A ring-shaped drum tracking spray dust suppression device for coal mining machine

Abstract

The present invention belongs to the technical field of coal mine dust control. It relates to a coal mining machine annular drum tracking spray dust reduction device, including an annular sprayer, an adjustable telescopic bracket, a pulley, a pulley mounting seat, a pull rope, and a support seat; the annular sprayer is arranged at one end of the adjustable telescopic bracket and is located on the outside of the coal machine drum; the other end of the adjustable telescopic bracket is rotatably connected to the support seat; the pulley is arranged on the outer shell of the coal machine drum motor, and the adjustable telescopic bracket is hoisted on the pulley through a pull rope; when the coal machine drum swings up and down, the pulley cooperates with the pull rope to drive the adjustable telescopic bracket to swing, so that the position of the annular sprayer changes dynamically with the coal machine drum. The present invention utilizes the flexibility of the pull rope and the motion relationship between the two swinging mechanisms to cleverly realize the dynamic tracking of the dust reduction device with the coal machine drum. At the same time, the sprayer is arranged in an annular manner, and the spray forms an annular water curtain, which can cover the coal machine drum in all directions to prevent coal dust from escaping.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mine dust control and relates to a coal mining machine annular drum tracking spray dust reduction device. Background Art

[0002] The current dust control system for coal mining working faces, such as the dust source tracking system, is effective for ideal working faces without spalling, but due to the complexity of the system, the large number of electronic components, the large number of fault points, the large maintenance workload, and the lack of control over the spalling impact dust generated when the coal machine cuts the coal, a large number of studies have shown that the main causes of coal spalling and dust generation include: the crushing force between the pick and the coal wall when the coal machine cuts the coal, the low water content of the coal seam makes the coal seam easy to break, and the high mine pressure. The current dust control solutions include:

[0003] (1) High-pressure spray tracking dust reduction is adopted from the top of the bracket. The high-pressure spray of the bracket requires the addition of a high-pressure pump station with a power of 110KW motor and the laying of a pipeline of about 2 kilometers. The spray head is fixedly installed on the top of the bracket. When the coal machine is cutting coal, the drum moves up and down. Its dust source is in a dynamic state of change. In addition, the straight-line distance between the spray head and the drum of the coal machine is about 3 meters. The 3-meter-long spray mist is easily blown away by the wind in the tunnel and is difficult to reach the drum of the coal machine, so the dust reduction effect cannot reach the expected effect.

[0004] (2) A dust curtain is hung on the bracket to control dust. The dust curtain is mainly used to isolate the dust in space to prevent the dust from spreading over a large area. However, the dust reduction effect is not ideal, and the dust curtain will affect the driver's operating line of sight and the operation of the cable mobile maintenance worker. Summary of the invention

[0005] In view of this, the purpose of the present invention is to solve the problem of controlling the impact dust caused by coal wall cutting and coal flakes, and to provide a coal mining machine annular drum tracking spray dust reduction device.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A coal mining machine annular drum tracking spray dust suppression device, comprising an annular sprayer, an adjustable telescopic bracket, a pulley, a pulley mounting seat, a pull rope, and a support seat; the annular sprayer is arranged at one end of the adjustable telescopic bracket and is located outside the coal mining machine drum; the other end of the adjustable telescopic bracket is rotatably connected to the support seat; the support seat is fixedly arranged on the coal mining machine body;

[0008] The pulley is rotatably mounted on the pulley mounting seat, and the pulley mounting seat is fixedly mounted on the housing of the coal machine drum motor and is located above the adjustable telescopic bracket;

[0009] A pull rope is provided on the pulley, one end of the pull rope is fixedly connected to the support seat, and the other end passes through the pulley and is fixedly connected to the adjustable telescopic bracket. The adjustable telescopic bracket is hoisted on the pulley through the pull rope; when the coal machine drum swings up and down, the pulley cooperates with the pull rope to drive the adjustable telescopic bracket to swing, so that the position of the annular sprayer changes dynamically with the coal machine drum.

[0010] Furthermore, the rotation center of the adjustable telescopic bracket is higher than the swing center of the coal machine drum.

[0011] Furthermore, the adjustable telescopic bracket includes a fixed rod, a telescopic rod and a locking mechanism; one end of the fixed rod is rotatably connected to the support seat, the telescopic rod is arranged at the other end of the fixed rod and slidingly cooperates with the fixed rod, and the locking mechanism is arranged on the fixed rod for locking the position of the telescopic rod; the annular sprayer is fixed on the telescopic rod, and the center position is adjusted by the telescopic rod.

[0012] Furthermore, the locking mechanism is a locking bolt, which is connected to the fixing rod through a thread, and the telescopic rod is sleeved in the fixing rod, and the position of the telescopic rod is fixed by tightening the locking bolt.

[0013] Furthermore, the annular sprayer includes a plurality of circularly distributed sprayers, all of which are directed toward the coal machine drum side, and the sprayed water mist forms an annular water curtain, covering the coal machine drum in the annular water curtain to prevent coal dust from escaping.

[0014] Furthermore, the distance between the annular sprayer and the coal machine drum is less than 1.8 meters.

[0015] Furthermore, the annular sprayer uses the coal machine's own cooling water as the spray water source.

[0016] Furthermore, the diameter of the coal machine drum is less than 2.5m.

[0017] The beneficial effects of the present invention are:

[0018] 1) The annular drum tracking spray dust suppression device for the coal mining machine of the present invention is adopted. When the coal mining machine is in the horizontal coal cutting state, the annular sprayer is directly opposite to the center of the coal mining machine drum; when the coal mining machine drum is raised, the lateral distance between the pulley and the fixed support seat on the machine body becomes shorter. When the total length of the pull rope remains unchanged, the vertical distance between the pulley and the adjustable telescopic bracket becomes longer, and the center of the adjustable telescopic bracket will drop below the center of the drum, thereby driving the annular sprayer to drop below the center of the drum. The higher the lifting is, the greater the center drop is, which can effectively avoid the interference between the annular sprayer and the hydraulic support retracting the shield plate; when the end of the coal mining machine performs the bottom sweeping operation, the coal mining machine drum rotates downward, and the pulley follows the drum rocker arm to swing down. At this time, the lateral distance between the pulley and the fixed support seat will become longer. When the total length of the pull rope remains unchanged, the vertical distance between the pulley and the adjustable telescopic bracket will become shorter. The pull rope pulls the adjustable telescopic bracket upward relatively, so that the center of the annular sprayer is higher than the center of the drum, effectively avoiding the interference of the bridge turntable baffle, so that the spray dust suppression device can operate normally.

[0019] 2) The present invention utilizes the flexibility of the pull rope and the motion relationship between the two swing mechanisms to cleverly achieve dynamic tracking of the dust suppression device with the coal machine drum, successfully avoids two dangerous points when the coal machine is cutting coal, and ensures the normal operation of the spray system.

[0020] 3) The device is less than 1.8 meters away from the drum, and always closely follows the drum to spray to prevent coal dust from escaping. At the same time, there is no need to configure a high-pressure pump station with high investment costs, and the coal machine's own cooling water can be directly used to fully meet the spray requirements.

[0021] 4) The sprayer is arranged in a ring, and the spray forms a ring-shaped water curtain, which is like a large umbrella, covering the drum of the coal machine in all directions to prevent coal dust from escaping. In addition, the required water pressure is relatively small, only 2-4MPa, and the cooling water of the coal machine itself can meet the use requirements, without the need to configure high-pressure water separately.

[0022] 5) The device of the present invention has low investment, simple operation, small maintenance workload, convenient installation, and can be widely used.

[0023] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0025] Figure 1It is a schematic diagram of the installation of the annular drum tracking spray dust suppression device of the coal mining machine in the present invention;

[0026] Figure 2 It is a schematic diagram of the structure of the annular drum tracking spray dust suppression device for coal mining machine in the present invention;

[0027] Figure 3 for Figure 1 Middle AA section view;

[0028] Figure 4 for Figure 1 Middle BB section view;

[0029] Figure 5 This is a schematic diagram of the coal machine top cutting state;

[0030] Figure 6 This is a schematic diagram of the horizontal device of the coal machine;

[0031] Figure 7 This is a schematic diagram of the coal machine bottom sweeping status.

[0032] Figure markings: 1-annular sprayer; 2-adjustable telescopic bracket; 3-pulley; 4-pull rope; 5-support seat; 6-coal mining machine body; 7-connecting bolt; 8-pulley mounting seat; 9-baffle; 10-nut; 11-mounting plate; 12-connecting pin; 13-connecting seat; 14-drum motor; 21-fixing rod; 22-telescopic rod; 23-locking bolt. DETAILED DESCRIPTION

[0033] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0034] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0035] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0036] See also Figures 1 to 7 , is a coal mining machine annular drum tracking spray dust suppression device, including an annular sprayer 1, an adjustable telescopic bracket 2, a pulley 3, a pulley mounting seat 8, a pull rope 4, and a support seat 5; the annular sprayer 1 is installed at one end of the adjustable telescopic bracket 2 and is located on the outside of the coal mining machine drum, and the distance between the annular sprayer 1 and the coal mining machine drum is less than 1.8 meters. One end of the adjustable telescopic bracket 2 is rotatably connected to the support seat 5 through a connecting pin 12; the support seat 5 is fixedly mounted on the coal mining machine body 6 through a connecting seat 13; the pulley 3 is rotatably mounted on the pulley mounting seat 8 through a pin shaft, and a baffle 9 is provided on one side of the pulley 3, and the outer side of the baffle 9 is locked by a nut 10. The pulley mounting seat 8 is fixed to the mounting plate 11 through a connecting bolt 7 and is located above the adjustable telescopic bracket 2, and the mounting plate 11 is fixedly mounted on the outer shell of the coal mining machine drum motor 14.

[0037] Among them, a pull rope 4 made of steel wire rope is provided on the pulley 3, one end of the pull rope 4 is fixedly connected to the support seat 5, and the other end passes through the pulley 3 and is fixedly connected to the adjustable telescopic bracket 2. The adjustable telescopic bracket 2 is hoisted on the pulley 3 through the pull rope 4; when the coal machine drum swings up and down, the pulley 3 cooperates with the pull rope 4 to drive the adjustable telescopic bracket 2 to swing, so that the position of the annular sprayer 1 changes dynamically with the coal machine drum.

[0038] The rotation center of the adjustable telescopic bracket 2 is higher than the swing center of the coal machine drum. The adjustable telescopic bracket 2 includes a fixed rod 21, a telescopic rod 22 and a locking bolt 23; one end of the fixed rod 21 is rotatably connected to the support seat 5, the telescopic rod 22 is sleeved in the fixed rod 21 and slidably cooperates with the fixed rod 21, and the locking bolt 23 is installed on the fixed rod 21 through a thread to lock the position of the telescopic rod 22; the annular sprayer 1 is fixed on the telescopic rod 22, and the center position is adjusted through the telescopic rod 22.

[0039] The diameter of the coal machine drum is less than 2.5m, and the annular sprayer 1 uses the cooling water of the coal machine itself as the spray water source, with a water pressure of 2-4MPa. The annular sprayer 1 includes a plurality of circularly distributed sprayers, all of which are directed toward the side of the coal machine drum. The sprayed water mist forms an annular water curtain, which covers the coal machine drum in the annular water curtain to prevent coal dust from escaping.

[0040] When the coal machine is in the horizontal coal cutting state, the annular sprayer 1 is directly opposite to the center of the coal machine drum; when the coal machine drum is raised, the lateral distance between the pulley 3 and the fixed support seat 5 on the fuselage becomes shorter. When the total length of the pull rope 4 remains unchanged, the vertical distance between the pulley 3 and the adjustable telescopic bracket 2 becomes longer, and the center of the adjustable telescopic bracket 2 will drop below the center of the drum, thereby driving the annular sprayer 1 to drop below the center of the drum. The higher the lifting, the greater the center drop, which can effectively avoid the interference between the annular sprayer 1 and the hydraulic support retracting the shield plate; when the end of the coal machine performs the bottom sweeping operation, the coal machine drum rotates downward, and the pulley 3 follows the drum rocker arm to swing down. At this time, the lateral distance between the pulley 3 and the fixed support seat 5 will become longer. When the total length of the pull rope 4 remains unchanged, the vertical distance between the pulley 3 and the adjustable telescopic bracket 2 will become shorter. The pull rope 4 pulls the adjustable telescopic bracket 2 upward relatively, so that the center of the annular sprayer 1 is higher than the center of the drum, effectively avoiding the interference of the bridge turntable baffle 9, so that the spray dust suppression device can operate normally.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A coal mining machine annular drum tracking spray dust suppression device, characterized in that: It includes an annular sprayer, an adjustable telescopic bracket, a pulley, a pulley mounting seat, a pull rope, and a support seat; the annular sprayer is arranged at one end of the adjustable telescopic bracket and is located outside the coal machine drum; the other end of the adjustable telescopic bracket is rotatably connected to the support seat; the support seat is fixedly arranged on the coal mining machine body; The pulley is rotatably mounted on the pulley mounting seat, and the pulley mounting seat is fixedly mounted on the housing of the coal machine drum motor and is located above the adjustable telescopic bracket; A pull rope is provided on the pulley, one end of the pull rope is fixedly connected to the support seat, and the other end passes through the pulley and is fixedly connected to the adjustable telescopic bracket. The adjustable telescopic bracket is hoisted on the pulley through the pull rope; when the coal machine drum swings up and down, the total length of the pull rope remains unchanged, and the pulley cooperates with the pull rope to drive the adjustable telescopic bracket to swing, so that the position of the annular sprayer changes dynamically with the coal machine drum.

2. The coal mining machine annular drum tracking spray dust suppression device according to claim 1 is characterized in that: The rotation center of the adjustable telescopic bracket is higher than the swing center of the coal machine drum.

3. The coal mining machine annular drum tracking spray dust suppression device according to claim 1 is characterized in that: The adjustable telescopic bracket includes a fixed rod, a telescopic rod and a locking mechanism; one end of the fixed rod is rotatably connected to the support seat, the telescopic rod is arranged at the other end of the fixed rod and slidably cooperates with the fixed rod, and the locking mechanism is arranged on the fixed rod for locking the position of the telescopic rod; the annular sprayer is fixed on the telescopic rod, and the center position is adjusted by the telescopic rod.

4. The coal mining machine annular drum tracking spray dust suppression device according to claim 3 is characterized in that: The locking mechanism is a locking bolt, which is connected to the fixing rod through threads. The telescopic rod is sleeved in the fixing rod, and the position of the telescopic rod is fixed by tightening the locking bolt.

5. The coal mining machine annular drum tracking spray dust suppression device according to claim 1 is characterized in that: The annular sprayer includes a plurality of sprayers distributed in a circular shape, all of which are directed toward the side of the coal machine drum. The sprayed water mist forms an annular water curtain, which covers the coal machine drum in the annular water curtain to prevent coal dust from escaping.

6. The coal mining machine annular drum tracking spray dust suppression device according to claim 1, characterized in that: The distance between the annular sprayer and the coal machine drum is less than 1.8 meters.

7. The coal mining machine annular drum tracking spray dust suppression device according to claim 1 is characterized by: The annular sprayer uses the cooling water of the coal machine itself as the spray water source.

8. The coal mining machine annular drum tracking spray dust suppression device according to claim 1, characterized in that: The diameter of the coal machine drum is less than 2.5m.

Images