WO2017008222A1 - Système d'arceaux de sécurité - Google Patents

Système d'arceaux de sécurité Download PDF

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Publication number
WO2017008222A1
WO2017008222A1 PCT/CN2015/083859 CN2015083859W WO2017008222A1 WO 2017008222 A1 WO2017008222 A1 WO 2017008222A1 CN 2015083859 W CN2015083859 W CN 2015083859W WO 2017008222 A1 WO2017008222 A1 WO 2017008222A1
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WO
WIPO (PCT)
Prior art keywords
sunshade
rops
roll
protection system
vehicle
Prior art date
Application number
PCT/CN2015/083859
Other languages
English (en)
Inventor
Gary YU
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/CN2015/083859 priority Critical patent/WO2017008222A1/fr
Publication of WO2017008222A1 publication Critical patent/WO2017008222A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/13—Roll-over protection
    • B60R21/131—Protective devices for drivers in case of overturning of tractors

Definitions

  • the present disclosure relates toroll-over protection systems for vehicles and, more particularly, to foldable roll-over structures for construction vehicles such as wheel loaders, compactors, and graders.
  • ROPS Roll-over Protection Structure
  • wheel loaders, compactors, graders and otherconstruction vehicles may be equipped with Roll-over Protection Structure (ROPS) systems, i.e. , roll-over protection systems, which provide a structure for supporting the weight of the vehicle in the event of the vehicles rollover to absorb related impact energytherebyprotecting operators from injuries.
  • ROPS Roll-over Protection Structure
  • ROPS are four-post ROPS or two-post ROPS.
  • Four-post ROPS are usually used in cabs. If a cab is not provided to a vehicle and an operator seat is exposed, two-post ROPS may be used.
  • Each post of the two-post ROPS may be curved and welded tubes.
  • some roll-over protection systems provide a foldable two-part arrangement, whereinan upper structure is pivotally connected to one end of a lower structure.
  • the upper structure could be folded down relative to the lower structurefrom a higher operative position to a lower inoperative position.
  • the other end of the lower structure is usually welded on aplatform of the vehicle or bolted on the chassis of the vehicle, and the upper structure and the lower structure are connected by pins or bolts.
  • a sunshade is provided together with the ROPS. For two-post ROPS, the sunshade may be bolted onto it.
  • the sunshade also needs to be made to be folded down to a lower inoperative position, and the folding and unfolding processes need to beconducted easily with less effort.
  • the heavier the vehicles are stronger ROPS systems are required to protect operators.
  • the upper structure and sunshade are too heavy for operators to fold or unfold.
  • operators should be able to fold and unfold the upper structure and sunshade on the safety platform, without placing himself/herself on tires or some other unsafe places.
  • the unfolded structure shouldbe steady during transportation.
  • the roll-over protection system for a vehicle includes a lower ROPS, an upper ROPS pivotally coupled to the lower ROPS, and a sunshade pivotally coupled to the upper ROPS. Also provided is a strap retractor on the sunshade with which an operator canconduct all operations easily on the safety platform, without placing himself/herself on tires or some other unsafe places.
  • the strap retractor includes a strap box and a strap having a strap end.
  • the strap box is fixed to a position on the sunshade and the strap end is fixed to a different position on the sunshade so that at least some part of the strap is exposed above the sunshade.
  • the roll-over protection system further includes an unfolding assist assembly coupled to the upper ROPS and to the lower ROPS.
  • the roll-over protection system further includes an unfolding assist assembly coupled to the sunshade and the upper ROPS.
  • FIG. 1 is a side view of a vehicle having a roll-over protection system according to an embodiment of the present disclosure in its fully unfolded position;
  • FIG. 2 is a side view of a vehicle having a roll-over protection system according to an embodiment of the present disclosure of which thesunshade is folded but the upper ROPS is unfolded;
  • FIG. 3 is a side view of a vehicle having a roll-over protection system according to an embodiment of the present disclosure in its fully folded position;
  • FIG. 4 is a perspective rear view of a roll-over protection system according to an embodiment of the present disclosure showing the sunshade and the upper ROPS;
  • FIGS. 5 to 8 are detailed views of a roll-over protection system according to an embodiment of the present disclosure showing part of the upper ROPS and part of the lower ROPS;
  • FIGS. 9 is a general sectional view of a roll-over protection system according to an embodiment of the present disclosure showing the stopper.
  • FIG. 10 is a perspective front view of a roll-over protection system according to an embodiment of the present disclosure showing the sunshade and the upper ROPS.
  • FIG. 11 is a side view of a vehicle having a roll-over protection system according to another embodiment of the present disclosure in its fully unfolded position;
  • FIG. 12 is a side view of a vehicle having a roll-over protection system according to another embodiment of the present disclosure of which the sunshade is folded but the upper ROPS is unfolded;
  • FIG. 13 is a side view of a vehicle having a roll-over protection system according to another embodiment of the present disclosure in its fully folded position;
  • FIG. 14 is a perspective rear view of a roll-over protection system according to another embodiment of the present disclosure showing the sunshade and the upper ROPS;
  • FIGS. 15 to 18 are detailed views of a roll-over protection system according to another embodiment of the present disclosure showing part of the upper ROPS and part of the lower ROPS;
  • FIGS. 19 is a general sectional view of a roll-over protection system according to another embodiment of the present disclosure showing the stopper.
  • FIG. 20 is a perspective front view of a roll-over protection system according to another embodiment of the present disclosure showing the sunshade and the upper ROPS.
  • FIGS. 1 to 3 show a vehicle 10 in its entirety having a roll-over protection system 20according to an embodiment of the present disclosure, with the roll-over protection system 20 in different states or positions.
  • Vehicle 10 may be a wheel loader, a compactor, a grader or any other type of construction vehicle.
  • theroll-over protection system 20 includes a lower ROPS 30 having a pair of posts 34. Posts 34 have an upper end 36 and a lower end 38. Lower ends 38 of posts 34 are fixed to the vehicle 10 by welding on a platform 11 or bolting ontochassis 12.
  • the roll-over protection system 20 further includes an upper ROPS 40 pivotally coupled to lower ROPS 30.
  • upper ROPS 40 is a frame having a pair of legs 42 connected by a cross bar 44.
  • brackets 60 are mounted (e.g. welded or bolted) on legs 42 of upper ROPS 40
  • hinges 50 are mounted (e.g. welded or bolted) on the upper ends 36 of posts 34 of lower ROPS 30.
  • Hinges 50 each have two side members.
  • Each bracket 60 is pivotally connected to each respective hinge 50 such that upper ROPS 40 is rotatable about an axis defined by hinge pin 54 penetrating hinge hole 55disposedin hinge 50 and respective hole disposed in bracket 60.
  • hinges 50 each have holes 52, 53 for locking.
  • brackets 60 each have holes 62, 63 for locking.
  • Holes 53 in hinges 50 and holes 63 in brackets 60furthest from hinge pin 54 are adapted to receive locking pins 56 which maintain upper ROPS 40 in an unfolded position with respect to posts 34 (see FIGS. 5 and 7) .
  • Holes 52 in hinges 50 and holes 62 in brackets 60 close to hinge pin 54 are adapted to receive locking pins 56 which maintain upper ROPS 40 in a folded position with respect to posts 34 (see FIGS. 6 and 8) .
  • hinge pin 54 can be fixed by split pin 58 so that hinge pin 54 can be fixed almost permanently in the hinge hole 55.
  • one end of locking pin 56 can be fixed by a clevis pin 57 so that locking pin 56 can berelatively easily moved between different holes 52, 53 for locking.
  • a stopper 39 is mounted at the position where bracket 60 contacts post34 when the upper ROPS 40 is in its folded position.
  • Stopper 39 may be mounted to one or both of bracket 60 and post 34.
  • stopper 39 is mounted to post 34 by inserting the same through a hole formed in post 34.
  • Stopper 39 may be madeof rubber or any suitable material, if only stopper 39 can be made to keep upper ROPS 40 in its folded position correctly so that locking pin 56 can penetrate hinge 50 and bracket 60 easily.
  • roll-over protection system 20 also include an unfolding assist assembly 46 coupled to upper ROPS 40 and to lower ROPS 30.
  • Unfolding assist assembly 46 is connected to a bracket 70 mounted on a leg 42 of upper ROPS 40.
  • Unfolding assist assembly 46 is an energy storing member such as a gas spring. Energy is stored in unfolding assist assembly 46 when upper ROPS 40 is moved to its folded position. The stored energy aids an operator in raising upper ROPS 40 to its unfolded position, thereby reducing the force with which the operator is required to exert when rotating upper ROPS 40 to its unfolded position.
  • gas spring while upper ROPS 40 is folding down, the gas spring get pressed and supports upper ROPS 40.
  • Roll-over protection system 20 further includes a sunshade 80 pivotally coupled to upper ROPS 40.
  • sunshade 80 has a sunshade frame 82 supporting the shape of sunshade to be maintained.
  • hinges 90 are mounted (e.g. welded or bolted) on rear part of sunshade 80
  • brackets 92 are mounted (e.g. welded or bolted) to the upper ROPS 40, for example, to legs 42.
  • the construction regarding holes in the hinges 90 and brackets 92, and pins used for hinging or locking are similar to the construction described in relation to the pivotal coupling of upper ROPS 40 and lower ROPS 30, and thus, a detailed description regarding the same is omitted.
  • Strap retractor 94 to sunshade 80 and this helps an operator to conduct all operations easily on platform 11, without placing himself/herself on tires or some other unsafe places.
  • Strap retractor 94 includes a strap box 96 and s strap 98 having a strap end 99. Strap box 96 is fixed to a position of sunshade 80, and strap end 99 is fixed to a different position of sunshade 80 so that at least some part of the strap 98 is exposed above the sunshade 80. Some part of the strap may also be exposed below the sunshade.
  • sunshade 80 and upper ROPS 40 When an operator wants to fold sunshade 80 and upper ROPS 40, the operator stands on one side of platform 11 and releases locking of sunshade 80 and then the sunshade 80 will be folded automatically by gravity from the unfolded position shown in FIG. 1 into the folded position shown in FIG. 2. During this folding process, the operator can hold the sunshade 80 via handle (not shown) on the sunshade 80to slow down the folding speed. Then, the operatorlocks sunshade 80 relative to upper ROPS 40 using means for locking such as locking pins. Thereafter, the operatorreleasesthe locking of upper ROPS 40 and pushessunshade 80 backward to move into the position shown in FIG. 3 and finally locksthis position using locking pins 56 appropriately.
  • Strap box 96 may be fixed in the front lower part of the sunshade and strap end 99 is fixed in the rear part of the sunshade. This enables strap 98 to cover from the front lower part to the rear upper part of the sunshade 80, and an operator can be benefit from this in view of easiness of folding and unfolding work.
  • Strap box 96 and strap 98 may be positioned along the longitudinal central line of sunshade 80. However, strap box 96 and strap 98 may also be positioned near one side of the sunshade 80, which enables an operator to conduct the folding and unfolding work at one side of platform without interfering or colliding with sunshade 80.
  • Strap retractor 94 is chosen because, as strap 98 can always contact sunshade 80 tightly, the related arrangement looks tidy and does not hinderan operator in any way when doing normal workwith the vehicle.
  • any other means such as a simple strap disposed in similar way as the strap retractor, can be used for the purpose of helping an operator to conduct all operations easily on platform 11, without placing himself/herself on tires or any other unsafe places.
  • FIGS. 11 to 13 show a vehicle 110 in its entirety having a roll-over protection system 120 according to another embodiment of the present disclosure, with the roll-over protection system 120 in different states or positions.
  • Vehicle 110 may be a wheel loader, a compactor, a grader or any other type of construction vehicle.
  • the roll-over protection system 120 includes a lower ROPS 130 having a pair of posts 134. Posts 134 have an upper end 136 and a lower end 138. Lower ends 138 of posts 134 are fixed to the vehicle 110 by welding on a platform 111 or bolting onto chassis 112.
  • the roll-over protection system 120 further includes an upper ROPS 140 pivotally coupled to lower ROPS 130.
  • upper ROPS 140 is a frame having a pair of legs 142 connected by a cross bar 144.
  • brackets 160 are mounted (e.g. welded or bolted) on legs 142 of upper ROPS 140
  • hinges 150 are mounted (e.g. welded or bolted) on the upper ends 136 of posts 134 of lower ROPS 130.
  • Hinges 150 each have two side members.
  • Each bracket 160 is pivotally connected to each respective hinge 150 such that upper ROPS 140 is rotatable about an axis defined by hinge pin 154 penetrating hinge hole 155 disposed in hinge 150 and respective hole disposed in bracket 160.
  • hinges 150 each have holes 152, 153 for locking.
  • brackets 160 each have holes 162, 163 for locking (See FIG. 17 for 162) .
  • Holes 153 in hinges 150 and holes 163 in brackets 160 furthest from hinge pin 154 are adapted to receive locking pins 156 which maintain upper ROPS 140 in an unfolded position with respect to posts 134 (see FIGS. 15 and 17) .
  • Holes 152 in hinges 150 and holes 162 in brackets 160 close to hinge pin 154 are adapted to receive locking pins 156 which maintain upper ROPS 140 in a folded position with respect to posts 134 (see FIGS. 16 and 18) .
  • hinge pin 154 can be fixed by split pin 158 so that hinge pin 154 can be fixed almost permanently in the hinge hole 155.
  • one end of locking pin 156 can be fixed by a clevis pin 157 so that locking pin 156 can be relatively easily moved between different holes 152, 153 for locking.
  • a stopper 139 is mounted at the position where bracket 160 contacts post134 when the upper ROPS 140 is in its folded position.
  • Stopper 139 may be mounted to one or both of bracket 160 and post 134.
  • stopper 139 is mounted to post 134 by inserting the same through a hole formed in post 134.
  • Stopper 139 may be made of rubber or any suitable material, if only stopper 139 can be made to keep upper ROPS 140 in its folded position correctly so that locking pin 156 can penetrate hinge 150 and bracket 160 easily.
  • roll-over protection system 120 also include an unfolding assist assembly 146 coupled to upper ROPS 140 and to lower ROPS 130.
  • One end of the unfolding assist assembly 146 is connected to a bracket 170 mounted on a leg 142 of upper ROPS 140, but unlike the first embodiment, the other end is connected to a post 134 of lower ROPS 130 instead of connecting to a hinge 150 mounted on the upper end 136 of the post.
  • This configuration permits the use of longer unfolding assist assembly 146, which can be more helpful when the weight of upper ROPS 140 and sunshade 180 is large as more energy will be stored in unfolding assist assembly 146.
  • Unfolding assist assembly 146 is an energy storing member such as a gas spring.
  • Roll-over protection system120 further includes a sunshade 180 pivotally coupled to upper ROPS 140.
  • sunshade 180 has a sunshade frame 182 supporting the shape of sunshade to be maintained.
  • hinges 190 are mounted (e.g. welded or bolted) on rear part of sunshade 180, and brackets 192 are mounted (e.g. welded or bolted) to the upper ROPS 140, for example, to legs 142.
  • a first latch 186 and a second latch 187 which is adapted to be engaged with the first latch 186 is used in the present embodiment.
  • the first latch 186 is mounted (e.g. welded or bolted) on rear part of sunshade 180
  • the second latch 187 is mounted (e.g. welded or bolted) to the upper ROPS 140.
  • These latches 186, 187 can be any type of mechanical fastener used to join and locksunshade 180 to upper ROPS 140 in its unfolded position while allowing for eventual separation of the sunshade 180 and upper ROPS 140. With the use of these latches 186, 187, an operator can easily lock or unlock sunshade 180 with respect to upper ROPS 140, and sunshade 180 can be very stale in its unfolded state.
  • an unfolding assist assembly 185 coupled to sunshade 180 and to upper ROPS 140 is additionally provided in the present embodiment.
  • Unfolding assist assembly 185 is an energy storing member such as a gas spring. Energy is stored in unfolding assist assembly 185 when sunshade 180 is moved to its folded position. The stored energy aids an operator in raising sunshade 180 to its unfolded position, thereby reducing the force with which the operator is required to exert when rotating sunshade 180 to its unfolded position.
  • gas spring while sunshade 180 is folding down, the gas spring get pressed and supports sunshade 180.
  • a strap holder 183 which is to be tied with a strap 184 is provided to sunshade 180.
  • strap holders can be mounted to at least one of sunshade 180 and upper ROPS 140. An operator can tie the folded sunshade 180 to upper ROPS 140 using this strap holder 183 and a strap 184 as can be seen in FIG. 14 and this can be helpful to lock the sunshade in its folded position.
  • Strap retractor 194 to sunshade 180 and this helps an operator to conduct all operations easily on platform 111, without placing himself/herself on tires or some other unsafe places.
  • Strap retractor 194 includes a strap box 196 and s strap 198 having a strap end 199. Strap box 196 is fixed to a position of sunshade 180, and strap end 199 is fixed to a different position of sunshade180 so that at least some part of the strap is exposed above the sunshade. Some part of the strap may also be exposed below the sunshade.
  • sunshade 180 and upper ROPS 140 When an operator wants to fold sunshade 180 and upper ROPS 140, the operator stands on one side of platform 111 and releases locking of sunshade 180 using latches 186, 187, and then the sunshade 180 will be folded automatically by gravity from the unfolded position shown in FIG. 11 into the folded position shown in FIG. 12. During this folding process, it is not necessary for the operator to hold or support the sunshade 180 because of the support fromthe unfolding assist assembly 185. Then, the operator locks sunshade 180 relative to upper ROPS 140 using a strap 184 which can tie the folded sunshade 180 to upper ROPS 140. Thereafter, the operator releases the locking of upper ROPS 140 and pushes sunshade 180 backward to move into the position shown in FIG. 13 and finally locks this position using locking pins 156 appropriately.
  • Strap box 196 may be fixed in the front lower part of the sunshade and strap end 199 is fixed in the rear part of the sunshade. This enables strap 198 to cover from the front lower part to the rear upper part of the sunshade 180, and an operator can be benefit from this in view of easiness of folding and unfolding work.
  • Strap box 196 and strap 198 may be positioned along the longitudinal central line of sunshade 180. However, strap box 196 and strap 198 may also be positioned near one side of the sunshade180, which enables an operator to conduct the folding and unfolding work at one side of platform without interfering or colliding with sunshade 180.
  • Strap retractor 194 is chosen because, as strap 198 can always contact sunshade 180 tightly, the related arrangement looks tidy and does not hinder an operator in any way when doing normal work with the vehicle.
  • any other means such as a simple strap disposed in similar way as the strap retractor, can be used for the purpose of helping an operator to conduct all operations easily on platform 111, without placing himself/herself on tires or any other unsafe places.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

L'invention concerne un système d'arceaux de sécurité (20) pour un véhicule (10) comprenant un système d'arceaux de sécurité (ROPS) inférieur (30), un ROPS supérieur (40) accouplé de façon pivotante au ROPS inférieur (30), un pare-soleil (80) accouplé de façon pivotante au ROPS supérieur (40) et un rétracteur de sangle (94) fixé au pare-soleil (80). Le rétracteur de sangle (94) comprend une boîte de sangle (96) et une sangle (98) présentant une extrémité de sangle (99). La boîte de sangle (96) est fixée au niveau d'une position sur le pare-soleil (80) et l'extrémité de sangle (99) est fixée au niveau d'une position différente sur le pare-soleil (80) de sorte qu'au moins une certaine partie de la sangle (98) soit exposée au-dessus du pare-soleil (80). Le système d'arceaux de protection (20) peut être plié et déplié facilement et est stable pendant le transport.
PCT/CN2015/083859 2015-07-13 2015-07-13 Système d'arceaux de sécurité WO2017008222A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2015/083859 WO2017008222A1 (fr) 2015-07-13 2015-07-13 Système d'arceaux de sécurité

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2015/083859 WO2017008222A1 (fr) 2015-07-13 2015-07-13 Système d'arceaux de sécurité

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WO2017008222A1 true WO2017008222A1 (fr) 2017-01-19

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3248846A1 (fr) * 2016-05-27 2017-11-29 Kubota Corporation Véhicule de travail
JP2020059447A (ja) * 2018-10-12 2020-04-16 株式会社クボタ 作業車
JP2020079008A (ja) * 2018-11-13 2020-05-28 株式会社クボタ 作業車

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4408672A (en) * 1981-01-26 1983-10-11 Clark Equipment Company Latch mechanism for a skid-steer loader with a roll over protective structure having a tilt-back capability
JPH079928A (ja) * 1993-06-25 1995-01-13 Kubota Corp 走行車両のロプス装置
JPH10113005A (ja) * 1996-10-09 1998-05-06 Kubota Corp 作業機のヒッチ支持構造
US5779272A (en) * 1996-11-07 1998-07-14 Case Corporation Roll-over protection system
DE202006011202U1 (de) * 2006-07-20 2006-11-09 Schmitt, Peter Johann Spanngurt - Aufroller
WO2007130121A1 (fr) * 2006-05-01 2007-11-15 Full Vision, Inc. Structure repliable de sécurité anti-retournement
CN102211562A (zh) * 2010-04-09 2011-10-12 宝马格有限公司 能够枢转的翻车保护杆

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4408672A (en) * 1981-01-26 1983-10-11 Clark Equipment Company Latch mechanism for a skid-steer loader with a roll over protective structure having a tilt-back capability
JPH079928A (ja) * 1993-06-25 1995-01-13 Kubota Corp 走行車両のロプス装置
JPH10113005A (ja) * 1996-10-09 1998-05-06 Kubota Corp 作業機のヒッチ支持構造
US5779272A (en) * 1996-11-07 1998-07-14 Case Corporation Roll-over protection system
WO2007130121A1 (fr) * 2006-05-01 2007-11-15 Full Vision, Inc. Structure repliable de sécurité anti-retournement
DE202006011202U1 (de) * 2006-07-20 2006-11-09 Schmitt, Peter Johann Spanngurt - Aufroller
CN102211562A (zh) * 2010-04-09 2011-10-12 宝马格有限公司 能够枢转的翻车保护杆

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3248846A1 (fr) * 2016-05-27 2017-11-29 Kubota Corporation Véhicule de travail
JP2020059447A (ja) * 2018-10-12 2020-04-16 株式会社クボタ 作業車
JP7005465B2 (ja) 2018-10-12 2022-01-21 株式会社クボタ 作業車
JP2020079008A (ja) * 2018-11-13 2020-05-28 株式会社クボタ 作業車

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