TROLLEY-TYPE TRUCK - HITACHI ENG SERVICE

Title:

TROLLEY-TYPE TRUCK

Document Type and Number:

WIPO Patent Application WO/2013/124994

Kind Code:

A1

Abstract:

A trolley-type truck is provided with a pantograph (4) and travels by using a trolley mode for traveling by means of the power obtained from an overhead line, and a non-trolley mode for traveling without obtaining power from the overhead line. The pantograph is provided with an underframe (6), a bottom frame (8) and a top frame (10) slidably attached to the underframe, and a collector shoe (5) supported by the tip of the top frame. Moreover, a securing member (25) disposed toward the tip of the top frame and for securing the pantograph, a key device (23) disposed on the underframe and for securing the securing member for securing the pantograph by forcibly pressing down the securing member, and a key receiver (24) disposed on the underframe in order t receive the securing member are also provided. When a frame assembly constituting the bottom frame and the top frame is folded, the securing member becomes seated in the key receiver and is pressed by means of the key device, thereby forcibly securing the frame assembly to the underframe. As a consequence, it is possible to prevent the pantograph from deforming or becoming damaged when the truck travels in the non-trolley mode.

More Like This:

JPH0756561	[Name of device] Pantograph for railway vehicles
JP4782597	Pantograph contact force fluctuation reduction method and pantograph

Inventors:

NAKAJIMA ATSUSHI (JP)
KANAZAWA HIROYUKI (JP)
YASUDA TOMOHIKO (JP)

Application Number:

PCT/JP2012/054327

Publication Date:

August 29, 2013

Filing Date:

February 22, 2012

Export Citation:

Click for automatic bibliography generation Help

Assignee:

HITACHI ENG SERVICE (JP)
HITACHI CONSTRUCTION MACHINERY (JP)
NAKAJIMA ATSUSHI (JP)
KANAZAWA HIROYUKI (JP)
YASUDA TOMOHIKO (JP)

International Classes:

B60L5/24; B60L50/13

Domestic Patent References:

WO2011135870A1

2011-11-03

Foreign References:

JP2004304895A	2004-10-28
JP2007028814A	2007-02-01
JPH09107603A	1997-04-22
JPH0363001U	1991-06-20

Attorney, Agent or Firm:

POLAIRE I. P. C. (JP)
Polaire Intellectual Property Corporation (JP)

Download PDF:

View/Download PDF PDF Help

Claims:

Previous Patent: ENERGY-CONSERVATION SUPPORT SYSTEM AND METHOD FOR DISPLAYING ENERGY-CONSERVATION SUPPORT SCREENS

Next Patent: PANTOGRAPH CONTROL DEVICE FOR TROLLEY-TYPE TRUCK