Title:
転圧車両
Document Type and Number:
Japanese Patent JP6774450
Kind Code:
B2
Abstract:
To provide a compaction vehicle with a high degree of reliability which makes it possible to surely restrict the travelling at the time of coming into contact with a guard fence of an obstacle.SOLUTION: A brake force of a negative brake 34 is exerted on front and rear hydraulic motors 7, 8, and the hydraulic oil from the charge pump 19 driven by an engine 17 is supplied to a brake release cylinder 34c of the negative brake 34 through a forced exhaust valve 39 at the communication position, and the brake force is released to enable the vehicle 1 to travel. Guard fences 40 and 41 that can swing to the front and rear of the vehicle 1 are provided and connected to the forced exhaust valve 39 via a wire cable 47 and a push rod 48, and the swing of the guard fences 40 and 41 due to contact with the obstacle is mechanically transferred to the forced exhaust valve 39 so as to switch the position to the drain position.SELECTED DRAWING: Figure 1
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| WO/2023/119714 | WORK MANAGEMENT SYSTEM, AND WORK MANAGEMENT METHOD |
Inventors:
Nami Takeda
Okazaki Tetsuro
Masakazu Suzuki
Okazaki Tetsuro
Masakazu Suzuki
Application Number:
JP2018039942A
Publication Date:
October 21, 2020
Filing Date:
March 06, 2018
Export Citation:
Assignee:
Hitachi Construction Machinery Co., Ltd.
International Classes:
E01C19/23; B60T15/04
Domestic Patent References:
| JP63194912U | ||||
| JP2005256478A | ||||
| JP2005075222A | ||||
| JP2012149484A | ||||
| JP2012241497A | ||||
| JP2014206022A |
Foreign References:
| KR101239402B1 |
Attorney, Agent or Firm:
Koji Nagato