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Vehicle

A technology for vehicles and switching valves, applied in the field of vehicles, can solve the problems of expensive, complex supply of hydraulic drive components and valve components, etc.

Active Publication Date: 2021-08-31
PUTZMEISTER ENG GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Hydraulic drive assemblies and especially valve assemblies are relatively complex and therefore expensive to provide

Method used

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Examples

Experimental program
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Embodiment Construction

[0034] exist figure 1 A vehicle 11 is shown in , which is also known as a so-called concrete pump. The vehicle 11 has a driver's cab 12 at the front and a larger service surface 14 at the rear. Two supports 16 at the front and two supports 17 at the rear, two on each side, are arranged on the use surface, which are constructed in a known manner. The front left support 161 is shown, which can likewise protrude to a different extent over its length, as will be explained further below. A support 17l is provided on the left side of the rear part. The two supports 16 and 17 can swing within a certain range in the horizontal plane and can protrude downwards to different degrees.

[0035] On the use surface 14 there is arranged a mast assembly 20 with four mast elements 21 b to 21 e on a turntable 23 . The mast elements 21b-e are folded together for transport, in image 3 where they are at least schematically unfolded from one another.

[0036] At the rear of the vehicle 11 the...

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PUM

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Abstract

A vehicle having a thick matter pump has multiple supporting devices, a rotatable mast assembly with part-mast members, and a hydraulic drive assembly with hydraulic drives for the supporting devices and the mast assembly. A valve assembly is provided for the hydraulic drive assembly. The valve assembly has a group of proportional valves and a group of switching valve devices which are each connected to at least one hydraulic drive of the supporting devices or the part-mast members, wherein the switching valve devices are connected downstream of the proportional valves. Exactly one switching valve device is supplied by exactly one proportional valve and is connected downstream of exactly one proportional valve such that outputs of the proportional valves lead exclusively to inputs of the switching valve devices.

Description

technical field [0001] The invention relates to a vehicle with a mast assembly thereon, wherein at least one support means is also provided on the vehicle. Background technique [0002] Such a vehicle also has, for example, a Dickstoff pump (sometimes referred to as a slurry pump) and is then likewise known as a so-called concrete pump. Such a vehicle has a hydraulic drive assembly, so that not only the mast assembly but also the at least one supporting means can be moved. The support apparatus is used to support or align the vehicle. The mast assembly thereon is moved and aligned hydraulically and is used, for example, to bring concrete to a defined point on a construction site by means of a concrete pump or a thick material pump for further processing. [0003] Hydraulic drive assemblies, and especially valve assemblies, are relatively complex and therefore expensive to provide. [0004] From DE 10 2018 202 148 B3 a mobile hydraulic system is known, for example for a mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G21/04B66C23/78F15B11/00B66C13/18
CPCE04G21/0436E04G21/0445B66C13/18B66C23/80F15B2211/3059F15B2211/3138F15B2211/3144F15B2211/7142B60S9/10E04G21/0463F15B13/02
Inventor J-M·维特M·迪堡
Owner PUTZMEISTER ENG GMBH