Steeply inclined belt conveyor

 

(57) Abstract:

The invention relates to the mining industry for the transportation of rock mass in mining operations open pit and underground methods. Steeply inclined belt conveyor includes carrying and backing tape drives, transitional areas and steeply inclined section where you installed pressure modules. In these modules the side and middle rollers are accommodated separately, and the values of their bail efforts are set by the microprocessor depending on the specific conditions of operation of the conveyor is determined by the weight sensor material, its level on the conveyor and the speed sensor tapes. The choice of the stiffness of the tape in accordance with the proposed expression can be used to provide the mode of operation of the conveyor, which increases its service life, reduced energy consumption by improving the performance of the pipeline. The bending of the ribbon in space on transient sites around the axis of the conveyor 180 provides the ability to rotate steeply inclined section of the conveyor in the plan depending on the specific conditions of the track. 4 C.p. f-crystals, 8 ill.

The invention relates to a steeply inclined belt conveyors and may find wide application is the second load-carrying and backing tape drives, clamping device, creating concentrated pressure efforts to tape using pneumothoraces United in pneumocyte [1].

The disadvantage of this conveyor is the presence of concentrated impacts on the tape, increasing its wear.

Known steeply inclined belt conveyor, containing and carrying the presser belt actuators, pressure modules, located on the steeply inclined portion of the length of the conveyor, each of which lateral and middle rollers pairs are interconnected and are on the same line across the width of the tape, and a spring-loaded lift mechanism through the lever system with hinges associated with the rollers, and transitional areas [2].

The disadvantage of this pipeline is significant wear on the tape due to the application of the same effort of pressing on the sides and middle parts of the tapes. In addition, this pipeline does not provide the ability to control the amount of force pressing the transported material in the process, which increases the energy consumption and wear of the belts, and also have poor performance and large geometrical dimensions flat and transition sections.

The objective of the invention is to increase the possibilities of reducing the size of the flat and transition sections of the pipeline.

This is achieved by the fact that steeply inclined belt conveyor containing and carrying the presser belt actuators, pressure modules mounted on steeply inclined section and including power mechanisms, which are connected through a system of levers with hinges middle and side rollers arranged in pairs on anti-squeak tape, and transitional areas that provide a transition from the flat section of the conveyor to a steeply and from the last to the flat, prijemnom module every two pair of secondary rollers across the width of the retainer tape interconnected levers with hinges, and these levers and the two side of the rink, located along the length of the tape between a pair of secondary rollers, respectively connected by two springs, each spring is equipped with a power mechanism, for example, pneumatometer mounted on the retaining rod and controlled by the microprocessor, whereby the rigidity of the load-carrying and anti-squeak tape bound by the following ratio:

< / BR>
where c1and c2- stiffness of the tape, S1and S2- tension of the tape at the beginning of the lower transition section, W1and W2the resistance to movement of the tape and transition steeply inclined sections, FTP1osteeply inclined section of the conveyor can be rotated in a plane about the axis of the conveyor depending on the configuration of the track, reducing the geometric size of the flat and the transition along the length of the pipeline.

in Fig. 1 shows a schematic diagram steeply inclined belt conveyor;

in Fig. 2 is a top view of the clamping module with separate pressure side and secondary rollers;

in Fig. 3 shows a frontal projection of the clamping module with separate pressing Boko - the ID of A clamping module with separate pressing rollers;

in Fig. 6 is a top view of the clamping module with joint pressure side and secondary rollers;

in Fig. 7 type B clamping module with joint pressing rollers;

in Fig. 8 shows a diagram of the bottom of the transition section, curving in space, with the turn of tape around the axis of the conveyor 180o.

Steeply inclined belt conveyor consists of load-carrying and anti-squeak tape 1, 2, steeply inclined section 3, which are pressure modules 4, two transition sections 5 and 6, providing a transition from a slightly inclined or horizontal section 7 of the steeply inclined section 3 and from the latter to a slightly inclined section 8. Presser module 4 includes two power mechanism, for example, two pneumo adjustable Jack 9, 10, installed on a separate retaining rods 11, 12, connected by springs 13, 14, the first of which is pivotally connected with the frames one pair of lateral rollers 15, and the second by means of levers 16 by hinges 17 - c two pairs of secondary rollers 18 located along the width of the presser belt 2 (see Fig. 2, 3). When two side of the rink 15 are located along the length of the tape between a pair of secondary rollers 18. Pneumatomachi 9 acting on the side Kyu choke 22 and receiver 23 to the compressor 24. Pneumatomachi 10 acting on the middle rollers 18 all modules connected to the compressor 24 is similar (see Fig. 4). To ensure higher productivity centers of each of the springs 13, 14 are located above the level of the rollers (see Fig. 5). At small angles of transportation of material to the centers of the two springs 13, 14 of each clamping module combined and have one holding rod 25 with pneumatometer 26 (see Fig. 6, 7), connected to a common air supply. To reduce the length of pipeline flat and transitional areas of the conveyor belt on transient sites curved space around its axis by 180o(see Fig. 8). While the plot has a steeply to rotate in a plane about the axis of the conveyor. Transition sections 5 and 6 include those consisting of medium 27 and the side 28 of the rollers and the upper presser belt 2 on the lower transition section 5 and the bottom of the carrying tape 1 on the upper transition section 6. The radius of curvature of the transition section is determined from the expression:

< / BR>
where Riis the radius of the transition curve at the i-th raichoor; EIx- rigidity section of the tape bending, Nm2; - the Central angle between the roller,oequal ; - the angle Traore, H; w' is the coefficient of resistance to movement of the tape raichoor.

In the beginning of the transition section 5 of the conveyor is set to the weight sensor 29 and 30 gauge the level of transported material, for example, a capacitive type, and at the end of the upper transition section 6 - sensors 31, 32 speed load-carrying and anti-squeak tape. The outputs of the above sensors are connected to the microprocessor 33, the Trustee values the efforts of the pressing pressure modules 4 and the rotational speed of the actuators 34 and 35 on the conveyor high capacity and length. To create the optimum clamping effort on the belt and the conveyed material stiffness tapes to choose from the relation

< / BR>
where C1and C2- stiffness tapes; S1and S2- tension of the tape at the beginning of the lower transition section; W1and W2the resistance to movement of the tape and transition steeply inclined sections; FTP1and FTR2the friction force arising between the ribbons.

The material to be conveyed is fed to the lower flat section 7 of the conveyor, where it moves the load-carrying branch of the lower conveyor 1 to the transition area 5, which is clamped on top of the presser branch of the upper conveyor 2 and is moved to a steeply SUP>o, steeply inclined section can be rotated in a plane about the axis of the conveyor depending on the specific conditions of the track. To ensure the necessary amount of force pressing the bottom of the tape 1 to the material and the minimum length of the transition section choose the radii of curvature on each raichoor depending on the values of the bending moment generated by the tension of the tape, in accordance with formula (1). With the transition section 5 material goes to the steeply inclined section 3, where it is additionally clamped clamping modules 4. The efforts of the pressure transmitted to the side and middle rollers 15, 18 pressure modules, create separately, for example, pneumatomachi compressed air through two parallel pneumologists 21 and regulate the inductors 20 and 22, which are controlled by the microprocessor 33. In operation, the conveyor for the sensors 29, 30 via the choke 22 selects the maximum effort of the pressing side and secondary rollers 15, 18 and maximum productivity of the conveyor. Using chokes 20 efforts of the pressing regulate the length of the conveyor depending on the elevation, amount of traffic and the relative speed of the tape line which ensures a soft, their impact on the conveyor belt.

Thus, separate and distributed effects of clamping modules on the material to be conveyed on the steeply inclined section and select values effort pressure depending on operating conditions of the conveyor allow you to create the optimal mode of transportation of the material while reducing component wear of the conveyor. With steeply inclined section 3 the conveyed material passes through the transition section 6 on a slightly inclined section 8, where the unloading of the material. In the transition area 6, the contact force clamping the tape to the material creates a tension belts, and when you reach a corner transportation less than 18 clamping action on the material stop and backing tape lift over him. To prevent slippage of the belts relative to each other and the material selection of the stiffness of the tape is done according to the formula (2), and their relative speed adjust by changing the frequency of rotation of the actuators, such as hydraulic couplings, using the microprocessor 33, connected to the sensors 31 and 32 of the speed tape. In this case, the sensors 29-32 speed tapes also may be adjusted by the microprocessor 33, depending on the changes of traffic in order to create stabilnego belt conveyor for transportation of rock mass at public works for example, in diamond mines at an altitude of transportation, each unit 100 m, the length of the lower conveyor transitional section was 15-40 m, which reduced the size by 25 - 30% and turn steeply inclined section in the plan with respect to an axis of the pipeline made it possible to locate flat area along the berm career that has significantly reduced capital mining work on the installation of the pipeline on Board the career. Due to the separate and distributional impact of bail-ins and avoid slippage of the belts wear of the latter decreased by 2-3 times, and the service life of the pipeline has increased 1.5-1.8 times. With the increase of the cross-section of the transported material and improve the contact performance increased by 40 - 50%. Increased productivity and division of effort of pressing on the side and middle rollers have reduced energy consumption by 20-30%.

Sources of information taken into account

1. The UK patent N 2096084, CL 65 G 15/14, 1982.

2. Patent Germany N 3429940, CL 65 G 15/16, 1985.

1. Steeply inclined belt conveyor, containing and carrying the presser belt actuators, pressure modules mounted on steeply inclined section and including iloveporn on anti-squeak tape, and transitional areas that provide a transition from the flat section to a steeply and the transition from the last to the flat, characterized in that prijemnom module every two pair of secondary rollers across the width of the retainer tape interconnected levers with hinges, and these levers and the two side of the rink, located along the length of the tape between a pair of secondary rollers, respectively connected by two springs, each spring is equipped with a power mechanism, for example, pneumatometer mounted on the retaining rod and controlled by the microprocessor, whereby the rigidity of the load-carrying and anti-squeak tape bound by the following ratio:

< / BR>
where c1and c2- stiffness of the tape;

S1and S2- tension of the tape at the beginning of the lower transition section;

W1and W2the resistance to movement of the tape and transition steeply inclined areas;

FTP1and FTR2the friction force arising between the ribbons.

2. Steeply inclined belt conveyor under item 1, characterized in that pneumatomachi affecting lateral rollers all modules included in one main pneumatic system, and pneumatomachi affecting medium-sized rinks all module the same time, the center of each spring is located above the level of the rollers.

4. Steeply inclined belt conveyor under item 1, characterized in that the centers of the two springs of each clamping module combined and springs have one holding the barbell with pneumatometer.

5. Steeply inclined belt conveyor under item 1, characterized in that the conveyor belt on transient sites curved space around the axis of the conveyor 180oand a steeply the plot has to rotate in a plane about the axis of the conveyor.

 

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