CN214997786U

CN214997786U - Semi-closed dust guide device between hydraulic support frames of fully mechanized coal mining face of coal mine

Info

Publication number: CN214997786U
Application number: CN202120797880.5U
Authority: CN
Inventors: 李世航; 周福宝; 侯钧; 户书达; 靳昊; 王路宇; 温国祥; 吕伟鹏
Original assignee: China University of Mining and Technology CUMT
Current assignee: China University of Mining and Technology CUMT
Priority date: 2021-04-19
Filing date: 2021-04-19
Publication date: 2021-12-03
Anticipated expiration: 2031-04-19

Abstract

A semi-closed dust guide device between hydraulic support frames of a fully mechanized mining face of a coal mine is characterized in that two guide rails (4) are fixed on a hydraulic support beam (1) through a plurality of lug plates (5) respectively, the two guide rails (4) are arranged in parallel, two sides of a dust guide pocket (2) are connected to corresponding hangers (3) in the guide rails (4) through corresponding telescopic springs (6) respectively, the number of the telescopic springs (6) is multiple, the telescopic springs (6) are in sliding fit with the hangers (3), the semi-closed dust guide device further comprises clamping grooves (7) which are fixed inside the two guide rails (4) respectively and limit the hangers (3), the upper edges of the clamping grooves (7) extend downwards, and the lower edges of the clamping grooves extend upwards; the dust guide pocket (2) is made of terylene oxford cloth material. The utility model discloses simple structure, the simple operation can effectual reduction move a large amount of coal dusts that the frame produced because of hydraulic support, eliminates a large amount of coal dusts to operational environment, staff's negative effects.

Description

Semi-closed dust guide device between hydraulic support frames of fully mechanized coal mining face of coal mine

Technical Field

The utility model relates to a colliery is combined and is adopted working face dust collector specifically is a semi-enclosed dust guide device between colliery is combined and is adopted working face hydraulic support frame, belongs to coal mining dust prevention and control technical field.

Background

With continuous innovation of coal mining technology, the advantages of large mining height fully-mechanized mining technology are continuously embodied, for example: the large-mining-height fully-mechanized mining technology has the characteristics of small workload, low production cost, high mining rate and the like, has obvious mining advantages, is widely adopted at home and abroad, and is one of the main development directions of the mining of thick coal seams at home and abroad.

In the large mining height fully-mechanized mining technology, a working face is supported and moved through a hydraulic support, a telescopic upright post is firstly lowered during moving to enable the support to be unloaded and separated from a top plate, then a pushing jack is actuated to move the support by taking a conveyor (or an adjacent support and the like) as a fulcrum, and then the conveyor is pushed by taking the supported support as the fulcrum. The support can also realize various auxiliary actions such as side protection, balance, support adjustment and the like through a jack, thereby realizing comprehensive mechanization of coal dropping, supporting and transportation of a working face by matching with a coal mining machine and a scraper conveyor. The hydraulic supports are arranged on the working face in a guiding way at a certain interval, most of the hydraulic supports move sequentially, and the other hydraulic supports move in a segmented or alternative mode.

In the moving frame and pillar descending process, coal dust and crushed coal formed by crushing top coal can be scattered from the gap of the adjacent hydraulic support, the top coal is quickly diffused to the whole working face under the action of transverse airflow of the working face, the downwind side operation area is seriously polluted, particularly, the fully-mechanized working face is polluted, the coal cutting strength is high, the height of the support is high, the moving frame and pillar descending dust generation pollution is very large, the coal dust brings great harm to the physical and mental health of operating personnel in a support sidewalk, and the abrasion condition of equipment is accelerated.

At present, dust control in the fully mechanized mining process of a coal mine is mainly carried out from the following three aspects: firstly, before coal mining, the wettability of the coal body is improved by a measure of injecting water into the coal body, so that the possibility of generating dust in the coal body is reduced; secondly, during mining, a specific dustproof technology is utilized to control a dust source to prevent further dust diffusion, and the dust source only exists in a specific space and position; thirdly, the dust generated is filtered or removed in time by using related dust removal technologies or equipment, and in the design of the prior dust collecting bag, a plurality of imperfect places exist: the material of the dust collecting bag is only a semi-flexible wear-resistant material which is simply adopted, and the dust collecting bag cannot adapt to a more complex working environment; in the frame moving process, the front edge of the dust catching pocket slides backwards along with the movement of the support and cannot catch front dust and coal dust; the dust collecting bag is easy to be damaged when moving due to limited extensibility. Although certain dust fall effect can be got, spraying and coal seam water injection can cause the people moving walkways trickle to worsen operation personnel's work environment to influence the coal quality, the practicality is relatively poor.

Disclosure of Invention

The utility model aims at providing a colliery is combined and is adopted semi-closed dust device of leading between working face hydraulic support frame, simple structure, the simple operation can effectual reduction move a large amount of coal dusts that produces because of hydraulic support, eliminates a large amount of coal dusts to operational environment, staff's negative effects.

In order to achieve the purpose, the utility model provides a semi-closed dust guide device between hydraulic support frames of a fully mechanized mining face of a coal mine, which comprises a dust guide pocket, a hanging bracket, a plurality of guide rails, lug plates and expansion springs, wherein the two guide rails are respectively fixed on a hydraulic support beam through a plurality of lug plates, the two guide rails are arranged in parallel, two sides of the dust guide pocket are respectively connected to the corresponding hanging bracket in the guide rails through the corresponding expansion springs, the expansion springs are in a plurality, the expansion springs are in sliding fit with the hanging bracket, the semi-closed dust guide device also comprises clamping grooves which are respectively fixed in the two guide rails and limit the hanging bracket, the upper edges of the clamping grooves extend downwards, and the lower edges of the clamping grooves extend upwards; the dust guide bag is made of terylene oxford cloth material.

Because the gallows can slide at the inside minizone of track, the gallows sliding distance at both ends is too big around preventing, the utility model discloses inside setting up in the guide rail is used for carrying out spacing baffle to first gallows and last gallows, the baffle is two, and one of them baffle installation is in the back of the first gallows in the front, and another baffle installation is in the front of the last gallows in rear.

In order to facilitate the setting up gallows and semi-closed dust guide, the utility model discloses set up the longitudinal section of guide rail into the C type, and C shape opening down.

In order to reduce the weight of the guide rail under the condition of meeting the structural strength, the guide rail of the utility model is made of light high-strength metal materials; in order to make the expanding spring durability improve, increase of service life, the utility model discloses an expanding spring adopts light elastic metal material to make.

In order to prevent the guide rail from being separated from the hanging bracket in the moving process, the utility model discloses seal the both ends of guide rail.

In order to prevent the gallows from transferring out the draw-in groove, the utility model discloses set up the gallows into "worker" font to imbed the both ends of gallows in the draw-in groove.

Compared with the prior art, the utility model has the advantages that two sides of the dust guide bag are respectively connected to the corresponding hangers in the guide rails through the corresponding telescopic springs, the two guide rails are respectively fixed on the hydraulic support beam through the plurality of ear plates, the semi-closed dust guide device is fixed on the hydraulic support beam, and collected dust can be guided to a goaf behind the hydraulic support while the falling dust is intercepted; the draw-in groove is fixed respectively and is carried on spacingly inside two guide rails and to the gallows, and the top edge downwardly extending of draw-in groove, lower limb upwards extend, prevent that the gallows from deviating from the guide rail when moving the frame, the utility model discloses a lead the dirt pocket and adopt dacron oxford material to make, can guarantee to keep the elasticity and the intensity of semi-airtight dust guiding device at the in-process that moves the frame, surface smoothness and wearability satisfy the demand of leading the dirt process, the utility model discloses simple structure, the simple operation can effectual reduction move a large amount of coal dusts that the frame produced because of hydraulic support, eliminates a large amount of coal dusts to operational environment, staff's negative effects.

Drawings

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

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a schematic diagram of the hydraulic support of the present invention prior to movement during operation;

fig. 4 is a schematic diagram of the hydraulic support after moving in the specific implementation process of the present invention.

In the figure: 1. the dust collecting device comprises a hydraulic support beam, 2, a dust guide pocket, 3, a hanging bracket, 4, a guide rail, 5, lug plates, 6, a telescopic spring, 7, a clamping groove, 8 and a baffle plate.

Detailed Description

The present invention will be further explained with reference to the drawings (the front-back direction in the following description is the same as the front-back direction in fig. 1, and only for describing the present invention).

As shown in fig. 1 and 2, the semi-closed dust guide device between hydraulic support frames of a fully mechanized mining face of a coal mine comprises a dust guide pocket 2, a hanger 3, guide rails 4, lug plates 5 and telescopic springs 6, wherein the two guide rails 4 are respectively fixed on a hydraulic support beam 1 through a plurality of lug plates 5, the two guide rails 4 are arranged in parallel, two sides of the dust guide pocket 2 are respectively connected to the corresponding hanger 3 in the guide rails 4 through the corresponding telescopic springs 6, the hanger 3 can slide in a small range in the track 4, the number of the telescopic springs 6 is multiple, the telescopic springs 6 and the hanger 3 are in sliding fit, the semi-closed dust guide device also comprises clamping grooves 7 which are respectively fixed in the two guide rails 4 and limit the hanger 3, the upper edges of the clamping grooves 7 extend downwards, and the lower edges extend upwards; the dust guide bag 2 is made of terylene oxford cloth material.

The baffle plate 8 is arranged inside the guide rail 4, and the baffle plate 8 is two pieces, wherein one piece of baffle plate 8 is arranged behind the first hanging bracket 3 at the front, and the other piece of baffle plate 8 is arranged in front of the last hanging bracket 3 at the rear.

The longitudinal section of the guide rail 4 is C-shaped, and the opening of the C-shape faces downward.

The guide rail 4 is made of light high-strength metal material, and the extension spring 6 is made of light elastic metal material.

The guide rail 4 is closed at both ends.

The hanger 3 is I-shaped, and two ends of the hanger 3 are embedded into the clamping grooves 7.

The utility model discloses an otic placode 5 on guide rail 4 and combine and adopt two adjacent hydraulic support roof beams 1 of working face to fix each other and play the effect of support, lead dirt pocket 2 and be used for catching and derive the coal dust to rear collecting space area, lead dirt pocket 2 and adopt dacron oxford to make, can guarantee to keep the elasticity and the intensity of semi-closed dust guide device in the process of moving the frame, surface smoothness and wearability satisfy the demand of leading the dirt process;

when the utility model is used, two sides of the dust guide bag 2 are respectively hung with one end of the telescopic spring 6, the other end of the telescopic spring 6 is connected with the hanger 3 and is arranged in the clamping groove 7 in the guide rail 4, the other end of the telescopic spring 6 is in sliding fit with the hanger 3, and the two guide rails 4 are respectively fixed on the hydraulic support beam 1 through the ear plates 5; the guide rail 4 is arranged in a C shape, the opening of the C shape faces downwards, and the hanging bracket 3 is convenient to arrange; the hanging bracket 3 is arranged in the guide rail 4 and is not attached to the inner walls of the two sides of the guide rail 4, a moving interval of the hanging bracket 3 is reserved, the clamping groove 7 can be embedded, the upper edge of the clamping groove 7 extends downwards, the lower edge of the clamping groove 7 extends upwards, and the hanging bracket 3 is prevented from falling out of the guide rail 4 due to frame moving; in order to reduce the weight of the guide rail and ensure the structural strength, the guide rail 4 is made of a light and high-strength metal material, such as aluminum alloy; in order to enlarge the dust catching range of the semi-closed dust guiding device in the frame moving process, the semi-closed dust guiding device 2 is connected with the hanging frame 3 by the telescopic spring 6; in order to improve the durability of the extension spring 6, the extension spring 6 is made of a light elastic metal material;

in the specific implementation process, when one hydraulic support moves forwards, one guide rail 4 moves forwards together, the connected dust guide bag 2 is pulled open under stress to hold the area below a gap generated by the movement of the support, and the coal ash and crushed coal generated in the movement of the support cannot be dissipated and smashed; meanwhile, the dust guide bag 2 and the hanging bracket 3 are connected by using the telescopic spring 6, so that the ductility of the dust guide bag 2 is further increased on the premise that the dust guide bag 2 is elastic in the process of moving the hanging bracket, and the dust guide bag 2 is prevented from being damaged or deformed; the telescopic spring 6 with high durability is adopted to prevent the telescopic spring 6 from generating destructive deformation after the frame moving and being incapable of being restored to the initial state; the captured coal dust and crushed coal are naturally deposited on the dust guide bag 2 and then gradually slide down under the action of self gravity to be guided out of the goaf behind the bracket.

Claims

1. The semi-closed dust guide device between the hydraulic support frames of the fully mechanized mining face of a coal mine comprises a dust guide pocket (2), a hanging bracket (3), guide rails (4), lug plates (5) and expansion springs (6), wherein the two guide rails (4) are fixed on a hydraulic support beam (1) through a plurality of lug plates (5) respectively, the two guide rails (4) are arranged in parallel, two sides of the dust guide pocket (2) are connected to the corresponding hanging bracket (3) in the guide rails (4) through the corresponding expansion springs (6), the expansion springs (6) are multiple in number, the expansion springs (6) and the hanging bracket (3) are in sliding fit, and the semi-closed dust guide device is characterized by further comprising clamping grooves (7) which are fixed inside the two guide rails (4) respectively and limit the hanging bracket (3), the upper edges of the clamping grooves (7) extend downwards, and the lower edges of the clamping grooves extend upwards; the dust guide pocket (2) is made of terylene oxford cloth material.

2. The semi-closed dust guide device between the hydraulic supports of the coal mine fully mechanized mining face is characterized by further comprising two baffles (8) arranged inside the guide rail (4), wherein one baffle (8) is arranged behind the first hanger (3) at the front, and the other baffle (8) is arranged in front of the last hanger (3) at the rear.

3. The semi-closed dust guide device between the hydraulic support frames of the fully mechanized mining face of the coal mine according to claim 1 or 2, wherein the longitudinal section of the guide rail (4) is C-shaped, and the opening of the C-shaped is downward.

4. The semi-closed dust guide device between the hydraulic support frames of the fully mechanized mining face of the coal mine according to claim 1 or 2, wherein the guide rail (4) is made of light high-strength metal material, and the expansion spring (6) is made of light elastic metal material.

5. The semi-closed dust guide device between the hydraulic support frames of the fully mechanized coal mining face of the coal mine according to claim 4, wherein two ends of the guide rail (4) are closed.

6. The semi-closed dust guide device between the hydraulic support frames of the fully mechanized mining face of the coal mine according to claim 5, wherein the hanger (3) is I-shaped, and two ends of the hanger (3) are embedded into the clamping grooves (7).