Air supply device for coal mine underground tunneling

Abstract

The utility model discloses an air supply device for coal mine underground tunneling, which relates to the technical field of underground air supply and comprises an air duct, a motor is mounted in the air duct, the output end of the motor is connected with a hub, blades are distributed on the outer side of the hub at equal intervals, one sides, close to each other, of the blades are respectively connected with an inserting rod, and the inserting rods are connected with the air duct. Containing grooves are formed in the hub at equal intervals. By arranging the inserting rods and the limiting blocks, in the using process, the blades and the hub can be disassembled and assembled through mutual matching of the inserting rods and the limiting blocks, so that when a single blade is damaged, a plurality of blades do not need to be replaced together with the hub, waste of resources can be effectively reduced, and the service life of the blades is prolonged. And a connecting ring and a clamping rod are arranged, when the two sets of limiting blocks are clamped in the inserting rod, through the arrangement of the clamping rod, limiting of the rotating shaft can be achieved, and the situation that the rotating shaft is subjected to centrifugal force or impact force of the rotating shaft and foreign objects, and displacement is generated is effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of underground air supply, in particular to an air supply device for underground coal mine excavation. Background Art

[0002] A coal mine is a reasonable space dug by humans when they excavate geological strata rich in coal. It usually includes tunnels, shafts, and mining faces, etc. Since there is a large amount of gas in the coal mine, an air supply device is required to discharge the gas during underground excavation work in the coal mine to ensure the safety of the workers underground in the coal mine. The common coal mine air supply device is an axial flow fan, which is widely used due to its compact structure, small size, and light weight.

[0003] The working principle of the mining axial flow fan is to drive the blades to rotate through the motor, thereby generating axial flow of air to supply air during underground excavation in coal mines. However, due to the complex excavation environment, the blades of the axial flow fan are easily damaged after a period of use. Since the blades and the hub of the existing axial flow fans are mostly connected by welding, when a single blade is damaged, the hub and multiple blades need to be disassembled and replaced at the same time, which will cause a waste of resources. For this reason, we propose an air supply device for underground excavation in coal mines to solve the above problems. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes an air supply device for underground excavation in a coal mine.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A wind supply device for underground excavation in a coal mine comprises a wind tube, a motor is installed inside the wind tube, and a wheel hub is connected to the output end of the motor, blades are evenly distributed on the outer side of the wheel hub, and the sides of the blades close to each other are respectively connected to insertion rods, and the inside of the wheel hub is evenly spaced with receiving grooves, and the inside of the receiving groove is connected to a gear through a bearing, the two sides of the gear are symmetrically meshed with tooth plates, and the side edges of the tooth plates are connected to connecting plates, the outer side of the connecting plate is connected to the inner wall of the receiving groove through a spring, the front end of the gear is connected to a rotating shaft, and the sides of the connecting plates close to each other are respectively connected to limit blocks, the inside of the wheel hub is provided with a docking groove matched with the insertion rod, and the inside of the insertion rod is provided with a clamping groove matched with the limit block.

[0007] Preferably, a slot hole is provided inside the connecting plate, and a connecting rod is inserted inside the slot hole, and both ends of the connecting rod are connected to the inner wall of the accommodating groove.

[0008] Preferably, one end of the limit block close to the blade is arranged in an inclined shape, and the outer wall of the limit block is connected to a rubber plate.

[0009] Preferably, the rotating shaft extends to the outside of the hub and is connected to a rotating disk, and rotating plates are evenly distributed on the outer surface of the rotating disk.

[0010] Preferably, a connecting ring is connected to the side of the hub, and a clamping rod is inserted into the position of the connecting ring corresponding to the rotating shaft, and a limiting disk is connected to the side of the clamping rod close to each other.

[0011] Preferably, a connecting block is connected to the outer side of the limiting plate, and the connecting block is configured as a long strip structure.

[0012] Preferably, rubber rings are evenly distributed on the outer surface of the locking rod, a limiting groove matched with the locking rod is provided inside the rotating shaft, and the inner wall of the limiting groove abuts against the outer surface of the rubber ring.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The device is provided with an insertion rod and a limit block. During use, the blades and the hub can be disassembled and assembled through the cooperation of the insertion rod and the limit block. Therefore, when a single blade is damaged, there is no need to replace multiple blades together with the hub, which can effectively reduce the waste of resources.

[0015] 2. The device is provided with a connecting ring and a locking rod. When the two sets of limit blocks are locked inside the insertion rod, the locking rod can be used to limit the rotating shaft, so as to effectively prevent the rotating shaft from being displaced by centrifugal force or impact force with foreign objects, thereby effectively ensuring the limiting effect of the insertion rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of an air supply device for underground coal mine excavation proposed by the utility model;

[0017] Figure 2 for Figure 1 The three-dimensional intention of the motor and blade structure;

[0018] Figure 3 for Figure 1 A three-dimensional cross-sectional schematic diagram of the insertion rod and the receiving groove structure;

[0019] Figure 4 for Figure 1 Schematic diagram of the three-dimensional cross-section of the hub and gear structure.

[0020] In the figure: 1, wind tube; 2, motor; 3, wheel hub; 4, blades; 5, insertion rod; 6, receiving groove; 7, gear; 8, tooth plate; 9, connecting plate; 10, spring; 11, limit block; 12, rotating shaft; 13, turntable; 14, connecting rod; 15, connecting ring; 16, locking rod; 17, limit plate. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-4 A wind supply device for underground excavation in a coal mine comprises a wind tube 1, a motor 2 is installed inside the wind tube 1, and a hub 3 is connected to the output end of the motor 2, blades 4 are equidistantly distributed on the outside of the hub 3, and the sides of the blades 4 close to each other are respectively connected to insertion rods 5, and the inside of the hub 3 is equidistantly provided with receiving grooves 6, and the inside of the receiving groove 6 is connected with a gear 7 through a bearing, and tooth plates 8 are symmetrically meshed on both sides of the gear 7, and the side of the tooth plate 8 is connected to a connecting plate 9, and the outer side of the connecting plate 9 is connected to the inner wall of the receiving groove 6 through a spring 10, the front end of the gear 7 is connected to a rotating shaft 12, and the sides of the connecting plates 9 close to each other are respectively connected to limit blocks 11, a docking groove matched with the insertion rod 5 is opened inside the hub 3, and a card slot matched with the limit block 11 is opened inside the insertion rod 5.

[0023] Further, see Figure 3 It can be known that slots are provided inside the connecting plate 9, and connecting rods 14 are inserted into the slots. Both ends of the connecting rods 14 are connected to the inner wall of the accommodating groove 6. Through the mutual cooperation between the slots and the connecting rods 14, the guiding work of the connecting plate 9 during the movement can be realized, thereby effectively ensuring the stability of the connecting plate 9 during the movement.

[0024] Further, see Figure 3 It can be known that the end of the limit block 11 close to the blade 4 is set in an inclined shape, and the outer wall of the limit block 11 is connected to a rubber plate. When in use, since the limit block 11 is set as an inclined structure, when the insertion rod 5 is inserted into the docking groove inside the hub 3, the two groups of limit blocks 11 set with the inclined structure can be pushed to be forcefully accommodated in the accommodating groove 6. Therefore, in the process of inserting the insertion rod 5, there is no need for the staff to rotate the turntable 13. In combination with the rubber plate glued with the inclined surface, it can effectively prevent the end of the insertion rod 5 and the limit block 11 from directly affecting the contact, thereby achieving protection for both.

[0025] Further, see Figure 4It can be known that the rotating shaft 12 extends to the outside of the hub 3 and is connected to a turntable 13, and the outer surface of the turntable 13 is evenly distributed with rotating plates. Through the connection between the turntable 13 and multiple groups of rotating plates, the rotating shaft 12 can be easily rotated by the staff.

[0026] Further, see Figure 4 It can be known that a connecting ring 15 is connected to the side of the hub 3, and a locking rod 16 is inserted into the position inside the connecting ring 15 corresponding to the rotating shaft 12, and the side of the locking rod 16 close to each other is connected to a limiting disk 17, and the side of the locking rod 16 away from each other extends inside the rotating shaft 12. When in use, the rotating shaft 12 can be limited by the mutual cooperation of the locking rod 16 and the limiting disk 17 to prevent the rotating shaft 12 from being easily rotated under force, thereby effectively ensuring the locking effect of the inserted rod 5.

[0027] Further, see Figure 4 It can be seen that a connecting block is connected to the outer side of the limit plate 17, and the connecting block is arranged as a long strip structure. The limit plate 17 arranged through the long strip structure can facilitate the staff to pull the limit plate 17 to move, thereby effectively improving the convenience of the device during use.

[0028] Further, see Figure 4 It can be seen that rubber rings are evenly distributed on the outer surface of the locking rod 16, and a limiting groove adapted to the locking rod 16 is opened inside the rotating shaft 12, and the inner wall of the limiting groove is in contact with the outer surface of the rubber ring. The rubber ring is not shown in the figure. The rubber ring that fits tightly with the inner wall of the limiting groove can ensure the limiting effect of the locking rod 16 on the rotating shaft 12.

[0029] Working principle: When the utility model is used, the staff can first install the air cylinder 1 in a suitable area of ​​the excavation working face. After the installation is completed, the motor 2 is started to drive the hub 3 and the blades 4 to rotate continuously, so as to realize the air supply operation to the well. When some blades 4 are damaged after a period of use, the staff can first stop the motor 2, so that the blades 4 and the hub 3 will no longer rotate;

[0030] Then the staff can pull the limit plate 17 corresponding to the position of the damaged blade 4, so that it drives the locking rod 16 to be pulled out from the inside of the rotating shaft 12. At this time, the staff can rotate the contact-bound turntable 13 to drive the rotating shaft 12 to rotate at the same time. Since the rotating shaft 12 is connected to the gear 7, the gear 7 can also rotate together. Since the outer side of the gear 7 is symmetrically meshed with two sets of tooth plates 8, when the gear 7 rotates, the two sets of tooth plates 8 can drive the two sets of connecting plates 9 away from each other. At this time, the limit block 11 connected to the side of the connecting plate 9 can be pulled out from the card slot opened inside the insertion rod 5, and then the staff can pull the insertion rod 5 out of the docking groove inside the hub 3, and insert the new insertion rod 5 into the docking groove inside the hub 3, and through the setting of the two sets of limit blocks 11, the insertion rod 5 can be quickly limited and fixed. The above is the entire working principle of the utility model.

[0031] In the present invention, the installation method, connection method or setting method of all the components mentioned above are common mechanical methods, and the specific structures, models and coefficient indicators of all its components are its own technology. As long as it can achieve its beneficial effects, it can be implemented, so it will not be elaborated.

[0032] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

[0033] In the present utility model, unless otherwise stated, the directional words contained in the terms such as "up, down, left, right, front, back, inside, outside, vertical, horizontal" only represent the orientation of the term in normal use, or are common names understood by those skilled in the art, and should not be regarded as limitations on the term. At the same time, number series nouns such as "first", "second" and "third" do not represent specific quantities and orders, but are merely used to distinguish names. Moreover, the terms "include", "comprise" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article or device.

Claims

1. An air supply device for underground coal mine excavation, comprising an air duct (1), characterized in that: The wind tube (1) is provided with a motor (2) inside, and the output end of the motor (2) is connected to a wheel hub (3), blades (4) are evenly distributed on the outside of the wheel hub (3), and the sides of the blades (4) close to each other are respectively connected to insertion rods (5), the inside of the wheel hub (3) is provided with accommodating grooves (6) at equal intervals, and the inside of the accommodating groove (6) is connected to a gear (7) through a bearing, the two sides of the gear (7) are symmetrically meshed with tooth plates (8), and the side of the tooth plate (8) is connected to a connecting plate (9), the outside of the connecting plate (9) is connected to the inner wall of the accommodating groove (6) through a spring (10), the front end of the gear (7) is connected to a rotating shaft (12), and the sides of the connecting plate (9) close to each other are respectively connected to limit blocks (11), the inside of the wheel hub (3) is provided with a docking groove matched with the insertion rod (5), and the inside of the insertion rod (5) is provided with a clamping groove matched with the limit block (11).

2. The air supply device for underground coal mine excavation according to claim 1, characterized in that: The connection plate (9) is provided with a slot hole inside, and a connecting rod (14) is inserted into the slot hole. Both ends of the connecting rod (14) are connected to the inner wall of the accommodating groove (6).

3. The air supply device for underground coal mine excavation according to claim 1, characterized in that: One end of the limit block (11) close to the blade (4) is arranged in an inclined shape, and the outer wall of the limit block (11) is connected to a rubber plate.

4. The air supply device for underground coal mine excavation according to claim 1, characterized in that: The rotating shaft (12) extends to the outside of the wheel hub (3) and is connected to a rotating disk (13), and rotating plates are evenly distributed on the outer surface of the rotating disk (13).

5. The air supply device for underground coal mine excavation according to claim 1, characterized in that: A connecting ring (15) is connected to the side of the wheel hub (3), and a clamping rod (16) is inserted into the connecting ring (15) at a position corresponding to the rotating shaft (12), and a limiting plate (17) is connected to the side of the clamping rod (16) that is close to each other.

6. The air supply device for underground coal mine excavation according to claim 5, characterized in that: The outer side of the limiting plate (17) is connected with a connecting block, and the connecting block is arranged as a long strip structure.

7. The air supply device for underground coal mine excavation according to claim 5, characterized in that: The outer surface of the locking rod (16) is evenly distributed with rubber rings, and the interior of the rotating shaft (12) is provided with a limiting groove matched with the locking rod (16), and the inner wall of the limiting groove abuts against the outer surface of the rubber ring.

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