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Dump truck

A technology of dump truck and body frame, applied in the field of dump truck, can solve the problems of fixation and less frequency of use

Active Publication Date: 2021-11-19
NIHON KENKI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Such an emergency braking system is rarely used, so the spool of the solenoid valve may become stuck due to the influence of pollutants, etc.

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0021] Embodiments of the dump truck of the present invention will be described using the drawings. figure 1 It is a side view of the embodiment 1 of the dump truck. Further the operator viewpoint, all around this specification unless otherwise specified, take the places to operate the dump truck 1 as a reference.

[0022] like figure 1 , The dump truck 1 according to the present embodiment mainly includes: body frame 2; 3 pair of front wheels, left and right ends thereof via the suspension 3S is rotatably supported by the front portion of the vehicle body frame 2; pair of rear wheels 4, which 4S via the suspension to the vehicle body rotatably supported by right and left rear ends of the frame 2; container 5, which can be raised and lowered in the vehicle body frame 2 is supported; and a cab 6, which the operator of the dump truck 1 for an operator riding.

[0023] 3 is a pair of front wheels by a steering operation of the steering wheel steering angle changes. 4 is a pair of rea...

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PUM

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Abstract

The invention provides a dump truck capable of implementing an actuation test of an emergency braking system at appropriate timing. The dump truck is provided with: an emergency braking system for front wheels and rear wheels, which includes an accumulator for accumulating hydraulic oil supplied from a hydraulic pump, a braking device that is actuated by the hydraulic oil supplied from the accumulator, and a solenoid valve for opening and closing a passage of the hydraulic oil from the accumulator to the braking device; and a control device that performs front test processing and rear test processing alternately (S16 / S18) when determined that the dump truck is stopped (S11: Yes), a truck bed is in a laid down position (S12: Yes), and loading on the truck bed has been completed (S15: Yes / S17: Yes).

Description

Technical field [0001] The present invention relates to an emergency brake system having a dump truck. Background technique [0002] In the autonomous dump truck mounted wheel brake an emergency braking system in an emergency. Emergency braking system, for example, by opening a solenoid valve, the pressure accumulator in the accumulator of the working oil supplied to the hydraulic brake device. [0003] Such a frequency less emergency braking system, therefore, due to the influence of contaminants, the solenoid valve spool possible sticking. As a technique to solve such a technical problem, for example, a dump truck is disclosed in Patent Document 1, the parking brake is actuated when the vehicle is stopped. This prevents sticking of the solenoid valve. [0004] Prior art literature [0005] Patent literature [0006] Patent Document 1: Japanese Patent Publication No. 5,838,255 Inventive content [0007] Subject to solve problems [0008] However, when the timing of the emergenc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T17/22B60T13/14B60P1/04
CPCB60T17/22B60T13/14B60P1/04B60T2270/40B60T2230/00
Inventor 福士真之斋藤真二郎手塚大基
Owner NIHON KENKI CO LTD