Fault-tolerant reversing valve

A reversing valve and valve core technology, applied in the field of reversing valves, can solve the problems of high manufacturing requirements, inability to continue working, and inability to meet, and achieve the effects of reducing the number of parts to be processed, realizing real-time detection, and improving control accuracy.

CN111365314AInactive Publication Date: 2020-07-03NINGBO INST OF TECH ZHEJIANG UNIV ZHEJIANG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2020-07-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a fault-tolerant reversing valve. The fault-tolerant reversing valve comprises a main body valve, a circumferential driving mechanism and an axial driving mechanism, wherein one end of the main body valve is connected with the circumferential driving mechanism, and the other end of the main body valve is connected with the axial driving mechanism. The main body valve is provided with a first valve core and a second valve core, one end of the first valve core is connected with a first servo motor through a first gear, the other end of the first valve core abuts against afirst linear sliding block, and the first linear sliding block is connected with a first rack; one end of the second valve core is connected with a hand wheel through a second gear, the other end ofthe second valve core abuts against a second linear sliding block, and the second sliding block is connected with a second rack; the first gear and the second gear are engaged with a fourth gear, thefirst rack and the second rack are engaged with a third gear, and a second servo motor is connected to the third gear. According to the fault-tolerant reversing valve, the main body valve and the valve cores are directly matched, a valve sleeve structure is omitted, and oil reversing can be continued through other driving parts after a main driving motor is damaged.
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Description

technical field

[0001] The invention belongs to the field of reversing valves, in particular to a fault-tolerant reversing valve. Background technique

[0002] The fault-tolerant control of electro-hydraulic commutation technology refers to controlling the hydraulic actuators to continue to complete the commutation function by relying on the driving components that can still work normally after some driving components fail. Among them, the reversing valve is the core component of the electro-hydraulic reversing technology, and its performance and fault-tolerant control function directly determine the working performance and fault-tolerant performance of the electro-hydraulic reversing technology.

[0003] So far, there is no electro-hydraulic directional valve with fault-tolerant function, that is, after the drive part fails, the electro-hydraulic directional valve cannot continue to work. In the absence of fault-tolerant function, for some large-scale equipment that is inc...

Examples

Embodiment Construction

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0042] refer to figure 1 -, the present invention discloses a fault-tolerant reversing valve, which includes a circumferential driving mechanism, a main valve (including a valve body 3 and a valve core part), and an axial driving mechanism. Wherein, the circumferential driving mechanism includes a first servo motor 11, a gear transmission mechanism 12 (comprising a first gear, a fourth gear, and a second gear meshed in sequence) and a hand wheel 1...