专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20080016862A1 Hydraulic Switching Arrangement, Particularly for the Drive of Concrete Spreader Masts 审中-公开
标题翻译：液压开关装置，特别适用于混凝土搅拌机的驱动
公开(公告)号：US20080016862A1
公开(公告)日：2008-01-24
申请号：US11664628
申请日：2006-05-26
申请人： Paul Von Baumen , Hartmut Benckert , Werner Munzenmaier
发明人： Paul Von Baumen , Hartmut Benckert , Werner Munzenmaier
IPC分类号： F15B11/00
CPC分类号： F15B11/055 , E04G21/0436 , F15B11/165 , F15B2211/20553 , F15B2211/253 , F15B2211/40515 , F15B2211/413 , F15B2211/426 , F15B2211/455 , F15B2211/46 , F15B2211/6054 , F15B2211/651
摘要： The invention relates to a hydraulic circuit arrangement, in particular for the drive of concrete distributor masts. The circuit arrangement comprises at least one hydraulic load (34, 35, . . . ), the latter being connected at the inlet side by means of a feed line (64) to the pressure outlet of a hydraulic positive displacement pump (60), and comprises at least one proportional valve (56) which is arranged in the feed line (64), is assigned one of the loads and, in its rest position, blocks the feed line (64), and in an operating position, forms a throttle aperture (57) with a variable opening cross section. Also provided in the feed line (64) is a reversing group (82), which in the standby state is connected to the tank (62) and in the operating position is connected to the at least one load (34, 35, . . . ). The positive displacement pump (60) has an adjusting element (58) which is controlled by means of a feed flow regulator (70) which is arranged in the pump branch (111) and comprises a directional control valve (71), one pilot control inlet of which is pressurized with the pressure (p) prevailing at the outlet of the positive displacement pump (60) and the opposite pilot control inlet of which is spring-loaded with a defined preload force and is additionally pressurized with the load pressure (pLS) prevailing downstream of the throttle aperture (57). In order to ensure reliable operation even in the start-up phase, according to the invention, a control group (107) which reacts to the load pressure (pLS) is provided with a switching valve (100) which, below a predefined minimum valve of the load pressure (pLS), places the adjusting element (58) of the positive displacement pump (60) into its position for maximum feed flow.
摘要翻译：本发明涉及一种液压回路装置，特别是用于混凝土分配器桅杆的驱动。电路装置包括至少一个液压负载（34,35 ...），后者通过进料管线（64）在入口侧连接到液压容积式泵（60）的压力出口，并且包括布置在供给管线（64）中的至少一个比例阀（56），被分配为一个负载，并且在其静止位置阻止进给管线（64），并且在操作位置形成具有可变开口横截面的节流孔（57）。还设置在供给管线（64）中的反转组（82），其在待机状态下连接到箱（62），并且在操作位置连接至少一个负载（34,35，...）。）。正排量泵（60）具有调节元件（58），该调节元件（58）通过设置在泵分支（111）中并包括方向控制阀（71）的进给流量调节器（70）来控制，一个先导控制其入口通过在容积式泵（60）的出口处的压力（p）被加压，并且其相对的先导控制入口具有限定的预加载力弹簧加载并且额外地以负载压力（pLS ）在节流孔（57）的下游。为了即使在起动阶段也能确保可靠运行，根据本发明，对负载压力（pLS）作出反应的控制组（107）设置有切换阀（100），该切换阀在预定的最小阀的负载压力（pLS），将正排量泵（60）的调节元件（58）置于其最大进给流量的位置。

2. 发明申请

US20060245943A1 Device and method for controlling a thick matter pump 有权
标题翻译：用于控制厚物质泵的装置和方法
公开(公告)号：US20060245943A1
公开(公告)日：2006-11-02
申请号：US10558939
申请日：2005-03-18
申请人： Wilhelm Hofmann , Werner Munzenmaier
发明人： Wilhelm Hofmann , Werner Munzenmaier
IPC分类号： F04B17/00
CPC分类号： F04B15/02 , Y10S417/90
摘要： A device and a method for controlling a two-cylinder thick matter pump comprising delivery pistons that are actuated by means of a hydraulic reversible pump (6) via hydraulic drive cylinders that are controlled by said pump in a push-pull manner. For each pressure stroke, the delivery cylinders (50, 50′) are connected to a delivery conduit (58) by means of a pipe switch (56). At the end of each delivery stroke, a reversal process of the pipe switch (56) and the reversible pump (6) is triggered. The aim of the invention is to achieve a reliable operation even of single-circuit two-cylinder thick matter pumps. To this end, the pipe switch comprises a position transmitter responding to the pivoting position thereof. According to the invention, at least two cylinder switching sensors are arranged on the working cylinders at a distance from each other, responding to the passing pistons of the drive cylinder, and/or a pressure sensor responding to the pressure course at the high-pressure outlet of the reversible pump is provided. The computer-assisted reversing device comprises a control routine responding to output signals of the position transmitter and to output signals of the cylinder switching sensors and/or the pressure sensors, enabling the programmed control of a control body for adjusting the flow quantity and direction of the reversible pump, and a reversing element arranged in the hydraulic branch of the pipe switch.
摘要翻译：一种用于控制双缸厚物质泵的装置和方法，包括通过由所述泵以推挽方式控制的液压驱动缸通过液压可逆泵（6）致动的输送活塞。对于每个压力冲程，输送缸（50,50'）通过管道开关（56）连接到输送管道（58）。在每个输送冲程结束时，触发管道开关（56）和可逆泵（6）的反转过程。本发明的目的是即使采用单回路双缸厚料泵也能实现可靠的运行。为此，管道开关包括响应于其枢转位置的位置传感器。根据本发明，响应于驱动气缸的通过的活塞，和/或响应于高压下的压力进程的压力传感器，至少两个气缸切换传感器被布置在工作气缸上彼此间隔一定距离提供可逆泵的出口。计算机辅助换向装置包括响应于位置传感器的输出信号的控制程序，并输出气缸切换传感器和/或压力传感器的信号，使控制体的编程控制能够调节流量和流向可逆泵和布置在管道开关的液压分支中的反向元件。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式