JPS59186177U

JPS59186177U - Rear wheel steering lock device

Info

Publication number: JPS59186177U
Application number: JP8104483U
Authority: JP
Inventors: 松山　良一
Original assignee: 株式会社小松製作所
Priority date: 1983-05-31
Filing date: 1983-05-31
Publication date: 1984-12-11

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

図面は本考案の実施例を示す回路図である。１は操向切換弁、３は操向弁、５．６は油圧シリンダ、
７は操向モードスイッチ、１０はロックピン、１１はシ
リンダ、１２はロック操作弁、１２ａ、１２ｂはソレノ
イド、１３はロック確認スイッチ、１４は解除確認スイ
ッチ、１５はセンタ検出スイッチ、１６は後輪操向スイ
ッチ、１７は電源、１８８〜１８ｅはリレー、２１．２
２はインジケータ。The drawing is a circuit diagram showing an embodiment of the present invention. 1 is a steering switching valve, 3 is a steering valve, 5.6 is a hydraulic cylinder,
7 is a steering mode switch, 10 is a lock pin, 11 is a cylinder, 12 is a lock operation valve, 12a, 12b are solenoids, 13 is a lock confirmation switch, 14 is a release confirmation switch, 15 is a center detection switch, 16 is a rear wheel Steering switch, 17 is power supply, 188-18e is relay, 21.2
2 is an indicator.

Claims

[Claims for Utility Model Registration] The present invention has a hydraulic cylinder 5.5 for front wheel steering and a hydraulic cylinder 6.6 for rear wheel steering. 5.
6. 6 and the steering valve 3, there is a neutral position a in which pressure oil is sent only to the hydraulic cylinder 5.5 for steering the front wheels, and a neutral position a that sends pressure oil only to the hydraulic cylinder 5.5 for steering the front wheels, and a neutral position a that sends pressure oil only to the hydraulic cylinder 5. 6. 6. An electromagnetic steering switching valve 1 having a four-wheel steering operating position, a crab steering operating position, and a position C, which sends pressure oil to the four-wheel steering operating position C, is installed. A steering mode switch 7 is connected to the electromagnetic solenoid, and a lock pin 10 for locking rear wheel steering operation is connected, and an electromagnetic lock operation is provided between a hydraulic cylinder 11 that operates this lock pin 10 and a hydraulic power source. In the rear wheel steering lock device that includes the valve 12, the lock side terminal 16b and the release side terminal 16
A rear wheel steering switch 16 having an input signal C is provided with its input side terminal 16a connected to the power source 17, and the input side of the steering mode switch 7 is connected to the release side terminal 16C of this rear wheel steering switch 16. At the same time, the release solenoid 12b of the lock operation valve 12 is connected via the first relay 188, which is turned ON when the lock pin 10 is in the locked state and turned OFF when released, and is also connected to the lock side terminal 16b.
The second relay 18b is turned ON when the rear wheels are in a straight-ahead state, and the second relay 18b is turned ON when the lock pin 10 is in a released state.
The lock solenoid 12a of the lock operation valve 12 is connected through the third relay 18C, and the first indicator 21 is connected to the OFF side terminal of the first relay 18a, and the first indicator 21 is connected to the OFF side terminal of the first relay 18a. A second indicator 22 is connected to the locking knob 12a of the operating valve 12, and the lock operating valve 1 is connected to the first indicator 21.
When the second locking solenoid 12a is energized. The power supply is connected via a fourth relay 18d that is turned on when the rear wheels are not in a straight-ahead state, and a fifth relay that is turned on when the rear wheels are not in a straight-ahead state is connected to a fourth relay 18d that is turned on when the rear wheels are not in a straight-ahead state.
A rear wheel steering lock device characterized in that the lock side terminal 16b of the rear wheel steering switch 16 is connected via a relay 188.