Cutting head arrangement and coal winning machine

Abstract

This application provides a cutting head device and a coal mining machine, belonging to the technical field of mining equipment. The cutting head device includes a body, at least two arms, and at least two cutting heads. The at least two arms are arranged sequentially at intervals along a vertical direction. The first end of each arm is swayably connected to the front end of the body, allowing the second end of each arm to swing in a vertical plane. The at least two cutting heads are respectively connected to the second end of each arm, and the distance between each cutting head and the body gradually decreases along a vertically downward direction. This application improves mining efficiency by increasing the number of arms and cutting heads. By adjusting the distance between each cutting head and the body, steps can be formed on the coal seam during mining, thereby reducing the height difference of broken coal falling downwards, reducing the splash distance of coal, and making coal easier to collect.

Description

Technical Field

[0001] This application relates to the field of mining equipment technology, and in particular to a cutting head device and a coal mining machine. Background Technology

[0002] The rolling continuous coal mining machine has a cutting mechanism installed on the front side of the frame, which extracts the coal located in front of the mining machine.

[0003] However, due to the lack of effective control, the coal mined by the existing coal mining machines splashes far after falling. The loading mechanism of the coal mining machine itself cannot collect the coal that has splashed so far, and other personnel are needed to assist in collecting the coal. As a result, the actual use effect of the rolling continuous mining machine is not ideal. Summary of the Invention

[0004] This application provides a cutting head device and a coal mining machine to solve the problem that the coal mined by existing coal mining machines splashes far away and cannot be fully collected by the loading mechanism of the coal mining machine itself.

[0005] On one hand, this application provides a cutting head device, including: a body, at least two arms and at least two cutting heads, the at least two arms being arranged sequentially at intervals along the vertical direction, the first end of each arm being swayably connected to the front end of the body so that the second end of each arm can swing in the vertical plane; the at least two cutting heads are respectively connected to the second end of each arm, and the distance between each cutting head and the body gradually decreases along the vertically downward direction.

[0006] Optionally, in two adjacent cutting heads, the lowest point of the upper cutting head and the highest point of the lower cutting head are located on the same horizontal plane.

[0007] Optionally, the cutting head includes a frame, at least one first roller and at least one second roller. The frame is connected to the second end of the corresponding machine arm. The first roller and the second roller are coaxially arranged and rotatably connected to the frame. The surfaces of the first roller and the second roller are helically provided with helical blades. The helical direction of the helical blades on the first roller is opposite to the helical direction of the helical blades on the second roller.

[0008] Optionally, there may be multiple first rollers and / or multiple second rollers, with multiple first rollers arranged adjacent to each other and / or multiple second rollers arranged adjacent to each other.

[0009] Optionally, the helical blade includes a cutting seat and a plurality of cutting teeth. The cutting seat is helically fixed to the surface of the corresponding first or second roller, and the plurality of cutting teeth are fixed to the cutting seat at uniform intervals along the extending direction of the cutting seat.

[0010] Optionally, the cutting head further includes a coal crushing assembly, which is mounted on the frame and located between the first drum and the second drum, and / or, the coal crushing assembly is located between two adjacent first drums, and / or the coal crushing assembly is located between two adjacent second drums.

[0011] Optionally, the coal crushing assembly includes a coal crushing seat and a plurality of coal crushing teeth. The coal crushing seat is fixed on the frame and is coaxially arranged with the first drum. The plurality of coal crushing teeth are distributed and fixed on the surface of the coal crushing seat.

[0012] Optionally, two negative pressure dust removal devices are spaced apart on the machine body, and each of the machine arms is located between the two negative pressure dust removal devices, with the negative pressure ports of the two negative pressure dust removal devices facing at least one of the cutting heads.

[0013] Optionally, at least part of the arm is a telescopic arm.

[0014] On the other hand, this application provides a coal mining machine, including: the above-mentioned cutting head device and loading mechanism, wherein the loading mechanism is installed on the machine body and is used to transport the coal cut by the cutting head.

[0015] The beneficial effects of this application are as follows: The cutting head device and coal mining machine provided by this application, by setting at least two arms and installing a cutting head on each arm, can mine coal together through multiple cutting heads, thereby improving coal mining efficiency. Simultaneously, by gradually reducing the distance between each cutting head and the machine body along the vertically downward direction, at least one step surface can be formed on each layer during the mining process. Coal material located on the step surface can first fall onto the step surface and then fall from the step surface onto the ground. This shortens the height difference of each coal drop, reduces the splash distance of the coal, and makes the coal easier to collect. Attached Figure Description

[0016] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0017] Figure 1 A side view of the coal mining machine provided in an embodiment of this application;

[0018] Figure 2 This is a schematic diagram of the cutting head device provided in the embodiments of this application;

[0019] Figure 3 This is the first usage state of the cutting head device provided in the embodiments of this application;

[0020] Figure 4 This is the second usage state of the cutting head device provided in the embodiments of this application;

[0021] Figure 5 The third usage state of the cutting head device provided in the embodiments of this application;

[0022] Figure 6 The fourth usage state of the cutting head device provided in the embodiments of this application.

[0023] Figure label:

[0024] 100 - Body; 110 - Feed mechanism;

[0025] 200 - Arm; 220 - Telescopic cylinder;

[0026] 300-Cutting head; 310-Frame; 320-First drum; 330-Second drum; 340-Helical blade; 341-Cutting seat; 342-Cutting tooth; 350-Coal crushing assembly; 351-Coal crushing seat; 352-Coal crushing tooth;

[0027] 500-Negative Pressure Dust Removal Device;

[0028] 600 - Loading mechanism.

[0029] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0030] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application.

[0031] The terms “first,” “second,” “third,” “fourth,” etc., as used in this application (if applicable), are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in a sequence other than those illustrated or described herein.

[0032] In this application, the terms "exemplarily" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplarily" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplarily" or "for example" is intended to present the relevant concepts in a specific manner.

[0033] In related technologies, the coal mined by existing coal mining machines is not effectively controlled, and the coal falls and splashes far away, requiring additional manpower to assist in collecting the coal. As a result, the actual use effect of the rolling continuous mining machine is not ideal.

[0034] In view of this, the cutting head device provided in this application, by setting at least two arms and installing a cutting head on each arm, can improve coal mining efficiency by using multiple cutting heads to mine coal together. Simultaneously, by gradually reducing the distance between each cutting head and the machine body along the vertically downward direction, at least one step surface can be formed on each layer during mining. Coal material located on the step surface can first fall onto the step surface and then fall to the ground. This reduces the splash distance of the coal by shortening the height difference of each fall, making the coal easier to collect.

[0035] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0036] like Figures 1 to 6 As shown, this application provides a cutting head 300 device, including a body 100, at least two arms, and at least two cutting heads 300. The at least two arms are arranged sequentially at intervals in the vertical direction. The first end of each arm is swayably connected to the front end of the body 100 so that the second end of each arm can swing in the vertical plane. Each cutting head 300 is connected to the second end of each arm, and the distance between each cutting head 300 and the body 100 gradually decreases in the vertically downward direction.

[0037] By adjusting the swing angle of each arm relative to the machine body 100, the height of each cutting head 300 can be adjusted, thereby adjusting the overall mining height of the cutting head 300. By arranging the arms vertically at intervals, the cutting heads 300 connected to each arm are also arranged vertically. This increases the mining efficiency of the coal seam when multiple cutting heads 300 are used to mine the coal seam. Furthermore, by setting the distance between each cutting head 300 and the machine body 100 to gradually decrease vertically downwards, the cutting head 300 at a lower height is closer to the machine body 100. This allows for more precise cutting as the cutting head 300 moves towards the ore seam for the cutting action (e.g., ...). Figure 5 When (as shown), each cutting head 300 can form at least one step on the coal seam, so that when the cutting head 300 performs the bottom-pulling action (as shown), Figure 6 When the coal is pulled back, the corresponding coal material will fall onto the steps one by one. Eventually, all the coal material will fall to the ground and be collected. Because the steps shorten the height difference of the falling coal, the potential energy of the coal falling downwards is reduced, and the distance of the coal splashing is shortened. As a result, the coal material is more concentrated after landing, and it is easier for the loading mechanism 600 on the coal mining machine to collect the coal material. Therefore, there is no need to set up other personnel to assist in collecting the coal material.

[0038] In addition, since multiple cutting heads can work simultaneously during coal mining operations, coal mining efficiency can be greatly improved, thereby increasing the economic benefits of coal mining.

[0039] In some alternative implementations, the lowest point of the upper cutting head 300 and the highest point of the lower cutting head 300 are on the same horizontal plane.

[0040] This configuration ensures that there are no gaps between adjacent cutting heads 300 in the horizontal direction. When each cutting head 300 performs continuous mining and synchronous operation on the coal seam, the integrity of the mine wall cross section can be guaranteed, which greatly improves safety and production efficiency.

[0041] It should be noted that a telescopic hydraulic cylinder 220 is connected between the machine body 100 and the machine arm 200. The extension and retraction of the telescopic hydraulic cylinder 220 controls the swing angle of the machine arm 200, thereby controlling the upward swing of the cutting head 300 to achieve the lifting action (e.g., Figure 3 (as shown) and downward swing to achieve the cutting action (as shown) Figure 5 (As shown).

[0042] Regarding the specific structure of the cutting head 300, in some optional embodiments, the cutting head 300 includes a frame 310, at least one first roller 320 and at least one second roller 330. The frame 310 is connected to the second end of the corresponding machine arm. The first roller 320 and the second roller 330 are coaxially arranged and rotatably connected to the frame 310. The surfaces of the first roller 320 and the second roller 330 are both spirally provided with spiral blades 340. The spiral direction of the spiral blades 340 on the first roller 320 is opposite to the spiral direction of the spiral blades 340 on the second roller 330.

[0043] The first roller 320 and the second roller 330 on the same cutting head 300 rotate in the same direction. During the mining process, the rotation of the first roller 320 and the second roller 330 drives the corresponding spiral blades 340 to rotate. The coal material formed after the spiral blades 340 cut the coal seam can move along the spiral direction of the spiral blades 340 under the drive of the rotation of the spiral blades 340. Since the spiral directions of the spiral blades 340 on the first roller 320 and the second roller 330 are opposite, the coal material falling on the first roller 320 and the second roller 330 can move towards the center and gather together under the drive of the corresponding spiral blades 340. This makes the coal material more concentrated and easier to collect.

[0044] In some alternative embodiments, there are multiple first rollers 320 and / or multiple second rollers 330, with multiple first rollers 320 arranged adjacent to each other and / or multiple second rollers 330 arranged adjacent to each other.

[0045] By adjusting the number of the first roller 320 and the second roller 330, the length of the cutting head 300 can be controlled, thereby adjusting the cutting width of the cutting head 300 when mining the coal seam. Arranging identical first rollers 320 or identical second rollers 330 adjacent to each other allows for continuous conveying of coal.

[0046] Regarding the specific structure of the 340 helical blade, such as Figure 2 As shown, in some optional embodiments, the helical blade 340 includes a cutting seat 341 and a plurality of cutting teeth 342. The cutting seat 341 is helically fixed to the surface of the corresponding first roller 320 or second roller 330, and the plurality of cutting teeth 342 are fixed on the cutting seat 341 at uniform intervals along the extending direction of the cutting seat 341.

[0047] It is understood that the cutting seat 341 is spiral-shaped and fixed on the corresponding first roller 320 and second roller 330. The cutting seat 341 can guide the coal material and also provide an installation base for the cutting teeth 342. The cutting teeth 342 are fixed on the cutting seat 341. When mining the coal seam, the cutting teeth 342 contact the coal seam and crush the coal seam into coal material. The coal material can fall from the gap between each cutting tooth 342 onto the corresponding first roller 320 or second roller 330, and then be conveyed by the cutting seat 341.

[0048] The aforementioned cutting seat 341 may include several cutting seat units, which are connected and fixed adjacently to the corresponding first roller 320 and second roller 330, thereby forming a spiral shape together through the several cutting units. Of course, in other embodiments, the cutting seat 341 may also directly adopt an integrally formed spiral structure.

[0049] Optionally, the cutting tooth 342 and the cutting seat 341 are detachably connected. When the cutting tooth 342 is severely worn and needs to be replaced, the cutting tooth 342 can be disassembled and replaced.

[0050] like Figure 2 As shown, in some optional embodiments, the cutting head 300 further includes a coal crushing assembly 350, which is mounted on the frame 310 and is located between the first drum 320 and the second drum 330, and / or, the coal crushing assembly 350 is located between two adjacent first drums 320, and / or, the coal crushing assembly 350 is located between two adjacent second drums 330.

[0051] The coal crushing assembly 350 is designed to crush coal seams with high hardness. The coal crushing assembly 350 is positioned between the first drum 320 and the second drum 330, and / or between two adjacent first drums 320, and / or between two adjacent second drums 330. This allows large pieces of coal crushed by the coal crushing assembly 350 to fall onto the first drum 320 or the second drum 330 from both sides, where they are further cut into smaller pieces by the spiral blades 340.

[0052] Optionally, the length of the coal breaking assembly 350 along the axial direction of the first drum 320 and the second drum 330 is greater than the length of the cutting tooth 342 along the axial direction of the first drum 320 and the second drum 330, so that when cutting the coal seam, the coal breaking assembly 350 contacts the coal seam before the cutting tooth 342.

[0053] Regarding the specific structure of the coal breaking assembly 350, such as Figure 2As shown, in some optional embodiments, the coal breaking assembly 350 includes a coal breaking seat 351 and a plurality of coal breaking teeth 352. The coal breaking seat 351 is fixed on the frame 310 and is coaxially arranged with the first drum 320. The plurality of coal breaking teeth 352 are distributed and fixed on the surface of the coal breaking seat 351.

[0054] The coal seam can be crushed by the coal crushing teeth 352 distributed on the coal crushing seat 351. Furthermore, when the coal crushing teeth 352 are severely worn, they can be replaced by disassembling them.

[0055] To reduce dust generated during coal mining. For example Figure 2 As shown, in some optional embodiments, two negative pressure dust removal devices 500 are spaced apart on the machine body 100, and each machine arm is located between the two negative pressure dust removal devices 500. The negative pressure ports of the two negative pressure dust removal devices 500 face at least one cutting head 300.

[0056] The negative pressure generated by the negative pressure dust removal device 500 acts at the negative pressure port. Since the negative pressure port faces the cutting head 300, a large amount of dust generated by the cutting head 300 during coal mining will be sucked into the negative pressure port, reducing environmental pollution and creating a green mine.

[0057] In some alternative implementations, such as Figure 2 As shown, each arm 200 is connected to the body 100 by a feeding mechanism 110, which drives the arm 200 to move horizontally. The feeding mechanism 110 can drive the arm 200 and the cutting head 300 to move horizontally, so that the cutting head 300 moves forward to achieve a propulsive action (e.g., ...). Figure 4 (as shown) and moving backward (backward) to achieve the bottoming action (as shown) Figure 6 (As shown).

[0058] Based on the above-described cutting device, in a second aspect, this application provides a coal mining machine, which includes the above-described cutting device and a loading mechanism 600. The loading mechanism 600 is installed on the machine body 100 and is used to collect and transport the coal cut by the cutting head 300.

[0059] The loading mechanism 600 can transport the coal cut by the cutting head 300 backward.

[0060] Optionally, the loading mechanism 600 may be a star wheel loading mechanism.

[0061] This application also provides a cutting process that can be achieved by the above-mentioned cutting head device or coal mining machine, the cutting process including the following steps:

[0062] S100: Control each cutting head 300 to move forward a preset distance toward the coal seam so as to cut out step surfaces of different depths on the coal seam through the cutting head 300;

[0063] S200: Place each cutting head 300 on the corresponding step surface;

[0064] S300: Controls each arm 200 to swing downwards synchronously, so that each cutting head 300 cuts the coal seam synchronously downwards;

[0065] S400: Controls each cutting head 300 to synchronously retreat a preset distance to push the cut coal away from the corresponding step;

[0066] S500: Control the machine body 100 to move a preset distance toward the coal seam, and repeat steps S200-S500.

[0067] It is understandable that the upward swing of the boom 200mm in the coal mining machine is for... Figure 3 The lifting action shown refers to the forward movement of the feed mechanism 110 in the coal mining machine. Figure 4 The propulsion action shown is that the downward swing of the boom 200 of the coal mining machine is for propulsion. Figure 5 The downward cutting action shown refers to the rearward movement of the feed mechanism 110 in the coal mining machine. Figure 6 The pulling action is shown. Depth refers to the length the cutting head 300 penetrates into the coal seam. Because the distance between each cutting head 300 and the machine body 100 is different, the length the cutting head 300 penetrates into the coal seam after the pushing action also varies, forming different step surfaces on the coal seam. These step surfaces provide support for the cutting head 300. For example... Figure 4-6 As shown, when the cutting head 300 performs the downward cutting action, the weight of the cutting head 300 itself can be used to reduce the load during cutting, saving energy, increasing efficiency, and expanding production capacity. When the arm 200 drives the cutting head device to move backward to perform the bottom pulling action, the arm 200 will push the cut coal material together to move in the direction away from the coal seam, so that the coal material leaves the step it is on and falls down to the next step or the ground (the coal material on the last step will fall to the ground). By forming multiple steps, the height difference of the coal material when it falls can be reduced, thereby reducing the potential energy of the coal material when it falls, reducing the distance of the coal material splashing, so that the coal material can be collected and transported by the loading mechanism 600 of the coal mining machine itself.

[0068] In some alternative implementations, for open-pit coal seams with limited height, the following steps are required before proceeding to step S100: control the boom 2 to swing upward to raise the height of the cutting head 300 until the height of the cutting head 300 at the top is higher than the height of the coal seam.

[0069] With this configuration, after the cutting head 300 travels a preset distance towards the coal seam, the cutting head 300 at the top is positioned at the top of the coal seam. At this point, the cutting head 300 at the top can be placed on the top surface of the open-pit coal seam so that the cutting head device can cut the entire coal seam.

[0070] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein.

[0071] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope.

Claims

1. A cutting head device, characterized in that, include; Body (100); At least two robotic arms (200) are arranged sequentially at intervals along the vertical direction, and the first end of each robotic arm (200) is swayably connected to the front end of the body (100) so that the second end of each robotic arm (200) can swing in the vertical plane; At least two cutting heads (300) are respectively connected to the second end of each of the arms (200), and the distance between each cutting head (300) and the body (100) gradually decreases in the vertically downward direction; The cutting head (300) includes a frame (310), at least one first roller (320) and at least one second roller (330). The frame (310) is connected to the second end of the corresponding arm (200). The first roller (320) and the second roller (330) are coaxially arranged and rotatably connected to the frame (310). The surfaces of the first roller (320) and the second roller (330) are both spirally provided with spiral blades (340). The spiral direction of the spiral blades (340) on the first roller (320) is opposite to the spiral direction of the spiral blades (340) on the second roller (330). The spiral blade (340) includes a cutting seat (341) and a plurality of cutting teeth (342). The cutting seat (341) is spirally fixed to the surface of the corresponding first roller (320) or second roller (330). The plurality of cutting teeth (342) are evenly spaced on the cutting seat (341) along the extending direction of the cutting seat (341). The cutting head (300) further includes a coal breaking assembly (350), which is mounted on the frame (310) and configured to contact the coal seam before the cutting teeth (342); the coal breaking assembly (350) is located between the first roller (320) and the second roller (330), and / or, the coal breaking assembly (350) is located between two adjacent first rollers (320), and / or, the coal breaking assembly (350) is located between two adjacent second rollers (330).

2. The cutting head device according to claim 1, characterized in that, Of the two adjacent cutting heads (300), the lowest point of the upper cutting head (300) and the highest point of the lower cutting head (300) are on the same horizontal plane.

3. The cutting head device according to claim 1, characterized in that, The number of the first roller (320) and / or the second roller (330) is multiple, and the multiple first rollers (320) are arranged adjacent to each other and / or the multiple second rollers (330) are arranged adjacent to each other.

4. The cutting head device according to claim 1, characterized in that, The coal breaking assembly (350) includes a coal breaking seat (351) and a plurality of coal breaking teeth (352). The coal breaking seat (351) is fixed on the frame (310) and is coaxially arranged with the first roller (320). The plurality of coal breaking teeth (352) are distributed and fixed on the surface of the coal breaking seat (351).

5. The cutting head device according to claim 1, characterized in that, Two negative pressure dust removal devices (500) are spaced apart on the machine body (100), and each of the machine arms (200) is located between the two negative pressure dust removal devices (500). The negative pressure ports of the two negative pressure dust removal devices (500) face at least one of the cutting heads (300).

6. The cutting head device according to claim 1, characterized in that, Each of the robotic arms (200) is connected to the body (100) by a feeding mechanism (110), which is used to drive the robotic arms (200) to move horizontally.

7. A coal mining machine, characterized in that, The device includes a cutting head and a loading mechanism (600) as described in any one of claims 1-6, the loading mechanism (600) being mounted on the body (100) and used for transporting coal cut by the cutting head (300).

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