CN206092028U - Colliery driving face support equipment - Google Patents

Abstract

The utility model belongs to the technical field of support devices for coal mine mining, in particular to a support device for coal mine excavation working face, which comprises three brackets and nine sets of mounting brackets. There are threaded holes, and the mounting frame includes two screw rods and a supporting plate. The upper end of the screw rod is screwed into the threaded hole. Screwed with the installation hole, the screw rod is provided with a first fixing nut at the bottom of the supporting plate, and a front probe beam is provided between the support plate and the bracket. The axis direction of the front probe beam is consistent with the direction of tunneling. A cylinder is detachably installed, and a fixed hook is fixedly installed at the end of the piston rod of the cylinder. Its purpose is to solve the problems of cumbersome operation due to structural design defects of existing coal mine tunneling face support equipment, poor support effect of tunneling face, certain hidden safety hazards in empty top operation, and accident-prone problems.

Description

A support device for coal mine excavation working face

technical field

The utility model belongs to the technical field of support devices for coal mine mining, in particular to a support device for a coal mine driving face.

Background technique

As the demand for coal increases, the depth of mining increases unabated, making the geological environment worse. With the increase of ground stress, the ground temperature continues to rise, accidents occur frequently in the middle of the project, and the number of vicious accidents increases. In order to successfully mine underground resources To avoid dangers and disasters, the staff must have the concept of mine production safety as the primary concept. In order to meet the needs of production and the smooth progress of various tasks in coal mines, it is necessary to frequently arrange the excavation face. The excavation face needs to be equipped with temporary support equipment to ensure construction safety. After years of development, various types of temporary support equipment have been designed. Supporting equipment, according to different structural forms, mainly includes: temporary support for the front probe beam, scaffolding machine, self-moving roadway support and airborne bolter, etc. At present, certain measures have been taken in terms of temporary support for underground tunneling in coal mines, and to a certain extent, the safety of the tunneling face has been ensured. The protection is usually an empty roof operation, and there will inevitably be potential safety hazards. Therefore, in order to solve the unsafe problem of workers setting up temporary supports under the empty roof, some mines have adopted simple front beam support. The so-called front beam support is to install a metal front beam under the roof beam of the permanent support of the roadway. After a certain distance is excavated, the front beam is pushed out to the excavation work face, and the front beam and the roof are backed by wooden boards and wedges. , Under the cover of the front probe beam, carry out operations such as gangue extraction and shed erection. The structure of the existing probing beam support equipment used in the coal mine excavation working face is relatively complex, the operation is relatively cumbersome, the movable range of the probing beam is relatively narrow, and the support effect of the excavation working face is poor, resulting in certain safety hazards in the empty roof operation , prone to accidents.

Utility model content

The purpose of this utility model is: to provide a coal mine excavation working face support equipment, which is used to solve the structural design defects of the existing coal mine excavation working face support equipment. There are still certain potential safety hazards in the jacking operation, and accidents are prone to occur.

For realizing above-mentioned technical purpose, the technical scheme that the utility model adopts is as follows:

A support device for a coal mine excavation working face, comprising a support and a mounting frame, the support is arched, three supports are provided along the excavation direction of the tunnel, and a plurality of grooves are uniformly provided on the support along the circumference, The bracket is provided with threaded holes at the bottom of the groove, and the number of detachably connected mounting brackets on each bracket is three groups, and the mounting brackets include two vertically arranged screw rods and a horizontally arranged supporting plate, The upper end of the screw rod is screwed to the threaded hole, and the top end of the screw rod is fixed with a limit cap, and the limit cap is located in the groove, and the left and right ends of the supporting plate are provided with mounting holes. The screw rod is screwed to the mounting hole, and the screw rod is provided with a first fixing nut at the bottom of the supporting plate, and a forward beam is arranged between the supporting plate and the bracket, and the axial direction of the forward exploring beam is in line with the direction of the tunneling roadway. The direction of excavation is the same, and the front beam is an inverted V-shaped structure, and a cylinder is detachably installed in the front beam, and a fixed hook is fixedly installed at the end of the piston rod of the cylinder.

The utility model adopting the above-mentioned technical scheme can screw the two screw rods of the installation frame into the two adjacent threaded holes at suitable positions according to the specific conditions in the tunnel, and make the bottom of the limit cap just in line with the concave hole. The bottom of the groove is offset, and then the supporting plate and the front probe beam are installed. By placing the screw rods in two adjacent grooves at different positions, the positions of the three sets of mounting brackets can be adjusted conveniently, and then the position of the front probe beam can be adjusted. The purpose of making the front beam has a wider range of activities, which enhances the support effect of the tunneling face to a certain extent and reduces potential safety hazards. The support equipment for the coal mine excavation working face has a simple structure, convenient and flexible operation, can support the roof rock, ensures the stability of the roadway, and solves the unsafe problem of workers setting up temporary supports under the empty roof.

It is further defined that the two ends of the cylinder barrel of the cylinder are fixed with a mounting plate, the position corresponding to the mounting plate in the front probe beam is provided with an ear plate, the ear plate and the mounting plate are pierced with bolts, and the two ends of the bolt are The end is provided with a second fixing nut, such a structural design, simple in structure, firm in installation, and convenient for installation and fixation of the cylinder.

It is further defined that the lug plate includes a first lug plate, a second lug plate, a third lug plate and a fourth lug plate, the first lug plate and the second lug plate are connected to the left inner wall of the front probe beam, and the The third lug plate and the fourth lug plate are connected with the right inner wall of the front probe beam. This structural design strengthens the cylinder through the first lug plate, the second lug plate, the third lug plate and the fourth lug plate in different positions. The firmness of the installation makes the whole device more stable when working.

It is further defined that the first lug plate, the second lug plate, the third lug plate and the fourth lug plate are all welded to the front probe beam, such a structural design makes the first lug plate, the second lug plate, the third lug plate The connection between the plate and the fourth lug plate and the front probe beam is more firm.

It is further defined that the lower end of the bracket is pierced with an anchor rod, and the anchor rod strengthens the firmness of the bracket installed in the tunnel.

It is further defined that the screw rod is welded to the limit cap, and such a structural design makes the connection between the screw rod and the limit cap stronger.

Description of drawings

The utility model can be further illustrated by the non-limitative embodiments provided by the accompanying drawings;

Fig. 1 is the structure schematic diagram of a kind of coal mine driving face supporting equipment embodiment of the utility model;

Fig. 2 is a schematic diagram of the axial installation structure of the cylinder and the front probe beam in Fig. 1;

Fig. 3 is the enlarged structural representation of the lateral installation of the cylinder and the front probe beam in Fig. 1;

The main component symbols are explained as follows:

Bracket 1, groove 2, screw rod 31, supporting plate 32, limit cap 33, first fixing nut 34, front probe beam 4, cylinder 5, fixing hook 6, mounting plate 71, bolt 72, second fixing nut 73 , the first ear plate 741 , the second ear plate 742 , the third ear plate 743 , the fourth ear plate 744 , and the anchor rod 8 .

detailed description

In order to enable those skilled in the art to better understand the utility model, the technical solution of the utility model will be further described below in conjunction with the drawings and embodiments.

As shown in Fig. 1, Fig. 2 and Fig. 3, a kind of coal mine excavation working face supporting equipment of the present utility model comprises a support 1 and a mounting frame, the support 1 is arched, and the support 1 is provided with three , the bracket 1 is evenly provided with a plurality of grooves 2 along the circumferential direction, and the bracket 1 is provided with threaded holes at the bottom of the grooves 2, and the number of detachably connected mounting brackets on each bracket 1 is three groups, and the mounting brackets include two vertical The screw mandrel 31 of straight setting and the supporting plate 32 of horizontal setting, the upper end of screw mandrel 31 is screwed with threaded hole, and the top of screw mandrel 31 is fixedly provided with limit cap 33, and limit cap 33 is positioned at groove 2, and supporting plate 32 Mounting holes are provided at the left and right ends of the mounting hole, and the screw rod 31 is screwed to the mounting hole. The screw rod 31 is provided with a first fixing nut 34 at the bottom of the supporting plate 32, and a front probe beam 4 is provided between the supporting plate 32 and the bracket 1. , the axial direction of the front probe beam 4 is consistent with the direction of excavation of the roadway, the front probe beam 4 is an inverted V-shaped structure, the front probe beam 4 is detachably installed with a cylinder 5, and the end of the piston rod of the cylinder 5 is fixedly installed with a fixed hook 6.

Preferably, the two ends of the cylinder barrel of the cylinder 5 are fixed with a mounting plate 71, and the position corresponding to the mounting plate 71 in the front probe beam 4 is provided with an ear plate, and the ear plate and the mounting plate 71 are pierced with bolts 72, and the two ends of the bolt 72 A second fixing nut 73 is provided. Such a structural design is simple in structure, reliable in installation, and convenient for installation and fixing of the cylinder 5 . It should be pointed out that the installation structure of the cylinder 5 and the front beam 4 can also be considered according to specific conditions, as long as the detachable installation of the cylinder 5 and the front beam 4 can be realized.

Preferably, the lugs include a first lug 741, a second lug 742, a third lug 743 and a fourth lug 744, the first lug 741 and the second lug 742 are connected to the left inner wall of the front beam 4 , the third ear plate 743 and the fourth ear plate 744 are connected to the right inner wall of the front probe beam 4. Such a structural design, through the first ear plate 741, the second ear plate 742, the third ear plate 743 and the The fourth ear plate 744 strengthens the firmness of the installation of the cylinder 5, making the whole device more stable when working. In fact, the number and distribution structure of the lug plates can also be considered according to specific conditions, as long as the cylinder 5 can be firmly installed in the front probe beam 4 .

Preferably, the first ear plate 741, the second ear plate 742, the third ear plate 743 and the fourth ear plate 744 are all welded to the front probe beam 4, such a structural design makes the first ear plate 741, the second ear plate 742, the third ear plate 743 and the fourth ear plate 744 are more firmly connected to the front beam 4. In fact, it is also possible to consider how the first ear plate 741 , the second ear plate 742 , the third ear plate 743 and the fourth ear plate 744 are all connected to the front beam 4 according to specific conditions.

Preferably, the lower end of the bracket 1 is pierced with an anchor rod 8, and the anchor rod 8 strengthens the firmness of the bracket 1 installed in the tunnel. In fact, the reinforcement method of the bracket 1 can also be specifically considered according to specific conditions.

Preferably, the screw rod 31 is welded to the limit cap 33 , such a structural design makes the connection between the screw rod 31 and the limit cap 33 stronger. It should be pointed out that the connection manner between the screw rod 31 and the limit cap 33 can also be considered according to specific conditions.

The working conditions of the support equipment for the coal mine tunneling face are as follows: when the tunneling face of the tunneling roadway reaches the minimum control top distance, according to the specific conditions in the tunneling roadway, the two screw rods 31 of the mounting frame are respectively screwed into suitable positions In the two adjacent threaded holes, and make the bottom of the limit cap 33 just against the bottom of the groove 2, thus complete the connection between the screw mandrel 31 and the bracket 1, and then install the supporting plate 32 on the screw mandrel 31, When the supporting plate 32 is installed, care should be taken to ensure that the supporting plate 32 is in a horizontal state, and then the front probe beam 4 is placed on the supporting plate 32. At this time, attention should be paid to ensure that the long axis direction of the front probe beam 4 should be in line with the direction of the excavation roadway. The direction is consistent, and the installation of the support equipment for the tunneling working face is completed, and then the fixed hook 6 at the end of the piston rod of the cylinder 5 is fixed on the support 1 away from the working face; when the tunneling construction reaches the maximum control distance required by the regulations, The cylinder 5 is inflated to pull the fixed hook 6, thereby driving the front probe beam 4 to move forward, thereby moving the front probe beam 4 to the wall of the excavation work face to meet the required temporary support safety space. After the empty roof support work is completed, the The third support 1 at the rear is moved forward to the first support 1 newly established for installation, and the excavation construction is continued, thereby completing a excavation cycle.

In the coal mine excavation working face supporting equipment of this embodiment, by placing the screw rod 31 in two adjacent grooves 2 at different positions, the positions of the three sets of mounting frames can be adjusted conveniently, and then the position of the front probe beam 4 can be adjusted. The purpose of making the front probe beam 4 has a wider range of activities, which enhances the support effect of the excavation face to a certain extent and reduces potential safety hazards. The support equipment for the coal mine excavation working face has a simple structure, convenient and flexible operation, can support the roof rock, ensures the stability of the roadway, and solves the unsafe problem of workers setting up temporary supports under the empty roof.

The above-mentioned embodiments only illustrate the principles and effects of the present utility model, but are not intended to limit the present utility model. Anyone familiar with this technology can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed in the utility model should still be covered by the claims of the utility model.

Claims (6)

1. A support device for a coal mine driving face, comprising a support (1) and a mounting frame, characterized in that: the support (1) is arched, and the support (1) is provided with three , the bracket (1) is evenly provided with a plurality of grooves (2) along the circumference, and the bottom of the bracket (1) is provided with a threaded hole, and each bracket (1) can be The number of mounting brackets to be disassembled and connected is three groups, and the mounting brackets include two vertical screw rods (31) and horizontally arranged supporting plates (32), and the upper ends of the screw rods (31) are screwed into the threaded holes. , the top of the screw rod (31) is fixed with a limit cap (33), the limit cap (33) is located in the groove (2), and the left and right ends of the supporting plate (32) are provided with installation hole, the screw mandrel (31) is screwed to the mounting hole, the screw mandrel (31) is provided with a first fixing nut (34) at the bottom of the supporting plate (32), and the supporting plate (32) is connected to the bracket ( 1) There is a forward probe beam (4) between them, the axis direction of the forward probe beam (4) is consistent with the driving direction of the roadway, the forward probe beam (4) is an inverted V-shaped structure, and the forward probe beam (4) A cylinder (5) is detachably installed in the beam (4), and a fixed hook (6) is fixedly installed at the end of the piston rod of the cylinder (5). 2. A support device for coal mine excavation working face according to claim 1, characterized in that: the two ends of the cylinder (5) are fixed with mounting plates (71), and the front probe beam (4) The position corresponding to the mounting plate (71) is provided with an ear plate, the ear plate and the mounting plate (71) are pierced with bolts (72), and the two ends of the bolt (72) are provided with second fixing nuts (73 ). 3. A coal mine excavation working face support device according to claim 2, characterized in that: the ear plate comprises a first ear plate (741), a second ear plate (742), a third ear plate (743 ) and the fourth ear plate (744), the first ear plate (741), the second ear plate (742) are connected with the left inner wall of the front probe beam (4), the third ear plate (743), the second ear plate (742) The four ear plates (744) are connected with the right inner wall of the front probe beam (4). 4. A coal mine driving face support device according to claim 3, characterized in that: the first ear plate (741), the second ear plate (742), the third ear plate (743) and the first ear plate (743) Four ear plates (744) are all welded with the front probe beam (4). 5. A coal mine driving face support device according to claim 1 or 4, characterized in that: the lower end of the support (1) is pierced with a bolt (8). 6. A coal mine driving face support device according to claim 5, characterized in that: the screw rod (31) is welded to the limit cap (33).