JPH0441634U

JPH0441634U -

Info

Publication number: JPH0441634U
Application number: JP8290190U
Authority: JP
Priority date: 1990-08-03
Filing date: 1990-08-03
Publication date: 1992-04-08
Anticipated expiration: 2005-04-19
Also published as: JPH0716978Y2

Description

[Brief explanation of the drawing]

第１図は本考案請求項１に対応する第一実施例
の荷役車両の負荷表示装置の機能ブロツク図、第
２図は同じくその制御フローチヤート、第３図は
同じく負荷検出器のテール圧と表示ランプとの対
応関係を示す図、第４図は荷役車両の側面図であ
る。第５図は本考案請求項１に対応する第二実施
例の負荷表示装置の電気回路図である。第６図は
本考案請求項２に対応する第三実施例の負荷表示
装置の機能ブロツク図、第７図は車体の走行力を
フルにかけた状態を示す図、第８図は荷積時の車
体の後輪が浮いた状態を示す図、第９図はフルパ
ワー時における表示器の全点灯の状態を示す図、
第１０図は同じくその車両のスリツプ時における
半点灯の状態を示す図である。第１１図は従来の
荷役車両の負荷表示装置の制御機能ブロツク図、
第１２図は同じくその表示器の正面図である。１１……車両本体、１２……支軸、１３……ブ
ーム、１４……ブームシリンダ、１５……横軸、
１６……荷役具、２５……負荷検出器、２９……
荷役具姿勢検出器、３０……ブーム位置検出器、
３１……制御回路、４１ａ……起き上り状態判別
手段、４１ｂ……揚高角判別手段、４２……負荷
判別手段、４３……表示器切換手段、Ｘ……表示
器。 FIG. 1 is a functional block diagram of the load display device for a cargo handling vehicle according to the first embodiment corresponding to claim 1 of the present invention, FIG. 2 is a control flow chart thereof, and FIG. 3 is a diagram showing the tail pressure of the load detector. FIG. 4 is a side view of the cargo handling vehicle, showing the correspondence with the display lamps. FIG. 5 is an electrical circuit diagram of a load display device according to a second embodiment of the present invention. Fig. 6 is a functional block diagram of the load display device of the third embodiment corresponding to claim 2 of the present invention, Fig. 7 is a diagram showing a state in which the running force of the vehicle body is fully applied, and Fig. 8 is a diagram showing the state when the vehicle is loaded. Figure 9 shows a state where the rear wheels of the vehicle are floating. Figure 9 shows a state where all indicators are lit at full power.
FIG. 10 is a diagram showing a half-lit state when the vehicle is slipping. FIG. 11 is a control function block diagram of a conventional cargo handling vehicle load display device.
FIG. 12 is a front view of the display. 11... Vehicle body, 12... Support shaft, 13... Boom, 14... Boom cylinder, 15... Horizontal shaft,
16...Cargo handling equipment, 25...Load detector, 29...
Cargo handling equipment attitude detector, 30...boom position detector,
31... Control circuit, 41a... Lifting state determining means, 41b... Lifting angle determining means, 42... Load determining means, 43... Display switching means, X... Display.

Claims

[Scope of Claim for Utility Model Registration] 1. A boom rotatably supported around a support shaft relative to the vehicle body, a boom cylinder for rotating the boom, and a boom cylinder rotatable around a horizontal axis at the tip of the boom. A cargo handling vehicle equipped with a movably supported cargo handling tool, comprising: a load detector for detecting a load applied to the boom cylinder; a cargo handling tool attitude detector for detecting a rising state of the cargo handling tool; a boom position detector that detects the lifting height position; an indicator that displays whether or not the cargo handling condition is dangerous; a control circuit for controlling a display of the cargo handling equipment, the control circuit comprising: a control circuit for determining whether or not the rising state of the cargo handling equipment is in the final heel based on the output signal from the cargo handling equipment attitude detector; a lifting state determining means; a lifting angle determining means for determining whether the boom has rotated to a lifting height angle at which a maximum load is applied based on an output signal from the boom position detector; and a lifting state determining means. determines the final inclination of the cargo handling tool, and when the lifting height angle determining means determines the maximum load lifting height angle of the boom, the load applied to the cargo handling tool attitude detector is determined to be constant based on the output signal from the load detector. load discriminating means for discriminating whether or not the boom cylinder load is equal to or greater than a certain value; and display switching control means for setting the display on the display to a dangerous area when the load discriminating means determines that the boom cylinder load is equal to or greater than a certain value. A load display device for a cargo handling vehicle, characterized by: 2. A boom rotatably supported around a support shaft relative to the vehicle body, a boom cylinder for rotating the boom, and a cargo handling tool supported rotatably around a horizontal shaft at the tip of the boom. a load detector that detects the load applied to the boom cylinder when the vehicle moves forward during scooping work; an indicator that displays whether the vehicle is in a dangerous state; and a detection from the load detector. a control circuit that controls the display on the display based on the signal, and the control circuit includes: load determining means that determines a change in the load applied to the boom cylinder based on the detection signal from the load detector; 1. A load display device for a cargo handling vehicle, comprising: display switching means for switching the display according to the amount of change in boom cylinder load based on the determination result of the load determination means.