JP3549235B2 - Pantograph device for electric vehicle - Google Patents

Description

[0001]
[Industrial applications]
The present invention relates to a pantograph apparatus for an electric vehicle, and more particularly, to a pantograph apparatus that lifts and lowers a current collector boat with a lift cylinder device and includes a storage mechanism for the lift cylinder device.
[0002]
[Prior art]
The pantograph device of an electric vehicle is a vehicle component that introduces electric power from the overhead line to the vehicle, but it must be large enough to follow the position range of the overhead line where the height and deviation change along the track, and a vehicle is required. Structure that allows sufficient current to flow according to the power generated by the vehicle. In addition, it is necessary to have sufficient strength against air resistance and lift during traveling.
[0003]
As a conventional pantograph device, a diamond-shaped frame structure in which a frame body with a current collector boat attached to the upper part is assembled in a diamond shape on a base frame attached to the roof of the vehicle via insulators, and it is moved up and down by a spring (See JP-A-62-68002 and JP-A-63-92202) and those having a Z-shaped framework structure. Then, when the pantograph device is not used, when it is out of order, at the time of inspection, or the like, the frame of the pantograph device can be folded.
[0004]
[Problems to be solved by the invention]
In the above-described conventional pantograph device, the wind pressure applied to the frame is large, the wind noise is large, and the weight is heavy and the structure is complicated, so that maintenance is also difficult. Therefore, it is conceivable to use a lift cylinder device as an elevating device for the current collector boat. However, in such a case, there is a limit to reducing the height of the lift cylinder device to the minimum reduction time or less.
[0005]
[Means for Solving the Problems]
Plurality invention to solve the above problems, in the pantograph device for an electric vehicle which enables lowering the current collector collector head for introducing the power from the overhead wire to the vehicle, to the pantograph device, mounted on the roof of the vehicle Insulator, a frame mounted on the insulator, a base unit provided on the frame, a telescopic lift cylinder device erected on the base unit, and a lift cylinder device. A base unit provided on an underframe, a support frame mounted on the base, and a support shaft rotatably mounted on the support frame. And a main arm attached to the support shaft and to which a lift cylinder device is mounted. In order to swing the main arm, a sub arm is mounted on the support shaft. A jack cylinder is interposed between the sub arm and the base side, the sub arm and the jack cylinder are covered with a cover, and the jack cylinder is operated to swing the sub arm and the main arm to thereby lift the lift cylinder device. To raise and lower the current collector boat, or to lower the lift cylinder device to the retracted state .
[0006]
[Action]
The current collector hull is raised and lowered by a lift cylinder device that can be vertically extended and contracted by an external fluid supply source, so the structure is simple, the influence of wind pressure is reduced, wind noise is reduced, and the weight is reduced. The lift cylinder device can be stored below the minimum reduced height, and the pantograph device can be lowered when not in use, at the time of failure, at the time of inspection, and the like.
[0007]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. Here, FIG. 1 is a side view of a pantograph device for an electric vehicle to which the present invention is applied, FIG. 2 is a plan view of the device, FIG. 3 is a front view of the device, FIG. FIG. 5 is a side view of the lift cylinder device of the embodiment in a minimum contracted state, and FIG. 6 is a side view of the lift cylinder device of the embodiment in a retracted state.
[0008]
In the pantograph device according to the present invention, as shown in FIGS. 1, 2 and 3, a frame 3 is mounted on four insulators 2 mounted on a roof 1 of an electric vehicle. A base unit 4 is provided on the base unit 4, a vertically extensible lift cylinder device 5 is erected on the base unit 4, and a current collector boat 6 is attached to an upper end of the lift cylinder device 5. A sliding plate 7 is attached.
[0009]
The base unit 4 has a main arm 12 and a sub arm 13 fixed to a support shaft 14 at a predetermined angle on a base 11 provided on the underframe 3, and is pivotally supported on a support frame 15. I have.
Further, the main arm 12 has a downwardly projecting portion 12a as shown in FIG. 4, and this projecting portion 12a faces a hole 11a formed in the base 11, and further from the side opposite to the projecting portion 12a of the main arm 12. A concave portion 12b is formed, a lift cylinder device 5 is implanted in the concave portion 12b, and further, supply / exhaust passages 39 and 40 are formed in the main arm 12.
[0010]
As shown in FIGS. 1, 2 and 3, a jack cylinder 17 is interposed between the sub-arm 13 and a support frame 16 mounted on the base 11. In the jack cylinder 17, a piston 19 is slidably fitted in a cylinder 18, a rod 20 is fixed to the piston 19, and an end of the rod 20 is attached to the sub-arm 13 by a support shaft 21. Are rotatably supported by the support frame 16 on a support shaft 22.
[0011]
A lock bracket 23 for storing the lift cylinder device 5 is provided on a side portion of the base 11, and an end of the main arm 12 in a horizontal state is provided on the base 11 to hold the lift cylinder device 5 in an upright state. A lock mechanism 24 for locking the parts is provided, and a cover 25 for covering these members is provided.
[0012]
As shown in FIG. 7, the lock mechanism 24 has a lock piece 27 swingably attached to a lock mechanism main body 26, and one end of the lock piece 27 is connected to a rod 29 of a cylinder 28. The rod 29 is lowered by supplying and compressing air into the inside, the lock piece 27 is raised to the position shown by the imaginary line in the figure to be in the unclamped state, and when the supply of air is cut, the rod 29 is resiliently moved by the spring force of the spring. The lock piece 27 is raised and lowered to the position shown by the solid line in the drawing to be in a clamped state.
[0013]
On the other hand, the lift cylinder device 5 is provided with a lift air cylinder unit 31, a lower slide cylinder 32 and an upper slide cylinder 33 provided outside the lift air cylinder unit 31, and provided outside these slide cylinder units 32, 33. It comprises a lower protector 34 and an upper protector 35.
[0014]
As shown in FIG. 4, the lift air cylinder unit 31 has a piston 37 attached to the upper end of a hollow rod 38 having a double structure slidably fitted in the lift cylinder 36, and the piston 37 Two air chambers are defined, and compressed by supplying air or the like to the lower chamber in the lift cylinder 36 through the air passage 39 and the outer passage of the hollow rod 38 having a double structure, thereby reducing the air passage 40 and the double structure. By supplying air and the like to the upper chamber in the lift cylinder 36 through the inner passage of the hollow rod 38, the current collector boat 6 can be extended and lowered.
[0015]
In the pantograph device according to this embodiment, when used, the lift cylinder device 5 is set upright as shown in FIG. 1 and the end of the main arm 12 is locked by the lock mechanism 24 to thereby lift the lift cylinder device. 5 can be held upright and the current collector boat 6 can be raised and lowered as described above. This simplifies the structure of the lifting device of the current collector boat, reduces the effect of wind pressure, reduces wind noise, and reduces weight.
[0016]
Then, when not in use, at the time of failure, at the time of inspection, etc., the lift cylinder device 5 is first brought into a minimum contracted state as shown in FIG. 5, and then the lock of the main arm 12 by the lock mechanism 24 is released. By operating and extending the rod 20, the lift cylinder device 5 can be tilted in the front-rear direction of the vehicle and mounted on the lock bracket 23 via the sub arm 13 and the main arm 12, as shown in FIG. The lift cylinder device 5 can be stored in a state lower than the height at the time of the minimum reduction.
[0017]
【The invention's effect】
As described above, according to the present invention, the current collector hull is raised and lowered by the vertically expandable and contractible lift cylinder device by the external fluid supply source, and the lift cylinder device is set to a state of a height equal to or less than the minimum reduction. A storage mechanism is provided to reduce the effects of wind pressure, reduce wind noise and reduce weight, simplify the structure, facilitate maintenance, and when not in use, at the time of failure, during inspection, etc. Can be stored with the pantograph device lowered.
[Brief description of the drawings]
FIG. 1 is a side view of a pantograph device of an electric vehicle to which the present invention is applied. FIG. 2 is a plan view of the device. FIG. 3 is a front view of the device. FIG. FIG. 6 is a side view of the lift cylinder device of the embodiment in a minimum contracted state. FIG. 6 is a side view of the storage state of the embodiment in a retracted state. FIG. 7 is a perspective view of a lock mechanism.
DESCRIPTION OF SYMBOLS 1 ... Vehicle roof, 2 ... Insulator, 3 ... Underframe, 4 ... Base unit, 5 ... Lift cylinder device, 6 ... Current collector boat, 7 ... Slipped plate, 12 ... Main arm, 13 ... Sub arm, 17 ... Jack Cylinder, 23: Lock bracket, 24: Lock mechanism, 31: Lift cylinder unit, 32: Lower slide cylinder, 33: Upper slide cylinder, 34: Lower protector, 35: Upper protector, 36: Lift cylinder, 37: Piston, 38 ... hollow rod.

Claims (2)

In a pantograph device of an electric vehicle, which can move up and down a current collecting boat body to introduce electric power from an overhead line to a vehicle ,
The pantograph apparatus includes a plurality of insulators mounted on a roof of the vehicle, a frame mounted on the insulators, a base unit provided on the frame, and an erecting unit mounted on the base unit. Telescopic lift cylinder device, comprising the current collector boat attached to the upper end of the lift cylinder device,
The base unit includes a base provided on the underframe, a support frame mounted on the base, a support shaft rotatably mounted on the support frame, and a lift cylinder mounted on the support shaft. It consists of a main arm on which the device is mounted,
To swing the main arm, a sub-arm is attached to the support shaft, a jack cylinder is interposed between the sub-arm and the base side, and these sub-arms and the jack cylinder are covered with a cover.
By actuating the jack cylinder, by swinging the sub arm and the main arm, causing the lifting cylinder device raises and lowers the collector collector head, or, to store the state to defeat the lifting cylinder device A pantograph device for an electric vehicle. In pantograph apparatus for an electric vehicle according to claim 1, the pantograph device, and Bei obtain this and said locking mechanism for locking the main arm in the horizontal state to hold the lifting cylinder device in the standing state electric Pantograph device for vehicles.

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