DE19636649A1 - Telescopic swivel loader for load transport hoist and dump duties - Google Patents

Abstract

The hoist consists of telescoping elements (4,5) which can be raised and lowered by power cylinders (7,11) and swivelably mounted on a turntable (2), with all swivel and lifting functions controlled hydraulically from the drivers seat. The master and slave cylinders (11,12) are kept in parallel by a sensitive cylinder (13) which is used to tip the loading fork in its dump and receiving actions. The tipping angle is monitored by overload elements to prevent excessive load. When swivelled to the side, the rear part of the loader is locked down relative the front so force reaches the ground through the four rigidly interconnected wheels only. The overall effect is a smoothly adjusting loader system held under driver control throughout, by the power cylinders.

Description

It is known on construction sites for earthworks or for transporting pallets or son so-called wheel loaders in various sizes and designs use form. The lifting arm of this wheel loader is at the lower end for receiving Working tools such as earth shovels or forks for transporting e.g. B. Pallets set up tet, preferably using these work tools via quick-change devices be changed.

Wheel loaders of this type are also designed as swivel loaders. That is, the actual drawer Mechanism with lifting arm and work tools is mounted on a slewing ring and can be swiveled by approx. 90 ° to each side. Operation of the swivel device takes place from the control station at the driver's seat. With this swivel device it is possible Building material e.g. B. Tilt sand or mortar sideways or fill trenches. But it is not possible, e.g. B. swivel pallets sideways and set down.

This is where the invention comes in. We propose a wheel loader with all the possible uses, as shown above, however, the lifting arm is replaced by a telescopic arm has been. This telescopic arm is also equipped with a at its lower end Quick-change device for holding various tools, including a lifting fork to transport z. B. Pallets. The compl. Loading device is also on a slewing ring stored and can be swiveled approx. 90 ° to each side. In the swung out and auste Lescopied condition, it is now possible to put pallets sideways and the lifting fork through Retract the inner telescopic boom. This way you can both Set down pallets or similar structures as well as pick them up.

In Fig. I an embodiment of a telescopic swivel loader according to the invention is shown in normal working position, whereas Fig. II shows the same device in a side view.

On the front carriage " 1 " and the turntable " 2 " the loading frame " 3 " is pivoted. The telescopic loading arm " 4 " guides a telescopic boom " 5 " which is moved continuously in the longitudinal direction in the telescopic loading arm " 4 " by means of hydraulic cylinder " 6 ". The compl. Telescopic swing arm " 4 " is raised or lowered about the pivot point " 8 " by means of hydraulic cylinder " 7 ". Due to the combined movement of telescopic loading arm " 4 " and telescopic boom " 5 ", the lifting fork " 9 " is pulled away from under the offset pallet " 10 " or pushed under the same. This enables pallets or similar devices to be set down or picked up laterally.

Another cylinder " 11 " as a slave is connected to a cylinder " 12 " as a master cylinder and ensures the parallel guidance of the respective working tool in any position of the telescopic loading arm "4".

In a construction according to the invention, the tilting and tipping of the attachments (shovel, lifting fork or the like) is effected by a separately controlled tilting cylinder " 13 ", this allows sensitive direct control of this movement independently of the parallel guidance system (cylinders 11 , 12 ).

This prevents the loader from tipping over over its front or side tipping edges the force acting through the load by sensors becomes dependent on the swivel angle recorded and visualized in a debit advice.

Likewise, the swinging suspended rear axle is locked with pivoted ram " 3 " to ensure that force is introduced into the ground via four rigidly connected wheels.

Claims (5)

1. Telescopic swivel loader for transporting, lifting and lowering loads of any kind, characterized in that the lifting device consists of one or more telescopic elements, which are continuously shifted in the longitudinal direction, raised and lowered by means of cylinders and pivotally mounted on a slewing ring. 2. Telescopic swivel loader according to claim 1, characterized in that the operation all work functions including the telescopic and swivel function act hydraulically and is controlled from the driver's position. 3. Telescopic swivel loader according to claim 1 and 2, characterized in that the cylinder and in addition to the master-slave cylinder system to ensure parallel guidance another cylinder for the sensitive realization of tipping and tipping processes is applied. 4. Telescopic swivel loader according to claims 1-3, characterized in that the overlaid the lifting device by means of appropriately switched overload elements depending on the Swing angle of the lifting device is avoided. 5. Telescopic swivel loader according to claim 1-4, characterized in that the lateral Swiveling the lifting device, the oscillation of the rear loader part relative to the Front part, e.g. B. pendulum axis is locked so that the force transmission into the ground four rigidly connected wheels.