Ore chute gate.

FIELD: mining..

SUBSTANCE: invention refers to auxiliary transport equipment, particularly to gates and is designed mainly for shutting off outlet apertures of ore chutes in mines; it can be also implemented for outlet of lump loads from hoppers. The ore chute gate contains two cylinder bottoms installed under an outlet port secured on two cranks; the said bottoms are designed to rotate in vertical plane into opposite directions against horizontal axes. The axes are located on outer sides of vertical walls of a sleeve and parallel to them. The cylinder bottoms of cranks are arranged overhung with the length of arc corresponding to right angle; free ends of bottoms are directed inside the sleeve. Kinematical connection between cranks is made in form of additional cranks secured on axes. Free ends of cranks are connected with rods of two double-piston-rod actuating cylinders oriented horizontally and assembled with gaps relative to two other walls of the sleeve. In their initial position at an open gate the cranks are oriented horizontally, while the additional cranks form the angle of 45 degrees with the walls of the sleeve; the additional cranks are designed to interact after turn into the direction of the sleeve at the angle of 90 degrees with stops secured on the sleeve. A shield with two sloping surfaces is installed inside the sleeve at the level of axes and parallel to them; the said shield overlaps the end flanges of the cylinder bottoms in plane when the gate is closed and is oriented along the axis of sleeve symmetry. Free ends of the shield are arranged in slots of the side walls of the sleeve and are designed to set off the shield in vertical and horizontal planes. The shield is spring loaded towards brackets of the sleeve by means of a compression spring. At the ends of the shield there are installed unbalance vibrators; their axes are parallel to a lengthwise axis of the shield. Dimensions of the gate are chosen considering the following ratio R=0.5B+a, r<0.355[0.5(B-b)+a-c], where R is radius of the crank, m, r is radius of additional crank, m, B is the width of the outlet port of the sleeve, m, a is the distance between the axis and inside surface of the sleeve wall, m, b is total distance between piston rods and piston rods and end walls of the actuating cylinder for final positions of the piston rods, m, c is the height of the piston rod of the actuating cylinder, m. A replaceable component out of wear and shock resistant material is installed on top of the shield with two sloping surfaces.

EFFECT: increased reliability of operation at unloading oversize lumps through outlet port of ore chute, eliminating possibility of jamming of separate lumps of unloaded bulk between cylinder bottoms and supporting them cranks and avoiding doming.

2 cl, 5 dwg

 

The invention relates to auxiliary transport equipment, namely, valves, and is intended to be used primarily for blocking the outlet ore chutes for small - and Srednekanskaya cargo at mining enterprises, and can also be used for the production of bulk cargo bins.

Famous jaw shutter (prototype), which can be used for shutting off the discharge outlet of the ore passes that contains placed below the outlet of handling devices two crank in the form of sectors with fixed on them cylindrical bottoms, with the possibility of rotation in the vertical plane in opposite directions relative to installed on the pipe horizontal axes, and sector kinematically interconnected and supplied drive (Tarasov UD loading and unloading device of belt conveyors. M., Nedra, 1995, p.57-59, risb).

The disadvantages of the known shutter are limited by the size of the outlet opening, which can be blocked by a shutter, and the possibility of jamming of the separate pieces of the transported goods as between sectors, and the locking of the edges of their cylindrical ends.

The technical result of the invention is to improve the reliability of the shutter when the release chere is C outlet ore passes increased size and eliminating the possibility of jamming of the separate pieces of the product handled between the cylindrical heads and holding their cranks.

The technical result is achieved by the fact that the shutter for the ore passes that contains placed below the outlet two attached to the cranks of the cylindrical bottom with the possibility of rotation in the vertical plane in opposite directions about a horizontal axis, and the cranks kinematically interconnected and provided with a drive according to the invention the axis is placed with the outer sides of the vertical walls of the pipe and parallel to them, and a cylindrical bottom on the cranks fixed cantilever length of the arc corresponding direct angle with the direction of the free ends of the bottoms inside of the pipe, and the kinematic connection between the cranks are made in the form attached to the axes of additional cranks, the free ends of which are connected with two rods dvuhzonovyh power cylinders, oriented horizontally and placed with a gap relative to the other two walls of the pipe, in the initial position when the shutter is open the cranks oriented horizontally, additional cranks with the walls of the pipe form an angle of 45 degrees and placed with the possibility of their interaction after turning in the direction of the pipe at an angle of 90 degrees from the fixed to the pipe stops and inside the pipe at the level of the axis and parallel to them posted by gable peak overlapping in plan tor Evie edge of the cylindrical bottoms when the breechblock is closed and oriented along the axis of symmetry of the pipe, moreover, the free ends of the visor is placed in the slots in the side walls of the socket with the possibility of displacement of the visor in the vertical and horizontal planes, the visor is spring-loaded bracket to the pipe using compression springs, and at the ends of the visor installed unbalance vibrators with the location of their axes parallel to the longitudinal axis of the visor, and the parameters of shutter selected based on the following ratios

R=0,5B+a, r<0,355[0,5(B-b)+a-c]

where R is the radius of the crank, m, r is the radius of the additional crank, m, a width of the outlet pipe, m, and - remove the axis from the inner surface of the wall of the pipe, m, b is the total distance between the piston and the piston and the end wall of the power cylinder to the end positions of the piston, m, with the height of the piston of the power cylinder, m

On top of the gable canopy can be fixed removable element from abrasion and impact resistant material.

The shutter for the ore passes is shown in figure 1, a side view when the shutter is open, figure 2 is a vertical section with a closed shutter, figure 3 - section a-a of figure 1, figure 4 - cross-section B-B of figure 1, figure 5 - section b-over 3.

The shutter contains placed below the outlet 1 of 2 ore passes two mounted on the cranks 3 and 4 cylindrical bottoms 5 and 6 with the possibility of rotation in the vertical plane in opposite directions Rel is relatively horizontal axes 7 and 8. Axis 7 and 8 are placed with the outer sides of the vertical walls of the socket 9 and parallel to them. Cylindrical bottoms 5 and 6 on the cranks 3 and 4 fixed cantilever length of the arc corresponding right corner and the direction of the free ends of the end plates 5 and 6 to the inside of the pipe 9. The kinematic connection between the cranks 3 and 4 is made in the form attached to the axes 7 and 8 additional cranks 10 and 11. The free ends of the additional cranks 10 and 11 are connected with the rods 12 and 13 two dvuhzonovyh power cylinder 14. Dvuhstochenye power cylinders 14 is oriented horizontally and placed with a gap relative to the other two walls of the socket 9. In the initial position when the shutter is open the cranks 3 and 4 are oriented horizontally, and the secondary yokes 10 and 11 with the walls of the pipe 9 form an angle of α=45 degrees and placed with the possibility of their interaction after turning in the direction of the nozzle 9 at an angle of 90 degrees from the fixed to the pipe 9 by the stops 15 and 16. Inside the pipe 9 at the level of the axes 7 and 8 and in parallel they fixed saddle visor 17 (figure 2 and 3)overlapping in terms of the end edge of the cylindrical bottoms 5 and 6 when the breechblock is closed and oriented along the axis of symmetry 18 of the socket 9. The free ends of the visor 17 is placed in the slots 19 and 20 of the side walls of the nozzle 9 with the possibility of displacement of the visor 17 in the vertical and horizontal the planes. The visor 17 is spring-loaded to the brackets 21 and 22 of the nozzle 9 by means of compression springs 23 and 24. At the ends of the visor 17 is installed unbalance vibrators 25 and 26 with their axes parallel to the longitudinal axis of the visor 17. On top of the gable canopy 17 can be mounted replaceable element 27 of the wear - and impact-resistant material.

The cranks 3, 4 and cylindrical heads 5, 6 are made with ribs 28, 29 and 30, 31.

Settings shutter is selected based on the following ratios:

R=0,5B+a, r<0,355[0,5(B-b)+a-c]

where R is the radius of the crank, m, r is the radius of the additional crank, m, a width of the outlet pipe, m, and - remove the axis from the inner surface of the wall of the pipe, m, b is the total distance between the piston and the piston and the end wall of the power cylinder to the end positions of the piston, m, with the height of the piston of the power cylinder, m

For example, if V=1.2 m, a=0.05 m, b=0,09 m, C=0.05 m we find R=0.65 m, r<0,395 m (data are for a particular mine diamonds).

The shutter for the ore passes operates as follows. When the shutter is open the cranks 3 and 4 attached to them cylindrical bottoms 5 and 6 occupy a horizontal position. This position corresponds to the most advanced of the power cylinder 14 to the rods 12 and 13 with extra cranks 10 and 11 at an angle α=45 degrees to the vertical degree the Cam tube 9. Thanks to freely cargo is unloaded from the ore passes 2 through its discharge outlet 1. For closing the shutter and the overlap outlet 1 of 2 ore passes include the power cylinders 14. Their retractable rods 12 and 13 rotate in different directions for more cranks 10 and 11. When additional rotation of cranks 10 and 11 together with them turning axis 7 and 8, together with turn to a straight angle towards each other and secured to them the cranks 3 and 4 with cylindrical heads 5 and 6. Symmetric extension of the cylindrical bottoms 5 and 6 towards each other is ensured by the fact that the additional rotation of the cranks 10 and 11 is limited by the stops 15 and 16. In the position corresponding to the vertical location of the cranks 3 and 4, the rods 12 and 13 slide fully into the power cylinders 14 that off. Cylindrical bottoms 5 and 6, crossing the stream discharged from the ore passes 2 load their free edges, to this moment are under the gable visor 17, providing full coverage of the outlet 1 of 2 ore passes and stopping the release of his cargo.

Due to the fact that with the release of the cargo and in the course of the overlap outlet 1 discharged from the ore passes 2 the load is split into two streams saddle visor 17, significantly reduced resistance, ocas is by the cargo at its intersection cylindrical bottoms 5 and 6. Moreover, directly under the visor 17 is free from cargo area, eliminating the possibility of jamming of individual pieces of cargo between the cylindrical bottoms 5 and 6. In addition, due to the fact that the console attached to the cranks 3 and 4 cylindrical bottoms 5 and 6 in the process of crossing freight flows shift from minimum clearances relative to the fixed walls of the pipe 9, the resistance to their movement also reduced in comparison with the shutter prototype, because with the cargo interact only the front free edge of the cylindrical bottoms 5 and 6.

The presence of saddle peak 17 also reduces the load on the structural elements of the shutter in its closed position. Selections shutter allow for the given cross-sectional dimensions (In) pipe 9 to accommodate the actuators 14 of the respective dimensions, allowing in turn to block the pipe 9 is increased in size with a console mounted on the cranks 3 and 4 cylindrical bottoms 5 and 6 is also increased in size. Load (voltage) from the bending moments acting on the cranks 3 and 4 and the cylindrical bottoms 5 and 6, is reduced through the respective ribs 28, 29 and 30, 31.

The presence of the stops 15 and 16 eliminates the possibility of asymmetric with respect to the axis balanced and 18 of rotation of the cylindrical bottoms 5 and 6 with different resistance to their movement from the interaction of bulk cargo in the pipe 9.

Possible bridging of the goods in the outlet 1 of 2 ore passes is prevented by the inclusion of unbalance vibrators 25 and 26. By appropriate orientation of their axes and unbalanced type of vibrators the visor 17 reported fluctuations both in vertical and in horizontal planes, provided the destruction of the arch and the resumption of freight movement in ore passes.

Wear a visor 17 is prevented through the use of removable protective elements 27.

Features of the invention allow to increase the reliability of the gate with the release of the cargo from the outlet of the ore passes to the increased size and to eliminate the possibility of jamming of the separate pieces of the product handled between the cylindrical heads and holding their cranks, as well as to eliminate the possibility of arching.

1. The shutter for the ore passes that contains placed below the outlet two attached to the cranks of the cylindrical bottom with the possibility of rotation in the vertical plane in opposite directions relative to installed on the pipe horizontal axis, and the cranks kinematically interconnected and supplied with the actuator, wherein the axis is placed with the outer sides of the vertical walls of the pipe and parallel to them, and a cylindrical bottom on the crank is fixed console with arc-length, appropriate right corner and the direction of the free ends of the bottoms inside of the pipe, and the kinematic connection between the cranks are made in the form attached to the axes of additional cranks, the free ends of which are connected with two rods dvuhzonovyh power cylinders, oriented horizontally and placed with a gap relative to the other two walls of the pipe, in the initial position when the shutter is open the cranks are oriented horizontally, and the additional cranks with the walls of the pipe form an angle of 45° and posted with the possibility of their interaction after turning in the direction of the pipe at an angle of 90° attached to the pipe stops and inside the pipe at the level of the axis and parallel to them posted by gable peak overlap in terms of the end edge of the cylindrical bottoms when the breechblock is closed and oriented along the axis of symmetry of the pipe, and the free ends of the visor is placed in the slots in the side walls of the socket with the possibility of displacement of the visor in the vertical and horizontal planes, the visor is spring-loaded bracket to the pipe using compression springs, the ends of the visor installed unbalance vibrators with the location of their axes parallel to the longitudinal axis of the visor, and the parameters of shutter selected based on the following ratios:

R=0,5B+a, r<0,355 [0,5(B-b)+a-c]

where R is the crank radius, m;

r is the radius of the additional crank, m;

In - the width of the outlet pipe, m;

a - remove the axis from the inner surface of the wall of the pipe, m;

b - the total distance between the piston and the piston and the end wall of the power cylinder to the end positions of the piston, m;

with the height of the piston of the power cylinder, m

2. The shutter according to claim 1, characterized in that on top of the gable canopy fixed removable element from abrasion and impact resistant material.



 

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