Drum rotation device for construction machine

A technology of construction machinery and drum rotation, which is applied in the direction of electromechanical devices, electrical devices, mechanical equipment, etc.

Inactive Publication Date: 2008-05-07
NIHON KENKI CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, in a drum rotating device using an electric motor, if lubricating oil is accommodated in the drum together with the reduction mechanism, it is difficult to compactly install the negative dry electromagnetic brake in a state where it is isolated from the flammable lubricating oil. The problem of placing it on the inner peripheral side of the drum

Method used

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  • Drum rotation device for construction machine
  • Drum rotation device for construction machine
  • Drum rotation device for construction machine

Examples

Experimental program
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Effect test

Embodiment Construction

[0031] Hereinafter, taking the case of being applied to the traveling device of an electric hydraulic excavator as an example, and referring to Fig. 1- Figure 8 Embodiments of the drum rotating device of the construction machine of the present invention will be described in detail.

[0032] First, Figure 1~ Image 6 The first embodiment of the present invention is shown. In the drawings, 1 denotes an electric hydraulic excavator, and the electric hydraulic excavator 1 roughly includes a self-propelled undercarriage 2 and a later-described upper revolving body 7 rotatably provided on the undercarriage 2 .

[0033] Here, the undercarriage 2 has a truck frame 3 composed of a center frame 3A and left and right side frames 3B, and the truck frame 3 constitutes the body of the hydraulic excavator 1 according to the present embodiment. And, be provided with sprocket wheel 4 at the rear end side of each side frame 3B, be provided with idler wheel 5 at the front end side of each sid...

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PUM

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Abstract

The invention provides a drum rotating device of a construction machine. The support member (12) fixed on the truck frame (3) is composed of a cylindrical part (12A) and a cover part (12D), and two dry type electromagnetic brake (30). Furthermore, an electric motor (14) is mounted on the supporting member (12). In addition, a drum (15) is rotatably mounted on the outer periphery of the support member (12) via a bearing (19), and a planetary gear reduction mechanism (21) is accommodated in the drum (15). Moreover, the movable seal (44) seals between the support member (12) and the drum (15), and the shaft insertion hole (12E) of the support member (12) and the connecting shaft (26) are sealed by the seal ring (45). ) are sealed. Thereby, the two dry electromagnetic brakes (30) can be housed in the support member (12) in a state isolated from the lubricating oil (22).

Description

technical field [0001] The present invention relates to a drum rotating device suitable for use in traveling equipment such as hydraulic excavators and hydraulic cranes, and construction machines such as rope winches. Background technique [0002] Generally, the running gear of a construction machine such as a hydraulic excavator or a wheel loader is provided with a drum rotating device for rotating a drum on which a sprocket for driving a crawler belt is attached or a drum on which a wheel is attached. In addition, a rope winch mounted on a hydraulic crane or the like is provided with a drum rotating device that rotates a drum that winds and uncoils the rope (for example, refer to Japanese Patent Application Laid-Open No. 2000-9017 and Japanese Patent Laid-Open No. 1-153840). , Japanese Unexamined Patent Publication No. 60-183498). [0003] Here, the drum rotating device according to the prior art has: a hydraulic motor as a driving source; a reduction mechanism provided i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D55/125B60K7/00E02F9/02F16D55/00F16D65/21F16J15/16H02K7/116F16D65/18
CPCH02K7/1025B60Y2200/41B60K2007/0092B62D55/125E02F9/02B60K2007/0038B60K17/046F16D2121/22B60K7/0007H02K7/116B60L2200/40B60L2220/44Y02T10/64B60K7/00F16D55/00
Inventor 鹈泽信夫田中笃司落合正巳下薗忠弘城岛美臣小俣刚
Owner NIHON KENKI CO LTD
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