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Aerial lift vehicle

A high-altitude work vehicle and operation technology, applied in the direction of the lifting device, etc., can solve the problems of not being able to use at the same time, increasing the burden of the control device, narrowing the working range, etc.

Inactive Publication Date: 2015-04-08
AICHI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with these two systems is that while doing horizontal / vertical control by keeping the elevation angle of the arm constant as in the previous system, a wider working range can be ensured under horizontal control, but the work under vertical control Lower height; with horizontal / vertical control by keeping the swing angle of the arm constant relative to the boom as in the latter system, the working height can be higher with vertical control, but the working range is narrowed with horizontal control
[0008] In order to solve the above problems, it is necessary to change both the elevation angle of the arm and the swing angle of the arm relative to the boom, so as to widen the working range under horizontal control and increase the working height under vertical control, but the burden of the control device will increase. question
Moreover, in conventional leveling devices similar to the above closed loop hydraulic system, the problem is that only one of the above two systems can be configured, and the advantages of the above two systems cannot be used at the same time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment 1 is a case where the above-mentioned leveling mode is manually switched in a state where the mode selection switch 93 has been switched to the normal mode. In Example 1, using image 3 The level selector switch 94 shown manually toggles between boom / arm linked leveling mode and boom / arm independent leveling mode. There is an indicator light (not shown in the figure) near the leveling selector switch 94, through which, it can be clearly known that the boom / arm linkage leveling mode and the boom / arm independent leveling mode have been selected. Which kind of. For example, a toggle switch that can be positioned forward or rearward like the mode selector switch 93 can be used as the level selector switch 94 . Next, the relationship between the leveling mode selection state selected by the leveling selector switch 94 and the operations of the boom operating lever 91 and the arm operating lever 92 will be described, and the operation will be described.

[0041]...

Embodiment 2

[0046] Embodiment 2 is a case where the above-mentioned leveling mode is automatically switched in a state where the mode selection switch 93 is switched to the HV mode. First, if Figure 5 As shown, in the case of tilting the boom operating rod 91 in the front-rear direction in the HV mode to move the cabin 50 in the Y direction, the controller 80 automatically switches to the boom / arm linkage leveling mode. Specifically, when the boom operating rod 91 is tilted forward or backward, as described above, the Y operation signal is output to the controller 80, and once the Y operation signal is input to the controller 80, the boom 30 will be raised or lowered. And extend or shrink, so that the operation cabin 50 moves on the Y direction, and, will make the operation cabin rocking cylinder 47 move prior to the arm rocking cylinder 44 and make the operation cabin 50 shake relative to the arm 40, to keep the arm 40 relatively The swing angle of the boom 30 is constant. Therefore, ...

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PUM

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Abstract

An aerial lift vehicle is formed by a travelling body; a derrickably attached boom 30; a derricking cylinder for raising and lowering the boom 30; an arm 40, which is vertically swivel ably attached to the distal end of the boom 30; an arm swivelling cylinder, which swivels the arm 40 in the vertical direction relative to the boom 30; a platform 50, which is vertically swivel ably attached to the distal end of the arm 40; a platform swivelling cylinder, which swivels the platform 50 in the vertical direction relative to the arm 40; and levelling control means for carrying out control for maintaining the platform 50 in a horizontal state by preferentially actuating one of the arm swivelling cylinder and the platform swivelling cylinder over the other one of the arm swivelling cylinder and the platform swivelling cylinder in accordance with a derricking operation of the boom 30.

Description

technical field [0001] The invention relates to an aerial work vehicle, which has a boom with a variable inclination angle, an arm at the end of the boom that can swing up and down relative to the boom, a working cabin at the end of the arm, and a leveling device for stabilizing the spatial orientation of the working cabin . Background technique [0002] As an example of the above-mentioned aerial work vehicle, the aerial work vehicle includes: a boom, which is located above the mobile body, and can move up and down, telescopically and rotated; an arm, which is located at the end of the boom, can swing up and down; The end of the arm is boarded by the operator, and the operator boarded in it performs work by moving the work cabin to the required high-altitude work position. Such work vehicles are used, for example, in electrical work and construction work. There is a leveling device in the aerial work vehicle, regardless of the inclination angle of the boom, the floor of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66F11/04
CPCB66F11/046
Inventor 落合健二
Owner AICHI