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A technology of advanced support and return airway, which is applied in the direction of mine roof support, mining equipment, earthwork drilling and mining, etc., can solve problems such as unstable standing, poor connection of support beams to the top, uneven structural force, etc. small effect
Inactive Publication Date: 2015-06-10
CHINA COAL BEIJING COAL MINING MACHINERY
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Problems solved by technology
This kind of support is better used when the roof and bottom of the return air tunnel are in good condition. If the roof of the tunnel is uneven, it will cause poor connection of the top beam of the support, uneven structural force, and damage to some structural parts in severe cases.
If the floor of the roadway is uneven, it will cause the left and right racks to be skewed, and the stand will be unstable. In severe cases, the racks will fall down and affect the normal production order.
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specific Embodiment approach
[0017] The novel air return lane advance support of the present invention, its preferred embodiment is:
[0018] It includes an integral base and an integral top beam, the middle of the integral top beam is provided with a crosshead hinge point, and columns are respectively provided between the front and rear parts of the integral top beam and the integral base, and the crosshead is hinged A shield beam is provided between the point and the rear of the integral base.
[0019] The crosshead hinge point is provided with two mutually perpendicular hinge shafts, the upper hinge shaft is arranged horizontally and is hinged with the middle part of the integral top beam, and the lower hinge shaft is arranged vertically and is hinged with the upper end of the shield beam.
[0020] The front part and the rear part of the integral top beam are symmetrically arranged around the hinge point of the crosshead.
[0021] The front end, rear end and both sides of the integral top beam are res...
specific Embodiment
[0024] Such as image 3 , Figure 4 As shown, the new return airway advance support of the present invention adopts an integral form of the base and the top beam, the base has a large bottom contact area, and the bottom plate has a small specific pressure, which can adapt to the uneven working conditions of the roadway bottom plate. The overall roof beam plus the front, rear, left and right side wall panels can increase the area of the roof protection and protect the safety of personnel.
[0025] Such as Figure 5 , Figure 6 As shown, the overall top beam and the cover beam are hinged with a cross head, so that the support top beam can deflect left and right at a certain angle during use, which can well adapt to the uneven working conditions of the roadway roof. Each support adopts four-column form, which has good stability and strong lodging resistance.
[0026] The advance support in the return airway in the prior art is disassembled when going down the well, and then...
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Abstract
The invention discloses a novel air return way advance support. The novel air return way advance support comprises an integrated base and an integrated top beam. A cross head hinge joint point is arranged in the middle of the integrated top beam. Stand columns are arranged between the front portion of the integrated top beam and the integrated base and between the rear portion of the integrated top beam and the integrated base respectively. A covering beam is arranged between the hinge joint point of the integrated top beam and the rear portion of the integrated base. The front portion and the rear portion of the integrated top beam are arranged into a front and back symmetrical structure with the cross head hinge joint point as the center. Wall protection plates are arranged at the front end, the rear end and the two sides of the integrated top beam respectively. Multiple novel air return way advance supports are sequentially arranged in an air return way in a front and back mode. The integrated bases of every two adjacent supports are connected through a push-pull oil cylinder. The novel air return way advance support can adapt to the working condition that a bottom plate of a roadway is not smooth, the top protection area can be enlarged, and the personnel safety is protected.
Description
technical field [0001] The invention relates to a coal mine hydraulic support, in particular to a novel return airway leading support. Background technique [0002] At present, with the popularization of coal mining mechanization and the emphasis on the safety of channel support, more and more roadway advanced supports are used in modern mines. [0003] Such as figure 1 , figure 2 As shown, in the prior art, the general form of the return airway leading support is in the form of a left and right frame, which is composed of an anchor frame, a front frame and a rear frame. The front frame and the rear frame are both front and rear split hinge structures. The anchor bracket at the front controls the direction of travel of the stand. This kind of support is better used when the roof and bottom of the return air tunnel are in good condition. If the roof of the tunnel is uneven, it will cause poor connection of the top beam of the support, uneven structural force, and damage t...
Claims
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Application Information
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