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Digital servo hydraulic cylinder

A technology of hydraulic cylinders and cylinder blocks, which is applied in the direction of fluid pressure actuators, etc., can solve the problems of high counterfeiting of servo valves and sensor servo controllers, cost and high technical thresholds hindering the popularization of servo hydraulic cylinders, high control technology, etc. Achieve the effects of improving anti-pollution ability, avoiding leakage loss, and simplifying the hydraulic system

Inactive Publication Date: 2015-09-23
上海美西为机电设备有限公司
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

[0002] Traditional servo hydraulic cylinders must use high-precision servo valves and a sensor or force sensor and high-precision servo controller to achieve servo control, which requires a very high system cleanliness and must be used with multi-stage filtration, and the servo hydraulic cylinder must be Only through high-precision masks can the control accuracy be guaranteed. In addition, the counterfeiting of servo valves, sensors, and servo controllers is very high, and requires high control technology, so its cost and high technical threshold have seriously hindered the general promotion of servo hydraulic cylinders.

Method used

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Embodiment 1

[0041] Such as Figure 1-Figure 3 As shown, the present invention provides a digital servo hydraulic cylinder, which includes a stepper motor 1, a rear end cover 2, a digital valve block 3, a cylinder body 4, and a front end cover 5 connected in sequence, a plane thrust bearing 6, a hydraulic slide valve 7, a valve The core nut 8, the ball screw 9, the screw nut 10, and the hollow piston rod 11 are designed and combined in the hydraulic cylinder. The stepper motor 1 generates rotational motion by receiving the digital pulse signal sent by the external dedicated digital controller, computer or PLC programmable controller, and the spool valve core 13 in the hydraulic spool valve 7 passes through the flat key 12 and the plane thrust bearing 6 connected to drive the spool 13 of the spool to rotate. Further, such as figure 1 As shown, the plane thrust bearing 6 is installed at the rear end of the hydraulic spool valve 7 and in the rear end cover 2 to bear the axial load, ensure t...

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Abstract

The invention relates to the field of mechanical digital control, in particular to a digital servo hydraulic cylinder. A stepping motor directly drives a valve spool, large closed-loop control is realized by the aid of mechanical rigid feedback, leakage loss of a pilot stage is avoided by direct-acting design, the anti-pollution capacity of a valve is improved, a hydraulic system is simplified, single-cylinder multistage speed and directions can be controlled, multi-cylinder synchronous and reverse synchronous control and multi-cylinder interpolated linkage real-time control can also be realized, bidirectional data exchange with a field bus and an Ethernet can be performed, and the digital servo hydraulic cylinder has bus control and continuous control functions.

Description

technical field [0001] The invention relates to the field of mechanical digital control, in particular to a digital servo hydraulic cylinder. Background technique [0002] Traditional servo hydraulic cylinders must use high-precision servo valves and a sensor or force sensor and high-precision servo controller to achieve servo control, which requires a very high system cleanliness and must be used with multi-stage filtration, and the servo hydraulic cylinder must be Only through high-precision masks can the control accuracy be guaranteed. In addition, the counterfeiting of servo valves, sensors and servo controllers is very high, and requires high control technology. Therefore, its cost and high technical threshold have seriously hindered the general promotion of servo hydraulic cylinders. Contents of the invention [0003] In view of the above problems, the present invention provides a digital servo hydraulic cylinder. [0004] A digital servo hydraulic cylinder is chara...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/14F15B15/20
CPCF15B15/14F15B15/20
Inventor 孙海红
Owner 上海美西为机电设备有限公司
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