Belt conveyor with increased angle of inclination

FIELD: transportation.

SUBSTANCE: belt conveyor comprises the main and additional belts. On external surface of additional belt there are cross planks fixed. Pins are welded to planks with the possibility of their interaction with transported cargo placed on weight-bearing strand of conveyor belt. Drive of additional belt is arranged in the form of cone belt gear that connects head drum of additional belt and declining drum installed near driving drum of conveyor belt. In zone of conveyor belt non-working strand lapping from mentioned declining drum, reverse drum is installed inside circuit of conveyor belt.

EFFECT: simplified design of conveyor, reduced metal intensity and energy intensity of loose cargo transportation, increased reliability of conveyor operation at angle of conveyor inclination up to 30-35 degrees.

5 cl, 6 dwg

 

The invention relates to konveyerostroeniya, namely, inclined belt conveyors, conveyor for lifting bulk cargoes at the angles of inclination of the conveyor to 30-35 degrees.

Known belt conveyor with increased tilt angle (prototype)containing infinitely closed on the driving shaft and the tension and deflection drums conveyor belt with the formation of load-bearing and non-working branches, roller supports for the tape, placed over the load-carrying branch tape indefinitely closed end drums additional drive tape interoperable its lower branches placed on the load-carrying branches tape transported cargo, fixed on the frame of the conveyor and placed over the lower branch of the additional strip with the opportunity to interact with the clamping device as mounted on the axes of the rollers with the possibility of rotation and displacement in the vertical plane, loading and unloading the fixtures. The angle of inclination of the conveyor can be 60-70 degrees (Polunin V.T., Gulenko GN. Conveyors for mining enterprises. M.: Nedra, 1978, s-222, RIS).

However, the disadvantages of the known conveyor are the complexity of the design, which is impractical at smaller angles of inclination of the conveyor, heavy wear of the lower (pressure) additional branches of the tape when it is inter who astii with a rough surface flow of the transported goods, caused by the presence of lumps, abnormal wear rings and bearings of the rollers clamping devices increased energy transportation due to increased resistance to movement of the two conveyor paths and additional tapes when interacting pressed to the transported cargo by means of a stationary clamping the lower branches of the additional strip with exposed up large pieces of cargo being transported, placed on the load-carrying branch of the conveyor belt.

The technical result of the invention is to simplify and cheapen the construction of the pipeline, reducing the metal pipeline and energy transportation of bulk cargo, increasing the reliability of operation of the conveyor when the angle of its inclination to the horizon to 30-35 degrees.

The technical result is achieved in that in the conveyor belt with a larger angle of inclination, containing infinitely closed on the driving shaft and the end of the reel conveyor belt with the formation of load-bearing and non-working branches, roller supports for the tape loading and unloading device placed over the load-carrying branch tape on the ends of the drums indefinitely closed additional drive tape interoperable its lower branches placed on the load-carrying branches tape transported GRU is om, according to the invention on the outer surface of the additional strip with the same step length loop fastened straps oriented in transverse relation to the direction and placed with a gap relative to each other symmetrically to the longitudinal axis of extra tape, and welded to laths normally oriented to their surfaces pins with the possibility of their interaction with placed on the load-carrying branch of the conveyor belt transported cargo, the drive for more tapes made in the form of V-belt transmission connecting the head drum for more tapes and deflecting drum, located on the drive pulley of a conveyor belt, in the area of escape outside branches of a conveyor belt with said deflecting drum inside the path of a conveyor belt provided with reverse drum. Each pin can be made in the form of a plate of rectangular cross-section, the plane of which is oriented along the longitudinal axis of extra tape. Each pin can be configured as a rod of round cross-section. The number of slats in the number may be two, placing them side flanges additional tapes or three, by placing the third plank in the middle part of the additional tape. Each rod to a strap and strap for additional tape is there to be attached with the push nuts with the possibility of an interaction with a screw threaded adjacent to the additional tape part of the rod, which is designed with countersunk head and a reduced diameter its nenalezena part.

Belt conveyor is presented in figure 1, a side view, figure 2 a section a - a in figure 1 for carrying branches of the main conveyor belt in the presence of an additional tape two strips, figure 3 is the same when there are three bars in figure 4 - side view of the on site installation of probes in the form of flat plates, figure 5 is the same when performing the pins in the form of rods, figure 6 - alternative mounting rods to the placket and placket for extra tape.

Belt conveyor with increased angle contains infinitely closed on the driving shaft 1, idler 2 and the deflecting drums 3 and 4, the conveyor belt from the load-carrying branch 5 based on roller bearings 6, and outside the branch 7 with its bearing on the roller 8, the boot 9 and unloading 10 devices. Over load-carrying branch 5 conveyor belt placed indefinitely closed on the head and stretch the reels 11 and 12 additional tape interoperable its lower branches 13 placed on the load-carrying branch 5 conveyor belt transported the load 14 and bearing its upper branches 15 to direct the roller 16. When this tension drum 12 additional tape is placed with the excess over the surface carrying the branches 5 of the conveyor belt.

On the outer surface additionally the tape with the same pitch l along the length of the loop is fixed with rivets strap 17, oriented in transverse relation to the direction and placed with gaps 18 relative to each other symmetrically to the longitudinal axis 19 of the tape. To the strips 17 are welded properly oriented to their surfaces, the pins 20 with the possibility of their interaction with placed on the load-carrying branch 5 conveyor belt transported the load 14. On each strip 17 is placed one or two pin 20.

Drive additional tape 13, 15 are made in the form of V-belt drive 21, which connects the head drum 11 additional tape and deflecting drum 3, located on the drive pulley 1 a conveyor belt. In the area of the escape off the branches 7 of the conveyor belt with the deflecting drum 3 inside the path of a conveyor belt provided with reverse drum 22.

Each pin 20 (figure 2 and 3) may be made in the form of a plate 23 of rectangular cross-section (figure 4), the plane of which is oriented along the longitudinal axis 19 of the tape. Each pin can be configured as a rod 24 (figure 5) round cross-section. The number of strips 17 in the series can be two, placing them side flanges additional tapes or three, with the placement of the third strap 17 in the middle part of the additional tape.

Each rod 24 to a strap and strap 17 to the additional tape can be attached (6) with pomodorini nut 25 with the possibility of an interaction with a screw thread 26 in adjacent to an additional belt portion of the rod 24, which is made flat head 27 and its reduced diameter nenalezena part 28.

The width of the additional tape 13, 15 can be accepted less than the width of a conveyor belt 5, 7. β is the angle of inclination of the conveyor. 29 - the direction of movement of the carrying branches 5 of the conveyor belt.

The conveyor operates in the following manner. Subject to the transportation of the load 14 through the boot device 9 is fed to the load-carrying branch 5 of the main ribbon. Together with the main ribbon from deflecting drum 3 through V-belt 19 receives the rotation of the head drum 11 and the translational movement and the contour of the additional tape 13, 15. When the movement of the carrying branches 5 of the main belt and the lower branches of the 13 additional tape in the direction 29 of the transported load 14 on the inclined section of the conveyor is placed between the load-carrying branch 5 of the main belt and the lower branch 13 additional tape. When increased angle β of inclination of the conveyor belt from slipping down the transported load 14 is held by friction between its surface and the lower branch 13 additional tape due to its pressing its own weight together with the weight of the bars 17 with the pins 20 and to a greater extent due to the formation of barriers in the form of pins 20, which directly interact with the pieces transported cargo 14, with which I creep down. And held by the pins 20 pieces of transported cargo 14, in turn, interact with lower-placed pieces as due to friction and due to the natural coupling pieces together. The implementation of the slats 17 double or triple with placing them with clearances 18 relative to each other can increase the effect of the capture of the upper layer of the transported goods 14 due to the natural bending down the edges of the lower branches 13 additional tape under the action of its weight and the weight of the bars 17 with the pins 20.

However, due to the fact that the lower branch 13 additional tapes are not strictly fixed in the vertical plane (clamping rollers, as in the device-prototype), excludes the possibility of backwater and carrying branches 5 conveyor belt from above when transported by pipeline General cargo 14, wherein the longitudinal profile of the upper edge of the transported cargo 14 is characterized by the protrusions and depressions of considerable size. This lowers the energy transportation and increases its reliability due to the fact that the lower branch 13 additional tape free is located on the surface of the transported cargo 14, and holding his pieces from rolling down when increased angle β of inclination of the conveyor backwater occurs when pieces of the pins 20. When the pins 20 are also races alagaesia with the possibility of their displacement, together with the lower branch 13 additional tape in a vertical plane depending on the longitudinal profile of the upper edge of the transported goods 14.

The implementation of drive additional tape from the deflecting drum 3 of a conveyor belt using belt transmission 21 simplifies the drive system, and the installation of the reverse drum 22 allows to increase the transfer head drum 11 additional tape torque.

Features of the invention can simplify and reduce the cost of construction of the pipeline, to reduce the total metal content pipeline and energy transportation of bulk cargo, to improve the reliability of operation of the conveyor when the angle of slope β to 30-35 degrees.

1. Belt conveyor with a larger angle of inclination, containing infinitely closed on the driving shaft and the end of the reel bulk tape with the formation of load-bearing and non-working branches, roller supports for the tape loading and unloading device placed over the load-carrying branch tape on the ends of the drums indefinitely closed additional drive tape interoperable its lower branches placed on the load-carrying branches tape transported cargo, characterized in that on the outer surface of the additional strip with the same step length loop fastened straps oriented in transverse relation to the direction and placed with a gap relative to each other symmetrically to the longitudinal axis updat the enforcement tape, and to laths welded properly oriented to their surfaces pins with the possibility of their interaction with placed on the load-carrying branch of the conveyor belt transported cargo, the drive for more tapes made in the form of V-belt transmission connecting the head drum for more tapes and deflecting drum, located on the drive pulley of a conveyor belt, in the area of escape outside branches of a conveyor belt with said deflecting drum inside the path of a conveyor belt provided with reverse drum.

2. The conveyor according to claim 1, characterized in that each pin is made in the form of a plate of rectangular cross-section, the plane of which is oriented along the longitudinal axis of the additional tape.

3. The conveyor according to claim 1, characterized in that each pin is made in the form of a rod of round cross section.

4. The conveyor according to claim 1, characterized in that the number of slats in series two by placing them side flanges additional ribbons or three-hosted the third plank in the middle part of the additional tape.

5. The conveyor according to claim 3, characterized in that each rod to a strap and strap additional strap with push nuts with the possibility of an interaction with a screw threaded adjacent to the additional tape part of the rod, the cat is who performed with countersunk head and a reduced diameter its nenalezena part.



 

Same patents:

FIELD: transportation.

SUBSTANCE: belt conveyor comprises main and additional belts. On external surface of additional belt there are transverse accessories fixed in the form of doubled thrusts installed with clearances with gap relative to each other with the possibility of their interaction with transported cargo placed on weight-bearing strand of the main belt. Drive of additional belt is arranged in the form of cone belt gear that connects head drum of additional belt and declining drum installed near driving drum of conveyor belt. In zone of conveyor belt non-working strand lapping from mentioned declining drum, reverse drum is installed inside circuit of conveyor belt.

EFFECT: simplified design of conveyor, reduced metal intensity and energy intensity of loose cargo transportation, increased reliability of conveyor operation at angle of conveyor inclination up to 30-35 degrees.

5 cl, 5 dwg

FIELD: mechanics.

SUBSTANCE: inclined belt conveyor consists of the main and additional belt. Lower flight (9) of the additional belt has longitudinal near-zero tension. Movement of upper flight of the additional belt along the supporting devices is provided at non-negative resistance of its movement. Drive drum of the additional belt is located in the conveyor lower part immediately after loading device (11) in the direction of movement of load-carrying flight of the main belt, under it there located on parallel axis (16) and kinematically connected thereto is cylindrical roller (17) installed with the possibility of being held down to the flight of the additional belt, which runs off the drum, and fixed in this position. Kinematic connection is made in the form of drum shells fixed on side edges and roller of rings that are frictionally interrelated to each other. Mechanism of holding the roller down to the drum is made in the form of two screw pairs (20) installed with the possibility of shifting the housings of bearings (23) of roller relative to a fixed vertical post whereon there fixed are bearings of drive drum of the additional belt.

EFFECT: simplifying the conveyor design, improving life time of the main and additional belts, reducing consumption of energy required for transportation, and improving conveyor operating reliability.

5 cl, 4 dwg

FIELD: mechanics.

SUBSTANCE: inclined belt conveyor consists of the main and additional belt. Lower flight (9) of the additional belt has longitudinal near-zero tension. Movement of upper flight of the additional belt along the supporting devices is provided at non-negative resistance of its movement. Drive drum of the additional belt is located in the conveyor lower part immediately after loading device (11) in the direction of movement of load-carrying flight of the main belt, under it there located on parallel axis (16) and kinematically connected thereto is cylindrical roller (17) installed with the possibility of being held down to the flight of the additional belt, which runs off the drum, and fixed in this position. Kinematic connection is made in the form of drum shells fixed on side edges and roller of rings that are frictionally interrelated to each other. Mechanism of holding the roller down to the drum is made in the form of two screw pairs (20) installed with the possibility of shifting housings of bearings (23) of roller relative to a fixed vertical post whereon there fixed are bearings of drive drum of the additional belt. Hold-down devices are made in the form of loops (25) made from round-link chains and suspended to frame (24). Distance between suspension points of each loop to the frame is more than width of the additional belt.

EFFECT: simplifying the conveyor design, improving life time of the main and additional belts, reducing consumption of energy required for transportation, and improving conveyor operating reliability.

5 cl, 5 dwg

FIELD: mining.

SUBSTANCE: invention refers to mining and can be implemented at open excavating of mineral deposits in form of edge and inclined ore bodies of high and low thickness and also in form of veins. The method consists in dividing overburden and ore body into zones along vertical. Inclined, steeply inclined and vertical sections of borders are made in zones and are secured in deep zones at pit completion; as excavating of mineral advances in the first zone, in place of termination of rational implementation of vehicle, a conveyor installation is assembled on border of the pit in form of bearing and clamping bands with variable steepness of incline corresponding to equistable angle of border incline; frictional drums of the conveyor installations and a pulling body of a hoist engine are used as pulling members; the hoist engine is installed on the surface, which facilitates adding steep inclined and vertical blocks of the conveyor installation as excavation of mineral in the second, third and successive zones advances. For this purpose platforms are made in side zones of the pit, whereon crushers are installed and a receiving section of the conveyor stand is mounted; periodically they are displaced when excavation of the next stage commences and steepness of the stand is increased. Also, to facilitate adequate uniform maintaining load of lumps of ore (rock) on an apron at the height of the stand stoppers are arranged on a rubberised band; the stoppers are made in form of elevations out of the same material and of a strip shape, expanding at the base to suppress shearing load of lumps.

EFFECT: increased efficiency of operation at transporting and delivery of excavated mass to surface.

1 ex, 12 dwg

FIELD: mining, particularly for underground mining of steeply-dipping and inclined ore bodies having low and high thickness, as well as streaks.

SUBSTANCE: method involves separating stages and substeps in pit side slope; constructing deep pit with steeply-dipping side slopes in hanging and lying ore deposit walls, wherein side slope direction vary up to vertical direction at final stage; cutting zones in upper horizons and constructing the first continuous transportation path made as conveyer lifting means in trenches as pit is excavated; moving upper conveyer lifting means to new pit side point of upper stage when shifting to other mining stages at central and deep horizons and constructing conveyer system in trench located in central horizon; mounting conveyer lifting means at vertical side slope reinforced with polymers, bolts and mesh along with deep horizon excavation so that curvature of formed stable side sections correspond to surface and path of continuous ore and capping rock transportation from lower horizons to upper ones, wherein increasing shear loads in material to be transported are accommodated in conveyer structure by control of pull system and pressing means of tape drive mechanism. Device for said method realization is also disclosed.

EFFECT: increased operational efficiency, decreased costs of ore and capping rock delivery from deep pit.

2 cl, 1 ex, 10 dwg

The invention relates to hoisting and transport machinery, namely, conveyors for vertical and steeply inclined transportation of bulk materials

The invention relates to hoisting and transport machinery, namely, conveyors for vertical and steeply inclined transportation of bulk materials

The invention relates to the mining industry for the transportation of rock mass in mining operations open pit and underground

The invention relates to hoisting and transport machinery, namely, conveyors for vertical and steeply inclined transportation of bulk materials

FIELD: mining, particularly for underground mining of steeply-dipping and inclined ore bodies having low and high thickness, as well as streaks.

SUBSTANCE: method involves separating stages and substeps in pit side slope; constructing deep pit with steeply-dipping side slopes in hanging and lying ore deposit walls, wherein side slope direction vary up to vertical direction at final stage; cutting zones in upper horizons and constructing the first continuous transportation path made as conveyer lifting means in trenches as pit is excavated; moving upper conveyer lifting means to new pit side point of upper stage when shifting to other mining stages at central and deep horizons and constructing conveyer system in trench located in central horizon; mounting conveyer lifting means at vertical side slope reinforced with polymers, bolts and mesh along with deep horizon excavation so that curvature of formed stable side sections correspond to surface and path of continuous ore and capping rock transportation from lower horizons to upper ones, wherein increasing shear loads in material to be transported are accommodated in conveyer structure by control of pull system and pressing means of tape drive mechanism. Device for said method realization is also disclosed.

EFFECT: increased operational efficiency, decreased costs of ore and capping rock delivery from deep pit.

2 cl, 1 ex, 10 dwg

FIELD: mining.

SUBSTANCE: invention refers to mining and can be implemented at open excavating of mineral deposits in form of edge and inclined ore bodies of high and low thickness and also in form of veins. The method consists in dividing overburden and ore body into zones along vertical. Inclined, steeply inclined and vertical sections of borders are made in zones and are secured in deep zones at pit completion; as excavating of mineral advances in the first zone, in place of termination of rational implementation of vehicle, a conveyor installation is assembled on border of the pit in form of bearing and clamping bands with variable steepness of incline corresponding to equistable angle of border incline; frictional drums of the conveyor installations and a pulling body of a hoist engine are used as pulling members; the hoist engine is installed on the surface, which facilitates adding steep inclined and vertical blocks of the conveyor installation as excavation of mineral in the second, third and successive zones advances. For this purpose platforms are made in side zones of the pit, whereon crushers are installed and a receiving section of the conveyor stand is mounted; periodically they are displaced when excavation of the next stage commences and steepness of the stand is increased. Also, to facilitate adequate uniform maintaining load of lumps of ore (rock) on an apron at the height of the stand stoppers are arranged on a rubberised band; the stoppers are made in form of elevations out of the same material and of a strip shape, expanding at the base to suppress shearing load of lumps.

EFFECT: increased efficiency of operation at transporting and delivery of excavated mass to surface.

1 ex, 12 dwg

FIELD: mechanics.

SUBSTANCE: inclined belt conveyor consists of the main and additional belt. Lower flight (9) of the additional belt has longitudinal near-zero tension. Movement of upper flight of the additional belt along the supporting devices is provided at non-negative resistance of its movement. Drive drum of the additional belt is located in the conveyor lower part immediately after loading device (11) in the direction of movement of load-carrying flight of the main belt, under it there located on parallel axis (16) and kinematically connected thereto is cylindrical roller (17) installed with the possibility of being held down to the flight of the additional belt, which runs off the drum, and fixed in this position. Kinematic connection is made in the form of drum shells fixed on side edges and roller of rings that are frictionally interrelated to each other. Mechanism of holding the roller down to the drum is made in the form of two screw pairs (20) installed with the possibility of shifting housings of bearings (23) of roller relative to a fixed vertical post whereon there fixed are bearings of drive drum of the additional belt. Hold-down devices are made in the form of loops (25) made from round-link chains and suspended to frame (24). Distance between suspension points of each loop to the frame is more than width of the additional belt.

EFFECT: simplifying the conveyor design, improving life time of the main and additional belts, reducing consumption of energy required for transportation, and improving conveyor operating reliability.

5 cl, 5 dwg

FIELD: mechanics.

SUBSTANCE: inclined belt conveyor consists of the main and additional belt. Lower flight (9) of the additional belt has longitudinal near-zero tension. Movement of upper flight of the additional belt along the supporting devices is provided at non-negative resistance of its movement. Drive drum of the additional belt is located in the conveyor lower part immediately after loading device (11) in the direction of movement of load-carrying flight of the main belt, under it there located on parallel axis (16) and kinematically connected thereto is cylindrical roller (17) installed with the possibility of being held down to the flight of the additional belt, which runs off the drum, and fixed in this position. Kinematic connection is made in the form of drum shells fixed on side edges and roller of rings that are frictionally interrelated to each other. Mechanism of holding the roller down to the drum is made in the form of two screw pairs (20) installed with the possibility of shifting the housings of bearings (23) of roller relative to a fixed vertical post whereon there fixed are bearings of drive drum of the additional belt.

EFFECT: simplifying the conveyor design, improving life time of the main and additional belts, reducing consumption of energy required for transportation, and improving conveyor operating reliability.

5 cl, 4 dwg

FIELD: transportation.

SUBSTANCE: belt conveyor comprises main and additional belts. On external surface of additional belt there are transverse accessories fixed in the form of doubled thrusts installed with clearances with gap relative to each other with the possibility of their interaction with transported cargo placed on weight-bearing strand of the main belt. Drive of additional belt is arranged in the form of cone belt gear that connects head drum of additional belt and declining drum installed near driving drum of conveyor belt. In zone of conveyor belt non-working strand lapping from mentioned declining drum, reverse drum is installed inside circuit of conveyor belt.

EFFECT: simplified design of conveyor, reduced metal intensity and energy intensity of loose cargo transportation, increased reliability of conveyor operation at angle of conveyor inclination up to 30-35 degrees.

5 cl, 5 dwg

FIELD: transportation.

SUBSTANCE: belt conveyor comprises the main and additional belts. On external surface of additional belt there are cross planks fixed. Pins are welded to planks with the possibility of their interaction with transported cargo placed on weight-bearing strand of conveyor belt. Drive of additional belt is arranged in the form of cone belt gear that connects head drum of additional belt and declining drum installed near driving drum of conveyor belt. In zone of conveyor belt non-working strand lapping from mentioned declining drum, reverse drum is installed inside circuit of conveyor belt.

EFFECT: simplified design of conveyor, reduced metal intensity and energy intensity of loose cargo transportation, increased reliability of conveyor operation at angle of conveyor inclination up to 30-35 degrees.

5 cl, 6 dwg

FIELD: mining.

SUBSTANCE: procedure consists in establishing stages and sub-stages, in constructing deep pit under differentiated angles of border slopes in accordance with deteriorating natural and anthropogenic dislocation of massif rock with depth and in implementation of traditional transport. Overburden thickness of rock and ore body is divided along vertical into zones. In the zones there are constructed sloped, steeped and vertical sections of borders which are timbered in deep zones at open pit completion. Development of pay thickness of rock is begun with preparation and with running trenches for conveyor lines increasing their incline in deep zones. Also conveyor systems are applied in form of tubular ones divided into sections with retaining stops against weight of lumps and with cloth enveloping the said sections. Notably, on one side this cloth is equipped with fasteners of rectangular shape, while on the other side it is equipped with hooks entering the fasteners (loops), as a tubular shape of cloth is formed by means of a frame with rollers at initial, steep and vertical sections of the route. When the conveyor emerges to surface, hooks are disengaged by means of a facility in form of an inclined capstan coupled with the frame of the conveyor, pressing cloth with hooks down and disengaging the hooks. Further, rock (ore) is unloaded in a common mode of a running-off belt of the conveyor. Temporary (intermediate), regular and additional dumps are made on deposit sides in its hanging layer to provide optimal transport communication between stripping faces and places of storage of rock capping. Rock is transported along descents directed to contours of the pit of the II and III orders of development, first with transport facilities of cyclic operation (motor transport), and further with continuous transport. Also trenches with conveyors are directed to elongate conveyor elevators or to create a cascade system, when ore body thickness or angle of its pitch changes. When facilities of cyclic operation (motor transport) reach an ultimate run of transporting and the system does not function optimally, the conveyor elevators are immediately constructed in the zone of ore development. The route for conveyor elevators is laid to facilitate their elongation or operation in complex with the vertical elevators transporting ore to surface to a reloading point. Additionally, the last elevator in deep zones is constructed in such way, as to ensure run of transporting of assembled transport within limits of optimal functioning of the system. At a final stage of pit operation project angles of borders are corrected; the last layers (III stage of development) are worked out and borders are corrected to ultimate, differentiated by stability, final angles in a deep and super-deep pit.

EFFECT: raised efficiency of operations for excavation of capping and ore, reduced current coefficients of capping, reduced volume of capping in borders at their sloping under stable steep angles and construction of object for economic and military needs.

1 ex, 15 dwg

FIELD: transport.

SUBSTANCE: conveyor comprises belt 3 running over drive drum 1 and idler pulley 3, loading device 4 and hold-down loop 7 closed at drive drum 5 and idler pulley 6 with transverse webs secured thereat. Both flights of hold-down loop are arranged above load-bearing flight 3. Top flight of hold-down loop rests on straight roller carriages 9. Angle-section webs are articulated with hold-down loop belt. Part of every web oriented normally to the belt follows load-bearing flight profile formed by grooved roller carriages 11 and is arranged with clearance 12 above belt load-bearing flight working surface. Another part 13 of the web located parallel with hold-down loop belt is directed opposite load-bearing flight motion and hold-down loop flight. End 15 of said part is curved toward belt load-bearing flight.

EFFECT: decreased power consumption and load at conveyor belt, higher efficiency.

3 dwg

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