Passively steerable module axle

A technology of modular shaft and steering shaft, applied in steering mechanism, steering rod, vehicle parts, etc., can solve the problem of increasing the total load and achieve the effect of avoiding additional weight

Inactive Publication Date: 2007-08-01
TEREX GLOBAL GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Of course, the control structure for controlling this additional axis via an emergency steering loop has been developed and implemented by Terex-Demag GmbH under the name "Failure Operating System", but this system not only has the required Advantages, but also disadvantages mentioned above, such as increase in overall load capacity
Furthermore, the electro-hydraulic interface connecting the additional axle to the chassis of the lift truck required for the active steering of the additional axle has always been a weak point and its disadvantage should be eliminated as much as possible

Method used

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  • Passively steerable module axle
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Embodiment Construction

[0041] As shown in the side view Fig. 1a and the top view Fig. 1b, the lifting vehicle of the present invention comprises a chassis 5, and the transmission mechanism of the chassis has 5 shafts 11, 12, 13, 14, 15, wherein only the first shaft 11, the second The shaft 12, the fourth shaft 14 and the fifth shaft 15 are steerable, while the shaft 13 is in the form of a rigid shaft. A rotatable superstructure 4 with a telescopic arm 3 , which is here telescopically retracted, is arranged on the chassis 5 of the lift truck 1 . The modular shaft 2 of the present invention is also detachably mounted on the rear of the chassis 4, and the shaft 16 of the modular shaft 2 here is also steerable. By mounting the module shaft 2 on the rear of the chassis 5, the unit formed together by the chassis 5 and the module shaft 2 can also be regarded as the chassis of the lift truck 1, in particular here the shaft 16 of the module shaft 2 is also suitable for steerable.

[0042] The steerable axl...

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Abstract

In conventional vehicle cranes it is usually necessary in consideration of current safety regulations to provide at least two separate steering circuits for all steered axles so that, in the event of a failure of one circuit, the vehicle crane can continue to be steered by way of the other. In order to avoid that in accordance with the invention at least one steered rear axle of a vehicle crane (1) is provided with a caster (alpha) so that at least one axle (11-16), in the event of a steering failure, remains steerable passively by utilising the caster friction. That principle is applied in a similar manner to a module axle (2) which can be mounted to the vehicle crane (1) and which can be required for transporting additional equipment or an additional counterweight which is possibly required.

Description

technical field [0001] The present invention mainly relates to a chassis mechanism of a mobile crane, in particular to a multi-axle lifting vehicle, which includes at least one active steering shaft that can also be passively steered. The invention further relates to a lift truck, the rear of the chassis of which is detachably mounted with an active steering module shaft, also passively steerable. In particular, the modular shaft is an additional shaft which can be fitted to the chassis of the crane and which is connected to and achieved by the steering circuit of the axle of the chassis during normal driving operation of the truck. In the case of failure of active steering, passive steering can still be performed by using the preset kingpin caster characteristics. technical background [0002] Lift trucks or mobile cranes of the type mentioned at the beginning of this description may also be driven on public roads, provided they comply with the relevant road traffic regula...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D7/14
CPCB62D7/144
Inventor 克劳斯·克尼格斯坦马勒·劳伦特克里斯汀·福尔梅斯特
Owner TEREX GLOBAL GMBH
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