Valves for hydraulically actuated metering flaps and hydraulic systems with metering flaps and valves
A metering and hydraulic technology, which is applied in the field of hydraulically controlled metering baffle valves and hydraulic systems with metering baffles and valves, can solve discomfort and other problems, and achieve the effect of stable longitudinal guidance
Active Publication Date: 2018-06-12
ROBERT BOSCH GMBH
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
Response delays in the range of a few tenths of a second are particularly uncomfortable for the operator of a hydraulically driven machine
Method used
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[0041] The basic structure of the valve 2 according to the invention and its mode of function, for example in cooperation with a metering flap embodied in the form of a control slide, is explained with reference to FIGS. 1 to 4 . exist Figure 1A The control slide valve 100 shown as an example for a metering flap comprises a housing 102 with a housing interior 104 and a slide axis 108, the control slide valve also includes a The control slide 106 and a control slide spring element 118 are arranged linearly displaceable in the longitudinal bore 148 of the housing interior 104 in the direction of the slide axis 108 . The control slide 106 delimits a control pressure chamber 110 in the housing interior 104 by means of its slide pressure surface 112 and can be prepositioned in a blocking position by means of the control slide spring element 118 . The block spring element is shown in this blocked position in FIG. 1 . The control slide spring element 118 is arranged with respect to...
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The invention discloses a valve, which has a valve housing with an axially extending inner chamber and an extrusion device, the extrusion device can move axially along the stroke path in the inner chamber, and divides a first valve in the inner chamber. and the second pressure chamber and have a throttling device via which the first and the second pressure chamber can be brought into the pressure medium connection and which are configured such that for at least one stroke direction of the extrusion device and over the entire A pressure medium exchange between the first and second pressure chambers takes place on the stroke path via only one throttle. The invention also discloses a hydraulic system with a hydraulically adjustable metering flap having a cut-off position and a first flow-through position and a housing with a housing interior and a housing interior A hydraulically adjustable control slide delimits a control pressure chamber in the housing interior, and the hydraulic system also has a valve whose first or second pressure chamber is in pressure medium connection with the control pressure chamber.
Description
technical field [0001] The invention relates to a valve according to the preamble of claim 1 . Such a valve can be used to hydraulically actuate the adjustment movement of a control slide of a hydraulically adjustable metering flap. The invention also relates to a hydraulic system with a metering flap and a valve, wherein the metering flap has a hydraulically adjustable control slide, the valve serves to actuate the adjustment movement of the control slide, The invention also relates to a defined coupling of the metering flap to one or two such valves. Background technique [0002] The use of a metering flap here means a hydraulically actuatable control valve for regulating a flow of pressure medium for a hydraulic consumer. Such a metering flap comprises a housing with a housing interior and a hydraulically adjustable control slide arranged in the housing interior, which can have a prepositionable stop position and at least one first through-flow position in which an ope...
Claims
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IPC IPC(8): F15B13/042F16K31/12
CPCF15B13/042F16K31/12F15B11/0413F15B13/0426F15B2211/405F15B2211/40515F15B2211/40584F15B2211/428F15B2211/355F15B2211/6355
Inventor S.特拉佩T.魏克特
Owner ROBERT BOSCH GMBH