WO1999014076A1 - A raisable/lowerable vehicle bed carrying loads - Google Patents
A raisable/lowerable vehicle bed carrying loads Download PDFInfo
- Publication number
- WO1999014076A1 WO1999014076A1 PCT/AU1998/000766 AU9800766W WO9914076A1 WO 1999014076 A1 WO1999014076 A1 WO 1999014076A1 AU 9800766 W AU9800766 W AU 9800766W WO 9914076 A1 WO9914076 A1 WO 9914076A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- load receiving
- receiving bed
- bed
- chassis
- tailgate
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
- B60P1/02—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with parallel up-and-down movement of load supporting or containing element
- B60P1/025—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with parallel up-and-down movement of load supporting or containing element with a loading platform inside the wheels of a same axle and being lowerable below the axle
Definitions
- the present invention relates to vehicles including motor vehicles and towed vehicles in which the vehicle is provided with a load receiving tray or bed which is movable from a raised transport position to a lowered position at which the bed is located adjacent ground level to facilitate loading and unloading.
- USA Patent 5035462 describes a motor vehicle having a chassis provided with a cab, and a rear assembly including a vertically movable load receiving bed which is movable between an upper transport position, and a lower position located substantially at ground level. Inventive improvements on this vehicle are described in International Applications PCT/AU96/00255 and PCT/AU97/00523. In these vehicles mechanical linkage systems are employed to raise and lower the load receiving bed.
- a further disadvantage of the above mentioned vehicles are the reasonably complex means of securing the load receiving bed in the transport position.
- a vehicle assembly including: a chassis of generally "U" shaped configuration so as to provide a generally horizontal transverse base from which there rearwardly extends a pair of legs; a wheel assembly supporting each leg; a load receiving bed supported between the legs and movable between a raised transport position and a lowered position adjacent a surface upon which the vehicle is resting; a pair of forward hydraulic cylinders spaced on opposite sides of the load receiving bed and operatively extending between the chassis and the load receiving bed; a pair of rearward hydraulic cylinders located on opposite sides of the load receiving bed and operatively extending between rear portions of the legs and the load receiving bed; hydraulic means to deliver hydraulic fluid under pressure to the hydraulic rams to raise and lower the load receiving bed between its raised transport position and its lowered position; forward catch means to engage said load receiving bed to aid in supporting said load receiving bed in said transport position but releasable to permit movement of the load receiving bed; and a tailgate pivotally attached to a rear portion of said load receiving bed and movable
- Figure 1 is a schematic side elevation of the chassis of a vehicle
- FIG. 2 is a further schematic side elevation of the chassis of Figure 1 ;
- FIG 3 is a schematic end elevation of the chassis of Figure 1 ;
- Figure 4 is a schematic enlarged view of a portion of the chassis of Figure 1 ;
- FIG. 5 is a schematic hydraulic circuit employed with the chassis of Figure
- the chassis 12 may be attached to a motorised cabin or towed.
- the chassis 12 is intended to be attached to a motorised cabin.
- the chassis 12 is of a "U" shaped configuration so as to provide a generally horizontal transverse base 11 from which there rearwardly extends a pair of generally parallel coextensive legs 13. Supported between the legs is a load receiving bed 14 which is movable between a raised transport position and a lowered position facilitating loading and unloading.
- Supporting the bed 14 are four hydraulic cylinders 15 to 18, with the forward pair of cylinders 15 and 16 being located at forward portions of the chassis 12 but on opposite sides of the chassis, while the rear pair of cylinders 17 and 18 are secured to rear portions of the legs 13 and are also located on opposite sides of the bed 14.
- Pivotally supported at the rear of the bed 14 is a tailgate 10.
- a hydraulic pump 20 is used to deliver hydraulic fluid to the cylinders 15 to 18 to raise the bed 14, with coordination of the cylinders 15 to 18 being controlled by a valve assembly 21.
- the valve assembly 21 connects the pump 20 to the hydraulic cylinders 15 to
- the valve assembly 21 includes a pair of spool valves 23 and 24, with the valve 23 being arranged to operate a tailgate 10 pivotally attached to a rear portion 44 of the bed 14, while the valve 24 operates the cylinders 15 to 18.
- the cylinders 15 to 18 are connected in series and are configured so that the bed 14 is maintained generally horizontal during raising and lowering. This is achieved by having the non-rod end of cylinder 15 connected to the rod end of the cylinder 16, the non-rod end of cylinder 16 is connected to the rod end of the cylinder 17, and the non-rod end of cylinder 17 is connected to the rod end of the cylinder 18.
- the cylinder 15 has an internal diameter of 1.75 inches
- the cylinder 16 has an internal diameter of 2 inches
- the cylinder 17 an internal diameter of 2.25 inches
- the cylinder 18 a diameter of 2.50 inches.
- the swept volume of the rod side of one piston is equal to the swept volume of the non-rod side of the piston of the next adjacent cylinder. This ensures uniform movement of the piston rods.
- the cylinders 15 to 18 can be arranged in any serial order providing the swept volumes are arranged to match.
- the cylinder 15 has an internal diameter of 2 inches
- the cylinder 16 has an internal diameter of 2.25 inches
- the cylinder 17 has an internal diameter of 2.5 inches
- the cylinder 18 has an internal diameter of 2.75 inches.
- the valve 24 receives hydraulic fluid under pressure from the pump 20 via a one-way valve 26.
- the valve 26 delivers the hydraulic fluid to hydraulic line 27.
- Hydraulic fluid under pressure is therefore delivered to the hydraulic line 28 which via a one-way valve 29 and flow restriction device 30 is connected to a hydraulic line 31.
- Hydraulic fluid under pressure delivered to the line 28 flows to the line 31 via the valve 29 rather than the flow restriction device 30.
- the line 31 is connected to the rod side of the cylinder 15. This will result in the bed 14 rising. Hydraulic fluid under pressure would then flow from the non-rod side of the cylinder 15 to the rod side of the cylinder 16.
- hydraulic fluid under pressure would flow from the non-rod side of the cylinder 16 to the rod side of the cylinder 17.
- hydraulic fluid from the non-rod side of the cylinder 17 would flow to the rod side of the cylinder 18.
- Hydraulic fluid from the non-rod side of the cylinder 18 would be delivered to the hydraulic line 32.
- the line 32 extends to the valve 24 and would enable delivery of the hydraulic fluid (via line 33) to a tank.
- the line 33 is also provided with a relief valve 34 connected to the line 33. Simultaneously the hydraulic fluid is delivered under pressure to the valve 23 wherefrom it flows to hydraulic line 35.
- the hydraulic line 35 The hydraulic line 35
- a return hydraulic line 37 extends from the tailgate cylinder 46 to the valve 23 wherefrom the hydraulic fluid flows to the line 33 and then to a tank.
- a relief valve 38 is provided and connects the high pressure side of the pump to tank. ⁇ o
- the valves 23 and 24 are activated so that the pump 20 is directly connected to the lines 37 and 32.
- the tailgate cylinder 25 pivots the tailgate 10 to its lowered position extending generally rearwardly from the bed 14. To release the tailgate 10, hydraulic fluid under pressure is delivered to the line 32 and therefor the rod end of the cylinder 15. The hydraulic connections between
- the solenoid or linear actuator operating the front catch 54 is activated allowing the front catch 54 to disengage and the tailgate 10 due to the weight of the bed 14 being lifted off the catch 54 at the front and the support members 50 employed to keep the tailgate 10 closed.
- a microswitch operating the front catch 54 is activated allowing the front catch 54 to disengage and the tailgate 10 due to the weight of the bed 14 being lifted off the catch 54 at the front and the support members 50 employed to keep the tailgate 10 closed.
- a microswitch As the front catch 54 becomes fully disengaged a microswitch
- This hydraulic fluid must pass through the flow restrictor 30 which therefore governs the speed at which the bed is lowered and controls overrun of the cylinders 15 to 18 in downward motion caused by more oil flowing out of the cylinders 15 to 18 than is being forced in.
- the pressure relief valve 34 is set at approximately 200 to 500 (preferably
- PSI 200) PSI to limit the amount of downward force exerted on the bed 14 should it fowl on an obstacle
- the relief valve 38 is set at approximately 2500 PSI to protect the hydraulic circuit and limit the amount of load that can be lifted.
- Each arm 13 includes a sub-frame 39 to which the cylindrical body 40 of each
- the piston rod 42 of each cylinder 15 to 18 is attached to the load receiving bed 14.
- the load receiving bed has four transversely extending projections 43 to which the piston rods 42 are attached.
- the tailgate 10 in combination with the catch assembly 43 aids in retaining the bed 14 secured to the chassis 12.
- the tailgate 10 is pivotally attached to a rear portion 44 of the bed 14 by means of a pivot assembly 45.
- the tailgate 10 has a rearward facing surface 47 and an inner surface 48 which faces the interior of the chassis 12.
- Each transverse edge portion of the tailgate 10 is provided with a support assembly 49 which engages a support member 50 fixed to each of the arms 13.
- the support assembly 49 includes a socket 51 mounted internally of the tailgate 10 from which there projects a support block 52.
- the support block 52 threadably engages a support shaft 53 which is adjustable and engages the support member 50. When the tailgate 10 is in the raised position the support shaft 52 is engaged with the block 51.
- the catch assembly 54 engages a pin 55 projecting forwardly from the bed 14.
- the catch 54 includes a pivoted catch member having a hook which passes about the pin 55. This arrangement is described in detail both in construction and operation in the above mentioned PCT applications. A solenoid or linear actuator would be used to pivot the catch member to release the pin 55.
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
- Vehicle Body Suspensions (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
- Body Structure For Vehicles (AREA)
- Automobile Manufacture Line, Endless Track Vehicle, Trailer (AREA)
- Tires In General (AREA)
- Electroplating And Plating Baths Therefor (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
Description
Claims
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98942393A EP1012001A4 (en) | 1997-09-16 | 1998-09-16 | A raisable/lowerable vehicle bed carrying loads |
JP2000511656A JP2001516667A (en) | 1997-09-16 | 1998-09-16 | Vertically movable luggage carrier |
NZ503328A NZ503328A (en) | 1997-09-16 | 1998-09-16 | A raisable/lowerable vehicle bed carrying loads |
US09/486,883 US6568897B2 (en) | 1997-09-16 | 1998-09-16 | Raisable/lowerable vehicle bed carrying loads |
AU90559/98A AU745330B2 (en) | 1997-09-16 | 1998-09-16 | A raisable/lowerable vehicle bed carrying loads |
BR9812086-7A BR9812086A (en) | 1997-09-16 | 1998-09-16 | "vehicle platform that can be raised / lowered while carrying loads" |
HU0003683A HU223607B1 (en) | 1997-09-16 | 1998-09-16 | A raisable/lowerable vehicle bed carrying loads |
CA002302558A CA2302558A1 (en) | 1997-09-16 | 1998-09-16 | A raisable/lowerable vehicle bed carrying loads |
PL98342290A PL342290A1 (en) | 1997-09-16 | 1998-09-16 | Liftable/sinkable cargo-carrying bed for freightage vehicles |
NO20001347A NO320669B1 (en) | 1997-09-16 | 2000-03-15 | Kjoretoysammenstilling |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPO9245A AUPO924597A0 (en) | 1997-09-16 | 1997-09-16 | A vehicle |
AUPO9245 | 1997-09-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999014076A1 true WO1999014076A1 (en) | 1999-03-25 |
Family
ID=3803528
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AU1998/000766 WO1999014076A1 (en) | 1997-09-16 | 1998-09-16 | A raisable/lowerable vehicle bed carrying loads |
Country Status (11)
Country | Link |
---|---|
US (1) | US6568897B2 (en) |
EP (1) | EP1012001A4 (en) |
JP (1) | JP2001516667A (en) |
AU (1) | AUPO924597A0 (en) |
BR (1) | BR9812086A (en) |
CA (1) | CA2302558A1 (en) |
HU (1) | HU223607B1 (en) |
NO (1) | NO320669B1 (en) |
NZ (1) | NZ503328A (en) |
PL (1) | PL342290A1 (en) |
WO (1) | WO1999014076A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000056572A1 (en) * | 1999-03-22 | 2000-09-28 | Razorback Vehicles Corporation Limited | A raisable/lowerable vehicle bed and rear door |
WO2001026927A1 (en) * | 1999-10-11 | 2001-04-19 | Razorback Vehicles Corporation Limited | A rigid raisable/lowerable vehicle bed carrying loads |
US7854437B2 (en) | 2003-04-11 | 2010-12-21 | Jeffrey Duncan Watters | Vehicle conversion assembly and method of converting a vehicle |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050058528A1 (en) * | 2002-05-01 | 2005-03-17 | Wroblewski Ronald Paul | Elevator delivery system for use in truck body or trailer |
US7563065B1 (en) | 2006-02-27 | 2009-07-21 | Bennett Ervon Ray | Storage container delivery apparatus and method |
US7322627B1 (en) * | 2006-03-24 | 2008-01-29 | Clinton Jay Nicholson | Vertically adjustable truck bed |
US8920145B2 (en) | 2010-11-29 | 2014-12-30 | Gta Innovation, Llc | Synchronized hydraulic power module |
US20150013084A1 (en) * | 2013-07-15 | 2015-01-15 | Roy Burrow | Unloading and loading device |
CN113928424B (en) * | 2021-09-30 | 2022-11-11 | 中铁十六局集团第五工程有限公司 | Automatic conveying device for railway bridge and culvert construction materials |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995000419A1 (en) * | 1993-06-24 | 1995-01-05 | Dial-A-Box Pty. Ltd. | A container and a vehicle and container system |
GB2299791A (en) * | 1995-02-23 | 1996-10-16 | U K Lift Company Limited The | Movable vehicle deck with means to keep deck level during movement |
WO1996034778A1 (en) * | 1995-05-01 | 1996-11-07 | Razorback Vehicles Management Pty. Ltd. | A vehicle |
US5630693A (en) * | 1994-03-22 | 1997-05-20 | Workman Industries Pty Limited | Vehicle |
WO1998007591A1 (en) * | 1996-08-16 | 1998-02-26 | Razorback Vehicles Corporation Pty. Ltd. | A raisable/lowerable vehicle bed for carrying loads |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4171927A (en) * | 1978-02-13 | 1979-10-23 | Aoyama Kenneth M | Loading and transport vehicle |
US5906419A (en) * | 1995-12-07 | 1999-05-25 | Tooling Technology Centre, Inc. | Wheel mounting assembly for installing a transmission-based anti-lock braking system sensor thereon |
-
1997
- 1997-09-16 AU AUPO9245A patent/AUPO924597A0/en not_active Abandoned
-
1998
- 1998-09-16 US US09/486,883 patent/US6568897B2/en not_active Expired - Fee Related
- 1998-09-16 PL PL98342290A patent/PL342290A1/en unknown
- 1998-09-16 CA CA002302558A patent/CA2302558A1/en not_active Abandoned
- 1998-09-16 JP JP2000511656A patent/JP2001516667A/en active Pending
- 1998-09-16 HU HU0003683A patent/HU223607B1/en not_active IP Right Cessation
- 1998-09-16 BR BR9812086-7A patent/BR9812086A/en not_active IP Right Cessation
- 1998-09-16 EP EP98942393A patent/EP1012001A4/en not_active Withdrawn
- 1998-09-16 NZ NZ503328A patent/NZ503328A/en unknown
- 1998-09-16 WO PCT/AU1998/000766 patent/WO1999014076A1/en not_active Application Discontinuation
-
2000
- 2000-03-15 NO NO20001347A patent/NO320669B1/en unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1995000419A1 (en) * | 1993-06-24 | 1995-01-05 | Dial-A-Box Pty. Ltd. | A container and a vehicle and container system |
US5630693A (en) * | 1994-03-22 | 1997-05-20 | Workman Industries Pty Limited | Vehicle |
GB2299791A (en) * | 1995-02-23 | 1996-10-16 | U K Lift Company Limited The | Movable vehicle deck with means to keep deck level during movement |
WO1996034778A1 (en) * | 1995-05-01 | 1996-11-07 | Razorback Vehicles Management Pty. Ltd. | A vehicle |
WO1998007591A1 (en) * | 1996-08-16 | 1998-02-26 | Razorback Vehicles Corporation Pty. Ltd. | A raisable/lowerable vehicle bed for carrying loads |
Non-Patent Citations (1)
Title |
---|
See also references of EP1012001A4 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000056572A1 (en) * | 1999-03-22 | 2000-09-28 | Razorback Vehicles Corporation Limited | A raisable/lowerable vehicle bed and rear door |
WO2001026927A1 (en) * | 1999-10-11 | 2001-04-19 | Razorback Vehicles Corporation Limited | A rigid raisable/lowerable vehicle bed carrying loads |
US7854437B2 (en) | 2003-04-11 | 2010-12-21 | Jeffrey Duncan Watters | Vehicle conversion assembly and method of converting a vehicle |
Also Published As
Publication number | Publication date |
---|---|
HUP0003683A2 (en) | 2001-02-28 |
EP1012001A1 (en) | 2000-06-28 |
NO20001347L (en) | 2000-03-15 |
US20010043851A1 (en) | 2001-11-22 |
HUP0003683A3 (en) | 2002-03-28 |
PL342290A1 (en) | 2001-06-04 |
US6568897B2 (en) | 2003-05-27 |
EP1012001A4 (en) | 2000-12-06 |
NO320669B1 (en) | 2006-01-16 |
CA2302558A1 (en) | 1999-03-25 |
HU223607B1 (en) | 2004-10-28 |
NO20001347D0 (en) | 2000-03-15 |
NZ503328A (en) | 2002-11-26 |
AUPO924597A0 (en) | 1997-10-09 |
JP2001516667A (en) | 2001-10-02 |
BR9812086A (en) | 2000-09-26 |
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