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Wheel loader

A technology of wheel loader and cylinder device, which is applied in the direction of earth mover/shovel, mechanically driven excavator/dredger, construction, etc. It can solve the problems of wear, high load of bolts and hinge points, high cost, etc.

Inactive Publication Date: 2004-07-07
LIEBHERR WERK BISCHOFSHOFEN GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus, a large tilting cylinder 9 is required, although it is not required when operating in other rotational positions, so that, in addition to unnecessarily high costs, this will also lead to unnecessarily high loads on some other bolts and hinge points, resulting in considerable wear and tear

Method used

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Embodiment Construction

[0029] Except the supporting hydraulic cylinder provided according to the present invention, as shown in Fig. 1-Fig. Figure 8 A crane frame with known z-direction motion is shown.

[0030] The rear end of the side bracket of the H-shaped auxiliary arm 1 has aligned bearing holes 20 by means of which the auxiliary arm is rotatably mounted to an axle end pivot pin at the front end of the truck. On the side opposite to the fork-shaped support cheek 6, on the transverse tube connecting the side brackets of the auxiliary arm 1 are welded retaining parts 21, which are spaced apart from each other and symmetrical to the transverse center plane of the auxiliary arm , the holding part has a U-shaped cutout on its side facing the front of the truck. The U-shaped cutout of the holding part 1 has a narrow leg 22 pointing towards the front of the truck and a wide leg 23 pointing towards the bucket, the wide leg of which has a cutout conforming to the shape of the cross tube 5 and is welde...

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PUM

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Abstract

The lifting frame with Z-kinematics of a wheel loader comprises an accessory arm with a lifting cylinder coupled to the vehicle frame or to the truck front-end and a rocker-type reversing lever coupled to the accessory arm, to the ends of which reversing lever the tipping cylinder and the connecting link are coupled for the swivelling of the attachment. Attachments, e.g. a bucket or a log loader, are mountable on the lifting frame. In order to be able, in a raised position of the lifting frame, to swivel the attachment with the necessary large moment from a position tipped downwards into a position tipped upwards, without any reinforcement of the tipping cylinder, there is coupled with the lifting frame, in the direction of the attachment in front of the articulated joint connecting the tipping cylinder to the vehicle frame, at least one hydraulic cylinder, whereof the piston rod engages in an articulated manner with the swivel axle connecting the reversing lever with the tipping cylinder.

Description

technical field [0001] The invention relates to a wheel loader with a lift frame for z-direction movement, which includes an auxiliary arm with a lifting cylinder attached to the vehicle frame or truck front end, and a rocker-like reversing lever attached to the auxiliary arm, flipping The cylinder is connected to the end of the connecting rod and the return rod to rotate the attachment, whereby attachments such as buckets or log loaders can be mounted on the hoist frame. Background technique [0002] Figure 8 This known wheel loader is shown in which the auxiliary arm 1 is designed in an H-shape, whereby the mutually parallel side brackets are connected at their inner ends to the front end of the truck via an articulated joint 2, which Usually attached to the rear of the truck by a folding hinged joint. The front ends of the side brackets are connected in an articulated manner to the attachment, in the embodiment shown, to the bucket 4 by means of an articulation joint 3 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02F3/34E02F3/42
CPCE02F3/308E02F3/3411E02F3/422
Inventor J·斯托克
Owner LIEBHERR WERK BISCHOFSHOFEN GMBH