RU2151092C1 - Line section of mechanized complex flight conveyer - Google Patents

Abstract

FIELD: mining industry; face flight conveyers. SUBSTANCE: line section of flight conveyer had frame with facing and charging side members and with upper and lower sheets rigidly secured between side members. Inserted chute is installed on upper sheet between side members. Chute consists of bottom and two angle plates. Height of vertical web of each angle plate serving as chute side wall is less than height of chute, and it changes into other web made inclined and adjoining chute bottom. Facing and charging side members of frame are furnished with rigidly secured pressure plates. Pressure plates are installed for engagement with upper end face of corresponding vertical web of chute side wall, forming with each guide channels for conveyer pulling member. Pressure plates are made wedge - shaped on part of length pointed to chute and provided, together with angle plates,

Description

 The invention relates to the mining industry, and in particular to downhole scraper conveyors used in mechanized complexes of face equipment in the development of stratified mineral deposits by underground mining.

 Known scraper conveyor, including the head and end drives, scraper chain and becoming with loose pans with shelves and frame sections. Section frames have lock cases fixed on the sidewalls of sections from their obstructed and downhole sides. Due to the displacement of the external ends of the lock cases, fixed on the bottom side of the sections, relative to the external ends of the lock cases, fixed on the slab side of the sections, a gap is created that allows rotation of one frame relative to another plane of the formation. Inserted pans are laid in the frames of the sections and rigidly connected to it. Between the bottomhole and blocking sidewalls are the upper and lower sheets of the frame (1).

 A disadvantage of the known solution is the lack of coordination between the design of the insert pan and the properties of the transported material (lumpiness, the presence of impurities in coals, their strength, viscosity, etc.), and this reduces the efficiency of the scraper conveyor when the mining and geological conditions of the working faces and physico-mechanical reservoir properties.

 In addition, the presence of an insert pan of the upper shelves complicates the technology of its manufacture.

 A linear section of the scraper conveyor of a mechanized complex is known, including a frame with a blocking and bottomhole sidewalls and with an upper and lower sheet located between the sidewalls and an insert pan installed on the top sheet of the frame between its sidewalls, which has an open cross-section contour and is rigidly connected to the frame, and the bottomhole the sidewall of the frame is made with a clamping plate fixed on it by means of a detachable connection, which has a supporting surface for a mining combine, and the block sidewall p Amma is made with a bracket attached to it by means of a detachable connection with a clamping bar, while the insert pan is made in the form of two symmetrically arranged squares and rigidly connected to the squares of the bottom, the thickness of which is less than the thickness of the shelves of the squares. The lower surfaces of the bottom and the shelves of the angles of the insertion pan are located in the same plane, and the pressure plate and the pressure bar are installed with the possibility of interaction with the upper end of the corresponding angle to limit the lifting up of the insertion pan and form guide channels with the corresponding angle of the insertion pan for the passage of the traction chain of the scraper conveyor.

 In case the linear sections of the conveyor are equipped with spreader rails (with a chainless feed system), the brackets are rigidly fixed to the side side of the sidewall, on which spreader rails and stops are fixed with fingers, the ends of which are rigidly connected by clamping bars (2).

 The known linear section, solving the problem of simplifying the shape of the insert pan, does not provide for the possibility of changing the cross-sectional area of its guide channels for the passage of the traction body of the scraper conveyor depending on the properties of the transported cargo (the presence of fractions, viscous and hard coals, etc.), which complicates the operation of the conveyor when using such a plug-in pan.

 The adopted layout of the elements of the plug-in pan is neither technological nor economical, since its installation is associated with labor costs both during assembly and when replacing failed elements with new ones.

In addition, the cross section of the guide channels for the passage of the chain $\genfrac{}{}{0ex}{}{\text{┌}}{\text{└}}$ - shaped shape contributes to the formation of a significant bayonet zone, which increases the energy consumption for moving the cargo in the guide channels, especially when transporting rock mass having high viscosity and fat content.

 Also, in this design of the linear section with a chainless feed system of the combine, a clamping block fixed on the end of the stop does not reliably fix the insert pan from moving upwards, since when the chain passes and the conveyor is loaded, the transported material has the ability to raise the block plate due to the clearance in the bracket-pin connection rail - finger. With repeated exposure and an increase in the gap in the connection node, the contact of the clamping plate with the insert pan is broken and, accordingly, the rigidity of its fastening in the conveyor frame is lost, which reduces the operability of the conveyor section.

 The noted disadvantages limit the operational capabilities of the linear section of the conveyor and do not allow it to be quickly and maximally adapted to the specific mining and geological conditions of the working face.

 The invention is aimed at solving the problem of expanding the operational capabilities of the scraper conveyor while simplifying the design of the insert pan as compared with the prototype without changing its functional purpose. The technical result that can be obtained by implementing the invention is to reduce the energy consumption of the process of transporting the broken rock mass by changing the geometric parameters of the guiding channels of the insert pan during the installation of the scraper conveyor, depending on the properties of the transported rock mass and the mining and geological conditions of the working face.

образную форму, угол встречи которой имеет переменную величину, зависящую от свойств транспортируемого материала, причем прижимная планка завальной боковины рамы имеет, как минимум, два выступа для крепления ее на завальной боковине с помощью крепежных элементов.The problem is solved in that in the linear section of the scraper conveyor of the mechanized complex, which includes a frame with a face and block sidewalls with clamping strips fixed to them and with upper and lower sheets located between the sidewalls and an insertion pan installed on the upper sheet of the frame between its sidewalls a contour of the cross section and consisting of a bottom and two symmetrically positioned squares, the vertical shelves of which serve as the side walls of the pan, and the pressure bars are installed they are capable of interacting with the upper end face of the corresponding vertical side wall of the insertion pan and form guide channels with each of them for the passage of the traction body of the scraper conveyor, according to the invention, the insertion pan is an integral structure, and each vertical shelf, which is the side wall of the pan smaller height than the height of the said pan, and goes into another shelf, made inclined, which, in turn, is adjacent to the bottom of this pan, and downhole gibs respective sidewalls of the frame portion of their length facing the open loop of the pan have a wedge-shaped profile, the inclined parts of which the part of the pan, together with lateral vertical walls with sloping shelves attach the guide channels for the passage of the traction body the scraper conveyor in cross section

a shaped shape, the meeting angle of which has a variable value depending on the properties of the transported material, and the clamping bar of the blocking sidewall of the frame has at least two protrusions for mounting it on the blocking sidewall using fasteners.

 Moreover, the length of the inclined part of the clamping strips in the transverse direction relative to the conveyor is changed in the direction of increase or decrease, depending on the relative position of adjacent sections in the plane of the reservoir.

 Compared with the prior art, the above set of essential features of the claimed invention will allow to create a reliable linear section with enhanced operational capabilities by changing (increasing or decreasing) the cross-sectional area of the guide channels, which reduce the formation of stagnant zones when moving broken rock mass along the conveyor, and also to create a design of an insert pan that is simple and technological in manufacture.

 The scraper conveyor section is known from the prior art, the insertion pan of which is located on the frame and is made with shelves and vertical walls conjugated to its bottom by means of inclined parts (3).

 The disadvantage of this section is the complexity of the manufacturing technology of a detachable pans of this profile in the conditions of ore-mining enterprises. In addition, the upper shelves of the insert pan during wear of the conveyor quickly wear out, which entails the replacement of the entire pan with a new one, and this in turn is associated with downtime of the conveyor.

 There is no possibility to change, if necessary, the cross-sectional area of the guide channels depending on the properties of the transported rock mass, to reliably hold the scrapers of the traction chain (traction body) from the exit from the guide channels of the pan, and also to increase the caliber of the chain of the traction body.

 The most desirable linear section embodiment is one in which the insert pan is structurally simpler, manufacturable, and has improved performance.

 In this regard, it is proposed that the insert pans be made in the form of an integral structure, and its lateral vertical shelves (walls) are smaller than the height of the pans so that the other shelf is inclined with its transition to the bottom, and the angle of conjugation of this shelf with the bottom is set during the manufacture of a pan to determine operating conditions depending on the properties of the transported rock mass (rock, coal, anthracite, etc.). With such a constructive implementation of the insert pan, a sufficiently fast replacement is ensured under operational conditions when it becomes necessary to change the height of the side walls and, accordingly, the angle of inclination of the other shelf so that the scraper conveyor can work in the modes set for it.

образную форму.Zavalnaya and bottomhole clamping strips on the part of their length, facing the open contour of the pan, have a wedge-shaped profile. The inclined parts of this profile are turned towards the pan and, together with the vertical side walls and the inclined planes of the shelves, are attached to the guide channel in cross section

shaped shape.

образной формы, образуемого двумя разъемными деталями, и обеспечить минимальные энергозатраты на перемещение горной массы по вкладным рештакам конкретного очистного забоя.With this embodiment, the design of the guide channels for the passage of the traction body of the scraper conveyor makes it possible to more rationally use their cross section by changing the angles of the profile

shaped, formed by two detachable parts, and to ensure minimal energy consumption for moving the rock mass through the insert chutes of a concrete working face.

 The proposed shape of the guide channels is most optimal, since the stagnant zones are negligible. This is confirmed by the profile diagrams Fig. 4.5 in the book of B.A. Eiderman "Regularities of the formation of cargo flow and energy costs on scraper conveyors." Publishing house "Nedra", Moscow, 1984, p. 79, one of which is closest to the proposed form of these guides.

 The proposed design of a plug-in pan allows you to quickly switch from one caliber of the traction chain to another without additional costs and expensive equipment. To do this, it is enough to change the height of the vertical side wall of the insert pan and the position of the upper sheet of the conveyor frame.

 Equipping the jammed clamping plate with at least two protrusions on the upper surface of the dammed sidewall will allow them to be rigidly connected to each other by means of fasteners and to ensure reliable fixation of the insert pan in the conveyor frame, eliminating the possibility of its vertical movement.

 In addition, in the event of a change in the relative position of adjacent linear sections in the plane of the reservoir, the length of the inclined portion of the pressure bars is increased or decreased in the direction transverse to the conveyor. So, when the conveyor bend is bent on parts of linear sections in the vertical plane, due to changes in the formation hypsometry, the length of the inclined part of the pressure bars is increased to prevent the traction member from leaving the guide channels, while ensuring a trouble-free operation of the conveyor.

 Thus, the set of essential features characterizing the essence of the invention makes it possible to adjust the geometric shape of the cross section of the insert pan depending on the operating conditions of the conveyor, the properties of the transported cargo and the required caliber of the chain of the traction unit, as well as simplify the technology of its manufacture. All this ensures the expansion of the operational capabilities of the scraper conveyor, increases the efficiency of its use and reliability.

 It follows that the essential features of the claimed invention are in a causal relationship with the achieved technical result and from the analysis of the prior art in this field are not explicitly obvious to a specialist, which characterizes the inventive step of the claimed technical solution.

 In FIG. 1 shows a linear section of a scraper conveyor, cross section; in FIG. 2 - connection zavalnogo clamping strips with zavalnoy sidewall of the conveyor frame; in FIG. 3 - a fragment of the guide channel of the insert pan

 The linear section of the scraper conveyor of the mechanized complex consists of a frame 1 with a bottomhole 2 and a heaped 3 sidewalls and with upper 4 and lower 5 sheets rigidly fixed between them. On the top sheet 4, between the sidewalls 2 and 3, there is an insertion pan 6 having an open cross-sectional contour.

 The insert pan 6 is an integral structure, which consists of a bottom 7 and two symmetrically arranged squares 8, the shelves of which 9 and 10 are conjugated to each other at an obtuse angle α. Moreover, each shelf 9 is vertical, is the side wall of the insert pan 6 and has a lower height than the height of this pan, and each shelf 10 of the square 8 is made inclined, into which the vertical shelf 9 passes. Limiters 11 are attached to the inclined shelves 10, which are included in grooves 12 made in the top sheet 4 and restricting the movement of the insert pan 6 in the longitudinal direction of the conveyor.

образную форму. Угол встречи

образной формы направляющих каналов 17 и 19 выбирают индивидуально для каждого выемочного столба в зависимости от свойств транспортируемой по рештакам 6 горной массы, таких как, например, фракционный состав, крепость, склонность к цементации. Корректировку его значения осуществляют при изготовлении путем изменения углов наклона к горизонтали наклонных частей 20 прижимных планок 13 и 14 и полок 10 вкладного рештака 6. Такая корректировка обеспечивает изменение формы поперечного сечения направляющих каналов 17 и 19 с тем, чтобы в процессе эксплуатации максимально снизить образование в них застойных зон и, соответственно, свести до минимума энергозатраты на перемещение грузового потока скребковым конвейером.Downhole sidewall 2 and dammed sidewall 3 of frame 1 are equipped with clamping bars 13 and 14, rigidly fixed to them by means of fasteners 15 and 16 and serving to fix from vertical movements of the bottomhole and blocking sides of the insert pan 6. The upper part of the surface of the clamping strip 13 from the side the face serves as a support for the mining combine, and its lower part on the opposite side interacts with the upper end of the vertical shelf 9 of the side wall of the pan 6 and forms with it the upper guide channel 17 for the passage of the face the upper branch of the traction body 18 of the scraper conveyor. The lower part of the surface of the clamping bar 14 interacts with the upper end of the vertical shelf 9 and forms with it the upper guide channel 19 for passing the obstructed side of the upper branch of the traction body 18. Moreover, the bottom-hole clamping bar 13 and the obstructed clamping bar 14 of the corresponding sidewalls 2 and 3 are part of their length facing the open contour of the pan 6, have a wedge-shaped profile, the inclined parts 20 of which from the side of the pan 6 together with squares 8 having vertical 9 and inclined 10 shelves give each guide th channel 17 and 19 for passage of the traction body 18 in cross section

shaped shape. Meeting angle

the shaped shapes of the guide channels 17 and 19 are selected individually for each extraction column, depending on the properties of the rock mass transported through the pans 6, such as, for example, fractional composition, strength, and tendency to cementation. The correction of its value is carried out in the manufacture by changing the angle of inclination to the horizontal of the inclined parts 20 of the clamping bars 13 and 14 and the shelves 10 of the insert pan 6. This adjustment provides a change in the shape of the cross section of the guide channels 17 and 19 so as to minimize the formation of stagnant zones and, accordingly, to minimize energy consumption for moving the cargo flow with a scraper conveyor.

 To ensure the rigidity of the connection of the jamming clamping plate 14 with its sidewall 3 in the strap 14, at least two protrusions 21 are made for fastening it to the blocking sidewall 3 with the help of strong elements 16.

 In the case of a change in the relative position of adjacent linear sections in the plane of the reservoir, the length l of the inclined portion 20 of the pressure bars 13 and 14 is increased or decreased in the direction transverse to the conveyor. So, when bending the conveyor stand on parts of linear sections in the vertical plane, due to changes in the formation hypsometry, the length l is increased to prevent the traction member from leaving the guide channels 17, 19, while ensuring a trouble-free operation of the conveyor.

 The linear section works as follows.

 When you turn on the conveyor, the upper cargo branch of the traction body 18 moves in the guide channels 17 and 19 of the pan 6, and its contact occurs on the inner surfaces of the inclined parts 20 of the strips 13, 14 and the inclined shelves 10 of the pan 6.

 Due to the fact that the insert pan 6 is made as a whole structure, its durability, compared with the prototype, is high, as well as its fairly quick replacement with other parameters in operating conditions when changing the properties of the transported cargo along pan 6. In addition, there is no need in overhaul maintenance. As a result of the fact that in the proposed design of the insert pan 6, in which each vertical shelf 9 of the square 8 has a lower height than the height of the pan 6, and goes into another shelf, made inclined, in the process of its manufacture, you can vary the height of each shelf, this allows you to expand the arsenal of technical means, i.e., scraper conveyors for moving broken rock from a specific working face in accordance with a given mode of operation.

образной формы. Для изменения площади поперечного сечения указанных направляющих в эксплуатационных условиях достаточно заменить прижимные планки 13 и 14 с другими углами наклона наклонных частей 20.The formation of cargo flow on the conveyor occurs with minimal energy consumption for its movement due to giving the guide channels 17 and 19 for the passage of the traction body 18

shaped. To change the cross-sectional area of these guides in operating conditions, it is enough to replace the clamping strips 13 and 14 with other angles of inclination of the inclined parts 20.

 From rising up, the insert pan 6 is held by means of fasteners 16, which rigidly fasten the block bar 14 with its sidewall 3.

 The use of the invention will simplify the manufacturability of the insert pan with the simultaneous expansion of the operational capabilities of the scraper conveyor by changing the geometric parameters of the guide channels for the passage of the traction body formed by detachable parts, depending on the specific operating conditions of the conveyor and taking into account the properties of the transported cargo.

Sources of information taken into account when drawing up the description of the invention:
1. Copyright certificate of the USSR N 876524, cl. B 65 G 19/28, 1978.

 2. Patent of the Russian Federation N 2041148, cl. B 65 G 19/28, 1993 - (prototype).

 3. Copyright certificate of the USSR N 1632886, cl. B 65 G 19/28, 1988.

Claims (2)

1. The linear section of the scraper conveyor of the mechanized complex, including a frame with a face and block sidewalls with clamping strips fixed to them and with upper and lower sheets between the sidewalls and an insert pan installed on the top sheet of the frame between its sidewalls, having an open cross-section contour and consisting from the bottom and two symmetrically arranged angles, the vertical shelves of which serve as the side walls of the pan, and the clamping strips are installed with the possibility of interaction with the upper end of the corresponding vertical side wall of the insert pan and with each of them form guide channels for the passage of the traction body of the scraper conveyor, characterized in that the insert pan is an integral structure, and each vertical shelf, which is the side wall of the pan, has a lower height than the height of the said pan and goes into another shelf, made inclined, which, in turn, is adjacent to the bottom of the pan, while zavalnaya and downhole clamping strips respectively of the sidewalls of the frame, on the part of their length facing the open contour of the pan, have a wedge-shaped profile, the inclined parts of which on the side of the pan, together with the side vertical walls with inclined shelves, give guide channels for the passage of the traction body of the scraper conveyor in cross section

a shaped shape, the meeting angle of which has a variable value depending on the properties of the transported material, and the clamping bar of the blocking sidewall of the frame has at least two protrusions for mounting it on the blocking sidewall using fasteners.  2. The linear section of the scraper conveyor according to claim 1, characterized in that the length of the inclined portion of the clamping strips in the transverse direction relative to the conveyor is changed in the direction of increase or decrease depending on the relative position of adjacent sections in the plane of the reservoir.

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