Concrete pumping equipment and travel control device and method for series oil cylinders

A stroke control, series cylinder technology, applied in pump control, mechanical equipment, fluid pressure actuating devices, etc., can solve the problem of not being able to adjust the cylinder stroke in time, and achieve the effect of avoiding cylinder collision and short stroke.

Active Publication Date: 2012-10-03
ZOOMLION HEAVY IND CO LTD
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0005] The present invention aims to provide a concrete pumping equipment, a stroke control device and a method of a serie

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  • Concrete pumping equipment and travel control device and method for series oil cylinders
  • Concrete pumping equipment and travel control device and method for series oil cylinders
  • Concrete pumping equipment and travel control device and method for series oil cylinders

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Embodiment Construction

[0022] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in a variety of different ways defined and covered by the claims.

[0023] As the first aspect of the present invention, there is provided a stroke control device of series cylinders. Such as figure 2 with image 3 As shown, the tandem oil cylinder includes a first oil cylinder 10 and a second oil cylinder 20 connected in series. The piston 12 of the first oil cylinder 10 and the piston 22 of the second oil cylinder 20 both move between the first position A and the second position B. The distance between the position B and the first position A is the set stroke, and the cavity in which the first oil cylinder 10 and the second oil cylinder 20 are connected in series is a communication cavity.

[0024] The stroke control device includes: a first position detection unit 30, installed on the first cylinder 10, for r...

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Abstract

The invention provides concrete pumping equipment and a travel control device and method for series oil cylinders. The travel control device for the series oil cylinders comprises a first position detecting unit (30), a second position detecting unit (40) and a controller (50), wherein the first position detecting unit (30) is arranged on a first oil cylinder (10) and used for detecting a first motion position (X) of a piston (12) in real time and generating a first motion position signal; the second position detecting unit (40) is arranged on a second oil cylinder (20) and used for detecting a second motion position (Y) of a piston (22) in real time and generating a second motion position signal; and the controller (50) is connected with the first position detecting unit (30) and the second position detecting unit (40) and used for receiving the first motion position signal and the second motion position signal and controlling the volume of a communicating cavity according to a predetermined control strategy to control the travel of the series oil cylinders. According to the travel control device, the problem that the travel of the oil cylinders cannot be timely adjusted in the prior art can be solved.

Description

Technical field [0001] The present invention relates to the field of oil cylinder control, and more specifically, to a concrete pumping equipment, a stroke control device and method of series oil cylinders. Background technique [0002] Such as figure 1 As shown, the Chinese patent CN 101776107A discloses a stroke control device for connecting oil cylinders in series. Please refer to figure 1 , The first oil cylinder 10 and the second oil cylinder 20 are arranged in series, and the rodless cavity thereof is connected to the valve 60, and the pressure oil output by the pump 80 enters the rodless cavity of the first oil cylinder 10 or the second oil cylinder 20 through the valve 60. The stroke control device uses two proximity switches 30' and 40' (the two proximity switches 30' and 40' are staggered by a certain distance D) to form a control area to detect the strokes of the first cylinder 10 and the second cylinder 20 . Through the positional relationship between the cylinder s...

Claims

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Application Information

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IPC IPC(8): F15B11/16F15B15/28
CPCF15B11/16F15B15/28F04B9/1172F04B15/02F04B49/06F04B2201/0201F15B11/22F15B2211/7128
Inventor 万梁李四中王佳茜彭志强李仁玉
Owner ZOOMLION HEAVY IND CO LTD
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