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Hydraulic steering

A steering device and hydraulic technology, which is applied to steering mechanisms, fluid steering mechanisms, power steering mechanisms, etc., and can solve problems such as increasing the size of hydraulic steering devices

Active Publication Date: 2017-03-08
丹佛斯动力系统有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as two separate units, the resulting combined hydraulic steering unit and pilot valve still have nearly the same overall dimensions
Furthermore, these two units need to be connected directly to a larger control valve which further increases the size of the hydraulic steering unit
Therefore, this technical solution is only suitable for some applications, namely in forklift trucks, where a longer steering column and larger hydraulic steering are not a problem

Method used

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Examples

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Embodiment Construction

[0024] exist figure 1 In , a hydraulic steering device 1 according to the present invention is shown in a hydraulic circuit diagram. The hydraulic steering device 1 includes a hydraulic steering unit 2 and a pilot valve 3 .

[0025] The hydraulic steering device 1 is supplied with pressurized hydraulic fluid via a hydraulic supply port P. As shown in FIG. Hydraulic fluid flows from the hydraulic supply port P to the pilot valve 3 . The pilot valve 3 is preferably a proportional three-way valve. The first pilot outlet 4 connects the pilot valve 3 to the hydraulic steering unit 2 via the check valve 5 . The second pilot outlet 6 leads from the pilot valve 3 to the excess flow port EF. The excess flow port EF can be connected to an implement external to the hydraulic steering device 1 .

[0026] At one end of the valve element stroke or spool stroke, the pilot valve 3 supplies hydraulic fluid from the hydraulic supply port P to the hydraulic steering unit 2 and the excess fl...

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Abstract

The invention relates to a hydraulic steering (1) comprising a hydraulic steering unit (2) and a priority valve (3). The hydraulic steering unit (2) and the priority valve (3) are arranged in a common housing (9). The hydraulic steering (1) comprises a hydraulic pressure supply port (P), a low pressure port (T), two steering connection ports (L, R) and an excess flow port (EF) to supply an external implement. The priority valve (3) distributes hydraulic fluid from the hydraulic pressure supply port (P) between the hydraulic steering unit (2) and the excess flow port (EF). The task of the invention is to provide a more compact hydraulic steering. To this end the hydraulic pressure supply port (P), the low pressure port (T) and the two steering connection ports (L, R) all enter on the same side of the housing (9), and the priority valve (3) is arranged adjacent to the four ports hydraulic pressure supply port (P), the low pressure port (T) and the two steering connection ports (L, R) with two of the four ports (P, T, L, R) on either side of the priority valve (3).

Description

technical field [0001] The present invention relates to a hydraulic steering device comprising a hydraulic steering unit and a pilot valve, wherein the hydraulic steering unit and the pilot valve are arranged in a common housing, and wherein the hydraulic steering device comprises a hydraulic supply port, a low pressure port, two steering The connection port and the excess flow port that supplies the external implement, and wherein the pilot valve distributes hydraulic fluid from the hydraulic supply port between the hydraulic steering unit and the excess flow port. Background technique [0002] Hydraulic steering devices are used, for example, in heavy vehicles which are steered by means of a steering wheel connected to a hydraulic steering unit which converts the turning of the steering wheel into distribution of hydraulic fluid between two steering connection ports. In many cases, however, implements such as forklift or forklift arms also need to be supplied with hydrauli...

Claims

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Application Information

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IPC IPC(8): B62D5/07
CPCB62D5/075B62D5/093
Inventor 彼特盖德·佩斯特卢普拉维·堪巴吉
Owner 丹佛斯动力系统有限公司
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