JPH10108302A - Electric operation type pantograph - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily make an electric rolling stock airless, eliminate an air wiring inside the rolling stock and at the same time reduce the sound of a compressor by operating a pantograph as an electrically-driven type using a linear motor. SOLUTION: A motor 19a is used as a power source, and a horizontally moving shaft 19c is moved left and right on the paper through reduction gears 19b. A freely turnable coupling part (b) is provided at its one end, and a mechanism into which an insulating material 20 and a long-hole link 16 are integrated is adopted as an operating device. In the constitution, a main shaft 13 is made to pass through the long-hole link 16 and a pin 15 at the tip of a fixedly connected lever 6 is made to pass through the long-hole link 16. With the rise of a pantograph, a horizontally moving shaft 19c is moved in the right direction by the rotation of the motor 19a through the reduction gears 19b, and the pantograph is made to rise along a moving quantity with the power of a main spring. On the other hand, at its descent, the horizontally moving shaft 19c is moved in the left direction by reversing the rotation of the motor 19a to pull the lever 6 against the main spring, so that the pantograph is descended to bring it into the state of being folded.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pantograph for collecting power in an electric railway, and more particularly to an electric pantograph for electrically moving up and down the pantograph.

[0002]

2. Description of the Related Art In general, a pantograph for an electric railway mainly has a rhombus (also referred to as a diamond), a lower frame crossing type, and a single arm type. This pantograph is placed in a lowered position to keep the current collector boat away from the trolley wire during no power collection. During power collection, the pantograph is raised to press the current collection boat against the trolley wire. This operation is generally performed pneumatically. Next, details of the operation will be described with reference to FIG. 3 taking a diamond-shaped pantograph as an example. The pantograph is similar to the above-mentioned three types, but a current collecting boat 1 for collecting current from a trolley wire, a frame supporting the same (upper frame 2 and lower frame 3), and a main spring for applying a rotational force to the main shaft to raise the pantograph. 4 is the main mechanism.

[0003] The pantograph is folded in a non-collecting state, but applies a reverse rotation force to the main shaft 13 against the force of the main spring 4. That is, the pantograph is lowered from the ascending state by the operation of the reverse rotation force, and becomes the folded state. This reverse rotation force is performed by the descending cylinder 7. Pressurized air is sent from the air hose 8 to the descending cylinder 7. A roller 5 is provided at the tip of the rod of the descending cylinder, and pushes a lever 6 fixed to the main shaft 13. At this time, the pantograph descends, and the ceiling pipe (round pipe) 21 at the top of the framework hooks on the hook 9.
Thereafter, the pressurization of the descending cylinder 7 is stopped. That is, hook 9
The folded state is maintained by hanging the ceiling tube 21 on the ceiling.

[0004] Next, the raising operation will be described. To release the hook 9 from the ceiling pipe 21, air pressure is sent from the air hose 12 to operate the hook cylinder 11. The rod of the hook cylinder 11 pushes the lower end of the hook, and the ceiling pipe 21 is detached from the hook 9 by tilting the hook 9, and the main spring force raises the pantograph. There are currently two types of hook removal systems, one is the pneumatic type described above, and the other is an electric type, which uses an electromagnetic solenoid instead of a pneumatic cylinder. The action on the hook is exactly the same, pushing the lower end of the hook.
Of course, it is installed insulated from the high voltage part of the pantograph by an insulator.

[0005]

However, in the conventional pantograph raising and lowering operations, there are problems in various points such as the necessity of an air pipe and the noise of a compressor. The present invention has been made in view of the above points, and an object of the present invention is to provide an electrically operated pantograph that eliminates air piping and noise.

[0006]

In other words, the means for achieving the object comprises a sliding plate which is in contact with a trolley wire, a current collector mounted with a sliding plate, and a framework for supporting the current collector. In a pantograph, a linear motor, a long hole link having a long hole connected to a horizontal movement axis of the linear motor via an insulating material, and engaging with the long hole link to raise and lower the pantograph. The configuration is as follows. Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

[0007]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is an explanatory view of a main part of FIG. 1. In FIG. It is the part that has. 1 and 2, a linear motor 19, an elongated link 16 having an elongated hole a connected to a horizontal moving shaft 19c of the linear motor 19 via an insulating material 20, and a link with the elongated hole link 16. In combination, the pantograph is configured to move up and down.

First, a motor 19a is used as a power source, and a speed reducer is used.
The horizontal movement axis 19c is moved right and left on the paper surface via 19b.
A mechanism in which a rotatable coupling part b is provided at one end and the insulating material 20 and the elongated hole link 16 are integrated is referred to as an operating device. Further, the operation device has a configuration in which a pin 15 at the tip of the lever 6 having the long hole link 16 fixedly connected to the main shaft 13 is passed through the long hole link 16. Here, the linear motor 19 is an integrated motor comprising a motor 19a, a speed reducer 19b, and a horizontal moving shaft 19c.

Next, the operation of raising and lowering the pantograph and the operation of the operating device will be described. Rise is motor 19
The horizontal movement shaft 19c is moved rightward in FIGS. 1 and 2 through the speed reducer 19b by the rotation of a. As a result, the pantograph rises along the amount of movement by the force of the main spring 4. The descent is achieved by reversing the rotation of the motor 19a.
The horizontal movement shaft 19c moves to the left, pulls the lever 6 against the main spring 4, and lowers the pantograph to bring it into a folded state.

The long hole a of the long hole link 16 is provided so that the lifting / lowering device is not affected at all when the pantograph moves up and down within the height range of the trolley wire. The linear drive unit may be applied to a mechanism such as a screw / nut type or a rack / pinion type.

The operation and stop of the motor 19a are controlled by the horizontal movement shaft 19.
The direct current detection method in which an electric limit switch is attached to both ends of the movement of c, and the movement of the linear drive reaches the stopper, and when the load weight increases, the motor current suddenly increases. A method of detecting the current and using it as a stop signal is conceivable. Further, the linear motor may be separated from the pantograph and installed separately.

[0012]

As described above, according to the present invention, the operation of the pantograph is electrically operated, so that the electric vehicle can be easily air-conditioned. At present, the major purpose of airless vehicles is to eliminate air piping in the vehicle and reduce compressor noise, etc., in order to respond to future trends in electric railways. Pantographs are extremely useful in practice.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing one embodiment of the present invention.

FIG. 2 is an explanatory diagram of a main part of FIG. 1;

FIG. 3 is a configuration diagram showing an example of the related art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Current collection boat 2 Upper frame 3 Lower frame 6 Lever 13 Main shaft 15 Pin 16 Long hole link 19 Linear motor 19a Motor 19b Reduction gear 19c Horizontal movement axis a Long hole b Joint 20 Insulation material

Claims (1)

[Claims] 1. A linear motor, and a horizontal moving shaft of the linear motor, in a pantograph comprising a sliding plate contacting and sliding with a trolley wire, a current collector mounted with the sliding plate, and a framework supporting the current collector. An electrically operated pantograph characterized by comprising a long hole link having a long hole connected to the pantograph via an insulating material, and engaging the long hole link to raise and lower the pantograph.