Synchronizing system for multiple hydraulic cylinders and control method for synchronizing system for multiple hydraulic cylinders
A technology of synchronization system and multiple hydraulic cylinders, which is applied in the directions of fluid pressure actuating system components, fluid pressure actuating devices, servo motors, etc., can solve the problem that synchronization accuracy is difficult to meet actual needs, synchronization accuracy is difficult to meet actual needs, and cannot be guaranteed. Problems such as synchronization accuracy of multiple hydraulic cylinders 3
Inactive Publication Date: 2013-10-02
SANY AUTOMOBILE HOISTING MACHINERY
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Problems solved by technology
[0004] Based on the fact that the hydraulic oil in the hydraulic system always flows to the hydraulic cylinder with a smaller load, it is impossible to guarantee the synchronization accuracy of multiple hydraulic cylinders 3 by using ordinary methods to control the multi-hydraulic cylinder synchronization system
At present, in order to make multiple hydraulic cylinders have high synchronization accuracy: one way is to force multiple hydraulic cylinders to act synchronously by increasing the rigidity of the rigid fixed mechanism 2; using this method is not only costly, but also the synchronizatio
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[0066] The core of the present invention is that multiple hydraulic cylinders in the multi-hydraulic cylinder synchronous system are divided into two types, one is the reference hydraulic cylinder, which drives the rigid solid connection mechanism to move; the other is the follower hydraulic cylinder, which The hydraulic cylinder can also drive the rigid fixed mechanism, but the driving action of the hydraulic cylinder follows the driving action of the reference hydraulic cylinder; the follow-up hydraulic cylinder is in a state of passive follow (following the reference hydraulic cylinder), and then the reference hydraulic cylinder and the follow-up hydraulic cylinder can be improved. Synchronization accuracy of hydraulic cylinders. Specific embodiments provided by the present invention are described below.
[0067] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. ...
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The invention discloses a synchronizing system for multiple hydraulic cylinders and a control method for the synchronizing system for multiple hydraulic cylinders. The synchronizing system for multiple hydraulic cylinders, disclosed by the invention, includes two hydraulic control valves, three hydraulic cylinders and a rigid fixed connection mechanism, as well as a control unit and a feedback pressure sensor, wherein two of the hydraulic cylinders are reference hydraulic cylinders, and the other hydraulic cylinder is a servo hydraulic cylinder; the hydraulic control valve connected with the servo hydraulic cylinder is a servo hydraulic control valve; pressure of a reserved hydraulic chamber of the servo hydraulic cylinder is detected by a feedback pressure sensor; the control unit is in signal connection with an electric control end of the servo hydraulic control valve; the control unit can be used for confirming the servo pressure of the servo hydraulic cylinder as per a detection signal of the feedback pressure sensor, and reducing the opening degree of the servo hydraulic control valve connected with the servo hydraulic cylinder when the servo pressure of the servo hydraulic cylinder is larger than a first threshold value. The synchronizing system for multiple hydraulic cylinders can improve the synchronization precision of actions of multiple hydraulic cylinders while controlling the cost.
Description
technical field [0001] The invention relates to hydraulic control technology, in particular to a multi-hydraulic cylinder synchronous system, and also relates to a control method of the multi-hydraulic cylinder synchronous system. Background technique [0002] The multi-hydraulic cylinder synchronization system is widely used in the process of mold, mold manufacturing and product molding process. [0003] Please refer to figure 1 , which is a schematic diagram of the working principle of a multi-hydraulic cylinder synchronization system. The multi-hydraulic cylinder synchronous system includes a plurality of hydraulic cylinders 3 and a rigid solid connection mechanism 2; in addition, it also includes an appropriate hydraulic control valve to control the extension or retraction of the hydraulic cylinders 3. The fixed ends of multiple hydraulic cylinders 3 are respectively fixed on predetermined base components, and at the same time, the movable ends of multiple hydraulic cy...
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Inventor 禹阳华简桃凤邹砚湖
Owner SANY AUTOMOBILE HOISTING MACHINERY
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