RU2574090C1 - Face scraper-type cutting conveyor - Google Patents

Abstract

FIELD: mining.

SUBSTANCE: claimed conveyor comprises end sections with drive sprockets, drawing chain member closed in horizontal plane with carrier scrapers secured thereat, working and idle troughs composed by the pan line. Note here that the latter is composed of dump and face pan lines articulated for adjustment of the face pan line position over the bed soil by means of hydraulic jack, and of scrapers with cutters at their ends arranged at sliding carriages with elongated support guides and with pull chains connected with the carriages on both sides from the thrust guide.

EFFECT: higher stability of the conveyor scrapers, easier mounting and adjustment of liner pan lines over the bed soil.

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Description

The invention relates to the mining industry, in particular to means of mechanization for transporting rock from the working faces.

Known horizontally closed scraper conveyor (copyright certificate SU No. 906839, publ. 02.23.1982), including horizontally located drive and bypass sprocket, covered by upper and lower traction chains, to which cantilevered scrapers are located on the working branch perpendicularly to the vertical axes chains and associated with the horizontal rail pans, and on the idle branch having deflecting rollers, the scrapers are parallel to the pull chains, the working branch pans in curved sections of the supply rows of rollers located on both sides relative to the horizontal guide, mounted on vertical axes with the possibility of interaction with the upper and lower chains, while the deflecting roller on the curved section of the idle branch is mounted on the pan with the possibility of interaction with scrapers.

The disadvantages are the imbalance of the load on the scrapers, the inability to control the bottomhole part of the linear section of the pans along the boundary “soil-layer”. Scrapers are not equipped with incisors and therefore do not level the soil.

Known downhole scraper conveyor (patent RU No. 2042593, publ. 08.27.1995), including working and idle chutes with working and idle branches of the traction body, consisting of upper and lower endless chains enveloping in pairs at different heights along to the ends of the sprocket gutters, the axis of rotation of which are parallel, traverses with longitudinal grooves mounted on the chains, cantilever scrapers pivotally mounted on the traverses by means of the axes, located in the working chute perpendicular to the traverses, and in the idle chute Along with the traverses, in order to increase the reliability of the conveyor, it is equipped with stops placed in the end parts of the gutter and stop elements attached to each traverse, and the scrapers are made with protrusions for interaction with the stop, and the stop element has the ability to interact with the free end of the scraper when moving it on the idle branch of the conveyor, while the distance between the axis of rotation of each pair of sprockets located at one end of the trough is equal to the distance between the attachment points of the tra vers to chains.

The disadvantages are the imbalance of the load on the scrapers, the inability to control the bottomhole part of the linear section of the pans along the boundary “soil-layer”. Scrapers are not equipped with incisors and therefore do not level the soil. The complexity of the design is due to the need for a large number of bypass stars (12 pcs.).

, где Δl - длина паза в траверсе; l - расстояние между осями крепления траверсы; D - диаметр звездочки.Known downhole scraper conveyor (patent RU No. 20149477, publ. 09/15/1994), including working and idle gutters, interacting with the stars installed at the ends of the gutters, and located at one side of the gutters endless traction chain mounted on it and pointing down axes by means of which cantilever scrapers with protrusions interacting with stops located at the ends of the grooves are attached to the chain with the possibility of rotation in the horizontal plane in order to increase the reliability of the conveyor due to the stable the position of the scrapers relative to the grooves, the traction body is equipped with traverses made with an opening at one end and a longitudinal groove at the other end and with an opening located at an obtuse angle relative to the groove, by means of which cantilever scrapers are provided with a hinge mounted to the traverses, provided with a groove made coaxial with the opening indicated in the traverse, made U-shaped, the ends of which are removed from the hole coaxial with the traverse at the same distance and are located relative to it at an angle of 90 °, one of the axes mounted on a chain is placed in the free hole of the traverse, and the other axis is located in the grooves of the scraper and the traverse, and the point located at the top of the U-shaped groove of the scraper is removed from its ends by a distance equal to the length of the grooves made in the traverses, the value of which is determined from the ratios of the traction parameters body and stars

where Δl is the length of the groove in the traverse; l is the distance between the axes of the mounting beam; D is the diameter of the sprocket.

The disadvantages are the unbalanced load on the scrapers, the complexity of their design, the instability of the position, since the conveyor is single-chain, the inability to regulate the bottomhole part of the linear section of the pan along the soil-layer boundary. Scrapers are not equipped with incisors and therefore do not level the soil.

Known angular scraper conveyor (copyright certificate SU No. 1666402, publ. 07/30/1991), including linear and angular sections with working grooves having sides, and an asterisk placed on the angular section to guide the working branch of a horizontally closed working body, made in the form a traction round link chain, centrally located at the bottoms of the gutters of the linear sections, and pivotally mounted cantilevered scrapers mounted on it, located respectively on the obstructed and downhole sides of the conveyor, in order to reduce energy consumption t and to increase the reliability of the conveyor, the working chute of the corner section is equipped with a guide for cantilever scrapers located on the obstruction side of the conveyor with a gap relative to its bottom and joined to the bottoms of the working chutes of the linear sections adjacent to the corner section, while the guide for cantilever scrapers is made symmetrically located relative to the bisector plane of the bending angle of the conveyor with a conical surface and two screw surfaces mating with it, and the side of the working channel of the corners th section disposed on the downhole side of the conveyor, is formed with a conical, coaxial with the sprocket surface and the sprocket placed in the gap between the guide console for Desktop scraper and the trough bottom corner section to cooperate with a traction chain of the round working body.

The disadvantages are the imbalance of the load on the scrapers, the instability of the position, since the conveyor is single-chain, the inability to regulate the bottomhole part of the linear section of the pans along the soil-layer boundary. Scrapers are not equipped with incisors and therefore do not level the soil. The complexity of the node connecting the scrapers with a chain, therefore, low reliability.

Known downhole scraper conveyor (patent RU No. 2349760 dated 11.10.2007), adopted for the prototype, containing a single-chain traction unit infinitely closed in the horizontal plane with scrapers attached to it, forming a load-bearing and non-working branch, drive and end sprockets with the possibility of their rotation, grating becoming for the load-bearing and non-working branches, the scrapers are placed symmetrically with respect to the single-chain traction body and with the possibility of rotation relative to it in a plane perpendicular to the longitudinal axis of the traction body, to Each scraper is placed on the horizontal link of the round link traction chain with the possibility of interaction of cuts of a cylindrical shape with straight sections of the bar forming the chain link on its half-diameter, the scraper is fixed on the outer part of the link with respect to the conveyor longitudinal axis with the possibility of turning the scraper relative to it , the grating in the areas adjacent to the drive and end sprockets is made with curved transitional sections with a transition from flat horizontal to to the glossy vertical arrangement directly in front of the sprockets, the outer edges of the scrapers from the side of the scaffold in the vertical plane are made curved with the possibility of their interaction with the curved surfaces of the transition sections of the scaffold, the scrapers in their middle part from the side of the scaffold are made with cutouts, while the height of the cut from the center horizontal link adopted more than half the width of the link, the removal of the side wall of the cut from the center of the outer relative to the longitudinal axis of the conveyor and the part of the horizontal link is equal to the height of the cut, and the second side wall of the cut is placed immediately outside the opposite part of the horizontal link, the width of the scrapers is assumed to be equal to the clearance between adjacent vertical links of the traction body with the possibility of interaction with them, and the length of the scrapers in the direction transverse to the axis of the traction body adopted with the possibility of their protrusion beyond the lateral edge of the tacking stand.

The disadvantages are the unstable position of the scrapers due to their fastening on a single-chain traction unit, the inability to regulate the bottomhole part of the linear section of the pans along the soil-layer boundary. Scrapers are not equipped with incisors and therefore do not level the soil.

The technical result of the invention is to ensure the stability of the position of the conveyor scrapers themselves, the implementation of soil leveling, ease of installation and the ability to regulate linear conveyor pans along the soil of the formation.

The technical result is achieved by the fact that the conveyor belt is made of block and bottom pans, articulated to each other with the possibility of adjusting the position of the bottom pitcher along the soil of the formation with a hydraulic jack and scrapers with cutters on their end parts mounted on sliding carriages with elongated support rails and with traction chains connected to the carriages on both sides of the support rail.

In FIG. 1 shows a General view of the bottomhole scraper cutting conveyor, where:

1 - the base of the lining section;

2 - overburden pan;

3 - supporting sheet;

4 - support stand;

5 - hydraulic jack;

6 - supporting lever downhole pan;

7 - supporting pin;

8 - downhole pan;

9 - a scraper;

10 - traction chains;

11 - supporting guide;

12 - sliding carriage;

13 - incisors.

The downhole scraper notch conveyor includes overburden pans 2 supported on the bases of the support section 1, a backing plate 3 that is attached to the support post 4 of the overflow pitcher 2, the support arm 6 of the downhole pitcher 8 is pivotally mounted to the base of the support post 4 of the overflow pitcher 2 using a support pin 7 and with the help of a hydraulic jack 5, the position of the bottom hole pitcher 8 is regulated on the soil of the formation on which the support guide 11 is located, along it using traction chains 10 the scrapers 9 are moved with a sliding aretkoy 12 and 13 cutters.

The device operates as follows. A scraper 9 with a traction chain 10 performs the function of transporting the destroyed mass, stripping, leveling the formation soil and cutting the face. The adjustment of the bottomhole pan in the soil of the formation is carried out using a hydraulic jack 5, which rotates the pan 8, and accordingly there is a deepening or exit of the lower cutter 13 into the soil of the formation. If the cutter 13 has deepened more than is required, then by applying pressure to the rod cavity of the hydraulic cylinder 5, the pan 8 can be raised or returned to its original position. Transportation of goods in a trolley and the movement of people can be carried out on the support sheets 3 of the left (blocking) pans 2, and the right (bottomhole) part of the conveyor stand, consisting of pans 8, is more affected by the load from cutting. To balance the scrapers 9 of the bottom of the chain 10 are located on two sides at the edges of the guide 11 and use extended guides in the sliding carriage 12. To increase the stability of the section of the mechanized roof support and the filling pan 2 of the conveyor, the lower supporting base 1 of the roof section can fit more or less under the body overburden pan of the face of the downhole scraper conveyor.

Claims (1)

Downhole scraper notch conveyor, including end sections with drive stars, traction chain organ closed in the horizontal plane with transporting scrapers fixed in them, working and idle troughs, made up of a tacking stand, characterized in that the conveyor tacking is made of blocking and bottomhole chutes connected pivotally with each other with the possibility of adjusting the position of the bottom hole pan in the soil of the formation with a hydraulic jack and scrapers with cutters on their end parts mounted on sliding carriages x with elongated guide support and the traction chains are connected to the carriages on either side of the bearing rail.

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