JPS6432276U

JPS6432276U -

Info

Publication number: JPS6432276U
Application number: JP12687687U
Authority: JP
Priority date: 1987-08-20
Filing date: 1987-08-20
Publication date: 1989-02-28

Description

[Brief explanation of drawings]

図面は本考案の一実施例を示し、第１図はオー
ルテレンクレーン車の外観を示す側面図、第２図
は前輪をリンク機構により操舵する、キヤリヤハ
ウス側の操舵装置の構成を示す側面図、第３図は
同操舵装置の上面図、第４図は操舵装置の油圧回
路図、第５図はリアステアリングロツク機構の構
成を示す上面図、第６図は同リアステアリングロ
ツク機構の正面図、第７図は第６図の矢印から
見た係止ピン１８２の部分断面図、第８図及び第
９図は操舵装置の制御回路結線図である。１……オールテレンクレーン車、３……キヤリ
ヤハウス、４……クレーンハウス、５……アウト
リガ、５ａ……アウトリガボツクス、５ｂ……ス
ペーサ、６……アウトリガ、７……前輪、８……
後輪、１０……メインフレーム、１４，１６……
アクスル、３０……内燃エンジン、３２……変速
装置、４０……ステアリングホイール、４０ａ，
４０ａ……ステアリングシヤフト、４１……Ｌジ
ヨイント、４２……回転ロツド、４４……セミイ
ンテグラルギアボツクス、４４′……フローコン
トロールバルブ、４５……ピツトマンアーム、４
６……ドラツグリンク、４７……ナツクルアーム
、５４，５６，６４，６６……ステアリングシリ
ンダ、７０……メインポンプ、７１……パイロツ
ト用ポンプ、７２……エマージエンシポンプ、７
７……オイルタンク、８０……流量調整弁、８３
……切換弁、１０２，１０４，１０６，１０８，
１１２……電磁切換弁、１１０……フローコント
ロールバルブ、１５０……ステアリングホイール
、１８１……ロツク用ロツド、１８１ａ……ロツ
クプレート、１８２……係止ピン、１８３……エ
アシリンダ、１８３ａ……ピストンロツド、１８
３ｂ……吊り金具、１８３ｃ……ピン、１８８…
…ロツク解除検出スイツチ、１８９……ロツク検
出スイツチ、１９０……ニユートラル検出スイツ
チ、２００……リアステアリングロツクスイツチ
（ＲＳＬスイツチ）、２０１……ロツク解除表示
ランプ、２０２……ステアリングモード切換スイ
ツチ（ＳＭＳスイツチ）、２１０……リアステア
リングロツクスイツチ（ＲＳＬスイツチ）、２１
１……ロツク解除表示ランプ、２１２……ステア
リングモード切換スイツチ（ＳＭＳスイツチ）、
２１６……逆操舵補正スイツチ、２２０，２２２
，２２６，２２８，２３４，２３６……リレー、
２３２……変速用制御回路。 The drawings show one embodiment of the present invention; FIG. 1 is a side view showing the appearance of an all-terrain crane; FIG. 2 is a side view showing the configuration of a steering device on the carrier house side that steers the front wheels by a link mechanism; 3 is a top view of the steering device, FIG. 4 is a hydraulic circuit diagram of the steering device, FIG. 5 is a top view showing the configuration of the rear steering lock mechanism, and FIG. 6 is a front view of the rear steering lock mechanism. FIG. 7 is a partial sectional view of the locking pin 182 seen from the arrow in FIG. 6, and FIGS. 8 and 9 are control circuit connection diagrams of the steering device. 1... All-terrain crane vehicle, 3... Carrier house, 4... Crane house, 5... Outrigger, 5a... Outrigger box, 5b... Spacer, 6... Outrigger, 7... Front wheel, 8...
Rear wheel, 10... Main frame, 14, 16...
Axle, 30...Internal combustion engine, 32...Transmission, 40...Steering wheel, 40a,
40a... Steering shaft, 41... L joint, 42... Rotating rod, 44... Semi-integral gearbox, 44'... Flow control valve, 45... Pitman arm, 4
6...Drag link, 47...Knuckle arm, 54, 56, 64, 66...Steering cylinder, 70...Main pump, 71...Pilot pump, 72...Emergency pump, 7
7... Oil tank, 80... Flow rate adjustment valve, 83
...Switching valve, 102, 104, 106, 108,
112... Solenoid switching valve, 110... Flow control valve, 150... Steering wheel, 181... Lock rod, 181a... Lock plate, 182... Locking pin, 183... Air cylinder, 183a... Piston rod , 18
3b...Hanging bracket, 183c...Pin, 188...
... Lock release detection switch, 189 ... Lock detection switch, 190 ... Neutral detection switch, 200 ... Rear steering lock switch (RSL switch), 201 ... Lock release display lamp, 202 ... Steering mode changeover switch (SMS switch) ), 210...Rear steering lock switch (RSL switch), 21
1... Lock release indicator lamp, 212... Steering mode changeover switch (SMS switch),
216... Reverse steering correction switch, 220, 222
,226,228,234,236...Relay,
232... Speed change control circuit.

Claims

[Scope of claim for utility model registration] (1) Hydraulic pressure for steering an all-terrain crane vehicle that is equipped with a hydraulic steering system that steers each of the front and rear wheels with a steering cylinder, and can be operated in both a carrier house and a crane house. In the circuit, a hydraulic oil supply source and a first hydraulic pressure responsive to a steering wheel provided in the carrier house generate hydraulic pressure according to a rotation direction and rotation angle of the steering wheel.
a second flow control valve that responds to a steering wheel provided in the crane house and generates hydraulic pressure according to the direction and angle of rotation of the steering wheel; Each steering cylinder of one or both of the wheels has a plurality of selectable mode switching positions for steering these wheels in the same phase or in opposite phases, and the operating hydraulic pressure is adjusted according to the selected mode switching position. a first electromagnetically operated mode switching valve that supplies the hydraulic fluid, and a second electromagnetic switching valve that selectively supplies the hydraulic fluid discharged from the hydraulic fluid supply source to either one of the first and second flow control valves. and the hydraulic pressure generated by the first and second flow control valves in response to the operation of the second electromagnetic switching valve.
A hydraulic circuit for steering an all-terrain crane, comprising: a third electromagnetic switching valve for supplying power to the electromagnetic operation mode switching valve. (2) The hydraulic oil supply source includes a main pump and a pilot hydraulic pump driven by a first drive source, an emergency pump driven by a second drive source, a fourth switching valve, and a fourth switching valve. and an adjustment valve connected downstream of the switching valve to adjust the amount of hydraulic oil and oil pressure, and the fourth switching valve controls the main pump and the emergency pump in response to the pilot hydraulic pressure discharged by the pilot hydraulic pump. The hydraulic circuit for steering an all-terrain crane vehicle according to claim 1, characterized in that either one of the hydraulic fluids is selectively supplied to the regulating valve.