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Telescopic arms for self-propelled working machines

A working machine, self-propelled technology, used in the field of telescopic booms

Active Publication Date: 2019-09-03
MANITOU ITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] This situation constitutes a limit to the height to which a known arm is capable of transferring a lifting load, and also a limit to the maximum range permitted and the maximum load capable of movement

Method used

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  • Telescopic arms for self-propelled working machines
  • Telescopic arms for self-propelled working machines
  • Telescopic arms for self-propelled working machines

Examples

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Embodiment Construction

[0019] Referring to the above-mentioned drawings, reference numeral 1 indicates the telescopic lifting arm of the present invention.

[0020] The arm 1 of the invention is intended to be mounted on self-propelled working machines 10, such as hoists, telescopic handlers, lift trucks of the fixed and rotating type.

[0021] The arm 1 of the present invention is prearranged to mount and support at its end equipment for lifting or moving a load, which equipment can include tools such as forks, tongs and the like.

[0022] The arm 1 can have attachment means 11 at its ends, including known types, which can replace the device.

[0023] The arm 1 of the invention can be articulated on a frame or on a rotatable platform 20 of a machine 10 so as to be able to tilt, driven by hydraulic cylinders or the like, between a lower position, which is substantially horizontal, and an upper position in which , the arm 1 is nearly vertical.

[0024] The arm 1 is extendable and retractable, more ...

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Abstract

The application discloses a telescopic lifting arm (1) for a self-propelled work machine (10), such as a hoist, telescopic handler, etc., the telescopic lifting arm comprising three tubular elements (21, 22, 23, 24, 25, 26), these tubular elements have a reduced cross-section and are telescopically connected to each other in order to define a support structure that can move between a retracted configuration and an extended configuration in which the tube shaped elements are inserted into each other, and in this elongated configuration, the two tubular elements are extracted; the arm (1) comprises a hydraulic actuator (4) which communicates with the supporting structure (21, 22, 23, 24, 25, 26) and are provided with three hydraulic elements (41, 42, 43), which are telescopically connected to each other, and each hydraulic element is connected to a corresponding tubular element of the supporting structure.

Description

technical field [0001] The present invention relates to a telescopic boom for self-propelled working machines, such as hoists, telehandlers, lift trucks of the fixed and rotating type. Background technique [0002] Work machines are used in many sectors, from construction to agriculture, to mining, etc., and consist of a vehicle provided with a frame motor on tracks or wheels that mounts a cab and a lift arm that lifts The arms are telescopically extendable. [0003] Equipment parts (or "attachments") are present at the distal end of the arms for lifting or moving loads, including tools such as forks, clamps and the like. [0004] The arm is hinged to the frame or to the rotating platform of the machine and is used for tilting between a lower position, which is substantially horizontal, and an upper position in which the arm is nearly vertical; tilting is driven by hydraulic cylinders or the like. [0005] The arm includes a plurality of extensions of tubular configuration...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C23/693F15B15/16
CPCB66C23/705F15B15/16B66C23/701B66C23/703B66F9/0655B66C2700/0357
Inventor M·约蒂
Owner MANITOU ITAL
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