Two-way rubber belt conveying device for coal gangue returning to well

Abstract

The utility model provides a bidirectional rubber belt conveying device for coal gangue returning to a well, and belongs to the technical field of coal mining. In order to solve the problem of two-way transportation of the belt conveyor, the utility model firstly solves the problem of lap joint, and the tail part of the belt conveyor is slightly modified (according to the modification contents, 1, an upper-layer carrier roller is replaced by a two-way anti-deviation carrier roller from a one-way anti-deviation carrier roller, 2, a tail roller is replaced by an electric roller with the same specification from a turnabout roller, and 3, telescopic and lifting functions are added; and 4, a counter-force tripod is added, so that bidirectional transportation can be realized by utilizing the existing rubber belt conveyor. The whole transformation process is very simple, the underground roadway space is not occupied, and the coal gangue can be returned to the well in a narrow roadway.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal mining, and specifically discloses a two-way belt conveying device for returning coal gangue to the shaft. Background Technique

[0002] At present, the main methods for comprehensive utilization of coal gangue are: waste dump reclamation technology, coal gangue power generation technology, coal gangue as building aggregate technology, coal gangue brick making technology, coal gangue cement making technology, etc. However, these comprehensive utilization technologies all have certain limitations. For example: the waste dump reclamation technology lacks a unified national governance standard, belongs to pollution first and then treatment, the reclamation cost is very high, and the reclaimed land cannot achieve friendly integration with the local environment; the coal gangue power generation technology requires a gangue power plant near the coal mine, and the calorific value of the coal gangue should match the boiler of the gangue power plant. (The calorific value of the coal gangue often fails to meet the requirements of boiler combustion and needs to be blended with coal before use), and there is a problem of secondary pollution of fly ash; for another example: the coal gangue brick making and the use of coal gangue as building aggregate require not to be too far from the city to ensure the sales of products, but these projects often cannot generate economic benefits; the existing comprehensive utilization means have the following problems:

[0003] ① The treatment cost is very high and uneconomical (the general landfill treatment cost is 25 yuan / ton);

[0004] ② Due to the large volume of coal gangue, the existing treatment methods cannot completely dispose of it;

[0005] ③ It cannot completely solve the environmental pollution problem (such as spontaneous combustion, heavy metal pollution of groundwater, etc.).

[0006] Belt conveyors are the most important transportation equipment in bulk material transportation and are widely used in departments such as mines, metallurgy, electric power, building materials, chemical industry, food, and ports.

[0007] The Chinese patent CN202221484977.1 developed by the inventor discloses a dry return shaft compound transportation equipment and system for coal gangue, which adopts a compound rack. A coal transportation belt conveyor is arranged on the lower layer, and a return shaft gangue transportation belt conveyor is arranged on the upper layer, and the work of returning coal gangue to the shaft can be completed. However, the compound rack is a double-layer rack and is slightly too high in a narrow roadway. Utility Model Content

[0008] The utility model provides a two-way belt conveying device for returning coal gangue to the shaft, which transforms the existing belt conveyor to realize the work of returning coal gangue to the shaft in a narrow roadway.

[0009] The above-mentioned two-way belt conveying device for returning coal gangue to the shaft comprises a first belt conveyor, a second belt conveyor, a feeder, a telescopic movable frame, a lapping arm, a mobile vehicle, a telescopic electric cylinder and a force transmission triangular frame; several groups of intermediate frames in front of the tail of the first belt conveyor adopt telescopic movable frames, and the anti-deviation rollers of the intermediate frames and the telescopic movable frames adopt two-way anti-deviation rollers. The tail of the first belt conveyor is hinged to the first end of the lapping arm, and the tail roller is an electric roller and is installed at the second end of the lapping arm; upper rollers and lower rollers are installed on the lapping arm, and the anti-deviation rollers adopt two-way anti-deviation rollers; the belt of the first belt conveyor is led out from the head roller, bypasses the upper rollers of the intermediate frames and the telescopic movable frames, the upper rollers of the lapping arm, the tail roller, the lower rollers of the lapping arm, the lower rollers of the intermediate frames and the telescopic movable frames, and the tensioning mechanism, and then returns to the head roller; the mobile vehicle is located behind the tail of the first belt conveyor and is connected to the tail; the telescopic rod of the telescopic electric cylinder is hinged to the lapping arm, and the cylinder body is fixedly connected to the mobile vehicle; the force transmission triangular frame is installed between the first belt conveyor and the second belt conveyor, supports under the lapping arm, transmits the belt tension to the foundation, and the height is adjustable; the second end of the lapping arm is lapped above or below the head of the second belt conveyor through the telescopic electric cylinder and the force transmission triangular frame; the one-way anti-deviation rollers of the second belt conveyor are replaced with two-way anti-deviation rollers, and the tail roller is an electric roller; the feeder is installed above the lapping arm and adopts a rotary feeder with a rotary function.

[0010] In the above-mentioned two-way belt conveying device for returning coal gangue to the shaft, one group of two-way anti-deviation rollers is arranged every 10 groups of ordinary rollers.

[0011] The above-mentioned two-way belt conveying device for returning coal gangue to the shaft further comprises a guide rail; the guide rail is fixed on the bottom plate of the roadway; rollers are arranged at the bottom ends of the telescopic movable frame of the first belt conveyor and the bottom end of the mobile vehicle, and the rollers are matched with the guide rail.

[0012] In the above-mentioned two-way belt conveying device for returning coal gangue to the shaft, rail grippers are arranged at the bottom ends of the telescopic movable frame of the first belt conveyor and the bottom end of the mobile vehicle.

[0013] In the above-mentioned two-way belt conveying device for returning coal gangue to the shaft, an electro-hydraulic push rod is connected between the last telescopic movable frame and the mobile vehicle.

[0014] The above-mentioned two-way belt conveying device for returning coal gangue to the shaft further comprises a toothed guide rail and an electric hoist; the toothed guide rail is fixed on the roof of the roadway and is located above the lapping arm; the rotary feeder is installed on the toothed guide rail through the electric hoist.

[0015] In the above-mentioned two-way belt conveying device for returning coal gangue to the shaft, the first belt conveyor and the second belt conveyor are located on the same straight line, or vertically intersect, or obliquely intersect.

[0016] Compared with the prior art, the utility model has the following beneficial effects.

[0017] The working environment in coal mines is complex, harsh, and space-limited. Arbitrary expansion of space will result in high investment and high risk. In order to transport the gangue back to the underground for filling, the utility model replaces the one-way anti-deviation rollers on the upper layer of the belt conveyor with two-way anti-deviation rollers. The two-way anti-deviation rollers can prevent the belt from deviating during reverse transportation. The redirecting roller at the tail of the machine is replaced with an electric roller of the same specification. The electric roller can not only replace the function of the redirecting roller at the tail, but also provide driving force for the belt conveyor, so that the existing belt conveyor can be used to achieve two-way transportation (i.e. forward coal transportation and reverse gangue transportation). A group of intermediate frames in front of the tail of the first belt conveyor are replaced with a retractable movable frame so that it can be pulled out and extended from under the first belt conveyor during overlapping, so as to realize the overlapping conversion between the first belt conveyor and the second belt conveyor, and at the same time cooperate with the tensioning mechanism of the first belt conveyor to tension the belt. The entire transformation process is very simple. It does not occupy the space in the underground tunnels, and the gangue can be returned to the mine in narrow tunnels. It has the characteristics of simple manufacturing and convenient construction. The method of returning the gangue to the underground filling treatment method along the original route is expected to become the lowest cost and most economical method, and is expected to eliminate the problem of gangue pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a front view of the two-way belt conveyor device for returning gangue to the well when the first belt conveyor and the second belt conveyor are located on the same straight line;

[0020] Figure 2 for Figure 1 A top view of

[0021] Figure 3 It is a front view of the two-way belt conveyor device for returning gangue to the well when the first belt conveyor and the second belt conveyor intersect vertically;

[0022] Figure 4 for Figure 3 A top view of

[0023] Figure 5 It is the layout drawing of telescopic movable frame, lap arm and mobile vehicle;

[0024] Figure 6 This is the layout diagram of the lap arm, mobile vehicle, and rotating receiver.

[0025] In the figure: 1 - First belt conveyor; 2 - Second belt conveyor; 3 - Telescopic movable frame; 4 - Lapping arm; 5 - Mobile vehicle; 6 - Telescopic electric cylinder; 7 - Force - transmitting triangular frame; 8 - Bidirectional anti - deviation idler; 9 - Electric roller; 10 - Belt of the first belt conveyor; 11 - Head roller of the first belt conveyor; 12 - Tensioning mechanism of the first belt conveyor; 13 - Rotary feeder; 14 - Guide rail; 15 - Roller; 16 - Rail gripper; 17 - Electro - hydraulic push rod; 18 - Tooth - shaped guide rail; 19 - Electric hoist. Detailed implementation mode

[0026] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Based on the described embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present utility model. Unless otherwise defined, the technical terms or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the field to which the present utility model pertains.

[0027] The "first", "second" and similar terms used in the specification and claims of the patent application of the present utility model do not denote any order, quantity or importance, but are only used to distinguish different components. Terms such as "comprising" or "including" mean that the elements or objects appearing before this term cover the elements or objects listed after this term and their equivalents, without excluding other elements or objects. Terms such as "inside", "outside", "above", "below", "far", "near", "front", "rear", etc. are only used to represent relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly. The accompanying drawings in this embodiment are not drawn strictly according to the actual proportion, and the specific dimensions and quantities of each structure can be determined according to actual needs. The accompanying drawings described in this embodiment are only schematic diagrams of the structure.

[0028] The existing coal - transporting belt conveyor is for one - way transportation, transporting coal from underground to the ground. The two - way belt conveyor designed this time can transport in two directions, that is, transporting coal forward and transporting gangue backward, completing the backfilling of coal gangue into the well, and fundamentally solving the problem of coal gangue polluting the environment.

[0029] This embodiment provides a two-way belt conveying device for returning coal gangue to the shaft, which includes a first belt conveyor 1, a second belt conveyor 2, a feeder, a telescopic movable frame 3, a lapping arm 4, a mobile vehicle 5, a telescopic electric cylinder 6 and a force-transmitting triangular frame 7. For several groups of intermediate frames in front of the tail of the first belt conveyor 1, telescopic movable frames 3 (the telescopic movable frames 3 can adopt a parallelogram structure) are used. Upper idlers and lower idlers are installed on both the telescopic movable frames 3 and the intermediate frames. The anti-deviation idlers of the intermediate frames and the telescopic movable frames 3 adopt two-way anti-deviation idlers 8. The tail of the machine is hinged to the first end of the lapping arm 4, and the tail drum adopts an electric drum 9 and is installed at the second end of the lapping arm 4. Upper idlers and lower idlers are installed on the lapping arm 4, and the upper idlers adopt two-way anti-deviation idlers 8. The belt 10 of the first belt conveyor 1 is led out from the head drum 11, bypasses the upper idlers of the intermediate frames and the telescopic movable frames 3, the upper idlers of the lapping arm 4, the tail drum, the lower idlers of the lapping arm 4, the lower idlers of the intermediate frames and the telescopic movable frames 3, and the tensioning mechanism 12, and then returns to the head drum 11. The mobile vehicle 5 is located behind the tail of the first belt conveyor 1, is connected to the tail, can push the telescopic movable frame 3 to move back and forth, cooperates with the tensioning mechanism 12 of the first belt conveyor 1 to take in and release the belt, and at the same time adjusts the position of the lapping arm 4 in the horizontal direction, so that the second end of the lapping arm 4 can lap above or below the head of the second belt conveyor 2. The telescopic rod of the telescopic electric cylinder 6 is hinged to the lapping arm 4, and the cylinder body is fixedly connected to the mobile vehicle 5, providing power for the lifting of the lapping arm 4. The force-transmitting triangular frame 7 is installed between the first belt conveyor 1 and the second belt conveyor 2, supports below the lapping arm 4, and its height is adjustable to support the lapping arm 4 at different heights. The second end of the lapping arm 4 laps above or below the head of the second belt conveyor 2 through the telescopic electric cylinder 6 and the force-transmitting triangular frame 7. The anti-deviation idlers of the second belt conveyor 2 adopt two-way anti-deviation idlers 8, and the tail drum adopts an electric drum 9. The feeder is installed above the lapping arm 4 and adopts a rotary feeder 13.

[0030] The above-mentioned two-way belt conveying device for returning coal gangue to the shaft further includes a guide rail 14. The guide rail 14 is fixed to the bottom plate of the roadway by bolts. Roller wheels 15 are arranged at the bottom ends of the telescopic movable frame 3 of the first belt conveyor 1 and the bottom end of the mobile vehicle 5, and the roller wheels 15 cooperate with the guide rail 14.

[0031] In the above-mentioned two-way belt conveying device for returning coal gangue to the shaft, holding rail devices 16 are arranged at the bottom ends of the telescopic movable frame 3 of the first belt conveyor 1 and the bottom end of the mobile vehicle 5, which are used to clamp the guide rail 14 to fix the positions of the telescopic movable frame 3 of the first belt conveyor 1 and the mobile vehicle 5.

[0032] In the above-mentioned two-way belt conveying device for returning coal gangue to the shaft, an electro-hydraulic push rod 17 is connected between the last telescopic movable frame 3 and the mobile vehicle 5, and the telescopic movement of the electro-hydraulic push rod 17 makes the telescopic movable frame 3 and the mobile vehicle 5 move along the guide rail 14.

[0033] The above-mentioned two-way belt conveying device for returning coal gangue to the well further includes a toothed guide rail 18 and an electric hoist 19; the toothed guide rail 18 is fixed on the roof of the roadway and is located above the overlapping arm 4; the rotary feeder 13 is installed on the toothed guide rail 18 through the electric hoist 19, and the rotary feeder 13 can move along the overlapping arm 4 to achieve accurate alignment work.

[0034] In the above-mentioned two-way belt conveying device for returning coal gangue to the well, the first belt conveyor 1 and the second belt conveyor 2 are located on the same straight line, or vertically intersect, or obliquely intersect.

[0035] Comparison Table of Two-way Transportation of Belt Conveyors

[0036]

[0037]

[0038] Detailed List of Reconstruction Projects

[0039] Serial number Name of renovation project Quantity / unit Remarks 1 Replace the anti-deviation idler 1 piece for every 11 meters Replace the bi-directional idler with a uni-directional idler 2 Replace the electric roller 1 Replace the deflecting roller with an electric roller 3 Replace 2 sections of the tail intermediate frame 13 meters The length of the intermediate frame is 6 meters per piece 4 Telescopic section 6 meters Replace the telescopic movable frame with a fixed intermediate frame 5 Lifting section 6 meters Add a lapping arm 6 Force-transmitting triangular frame 1 7 Add a hoisting electric hoist 1 Above the roadway at the tail of the machine

[0040] The reconstruction steps are as follows in the table

[0041] Steps Name of component Remarks 1 Carry out design, calculation and layout Carry out design calculation according to the actual situation 2 Replacement of the anti-deviation idler Just replace the original anti-deviation idler with a bi-directional one 3 Add an electric roller at the tail of the machine Just replace the deflecting roller at the tail of the machine with an electric roller of the same specification 4 Replace the movable tail frame at the tail of the machine Remove the intermediate frame and add a movable tail frame 5 Install an anchor bolt to move the lifting toothed guide rail The method is like that of the single rail hoist track 6 Reinforce the foundation of the tail frame Add according to the anchoring force 7 Debugging

[0042] Degree of Influence on Existing Six Major Systems and Roadways

[0043] Serial number Name Degree of influence Remarks 1 Coal mining system None Add a backfilling working face, and the output will increase or remain unchanged 2 Tunneling system None 3 Mechanical and electrical system None 4 Transportation system None Renovate the tail, and the conveyor will transport in both directions 5 Ventilation system None 6 Drainage system None 7 Shaft None 8 Roadway None

[0044] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A two-way belt conveying device for returning coal gangue to the well, comprising a first belt conveyor, a second belt conveyor and a feeder; It is characterized in that It further comprises a telescopic movable frame, a lapping arm, a moving vehicle, a telescopic electric cylinder and a force-transmitting triangular frame; A number of intermediate frames in front of the tail of the first belt conveyor adopt telescopic movable frames. The anti-deviation rollers of the intermediate frames and the telescopic movable frames adopt two-way anti-deviation rollers. The tail is hinged to the first end of the lapping arm, and the tail roller adopts an electric roller and is installed at the second end of the lapping arm; Upper rollers and lower rollers are installed on the lapping arm, and the anti-deviation rollers adopt two-way anti-deviation rollers; The belt of the first belt conveyor is led out from the head roller, bypasses the upper rollers of the intermediate frames and the telescopic movable frames, the upper rollers of the lapping arm, the tail roller, the lower rollers of the lapping arm, the lower rollers of the intermediate frames and the telescopic movable frames, and the tensioning mechanism, and then returns to the head roller; The moving vehicle is located behind the tail of the first belt conveyor and is connected to the tail; The telescopic rod of the telescopic electric cylinder is hinged to the lapping arm, and the cylinder body is fixedly connected to the moving vehicle; The force-transmitting triangular frame is installed between the first belt conveyor and the second belt conveyor, supports below the lapping arm, and its height is adjustable; The second end of the lapping arm is lapped above or below the head of the second belt conveyor through the telescopic electric cylinder and the force-transmitting triangular frame; The anti-deviation rollers of the second belt conveyor adopt two-way anti-deviation rollers, and the tail roller adopts an electric roller; the feeder is installed above the lapping arm and adopts a rotary feeder.

2. The coal gangue return shaft bidirectional belt conveying device according to claim 1, wherein, It further comprises a guide rail; The guide rail is fixed on the bottom plate of the roadway; Rollers are arranged at the bottom ends of the telescopic movable frame of the first belt conveyor and the bottom end of the moving vehicle, and the rollers cooperate with the guide rail.

3. The coal gangue return shaft two-way belt conveying device according to claim 2, characterized in that, Clamping rails are arranged at the bottom ends of the telescopic movable frame of the first belt conveyor and the bottom end of the moving vehicle.

4. The gangue back-to-well bidirectional belt conveying device according to claim 3, wherein, The last telescopic movable frame and the moving vehicle are connected by an electro-hydraulic push rod.

5. The coal gangue back-to-shaft bidirectional belt conveyor device according to claim 4, wherein It further comprises a toothed guide rail and an electric hoist; The toothed guide rail is fixed on the roof of the roadway and is located above the lapping arm; The rotary feeder is installed on the toothed guide rail through the electric hoist.

6. The two-way belt conveying device for returning coal gangue to the well according to any one of claims 1-5, wherein, The first belt conveyor and the second belt conveyor are located on the same straight line, or vertically intersect or obliquely intersect.

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