WO2014034973A1 - Foldable step for construction vehicle, and construction vehicle provided with such a step - Google Patents

Foldable step for construction vehicle, and construction vehicle provided with such a step Download PDF

Info

Publication number
WO2014034973A1
WO2014034973A1 PCT/KR2012/006862 KR2012006862W WO2014034973A1 WO 2014034973 A1 WO2014034973 A1 WO 2014034973A1 KR 2012006862 W KR2012006862 W KR 2012006862W WO 2014034973 A1 WO2014034973 A1 WO 2014034973A1
Authority
WO
WIPO (PCT)
Prior art keywords
linkage
vehicle
foot plate
rotation axis
support
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.)
Ceased
Application number
PCT/KR2012/006862
Other languages
English (en)
French (fr)
Inventor
Ramkumar THIYAGARAJAN
Christian J
Shihab AZIZ
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
Priority to PCT/KR2012/006862 priority Critical patent/WO2014034973A1/en
Priority to IN413KON2015 priority patent/IN2015KN00413A/en
Priority to CN201280075338.2A priority patent/CN104583014B/zh
Publication of WO2014034973A1 publication Critical patent/WO2014034973A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R3/00—Arrangements of steps or ladders facilitating access to or on the vehicle, e.g. running-boards
    • B60R3/02—Retractable steps or ladders, e.g. movable under shock

Definitions

  • the present invention relates generally to a step for construction vehicle. More particularly, the invention relates to a step enabling a user to easily access the engine disposed in a space formed at the rear portion of the construction vehicle. It also relates to a construction vehicle having such a step.
  • the construction vehicle in this invention includes any kind of road machinery including but not limited to, tyred rollers, pneumatic tyred rollers, multi-wheeled rubber-tyred rollers, compactors, and etc.
  • Construction vehicles are generally bulky and have their riding rooms and engine rooms located at a relatively long distance from the ground, and therefore, there is a definite need for steps enabling a rider or an inspector to have easy access to the riding rooms or the engine rooms of the said construction vehicles.
  • a road machine like a pneumatic tyred roller has a substantially large wheel diameter and further has its engine room located at the rear portion at the top end of the machine.
  • the step on which the inspector stands to access the engine room In order to inspect the engine, which is located a relatively long distance from the ground, there is a need for the step on which the inspector stands to access the engine room.
  • construction vehicle 1 has an engine room disposed in a space at the rear portion of vehicle 1 and allowing access for inspection from the upper portion thereof.
  • vehicle 1 has fixed step 10 located on the rear portion thereof. Fixed step 10 protrudes outward by a given length from the rear portion of construction vehicle 1, so that an engine inspector can stably stand on fixed step 10 to access to the engine room.
  • fixed step 10 is removed when construction vehicle 1 is in transit from one site to another or during normal usage.
  • fixed step 10 is conveniently mounted again. If construction vehicle 1 is transferred or in use without the separation of the fixed step 10, there is a danger where the fixed step, located on the rear portion of the construction vehicle, could collide with neighboring objects and even become damaged. Additionally, as fixed step 10 is awkwardly protruding from the rear portion of construction vehicle 1, it will cause an unattractive outer appearance of construction vehicle 1.
  • the present invention has been made in view of the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a foldable step for a construction vehicle and a construction vehicle having the same wherein the foldable step is mounted in a foldable fashion on the rear portion of the construction vehicle while the construction vehicle is being transferred or in use, thereby reducing the protruding length thereof from the rear portion of the construction vehicle.
  • the foldable step unfolded, the engine of the construction vehicle is able to be inspected, thereby permitting an inspector to easily access the engine room of the construction vehicle.
  • Another object of the present invention is to provide a foldable step for a construction vehicle, or a similar construction vehicle, wherein a serviceable area for an engine inspector can be easily accessed by expanding the rotating the step in the desired direction.
  • a foldable step for a construction vehicle that has a support having one end fixed to the rear portion of the vehicle, a first rotation axis installed at the other end of the support, the first rotation axis being parallel with the axle of the vehicle, a linkage having one end connected with the support through the first rotation axis, whereby the linkage being rotatable relative to the support, a second rotation axis installed at the other end of the linkage, the second rotation axis being perpendicular to the axle of the vehicle, and a foot plate having one end connected with the linkage through the second rotation axis, whereby the foot plate being rotatable relative to the linkage, the other end of the foot plate being closer to the left side of the vehicle as the foot plate rotates in one direction and to the right side of the vehicle as the foot plate rotates in the other direction.
  • the foldable step further has a stopper installed between the support and the linkage to restrict the rotation of the linkage when the foot plate is facing upwards of the vehicle.
  • the foldable step for a construction vehicle is mounted folded on the rear portion of the construction vehicle while the construction vehicle is being transferred or travelled, thereby protruding outward to a substantially shorter length from the rear portion of the construction vehicle, so that the total length of the construction vehicle is reduced to remove the inconvenience where the step should be demounted from the rear portion of the construction vehicle and to allow the construction vehicle to fit easily in a given space when it is transferred.
  • the foldable step for a construction vehicle prevents the collision of the protruding portion thereof against any neighboring objects while the construction vehicle is in use.
  • the foldable step for a construction vehicle gives a smart and sophisticated outer appearance to the construction vehicle.
  • the foldable step for a construction vehicle is rotatable relative to the rotation axis formed on one side away from the center of the step in the state of being unfolded, thereby increasing the serviceable area for inspecting the engine of the construction vehicle through the foldable step.
  • FIG.1 is a schematic view showing a fixed step in conventional practices.
  • FIG.2 is a perspective view showing a foldable step for a construction vehicle according to one embodiment of the present invention.
  • FIG.3 is an exploded perspective view showing the foldable step for the construction vehicle according to one embodiment of the present invention.
  • FIG.4 is a side view showing the construction vehicle with the folded step according to one embodiment of the present invention.
  • FIG.5 is a side view showing the construction vehicle with the unfolded step according to one embodiment of the present invention.
  • FIG.6 is a side view showing the step in folded condition according to one embodiment of the present invention.
  • FIG.7 shows the step being in unfolded condition according to one embodiment of the present invention.
  • FIG.8 shows the step being rotated in a clockwise direction according to one embodiment of the present invention.
  • FIG.9 shows the state of the step in accordance with its rotating direction according to one embodiment of the present invention.
  • FIG.2 is a perspective view showing a foldable step for a construction vehicle according to one embodiment of the present invention
  • FIG.3 is an exploded perspective view showing the foldable step for the construction vehicle according to one embodiment of the present invention
  • FIG.4 is a side view showing the construction vehicle with the folded step according to one embodiment of the present invention
  • FIG.5 is a side view showing the construction vehicle with the unfolded step according to one embodiment of the present invention
  • FIG.6 is a side view showing the step in folded condition according to one embodiment of the present invention
  • FIG.7 shows the step in unfolded condition according to one embodiment of the present invention
  • FIG.8 shows the step rotated in a clockwise direction according to one embodiment of the present invention
  • FIG.9 shows the state of the step in accordance with its rotating direction according to one embodiment of the present invention.
  • foldable step 100 for construction vehicle 1 has support 110 having one end fixed to the rear portion of construction vehicle 1 and first rotation axis R1 installed at the other end of support 110.
  • the first rotation axis R1 here is parallel with the axle of construction vehicle 1.
  • step 100 has linkage 120 having one end connected with support 110 through first rotation axis R1, whereby linkage 120 is rotatable relative to support 110.
  • Second rotation axis R2 is installed at the other end of linkage 120.
  • Second rotation axis R2 here is perpendicular to the axle of vehicle 1.
  • Step 100 also has foot plate 130 having one end connected with linkage 120 through second rotation axis R2, whereby foot plate 130 is rotatable relative to linkage 120.
  • the other end of foot plate 130 is closer to the left side of vehicle 1 as foot plate 130 rotates in one direction and to the right side of vehicle 1 as foot plate 130 rotates in the other direction.
  • support 110 may curve upward to an angle of approximately 90 degrees. That is, the support may be L-shaped. Further, support 110 may be formed by a pair of flat bars which are spaced apart from each other in such a manner as to face each other, and the first rotation axis R1 is disposed between said flat bars.
  • Linkage 120 has one end connected rotationally to support 110 through the first rotation axis R1, whereby linkage 120 is rotatable relative to support 110 in a vertical direction of the axle of vehicle 1, thereby obtaining a first state where linkage 120 is folded and a second state where linkage 120 is unfolded.
  • the other end of support 110 and one end of linkage 120 are coupled to each other by means of the first rotation axis R1.
  • Second rotation axis R2 is installed at the other end of linkage 120, with second rotation axis R2 perpendicular to the axle of vehicle 1.
  • Foot plate 130 has one end connected rotationally to the other end of linkage 120 through second rotation axis R2.
  • linkage 120 may have rotation axis hole 124 formed at the other end thereof, and foot plate 130 may have rotation axis protrusion 132 formed on the underside thereof in such a manner as to be inserted into the rotation axis hole 124, thereby permitting plate 130 to be rotatable relative to the linkage 120.
  • the other end of foot plate 130 is closer to the left side of the vehicle 1 as foot plate 130 rotates in one direction and to the right side of vehicle 1 as foot plate 130 rotates in the other direction.
  • second rotation axis R2 is formed at any one side distant from the center of foot plate 130.
  • rotation axis protrusion 132 can be formed on lower surface of foot plate 130 toward one side distant from the center of foot plate 130.
  • foot plate 130 is rotated clockwise or counterclockwise, so that it is alternatively closer to the left and right side of the vehicle 1, thereby expanding the serviceable area of step 100.
  • the closer second rotation axis R2 is formed to one end of foot plate 130, the greater the position of foot plate 130 caused by the rotation thereof is, thereby advantageously increasing the serviceable area of foot plate 130.
  • the step further has stopper 122 disposed between support 110 and linkage 120.
  • Stopper 122 serves to restrict the rotation of linkage 120 at a given position when foot plate 130 faces upwards of construction vehicle 1, so that linkage 120 can maintain the second state where linkage 120 is unfolded. This is achieved by having stopper 122 protrude from linkage 120 in such a manner as to be engaged with the upwardly extended outer wall of L-shaped support 110 and by supporting linkage 120 against support 110.
  • Linkage 120 has securing holes 126 and 128 formed on each of both sides thereof, and foot plate 130 has hole 136 formed on one side thereof to correspond to securing hole 126 formed on one side of linkage 120 at the time when foot plate 130 is rotated clockwise and hole 138 formed on the other side thereof to correspond to securing hole 128 formed on the other side of linkage 120 at the time when the foot plate 130 is rotated counterclockwise.
  • linkage 120 has a hole formed in the upper portion of the other end thereof to correspond to securing hole 4 formed on the rear portion of vehicle 1 in the first state where linkage 120 is folded.
  • foot plate 130 may have hole 134 corresponding to securing hole 4 in the first state on the one end thereof.
  • lock pin 140 is selectively inserted into corresponding holes 126 and 136, and holes 128 and 138, to fix the position of foot plate 130 to linkage 120.
  • foot plate 130 is fixed to linkage 120 by means of lock pin 140 passed through hole 136 formed on foot plate 130 and inserted into securing hole 126 formed on linkage 120 to correspond to hole 136.
  • lock pin 140 passes through hole 138 formed on foot plate 130 and inserted into securing hole 128 formed on linkage 120 to correspond to hole 138.
  • lock pin 140 is inserted and passed through holes 4 and 134 to fix foldable step 100 to vehicle 1, so that step 100 can maintain the first state where linkage 120 is folded.
  • the upper surface of foot plate 130 is facing towards vehicle 1.
  • lock pin 140 may have pulling link 142 mounted on the top end thereof to easily pull inserted lock pin 140 from the holes.
  • lock pin 140 is connected to one end of foot plate 130 by means of a connection member such as a link, a cable and the like, thereby being easily kept in the original position thereof.
  • a connection member such as a link, a cable and the like
  • Foot plate 130 has a non-slip surface formed on the upper surface thereof to prevent a worker from slipping off step 100.
  • the non-slip surface has plurality of non-slip protrusions 150 formed on the upper surface of foot plate 130.
  • foot plate 130 has a plurality of holes formed on the surface thereof so as to remove any foreign matter like soil and sand attached to the worker’s shoes from step 100.
  • Plurality of non-slip protrusions 150, having the non-slip function is not limited to the shapes shown in the drawings, and they may be freely shaped as long as they have the non-slip function.
  • a construction vehicle may be a road machine like a pneumatic tyred roller.
  • the construction vehicle is not limited only to road machines, and includes all kinds of construction vehicles having an engine room formed on the top end of the rear portion thereof, such as rollers, bulldozers, wheel dozers, wheel loaders, motor graders, pavers, road re-claimers, excavators, road machinery, tyred rollers, pneumatic tyred rollers, multi-wheeled rubber-tyred rollers, compactors and the like.
  • step 100 can be folded at that time.
  • step 100 gives a smart and sophisticated outer appearance to vehicle 1.
  • step 100 is unfolded and rotated to permit the engine inspector to stand thereon. As a result, step 100 can be easily utilized.
  • step 100 is folded in such a manner where linkage 120 and foot plate 130 are folded upwards of support 110. So as to maintain the first state where step 100 is folded, further, hole 4 formed on one side of the construction vehicle 1 corresponds to hole 134 formed on one end of foot plate 130, and after that, lock pin 140 is inserted into corresponding holes 4 and 134 linking them to each other.
  • step 100 so as to inspect the engine of vehicle 1, as shown in FIG.7, lock pin 140 is removed from holes 4 and 134, and linkage 120 and foot plate 130 are unfolded. At this time, stopper 122 disposed on the underside of linkage 120 is engaged with the outer wall of the upwardly protruded portion of L-shaped support 110, so that linkage 120 is supported against support 110, thereby being maintained in the second state.
  • foot plate 130 is rotatable in desired directions, and as shown in FIG.8, the foot plate 130 is rotated by an angle of 90 degrees clockwise to allow hole 126 formed on one side of linkage 120 to correspond to hole 136 formed on one side of foot plate 130.
  • lock pin 140 is inserted into corresponding holes 126 and 136 to fix foot plate 130.
  • foot plate 130 is rotated by an angle of 90 degrees counterclockwise in the unfolded state to allow hole 128 formed on the other side of linkage 120 to correspond to hole 138 formed on the other side of foot plate 130.
  • lock pin 140 is fittingly inserted into corresponding holes 128 and 138 to fix foot plate 130.
  • the rotation axis of foot plate 130 is formed toward one side of foot plate 130, thereby further expanding the serviceable area of foot plate 130.
  • the serviceable area of foot plate 130 as shown by the solid line of FIG.9 can be obtained, and in this position, the other end of foot plate 130 is closest to the right side of the vehicle.
  • the serviceable area of foot plate 130 as shown by the dotted line of FIG.9 can be obtained, and in this position, the other end of foot plate 130 is closest to the left side of the vehicle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Step Arrangements And Article Storage (AREA)
  • Road Signs Or Road Markings (AREA)
  • Mechanical Control Devices (AREA)
PCT/KR2012/006862 2012-08-28 2012-08-28 Foldable step for construction vehicle, and construction vehicle provided with such a step Ceased WO2014034973A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/KR2012/006862 WO2014034973A1 (en) 2012-08-28 2012-08-28 Foldable step for construction vehicle, and construction vehicle provided with such a step
IN413KON2015 IN2015KN00413A (https=) 2012-08-28 2012-08-28
CN201280075338.2A CN104583014B (zh) 2012-08-28 2012-08-28 用于施工车辆的可折叠踏板和设置有这种踏板的施工车辆

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/KR2012/006862 WO2014034973A1 (en) 2012-08-28 2012-08-28 Foldable step for construction vehicle, and construction vehicle provided with such a step

Publications (1)

Publication Number Publication Date
WO2014034973A1 true WO2014034973A1 (en) 2014-03-06

Family

ID=50183768

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2012/006862 Ceased WO2014034973A1 (en) 2012-08-28 2012-08-28 Foldable step for construction vehicle, and construction vehicle provided with such a step

Country Status (3)

Country Link
CN (1) CN104583014B (https=)
IN (1) IN2015KN00413A (https=)
WO (1) WO2014034973A1 (https=)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110154906A (zh) * 2018-07-20 2019-08-23 杭州天铭科技股份有限公司 车用踏板设备及其伸缩装置
BE1029324B1 (fr) * 2021-04-20 2022-11-21 Bardes Dispositif anti-effraction pour véhicule comprenant un élément marchepied
DE102022108418A1 (de) 2022-04-07 2023-10-12 HeidelbergCement Logistik GmbH Schwenkbare Stufe für einen Fahrmischer

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10183623B2 (en) * 2016-09-06 2019-01-22 Ford Global Technologies, Llc Tailgate assembly with deployable cantilevered step
CN108100290B (zh) * 2017-11-29 2021-03-26 中国直升机设计研究所 一种直升机旋转式脚踏
US11208045B2 (en) * 2018-11-19 2021-12-28 Magna Exteriors, Inc. Power retractable bumper step
CN112081321A (zh) * 2020-09-09 2020-12-15 长沙美登机电工程有限公司 一种折叠楼梯及隐藏式救援通道结构
KR102869103B1 (ko) * 2020-10-23 2025-10-13 현대자동차주식회사 사이드 스텝 시스템 및 사이드 스텝을 포함하는 차량

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5738362A (en) * 1996-07-02 1998-04-14 Ludwick; Lanny E. Rotating step for a trailer hitch
US6168176B1 (en) * 1998-12-23 2001-01-02 Bad River, Inc. Accessing step construction on downwardly curved vehicle bumpers and methods of operating and constructing it
US20030116938A1 (en) * 2003-02-04 2003-06-26 Scott Shields Vehicle tailgate step
US7954836B2 (en) * 2009-06-18 2011-06-07 Mann James H Truckbed access apparatus
WO2012011047A2 (en) * 2010-07-20 2012-01-26 Multimatic Patentco Llc Dual motion deployable vehicle access step

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3627350A (en) * 1969-12-31 1971-12-14 Denver F Cross Bumper flip step
JPS58118430A (ja) * 1982-01-07 1983-07-14 Kinugawa Rubber Ind Co Ltd トラツクの荷台用ステツプ
SE517908C2 (sv) * 2000-04-11 2002-07-30 Volvo Articulated Haulers Ab Drivmotorhus
CN2806241Y (zh) * 2005-06-30 2006-08-16 百盈实业股份有限公司 车辆用上下车辅助装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5738362A (en) * 1996-07-02 1998-04-14 Ludwick; Lanny E. Rotating step for a trailer hitch
US6168176B1 (en) * 1998-12-23 2001-01-02 Bad River, Inc. Accessing step construction on downwardly curved vehicle bumpers and methods of operating and constructing it
US20030116938A1 (en) * 2003-02-04 2003-06-26 Scott Shields Vehicle tailgate step
US7954836B2 (en) * 2009-06-18 2011-06-07 Mann James H Truckbed access apparatus
WO2012011047A2 (en) * 2010-07-20 2012-01-26 Multimatic Patentco Llc Dual motion deployable vehicle access step

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110154906A (zh) * 2018-07-20 2019-08-23 杭州天铭科技股份有限公司 车用踏板设备及其伸缩装置
CN110154906B (zh) * 2018-07-20 2024-05-14 杭州天铭科技股份有限公司 车用踏板设备及其伸缩装置
BE1029324B1 (fr) * 2021-04-20 2022-11-21 Bardes Dispositif anti-effraction pour véhicule comprenant un élément marchepied
DE102022108418A1 (de) 2022-04-07 2023-10-12 HeidelbergCement Logistik GmbH Schwenkbare Stufe für einen Fahrmischer
DE102022108418B4 (de) 2022-04-07 2025-11-06 HeidelbergCement Logistik GmbH Schwenkbare Stufe für einen Fahrmischer

Also Published As

Publication number Publication date
IN2015KN00413A (https=) 2015-07-17
CN104583014A (zh) 2015-04-29
CN104583014B (zh) 2017-03-08

Similar Documents

Publication Publication Date Title
WO2014034973A1 (en) Foldable step for construction vehicle, and construction vehicle provided with such a step
CN101470083B (zh) 用于车载式辐射成像系统的新型折臂机构
US20120024923A1 (en) Telescopic bicycle carrier
KR100880390B1 (ko) 자전거 접이식 거치대
WO2012050285A1 (ko) 트랙터의 조향 장치
WO2012086862A1 (ko) 건설기계용 경광램프 고정장치
CA2731644A1 (en) Hitch attached extension for over sized cargo
WO2012091197A1 (en) Wheel drive vehicle and wheel contact sensing method of the same
WO2015178511A1 (ko) 건설 중장비용 접이식 레일
US20130270788A1 (en) Unitized Hydraulic Suspension System
CN208792369U (zh) 一种窨井
KR20160048472A (ko) 전술교량
CN104903127B (zh) 机动车
WO2014081196A1 (ko) 농작업차의 보닛 개폐를 위한 힌지 조립체 및 이 힌지 조립체에 의한 농작업차 보닛의 힌지구조
WO2015012429A1 (ko) 케이블 이탈방지 유닛이 설치된 자립형 케이블 트레이 시설
WO2016186433A1 (ko) 자전거용 머드가드
CN117306840A (zh) 电梯井道可收折悬挑操作平台及其施工方法
CN104709849A (zh) 用于移动车辆的手动液压搬运车
US6561750B1 (en) Tilting platform for roll testing automotive vehicles
CN212341478U (zh) 一种可升降折叠的车辆检查装置
CN203902404U (zh) 步兵登车梯
WO2023128023A1 (ko) 틸팅형 셀프로더 갖는 트럭
CN211286008U (zh) 一种快连式行走轮
CN102826141A (zh) 连接装置及具有其的工程机械和多轴车辆
WO2011019109A1 (ko) 자전거 거치대의 바퀴 고정구

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12883843

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12883843

Country of ref document: EP

Kind code of ref document: A1