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Rotary valve assembly for digital hydraulic oil cylinder and corresponding mechanical feedback digital hydraulic oil cylinder

A digital hydraulic and mechanical feedback technology, applied in mechanical equipment, servo motor components, fluid pressure actuators, etc., can solve problems such as poor electrical interference resistance, small oil pressure adjustment range, and extremely high requirements for system pressure stability. Achieve the effects of improving anti-interference ability, reducing energy loss, and reducing viscosity requirements

Inactive Publication Date: 2021-04-16
苏州宏腾液压机电科技有限公司
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0002] The speed and position of traditional hydraulic cylinders are controlled by proportional valves or servo valves. This control method has the following disadvantages: 1) The requirements for system pressure stability are extremely high; 2) High power consumption, the energy loss reaches 50 % or more; 3) The cleanliness of the oil is highly required, and the anti-pollution ability is extremely poor; 4) Due to the use of analog control, the ability to prevent electrical interference is poor
The existing control valve is a linear feed type, and its disadvantage is that the range of oil pressure adjustment is small, and the stability of pressure adjustment needs to be further improved

Method used

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  • Rotary valve assembly for digital hydraulic oil cylinder and corresponding mechanical feedback digital hydraulic oil cylinder
  • Rotary valve assembly for digital hydraulic oil cylinder and corresponding mechanical feedback digital hydraulic oil cylinder
  • Rotary valve assembly for digital hydraulic oil cylinder and corresponding mechanical feedback digital hydraulic oil cylinder

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Embodiment Construction

[0023] In order to make the technical solutions and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] Such as figure 1 As shown, a rotary valve assembly for a digital hydraulic cylinder includes a valve core A and a valve sleeve B assembled outside the valve core A.

[0025] Specifically, such as figure 2 As shown, the spool A is a shaft-shaped rotator. From left to right, it is the feedback connection end 1, the first oil distribution section 2, the second oil distribution section 3, the third oil distribution section 4, and the drive connection shaft 5. The axial center of the core A is provided with the first passage A1, the first oil distribution section 2 is provided with the second passage A2 along the radial direction, the third oil distribution section 4 is provided with the third passage A3 along the radial direction, the first oil dist...

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Abstract

The invention relates to a rotary valve assembly for a digital hydraulic oil cylinder and a corresponding mechanical feedback digital hydraulic oil cylinder. The rotary valve assembly for the digital hydraulic oil cylinder comprises a valve element and a valve sleeve assembled on the outer side of the valve element, and the valve element is a shaft-shaped revolving body; a feedback connecting end, a first oil distribution section, a second oil distribution section, a third oil distribution section and a driving connecting shaft are sequentially arranged from left to right, a first channel is formed in the axial center of the valve element, a second channel is formed in the first oil distribution section in the radial direction, and a third channel is formed in the third oil distribution section in the radial direction; and a fourth channel, a fifth channel and a sixth channel are distributed in the axial direction and are arranged in the radial direction of the valve sleeve, the axis of the fourth channel and the axis of the second channel are located on the same radial plane, the fifth channel is arranged on the outer side of the second oil distribution section, and the axis of the sixth channel and the axis of the third channel are located on the same radial plane. Therefore, the energy consumption loss of the oil cylinder can be reduced, and the requirements of an oil cylinder system on the oil cleanliness and the oil viscosity are reduced.

Description

technical field [0001] The invention belongs to the technical field of oil cylinder manufacturing, and in particular relates to a rotary valve assembly for a digital hydraulic oil cylinder and corresponding built-in and external mechanical feedback digital hydraulic oil cylinders. Background technique [0002] The speed and position of traditional hydraulic cylinders are controlled by proportional valves or servo valves. This control method has the following disadvantages: 1) The requirements for system pressure stability are extremely high; 2) High power consumption, the energy loss reaches 50 % or more; 3) The cleanliness of the oil is high, and the anti-pollution ability is extremely poor; 4) Because it is controlled by analog quantity, the ability to prevent electrical interference is poor. Therefore, the stability of the traditional hydraulic cylinder control method is poor. [0003] As a high-precision hydraulic actuator, digital hydraulic cylinder has received more a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/02F15B15/14
Inventor 胡伟民徐震宇李一唯
Owner 苏州宏腾液压机电科技有限公司
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