Underground coal mine ventilation opening protection structure

Abstract

The utility model discloses an underground coal mine ventilation opening protection structure, which belongs to the technical field of ventilation opening protection, and comprises a protection net and a shell, the protection net is fixedly connected to one side of the shell, a bevel gear wheel is rotatably connected in the shell, the bevel gear wheel is meshed with a bevel pinion, and the bevel pinion is meshed with the protection net. The small bevel gear is rotationally connected to the shell, a plurality of clamping sliding blocks are slidably connected to the side, away from the protective net, of the shell, the clamping sliding blocks are connected with the large bevel gear through a pushing mechanism, and the sides, away from the large bevel gear, of the clamping sliding blocks are fixedly connected with a lower clamping plate. The problems that an existing protective net is extremely tedious in installation step, cannot be disassembled at any time according to working conditions after being installed, cannot be suitable for pipelines with different diameters and cannot be reused after being used are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of ventilation port protection, especially relates to a coal mine underground ventilation port protection structure. BACKGROUND

[0002] The basic task of mine ventilation is to supply fresh air underground to meet the oxygen needs of personnel, dilute harmful gases and dust underground to ensure safe production, and adjust the climate underground to create a good working environment. In order to achieve the purpose of mine ventilation, dedicated ventilation duct facilities are usually set up in the mine to promote the normal flow of air in the mine to replace it, thereby avoiding accidents and protecting people's lives and property safety.

[0003] In normal use, to avoid other things entering the mine ventilation duct under abnormal working conditions, protective nets and other protective facilities are usually set up at the mine ventilation port to prevent safety accidents caused by other things entering the mine ventilation duct. However, the traditional protective net is usually connected to the mine ventilation port in a fixed way, and the installation steps are extremely cumbersome. After installation, it cannot be disassembled at any time according to the working condition, and it cannot be applied to different diameter pipes. After use, most of them cannot be reused, which brings great inconvenience to the installation and use of the mine ventilation port protective net. Therefore, a new type of coal mine underground ventilation port protection structure is needed. UTILITY MODEL CONTENTS

[0004] In view of the problems existing in the prior art, the utility model provides a coal mine underground ventilation port protection structure, which has the advantages of convenient installation and disassembly, can be applied to mine ventilation ports of different diameters, and can be reused. The problems of the existing protective net installation steps being extremely cumbersome, being unable to be disassembled at any time according to the working condition after installation, being unable to be applied to pipes of different diameters, and most of them being unable to be reused after use are solved.

[0005] The utility model is implemented in this way. A coal mine underground ventilation port protection structure includes a protective net, a shell, the protective net is fixedly connected to one side of the shell, a large bevel gear is rotatably connected in the shell, the large bevel gear is meshed with a small bevel gear, the small bevel gear is rotatably connected to the shell, a plurality of clamping sliding blocks are slidably connected to the side of the shell away from the protective net, the clamping sliding blocks are connected with the large bevel gear through a pushing mechanism, and a lower clamping plate is fixedly connected to the side of the clamping sliding block away from the large bevel gear.

[0006] As the utility model is preferred, the pushing mechanism includes plane thread and thread groove, the plane thread is arranged on the side of the big bevel gear far from the small bevel gear, the thread groove is arranged on the side of the clamping sliding block close to the big bevel gear, the plane thread is contained in the thread groove, when the big bevel gear rotates, the plane thread is driven to rotate, thereby driving the clamping sliding block to slide radially.

[0007] As the utility model is preferred, it further includes a buffer device, the buffer device includes a sliding cavity, a limiting column, a sliding block, an elastic member and an upper clamping plate, the sliding cavity is arranged inside the clamping sliding block, the limiting column is fixedly connected to the center position of the sliding cavity, the elastic member is sleeved on the outside of the limiting column, the sliding block is slidably sleeved on the outside of the limiting column, one side of the sliding block is attached to the elastic member, a sliding groove is formed in the side of the clamping sliding block close to the lower clamping plate, the sliding block extends to the outside of the clamping sliding block through the sliding groove and is fixedly connected to the upper clamping plate.

[0008] As the utility model is preferred, a limiting protrusion is arranged in the middle of the small bevel gear, a limiting groove is formed in the corresponding position of the shell and the limiting protrusion, the limiting protrusion is contained in the limiting groove, and a rotating hole is formed in the top end of the small bevel gear.

[0009] As the utility model is preferred, sliding rails are formed in the two sides of the clamping sliding block, rail grooves are arranged in the corresponding positions of the shell and the sliding rails, and the sliding rails are contained in the rail grooves.

[0010] As the utility model is preferred, a rotating groove is formed in the outside of the big bevel gear, a rotating protrusion is arranged inside the shell, the rotating protrusion is contained in the rotating groove, and the rotating hole is hexagonally arranged.

[0011] Compared with the prior art, the utility model has the advantages as follows:

[0012] 1、 the utility model discloses a small bevel gear is rotated to drive the big bevel gear rotation, and the big bevel gear rotation drives the pushing mechanism to work, thereby driving the clamping sliding block to slide radially, according to the diameter difference of mine ventilation opening, the clamping sliding block is moved to the corresponding position, and the lower clamping plate arranged on the clamping sliding block can clamp or support the inner wall of the ventilation opening, so that different diameter pipes can be installed through the arrangement, and only the small bevel gear needs to be rotated to install and disassemble when in use, which greatly facilitates the use of users.

[0013] 2. In this utility model, when the large bevel gear rotates, the planar thread set above it rotates as well, thereby pushing the clamping slider with the threaded groove to slide radially. Through this setting, when the small bevel gear is rotated, each clamping slider will slide the same distance in its own direction, so as to achieve a self-centering effect. This makes it convenient to install on the inner wall of the ventilation opening during use and avoids affecting the installation effect due to uneven force.

[0014] 3. In this utility model, the upper and lower clamping plates move radially along with the clamping slider. When the upper clamping plate contacts the inner wall of the vent, it drives the sliding block to compress the elastic element. When the upper and lower clamping plates contact each other, the equipment reaches the maximum installation limit corresponding to the vent. At this time, the elastic element continuously pushes the upper clamping plate to fit against the inner wall of the vent. Through this setting, the upper clamping plate and the inner wall of the vent are in a state of continuous force, which can effectively prevent the equipment from falling off due to the loosening of the clamping plates and make the equipment installation more secure.

[0015] 4. The small bevel gear of this utility model is rotatably connected to the housing through a limiting protrusion. This setting can restrict the rotation of the small bevel gear and prevent the small bevel gear from rotating due to abnormal factors, which would affect the installation effect. The top of the small bevel gear is provided with a rotation hole to facilitate the rotation of the small bevel gear during installation, making the equipment installation more convenient.

[0016] 5. The sliding rail of this utility model is placed inside the track groove, thereby restricting the clamping slider to move only radially, preventing the clamping slider from falling off and affecting the installation effect. The large bevel gear is placed inside the housing through the rotating groove and rotating protrusion, which ensures the normal rotation of the large bevel gear while restricting its axial movement, ensuring that the large bevel gear and the small bevel gear are always in a good meshing state, and ensuring the normal operation of the equipment. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram provided by an embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the structure from another perspective provided by an embodiment of the present utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure provided in an embodiment of the present utility model;

[0020] Figure 4 This is a full sectional view of the front view provided in this embodiment of the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the buffer device provided in an embodiment of the present invention;

[0022] Figure 6 This is provided by the embodiment of the present utility model. Figure 4 A magnified view of a section at point A in the middle;

[0023] Figure 7 The utility model embodiment provides Figure 4 The partial close -up of B in the middle.

[0024] In the figure: 1, protective net; 2, shell; 3, big bevel gear; 4, small bevel gear; 5, clamping sliding block; 6, push mechanism; 7, lower clamping plate; 601, plane thread; 602 threaded groove; 8, buffer device; 801, sliding cavity; 802, limiting column; 803, sliding block; 804, elastic member; 805, upper clamping plate; 501, sliding groove; 401, limiting protrusion; 201, limiting groove; 402, rotating hole; 502, sliding rail; 202, rail groove; 301, rotating groove; 203, rotating protrusion. DETAILED DESCRIPTION

[0025] In order to further understand the utility model content, characteristics and efficacy of the utility model, the following examples are cited, and the detailed description is as follows in conjunction with the drawings.

[0026] The structure of the utility model will be described in detail below in conjunction with the drawings.

[0027] Referring to Figures 1 to 3 The utility model embodiment provides a coal mine underground ventilation opening protection structure, including protective net 1, still including shell 2, the protective net 1 is fixedly connected to one side of the shell 2, the shell 2 inside rotationally connected with big bevel gear 3, the big bevel gear 3 is engaged with small bevel gear 4, the small bevel gear 4 is rotationally connected on the shell 2, the shell 2 is slidably connected with a plurality of clamping sliding blocks 5 on the side away from the protective net 1, the clamping sliding block 5 is connected with the big bevel gear 3 through push mechanism 6, the clamping sliding block 5 is fixedly connected with lower clamping plate 7 on the side away from the big bevel gear 3.

[0028] When using, rotate small bevel gear 4, to drive big bevel gear 3 rotation, and big bevel gear 3 rotation will drive push mechanism 6 work, to drive the clamping sliding block 5 radial sliding, according to the diameter of mine ventilation opening, move clamping sliding block 5 to the corresponding position, lower clamping plate 7 on clamping sliding block 5 can be clamped or supported to the inner wall of ventilation opening, through the setting, different diameter pipes can be installed, and when using, only need to rotate small bevel gear 4 to install and disassemble, greatly facilitate the user to use.

[0029] Reference Figure 3 And Figure 6The pushing mechanism 6 comprises a flat thread 601 and a threaded groove 602, the flat thread 601 is arranged on the side of the bevel gear 3 away from the bevel pinion 4, the threaded groove 602 is arranged on the side of the clamping slider 5 close to the bevel gear 3, the flat thread 601 is accommodated in the threaded groove 602, when the bevel gear 3 rotates, it drives the flat thread 601 to rotate, thereby driving the clamping slider 5 to slide radially.

[0030] In use, when the bevel gear 3 rotates, the flat thread 601 arranged above it rotates to push the clamping slider 5 provided with the threaded groove 602 to slide radially. Through this arrangement, when the bevel pinion 4 rotates, each clamping slider 5 will slide in the respective direction by the same distance to achieve the self-centering effect, which facilitates installation in the inner wall of the air vent and avoids affecting the installation effect due to uneven stress.

[0031] Reference Figures 4 to 6 It also comprises a buffering device 8, the buffering device 8 comprises a sliding cavity 801, a limiting column 802, a sliding block 803, an elastic element 804 and an upper clamping plate 805, the sliding cavity is arranged inside the clamping slider 5, the limiting column 802 is fixedly connected to the center position of the sliding cavity 801, the elastic element 804 is sleeved outside the limiting column 802, the sliding block 803 is slidingly sleeved outside the limiting column 802, one side of the sliding block 803 is in contact with the elastic element 804, a sliding groove 501 is formed on the side of the clamping slider 5 close to the lower clamping plate 7, the sliding block 803 extends to the outside of the clamping slider 5 through the sliding groove 501 and is fixedly connected with the upper clamping plate 805.

[0032] In use, the upper clamping plate 805 and the lower clamping plate 7 move radially with the clamping slider 5, when the upper clamping plate 805 contacts the inner wall of the air vent, the upper clamping plate 805 drives the sliding block 803 to compress the elastic element 804, when the upper clamping plate 805 and the lower clamping plate 7 contact, the device reaches the maximum installation limit corresponding to the air vent, at this time the elastic element 804 continuously pushes the upper clamping plate 805 to be in contact with the inner wall of the air vent, through this arrangement, the upper clamping plate 805 and the inner wall of the air vent are in a state of continuous stress, which can effectively prevent the device from falling off due to loosening of the clamping plate, making the device installation more secure.

[0033] Reference Figure 7 The middle part of the bevel pinion 4 is provided with a limiting protrusion 401, the shell 2 is provided with a limiting groove 201 at the corresponding position of the limiting protrusion 401, the limiting protrusion 401 is accommodated in the limiting groove 201, and a rotating hole 402 is formed in the top end of the bevel pinion 4.

[0034] When in use, the small bevel gear 4 is rotatably connected to the shell 2 through the limiting protrusion 401, and the rotation of the small bevel gear 4 can be limited through the arrangement, so that the installation effect is not affected by the abnormal rotation of the small bevel gear 4, and the rotation hole 402 is arranged at the top end of the small bevel gear 4 to facilitate the rotation of the small bevel gear 4 during installation, and the equipment installation is more convenient.

[0035] With reference to Figure 1 and Figure 3 , the sliding rails 502 are arranged at the two sides of the clamping sliding block 5, the shell 2 is provided with the track groove 202 at the corresponding position of the sliding rails 502, and the sliding rails 502 are accommodated in the track groove 202.

[0036] When in use, the sliding rails 502 are arranged in the track groove 202, so that the clamping sliding block 5 can only move in the radial direction, and the installation effect is not affected by the falling of the clamping sliding block 5.

[0037] With reference to Figure 7 , the rotating groove 301 is arranged at the outer side of the large bevel gear 3, the rotating protrusion 203 is arranged in the shell 2, the rotating protrusion 203 is accommodated in the rotating groove 301, and the rotating hole 402 is hexagonal.

[0038] When in use, the large bevel gear 3 is arranged in the shell 2 through the rotating groove 301 and the rotating protrusion 203, the axial movement of the large bevel gear 3 is limited while the normal rotation of the large bevel gear 3 is ensured, the large bevel gear 3 and the small bevel gear 4 are always in a good meshing state, and the equipment works normally.

[0039] The working principle of the utility model is as follows:

[0040] The coal mine underground ventilation opening protection structure drives the large bevel gear 3 to rotate through the rotation of the small bevel gear 4, the large bevel gear 3 drives the pushing mechanism 6 to work, so that the clamping sliding block 5 slides in the radial direction, the clamping sliding block 5 is moved to the corresponding position according to the different diameters of the mine ventilation opening, the lower clamping plate 7 arranged on the clamping sliding block 5 can clamp or support the inner wall of the ventilation opening, different diameter pipes can be installed through the arrangement, and the installation and disassembly can be carried out only by rotating the small bevel gear 4 when in use, the user is greatly facilitated, the existing protection net installation steps are extremely complicated, the protection net cannot be disassembled at any time after installation, and the protection net cannot be applied to pipes with different diameters, and the problem that most of the protection nets cannot be reused after use is solved.

[0041] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0042] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A coal mine underground ventilation port protection structure, comprising a protection net (1), characterized in that: a shell (2) is further included, the protection net (1) is fixedly connected to one side of the shell (2), a large bevel gear (3) is rotatably connected inside the shell (2), the large bevel gear (3) is engaged with a small bevel gear (4), and the small bevel gear (4) is rotatably connected to the shell (2); a plurality of clamping sliding blocks (5) are slidably connected to the side of the shell (2) away from the protection net (1), the clamping sliding blocks (5) are connected with the large bevel gear (3) through a pushing mechanism (6); a lower clamping plate (7) is fixedly connected to the side of the clamping sliding block (5) away from the large bevel gear (3).

2. The coal mine underground ventilation port protection structure according to claim 1, characterized in that: the pushing mechanism (6) comprises a plane thread (601) and a threaded groove (602); the plane thread (601) is arranged on the side of the large bevel gear (3) away from the small bevel gear (4), the threaded groove (602) is arranged on the side of the clamping sliding block (5) close to the large bevel gear (3), and the plane thread (601) is accommodated in the threaded groove (602); when the large bevel gear (3) rotates, the plane thread (601) is driven to rotate, thereby driving the clamping sliding block (5) to slide radially.

3. The coal mine underground ventilation port protection structure according to claim 1, characterized in that: a buffer device (8) is further included, the buffer device (8) comprises a sliding cavity (801), a limiting column (802), a sliding block (803), an elastic member (804) and an upper clamping plate (805); the sliding cavity (801) is arranged inside the clamping sliding block (5), the limiting column (802) is fixedly connected to the center position of the sliding cavity (801), the elastic member (804) is sleeved outside the limiting column (802), the sliding block (803) is slidably sleeved outside the limiting column (802), and one side of the sliding block (803) is attached to the elastic member (804); a sliding groove (501) is formed in the side of the clamping sliding block (5) close to the lower clamping plate (7), the sliding block (803) extends to the outside of the clamping sliding block (5) through the sliding groove (501) and is fixedly connected with the upper clamping plate (805).

4. The coal mine underground ventilation port protection structure according to claim 2, characterized in that: a limiting protrusion (401) is arranged in the middle of the small bevel gear (4), a limiting groove (201) is formed in the corresponding position of the shell (2) and the limiting protrusion (401), the limiting protrusion (401) is accommodated in the limiting groove (201), and a rotating hole (402) is formed in the top end of the small bevel gear (4).

5. The coal mine underground ventilation port protection structure according to claim 4, characterized in that: ​ Two sides of the clamping slider (5) are provided with sliding rails (502), and the shell (2) is provided with a rail groove (202) at a position corresponding to the sliding rail (502), and the sliding rail (502) is accommodated in the rail groove (202).

6. The coal mine underground ventilation port protection structure of claim 4, characterized in that: The outer side of the bevel gear (3) is provided with a rotating groove (301), and the inner side of the shell (2) is provided with a rotating protrusion (203), the rotating protrusion (203) is accommodated in the rotating groove (301), and the rotating hole (402) is hexagonally arranged.

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