CN214297738U

CN214297738U - Raw coal conveying device for underground short coal bunker

Info

Publication number: CN214297738U
Application number: CN202120014858.9U
Authority: CN
Inventors: 张军良; 刘万晶; 宋艳强; 鲁存德
Original assignee: Yaojie Coal Electricity Group Co ltd
Current assignee: Yaojie Coal Electricity Group Co ltd
Priority date: 2021-01-05
Filing date: 2021-01-05
Publication date: 2021-09-28
Anticipated expiration: 2031-01-05

Abstract

The utility model discloses a raw coal conveyor for short and small bunker in pit belongs to the coal mine equipment field, mainly solves short and small bunker in pit during raw coal transportation, and artifical coal discharge opening intensity of labour is big, and easy card is stifled, a series of problems such as bunker bulkhead, bunker bottom fragile and coal dust pollution. The raw coal conveying device for the underground short coal bunker comprises a main roadway, the coal bunker and an air inlet roadway, wherein a rubber belt conveyor is arranged in the air inlet roadway, a coal sliding inclined plane is arranged at the lower part of the coal bunker, a coal discharging opening is formed in one end with a low gradient of the coal sliding inclined plane, a coal discharging door is movably mounted at the coal discharging opening, a movable end of a hydraulic jack is fixed on the coal discharging door, a supporting end of the hydraulic jack is fixed on the inner wall of the top of the main roadway, and a scraper conveyor is arranged in the main roadway. The utility model discloses simple structure, with low costs, feasibility height.

Description

Raw coal conveying device for underground short coal bunker

Technical Field

The utility model belongs to the technical field of coal mine equipment, concretely relates to raw coal conveyor that is used for short and small coal bunker in pit.

Background

As shown in figure 4, at the beginning of the recovery of a coal mine 17204-1 working face of a coal mine group Jinhe Jie, the original 17204-1 working face has a coal sliding hole with a full height of 6 meters and a clean section of 2.56 square meters (1.6 multiplied by 1.6 meters), a manual coal discharge port 25 is adopted for coal discharge, the size of the manual coal discharge port 25 is 0.7 multiplied by 0.7 meter, during the transportation of raw coal, the labor intensity of the manual coal discharge port is high, the manual coal discharge port is easy to block, the wall and the bottom of a coal bunker are easy to damage, coal dust pollution and other problems exist, and as the size of the main large roadway 3 is limited, the lower port of the coal bunker 2 cannot be lapped with a rubber belt conveyor, the raw coal conveying device suitable for the underground short coal bunker under the special condition is designed by comprehensive consideration, and at present, no mature technology is available in China to solve the problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a raw coal conveyor for short and small bunker in pit to solve short and small bunker in pit during raw coal transportation, artifical coal outlet intensity of labour is big, blocks up easily, a series of problems such as bunker wall, bunker bottom fragile and coal dust pollution.

In order to solve the above problems, the utility model discloses the technical scheme who takes is:

the utility model provides a raw coal conveyor for short and small coal bunker in pit, includes main big lane, coal bunker, air inlet tunnel, is equipped with rubber belt conveyor in the air inlet tunnel, the lower part of coal bunker is equipped with the coal chute inclined plane, and the one end that the coal chute inclined plane slope is low is the coal discharge mouth, and coal discharge mouth movable mounting has the coal discharge door, fixes hydraulic jack's expansion end on the coal discharge door, and hydraulic jack's support end is fixed at the top inner wall in main big lane, is equipped with scraper conveyor in the main big lane.

Furthermore, a coal chute is arranged at the top of the coal bunker, and a plurality of coal sieving pieces formed by I-shaped steel are arranged at the coal chute.

Furthermore, the bottom of the coal screening piece is provided with a buffer chain, and the buffer chain extends towards the inside of the bin.

Furthermore, a prefabricated inner bin matched with the coal bin is fixedly arranged in the coal bin, the inner bin is formed by longitudinally connecting a plurality of barrel-shaped iron bins, and each barrel-shaped iron bin is formed by connecting a plurality of fan-shaped plate bolts.

Furthermore, a dust cover is arranged in the main roadway close to the coal door, and the top of the dust cover and the direction of the machine head close to the scraper conveyor are arranged in an open mode.

Furthermore, a supporting rod is transversely fixed in the middle of the dust cover, a second spray head is installed at the bottom of the supporting rod, and a first spray head is installed at the upper part of the air inlet roadway.

Furthermore, a coal baffle plate is arranged on the side surface of the chute of the scraper conveyor.

Furthermore, the included angle between the inclined plane of the coal chute and the bottom of the coal bunker is 45-55 degrees.

Furthermore, a partition is arranged at the position, close to the coal bunker, of the top of the main roadway, a top plate is arranged at the bottom of the partition, and the top plate is used for propping against the supporting end of the hydraulic jack.

Further, a valve group for controlling the hydraulic jack is installed on the machine head of the rubber belt conveyor.

The utility model has the advantages as follows:

the raw coal conveying device for the underground short coal bunker reforms the original manual coal discharge port, controls the opening and closing of the coal discharge door by using the hydraulic jack, is simpler than the traditional manual coal discharge mode and the coal feeding mode of a coal feeder, solves the problem of blockage of the coal bunker, saves manpower and reduces equipment; the design of the coal sliding inclined plane effectively prevents the coal blocks from damaging the bottom of the coal bunker; due to the limited size of the main roadway, the lower opening of the coal bunker can not be lapped with the rubber belt conveyor under the special condition, and the coal bunker is more suitable for the scraper conveyor.

The coal screening piece is used for screening large coal blocks, prevents the large coal blocks from falling into the coal bunker to damage a coal sliding inclined plane, and also prevents workers from carelessly falling into the coal bunker.

Because the buffering chain is arranged, the impact of the coal body is reduced, and the inclined plane of coal sliding and the inner bin wall are effectively prevented from being damaged.

Because the raw coal bunker is overhauled, an inner bunker needs to be added in the coal bunker to play a role in protecting the wall of the raw coal bunker, the common operation method is to beat an anchor rod in the coal bunker for tamping and reinforcing, for the special condition of a short coal bunker, the diameter of the coal bunker is only about one meter and six, after people enter the coal bunker, the anchor rod cannot be beaten due to small space, no space is available for appliances, the inner bunker is prefabricated in advance, and then the coal bunker is fixed by a pouring mode, compared with the traditional anchor rod and a reinforcing steel bar, the concrete spraying mode is utilized, and the coal bunker has obvious advantages in personal safety, later quality and construction speed; and because the coal bunker is 6 meters high, the net section is 1.6m multiplied by 1.6m, the inner bunker is arranged into a plurality of sections of barrel-shaped iron bunkers, and then the barrel-shaped iron bunkers are longitudinally connected, so that the construction and the installation are more convenient compared with the integral inner bunker.

The first spray head and the second spray head are used for preventing dust.

The roof department corresponds is hydraulic jack's support end mounted position, and the roof is used for withstanding hydraulic jack, increase intensity.

The utility model provides a pair of a raw coal conveyor for short and small coal bunker in pit, simple structure, with low costs, feasibility are high, and it is big thoroughly to have solved artifical coal discharge opening intensity of labour, and easy card is stifled, coal bunker bulkhead, coal bunker bottom fragile, a series of problems such as coal dust pollution during raw coal transportation.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the barrel-shaped iron bin 22 of the present invention;

FIG. 3 is a schematic view of a coal screening member of the present invention;

FIG. 4 is a schematic view of a prior art coal bunker;

reference numerals: 1. an air intake tunnel; 2. a coal bunker; 3. a main roadway; 4. an inner bin; 5. coal slipping slope; 6. a coal discharge door; 7. a scraper conveyor; 8. a dust cover; 9. a coal baffle plate; 10. a first nozzle; 11. a second nozzle; 12. a hydraulic jack; 13. i-shaped steel; 14. a buffer chain; 15. a belt conveyor; 16. a spacer; 17. a top plate; 18. a coal chute; 19. a valve block; 20. a support bar; 21. a sector plate; 22. a barrel-shaped iron bin; 23. a first base; 24. a second base; 25. and (5) a manual coal discharge port.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

As shown in fig. 1-4, a raw coal transportation device for underground short coal bunker comprises an air inlet roadway 1, a coal bunker 2 and a main roadway 3, wherein an inner bunker 4 is pre-processed and manufactured according to the minimum inner diameter of the coal bunker 2, for convenience of construction, six barrel-shaped iron bunkers 22 are processed according to the height of the coal bunker 2, the height of each barrel-shaped iron bunker 22 is preferably 1 meter, the six barrel-shaped iron bunkers 22 are longitudinally welded to form the inner bunker 4, and the specific processing method of the barrel-shaped iron bunkers 22 is as follows: when the diameter of the coal bunker 2 is 1 m, the barrel-shaped iron bunker 22 is processed and formed at one time, when the diameter of the coal bunker 2 is more than 1 m, the barrel-shaped iron bunker 22 is formed by connecting four fan-shaped plates 21 through bolts, and the inner wall of the coal bunker 2 and the outer wall of the inner bunker 4 are cast and fixed; the lower opening of the coal bunker 2 is provided with a coal sliding inclined plane 5, the included angle between the coal sliding inclined plane 5 and the bottom of the coal bunker 2 is 45-55 degrees, and the concrete method comprises the following steps: 2 pre-buried stock in bottom of coal bunker, stock interval 400mm, the length of stock gradually increases progressively along with the slope on swift current coal inclined plane 5, and swift current coal inclined plane 5 is laid with old and useless track to wear to tie up the anchor stock for the reinforcing bar fixed, the one end that the 5 slopes on swift current coal inclined plane are the coal discharge mouth, and coal discharge mouth installs coal discharge door 6 through the hinge, and this hinge is installed at the top of coal discharge door 6, coal discharge door 6 is the steel sheet that the advanced design processed, and coal discharge door 6 opens and shuts through hydraulic jack 12 control, fixes hydraulic jack 12's expansion end on coal discharge door 6, and hydraulic jack 12's support end is fixed at the top inner wall of main big lane 3, and concrete mounting method is: the top of the main roadway 3 close to the coal bunker 2 forms a spacer 16 by means of tamping with concrete and steel plates, the joint of the bottom of the spacer 16 and the main roadway 3 is a top plate 17, the top plate 17 and the isolation piece 16 form a whole in a concrete tamping mode, the position of the top plate 17 corresponds to the mounting position of the supporting end of the hydraulic jack 12, the top plate 17 is used for supporting the hydraulic jack 12 to increase the strength, the second base 24 is mounted on the inner wall of the top of the main roadway 3 corresponding to the top plate 17, the first base 23 is welded on the upper portion of the coal door 6, the supporting end of the hydraulic jack 12 is mounted on the second base 24, the movable end of the hydraulic jack 12 is fixed on the first base 23 through a bolt, the power of the hydraulic jack 12 is supplied by a working face emulsion pump, and as shown in fig. 1, the coal chute inclined plane 5 and the bottom of the coal bunker 2 are reinforced in a tamping mode.

Ten I-beams 13 are transversely and longitudinally and uniformly erected at a coal chute 18 to form a lattice shape and used as a coal screening piece, a buffer chain 14 is tied and bound on the I-beam 13 at the bottom of the coal screening piece, the buffer chain 14 is designed into a U shape, a rubber belt conveyor 15 is laid on an air inlet roadway 1, a valve bank 19 is installed at the head of the rubber belt conveyor 15, the valve bank 19 mainly controls a hydraulic jack 12 to open and close a coal discharging door 6, and an SGZ730/200 type scraper conveyor 7 is laid on a main conveying roadway 3 to form the whole raw coal conveying system.

The first nozzle 10 is installed on the upper portion of the air inlet roadway 1, and when coal blocks transported by the belt conveyor 15 descend to the coal bunker 2 under the action of self weight through the coal sliding port 18, dust can be prevented from flying by water sprayed by the first nozzle 10.

Be close to in main big lane 1 and put coal door 6 department installation dust cover 8, the top of dust cover 8 and the aircraft nose direction that is close to scraper conveyor 7 all open the setting, the horizontal fixed stay pole 20 in middle part of dust cover 8, bracing piece 20 bottom installation second shower nozzle 11, second shower nozzle 11 and the water tank intercommunication in air inlet lane 1, second shower nozzle 11 prevents to put the coal cinder dust that coal door 6 came out and flies upward.

And a coal blocking plate 9 is arranged on the side surface of the chute of the scraper conveyor 7 to prevent coal blocks on the scraper conveyor 7 from falling.

Description of the operation: raw coal is conveyed to a coal sliding port 18 through a rubber belt conveyor 15, the raw coal slides to a coal sliding inclined plane 5 in a self-weight mode, due to the fact that a buffer chain 14 is installed, impact of coal is reduced, a worker operates a valve group 19, a coal discharging door 6 is opened, the coal is discharged into a scraper conveyor 7 and is conveyed to the next coal bunker through the scraper conveyor 7, as shown in the figure 1, the scraper conveyor 7 marked on the figure is the tail of the scraper conveyor, and the scraper conveyor 7 moves forwards and enters the next coal bunker.

Claims

1. The utility model provides a raw coal conveyor for short and small coal bunker in pit, includes main big lane (3), coal bunker (2), air inlet tunnel (1), be equipped with rubber belt conveyor (15) in air inlet tunnel (1), its characterized in that: the lower part of the coal bunker (2) is provided with a coal sliding inclined plane (5), one end of the coal sliding inclined plane (5) with a low gradient is a coal discharge port, a coal discharge door (6) is movably mounted at the coal discharge port, the movable end of a hydraulic jack (12) is fixed on the coal discharge door (6), the supporting end of the hydraulic jack (12) is fixed on the inner wall of the top of the main roadway (3), and a scraper conveyor (7) is arranged in the main roadway (3).

2. The raw coal conveying device for the underground short coal bunker as claimed in claim 1, wherein: the top of the coal bunker (2) is provided with a coal sliding opening (18), and a coal screening piece consisting of a plurality of I-shaped steel (13) is arranged at the coal sliding opening (18).

3. A raw coal conveying apparatus for a short coal bunker downhole as claimed in claim 2, wherein: the coal bunker (2) is internally fixedly provided with a prefabricated inner bunker (4) matched with the coal bunker (2), the inner bunker (4) is formed by longitudinally connecting a plurality of barrel-shaped iron bunkers (22), and each barrel-shaped iron bunker (22) is formed by connecting a plurality of fan-shaped plates (21) through bolts.

4. A raw coal conveying apparatus for a short coal bunker downhole as claimed in claim 3, wherein: the bottom of the coal screening piece is provided with a buffer chain (14), and the buffer chain (14) extends into the inner bin (4).

5. The raw coal conveying device for the underground short coal bunker as claimed in claim 1, wherein: a dust cover (8) is arranged in the main roadway (3) close to the coal discharging door (6), and the top of the dust cover (8) and the direction of the machine head close to the scraper conveyor (7) are arranged in an open mode.

6. The raw coal conveying device for the underground short coal bunker as claimed in claim 5, wherein: the middle part of dust cover (8) transversely is fixed with bracing piece (20), and second shower nozzle (11) are installed to the bottom of bracing piece (20), first shower nozzle (10) are installed on the upper portion in air inlet tunnel (1).

7. The raw coal conveying device for the underground short coal bunker as claimed in claim 1, wherein: and a coal baffle plate (9) is arranged on the side surface of the chute of the scraper conveyor (7).

8. The raw coal conveying apparatus for a short coal bunker in a well as claimed in claim 7, wherein: the included angle between the coal sliding inclined plane (5) and the bottom of the coal bin (2) is 45-55 degrees.

9. The raw coal conveying device for the underground short coal bunker as claimed in claim 1, wherein: and a partition (16) is arranged at the position, close to the coal bunker (2), of the top of the main roadway (3), a top plate (17) is arranged at the bottom of the partition (16), and the top plate (17) is used for propping against the supporting end of the hydraulic jack (12).

10. The raw coal conveying device for the underground short coal bunker as claimed in claim 1, wherein: and a valve group (19) for controlling the hydraulic jack (12) is arranged on the head of the rubber belt conveyor (15).