JPH0458591U

JPH0458591U -

Info

Publication number: JPH0458591U
Application number: JP10241490U
Authority: JP
Priority date: 1990-09-28
Filing date: 1990-09-28
Publication date: 1992-05-20

Description

[Brief explanation of the drawing]

第１図〜第４図は本考案の実施例を示し、第１
図は旋回台及びその周辺の構成を示す平面図、第
２図は第１図の−線断面図、第３図は要部の
油圧回路図、第４図は高所作業車の側面図である
。１……車体、２……旋回台、５……ブーム、１
７……旋回モータ（駆動手段）、２１……旋回方
向検出機構、２３……揺動片、３２……前側スト
ライカ、３３……左旋回位置検出スイツチ、３５
……右旋回位置検出スイツチ、４７……旋回モー
タ用切換弁、５２……電磁切換弁、６０……制御
回路（制御手段）。 1 to 4 show embodiments of the present invention.
The figure is a plan view showing the structure of the swivel table and its surroundings, Figure 2 is a sectional view taken along the - line in Figure 1, Figure 3 is a hydraulic circuit diagram of the main parts, and Figure 4 is a side view of the aerial work vehicle. be. 1...Vehicle body, 2...Swivel base, 5...Boom, 1
7... Turning motor (driving means), 21... Turning direction detection mechanism, 23... Rocking piece, 32... Front striker, 33... Left turning position detection switch, 35
...Right rotation position detection switch, 47...Switching motor switching valve, 52...Solenoid switching valve, 60...Control circuit (control means).

Claims

[Scope of Claim for Utility Model Registration] (1) A vehicle equipped with a swivel platform that is rotatably mounted on the vehicle body and that is driven by a drive means to swivel, and a boom that is supported on the swivel platform so that it can be raised and lowered, A left rotation position detection switch detects when the platform has reached the left rotation limit position, and a right rotation position detection switch detects when the rotation base has reached the right rotation limit position, which is different from the left rotation limit position. The rotation position detection switch, the rotation direction detection means for detecting the rotation direction of the rotation base, and the rotation base rotates in a predetermined direction based on the combination of signals from both of the rotation position detection switches and the rotation direction detection means. or a control means for controlling the drive means so as to stop the rotation of the swivel base when the rightward rotation limit position is reached. (2) The turning direction detection means includes a rocking piece pivotally supported on the vehicle body and fixed to the swivel base, and contacts the rocking piece to move the rocking piece in accordance with the turning direction of the swivel base. Claim (1) characterized in that the striker is equipped with a swinging striker and a switch whose ON/OFF state is switched depending on the swinging direction of the swinging piece.
Boom rotation control device for vehicles described in ).