Cab support structure of construction machine

Patent metadata

Field	Value
Publication number	US-9908497-B2
Application number	US-201415029074-A
Country	US
Kind code	B2
Filing date	Oct 28, 2014
Priority date	Oct 29, 2013
Publication date	Mar 6, 2018
Grant date	Mar 6, 2018

Abstract

This invention relates to a cab support structure for construction machine. The cab support structure has a rear beam and a front beam, which support front and rear part of cab, and a center beam located and welded between inner and outer frames of the machine. A stopper located at the corner of center beam side of the junction of rear beam and outer frame is formed box shape. The stopper has an L-shaped plate welded to the rear beam and the outer frame, and a doubling L-shaped plate welded to the L-shaped plate, rear beam, and outer frame.

First claim

The invention claimed is:

1. A cab support structure of a construction machine, comprising:
a front beam and a rear beam that are respectively joined and arranged between an inner frame and an outer frame which extend in a front and rear direction of a machine body frame, and that support a front and a rear of a cab via anti-vibration mounts, and a center beam which is positioned between the front beam and the rear beam; and
stopper units of restriction members which are joined to the cab to restrict movement of the cab at the time of roll over of a machine body, the stopper units being joined to the rear beam and the outer frame respectively at corner parts where the rear beam and the outer frame are in contact with each other, and being formed in a box structure.

2. A construction machine including the cab support structure of claim 1 .

3. The cab support structure of a construction machine according to claim 1 , wherein
a lower end of each stopper unit is joined to a bottom frame which is joined to lower parts of the rear beam and the outer frame, of the machine body frame.

4. The cab support structure of a construction machine according to claim 1 , wherein
each stopper unit includes:
an L-shaped plate which is obtained by forming a band-shaped plate into an L shape, with one side thereof being set as a vertical side directed downward, and the other side being set as an upper side directed to the outer frame, an edge part on one side of each of the vertical and upper sides being joined to the rear beam, and a front end part of the upper side being positioned on the outer frame side, at the corner part; and
a doubling plate that reinforces the L-shaped plate and is obtained by forming a band-shaped plate into an L shape, with one side thereof being set as an upper side which is superposed on the upper side of the L-shaped plate in an orthogonal direction and is joined to the L-shaped plate, the rear beam, and the outer frame respectively, and with the other side being set as a vertical side directed downward, an edge part on one side of the vertical side being joined to the outer frame.

5. The cab support structure of a construction machine according to claim 4 , wherein
a lower end of each stopper unit is joined to a bottom frame which is joined to lower parts of the rear beam and the outer frame, of the machine body frame.

Assignees

• Caterpillar Sarl

Inventors

• Iwamoto Takahiro
• Yamamoto Takuya
• Iguchi Ryo
• Nakai Akito
• Tsuneyoshi Takeshi
• Nakamura Takeshi

Classifications

• A01B76/00

  Parts, details or accessories of agricultural machines or implements, not provided for in groups A01B51/00 - A01B75/00 · CPC title

• B60R21/13 Primary

  Roll-over protection (electrical circuits for triggering safety arrangements B60R21/01) · CPC title

• E02F9/163

  Structures to protect drivers, e.g. cabins, doors for cabins; Falling object protection structure [FOPS]; Roll over protection structure [ROPS] (for handrails mounted on cabins E02F9/0833 takes precedence; for vehicles in general B60R21/11, B60R21/13, for fork-lift trucks B66F9/07545) · CPC title

• E02F9/0816 Primary

  Welded frame structure · CPC title

• B62D33/0604 Primary

  Cabs insulated against vibrations or noise, e.g. with elastic suspension (resilient connections between superstructure sub-units B62D27/04; damping noise in general G10K11/00; for vehicles in general B60R13/08) · CPC title