Mining machines

Abstract

A mining machine includes a frame, a traveling device mounted on the frame, and a conveyor. The frame includes a front end and a rear end along the longitudinal direction of the mining machine. The conveyor is mounted to the frame at or near the rear end. The mining machine also includes a cutting unit movable along the vertical direction of the mining machine, the cutting unit including a cutting head and a boom connected thereto, the boom being movably mounted to or near the front end of the frame. The mining machine also includes a dust filtration device mounted adjacent to the rear of the cutting head along the longitudinal direction, the dust filtration device including a dust collection duct directly mounted to the boom and a dust removal system connected to the dust collection duct, the dust removal system being movable relative to the conveyor in the longitudinal direction or along the inclined extension direction of the conveyor.

Description

Technical Field

[0001] This utility model relates to mining equipment, and more specifically to a mining machine. Background Technology

[0002] Mining machines are used to cut through strata (such as coal and other mineral deposits), and they typically operate deep within the mine.

[0003] This type of mining machine has a horizontal cylindrical cutting head, which includes a rotating drum and cutting teeth mounted on it. The cutting head is generally fixed to a cantilever that can move up and down (i.e., in the vertical direction). As the cutting head rotates and the mining machine (by means of wheels, tracked walking devices, etc.) moves forward, the cut minerals are conveyed backward by a conveyor.

[0004] During mining operations, particulate pollutants such as dust are generated, which contaminate the environment around the mining machinery and endanger mining personnel. To suppress dust, mining machines are typically equipped with dust filters to filter dust-laden air. These filters generally include a dust collection duct and a connected dust removal system. The dust collection duct is positioned adjacent to and behind the cutting head. Air carrying pollutants is drawn into the dust collection duct for filtering and collecting entrained dust particles. The dust removal system is installed downstream of the dust collection duct and is designed to humidify the contaminated airflow and separate the humidified airflow from the entrained dust particles. In the prior art, the dust filter is mounted on a top canopy, which is movably mounted to the frame of the mining machine via a bracket. The canopy has a generally planar construction and is adapted to rise vertically relative to the frame with the bracket to contact the mine roof, thereby providing structural support.

[0005] CN201480005867.4 discloses an example of a dust filtering device. In this example, the guard plate, along with the dust filtering device, is raised and lowered parallel to the boom to ensure that the integrated pipe is positioned at a suitable height close to the rear of the cutting head. A disadvantage of this dust filtering device is that the raising and lowering of the dust filtering device needs to be adjusted separately to position it close to the rear of the cutting head. Utility Model Content

[0006] The purpose of this invention is to provide a mining machine in which the arrangement of the dust filtering device is improved compared to the arrangement of the prior art.

[0007] According to this utility model, a mining machine is provided, including a frame, a traveling device mounted on the frame, and a conveyor. The frame includes a front end and a rear end along the longitudinal direction of the mining machine. The mining machine also includes a cutting unit movable along the vertical direction of the mining machine, the cutting unit including a cutting head and a boom connected thereto, the boom being movably mounted to or near the front end of the frame. The mining machine also includes a dust filtering device mounted along the longitudinal direction (e.g., adjacent to) behind the cutting head, the dust filtering device including (e.g., directly) mounted to the boom a dust collection duct and a dust removal system connected to the dust collection duct, the dust removal system being movable relative to the conveyor along the longitudinal direction or along the (inclined) extension direction of the conveyor.

[0008] According to the mining machine of this invention, the dust filter is directly mounted on the boom behind the cutting head, allowing the dust filter to rise and fall with the boom without the need for separate adjustment of the dust filter's height. Furthermore, this invention is particularly suitable for low-height mining machines (e.g., those without a top guard plate) operating in tunnels with low ceilings.

[0009] According to an embodiment, the walking device is constructed as a ring track that is mounted around the frame. For example, a mining machine includes a pair of tracks located on either side of the mining machine.

[0010] According to an embodiment, the cutting head includes a rotatable cutting roller and cutting teeth mounted on it.

[0011] According to an embodiment, the cutting unit further includes a guide rod mounted on the frame at or near the front end of the frame and a slider, for example, in the form of a sliding sleeve, that can slide along the guide rod. Alternatively, the frame includes a guide rod located at or near the front end of the frame, and the cutting unit also includes a slider that can slide along the guide rod. The guide rod extends in a front-rear direction, and the boom is pivotally mounted to the slider relative to the slider, allowing the cutting unit to move in a vertical direction.

[0012] The conveyor runs along the front and rear of the mining machine, including the front and rear ends. The dust collection system is located at or near the front of the conveyor. The conveyor's tilt angle is adjustable.

[0013] According to an embodiment, the dust collection duct is bolted to the boom.

[0014] According to an embodiment, the dust collection system is connected to the dust collection duct via a hinge or via a hinge through an intermediate channel. Preferably, the dust collection system is connected to the dust collection duct at or near its front end.

[0015] According to an embodiment, the dust removal system is configured to slide along the top of the conveyor. For example, the dust removal system has a roller assembly at the rear lower part that can slide along the top of the conveyor.

[0016] According to an embodiment, the dust collection duct includes a first part and a second part, wherein the first part is connected to the dust collection system, and the second part is connected to the boom and configured to be replaceable. The first part can also be simultaneously connected to the boom. This arrangement improves the flexibility of the dust filtration device to meet the needs of different customers.

[0017] According to an embodiment, the dust removal system includes a combination of a wet dust collector and one or more atomizing nozzles, or only includes a dry dust removal system. Attached Figure Description

[0018] The features and advantages of this utility model will become apparent from the following detailed description of embodiments with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, those skilled in the art can obtain all other embodiments without inventive effort, and these embodiments all fall within the protection scope of this utility model. In the accompanying drawings:

[0019] Figure 1 This is a schematic perspective view of the mining machine according to an embodiment of the present utility model;

[0020] Figure 2 yes Figure 1 A schematic side view of the mining machine shown, where the cutting unit is not shown;

[0021] Figure 3 yes Figure 1 A schematic top view of the mining machine shown, where the cutting unit is not shown;

[0022] Figure 4 yes Figure 1 The partial perspective view of the mining machine shown illustrates the dust removal system and dust collection pipes, as well as the cantilever and conveyor.

[0023] Figure 5 yes Figure 4 A partial side view;

[0024] Figure 6 yes Figure 4 The partial perspective view shown illustrates the dust removal system and conveyor. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below with reference to the accompanying drawings, which relate to mining machinery. However, this utility model can also be applied to machines constructed for excavating tunnels.

[0026] refer to Figure 1 The mining machine 1 includes a frame 10 and a pair of annular driven tracks 20 mounted on both sides around the frame 10 (see...). Figure 3The machine frame 10 is used to propel the mining machine 1 on the ground. It includes a cutting unit 30, a conveyor 40, a dust removal system 50, and a dust collection pipe 60, where the dust removal system 50 and dust collection pipe 60 constitute the dust filtration device for the mining machine 1. The frame 10 includes a front end and a rear end along the longitudinal direction of the mining machine 1. The cutting unit 30 is mounted to the frame 10 at or near the front end, and the conveyor 40 is mounted to the frame 10 at or near the rear end. The cutting unit 30 includes a boom 31, a rotatable cutting roller 32 connected to the boom 31, and cutting teeth 33 mounted on it. The conveyor 40 is used to transport the material cut by the cutting unit 30 and also includes a front end and a rear end along the longitudinal direction of the mining machine 1. The dust removal system 50 is positioned above the front end of the conveyor 40.

[0027] like Figure 2 and Figure 3 As shown, the cutting unit 30 is capable of moving up and down in the vertical direction UD and in the front-to-back direction FR. Movement in the front-to-back direction FR is achieved by a slider 34 in the form of a sliding sleeve and guide rods 35 mounted on both sides at or near the front end of the frame 10. The guide rods 35 extend through the sliding sleeve to allow the slider 34 to slide along them. Movement in the vertical direction UD is achieved by a boom 31 pivotally connected to the slider 34 relative to it, for example, a bracket 34a connected to the slider 34. Figure 3 and Figure 5 As shown in the diagram. In particular, the boom 31 (specifically the end connected to the cutting roller 32) can be raised or lowered relative to the frame 10 in the vertical direction UD. The conveyor 40 can adjust its tilt angle.

[0028] Go back and refer to Figure 4 The dust removal system 50 is connected to the dust collection duct 60 via a hinge 70, and the dust removal system 50 is supported at the rear on top of the conveyor 40 in a manner that allows it to move relative to the conveyor 40 in the front-rear direction FR, for example via a roller assembly 80, while the dust collection duct 60 is directly mounted to the boom 31 (e.g., via bolts).

[0029] Refer again Figure 5 The dust removal system 50 is configured to slide on top of the conveyor 40 via a roller assembly 80 located at the rear lower part. The specific construction of the roller assembly 80 is as follows... Figure 6 As shown, it includes a support portion connected to the dust collection system 50 and rollers respectively disposed on both sides. Furthermore, Figure 5 The dust collection duct 60 is also shown to include a first section 61 and a second section 62. The first section 61 is connected to the dust collection system 50 and also to the boom 31, and the second section 62 is connected to the boom and is configured to be replaceable.

[0030] The dust removal system 50 can be configured as a combination of a wet dust collector and one or more atomizing nozzles, or as a dry dust removal system.

[0031] According to the mining machine 1 of this utility model, the boom 31 can move up and down in the vertical direction and can move forward and backward in the cooperative action of the slider and the guide rod, and the dust filter can follow the boom 31 to move up and down in the vertical direction and forward and backward in the forward and backward direction.

[0032] Through the above description of the disclosed embodiments, those skilled in the art will be able to implement or use the present invention. Various modifications to these embodiments will also be apparent to those skilled in the art. The general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein, but covers the widest scope consistent with the principles disclosed herein.

Claims

1. A mining machine, comprising a frame, a traveling device mounted on the frame, a cutting unit movable along the vertical direction of the mining machine, and a conveyor, wherein the frame includes a front end and a rear end along the longitudinal direction of the mining machine, the conveyor is mounted to the frame at or near the rear end of the frame, the cutting unit includes a cutting head and a boom connected thereto, the boom being movably mounted to or near the front end of the frame, characterized in that, The mining machine also includes a dust filter device installed in the front-to-back direction behind the cutting head. The dust filter device includes a dust collection pipe installed on the boom and a dust removal system connected to the dust collection pipe. The dust removal system is movable relative to the conveyor in the front-to-back direction or in the inclined extension direction of the conveyor.

2. The mining machine according to claim 1, characterized in that, The walking device is constructed as a ring track, which is installed around the frame.

3. The mining machine according to claim 1, characterized in that, The cutting head includes a rotatable cutting roller and cutting teeth mounted on it.

4. The mining machine according to any one of claims 1-3, characterized in that, The cutting unit also includes a guide rod mounted on the frame at or near the front end of the frame and a slider that can slide along the guide rod, or the frame includes a guide rod located at or near the front end of the frame and the cutting unit also includes a slider that can slide along the guide rod, wherein the guide rod extends in a front-rear direction and the boom is mounted to the slider in a manner that allows it to pivot relative to the slider.

5. The mining machine according to any one of claims 1-3, characterized in that, The conveyor runs along the front and rear directions of the mining machine, including the front and rear ends, and the dust removal system is located at or near the front of the conveyor.

6. The mining machine according to any one of claims 1-3, characterized in that, The dust collection system is connected to the dust collection duct via a hinge or via a central channel.

7. The mining machine according to any one of claims 1-3, characterized in that, The dust removal system is designed to slide on top of the conveyor.

8. The mining machine according to claim 7, characterized in that, The dust removal system has a roller assembly at the lower rear that can slide along the top of the conveyor.

9. The mining machine according to any one of claims 1-3, characterized in that, The dust collection duct includes a first part and a second part, wherein the first part is connected to the dust collection system and the second part is connected to the boom and is configured to be replaceable.

10. The mining machine according to any one of claims 1-3, characterized in that, The dust collection system may include a combination of a wet dust collector and one or more atomizing nozzles, or may consist only of a dry dust collection system.

11. The mining machine according to claim 6, characterized in that, The dust collection system is connected to the dust collection duct at or near its front end.

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