Method of stockpiling bulk material, in particular deads or washery refuse

The invention relates to a method for stockpiling of bulk materials, preferably of quarry faces or tailings, by means of a bulk transport vehicle, the structure consists of an open-topped box, which designed as a pivotable flap, rear end wall and a running longitudinally of the box shear plate with a having drive, which is supported in an attached to the box on the thrust plate side frames, said antransportierte bulk material is deposited during unloading of the vehicle, and the bulk material behind the moving bulk material transport vehicle by adjusting the driving speed on the Entladungsgeschwndigkeit the dozer blade in a particular position on top the stockpile is applied.

The invention relates to a prior art method in which the bulk material discharged by tilting and here preferably zunäcr.- an embankment is formed. In this case, irregularities arise on the heap surface which with a! Bulldozer must be balanced. This has the disadvantage firstly that no, but in any case results in insufficient compression of the bulk material in the heap in this process. Therefore, the capacity of the Hälden produced by such a process is insufficient.

The previously known method must be operated as a rule, such vehicles not only on work sites, len and Halden, but are also approved for use on public roads on which they transport the usually muddy bulk to stockpile. These vehicles are therefore generally considered Hinterbzw. designed as a way tipper. On the mound, the insufficiently compacted bulk surface provides these vehicles an uncertain footprint. When unloading also migrates the gravity of the load far upwards. This overturn the vehicles in the heap to often. These conditions together result in sharp satisfies the competent authorities, which relate in particular to the security and cleaning of streets.

From metalling of roads a bulk transport vehicle is known, the structure consists of an open-top box having an opening formed as a pivotable flap rear end wall and is designed as a rear tipper. there is a metering device, which the outlet of the bulk material out of the box-regulated in a tilted rearward box on the hinged flap. In such a vehicle, the risk of overturning of the vehicle is not turned off in the heap, because in this case also far migrates during discharge of gravity of the load according to the above (US-A-1705901).

Further, a bulk material transport vehicle having the assumed to be known by the features of the invention are known (US-A-3953170). Such bulk transport vehicles have the advantage that the center of gravity of the load is not vertically changed during discharge and that is why the vehicles are less at risk during unloading. Further, in such vehicles, the discharge rate depends on the velocity of the thrust plate and therefore no longer on the properties of the bulk material. Such bulk transport vehicles but were previously either not used for stockpiling of bulk materials or used only for carrying out the known method, which is explained at the outset.

The invention is based on the object that the initially assumed to be known methods to perform in a simple manner so that the capacity of the relevant stockpile increased and not passable bumps on the heap surface is avoided.

According to the invention this object is achieved in that the bulk material applied in a thin layer of 10 to 20 cm and thus created the solid surface is compacted by driving without the use of bulldozers.

In the novel process, the thickness of the bulk layer is determined by the discharge and traveling speed of the vehicle. The bulk layer can be applied at a thickness of 10 to 20 cm. This thickness allows the avoidance of the use of bulldozers. On the other hand, the bulk layer is so stable, that they can be driven on immediately. This is the basis according to the invention providing the possibility to optimally compact the bulk material and thereby increase the capacity of its stockpile accordingly.

The invention with reference to an embodiment is explained in greater detail implementation example, which relates to the vehicle used in the inventive process; In the drawings<ul><li>Figure 1 in side view, omitting all details not necessary for understanding the invention, a semi-trailer according to the invention,</li><li>Figure 2 is a plan view of the subject of Figure 2, with only the trailer part is drawn,</li><li>FIG. 3 is a broken view of the construction in cross-section and</li><li>Fig. 4 is a hydraulic circuit diagram.</li></ul>

In the caliper 1 of a three-axle tractor 2 be there is the semi-trailer 3 with a self-supporting body 4, which is 6 or 7 arranged at its rear end at 5 for receiving a double axle with single wheels 8 and 9 respectively. It is a box structure having parallel according to the plan view of FIG. 2, the longitudinal walls 10 and 11 and a flat bottom 12 on two parallel longitudinal members 13 and 14 and a plurality of transverse girders 15 having. The box thus forming a self-supporting structure. At its front end the box transmits a frame, generally designated by 16. This has a cross member 17, converging side portions 18 and 19 and parallel frame members 20 and 21, respectively, which are connected with the converging side parts 18 and 19 as well as the box itself. On the cross member 17 is a multi-cylinder piston assembly 23 is hinged on a horizontal joint 22nd

The end of the piston rod 24 of the assembly 23 is seated in turn on a horizontal pivot 25 in a thrust plate 26, which forms the front side of the box, the rear end wall is formed by a pivotable flap 28th

This flap 28 is mounted on the upper edge of the box 30 with its upper edge in two lateral joints 29 (FIG. 1). You can be just like the cylinder piston assembly 23 to pivot with a cylinder piston assembly 32 from its 1 shown in solid lines in Fig. Closed position to the open and dash-dot reproduced position. For this purpose the cylinder 33 is articulated to a horizontal joint 34, while the piston rod is articulated via a horizontal hinge 35 to the flap 28th In addition, the flap can be locked with a further hydraulic cylinder piston assembly 36th The locking cylinder 37 (FIG. 1) pivoted at 38 on the flap 28, while its piston rod 39 is hinged at 40 to a locking pin 41 which can engage in a corresponding recess 42 of an obliquely downward continuation 43 of the soil.

The thrust plate 26 consists of a particulate hollow sections rectangular frame 45, which is coated on both sides with a sheet 46 b btw. 47th An upper-bracket 44 serves as a storage tray, ie, as a defense, which is a Overflowing of the bulk material over the top - prevents (upper frame crossmember of the thrust plate 26). It is connected with a triangular cross-section further profile 45 'which forms a around the Scaubschild 26 frame-shaped peripheral damming strip, so that the thrust plate 26 may compress the charge on its face.

The thrust plate 26 has according to FIG. 3 below on both sides a made of a low friction plastic block 50. The Dlock sliding in a longitudinal guide 51, which is formed by a box-section, the bottom 52 is connected to the side plate 53 of the respective side wall 10 of the structure. A 51von inside obliquely outwardly extending from the upper side wall 54 of the box profile to the side wall 10 guide plate 56 is used to reject the bulk material and is cleaned off a correspondingly shaped plate 57 of the dozer blade 25th

The reproduced in Fig. 4 differential pressure circuit shows that the various cylinder piston assemblies are controlled so that the multi-cylinder piston assembly 23 the thrust plate 26 can not drive against the closed rear wall flap 25. Namely, when the pump is turned 60 over the two-way valve 61, a low spinning initially builds up in the line 63, which must increase in cash in accordance with the illustrated embodiment 25 before loaded on the switch and safety valve assembly 64, the annular piston surface of the piston-cylinder assembly 37 and the unlocking pin is pulled. With further increase in pressure to 60 bar, the flap is pivoted up then by the piston-cylinder assembly 32 associated with circuit 65 before it can be made to respond by pressure increase to 100 bar, which the multi-cylinder piston assembly associated with controller 66 and the thrust plate 26 starts to move.

In operation, the vehicle is through its upper opening 67 (Fig. 1) loaded in a conventional manner. The rear door 25 is closed and the pusher plate 26 is located in the 1 evident in FIG. Forward position. After loading of the vehicle of the transport is carried out. At the end of transport, reproduced in Fig. 4 hydraulic circuit is operated in accordance with the differential pressures described above, so that first solved the lock of the rear door 28, then the flap hochgechwenkt from her in Fig. 1 represented starting position in the dash-dot reproduced end position and finally the thrust plate 26 may be set 23 from left to right in the illustration of FIG. 1 in motion with the help of multi-cylinder piston assembly. Here, the charge is pushed out in the box 3 to the rear over the inclined surface 41st The vehicle is moving this forward to a according to the unloading and driving speed thin layer of 10 applied to 20 cm thickness.