Water hydraulic driving device
A driving device, water hydraulic technology, applied in the direction of fluid pressure actuation device, servo motor assembly, mechanical equipment, etc., can solve the problems of external leakage work efficiency, large flow rate of plunger pump, internal leakage of water hydraulic components, etc., to achieve environmental protection The effect of transmission efficiency
Inactive Publication Date: 2014-08-13
HARBIN ENG UNIV
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Problems solved by technology
The existing water hydraulic pumps cannot well solve the influence of the pulsation of the water hydraulic driving source and the small flow output of the hydraulic pump, and the traditional flow valve that changes the caliber of the hydraulic valve to reduce the flow rate cannot well realize the water hydraulic system. Small flow high precision control
[0003] At present, domestic hydraulic components suitable for water hydraulic systems are still in the research stage. For example, the Chinese patent application number is 03118632.7, which is named axial plunger water hydraulic pump. The way of distribution, the material adopts corrosion-resistant alloy and ceramic composite material to reduce internal and external leakage and reduce friction, but the plunger pump has a large flow rate and cannot realize small flow control; Chinese patent application number is 201110336820.4 Digital pure water hydraulic proportional overflow The flow valve and the pilot-operated water hydraulic digital proportional directional valve with the application number 201110052842.8 realize the flow control of the water hydraulic system by changing the flow diameter of the hydraulic valve, but the structure is complex, and it does not solve the small flow high-precision control of the hydraulic system.
[0004] Due to the low viscosity of fresh water and sea water relative to hydraulic oil, and easy to cause metal corrosion, the above-mentioned commonly used water hydraulic components have problems such as internal leakage, external leakage and low work efficiency; at the same time, the flow rate of existing water hydraulic pumps is relatively low. Large and unrestricted pulsation, and the working characteristics of water hydraulic valves are pressure, flow and hydraulic valve diameter into a nonlinear change, it is difficult to achieve small flow, high precision control
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[0019] The present invention is described in more detail below in conjunction with accompanying drawing example:
[0020] combine Figure 1~3 , the patent of the present invention realizes the control of water hydraulic pressure with high precision and small flow through the servo control of the motor, which is mainly composed of a motor, a ball screw assembly, a water hydraulic cylinder assembly and a hydraulic valve assembly; the motor 1 and the ball screw assembly are connected through a joint The shaft device 4 realizes power transmission, and the ball screw assembly and the hydraulic cylinder assembly are connected through the sleeve end cover 11; the motor 1 is used as a power source to drive the ball screw assembly to realize the dynamic change of the position of the piston assembly in the hydraulic cylinder. Hydraulic source flow.
[0021] Such as figure 1 and figure 2 As shown, the motor 1 and the motor fixing bracket 3 are tightly connected by screws 2 and fixed ...
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The invention aims at providing a water hydraulic driving device. According to the water hydraulic driving device, a motor drives a ball screw assembly and a sleeve end cover to move rightwards and drives a water hydraulic cylinder piston rod to move rightwards, a water hydraulic cylinder A discharges water, a water hydraulic cylinder B sucks water, a one-way valve A is switched on to discharge water out of a system, a one-way valve D is switched on to suck water into the system, and a one-way valve B and a one-way valve C are switched off; when the sleeve end cover triggers a travel switch 2 during rightward movement, the motor reversely drives the ball screw assembly to drive the sleeve end cover to move leftwards, the water hydraulic cylinder A sucks water, the water hydraulic cylinder B discharges water, the one-way valve A is switched off while the one-way valve C is switched on to inwardly suck water, the one-way valve B is switched on to outwardly discharge water while the one-way valve D is switched off, and the motor is switched over again until the sleeve end cover continues to move leftwards and touches a travel switch 1, so that the water hydraulic system can continuously supply a hydraulic source to the outside. The water hydraulic driving device has the advantages of compact structure, convenience in mounting and the like and has the characteristics of hydraulic pulsation reduction and high-precision small-flow control.
Description
technical field [0001] The invention relates to a hydraulic drive device. Background technique [0002] The water hydraulic system uses water as the hydraulic medium. It has been widely valued for its safety, environmental protection and energy saving, and has become an important research direction of hydraulic technology. Water is used as a hydraulic medium, and its use will not cause environmental pollution. It is suitable for nuclear reactors, underwater operations, and food and other equipment environments that require a clean working environment. At the same time, water has flame resistance and can be widely used in work with open flames. environment. The existing water hydraulic pumps cannot well solve the influence of the pulsation of the water hydraulic driving source and the small flow output of the hydraulic pump, and the traditional flow valve that changes the caliber of the hydraulic valve to reduce the flow rate cannot well realize the water hydraulic system. ...
Claims
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IPC IPC(8): F15B13/02F15B15/14F15B15/20
Inventor 张铭钧杨超赵克楠赵文德姚峰马小委
Owner HARBIN ENG UNIV