip of the arm 5 so as to be freely rotatable. The other end of the link 6 has a central bent portion on the upper side of the vehicle body 2 such as a bearing 3.
b and is pivotally connected to one end of a bell crank 7 pivotally mounted via b.

Reference numeral 8 denotes a connecting rod for connecting the other ends of the bell crank 7 so as to be freely rotatable. In the center of the connecting rod 8, one side of a pantograph support 10 having a pantograph 9 is provided. Being pivoted. The other side of the pantograph support 10 is pivotally supported at one point on the vehicle body 2 by a pin 11 so as to be freely rotatable, and a guide rail 12 laid on the upper surface of the vehicle body 2 is provided on the back side. A roller 13 that rolls above is mounted rotatably. Therefore, when the connecting rod 8 moves in the width direction of the vehicle body 2, one side of the pantograph support 10 moves along the guide rail 12 around the pin 11 on the other side.

FIG. 4 is a perspective view of a pantograph for a railway vehicle according to a first embodiment of the present invention.
When an inclination occurs between the vehicle body 2 and the bogie frame 1 from the normal position shown in (a), as shown in FIGS. 4B and 4C, the link 6 moves in a direction opposite to the inclination of the vehicle body 2. Rotates, and the connecting rod 8 connected to the pantograph support 10 moves in the direction opposite to the widthwise displacement of the upper surface of the vehicle body due to the inclination. Due to the movement of the connecting rod 8, the pantograph 9 is always positioned on the vertical line of the bogie 1 regardless of the inclination of the vehicle body 2.

On the other hand, in the railcar pantograph attitude holding mechanism according to the first aspect of the present invention, the vertical movement between the vehicle body 2 and the bogie frame 1 from the normal position shown in FIG. When the relative displacement occurs only in the direction, FIG.
As shown in (c), since the torsion bars 4 (arms 5) on both sides rotate together, the pantograph 9 does not move.

When the relative displacement between the vehicle body 2 and the bogie frame 1 simply occurs in the vehicle body width direction, for example, as shown in FIG. Since the arm 5 rotates upward by the amount of the inclination, the pantograph 9
Does not move.

As described above, in the railcar pantograph attitude holding mechanism according to the first aspect of the present invention, the pantograph 9 corresponds to only the relative tilt displacement between the vehicle body 2 and the bogie frame 1. Can be moved and held on the vertical line of the bogie frame 1.

The mechanism for maintaining the attitude of the pantograph for a railway vehicle according to the present invention is not limited to the one shown in FIG. 1, but may be the one shown in FIG. That is, what is shown in FIG.
The one end of the lower link 14 is pivotally supported at the tip of the arm 6, and the other end of the lower link 14 is provided in the posture holding mechanism for a pantograph for a railway vehicle according to the present invention. Is pivotally connected to one end of a lever 15 whose center portion is pivotally connected to the lower surface of the vehicle body 2, and the other end of the lever 15 is pivotally connected to one end of the link 6 so as to be freely rotatable. . This is a railcar pantograph attitude holding mechanism according to the present invention corresponding to claim 2.

According to the pantograph attitude maintaining mechanism for a railway vehicle according to the present invention corresponding to the second aspect, the lower side (bogie side) of the vehicle body 2 to the upper side (pantograph side) of the vehicle body 2.
In addition, since there is a degree of freedom in the arrangement of the link mechanism for transmitting the tilt displacement between the vehicle body 2 and the bogie frame 1, the passenger compartment space of the vehicle body 2 can be more easily secured.

In the case of the pantograph attitude maintaining mechanism for a railway vehicle according to the present invention corresponding to claim 2,
When a tilt occurs between the vehicle body 2 and the bogie frame 1 from the normal position shown in FIG. 7A, the link 6 rotates in the same direction as the tilt of the vehicle body 2 as shown in FIG. Then, the connecting rod 8 connected to the pantograph support 10 moves in a direction opposite to the displacement in the width direction of the upper surface of the vehicle body due to the inclination. By the movement of the connecting rod 8, the pantograph 9 is always positioned on the vertical line of the bogie 1 regardless of the inclination of the vehicle body 2.

Further, the posture holding mechanism of the pantograph for a railway vehicle according to the present invention is not limited to the one shown in FIGS. 1 and 2, but may be the one shown in FIG. That is, what is shown in FIG. 3 is, for example, the pivotal joint between the connecting rod 8 and the pantograph support base 10 of the railcar pantograph attitude holding mechanism according to the present invention corresponding to claim 1 shown in FIG. Elastic body 1
6, the connecting rod 8 is divided into two parts via an elastic body 17 such as a coil spring. In such a configuration, the elastic body 16 can prevent the vibration component of the tilt displacement between the bogie frame 1 and the vehicle body 2 from being directly transmitted to the pantograph 9, and the elastic body 17 can prevent the vibration component of the vehicle body 2 from moving. The displacement difference due to a manufacturing error of the link 6 disposed on the left and right of the link 6 can be absorbed. This is the attitude holding mechanism of the pantograph for a railway vehicle according to the present invention corresponding to claim 3.

[0033]

As described above, the rail car pantograph attitude holding mechanism according to the present invention does not require complicated maintenance and inspection like a hydraulic mechanism, and uses only a mechanical link mechanism and a bogie. The pantograph can be displaced in a direction opposite to the inclination of the vehicle body in accordance with the displacement of the vehicle body with respect to the frame, so that the pantograph can always be positioned on the vertical line of the track.

Also, in the pantograph attitude maintaining mechanism for a railway vehicle according to the present invention, the up-and-down movement between the vehicle body and the bogie frame is achieved.
Since the pantograph does not move with respect to the displacement in the left-right direction, there is no malfunction and the reliability is high even when traveling in a section where the vehicle body does not tilt.

[Brief description of the drawings]

FIG. 1 is a schematic explanatory view of a posture holding mechanism of a pantograph for a railway vehicle according to the present invention corresponding to claim 1;

FIG. 2 (a) is a schematic explanatory view of a railcar pantograph attitude holding mechanism according to the present invention corresponding to claim 2,
(B) is an A view on the arrow in (a).

FIG. 3 is a schematic explanatory view of a posture holding mechanism of a pantograph for a railway vehicle according to the present invention corresponding to claim 3;

FIGS. 4A and 4B are diagrams for explaining the operation of the vehicle equipped with the railcar pantograph attitude holding mechanism according to the first aspect of the present invention when the vehicle is tilted, where FIG. FIG. 7C is a diagram illustrating a case where the camera is tilted to the left side and FIG.

FIGS. 5A and 5B are diagrams for explaining the operation of a vehicle equipped with the railcar pantograph attitude holding mechanism according to the first aspect of the present invention when the vehicle is vertically displaced, wherein FIG. It is a figure which shows the time when it displaced downward, and when it displaced upward.

FIG. 6 is a view for explaining an operation when a vehicle equipped with the railcar pantograph attitude holding mechanism according to the first aspect of the present invention is displaced in the left-right direction.

FIGS. 7A and 7B are diagrams for explaining an operation of a vehicle equipped with a railcar pantograph attitude holding mechanism according to the second aspect of the present invention when the vehicle is tilted, where FIG. It is a figure which shows the time when it inclines to the left side.

[Explanation of symbols]

 Reference Signs List 1 bogie frame 2 body 4 torsion bar 5 arm 6 link 7 bell crank 8 connecting rod 10 pantograph support 11 pin 14 lower link 15 lever 16 elastic body 17 elastic body

Claims (3)

[Claims] An arm having a base end integrally attached to both ends of a torsion bar rotatably mounted on a bogie frame, and one end side rotatably mounted at the distal end of these arms. One end is pivotally connected to the other end of these links, and the center bent portion is connected to the bell crank pivotally mounted on the upper side of the vehicle body so that the other ends of these bell cranks can rotate freely. Connecting rod, and one side is pivotally attached to the center of the connecting rod,
On the other side, a pantograph support mechanism for a railway vehicle, comprising a pantograph support pivotally supported at one point on the vehicle body so as to be freely rotatable. 2. The pantograph attitude maintaining mechanism for a railway vehicle according to claim 1, wherein a lower link whose one end is pivotally supported at a tip end of the arm between the arms, and the other end of the lower link. A railroad vehicle characterized by being rotatably pivotally connected to one end of the link and one end of the link so as to be freely rotatable, and having a lever pivotally mounted at the center to the lower surface of the vehicle body. Pantograph attitude holding mechanism. 3. The railway vehicle according to claim 1, wherein an elastic body is interposed at a pivotal connection between the connecting rod and the pantograph support, and the connecting rod is divided into two parts via the elastic body. Pantograph attitude holding mechanism.