US20150123428A1 - Cab protection apparatus for construction machinery - Google Patents

Cab protection apparatus for construction machinery Download PDF

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Publication number
US20150123428A1
US20150123428A1 US14/404,868 US201214404868A US2015123428A1 US 20150123428 A1 US20150123428 A1 US 20150123428A1 US 201214404868 A US201214404868 A US 201214404868A US 2015123428 A1 US2015123428 A1 US 2015123428A1
Authority
US
United States
Prior art keywords
support frame
cab
fixed
front guard
protection apparatus
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US14/404,868
Other languages
English (en)
Inventor
Soo-Bong Hwang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Volvo Construction Equipment AB
Original Assignee
Volvo Construction Equipment AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Volvo Construction Equipment AB filed Critical Volvo Construction Equipment AB
Assigned to VOLVO CONSTRUCTION EQUIPMENT AB reassignment VOLVO CONSTRUCTION EQUIPMENT AB ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HWANG, Soo-Bong
Publication of US20150123428A1 publication Critical patent/US20150123428A1/en
Abandoned legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/16—Cabins, platforms, or the like, for drivers
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/16—Cabins, platforms, or the like, for drivers
    • E02F9/163—Structures to protect drivers, e.g. cabins, doors for cabins; Falling object protection structure [FOPS]; Roll over protection structure [ROPS]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D33/00—Superstructures for load-carrying vehicles
    • B62D33/06—Drivers' cabs
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/16—Cabins, platforms, or the like, for drivers
    • E02F9/166—Cabins, platforms, or the like, for drivers movable, tiltable or pivoting, e.g. movable seats, dampening arrangements of cabins

Definitions

  • the present invention relates to a cab protection apparatus for a construction machine. More particularly, the present invention relates to a cab protection apparatus for a construction machine, in which a protection structure is mounted on an outside of a cab to protect an operator from a cab structure that is deformed when an excavator turns upside down or a heavy object that drops on the cab.
  • a cab protection apparatus for a construction machine in the related art includes a protection structure 7 to protect an operator from a cab structure that is deformed when an excavator 1 turns upside down or a heavy object drops on a cab 2 .
  • the protection structure 7 is composed of a front support frame 4 and a rear support frame 5 , which are mounted on an upper frame 3 so as to be positioned on an outside of the cab 2 , and an upper support frame 6 having both ends that are connected to upper ends of the front support frame 4 and the rear support frame 5 .
  • a front guard 9 is mounted on the front support frame 4 to protect a front glass 8 of the cab 2 .
  • upper and lower portions of the front guard 9 are detachably mounted on the front support frame 4 by a bolt 10 . Due to this, in order to remove foreign substances ( fallen leaves, dust, and the like) between the front glass 8 of the cab 2 and the front guard, clean the front glass 8 , or repair wipers, it is required to separate several bolts 10 that fix the front guard 9 .
  • the present invention has been made to solve the above-mentioned problems occurring in the related art, and one embodiment of the present invention is related to a cab protection apparatus for a construction machine, which can reduce the work time required to remove foreign substances on a front surface of a cab or to replace a front glass of the cab and thus can provide convenience to a worker through mounting of a front guard on the front surface of the cab to be opened or closed in hinged manner.
  • a cab protection apparatus for a construction machine including a lower driving structure, an upper frame mounted to swing on the lower driving structure, a cab mounted on the upper frame, a working device rotatably mounted on the upper frame, and a protection structure mounted on an outside of the cab, which includes a front guard hinge-fixed to a front support frame of the protection structure to be opened or closed so as to protect a front portion of the cab; and a locking device including a striker mounted on the front support frame and a latch mounted on the front guard to be locked to or unlocked from the striker.
  • the cab protection apparatus may further include a cushion pad mounted on at least one of an upper portion and a lower portion inside the front guard to serve as a bumper in the case where the front guard fixed to the front support frame is closed.
  • the cab protection apparatus may further include a handle formed on an outer surface of the front guard to be used when the front guard fixed to the front support frame is opened or closed.
  • the cab protection apparatus may further include a stay having a fixed end liftably and rotatably fixed to a lower side of the front support frame and a free end detachably coupled to a coupling hole of the front support frame and the front guard, and maintaining the front guard mounted on the front support frame in an open state.
  • the cab protection apparatus may further include a first bumper mounted on at least one of an upper portion and a lower portion of a first support of the front support frame on which the striker is mounted to perform buffering function and noise prevention function in the case where the front guard fixed to the front support frame is closed.
  • the cab protection apparatus may further include a second bumper mounted on at least one of an upper portion and a lower portion of a second support of the front support frame to which the front guard is hinge-fixed to limit opening of the front guard within a predetermined angle in the case where the front guard fixed to the front support frame is opened.
  • a first bracket to which the first bumper is fixed may be fixed to the first support, and a fastening member insert-molded on the first bumper may be movably coupled to the first bracket in an axis direction.
  • a second bracket to which the second bumper is fixed may be fixed to the second support, and a fastening member insert-molded on the second bumper may be movably coupled to the second bracket in an axis direction.
  • the front guard may be hinge-fixed to the front support frame so as to be opened or closed in left and right directions.
  • a hinge member that fixes the front guard to the front support frame so that the front guard can be opened or closed may be fixed to the front support frame by a bolt.
  • the cab protection apparatus for a construction machine according to an embodiment of the present invention as constructed above has the following effects.
  • the front guard Since the front guard is mounted on the front surface of the cab in hinged manner, the work time for opening or closing the front guard to remove the foreign substances from the front surface of the cab can be reduced, and the worker's access is facilitated during repair work of the front glass to provide workability and convenience.
  • FIG. 1 is a schematic view of an excavator on which a cab protection apparatus for a construction machine in the related art is mounted;
  • FIG. 2 is a schematic view of an excavator on which a cab protection apparatus for a construction machine according to an embodiment of the present invention is mounted;
  • FIG. 3 is a view illustrating a state where a front guard is opened in a cab protection apparatus for a construction machine according to an embodiment of the present invention
  • FIG. 4 is an enlarged view of a locking device for locking and unlocking a front guard in a cab protection apparatus for a construction machine according to an embodiment of the present invention.
  • FIGS. 5A and 5B are cross-sectional views of a bumper that serves as a buffer when a front guard is opened or closed in a cab protection apparatus for a construction machine according to an embodiment of the present invention.
  • a cab protection apparatus for a construction machine including a lower driving structure a, an upper frame b mounted to swing on the lower driving structure a, a cab c mounted on the upper frame b, a working device including a boom rotatably mounted on the upper frame b, and a protection structure e mounted on an outside of the cab c
  • the cab protection apparatus includes a front guard 12 hinge-fixed to a front support frame 11 of the protection structure e to be opened or closed so as to protect a front portion (e.g., structure, such as front glass or wiper) of the cab c; and a locking device 15 including a striker 13 mounted on a first support 11 a of the front support frame 11 and a latch 14 mounted on the front guard 12 to be locked to or unlocked from the striker 13 .
  • the cab protection apparatus may further include a cushion pad 16 mounted on at least one of an upper portion and a lower portion inside the front guard 12 to serve as a bumper in the case where the front guard 12 fixed to the front support frame 11 is closed.
  • the cab protection apparatus may further include a handle 17 formed on an outer surface of the front guard 12 to be used when the front guard 12 fixed to the front support frame 11 is opened or closed.
  • the cab protection apparatus may further include a stay 20 having a fixed end liftably and rotatably fixed to a lower side of the front support frame 11 and a free end detachably coupled to a coupling hole 18 and 19 of the front support frame 11 and the front guard 12 , and maintaining the front guard 12 mounted on the front support frame 11 in an open state.
  • the cab protection apparatus may further include a first bumper 21 mounted on at least one of an upper portion and a lower portion of the first support 11 a of the front support frame 11 on which the striker 13 is mounted to perform buffering function and noise prevention function in the case where the front guard 12 fixed to the front support frame 11 is closed.
  • the cab protection apparatus may further include a second bumper 22 mounted on at least one of an upper portion and a lower portion of a second support 11 b of the front support frame 11 to which the front guard 12 is hinge-fixed to limit opening of the front guard 12 within a predetermined angle in the case where the front guard 12 fixed to the front support frame 11 is opened.
  • a first bracket 23 to which the first bumper 21 is fixed may be fixed to upper and lower portions of the first support 11 a, and a fastening member (e.g., a bolt) 24 insert-molded on the first bumper 21 may be movably coupled to the first bracket 23 in an axis direction (direction in which the front guard 12 is opened or closed with respect to the front support frame 11 ) (indicated by a virtual line in FIG. 5A ).
  • the first bumper 21 can be prevented from being moved.
  • a gap between the first bumper 21 and a contact piece 12 a formed on the front guard 12 to contact the first bumper 21 can be variably adjusted.
  • a second bracket 25 to which the second bumper 22 is fixed may be fixed to upper and lower portions of the second support 11 b , and a fastening member (e.g., a bolt) 26 insert-molded on the second bumper 22 may be movably coupled to the second bracket 25 in an axis direction (direction in which the front guard 12 is opened or closed with respect to the front support frame 11 ) (indicated by a virtual line in FIG. 5B ).
  • a fastening member e.g., a bolt
  • the front guard 12 may be hinge-fixed to the front support frame 11 so as to be opened and closed in left and right directions.
  • a hinge member 27 (e.g., hinge) that fixes the front guard 12 to the front support frame 11 so that the front guard 12 can be opened and closed may be fixed to the front support frame 11 by a bolt (not illustrated).
  • the protection structure e that is positioned on the outside of the cab is mounted on the upper frame b.
  • the protection structure e is composed of the front support frame 11 , the rear support frame 28 , and the upper support frame 29 having both ends that are connected to the upper ends of the front support frame 11 and the rear support frame 28 .
  • the locking device 15 is released from locking. That is, the handle 14 a of the latch 14 formed on the front guard 12 is grasped and pulled in the direction in which the front guard 12 is opened. Through this, the locking state of the latch 14 that is mounted on the front guard 12 is released from the striker 13 that is mounted on the front support frame 11 to form the locking device 15 .
  • the front guard 12 can be opened from the front support frame 11 .
  • the contact piece 12 b formed on the upper and lower portions of the front guard 12 comes in contact with the second bumper 22 that is mounted on the second support 11 b in correspondence to the contact piece 12 b.
  • opening of the front guard 12 is limited within a predetermined angle.
  • the opening angle of the front guard 12 that is opened from the front support frame 11 can be temporarily maintained during working. That is, by lifting the stay 20 that is liftably and rotatably mounted on the front support frame 11 upward, the free end of the stay 20 secedes from the coupling hole 18 formed in the front support frame 11 . In this case, by making the stay 20 descend after rotating the fixed end of the stay 20 toward the front guard 12 about the center axis, the free end is coupled to the coupling hole 19 formed in the front guard 12 .
  • the operator or worker can easily remove or clean the foreign substances, such as fallen leaves or dust, that stick to the front glass f. Further, during replacement of the front glass f or repairing of the wiper in a state where the front guard is opened, the worker's access is facilitated, and thus workability can be improved.
  • the free end of the stay 20 secedes from the coupling hole 19 that is formed in the front guard 12 .
  • the free end of the stay 20 is coupled to the coupling hole 18 formed in the front support frame 11 .
  • the front guard 12 can be closed toward the front support frame 11 . That is, by grasping and rotating the handle 17 that is formed on the lower portion of the front guard 12 in counterclockwise direction about the center axis of the hinge member 27 , the front guard 12 is closed toward the initial position of the front support frame 11 .
  • the latch 14 that is mounted on the front guard 12 is coupled to the striker 13 that is mounted on the front support frame 11 , and the locking device 15 is shifted to the locking state.
  • the front guard 12 is prevented from being opened from the front support frame 11 during working or driving.
  • the cushion pad 16 that is mounted on the upper and lower portions of the inside of the front guard 12 comes in contact with the frame 11 c of the front support frame 11 .
  • impact that is generated when the front guard 12 is closed with respect to the front support frame 11 can be mitigated, and noise can be prevented from occurring.
  • the first bumper 21 that is mounted on the upper and lower portions of the first support 11 a of the front support frame 11 comes in contact with the contact piece 12 a that is formed on the front guard 12 in correspondence to the first bumper 21 .
  • the front guard since the front guard is mounted on the front surface of the cab in hinged manner, the work time for opening or closing the front guard to remove the foreign substances from the front surface of the cab can be reduced, and the worker's access is facilitated during repair work of the front glass to provide workability and convenience.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Body Structure For Vehicles (AREA)
US14/404,868 2012-06-18 2012-06-18 Cab protection apparatus for construction machinery Abandoned US20150123428A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/KR2012/004785 WO2013191308A1 (ko) 2012-06-18 2012-06-18 건설기계용 운전실 보호장치

Publications (1)

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US20150123428A1 true US20150123428A1 (en) 2015-05-07

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Application Number Title Priority Date Filing Date
US14/404,868 Abandoned US20150123428A1 (en) 2012-06-18 2012-06-18 Cab protection apparatus for construction machinery

Country Status (4)

Country Link
US (1) US20150123428A1 (ko)
KR (1) KR20150022781A (ko)
DE (1) DE112012006544T5 (ko)
WO (1) WO2013191308A1 (ko)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160168823A1 (en) * 2014-12-11 2016-06-16 Komatsu Ltd. Guard-equipped cab for work vehicle and hydraulic excavator
US9441343B2 (en) 2014-12-11 2016-09-13 Komatsu Ltd. Work vehicle and operator protective guard
JP2017115357A (ja) * 2015-12-22 2017-06-29 株式会社クボタ キャノピ及びキャノピを備えた作業機
JP2017214759A (ja) * 2016-05-31 2017-12-07 ヤンマー株式会社 ガード体及びガード体を装備する建設機械
US20190225176A1 (en) * 2018-01-25 2019-07-25 Kubota Corporation Cabin-protection structure and tractor
CN112012256A (zh) * 2020-08-17 2020-12-01 合肥学院 一种zwy型矿用履带挖掘式装载机安全防护装置
US20210404144A1 (en) * 2019-03-15 2021-12-30 Kubota Corporation Front guard and working machine
JP6994003B2 (ja) 2019-03-22 2022-01-14 株式会社日立建機ティエラ 建設機械
US20220259819A1 (en) * 2021-02-12 2022-08-18 Liebherr-France Sas Operator's cabin having a protective grid
US11702145B2 (en) * 2021-06-30 2023-07-18 Nissan North America, Inc. Vehicle body structure

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUB20150409A1 (it) * 2015-04-22 2016-10-22 Same Deutz Fahr Italia S P A Cabina per un veicolo, in particolare per un trattore agricolo.

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JP5179418B2 (ja) * 2009-03-18 2013-04-10 日立建機株式会社 建設機械のガード固定装置
JP5173976B2 (ja) * 2009-10-13 2013-04-03 日立建機株式会社 建設機械のフロントガード取付装置

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US2997333A (en) * 1959-01-05 1961-08-22 Crane Rental Company Inc All-weather cab enclosure employing removable panels
US3410599A (en) * 1965-06-10 1968-11-12 Kettler Paul Erich Tractor cabins
US3692083A (en) * 1970-12-07 1972-09-19 Case Co J I Plural panel door assembly
US3967850A (en) * 1974-12-20 1976-07-06 Deere & Company Grab handle and door stop assembly
US3993346A (en) * 1975-05-27 1976-11-23 Caterpillar Tractor Co. Rear wall structure for a vehicle cab
US4273378A (en) * 1977-07-22 1981-06-16 Klockner-Humboldt-Deutz Aktiengesellschaft Vehicle door, especially for a driver's cab
US4940280A (en) * 1988-05-02 1990-07-10 Hunter Contracting Company Protection structure for heavy equipment
US4932714A (en) * 1988-09-16 1990-06-12 Harold Chance Demountable door for a golf cart or the like
US5044678A (en) * 1990-07-25 1991-09-03 Lectron Products, Inc. Solenoid operated latch device with movable pole piece
US5363866A (en) * 1992-06-24 1994-11-15 Vtz Engineering & Services Ag Method of cleaning containers, a rinsing assembly and an apparatus for cleaning containers
JP2746003B2 (ja) * 1992-08-28 1998-04-28 株式会社豊田自動織機製作所 キャビン車のドアオープンロック装置
US5616848A (en) * 1995-03-20 1997-04-01 Chrysler Corporation Plate testing apparatus and method of testing
US6132000A (en) * 1997-10-23 2000-10-17 Ikeda Bussan Co., Ltd. Lock releasing structure of seat back
WO2000060179A1 (fr) * 1999-03-31 2000-10-12 Shin Caterpillar Mitsubishi Ltd. Dispositif de fenetre
US6474705B1 (en) * 1999-04-02 2002-11-05 Komatsu Ltd. Cab window lock system
US6409457B1 (en) * 1999-10-15 2002-06-25 George Korycan Work vehicle
US20030192732A1 (en) * 2002-04-11 2003-10-16 James Warkentine System and method for controlling operation of a loader
US20040245755A1 (en) * 2002-08-20 2004-12-09 Eiji Akahane Shutter type guard apparatus for construction machine
JP2004143856A (ja) * 2002-10-25 2004-05-20 Shin Caterpillar Mitsubishi Ltd キャブ
CA2461249A1 (en) * 2004-03-17 2005-09-17 Laurie Gibson Protective blind for excavator windows
US20050242624A1 (en) * 2004-04-30 2005-11-03 Takeuchi Mfg. Co., Ltd. Operator cab for construction machine
US7131686B1 (en) * 2005-06-01 2006-11-07 Volvo Construction Equipment Holding Sweden Ab Operator protective structure installed on cabin of construction machine
US8403377B2 (en) * 2007-05-21 2013-03-26 Caterpillar Japan Ltd. Cab front window locking device
KR101363193B1 (ko) * 2007-11-29 2014-02-14 두산인프라코어 주식회사 건설기계의 캐빈 보호장치
US20090195026A1 (en) * 2008-01-31 2009-08-06 Christopher Dixon Bell Gas Strut Mounting To Door handle
US9266414B2 (en) * 2008-03-31 2016-02-23 Honda Motor Co., Ltd. Door device of small-sized vehicle
US20090302645A1 (en) * 2008-06-06 2009-12-10 Caterpillar Inc. Machine having trim piece assembly with reduced discordance and method
US20100264696A1 (en) * 2009-04-17 2010-10-21 Clark Equipment Company Releasable door hinge
WO2011025874A1 (en) * 2009-08-27 2011-03-03 Adc Custom, Llc Quick attach riser for cabin protection structure
DE102012102140A1 (de) * 2012-03-12 2013-09-12 Echle Hartstahl Gmbh Kabinenschutz
WO2014073723A1 (ko) * 2012-11-12 2014-05-15 볼보 컨스트럭션 이큅먼트 에이비 건설기계용 캐빈 보호장치
US20140292032A1 (en) * 2013-03-29 2014-10-02 Komatsu Ltd. Operator protective guard, guard-equipped cab for work machine, and work machine
DE102014105868A1 (de) * 2014-04-25 2015-10-29 Jürgen Wolf Schutzvorrichtung für eine Fahrerkabine eines Nutzfahrzeugs
WO2015087950A1 (ja) * 2014-12-11 2015-06-18 株式会社小松製作所 作業車両および運転員保護ガード
WO2015087951A1 (ja) * 2014-12-11 2015-06-18 株式会社小松製作所 ガード付き作業車両用キャブおよび油圧ショベル
DE202015003295U1 (de) * 2015-05-05 2015-06-17 Liebherr-Werk Bischofshofen Gmbh Arbeitsmaschine

Cited By (13)

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US20160168823A1 (en) * 2014-12-11 2016-06-16 Komatsu Ltd. Guard-equipped cab for work vehicle and hydraulic excavator
US9441343B2 (en) 2014-12-11 2016-09-13 Komatsu Ltd. Work vehicle and operator protective guard
US9469966B2 (en) * 2014-12-11 2016-10-18 Komatsu Ltd. Guard-equipped cab for work vehicle and hydraulic excavator
JP2017115357A (ja) * 2015-12-22 2017-06-29 株式会社クボタ キャノピ及びキャノピを備えた作業機
JP2017214759A (ja) * 2016-05-31 2017-12-07 ヤンマー株式会社 ガード体及びガード体を装備する建設機械
US20190225176A1 (en) * 2018-01-25 2019-07-25 Kubota Corporation Cabin-protection structure and tractor
US10857962B2 (en) * 2018-01-25 2020-12-08 Kubota Corporation Cabin-protection structure and tractor
US11643791B2 (en) * 2019-03-15 2023-05-09 Kubota Corporation Front guard and working machine
US20210404144A1 (en) * 2019-03-15 2021-12-30 Kubota Corporation Front guard and working machine
JP6994003B2 (ja) 2019-03-22 2022-01-14 株式会社日立建機ティエラ 建設機械
CN112012256A (zh) * 2020-08-17 2020-12-01 合肥学院 一种zwy型矿用履带挖掘式装载机安全防护装置
US20220259819A1 (en) * 2021-02-12 2022-08-18 Liebherr-France Sas Operator's cabin having a protective grid
US11702145B2 (en) * 2021-06-30 2023-07-18 Nissan North America, Inc. Vehicle body structure

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DE112012006544T5 (de) 2015-03-05
WO2013191308A1 (ko) 2013-12-27

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