WO1996007555A1 - Chariot de transport dote de roues en contact avec le sol et de roues auxiliaires couplees aux roues en contact avec le sol - Google Patents
Chariot de transport dote de roues en contact avec le sol et de roues auxiliaires couplees aux roues en contact avec le sol Download PDFInfo
- Publication number
- WO1996007555A1 WO1996007555A1 PCT/IB1995/000704 IB9500704W WO9607555A1 WO 1996007555 A1 WO1996007555 A1 WO 1996007555A1 IB 9500704 W IB9500704 W IB 9500704W WO 9607555 A1 WO9607555 A1 WO 9607555A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- floor
- wheel
- engaging
- trolley
- wheels
- Prior art date
Links
- 239000000725 suspension Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B33/00—Castors in general; Anti-clogging castors
- B60B33/0036—Castors in general; Anti-clogging castors characterised by type of wheels
- B60B33/0042—Double or twin wheels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B33/00—Castors in general; Anti-clogging castors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B33/00—Castors in general; Anti-clogging castors
- B60B33/0028—Construction of wheels; methods of assembling on axle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B5/00—Accessories or details specially adapted for hand carts
- B62B5/02—Accessories or details specially adapted for hand carts providing for travelling up or down a flight of stairs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B2200/00—Type of product being used or applied
- B60B2200/20—Furniture or medical appliances
- B60B2200/26—Medical appliances
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B33/00—Castors in general; Anti-clogging castors
- B60B33/0002—Castors in general; Anti-clogging castors assembling to the object, e.g. furniture
- B60B33/0015—Castors in general; Anti-clogging castors assembling to the object, e.g. furniture characterised by adaptations made to castor
- B60B33/0018—Castors in general; Anti-clogging castors assembling to the object, e.g. furniture characterised by adaptations made to castor in the form of a flat mounting plate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B33/00—Castors in general; Anti-clogging castors
- B60B33/0047—Castors in general; Anti-clogging castors characterised by details of the rolling axle
- B60B33/0049—Castors in general; Anti-clogging castors characterised by details of the rolling axle the rolling axle being horizontal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B33/00—Castors in general; Anti-clogging castors
- B60B33/0047—Castors in general; Anti-clogging castors characterised by details of the rolling axle
- B60B33/0057—Castors in general; Anti-clogging castors characterised by details of the rolling axle the rolling axle being offset from swivel axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B33/00—Castors in general; Anti-clogging castors
- B60B33/006—Castors in general; Anti-clogging castors characterised by details of the swivel mechanism
- B60B33/0065—Castors in general; Anti-clogging castors characterised by details of the swivel mechanism characterised by details of the swivel axis
- B60B33/0068—Castors in general; Anti-clogging castors characterised by details of the swivel mechanism characterised by details of the swivel axis the swivel axis being vertical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B33/00—Castors in general; Anti-clogging castors
- B60B33/006—Castors in general; Anti-clogging castors characterised by details of the swivel mechanism
- B60B33/0065—Castors in general; Anti-clogging castors characterised by details of the swivel mechanism characterised by details of the swivel axis
- B60B33/0073—Castors in general; Anti-clogging castors characterised by details of the swivel mechanism characterised by details of the swivel axis the swivel axis being symmetrical to wheel or wheels
Definitions
- Trolley comprising floor-engaging wheels and auxiliary wheels coupled to the floor-engaging wheels.
- the invention relates to a trolley intended to travel on a floor surface, comprising a number of floor-engaging wheels and at least one auxiliary wheel whose shaft occupies a fixed position relative to the shaft of at least one of the floor-engaging wheels and extends parallel thereto, the lower side of said auxiliary wheel being situated above the floor surface engaged by the floor-engaging wheels during travel.
- the invention also relates to an assembly of a floor-engaging wheel and an auxiliary wheel, which assembly is suitable for use in such a trolley.
- a trolley of this kind is known from United States Patent Specification No. 4,387,468.
- the trolley described therein is used for a mobile X-ray apparatus as used, for example in hospitals.
- This trolley consists of a base on which a rotatable column for an X-ray apparatus is mounted.
- the base comprises two legs whereto the floor-engaging wheels are secured, which wheels are mounted on shafts which extend perpendicularly to said legs.
- On the end of the legs there is mounted a bight, at the centre of which the auxiliary wheel is secured.
- the shaft of the auxiliary wheel extends parallel to the shaft of the floor-engaging wheel and mounting is such that some clearance exists between the lower side of the auxiliary wheel and the floor on which the trolley rests.
- the known trolley can more readily overcome small obstacles such as thresholds and the like on the floor on which the trolley travels.
- the distance between the auxiliary wheel and the floor-engaging wheels in a direction perpendicularly to the axial direction is of the order of magnitude of the diameter of a floor- engaging wheel or even larger. Consequently, comparatively narrow obstacles (i.e. obstacles whose dimension in the direction of travel is smaller than said diameter) still have the same overturning effect as in the absence of an auxiliary wheel.
- the trolley in accordance with the invention is characterized in that a line extending in the prolongation of the shaft of the auxiliary wheel intersects the associated floor-engaging wheel on or within the circumference of this wheel, and that the perpendicular projection of the circumference of the auxiliary wheel onto the floor-engaging wheel is situated partly outside the circumference of the floor-engaging wheel.
- a preferred embodiment of the trolley is characterized in that the assembly formed by the auxiliary wheel and the associated floor-engaging wheel comprises a second floor-engaging wheel whose shaft is situated in the prolongation of that of the former floor-engaging wheel, the auxiliary wheel being arranged between said two floor-engaging wheels.
- Fig. 1 shows a trolley for use as a mobile X-ray apparatus, comprising auxiliary wheels in accordance with the invention
- Fig. 2 is a more detailed representation of a floor-engaging wheel and an auxiliary wheel in accordance with the invention
- Fig. 3 shows an embodiment of the invention, consisting of an assembly of two floor-engaging wheels and one auxiliary wheel.
- Fig. 1 shows a trolley for use as a work station for a mobile X-ray apparatus, for example for use in a hospital.
- a number of short supporting arms 4 is connected to a base 12, a set of wheels 14 being secured to each supporting arm. These sets of wheels will be described in detail hereinafter with reference to the Figs. 2 and 3.
- On the base 2 there is arranged a cabinet 6 in which data processing equipment is accommodated.
- the trolley also comprises a keyboard 8 for operating the equipment and two monitors 10.
- Fig. 2 shows an assembly 14 consisting of a floor-engaging wheel 18 and an auxiliary wheel 20.
- the base 12 is provided with a number of such wheel sets 14, each of which consists of two floor-engaging wheels 18 wherebetween an auxiliary wheel 20 is arranged.
- the wheel sets .14 are rotatable relative to the base 12 about an axis 17.
- the auxiliary wheel 20 is mounted so that its lower side is situated at a small distance from the floor 22 on which the trolley travels.
- the floor-engaging wheel 18 is mounted on a holder 16 which is rotatable relative to the base 12 about an axis 17; this is realised in that one end of the holder 1 ⁇ is mounted in a bearing 24 provided in a housing 26.
- the housing 26 is connected to the base 12 by way of a mounting member 28.
- the floor-engaging wheel 18 is mounted on a supporting plate 25, forming part of the holder 16., so as to be rotatable about a shaft 30.
- An auxiliary supporting plate 31 is rigidly connected to the supporting plate 25, the auxiliary wheel 20 being mounted on said auxiliary supporting plate so as to be rotatable about a shaft 32.
- the shaft 32 occupies a fixed position relative to the shaft 30.
- the diameter of the floor-engaging wheel 18 amounts to 150 mm and that of the auxiliary wheel 20 to 60 mm.
- the weight distribution on the trolley is such that overturning upon a collision with a threshold-like obstruction is not precluded.
- the auxiliary wheel can be arranged in such a manner that its lower side is situated at a distance of 14 mm from the floor.
- the trolley collides with the threshold (34) first the auxiliary wheel contacts the threshold; the trolley is then lifted over a distance of 6 mm. Subsequently, the floor-engaging wheel contacts the threshold, the trolley then being lifted 14 mm. Because the diameter of the floor-engaging wheel in this example is substantially larger than that of the auxiliary wheel, the impact on the floor- engaging wheel is less than could be expected on the basis of the difference in height.
- Fig. 3 shows a preferred embodiment of the assembly of floor-engaging wheel and auxiliary wheel.
- the auxiliary wheel 20 is arranged between two floor- engaging wheels 18a and 18b.
- the wheel diameters and the difference in height are the same as in Fig. 2.
- the wheel suspension in this Figure is constructed as a holder 16 provided between the floor-engaging wheels 18a and 18b, it is alternatively possible to construct the wheel suspension in the form of a double plate, one plate portion being present on the outer side of each of the floor-engaging wheels. The horizontal cross-section of this holder is then U-shaped.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Abstract
Un chariot de transport laissé sans surveillance (par exemple destiné à porter une station de travail pour un appareil mobile de radiographie) qui heurte un obstacle (34) sur le sol tel qu'un seuil aura tendance à se renverser. Afin d'accroître la résistance au renversement, les roues (18) du chariot en contact avec le sol sont dotées de roues auxiliaires (20) situées à une petite distance au-dessus du sol. En cas de collision avec un seuil (34), la roue auxiliaire (20) passe d'abord le seuil si bien que le chariot est soulevé de cette première distance. Ensuite, la roue (18) en contact avec le sol passe le seuil, le chariot étant soulevé de la distance restante. L'impact vertical de la collision est donc réparti entre deux impulsions, ce qui réduit la tendance au renversement.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP94202567.7 | 1994-09-07 | ||
EP94202567 | 1994-09-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996007555A1 true WO1996007555A1 (fr) | 1996-03-14 |
Family
ID=8217172
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB1995/000704 WO1996007555A1 (fr) | 1994-09-07 | 1995-08-28 | Chariot de transport dote de roues en contact avec le sol et de roues auxiliaires couplees aux roues en contact avec le sol |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO1996007555A1 (fr) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6752224B2 (en) | 2002-02-28 | 2004-06-22 | Stryker Corporation | Wheeled carriage having a powered auxiliary wheel, auxiliary wheel overtravel, and an auxiliary wheel drive and control system |
US6772850B1 (en) | 2000-01-21 | 2004-08-10 | Stryker Corporation | Power assisted wheeled carriage |
US6902019B2 (en) | 1999-09-15 | 2005-06-07 | Hill-Rom Services, Inc. | Stretcher having a motorized wheel |
WO2005084965A1 (fr) * | 2004-03-09 | 2005-09-15 | Xuanzhuang Yang | Structure de support de roue |
WO2010120456A1 (fr) * | 2009-04-01 | 2010-10-21 | Intuitive Surgical Operations, Inc. | Roulette |
CN105946457A (zh) * | 2016-06-14 | 2016-09-21 | 广西大学 | 一种用螺纹副精确实现纵横向行走的万向底盘 |
US9707143B2 (en) | 2012-08-11 | 2017-07-18 | Hill-Rom Services, Inc. | Person support apparatus power drive system |
US10004651B2 (en) | 2012-09-18 | 2018-06-26 | Stryker Corporation | Patient support apparatus |
US10568792B2 (en) | 2015-10-28 | 2020-02-25 | Stryker Corporation | Systems and methods for facilitating movement of a patient transport apparatus |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE382382B (sv) * | 1973-12-28 | 1976-02-02 | B Larsson | Rullstolstillsats |
DE2947884A1 (de) * | 1979-11-28 | 1981-07-23 | Rudolf Wanzl Kg, 8874 Leipheim | Tragrolle mit bremsvorrichtung |
EP0051995A1 (fr) * | 1980-11-10 | 1982-05-19 | Wheel Developments Limited | Elément de ressort |
-
1995
- 1995-08-28 WO PCT/IB1995/000704 patent/WO1996007555A1/fr active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE382382B (sv) * | 1973-12-28 | 1976-02-02 | B Larsson | Rullstolstillsats |
DE2947884A1 (de) * | 1979-11-28 | 1981-07-23 | Rudolf Wanzl Kg, 8874 Leipheim | Tragrolle mit bremsvorrichtung |
EP0051995A1 (fr) * | 1980-11-10 | 1982-05-19 | Wheel Developments Limited | Elément de ressort |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7530412B2 (en) | 1999-09-15 | 2009-05-12 | Hill-Rom Services, Inc. | Method of making and using a patient support apparatus having a motorized drive assembly |
US6902019B2 (en) | 1999-09-15 | 2005-06-07 | Hill-Rom Services, Inc. | Stretcher having a motorized wheel |
US7011172B2 (en) | 1999-09-15 | 2006-03-14 | Hill-Rom Services | Patient support apparatus having a motorized wheel |
US6772850B1 (en) | 2000-01-21 | 2004-08-10 | Stryker Corporation | Power assisted wheeled carriage |
US7007765B2 (en) | 2000-01-21 | 2006-03-07 | Stryker Corporation | Method for driving a wheeled carriage |
US6752224B2 (en) | 2002-02-28 | 2004-06-22 | Stryker Corporation | Wheeled carriage having a powered auxiliary wheel, auxiliary wheel overtravel, and an auxiliary wheel drive and control system |
WO2005084965A1 (fr) * | 2004-03-09 | 2005-09-15 | Xuanzhuang Yang | Structure de support de roue |
WO2010120456A1 (fr) * | 2009-04-01 | 2010-10-21 | Intuitive Surgical Operations, Inc. | Roulette |
US9707143B2 (en) | 2012-08-11 | 2017-07-18 | Hill-Rom Services, Inc. | Person support apparatus power drive system |
US10588803B2 (en) | 2012-08-11 | 2020-03-17 | Hill-Rom Services, Inc. | Person support apparatus power drive system |
US10004651B2 (en) | 2012-09-18 | 2018-06-26 | Stryker Corporation | Patient support apparatus |
US10568792B2 (en) | 2015-10-28 | 2020-02-25 | Stryker Corporation | Systems and methods for facilitating movement of a patient transport apparatus |
US10905612B2 (en) | 2015-10-28 | 2021-02-02 | Stryker Corporation | Systems and methods for facilitating movement of a patient transport apparatus |
CN105946457A (zh) * | 2016-06-14 | 2016-09-21 | 广西大学 | 一种用螺纹副精确实现纵横向行走的万向底盘 |
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