JPH0416793U

JPH0416793U -

Info

Publication number: JPH0416793U
Application number: JP5862890U
Authority: JP
Priority date: 1990-05-31
Filing date: 1990-05-31
Publication date: 1992-02-12
Anticipated expiration: 2005-05-31
Also published as: JP2503011Y2

Description

[Brief explanation of the drawing]

第１図から第５図は、この考案の第１実施例に
関し、第１図はアウトリガ装置の全体構成説明図
、第２図は伸縮制御装置の上面図、第３図は第２
図の−断面図、第４図は電源回路の概略図、
第５図は電源回路の詳細図、第６図は第１実施例
の変形例の油圧回路図、第７図は第２実施例の油
圧回路図、第８図は第３実施例の電源回路図、第
９図および第１０図は従来例に関し、第９図はア
ウトリガ装置の斜視図、第１０図は伸縮制御装置
の断面図である。２０……アウトリガ装置、２１……外筒、２２
……内筒、２６……伸縮制御装置、２８……ロツ
クピン、３０……係合穴、３１……操作レバー、
３３……油圧ポンプ、３５……電動モータ、３９
……スイツチ（第２のスイツチ）、４１……電源
回路、５２……油圧アクチユエータ（油圧シリン
ダ）、５７，７２ａ，７２ｂ……圧油路、５７ｂ
……リリーフ弁、５８……ドレン装置（オイルタ
ンク）、７１ａ，７１ｂ……第２のリリーフ弁、
７３ａ，７３ｂ……油路（管路）、８１……ブレ
ーカ。 1 to 5 relate to the first embodiment of this invention, in which FIG. 1 is an explanatory diagram of the overall configuration of the outrigger device, FIG. 2 is a top view of the telescopic control device, and FIG.
Figure 4 is a schematic diagram of the power supply circuit.
Fig. 5 is a detailed diagram of the power supply circuit, Fig. 6 is a hydraulic circuit diagram of a modification of the first embodiment, Fig. 7 is a hydraulic circuit diagram of the second embodiment, and Fig. 8 is a power supply circuit of the third embodiment. 9 and 10 relate to a conventional example, in which FIG. 9 is a perspective view of an outrigger device, and FIG. 10 is a sectional view of an expansion/contraction control device. 20...Outrigger device, 21...Outer cylinder, 22
... Inner cylinder, 26 ... Telescopic control device, 28 ... Lock pin, 30 ... Engagement hole, 31 ... Operation lever,
33... Hydraulic pump, 35... Electric motor, 39
... Switch (second switch), 41 ... Power supply circuit, 52 ... Hydraulic actuator (hydraulic cylinder), 57, 72a, 72b ... Pressure oil path, 57b
... Relief valve, 58 ... Drain device (oil tank), 71a, 71b ... Second relief valve,
73a, 73b...oil line (pipe line), 81...breaker.

Claims

[Scope of Claim for Utility Model Registration] (1) An outer cylinder suspended horizontally on the vehicle body frame, an inner cylinder that is telescopically inserted into the outer cylinder and has a jack hanging from its tip, and an inner cylinder that is attached to the outer cylinder with respect to the outer cylinder. The outrigger device has a telescopic drive means for telescopically driving the outer cylinder, and the outer cylinder is provided with a lock pin which is elastically biased toward the inner cylinder side and can move forward and backward. A plurality of engagement holes are formed in the cylinder at appropriate intervals, and the inner end of the lock pin is moved back and forth to engage and disengage from the engagement hole formed in the inner cylinder, thereby fixing the inner cylinder to the outer cylinder. and an expansion/contraction control device for an outrigger device that performs release, wherein a medium whose physical quantity changes as the lock pin engages with the engagement hole is provided, and the expansion/contraction driving means operates according to the change in the physical quantity of the medium. An expansion/contraction control device for an outrigger device, characterized by stopping the. (2) The extension/contraction control device for an outrigger device according to claim 1, wherein an operating lever extending in a radial direction is pivotally supported on the upper part of the lock pin, and the operating lever is oscillated to move the lock pin forward or backward. At the same time, a switch for stopping the operation of the telescopic drive means is disposed near the operating lever, and the switch is operated to stop by displacement of the operating lever corresponding to engagement of the locking pin with the engagement hole. Features: Extension control device for outrigger equipment. (3) In the telescoping control device for an outrigger device according to claim 1, the telescoping drive means is constituted by a hydraulic actuator, and the pressure oil passage from the hydraulic pump to the hydraulic actuator is connected to the drain device with a higher oil pressure than normal working oil pressure. An expansion/contraction control device for an outrigger device, characterized by installing a relief valve that opens an oil path. (4) The extension/contraction control device for an outrigger device according to claim 1, wherein the extension/contraction driving means is constituted by an electric motor, and the power supply circuit of the electric motor is provided with a breaker that opens the circuit with a current larger than a normal power supply current. An expansion/contraction control device for an outrigger device, characterized in that it is equipped with a.