Dust falling device for coal mining working face

Abstract

The utility model relates to a dust falling device for a coal mining working face. The dust falling device comprises a first base, a second base, an atomization spraying pipe, a swing frame and a driving mechanism. The first base and the second base are used for being arranged on the two sides of a traction part of the coal mining machine, the swing frame is used for being arranged above the traction part and surrounding the traction part, the first end of the swing frame is rotatably connected to the first base, and the second end of the swing frame is rotatably connected to the second base. The atomization spraying pipe is installed on the swing frame, and an atomization nozzle is arranged on the side, facing the traction part, of the atomization spraying pipe. The driving mechanism is installed on the first base and used for driving the swing frame to swing in a reciprocating mode. The reciprocating swing of the swing frame covers the space of the coal mining machine in the horizontal direction and the space of the coal mining machine in the vertical direction at the same time, on one hand, the dust falling effect can be improved, and on the other hand, the occupied moving space is smaller under the condition that the space and the area covered in the mining working face are the same in a swing mode.

Description

Technical Field

[0001] The present disclosure relates to the technical field of coal mining, and in particular to a dust suppression device for a coal mining working face. Background Art

[0002] During the coal mining process, a large amount of coal dust and rock dust will be generated. Excessive dust concentration in the tunnel is not only prone to cause accidents, such as explosions, but also endangers the health of workers.

[0003] In the related art, the dust prevention and reduction measures at the coal mine working face usually involve spraying water mist to form a water curtain to reduce dust. In order to expand the coverage of the water curtain, the position of the nozzle can also be moved as needed. For example, a coal mine excavation working face wind flow atomization equipment is disclosed in the patent document with the authorization announcement number CN214464342U. The equipment uses a first hydraulic telescopic rod to enable the spray head to move in the horizontal direction, and a second hydraulic telescopic rod to enable the spray head to move in the vertical direction. However, due to the small space of the coal mine working face, and the large space required for the movement of the spray head of the above-mentioned coal mine excavation working face wind flow atomization equipment, it is not conducive to underground operations. Utility Model Content

[0004] The purpose of the present invention is to provide a dust suppression device for a coal mine excavation working face to solve the above technical problems.

[0005] In order to achieve the above-mentioned object, the present disclosure provides a dust suppression device for a coal mining working face, comprising a first base, a second base, an atomizing spray pipe, a swing frame and a driving mechanism;

[0006] The first base and the second base are used to be arranged on both sides of the traction part of the coal mining machine;

[0007] The swing frame is used to be arranged above the traction part and surround the traction part, the first end of the swing frame is rotatably connected to the first base, and the second end of the swing frame is rotatably connected to the second base;

[0008] The atomizing spray pipe is installed on the swing frame, and an atomizing nozzle is arranged on the side of the atomizing spray pipe facing the traction part;

[0009] The driving mechanism is installed on the first base and is used to drive the swing frame to swing back and forth.

[0010] Optionally, the driving mechanism includes a motor and a non-circular rotating part with a non-circular cross-section, and the dust reduction device also includes an elastic reset part. The motor is installed on the first base and connected to the non-circular rotating part. The motor is used to drive the non-circular rotating part to rotate so that the non-circular rotating part can push the swing frame to rotate, and the elastic reset part is used to apply an elastic force to the swing frame to make it rotate toward the non-circular rotating part.

[0011] Optionally, there are two swing frames, each of which is correspondingly provided with the elastic reset part, each of which is provided with the atomizing spray pipe, and the non-circular rotating part is located between the two swing frames, and the non-circular rotating part can push the two swing frames to rotate respectively during the rotation process.

[0012] Optionally, each of the swing frames includes an arc segment, a first straight segment and a second straight segment respectively connected to both ends of the arc segment, the first straight segments of the two swing frames form a V shape and are both rotatably connected to the first base, the non-circular rotating part is located between the first straight segments of the two swing frames, the second straight segments of the two swing frames form a V shape and are both rotatably connected to the second base, and the atomizing spray pipe is arranged on the arc segment.

[0013] Optionally, the first base includes a base and a mounting plate arranged on the base, the motor is mounted on the base, the output shaft of the motor passes through the mounting plate and is connected to the non-circular rotating member, and the first end of the swing frame is located below the non-circular rotating member and is rotatably mounted on the mounting plate.

[0014] Optionally, the non-circular rotating member is a cam.

[0015] Optionally, the elastic return member includes a first spring and a second spring, one end of the first spring is connected to the swing frame, the other end of the first spring is connected to the first base, one end of the second spring is connected to the swing frame, and the other end of the second spring is connected to the second base.

[0016] Optionally, the dust reduction device also includes a leveling mechanism, which includes a lifting structure and a connecting structure, the lifting structure is installed on the second base, the connecting structure is installed at one end of the lifting structure away from the second base, the lifting structure is used to drive the connecting structure to move up and down, and the second end of the swing frame is rotatably connected to the connecting structure.

[0017] Optionally, the lifting structure is an electric telescopic rod.

[0018] Optionally, the dust reduction device also includes a water tank, a water pump and a water supply hose. The water pump is arranged in the water tank, the water outlet of the water pump is connected to the water inlet of the water supply hose, the water outlet of the water supply hose is connected to the atomizing spray pipe, and the water pump is used to pump the water in the water tank to the atomizing spray pipe via the water supply hose.

[0019] Through the above technical scheme, since the reciprocating swing of the swing frame covers the space in the horizontal direction and the vertical direction of the coal mining machine at the same time, compared with the technical scheme in the related technology that makes the spray head move in the horizontal direction and the vertical direction respectively, the method of making the atomizing spray pipe swing back and forth covers the same space and area within the mining working face, and occupies a smaller activity space, which is conducive to more convenient movement of the dust reduction device and dust reduction operations.

[0020] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0022] Figure 1 It is a stereoscopic diagram of a dust suppression device for a coal mining working face provided by an embodiment of the present disclosure;

[0023] Figure 2 yes Figure 1 A magnified view of part A;

[0024] Figure 3 is a stereoscopic diagram of a dust suppression device for a coal mining working face provided by an embodiment of the present disclosure (with Figure 1 different perspectives);

[0025] Figure 4 is a stereoscopic diagram of a dust suppression device for a coal mining working face provided by an embodiment of the present disclosure (with Figure 1 and Figure 3 different perspectives).

[0026] Description of Reference Numerals

[0027] 100-dust suppression device; 1-first base; 11-base; 12-mounting plate; 2-second base; 3-atomizing spray pipe; 4-swing frame; 41-first straight segment; 42-second straight segment; 43-arc segment; 5-driving mechanism; 51-motor; 52-non-circular rotating part; 53-elastic reset part; 531-first spring; 532-second spring; 6-leveling mechanism; 61-lifting structure; 62-connecting structure; 7-water tank; 8-water supply hose. DETAILED DESCRIPTION

[0028] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0029] In the present disclosure, unless otherwise stated, the directional words used, such as "upper" and "lower", are generally defined based on the normal working state of the dust suppression device. This is only for the convenience of describing the present disclosure and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, specific orientation structure and operation, and therefore cannot be understood as a limitation of the present disclosure. "Inside" and "outside" refer to the inside and outside of the contour of the corresponding component. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present disclosure, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "connected", and "installed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to specific circumstances.

[0031] A coal mining machine usually includes a traction part and a cutting part. The cutting parts are respectively provided at both ends of the traction part. The cutting part is used to cut the coal seam, and the traction part is used to pull the cutting part to move back and forth, so as to collect coal from the coal mining face. During the coal mining process, the cutting parts at both ends of the traction part will generate a large amount of coal dust, thereby obstructing the working vision underground.

[0032] In view of this, if Figures 1 to 4 As shown, the present disclosure provides a dust suppression device 100 for a coal mine excavation working face, comprising a first base 1, a second base 2, an atomizing spray pipe 3, a swing frame 4 and a driving mechanism 5.

[0033] The first base 1 and the second base 2 are used to be arranged on both sides of the traction part of the coal mining machine, the swing frame 4 is used to be arranged above the traction part and around the traction part, the first end of the swing frame 4 is rotatably connected to the first base 1, and the second end of the swing frame 4 is rotatably connected to the second base 2. The atomizing spray pipe 3 is installed on the swing frame 4, and the atomizing spray head is arranged on the side of the atomizing spray pipe 3 facing the traction part. The driving mechanism 5 is installed on the first base 1 and is used to drive the swing frame 4 to swing back and forth.

[0034] During the operation of the above-mentioned dust reduction device 100, the swing frame 4 can swing back and forth around the traction part of the coal mining machine under the drive of the driving mechanism 5. The water mist formed by the atomizing nozzle located on one side of the traction part as the swing frame 4 swings can cover the space within the swing range, thereby reducing the concentration of coal dust in the space.

[0035] Through the above technical scheme, since the reciprocating swing of the swing frame 4 covers the space in the horizontal direction and the space in the vertical direction of the coal mining machine at the same time, compared with the technical scheme in the related technology that makes the spray head move in the horizontal direction and the vertical direction respectively, the method of making the atomizing spray pipe 3 swing back and forth covers the same space and area in the mining working face, and occupies a smaller activity space, which is conducive to more convenient movement of the dust reduction device 100 and dust reduction operations.

[0036] The present disclosure does not limit the specific structure of the driving mechanism 5. Figure 1 and Figure 2 As shown, in one embodiment provided by the present disclosure, the driving mechanism 5 includes a motor 51 and a non-circular rotating member 52 with a non-circular cross section, and the dust suppression device 100 also includes an elastic reset member 53. The motor 51 is installed on the first base 1 and connected to the non-circular rotating member 52. The motor 51 is used to drive the non-circular rotating member 52 to rotate, so that the non-circular rotating member 52 can push the swing frame 4 to rotate, and the elastic reset member 53 is used to apply an elastic force to the swing frame 4 to make it rotate toward the non-circular rotating member 52. Since the cross section of the non-circular rotating member 52 is non-circular and the outer contour is also non-circular, when the non-circular rotating member 52 rotates driven by the motor 51, the distance between the swing frame 4 and the rotation center of the non-circular rotating member 52 is also constantly changing, thereby pushing the swing frame 4 to reciprocate around the connection point with the first base 1. In this way, the structure of the non-circular rotating member 52 itself is used to push the swing frame 4 to reciprocate, the structure is simple, and the cost of processing and manufacturing is reduced.

[0037] Optionally, as another embodiment of the present disclosure, the pushing part includes a cylinder and a piston rod, one end of the piston rod is inserted into the cylinder, and the other end of the piston rod is hinged to the swing frame 4, which is used to push the swing frame 4 to move in a direction close to the elastic reset member 53. The cylinder and the piston rod are used as the pushing part to push the swing frame 4 to move, and the device structure is mature, the operation is stable, and it is not easy to fail.

[0038] To increase coverage, such as Figure 1 and Figure 3 As shown, there are two swing frames 4, each swing frame 4 is correspondingly provided with an elastic reset member 53, each swing frame 4 is provided with an atomizing spray pipe 3, and the non-circular rotating member 52 is located between the two swing frames 4. The non-circular rotating member 52 can respectively push the two swing frames 4 to rotate during the rotation process. Since the two swing frames 4 are respectively located on both sides of the non-circular rotating member 52, each swing frame 4 is correspondingly provided with an elastic reset member 53. As the non-circular rotating member 52 rotates, the non-circular rotating member 52 pushes one of the two swing frames 4 on both sides thereof to move outward, and the other swing frame 4 moves toward the direction close to the non-circular rotating member 52 under the drive of the elastic member, and the above process is repeated continuously. In this way, the two swing frames 4 can be driven to swing back and forth by a non-circular rotating member 52 in cooperation with two elastic reset members 53. The spraying area is increased and the dust reduction effect is improved.

[0039] Alternatively, if Figure 3 As shown, each swing frame 4 includes an arc segment 43, a first straight segment 41 and a second straight segment 42 respectively connected to both ends of the arc segment 43, the first straight segments 41 of the two swing frames 4 form a V shape and are both rotatably connected to the first base 1, the non-circular rotating member 52 is located between the first straight segments 41 of the two swing frames 4, the second straight segments 42 of the two swing frames 4 form a V shape and are both rotatably connected to the second base 2, and the atomizing spray pipe 3 is arranged on the arc segment 43. The first straight segment 41, the second straight segment 42 and the arc segment 43 can be arranged to enclose the traction part of the coal mining machine, and the first straight segment 41 can drive the arc segment 43 to swing through the drive of the non-circular rotating member 52, so that the water mist sprayed by the atomizing spray pipe 3 arranged on the arc segment 43 can cover a larger area.

[0040] Furthermore, the first straight line segments 41 of the two swing frames 4 form a V-shape, and the non-circular rotating member 52 can be disposed in the V-shaped recess, so that the two swing frames 4 can be disposed close to the non-circular rotating member 52, so that when the non-circular rotating member 52 rotates driven by the motor 51, the two swing frames 4 can be driven to rotate separately.

[0041] Alternatively, if Figure 3 and Figure 4As shown, the first base 1 includes a base 11 and a mounting plate 12 disposed on the base 11, a motor 51 is mounted on the base 11, an output shaft of the motor 51 passes through the mounting plate 12 and is connected to the non-circular rotating member 52, and a first end of the swing frame 4 is located below the non-circular rotating member 52 and is rotatably mounted on the mounting plate 12. The output shaft of the motor 51 and the first end of the swing frame 4 are both disposed on the mounting plate 12, so that the swing frame 4 and the non-circular rotating member 52 can be located in the same rotation plane, and further, the rotation of the non-circular rotating member 52 can drive the swing frame 4 to rotate.

[0042] Alternatively, if Figure 2 As shown, the non-circular rotating member 52 can be a cam. When the cam rotates driven by the motor 51, due to the shape of the cam, the distance between the rotation center and the contact point between the cam and the swing frame 4 changes continuously. When the swing frame 4 contacts the cam profile with a changing radial vector, the swing frame 4 is in a state away from the cam; as the cam rotates, under the elastic force of the elastic reset member 53, the swing frame 4 contacts the arc segment profile with the cam rotation center as the center of the circle, and the swing frame 4 is in a state close to the cam. In this way, through the cooperation with the elastic reset member 53, the cam can achieve the effect of pushing the swing frame 4 to swing back and forth around the connection point with the first base 1 by using its own shape, which simplifies the driving structure and reduces the difficulty of processing.

[0043] Here, it should be noted that the present disclosure does not limit the specific structure of the non-circular rotating member 52. For example, the non-circular rotating member 52 may also be a rotating wheel with a triangular cross section or a rotating wheel with an elliptical cross section.

[0044] Alternatively, if Figure 3 As shown, the elastic return member 53 includes a first spring 531 and a second spring 532, one end of the first spring 531 is connected to the swing frame 4, the other end of the first spring 531 is connected to the first base 1, one end of the second spring 532 is connected to the swing frame 4, and the other end of the second spring 532 is connected to the second base 2. Since the first end of the swing frame 4 is rotatably connected to the first base 1, and the second end of the swing frame 4 is rotatably connected to the second base 2, the two ends of the first spring 531 are respectively connected to the first base 1 and a position close to the first end of the swing frame 4, and the two ends of the second spring 532 are respectively connected to the second base 2 and a position close to the second end of the swing frame 4, elastic force can be provided at both ends of the swing frame 4 to make the swing frame 4 rotate toward the non-circular rotating member 52, so that the force on the swing frame 4 is more uniform and the swing is smoother.

[0045] In the embodiment where there are two swing frames 4, each swing frame 4 is correspondingly provided with an elastic return member 53, that is, two first springs 531 are respectively arranged between the first ends of the two swing frames 4 and the first base 1, the non-circular rotating member 52 is located between the first ends of the two swing frames 4, and the two second springs 532 are respectively arranged between the second ends of the two swing frames 4 and the second base 2, so that in the embodiment where there are two swing frames 4, elastic force is provided to the swing frames 4 by the two first springs 531 and the two second springs 532 respectively.

[0046] Since the ground of the coal mining working face is usually uneven, in order to make the two ends of the arc section 43 of the swing frame 4 be located in the same horizontal plane, optionally, as Figure 1 , Figure 3 and Figure 4 As shown, the dust reduction device 100 also includes a leveling mechanism 6, which includes a lifting structure 61 and a connecting structure 62. The lifting structure 61 is installed on the second base 2, and the connecting structure 62 is installed at one end of the lifting structure 61 away from the second base 2. The lifting structure 61 is used to drive the connecting structure 62 to move up and down, and the second end of the swing frame 4 is rotatably connected to the connecting structure 62.

[0047] When one of the first base 1 or the second base 2 is at a different height due to uneven ground, the swing frame 4 connected to one end of the higher base has a tendency to tilt toward the other base. The leveling mechanism 6 can drive the connecting structure 62 to move up and down through the lifting structure 61, thereby driving the second end of the swing frame 4 connected to the connecting structure 62 to move up and down, so that the two ends of the arc section 43 of the swing frame 4 can be located in the same horizontal plane, preventing the swing frame 4 from being deformed due to uneven force, and making the swing of the swing frame 4 smoother.

[0048] The present disclosure does not limit the specific structure of the lifting structure 61. In one embodiment provided in the present disclosure, the lifting structure 61 is an electric telescopic rod, which can drive the connecting structure 62 to move up and down, and the electric telescopic rod has a wide range of adaptability and can drive the connecting structure 62 to any suitable height, and can adapt to the complex ground conditions at the coal mining site.

[0049] Here, it should be noted that the lifting structure 61 can also be one of a hydraulic telescopic rod and a pneumatic telescopic rod, and the present disclosure does not limit this.

[0050] Optionally, the connecting structure 62 may include a first connecting plate and a second connecting plate. The first connecting plate may be arranged in a horizontal direction and installed on an end of the lifting structure 61 away from the second base 2. The second connecting plate may be arranged in a vertical direction on the first connecting plate. The second end of the swing frame 4 may be rotatably installed on the second connecting plate.

[0051] Alternatively, if Figure 1 , Figure 3 and Figure 4 As shown, the dust suppression device 100 also includes a water tank 7, a water pump and a water supply hose 8. The water pump is arranged in the water tank 7. The water outlet of the water pump is connected to the water inlet of the water supply hose 8. The water outlet of the water supply hose 8 is connected to the atomizing spray pipe 3. The water pump is used to pump the water in the water tank 7 to the atomizing spray pipe 3 via the water supply hose 8. The water outlet of the water pump is connected to the atomizing spray pipe 3 by the water supply hose 8. When the swing frame 4 swings, the water supply hose 8 can move or deform with the swing frame 4, so that the swing of the swing frame 4 will not affect the normal water supply of the water pump, and the normal spraying operation of the atomizing spray pipe 3 is ensured.

[0052] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0053] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0054] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A dust suppression device for coal mining working face, characterized in that: It includes a first base, a second base, an atomizing spray pipe, a swing frame and a driving mechanism; The first base and the second base are used to be arranged on both sides of the traction part of the coal mining machine; The swing frame is used to be arranged above the traction part and surround the traction part, the first end of the swing frame is rotatably connected to the first base, and the second end of the swing frame is rotatably connected to the second base; The atomizing spray pipe is installed on the swing frame, and an atomizing nozzle is arranged on the side of the atomizing spray pipe facing the traction part; The driving mechanism is installed on the first base and is used to drive the swing frame to swing back and forth.

2. The dust suppression device according to claim 1, characterized in that: The driving mechanism includes a motor and a non-circular rotating part with a non-circular cross-section. The dust reduction device also includes an elastic reset part. The motor is installed on the first base and connected to the non-circular rotating part. The motor is used to drive the non-circular rotating part to rotate so that the non-circular rotating part can push the swing frame to rotate. The elastic reset part is used to apply an elastic force to the swing frame to make it rotate toward the non-circular rotating part.

3. The dust suppression device according to claim 2, characterized in that: There are two swing frames, each of which is provided with the elastic reset part, each of which is provided with the atomizing spray pipe, and the non-circular rotating part is located between the two swing frames. The non-circular rotating part can push the two swing frames to rotate respectively during the rotation process.

4. The dust suppression device according to claim 3, characterized in that: Each of the swing frames includes an arc segment, a first straight segment and a second straight segment respectively connected to the two ends of the arc segment, the first straight segments of the two swing frames form a V shape and are both rotatably connected to the first base, the non-circular rotating part is located between the first straight segments of the two swing frames, the second straight segments of the two swing frames form a V shape and are both rotatably connected to the second base, and the atomizing spray pipe is arranged on the arc segment.

5. The dust suppression device according to claim 2, characterized in that: The first base includes a base and a mounting plate arranged on the base, the motor is mounted on the base, the output shaft of the motor passes through the mounting plate and is connected to the non-circular rotating member, and the first end of the swing frame is located below the non-circular rotating member and is rotatably mounted on the mounting plate.

6. The dust suppression device according to any one of claims 2 to 5, characterized in that: The non-circular rotating part is a cam.

7. The dust suppression device according to any one of claims 2 to 5, characterized in that: The elastic return member includes a first spring and a second spring, one end of the first spring is connected to the swing frame, the other end of the first spring is connected to the first base, one end of the second spring is connected to the swing frame, and the other end of the second spring is connected to the second base.

8. The dust suppression device according to any one of claims 1 to 5, characterized in that: The dust reduction device also includes a leveling mechanism, which includes a lifting structure and a connecting structure. The lifting structure is installed on the second base, and the connecting structure is installed at an end of the lifting structure away from the second base. The lifting structure is used to drive the connecting structure to move up and down, and the second end of the swing frame is rotatably connected to the connecting structure.

9. The dust suppression device according to claim 8, characterized in that: The lifting structure is an electric telescopic rod.

10. The dust suppression device according to any one of claims 1 to 5, characterized in that: The dust reduction device also includes a water tank, a water pump and a water supply hose. The water pump is arranged in the water tank, the water outlet of the water pump is connected to the water inlet of the water supply hose, the water outlet of the water supply hose is connected to the atomizing spray pipe, and the water pump is used to pump the water in the water tank to the atomizing spray pipe via the water supply hose.

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