GB2304653A - High lift tipping trailer - Google Patents

Abstract

A high lift tipping trailer with multi purpose use having a body with removable drop down sides, removable rear tail-gate with integral chute and removable rear corner posts comprises a sub-chassis with a solid beam axle fitted to the front end hinged at the rear to a rigid chassis to be moved down in an arc by hydraulic rams lifting the rear end of the trailer. In the lifted position the hydraulic flow to the rams is locked off by a diverter valves positioned at the front of the trailer for safety. Before the diverter valve is locked off the hydraulic system will only operate the tail lift rams, when the diverter valve is locked off the hydraulic system will operate the tipping ram and a chute door ram. The diverter valve allows tipping the trailer from the transport vehicle or switches over to operate the tipping ram and/or chute door ram from two monoblock valves at the rear nearside of the trailer for one man operation. The tail-gate and chute with rams attached can be removed together with the rear corner posts, the hydraulic pipes to the chute door rams are fitted with quick release couplings at the monoblock valve for easy removal.

Description

HIGH LIFT TIPPING TRAILER with multi purpose use This invention relates to a high lift tipping trailer with multi purpose use (hereinafter called high lift tipping trailer).

Tipping trailers are well known and widely used in agriculture, ground work maintenance, golf courses and sports grounds and comprise a wheeled chassis and hinged body with tipping mechanism some of which incorporate a scissor action in the form of a second chassis which are relatively expensive.

According to the present invention there is provided a high lift tipping trailer comprising a standard tipping trailer with a unique hydraulically operated rear axle which moves the axle down in an arc lifting the complete rear of the trailer to the desired height, means for locking off enabling the trailer to be hydraulically tipped in the normal way and the load discharged into a hopper or spreading machine such as fertiliser spreader, top dressing spreader and spreading and grading machines, all types of material, wet or dry, can be transported for transfer to a machine where a normal tipping trailer would not have sufficient discharge height, means for controlling the flow and amount of material being discharged, the rear double height tail gate being adapted to provide a chute with a hydraulically operated guillotine action door, means for operating the tipping and chute door are provided at the rear near-side of the trailer by two monoblock valves allowing the operator unrestricted view of the discharge material. The chute is provided with adjustment by means of hinge action and restraining chains. Multi purpose use is provided to convert the high lift tipping trailer to a standard tipping trailer by removing the double height tail-gate with integral chute and rear corner posts replacing the same with standard tail-gate and corner posts (supplied with the high lift tipping trailer) and with the high lift and chute door hydraulic mechanism locked off can be tipped from the transport vehicle in the normal way for standard tipping trailers.Multi purpose use is further provided to convert the high lift tipping trailer to a flat bed trailer by removing the tail-gate, corner posts and drop down sides locking off the hydraulic mechanism the high lift tipping trailer can be used as a flat bed trailer.

A specific embodiment of the invention will now be described by way of example with reference to the accompanying drawings in which: Plan View Shows Chassis and Trailer Body Side Elevation Shows the trailer in position on the chassis.

Figure 2 Illustrates the trailer in use as a standard tipping trailer with body fully extended which is operated from the towing vehicle hydraulically, operated through a hydraulic diverter block (No2) note height (Fig 2 A) which ls standard trailer tipping height.

Figure 3 Shows trailer body in closed position with rear tail hydraulic lift extended when diverter lever (No2) is closed the rear tail hydraulic lift is locked off. Note extended tipping height (Fig 3 "A+B") which can be varied to meet customer specification and intended use.

Figure 4 Shows rear tail hydraulic lift fully extended and locked off also trailer body fully tipped hydraulically.

Note safety feature the trailer body cannot be tipped until the rear tail lift hydraulic system in locked off by closing diverter lever (No2). The trailer body then is hydraulically lifted by operating one lever of a two way monoblock valve at the rear nearside of the trailer (Nol).

The guillotine chute gate opening is then operated hydraulically by two rams from the other lever of the monoblock valve at the nearside rear of the trailer (Nol) and the chute spout height can be adjusted manually on a hinged mechanism and restraining chains.

All reference numbers are shown in drawings Plan View and Side Elevation.

Claims (14)

1. A high lift tipping trailer comprising a wheeled chassis, drop sides trailer body and rear discharge chute. The wheeled chassis being adapted to lift the rear of the trailer by a unique hinged sub chassis with full beam axle attached forced down in an ark by hydraulic rams thereby lifting the rear of the trailer which is then locked off by means of a diverter valve ensuring safety and enabling the other hydraulic feature of the trailer to be operated.

2. A high lift tipping trailer as claimed in Claim 1 wherein hydraulic mechanisms are provided to enable one man operation of the several features of the trailer.

3. A high lift tipping trailer as claimed in Claim 1 and Claim 2 wherein rear high lift means is provided by a sub-chassis hinged at the rear end to the main chassis and full beam axle at the front end of the sub-chassis linked to the main chassis by hydraulic rams which extend to push the sub-chassis and axle down in an ark lifting the trailer rear to the required height then locked off by means of a diverter valve located at the front of the trailer making the trailer safe enabling the tipping of the body and operation of the discharge chute gate.

4. A high lift tipping trailer as claimed in Claim 2 and Claim 3 wherein tipping means is provided by a monoblock valve at the rear nearside of the trailer to allow one man to operate tipping the trailer body with unobstructed view of the material being discharged and tipped to the required height.

5. A high lift tipping trailer as claimed in Claim 2, Claim 3 and Claim 4 wherein the discharge means is provided by a chute with hydraulically operated guillotine action door.

6. A high lift tipping trailer as claimed in Claim 5 whereby the chute means is provided with hinged adjustment arrested with restraining chains to regulate chute height and angle.

7. A high lift tipping trailer as claimed in Claim 5 wherein discharge of the load via the chute is controlled by hydraulic ram operated guillotine action door from a second monoblock valve at the nearside rear of the trailer.

8. A high lift tipping trailer as claimed in Claim 1 and Claim 2 wherein means are provided for use as a standard tipping trailer operated from the towing vehicle

9. A high lift tipping trailer as claimed in Claim 8 wherein means are provided at the front of the trailer for cutting off the hydraulic system to the high lift and chute discharge mechanism by a diverter valve.

10. A high lift tipping trailer as claimed in Claim 8 and Claim 9 is provided with a standard tail-gate and standard rear corner posts.

11. A high lift tipping trailer as claimed in Claim 8 and Claim 9 and Claim 10 wherein tipping means is provided to operate tipping only of the body from the transport vehicle.

12. A high lift tipping trailer as claimed in Claim 1 and Claim 2 wherein means is provided for use as a flat bed trailer.

13. A high lift tipping trailer as claimed in Claim 12 where in means is provided for removing tail-gate, drop sides and corner posts.

14. A high lift tipping trailer substantially as described herein with reference to Plan View, Side Elevation Figures 2, 3, & 4 of the accompanying drawings.

Amended claims have been filed as followed CLAIMS 1. A high lift tipping trailer comprising a wheeled chassis (3) drop sided trailer body and rear discharge chute(6), the wheeled chassis being adapted to lift the rear of the trailer by a unique hinged sub chassis (5) having a centre point or pivot at the rear of the chassis restrained by a single pin to the rear of the sub chassis (5) without the use of any linkage system and a full beam axle (8) fixed to the front end of the sub chassis (5) and forced down in an ark by means of 2 hydraulically operated rams (9) thereby lifting the rear of the trailer (Fig 3) which is then locked off by means of a diverter valve (2) ensuring safety and diverting the hydraulic fluid flow to a monoblock valve (1) at the rear nearside ofthe trailer enabling the other hydraulic features of the trailer to be operated in sequence means are provided for tipping the trailer to the required height (Fig 4) by operating 1 of 2 levers on the said monoblock valve (1) which operates the tipping ram (7) followed by discharging the load through the discharge chute the flow being controlled by means of the 2nd lever on the said monoblock valve (1) which operate 2 rams (4) controlling the guillotine action chute door whereby hydraulic mechanisms are provided to enable one man operation of the several features of the trailer by means of the aforesaid diverter valve (2) the rear of the trailer is lifted and the diverter valve is switched over to lock off the hydraulic fluid flow to the rams (9) operating the sub chassis (5) at the same time diverting the hydraulic fluid flow to the said monoblock valve (1) enabling one man to operate the tipping of the trailer body (6) and the discharge of the load through the said discharge chute by means of the said monoblock valve (1) levers as aforesaid with full view of the discharging load and closing the guillotine action chute door at any time during the discharging of the load also tipping the trailer further to ensure discharge of all the load, means are provided to use the high lift tipping trailer as a standard or normal tipping trailer or as a flat bed trailer (multi purpose use) the standard tipping trailer (Fig 2) is formed by removing the triangular extension sides secured with bolts and nuts along the bottom and rear upright post drop the rear locking bar disconnect the said monoblock valve (1) hydraulic pipes by means of the quick release hydraulic couplings remove the R clip and detach the said monoblock valve (1) attach to a carrier on the tail-gate and secure with the said R pin drop trailer sides and remove tail-gate complete with the corner posts, insert standard height corner posts raise drop sides and fit standard height tailgate by locking tail-gate lugs into tail-gate forklettes and secure with nut and bolt engage locking bar in retainer turn the said diverter valve (2) to far right the trailer can now be used as a standard tipping trailer operated from the towing vehicle means is provided to use the high lift tipping trailer as a flat bed trailer by removing the drop down sides the tail-gate and rear corner posts disconnect the hydraulic flow and return pipes from the towing vehicle the trailer can now be used as a standard flat bed trailer without tipping action