Shield

 

The invention relates to mining and can be used for drilling thick layers with the release of minerals from the roof strata at the dam pipeline. The objective of the invention is to increase reliability by eliminating cross shield flux produced coal. Shield for work in shifting layer of thick layers of minerals to release it from the roof or miduclevel thickness on the dammed conveyor includes blocking, pivotally connected to the enclosure, the hydraulic jacks, the base console, directed toward the production of a useful mineral, shield shutter release and gidrotartrat control sliding gate, one end of which is hinged to the base. The console is equipped with two levers, one ends of which are pivotally connected to the console, the other with a sliding gate. Gidrotartrat control shield bolt other end fixed in the hinge connection of one of the levers with a sliding gate. One of the levers may be D-shaped. The shutter can be mounted in the bottom of the console. 2 C.p. f-crystals, 3 ill.

The invention relates to the mining industry, in particular to rascus through the gates of sections for dispensing receipt of the rock mass from the zone of release, this provides the maximum opening of the window for release at the exit of the mineral and the ceiling of the receipt of the rock mass, when it begins to enter the waste rock collapsed roof of the reservoir.

Famous shield section (see and.with. The USSR №1021788 And class. E 21 D 23/04, 1983, "the shield"), including the overlap, the hinge associated fence with adjustable levers, the base and the rack in which the shield shutter pivotally suspended on the end of the fence and is driven by a Jack. While the shield shutter made of sliding, which makes it possible to block access empty breed when it appears in the window and fully open the window when entering collapsed fossil.

However, this design allows the execution of the specified function only when the maximum height of the shields. With the decrease in the height of the pivot point of the shield gate with fence down and the shield shutter even when fully drawn telescopic part cannot pass over the conveyor and open access collapsed coal loading.

Change the height of the suspension point of the shutter in the process leads to unstable conditions of release in the process, what prevents the OPE is ovejero, coming from the valves located upstream of the coal, the shutter when opening intersects the body of the flow, thereby confusing the traffic from the conveyor, including the side face space, which leads to loss of production and increase the cost of manual labor grinding of minerals in the workspace.

Famous shield in which the shield shutter hanging from the high console base (and.with. The USSR №1070318 And class. E 21 D 23/04, 1984).

The above structure of the shield shutter pivotally suspended at a constant height from the dam pipeline, but swinging in a circular motion with the Jack shield not fully closes the window at full output in the output side, as his end away from the vertical rises.

In addition, the trajectory of the end of the shield is such that when opening it also crosses the traffic moving through the pipeline.

The invention aims at avoiding these disadvantages.

To achieve provided by the invention of the technical result in section lining the console base, directed to the output side, is equipped with two levers, one ends of which are pivotally connected to the console, others with shito the RMU. The shield is fastened to the bottom of the console.

This ensures optimal trajectory of the shield, which is the maximum possible opening of the window to release eliminates the possibility of crossing the shield flow of coal on the conveyor.

The invention is illustrated by drawings, where:

- Fig.1 shows a General view of the section with the bolt, side view;

- Fig.2 is a detailed drawing of the shutter mechanism and the trajectory of its movement;

- Fig.3 - phase motion of the bolt.

The shield consists of a slab 1, the hinge associated fencing 2, base 3, are installed on the hydraulic jacks 4, and the shield 5, pivotally connected levers: front 6 and rear 7. The shield 5 is actuated by hydraulic cylinder control 8, which has one end hinged to a high console 9 of the base 3 facing the issue, the other in the hinge connection of one of the levers 6 or 7 with a shield 5. The shield 5, the levers 6 and 7 and gidrotartrat management 8 form a shutter. The shutter is fixed at the bottom of the console 9. Dammed conveyor 10 can be moved using a hydraulic cylinder 11 in step "1".

To ensure maximum opening of the shutter of the window 12 for release while maintaining the dimensions of the shield 5 and the levers 6 and 7, provided the AI shield shutter of the maximally closed position And a maximally open position B due to the proposed design its end passes through the trajectory AB, without crossing profile transported by the conveyor weight no matter what the position of the conveyor under the console, the bottom surface of the shield while moving it also does not apply for this profile.

The release can be performed both in the process of shifting sections, and after shifting. In Fig.3 shows the position of the shutter to shield and dammed pipeline in the release process from the roof strata.

The release from the roof strata as follows.

In the initial position before the release of the conveyor 10 is pulled to the shields (Fig.3 "a").

In the General case closures linear shields are closed, the ends of the fully extended in the dam boards are in the lower position.

After shifting section of the conveyor is under the shield, and sections ready to be released (Fig.3 "b").

Upon the opening of the shield minerals comes to working dammed conveyor and is transported through the lava on the gate material handler (Fig.3 "in").

The rate of production and the amount received on the conveyor fossil controlled by the height of the openable shutter window in the dam. Similarly, the shutter is used to prevent excess fossil on the conveyor and rolling it over the side of the conveyor in a slave"g"), for a complete cessation of receipt of the breed of the dam the conveyor is lifted to the grounds of the lining (Fig.3 "d"), even when the shutter is open fossil angle of repose on the conveyor is not received (Fig.3 "e").

The adopted design of the closures provides the path of the shield, precluding its intersection with the flow of the fossil on the line that provides the most efficient operation of your system.

Under favorable conditions of release for a more efficient operation of the valves pre-installed on the window height required for graduation (Fig.3 "in"). In this case, the release occurs upon movement of the shields to the slaughter.

For a complete cessation of production is bringing up the conveyor to the grounds of shields (Fig.3 "e").

The issue is in the order of movement of the sections in the lava, i.e. from the conveyor to the vent passage. Operators producing open several gates in a row or on specific groups of sections. The specific order of doing work on the issue is set empirically as experience is gained.

The discharge from the dam is to produce at each shifting of the liner.

Belt speed sections on the front of the lava determine the emnd roof with sliding sun visors, articulated consoles ceilings shields.

The release cycle ends with the release of the last shields the ventilation drift, but by the duration it should not take longer than the notch harvester shifting layer, because when returning the harvester to the conveyor drift all of the shields and the AFC should be moved to a new face.

This shield with the release of minerals from the roof strata at the dam conveyor ensures the reliable operation of lining, excluding the intersection shield of traffic on the conveyor.

Claims

1. Shield for work in shifting layer of thick layers of minerals to release it from the roof or miduclevel thickness on the dam pipeline, including the overlap, pivotally connected to the enclosure, the hydraulic jacks, the base console, directed toward the production of a useful mineral, shield shutter release and gidrotartrat control sliding gate, one end of which is hinged to the base, wherein the console is equipped with two levers, one ends of which are pivotally connected to the console, the other is the CSO of the levers with a sliding gate.

2. Shield under item 1, characterized in that one of the levers has a G-shaped.

3. Shield under item 1, characterized in that the shutter is fixed at the bottom of the console.

 

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