WO2020206864A1

WO2020206864A1 - Guide rail-based steel wire mesh transport device for soft coal seam working surface and method of using same

Info

Publication number: WO2020206864A1
Application number: PCT/CN2019/096403
Authority: WO
Inventors: 王磊; 袁秋鹏; 朱传奇
Original assignee: 安徽理工大学
Priority date: 2019-04-08
Filing date: 2019-07-17
Publication date: 2020-10-15
Also published as: ZA202006045B; CN109882220A

Abstract

A guide rail-based steel wire mesh transport device for a soft coal seam working surface comprises a hydraulic supporting frame (1) provided between a coal face (5) and a goaf (6); a guide rail (4) suspended under a front section of the hydraulic supporting frame (1); a steel wire mesh (2) laid over the hydraulic supporting frame (1), wherein a rear portion of the steel wire mesh (2) is fixed at a bottom portion of gangue in the goaf (6), a front portion of the steel wire mesh (2) extends forward along the hydraulic supporting frame, the front end of the steel wire mesh (2) passes around a face guard (11) at the front end of the hydraulic supporting frame (1) and is connected by means of a mesh fastener (3) to a steel wire mesh roll wound around the guide rail (4) Also disclosed is a method of using the steel wire mesh transport device, capable of improving the efficiency of spreading a steel wire mesh.

Description

Guide rail type steel wire mesh transmission device for soft coal seam working face and use method

Technical field

The invention relates to the technical field of coal mining, in particular to a guide rail type steel wire mesh transmission device and a use method for a soft coal seam working face.

Background technique

With the continuous increase of mining depth and mining intensity, the mining technical conditions of mines have become more complex. The problems of soft roof, soft floor and soft coal seams have gradually become prominent. The strength of soft coal seams is low, and the structure is poor. During the mining process of the working face, it is easy to chip and fall. , The occurrence of accidents such as roof fall, the stability of the coal wall seriously restricts the safe and efficient mining of coal seams. In order to isolate the broken roof from the coal wall, prevent the broken roof from falling during the lowering of the support and the coal wall slabs are harmful to the safety of workers, at present, telescopic front beams and fenders are used to top the steel mesh on the coal wall. The workers are in a fully enclosed state of support, roof and coal wall, effectively preventing mining accidents. However, the current laying of steel mesh is usually carried by operators directly and manually laid. The process is cumbersome, labor-intensive, and inefficient, making it impossible to achieve rapid mesh laying.

Summary of the invention

The purpose of the present invention is a guide rail type steel wire mesh transmission device and use method for soft coal seam working face, which can realize the rapid laying of steel wire mesh, is convenient and quick to operate, greatly reduces the labor intensity of operators, and greatly improves the laying of steel wire mesh effectiveness.

In order to achieve the above objectives, the present invention is achieved through the following technical solutions:

A guide rail type steel wire mesh transmission device for a working face in a soft coal seam, comprising a hydraulic support, a steel wire mesh, a net buckle and a guide rail; the hydraulic support is a supporting and shielding hydraulic support; the hydraulic support is arranged between the coal wall and the goaf , In order to realize the support and protection of the coal mining face; the guide rail is positioned and suspended at the inner front position of the hydraulic support; the steel wire mesh is laid on the hydraulic support; the rear of the steel wire mesh It is fixed at the bottom of the gangue in the goaf, and the front part is laid along the hydraulic support to the front end, so as to realize that the staff is in a completely enclosed environment formed by the hydraulic support and the steel wire mesh; It passes through the front end of the fender of the hydraulic support, and is connected to the steel wire mesh roll arranged on the guide rail through the net buckle, so as to realize the rapid laying of the steel wire mesh.

Further, the hydraulic support includes a fender, a telescopic beam, a top beam, a shield beam, a front column and a rear column; the fender, a telescopic beam, a top beam and a shield beam are connected end to end in sequence from front to back, and are connected with The mining work area of the coal seam is matched and arranged to form a supporting and shielding space; the piston rods of the front pillar and the rear pillar are respectively connected with the top beam.

Further, a plurality of hydraulic supports are arrayed along the length direction of the coal mining face in the mining work area of the coal seam.

Further, the net buckle has a double-headed buckle structure, so as to realize the hooking of the front and rear steel wire nets.

Further, the hooks at both ends of the net buckle are provided with an anti-dropping mechanism, the anti-dropping mechanism includes a closing plate and a torsion spring, one end of the closing plate is rotatably connected with the tail of the hook by a rotating shaft, and the other end is connected with the hook The inner side wall of the head abuts; the torsion spring is sleeved on the shaft, and the torsion arm of the torsion spring abuts the inner wall of the hook and the closing plate respectively, so as to realize the closing plate and the hook The elastic abutment, while realizing the automatic reset of the closed plate.

Further, the two ends of the guide rail in the axial direction are fixedly connected to the hydraulic supports at both ends, so as to realize the suspended arrangement of the guide rail on the inner side of the hydraulic support.

Further, the two axial ends of the guide rail are respectively fixedly connected to the hydraulic supports at both ends by ropes.

Further, a coal shearer is also provided; the coal shearer is connected to the hydraulic support through a front and rear telescopic device, so as to realize the overall forward and backward movement of the hydraulic support.

A method for using a guide rail type steel wire mesh transmission device for a soft coal seam working face. The specific steps of laying the steel wire mesh include:

(1) According to the distance that the hydraulic support needs to move forward, unwind the length of the steel mesh from the guide rail to match it;

(2) Connect the front end of the steel wire mesh that has been laid on the hydraulic support to the outer end of the steel wire mesh wound on the guide rail through a mesh buckle to realize the extended connection of the steel wire mesh;

(3) The shearer drives the hydraulic support forward through the front and rear telescopic devices;

(4) During the forward movement of the hydraulic support, the rear end of the steel wire mesh laid on the hydraulic support is fixedly arranged, and the front end of the hydraulic support pushes the extended steel wire mesh forward to realize the rapid laying of the steel wire mesh.

Compared with the prior art, the beneficial effects of the present invention are:

1. The present invention uses a net buckle and a guide rail. When in use, it only needs to pull out the steel net set on the guide rail and connect it to the front end of the laid steel net through the net buckle to realize the positioning of the outer end of the steel net , The steel mesh can be laid quickly and effectively, and the operation is convenient and quick, which greatly reduces the labor intensity of the operators and greatly improves the efficiency of the steel mesh laying.

2. The present invention has simple structure, economical and practical, reasonable design, and is suitable for wide promotion.

Of course, any product implementing the present invention does not necessarily need to achieve all the advantages described above at the same time.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are merely For some of the embodiments of the present invention, those of ordinary skill in the art can obtain other drawings based on these drawings without creative work.

Figure 1 is a schematic diagram of the guide rail type steel mesh transmission device of the present invention.

Figure 2 is a cross-sectional view of Figure A-A of the present invention;

Fig. 3 is a schematic diagram of the structure of the steel mesh in the laying state of the present invention;

4 is a schematic diagram of the structure of the net button in an embodiment of the present invention;

FIG. 5 is a schematic diagram of a net button connection structure in an embodiment of the present invention;

Figure 6 is a schematic diagram of the universal hook structure in Figure 5;

Figure 7 is a schematic diagram of the actual use structure of the universal hook in Figure 5;

Figure 8 is a cross-sectional view of the universal hook in Figure 5;

Explanation of labels in the figure:

1. Hydraulic support; 11. Protective board; 12. Telescopic beam; 13. Top beam; 14. Cover beam; 15. Front pillar; 16. Rear pillar; 2. Steel wire mesh; 3. Net buckle; 31. Hook; 32. Anti-fall mechanism; 4. Guide rail; 5. Coal seam; 6. Goaf; 7. Shearer; 8. Return air lane; 9. Transportation lane; 10. Rope; 30. Universal hook; 301 , Buckle; 302, rotating shaft; 303, hanging ring; 3011, fixed body; 3012, rotating body; 3013, pin shaft; 3014, tension spring.

detailed description

In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the embodiments of the present invention. Obviously, the described embodiments are part of the present invention. Examples, not all examples. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

With reference to Figures 1 to 8, the present invention will be further explained:

With reference to Figures 1, 2 and 3, a rail-type steel mesh transmission device for a soft coal seam working face includes a hydraulic support 1, a steel mesh 2, a mesh buckle 3, and a guide 4; the hydraulic support 1 is a supporting and shielding hydraulic Support 1; The hydraulic support 1 is arranged between the coal wall and the goaf 6 to realize the support and shielding of the coal mining face; the guide rail 4 is positioned and suspended in the inner front of the hydraulic support 1 The steel wire mesh 2 is laid above the hydraulic support 1; the rear part of the steel wire mesh 2 is fixed at the bottom of the gangue in the goaf 6, and the front part is laid along the hydraulic support 1 to the front end, thereby It is realized that workers are in a completely enclosed environment formed by the hydraulic support 1 and the steel wire mesh 2; the front end of the steel wire mesh 2 bypasses the front end of the fender 11 of the hydraulic support 1, and passes through the mesh buckle 3 and The steel wire mesh rolls arranged on the guide rail 4 are connected to realize the rapid laying of the steel wire mesh 2.

In the present invention, by setting the net buckle 3 and the guide rail 4, when in use, it only needs to pull out the steel wire net 2 arranged on the guide rail 4 and connect it to the front end of the laid steel net 2 through the net buckle 3 to realize the alignment. The positioning of the outer end of the steel mesh 2 can realize the rapid and effective laying of the steel mesh 2, which is convenient and quick to operate, greatly reduces the labor intensity of the operator, and greatly improves the efficiency of laying the steel mesh 2.

The hydraulic support 1 includes a fender 11, a telescopic beam 12, a top beam 13, a shield beam 14, a front pillar 15 and a rear pillar 16; the fender 11, a telescopic beam 12, a top beam 13, and a shield beam 14 have been After that, they are connected end to end in sequence, and matched with the mining work area of the coal seam 5 to form a supporting shelter space; the piston rods of the front pillar 15 and the rear pillar 16 are respectively connected with the top beam 13 to drive the top beam 13 move up and down.

A return air lane 8 and a transportation lane are arranged on both sides of the area to be mined in the coal seam 5.

Since there is a certain height difference between the upper and lower parts of the coal seam 5 during excavation, the multiple hydraulic supports 1 will also have a certain height difference when they are installed; at this time, the steel mesh roll can be from the upper end of the hydraulic support to the lower end. The roadway of the hydraulic support rolls around the axis to realize the transportation of the entire steel wire mesh roll, which is more convenient and saves time and effort.

A plurality of hydraulic supports 1 are arrayed along the length direction of the roadway in the mining work area of the coal seam 5.

With reference to FIG. 4, in one embodiment, the net buckle 3 is a double-headed hook structure with hooks 31 at both ends, so as to realize the hooking of two sections of steel wire netting 2;

Preferably, the hooks 31 at both ends of the net buckle 3 are provided with an anti-dropping mechanism 32, the anti-dropping mechanism 32 includes a closing plate and a torsion spring, one end of the closing plate is rotatably connected with the tail of the hook 31 through a rotating shaft, and the other One end abuts against the inner side wall of the head of the hook 31; the torsion spring is sleeved on the rotating shaft, and the torsion arm of the torsion spring abuts against the hook 31 and the inner side wall of the closing plate respectively, thereby The elastic abutment between the closing plate and the hook 31 is realized, and at the same time, the automatic reset of the closing plate is realized, which can effectively prevent the hook from being unhooked, and the hooking is convenient and quick.

The two axial ends of the guide rail 4 are fixedly connected to the hydraulic supports 1 at both ends, so as to realize the suspended arrangement of the guide rail 4 inside the hydraulic support 1;

Preferably, the axial ends of the guide rail 4 are respectively fixedly connected to the hydraulic support 1 at both ends by a rope 10; the rope 10 is equivalent to a flexible support, which facilitates the swing of the guide rail and the adjustment of the suspended position, and is connected to the entire steel wire Laying and adjusting.

The steel wire mesh 2 may be other metal meshes.

There is also a shearer 7; the shearer 7 is connected to the hydraulic support 1 through a front and rear telescopic device, so as to realize the overall forward and backward movement of the hydraulic support 1;

Preferably, the telescopic device may adopt a telescopic oil cylinder; the base of the telescopic oil cylinder is fixedly connected to the shearer 7, and the piston rod of the telescopic oil cylinder is fixedly connected to the base of the hydraulic support 1; and The coal machine 7 is fixedly arranged, and the hydraulic support 1 is moved forward and backward through a telescopic oil cylinder.

(1) First, according to the distance that the hydraulic support 1 needs to move forward, unwind the length of the steel mesh 2 that matches it from the guide rail 4;

(2) Connect the front end of the steel mesh 2 that has been laid on the hydraulic support 1 with the outer end of the steel mesh 2 wound on the guide rail 4 through the mesh buckle 3 to realize the extension connection of the steel mesh 2;

(3) Adjust the front column 15 and the rear column 16 on the hydraulic support 1 to realize the forward movement of the upper supporting and shielding structure of the hydraulic support 1;

(4) During the forward movement of the hydraulic support 1, the rear end of the steel mesh 2 laid on the hydraulic support 1 is fixed and fixed, and the front end of the hydraulic support 1 pushes the extended steel mesh to expand forward to realize the rapid expansion of the steel mesh. Extend the laying.

With reference to Figure 5, Figure 6, Figure 7 and Figure 8, in another embodiment, different from the above example, the net buckle 3 uses a universal hook 30, and the universal hook 30 includes a buckle 301 , A rotating shaft 302 and a hanging ring 303; one end of the rotating shaft 302 is fixedly connected to the upper end of the fixing body 3011 of the buckle 301; the hanging ring 303 is sleeved on the rotating shaft 302 through a lower sleeve part ; In this way, the hanging ring 303 can be respectively rotated around the rotating shaft 302 in the circumferential direction; the hanging ring 303 is sleeved with the mesh on the steel wire mesh 3, and the front buckle 301 is used to realize the opposite The mesh holes on the steel mesh 2 at one end are socketed, so as to realize the connection of the steel mesh 2 at both ends.

The buckle 301 includes a fixed body 3011, a rotating body 3012, a pin 3013, and a tension spring 3014; the pin 3013 axially passes through the upper ends of the fixed body 3011 and the rotating body 3012, thereby realizing the rotating body 3012 is coaxially connected to the upper end of the fixed body 3011 in rotation; one end of the tension spring 3014 is fixedly connected to the inner side wall of the fixed body 3011, and the other end is fixedly connected to the inner side wall of the rotating body 3012 to realize the The rotating body 3012 uses the fixed body 3011 as a spring seat; and in the natural state of the tension spring 3014, the lower ends of the fixed body 3011 and the rotating body 3012 are matched in size so that they are in a closed state; the operator only needs to move it by hand The rotating body 3012 can realize the opening and closing of the rotating body 3012 relative to the fixed body 3011; press the rotating buckle 301 of the net buckle 3 to the side of the fixed body 3011 with your fingers and rotate it to open, and the hook on the top of the fixed body 3011 Pass through the mesh on the steel mesh 2 and release your finger at the same time, the rotating buckle 301 springs back from the elongated opening in the lower part of the hook to the hook at the top of the fixed body 3011 to abut, thereby realizing the net buckle 3 is hung on the steel wire mesh 2 to be connected, and the operation is more convenient and quick; by setting the steel wire mesh with universal hooks, the quick connection between the steel wire meshes is greatly improved.

The invention has simple structure, convenient installation and operation, economical and practical, flexible use, reasonable design, compact structure, and is suitable for wide promotion.

Claims

A guide rail type steel mesh transmission device for a soft coal seam working face, which is characterized in that it comprises a hydraulic support (1), a steel mesh (2), a net buckle (3) and a guide rail (4); the hydraulic support (1) is a support Shielded hydraulic support (1); the hydraulic support (1) is arranged between the coal wall and the goaf (6) to realize the support and shielding of the coal mining face; the guide rail (4) is positioned and suspended At the inner front position of the hydraulic support (1); above the hydraulic support (1) is laid the steel wire mesh (2); the rear of the steel wire mesh (2) is fixed in the goaf (6) The bottom of the gangue, the front part is laid along the hydraulic support (1) to the front end, so as to realize that the staff is in a completely enclosed environment formed by the hydraulic support (1) and the steel wire mesh (2); The front end of the steel mesh (2) bypasses the front end of the fender (11) of the hydraulic support (1), and is connected to the steel mesh roll set on the guide rail (4) through the mesh buckle (3) , In order to realize the rapid laying of the steel mesh (2).
The guide rail type steel wire mesh transmission device for a soft coal seam working face according to claim 1, wherein the hydraulic support (1) includes a fender (11), a telescopic beam (12), a top beam (13), and a shield The beam (14), the front column (15) and the rear column (16); the apron (11), the telescopic beam (12), the top beam (13) and the shield beam (14) are connected end to end in sequence from front to back, It is matched with the mining work area of the coal seam (5) to form a supporting shielding space; the piston rods of the front pillar (15) and the rear pillar (16) are respectively connected with the top beam (13).
The guide rail type steel wire mesh transmission device for a soft coal seam working face according to claim 1, characterized in that: the mining work area of the coal seam (5) is arrayed with a plurality of hydraulic supports (1) along the length direction of the coal mining face .
The guide rail type steel wire mesh transmission device for the soft coal seam working face according to claim 1, wherein the net buckle (3) is a double-head hanging buckle structure, so as to realize the hanging of the front and rear two steel meshes (2) Pick up.
The guide rail type steel wire mesh transmission device for the soft coal seam working face according to claim 1, wherein the hooks (31) at both ends of the net buckle (3) are provided with an anti-drop mechanism (32), and the anti-drop mechanism ( 32) It includes a closing plate and a torsion spring, one end of the closing plate is rotatably connected with the tail of the hook (31) through a rotating shaft, and the other end abuts against the inner wall of the head of the hook (31); the torsion spring is sleeved On the rotating shaft, and the torsion arms of the torsion spring respectively abut the hook (31) and the inner side wall of the closing plate, so as to realize the elastic abutment of the closing plate and the hook (31), and simultaneously realize Automatic reset of the closed plate.
The guide rail type steel wire mesh transmission device for the soft coal seam working surface according to claim 1, characterized in that: the axial ends of the guide rail (4) are fixedly connected with the hydraulic supports (1) at both ends to realize the The guide rail (4) is suspended on the inner side of the hydraulic support (1).
The rail-type steel mesh transmission device for a soft coal seam working surface according to claim 1, wherein the axial ends of the guide rail (4) are respectively fixedly connected to the hydraulic supports (1) at both ends by ropes (10).
The guide rail type steel wire mesh transmission device for the soft coal seam face according to claim 1, characterized in that: a shearer (20) is also provided; the shearer (20) is connected to the hydraulic support ( 1) Connection, so as to realize the overall forward and backward movement of the hydraulic support (1).
A method for using a rail-type steel mesh transmission device for a soft coal seam working face, using the rail-type steel mesh transmission device for a soft coal seam working surface according to any one of claims 1-8, and the specific steps of laying the steel mesh include:

(1) According to the distance that the hydraulic support (1) needs to move forward, unwind the length of the steel mesh (2) from the guide rail (4) to match it;

(2) Connect the front end of the steel mesh (2) that has been laid on the hydraulic support (1) through the mesh buckle (3) and the outer end of the steel mesh (2) wound on the guide rail (4) to realize the steel mesh ( 2) Extension connection;

(3) The shearer (20) drives the hydraulic support (1) forward through the front and rear telescopic devices;

(4) During the forward movement of the hydraulic support (1), the steel mesh (2) is laid on the hydraulic support (1) and the rear end is fixed, and the front end of the hydraulic support (1) pushes the extended steel mesh forward , In order to realize the rapid laying of steel mesh.