A hydraulic support for split pressure relief of front and rear columns
A hydraulic support, front and rear column technology, applied in the direction of mine roof support, mining equipment, earthwork drilling, etc., can solve the problems of uneven roof pressure, tilt, hydraulic support tilt, etc., to ensure balance and prevent tilt effect.
Active Publication Date: 2018-06-29
ANHUI UNIV OF SCI & TECH
View PDF8 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] The purpose of the present invention is to provide a hydraulic support control method to solve the problem of hydraulic support tilt caused by uneven roof pressure
[0006] The purpose of the present invention is to provide a front and rear split pressure relief valve hydraulic support to solve the problem of inclination caused by uneven pressure on the roof
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0035] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0036] In the mining site of the working face, the tilting of the hydraulic support caused by the uneven pressure of the roof occurs from time to time. process parallel to the stand base. In the process of implementing the present invention, the inventors found that when the hydraulic support is tilted, one end of the support base will lift off the ground, which will cause subsequent work failures, and the support top beam will generally not cause subsequent work failures regardless of whether it is parallel to the ground. At the same time, the hidden deformation ability or equipment potential of the hydraulic support structure itself can be used for the anti-tilt control of the hydraulic supp...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a hydraulic supporting frame achieving separate pressure relief of a front pillar and a rear pillar and a control method for the same in order to correct inclination of the hydraulic supporting frame caused by top plate pressure in the working face recovery process. The hydraulic supporting frame comprises a supporting frame top beam, a supporting frame base, a supporting frame caving shield, a supporting frame tail beam, the front-row supporting frame vertical pillar, the rear-row supporting frame vertical pillar, a front-row pressure relief valve arranged on the front-row supporting frame vertical pillar, and a rear-row pressure relief valve arranged on the rear-row supporting frame vertical pillar, wherein the front-row supporting frame vertical pillar and the rear-row supporting frame vertical pillar are located between the supporting frame top beam and the supporting frame base; the front-row pressure relief valve and the rear-row pressure relief valve carry out pressure relief independently; and when top plate coming pressure is not uniform, automatic unloading is conducted through the front-row pressure relief valve or the rear-row pressure relief valve, so that the front or rear portion height of the supporting frame top beam is reduced to prevent inclination. According to the hydraulic supporting frame in the invention, when top plate pressure is not uniform, the pressure relief valve on the pillar bearing large stress can be opened in time to carry out pressure relief actively, the supporting frame top beam is lowered partially, the balance of the supporting frame is guaranteed, and the purpose of preventing inclination of the supporting frame is achieved.
Description
technical field [0001] The invention relates to fully mechanized mining equipment in coal mines, in particular to a hydraulic support for coal mining and a control method for the hydraulic support. Background technique [0002] The hydraulic support is one of the key equipment in the coal mine fully mechanized mining face, and there are a large number of them. Whether the hydraulic support can work normally is very important to the safe and efficient production of the entire working face. [0003] During the mining process of the working face, the uneven distribution of the roof pressure can easily cause the tilting accident of the support, which will inevitably affect the normal production of the coal mine. [0004] At present, strengthening the end support of the working face or controlling the propulsion speed are often used on site to prevent the support from tilting. Such measures are costly, take up a lot of time, and have poor effects. Contents of the invention [...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): E21D23/26E21D23/16
CPCE21D23/16E21D23/26
Inventor 王磊刘怀付李家卓朱传奇
Owner ANHUI UNIV OF SCI & TECH