JPS6332911U

JPS6332911U -

Info

Publication number: JPS6332911U
Application number: JP12587486U
Authority: JP
Priority date: 1986-08-20
Filing date: 1986-08-20
Publication date: 1988-03-03

Description

[Brief explanation of drawings]

図面は本考案の一実施例を示し、第１図は本考
案に係る油圧サスペンシヨン装置が搭載されるト
ラツククレーンの側面図、第２図は第１図に示す
トラツククレーンの部分横断面図、第３図は本考
案に係る油圧サスペンシヨン装置の油圧回路図、
第４図は第３図の油圧シリンダの油圧回路部１０
ｄ，１２ｄ，１６ｄ，１８ｄの詳細回路図、第５
図は作動油及びパイロツト油圧の供給系統の油圧
回路図、第６図は油圧サスペンシヨン装置の電磁
切換弁に駆動信号を供給する駆動回路１２０の入
出力結線図、第７図は第４図の流量制御弁２６を
構成するチエツク弁２６ｂの詳細を示す断面構成
図、第８図は第４図のパイロツトチエツク弁２８
の詳細を示す断面構成図、第９図乃至第１１図は
各々本考案に係る油圧サスペンシヨン装置の作動
を説明するための油圧回路状態図、第１２図は本
考案に係る油圧サスペンシヨン装置のシヨツクア
ブソーバ機能を説明するためのピストンスピード
と減衰力との関係を示すグラフ、第１３図乃至第
２９図は各々本考案に係る油圧サスペンシヨン装
置の作動を説明するための油圧回路状態図である
。１…トラツククレーン、３…シヤシフレーム、
４…前輪、５…フロントアクスル、８…後輪、９
…リアアクスル、１０，１２，１６，１８…油圧
シリンダ、１０ｂ，１２ｂ，１６ｂ，１８ｂ…ピ
ストン、１０ｅ，１２ｅ，１６ｅ，１８ｅ…スト
ロークセンサ、１０ｆ，１２ｆ，１６ｆ，１８ｆ
…ピストン上室、１０ｇ，１２ｇ，１６ｇ，１８
ｇ…ピストン下室、２１，２２，２３…油路、２
５…リリーフ弁、２６…流量制御弁、２６ａ…絞
り、２６ｂ…絞り付チエツク弁、２６０…ポペツ
ト、２６５…スペーサ、２７…パイロツト切換弁
、２８，２９…パイロツトチエツク弁、２８０…
ポペツト、２８３…ピストン、２８３ａ…ピスト
ンロツド、２８９…スペーサ、３０…パイロツト
切換弁、４１…作動油圧路、４７，４９，５０…
電磁切換弁、５１，５２…パイロツト油路、５４
，５９，６４，６７…パイロツトチエツク弁、５
５，６０…流量制御弁、５５ａ，６０ａ…パイロ
ツトチエツク弁、５５ｂ，６０ｂ…絞り、５７，
６２，６５，６８…アキユムレータ、７０，７１
…チエツク弁、７３〜８０…油路、９１…ドレイ
ン、１００ａ，１００ｂ…油圧ポンプ、１０２…
電磁切換弁、１０３…流量制御弁、１０５…電磁
切換弁、１２０…姿勢制御コントローラ、１２２
…傾斜角センサ、１２４…上下加速度Ｇセンサ、
１２５…ブレーキ圧スイツチ、１３０…姿勢コン
トロールスイツチ、１３２…上下コントロールス
イツチ、１３４…マニアル切換スイツチ。 The drawings show one embodiment of the present invention; FIG. 1 is a side view of a truck crane on which a hydraulic suspension device according to the present invention is mounted; FIG. 2 is a partial cross-sectional view of the truck crane shown in FIG. 1; Figure 3 is a hydraulic circuit diagram of the hydraulic suspension device according to the present invention;
Figure 4 shows the hydraulic circuit section 10 of the hydraulic cylinder shown in Figure 3.
Detailed circuit diagram of d, 12d, 16d, 18d, 5th
The figure is a hydraulic circuit diagram of the hydraulic oil and pilot oil pressure supply system, Figure 6 is an input/output wiring diagram of the drive circuit 120 that supplies a drive signal to the electromagnetic switching valve of the hydraulic suspension system, and Figure 7 is the same as that of Figure 4. FIG. 8 is a cross-sectional configuration diagram showing details of the check valve 26b constituting the flow rate control valve 26, and FIG. 8 is the pilot check valve 28 of FIG.
9 to 11 are hydraulic circuit state diagrams for explaining the operation of the hydraulic suspension device according to the present invention, and FIG. 12 is a diagram showing the hydraulic suspension device according to the present invention. A graph showing the relationship between piston speed and damping force for explaining the shock absorber function, and FIGS. 13 to 29 are hydraulic circuit state diagrams for explaining the operation of the hydraulic suspension device according to the present invention. . 1... Truck crane, 3... Chassis frame,
4...Front wheel, 5...Front axle, 8...Rear wheel, 9
...Rear axle, 10,12,16,18...Hydraulic cylinder, 10b, 12b, 16b, 18b...Piston, 10e, 12e, 16e, 18e...Stroke sensor, 10f, 12f, 16f, 18f
...Piston upper chamber, 10g, 12g, 16g, 18
g... Piston lower chamber, 21, 22, 23... Oil passage, 2
5... Relief valve, 26... Flow rate control valve, 26a... Throttle, 26b... Check valve with throttle, 260... Poppet, 265... Spacer, 27... Pilot switching valve, 28, 29... Pilot check valve, 280...
Poppet, 283... Piston, 283a... Piston rod, 289... Spacer, 30... Pilot switching valve, 41... Operating hydraulic path, 47, 49, 50...
Solenoid switching valve, 51, 52...Pilot oil path, 54
, 59, 64, 67...Pilot check valve, 5
5, 60...flow control valve, 55a, 60a...pilot check valve, 55b, 60b...throttle, 57,
62, 65, 68...accumulator, 70, 71
...Check valve, 73-80...Oil passage, 91...Drain, 100a, 100b...Hydraulic pump, 102...
Electromagnetic switching valve, 103...Flow rate control valve, 105...Solenoid switching valve, 120...Attitude control controller, 122
...Tilt angle sensor, 124...Vertical acceleration G sensor,
125...Brake pressure switch, 130...Posture control switch, 132...Vertical control switch, 134...Manual changeover switch.

Claims

[Scope of utility model registration request]

A hydraulic cylinder which is disposed at each end of at least a front axle and a rear axle and has a chamber on one side of the piston defined by a piston and a chamber on the other side of the piston on the piston rod side; It has oil passages that communicate with the other side chamber of the piston, and a gas chamber and an oil chamber that are disposed in the middle of each of these oil passages and defined by a movable partition, and when the piston moves, the one side chamber of the piston is connected to the other side chamber. an accumulator that stores a part of the hydraulic oil discharged from the oil chamber in the oil chamber; a hydraulic oil source that pumps and supplies hydraulic oil to each of the oil passages; A switching valve means for switching and controlling the supply, cutoff, and removal of hydraulic oil to the oil passage, a signal generating means for generating a command signal to extend and retract each of the hydraulic cylinders to a predetermined position by human operation, and a command for the signal generating means. A hydraulic suspension device for a vehicle, comprising a drive circuit that outputs a drive signal to the switching valve means in response to a signal.