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Excavator

A technology for excavators and electric motors, which is applied in the direction of earth movers/shovels, mechanical equipment, gear transmissions, etc., can solve the problems of maintenance and repair of worn parts without mentioning the wear of joint parts, and achieve durability Wear replacement, easy replacement effect

Active Publication Date: 2016-10-05
SUMITOMO HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, Patent Document 1 only discloses that the output shaft, the brake coupling portion and the planetary carrier are combined at a position close to the rotation center of the output shaft of the first slewing speed reducer, and there is no mention of the wear of the joint portion, maintenance and repair of each component, and Replacement of worn parts

Method used

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Examples

Experimental program
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Embodiment Construction

[0020] First, the overall structure of the shovel incorporating the turning drive device which concerns on one Embodiment of this invention, and the structure of a drive system are demonstrated. figure 1 It is a side view which shows the shovel incorporating the turning drive device which concerns on one Embodiment of this invention. In addition, a shovel is an example of a construction machine, and a turning drive device according to an embodiment of the present invention can be incorporated into a construction machine having a mechanism for turning a turning body.

[0021] figure 1 In the shown shovel, an upper revolving body 3 is mounted on an undercarriage 1 via a revolving mechanism 2 . A boom 4 is mounted on the upper revolving body 3 . An arm 5 is attached to the front end of the boom 4 , and a bucket 6 is attached to the front end of the arm 5 . The boom 4 , stick 5 and bucket 6 are hydraulically driven by the boom cylinder 7 , stick cylinder 8 and bucket cylinder 9...

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PUM

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Abstract

The present invention provides a shovel equipped with a slewing speed reducer having an output shaft that is wear-resistant and easily replaceable. A shovel according to an embodiment of the present invention is equipped with a turning drive device ( 40 ) including a turning motor ( 21 ), a turning speed reducer ( 24 ), and a mechanical brake ( 23 ). The planet carrier (46) of the first rotary speed reducer (24-1) includes an output shaft portion (46a) constituting an output shaft and a carrier portion (46b) rotatably holding the planetary gear (44). The output shaft part (46a) and the wheel frame part (46b) are fastened by bolts (46c).

Description

technical field [0001] This application claims priority based on Japanese Patent Application No. 2013-074945 filed on March 29, 2013. The entire content of this application is incorporated in this specification by reference. [0002] The present invention relates to an excavator equipped with a rotary speed reducer. Background technique [0003] Conventionally, there is known a shovel equipped with the following slewing mechanism, that is, the slewing mechanism includes: a slewing motor; a 1st slewing speed reducer connected to the output shaft of the slewing motor; a 2nd slewing speed reducer connected to the first The output shaft of the rotary reducer; the third rotary reducer connected to the output shaft of the second rotary reducer; and the swing circle connected to the output shaft of the third rotary reducer (for example, refer to Patent Document 1). [0004] In this shovel, a pair of brake pads positioned on the housing as a stationary part sandwiches the outer pe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02F9/20
CPCE02F9/128E02F9/202E02F9/2095F16H1/28
Inventor 冈田健志稻田明彦松木照一平沼一则
Owner SUMITOMO HEAVY IND LTD