Portable underground stope caving protection device and using method thereof

Abstract

The invention discloses a portable underground stope caving protection device and a using method thereof, and belongs to the technical field of mining engineering. The portable underground stope caving protection device comprises a pneumatic supporting structure, a top anti-caving structure and a triangular support; the upper end of the pneumatic supporting structure is connected with the top anti-falling structure, and the lower end of the pneumatic supporting structure abuts against a stope bottom plate and is used for supporting the top anti-falling structure to abut against a stope top plate. The triangular support is arranged on the lower portion of the pneumatic supporting structure and used for supporting the pneumatic supporting structure and preventing toppling. According to the pneumatic supporting structure, the pneumatic mast pneumatically pushes the anti-falling device to achieve roof contact in the limited space restrained in the vertical or inclined direction, further deformation of the stope roof can be effectively prevented, the working safety of the stope roof is greatly improved, the personal safety of workers is greatly improved, and the working efficiency is improved. The method has the characteristics of simple construction process, high efficiency, high quality and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of mining engineering, and more particularly relates to a portable underground stope fall protection device and a use method thereof. Background Art

[0002] In the field of coal and non-coal mining engineering, ground pressure activities are frequent after mining, and the overall safety situation of the mine is not optimistic. If the roof of the goaf falls on a large scale, it will cause serious damage. At the same time, with the increase in mining depth, problems such as increasingly serious deformation and damage of the goaf roof and poor stability are often encountered, resulting in the frequency of roof collapse accidents and the degree of disasters becoming more and more serious, seriously endangering the safety of underground personnel and equipment. As one of the three major underground mining methods, the open-pit mining method has always occupied an important position. In the process of underground mining, the open-pit method is prone to collapse accidents. Workers often work under the open pit and wear safety helmets and back armor for protection. This protective measure can only provide local protection for workers and cannot effectively protect them as a whole. Therefore, conventional protective measures have great safety hazards and are prone to casualties.

[0003] At present, single hydraulic props or hydraulic supports are usually used to support the roof in coal mines. When using single hydraulic props for support, multiple props are needed to achieve the desired effect, which is costly, heavy, and not portable. When using hydraulic supports to support the coal mining face, hundreds of hydraulic supports are needed, which are very costly, heavy, and not applicable to personal protection. Therefore, how to provide a portable underground mine fall protection device and its use method is a problem that technicians in this field need to solve urgently. Summary of the invention

[0004] In view of this, the present invention provides a portable underground mine fall protection device and a method of using the same, which can achieve an overall protection effect. Workers are protected by the device, which is safer than conventional local protection measures. The device has the advantages of safety, portability, light weight and low cost.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] A portable underground mine fall protection device comprises a pneumatic support structure, a top anti-fall structure and a triangular bracket; the upper end of the pneumatic support structure is connected to the top anti-fall structure, and the lower end abuts against the mine floor, so as to support the top anti-fall structure against the mine roof; the triangular bracket is arranged at the lower part of the pneumatic support structure to support the pneumatic support structure and prevent it from tipping over.

[0007] Furthermore, the pneumatic support structure includes a base, a pneumatic mast, an air pipe, an air pump and a control system; the base is supported on the mining floor, the fixed end of the pneumatic mast is fixed on the base, and the movable end is connected to the top anti-falling structure through a multi-directional rotating wheel; the multi-directional rotating wheel is a hemispherical structure, fixed at the lower end of the top anti-falling structure, and the movable end of the pneumatic mast is provided with a spherical groove compatible with the multi-directional rotating wheel; one end of the air pipe is connected to the pneumatic mast and the other end is connected to the air pump, which is used to provide pneumatic power to the cylinder; the control system is electrically connected to the air pump, which is used to control the opening and closing of the air pump.

[0008] Furthermore, the pneumatic mast includes a multi-stage cylinder, and the cylinder is supported by high-quality aluminum alloy; one end of the air pipe is connected to the lowest stage cylinder.

[0009] Furthermore, the top anti-falling structure includes a retractable railing and an opening and closing handle; the retractable railing includes multiple groups of connecting rods and pull rods; each group of connecting rods includes two connecting rods rotatably connected to form an X shape through a central rotating shaft; the ends of the connecting rods in two adjacent groups of connecting rods are correspondingly connected in rotation; the outer ends of the connecting rods in the two groups of connecting rods arranged at the two ends are rotatably connected with the pull rods arranged at the two ends; the opening and closing handles are arranged on the outer end surfaces of the two pull rods; the multi-directional rotating wheel is arranged at the bottom of the central rotating shaft of the middle connecting rod group.

[0010] Furthermore, the triangular bracket includes a plurality of groups of support frames evenly arranged along the circumference of the pneumatic mast; each group of the support frames includes a main support rod and a secondary support rod; the main support rod and the secondary support rod are both inclined; the upper end of the main support rod is rotatably connected to the pneumatic mast, and the lower end abuts against the mining floor; the upper end of the secondary support rod is rotatably connected to the middle part of the main support rod, and the lower end is rotatably connected to the base.

[0011] A method for using a portable underground stope fall protection device comprises the following steps:

[0012] Step 1: Select the working position inside the stope, and move the underground stope fall protection device to the stope floor below the stope roof where the operation is required;

[0013] Step 2: Open the triangular support to effectively support the stope fall protection device;

[0014] Step 3: The control system starts the air pump, compresses the air to lift the pneumatic mast, and raises the top anti-falling structure;

[0015] Step 4: When the pneumatic mast rises to a certain height, the retractable railing is extended by opening and closing the handle, and the angle of the top anti-falling structure is adjusted by the multi-directional rotating wheel. The pneumatic mast is lifted to make the retractable railing fit the roof of the mine.

[0016] The beneficial effects of the present invention are:

[0017] Compared with traditional safety helmets and back armor, the present invention has a simple structure. The power provided by compressed gas is used to make the pneumatic mast generate a large, continuous and stable axial force, thereby promoting the top anti-falling device to effectively and actively support. The pneumatic mast pushes the top anti-falling device to connect with the top plate of the mining field, so as to achieve rapid and effective connection between the top anti-falling structure and the top plate of the mining field. For the local top plate with poor stability in the underground mining field, the active support can generate a certain pre-support force on the top plate, which can effectively prevent the mining field top plate from further deformation. Compared with simple passive support, the safety of mining field top plate operation has been greatly improved, which greatly increases the personal safety of workers. It has the characteristics of simple construction process, high efficiency and high quality. The pneumatic mast is used to pneumatically push the anti-falling device in a limited space constrained in the vertical or inclined direction to achieve top connection. The multi-section pneumatic mast makes the anti-falling device have a longer top connection stroke. The protective device of the present invention has a simple structure, low processing accuracy requirements, relatively safe gas, and low device cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a structural schematic diagram of the top anti-falling structure of the present invention.

[0021] Among them, in the figure: 1- mining field roof; 2-top space; 3-multi-directional rotating wheel; 4-pneumatic mast; 5-cylinder; 6-air pipe; 7-air pump; 8-control device; 9-retractable railing; 10-opening and closing handle; 11-triangular bracket; 12-mining field floor. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Please see attached Figure 1-2The present invention provides a portable underground mine fall protection device, including a pneumatic support structure, a top anti-fall structure and a triangular bracket 11; the upper end of the pneumatic support structure is connected to the top anti-fall structure, and the lower end abuts against the mine floor 12, which is used to support the top anti-fall structure against the mine roof 1 to prevent the mine roof 1 from collapsing; the triangular bracket 11 is arranged at the lower part of the pneumatic support structure to support the pneumatic support structure to prevent tipping.

[0024] The pneumatic support structure includes a base, a pneumatic mast 4, an air pipe 6, an air pump 7 and a control system 8; the base is supported on the bottom plate of the mining area, the fixed end of the pneumatic mast 4 is fixed on the base, and the movable end is connected to the top anti-falling structure through a multi-directional rotating wheel 3; the multi-directional rotating wheel 3 is a hemispherical structure, which is fixed to the lower end of the top anti-falling structure, and the movable end of the pneumatic mast 4 is provided with a spherical groove adapted to the multi-directional rotating wheel 3. After being engaged with the multi-directional rotating wheel 3, the top anti-falling structure can be rotated a certain angle along the movable end of the pneumatic mast 4, so that the top anti-falling structure can better fit the mining area top plate 1.

[0025] The pneumatic mast 4 includes a multi-stage cylinder 5, and the cylinder 5 is supported by high-quality aluminum alloy; one end of the air pipe 6 is connected to the lowest-stage cylinder 5, and the other end is connected to the air pump 7, which is used to provide air pressure power for the cylinder 5; the control system 8 is electrically connected to the air pump 7, and is used to control the opening and closing of the air pump 7. The control system 8 controls the opening of the air pump 7, and provides air pressure power to the cylinder 5 through the air pipe 6, so that the upper-stage cylinder 5 moves upward to lift up the top anti-falling structure, so that the top anti-falling structure supports the mining field roof 1.

[0026] The top anti-falling structure includes a retractable railing 9 and an opening and closing handle 10; the retractable railing 9 includes multiple groups of connecting rods and pull rods; each group of connecting rods includes two connecting rods connected to form an X shape by a central rotating shaft; the ends of the connecting rods in two adjacent groups of connecting rods are correspondingly connected in rotation; the outer ends of the connecting rods in the two groups of connecting rods arranged at the two ends are connected in rotation with the pull rods arranged at the two ends; the opening and closing handle 10 is arranged on the outer end surfaces of the two pull rods; when the opening and closing handle 10 is pulled, the connecting rods of the retractable railing 9 rotate relative to each other, so that the entire top anti-falling structure is extended, and the area of ​​the top plate 1 of the mining field is expanded. At the same time, during the stretching process, the gap formed by the stretching movement of the railing provides space for workers to work on the top plate. The multi-directional rotating wheel 3 is arranged at the bottom of the central rotating shaft of the middle connecting rod group, so that the center of gravity of the top anti-falling structure falls to the moving end of the pneumatic mast 4.

[0027] The triangular support 11 includes multiple groups of support frames evenly arranged along the circumference of the pneumatic mast 4; each group of the support frames includes a main support rod and a secondary support rod; the main support rod and the secondary support rod are both inclined; the upper end of the main support rod is rotatably connected to the pneumatic mast 4, and the lower end abuts against the mining floor; the upper end of the secondary support rod is rotatably connected to the middle of the main support rod, and the lower end is rotatably connected to the base. After the base is placed in a suitable position, the triangular support 11 can be opened, and the lower end of the main support rod is supported around the base. The rotatably connected main support rod and secondary support rod enable the triangular support 11 to stably support the pneumatic mast 4 on the mining floor.

[0028] The method for using the portable underground stope fall protection device of the present invention comprises the following steps:

[0029] Step 1: Select the working position inside the stope, move the underground stope fall protection device to the stope floor 12 below the stope roof 1 where the operation is required, and try to keep the roof 1 and the stope floor 12 flat before the operation;

[0030] Step 2: After the underground stope fall protection device is moved to below the roof 1 where the operation is required, the device is adjusted to a suitable position, and then the triangular support 11 is opened to effectively support the stope fall protection device to achieve the effect of stabilizing the device;

[0031] Step 3: connect the pneumatic device with the air pump 7 and the control device 8 through the air pipe 6, send the gas into the pneumatic mast 4 through the air pipe 6, and adjust the internal air pressure to control the contact degree between the railing 9 and the top plate 1. When the pneumatic mast 4 needs to rise, the control system 8 starts the air pump 7, and compresses the air to lift the pneumatic mast 4, thereby raising the top anti-falling structure;

[0032] Step 4: When the pneumatic mast 4 rises to a certain height, the worker extends the retractable railing 9 by opening and closing the handle 10, and the pneumatic mast 4 is lifted to make the retractable railing 9 closely contact and fit with the mine roof 1, thereby obtaining a supporting force for the mine roof 1, and adjusting the angle of the top anti-falling structure by the multi-directional rotating wheel 3 so as to fit more closely with the mine roof 1.

[0033] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0034] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A portable underground stope fall protection device, characterized in that: It comprises a pneumatic support structure, a top anti-falling structure and a triangular support (11); the upper end of the pneumatic support structure is connected to the top anti-falling structure, and the lower end abuts against the mining floor (12), so as to support the top anti-falling structure to abut against the mining floor (1); the triangular support (11) is arranged at the lower part of the pneumatic support structure to support the pneumatic support structure and prevent it from tipping over.

2. A portable underground mine fall protection device according to claim 1, characterized in that: The pneumatic support structure comprises a base, a pneumatic mast (4), an air pipe (6), an air pump (7) and a control system (8); the base is supported on the bottom plate of the mining field, the fixed end of the pneumatic mast (4) is fixed on the base, and the movable end is connected to the top anti-falling structure through a multi-directional rotating wheel (3); the multi-directional rotating wheel (3) is a hemispherical structure, fixedly arranged at the lower end of the top anti-falling structure, and the movable end of the pneumatic mast (4) is provided with a spherical groove matched with the multi-directional rotating wheel (3); one end of the air pipe (6) is connected to the pneumatic mast (4) and the other end is connected to the air pump (7), so as to provide air pressure power for the cylinder (5); the control system (8) is electrically connected to the air pump (7), so as to control the opening and closing of the air pump (7).

3. A portable underground mine fall protection device according to claim 2, characterized in that: The pneumatic mast (4) comprises a multi-stage cylinder (5), wherein the cylinder (5) is supported by high-quality aluminum alloy; one end of the air pipe (6) is connected to the cylinder (5) at the lowest stage.

4. A portable underground mine fall protection device according to claim 2, characterized in that: The top anti-falling structure comprises a retractable railing (9) and an opening and closing handle (10); the retractable railing (9) comprises a plurality of connecting rod groups and pull rods; each connecting rod group comprises two connecting rods connected to form an X shape by a central rotating shaft; the ends of the connecting rods in two adjacent connecting rod groups are connected to each other in a corresponding rotational manner; the outer ends of the connecting rods in the two connecting rod groups arranged at the two ends are connected to the pull rods arranged at the two ends in a rotational manner; the opening and closing handle (10) is arranged on the outer end surfaces of the two pull rods; the multi-directional rotating wheel (3) is arranged at the bottom of the central rotating shaft of the middle connecting rod group.

5. A portable underground mine fall protection device according to claim 2, characterized in that: The triangular support (11) includes a plurality of groups of support frames uniformly arranged along the circumference of the pneumatic mast (4); each group of the support frames includes a main support rod and a secondary support rod; the main support rod and the secondary support rod are both inclined; the upper end of the main support rod is rotatably connected to the pneumatic mast (4), and the lower end abuts against the mining floor; the upper end of the secondary support rod is rotatably connected to the middle part of the main support rod, and the lower end is rotatably connected to the base.

6. A method for using a portable underground stope fall protection device according to any one of claims 1 to 5, characterized in that: The following steps are involved: Step 1: Selecting a working position inside the stope, and moving the underground stope fall protection device to the stope floor (12) below the stope roof (1) where the operation is required; Step 2: Open the triangular support (11) to effectively support the stope fall protection device; Step 3: The control system (8) starts the air pump (7) to compress the air to lift the pneumatic mast (4) and raise the top anti-falling structure; Step 4: When the pneumatic mast (4) rises to a certain height, the retractable railing (9) is extended by opening and closing the handle (10), and the angle of the top anti-falling structure is adjusted by the multi-directional rotating wheel (3). The pneumatic mast (4) is lifted to make the retractable railing (9) fit with the mining area roof (1).

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