RU36035U1 - Thin bed shearer - Google Patents

Description

CLEANER FOR TOHKPDC BEDS

The utility model relates to coal mechanical engineering and can be used in the coal industry, mainly for the mechanization of treatment operations in underground mining of coal from thin and very thin seams.

Known shearer EDW-300, (see the magazine "Gluckauf No. 1 (2), ISS No. 0130-1233, page 31, brochure for the combine EDW-300-LN company Eickhoff, Germany), containing the main rotary gearboxes with executive bodies , a cutting motor and an integrated chainless feed mechanism located between the conveyor bead and the face. The portal, which serves to guide the combine and place the controls and communications, is located above the conveyor. In this case, the axis of the cutting motor is located along the axis of the combine parallel to the face and the conveyor, and the cutting bodies of the combine are lifted by rotating the rotary gears around the axes perpendicular to the face and the conveyor.

Such a layout of the harvester relative to the face conveyor allows to reduce the width of the bottom hole, however, it leads to a significant increase in the height of the combine above the bottom of the conveyor at the points of engagement of the traction wheels of the feed mechanism with the gear rack in the area of action of the ends of the upper parts of the powered roof support.

Known shearer (see US patent No. 4 166 652 from September 4, 1979), which is taken as a prototype. Shearer contains the main body and portal. At the ends of the main body, rotary cutting units are installed, containing engines and handles, on which the cutting organs (screws) are placed.

The harvester is interconnected with a conveyor having upper shelves, block and bottom sides and a spreader bar located on the bottom side. At the same time, the handles of the cutting units located between the conveyor

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and face, hang over the upper shelf of the conveyor from the side of the face, partially overlapping it.

In the main body there are built-in feed mechanisms with traction wheels facing the downhole side of the conveyor with the possibility of engagement with the rail. The portal is located above the conveyor.

The axes of the electric motors of the cutting units are directed across the combine, perpendicular to the face and the conveyor.

The disadvantages of this design are:

- partial overlap by the arms of the cutting blocks of the protruding parts of the conveyor from its bottom side (lack of clearance), which prevents them from lowering below the upper shelf and determines the use of screws with an increased diameter;

-high height of the main body of the combine in the area of the rack and the traction wheels engaged with it, which limits the possibility of using the combine in very thin layers;

-low reliability of the feed mechanism in the conditions of constant filling of the meshing unit of the traction wheels with a rail located on the bottom side of the conveyor.

The utility model is based on the task: in a shearer for the extraction of thin formations by changing the layout and design of its components, to reduce the height of the shearer, improve working conditions and increase the reliability of the built-in feeder in a thin layer.

The problem is solved due to the fact that in the shearer for thin seams containing the main body with rotary cutting units mounted on its ends, there are built-in feeding mechanisms with traction wheels and a portal, while the shearer is interconnected with a conveyor that has upper shelves, a bottomhole and blockage side, a pin rail mounted with the possibility of engagement with traction wheels, and the portal is located above the conveyor, according to a utility model, between rotary cutting units and protruding parts of the bottomhole with conveyor torons there is a gap and rotary cutting units are installed with the possibility of lowering them below the upper conveyor shelf. Each built-in feed mechanism is made of two parts connected by transmission shafts located in the portal, one of which is high-speed, located in the main body of the combine from the downhole side of the conveyor, and the other is low-speed, placed in the portal from the dammed side of the conveyor and contains a traction wheel, while the pin bar is installed on the obstruction side of the conveyor, approximately at the level of its upper shelf.

The possibility of lowering the cutting units below the upper conveyor shelf, together with the implementation of the built-in feed mechanism from two spaced parts connected by transmission shafts, provides: firstly, reducing the overall height of the combine and fitting it into a thinner layer due to the free space above the conveyor from traction wheels, secondly, - improving working conditions and increasing the reliability of the built-in feed mechanism due to the location of the engagement nodes of the traction wheels with a rail on the dammed side of the conveyor pa, remote from coal loading zone.

The essence of the utility model is illustrated by drawings.

In FIG. 1 shows a general view of the shearer from the obstruction; in FIG. 2 shows a general view of the shearer in plan; in FIG. 3, view A in FIG. 1, a view of the harvester on the left with a fragment of powered support; in FIG. 4 - section BB in figure 2 (rotated), shows the location of the parts of the feed mechanism relative to the conveyor in height; figure 5 is a section bb in figure 1, shows the location of the parts of the feed mechanism relative to the conveyor in plan.

The shearer (see Figs. 1, 2 and 3) consists of the main body 1 and two rotary cutting units 2 and 3 pivotally connected to it, built-in feed mechanisms, each of which consists of two parts - a high-speed part (feed drive) 4 and 5, low speed (power block

feed) 6 and 7, portal 8, the Combine is interconnected with the conveyor 9, on the zavalny side 10 of which is placed the spreader bar 11. High-speed parts 4 and 5 of the built-in feeding mechanisms are located in the main body 1 from the bottom side 12 of the conveyor 9, and the low-speed parts 6 and 7, are placed in the portal 8 on the obstruction side 10 of the conveyor 9. In this case, the high-speed and low-speed parts are connected to each other by transmission shafts 13 (see Figs. 4 and 5) located in the portal 8.

Traction wheels 14, located in the low-speed parts 6 and 7 of the built-in feeding mechanisms, are placed beyond the obstruction side 10 of the conveyor 9 and are engaged with the pin bar 11, which is fixed on the same side of the conveyor approximately at the level of the upper shelf 15.

The cutting units 2 and 3 are installed with a gap relative to the bottom side 12 of the conveyor 9 with the possibility of lowering them below the upper shelf of the conveyor 15.

The implementation of the utility model is as follows.

During the operation of the combine, the cutting units 2 and 3, installed with a gap relative to the bottom side 12 of the conveyor 9, can fall below the upper shelf 15 of the conveyor, allowing the combine to fit into a thinner layer with a smaller screw diameter.

The feed movement of the combine is due to the fact that the rotation from the high-speed parts 4 and 5 of the built-in feed mechanism, located in the main body from the bottom side 12 of the conveyor 9, is transmitted through the transmission shafts 13 to the low-speed parts 6 and 7, located in the portal 8 from the block side 10 conveyor 9 (see Fig. 4). The traction wheels 14 driven into rotation, placed on the obstructed side 10 of the conveyor 9, are driven around on the pin bar 11 (see Figs. 4 and 5) installed approximately at the level of the upper shelf 15, moving the combine along the conveyor.

loads of coal on the conveyor are in favorable conditions for work, due to which, the reliability of the built-in feeding mechanisms as a whole is increased (see Figs. 3, 4 and 5).

Deputy Direct

O.V. Olkhovsky

Claims (2)

1. Shearer for thin seams, comprising a main body with rotary cutting units mounted on its ends, built-in feed mechanisms with traction wheels and a portal, while the combine is interconnected with a conveyor that has upper shelves, bottom and bottom sides, a pin rail, installed with the possibility of engagement with traction wheels, and the portal is located above the conveyor, characterized in that there is a gap between the rotary cutting units and the bottom face of the conveyor, and the rotary cutting units are installed with the possibility of lowering them below the upper shelf of the conveyor, as well as the fact that each built-in feeding mechanism is made of two parts connected to each other, connected by transmission shafts located in the portal, one of which is high-speed, located in the main body of the combine from the bottom of the conveyor, and the other is low-speed, placed in the portal on the obstruction side of the conveyor and contains a traction wheel. 2. The shearer according to claim 1, characterized in that the spreader bar is installed approximately at the level of the upper shelf of the obstruction side of the conveyor.