JPS6289289U

JPS6289289U -

Info

Publication number: JPS6289289U
Application number: JP18179585U
Authority: JP
Priority date: 1985-11-26
Filing date: 1985-11-26
Publication date: 1987-06-08

Description

[Brief explanation of the drawing]

第１図はこの考案を具体化した中折れ式高所作
業車の側面図、第２図はアウトリガを説明するた
めの平面図、第３図は安全装置の電気ブロツク回
路図、第４図はプラツトホームの伸長領域を説明
するための説明図、第５図は旋回台の旋回範囲を
説明するための図、第６図は油圧モータの油圧回
路図、第７図、第８図、第９図はそれぞれプラツ
トホームの旋回範囲可能な範囲を説明する図であ
る。図中、４は旋回台、５は下側アウタブーム、７
は下側インナブーム、９は上側アウタブーム、１
１は上側インナブーム、１３はプラツトホーム、
１６は左側アウトリガ、１７は右側アウトリガ、
１８は左後アウトリガ、１９は右後アウトリガ、
１６ａ〜１９ａは中間張り出し検出器、１６ｂ〜
１９ｂは最大張り出し検出器、２４は第１の旋回
検出器、２５は第２の旋回検出器、３０はマイク
ロコンピユータ、３１は中央処理装置（ＣＰＵ）
、３２はプログラムメモリ、２９は第１の起伏角
度検出器、３０は第２の起伏角度検出器、３１は
第１の伸縮量検出器、３２は第２の伸縮量検出器
、４１は旋回用電磁弁、４２は第１起伏用電磁弁
、４４は第２起伏用電磁弁、４６は第１伸縮電磁
弁、４８は第２の伸縮用電磁弁である。 Figure 1 is a side view of a folding type aerial work platform that embodies this idea, Figure 2 is a plan view to explain the outriggers, Figure 3 is an electric block circuit diagram of the safety device, and Figure 4 is An explanatory diagram for explaining the extension area of the platform, Figure 5 is a diagram for explaining the rotation range of the swivel table, Figure 6 is a hydraulic circuit diagram of the hydraulic motor, Figures 7, 8, and 9. are diagrams each illustrating the possible turning range of the platform. In the figure, 4 is a rotating base, 5 is a lower outer boom, and 7 is a rotating base.
is the lower inner boom, 9 is the upper outer boom, 1
1 is the upper inner boom, 13 is the platform,
16 is the left outrigger, 17 is the right outrigger,
18 is the left rear outrigger, 19 is the right rear outrigger,
16a-19a are intermediate overhang detectors, 16b-
19b is a maximum overhang detector, 24 is a first rotation detector, 25 is a second rotation detector, 30 is a microcomputer, and 31 is a central processing unit (CPU).
, 32 is a program memory, 29 is a first undulation angle detector, 30 is a second undulation angle detector, 31 is a first expansion/contraction amount detector, 32 is a second expansion/contraction amount detector, and 41 is for turning. The solenoid valves include a first undulating solenoid valve 42, a second undulating solenoid valve 44, a first telescopic solenoid valve 46, and a second telescopic solenoid valve 48.

Claims

[Scope of Claim for Utility Model Registration] 1. A swivel base that is rotatable relative to the vehicle body, a boom that is pivotally supported to the swivel base so as to be able to rise and fall and that extends and contracts in the longitudinal direction, and a boom that extends and retracts in the longitudinal direction. A vehicle having a pair of left and right outriggers provided so as to be extendable, comprising: a swing drive means for swinging the swing base; a boom drive means for driving the boom; a swing detection means for detecting a swing state of the swing base; , boom condition detection means for detecting the condition of the boom; left side overhang detection means for detecting the overhang condition of the left outrigger; right side overhang detection means for detecting the overhang condition of the right outrigger; and the left and right outriggers. a storage means that stores in advance permissible conditions for the swing range of the boom in each of the extended states; and a first apparatus for determining the extended states of the left and right outriggers based on the detection signals from the left extended overhang detecting means and the right extended extended detecting means. 1 indexing means; a second indexing means for determining the boom state and rotation state at that time based on the detection signals from the swing detection means and the boom state detection means; and the indexing means for the first and second indexing means. a determining means for determining whether the results are in an allowable state for the swing range of the boom in the extended state of the corresponding left and right outriggers stored in the storage means; and when the determining means determines that the boom is not in an allowable state; A work safety device for a vehicle having a boom, comprising a swing drive means and a control means for stopping driving of at least one of the boom drive means. 2. The boom driving means consists of a hoisting drive means that raises and rotates the boom and a telescoping drive means that extends and contracts the boom in the longitudinal direction, and the boom state detection means includes a luffing angle detector that detects the amount of heave of the boom and an amount of extension and contraction of the boom. A work safety device for a vehicle having a boom as claimed in claim 1, which comprises a telescopic amount detector for detecting the amount of telescoping. 3. The work safety device for a vehicle having a boom as set forth in claim 1 of the utility model registration claim, wherein a pair of left and right outriggers are provided on the front and rear sides of the vehicle body frame, respectively. 4. The work safety device for a vehicle having a boom according to claim 1 or 3, wherein the left and right side overhang detection means are detection means for detecting an intermediate overhang state and a maximum overhang state.