Cutting head device and coal mining machine

Abstract

The embodiment of the invention provides a cutting head device and a coal mining machine, and belongs to the technical field of mining equipment. The cutting head device comprises a machine body, at least two machine arms and at least two cutting heads, the at least two machine arms are sequentially arranged at intervals in the vertical direction, and the first end of each machine arm is connected with the front end of the machine body in a swinging mode so that the second end of each machine arm can swing in the vertical plane; and the at least two cutting heads are connected to the second ends of the machine arms correspondingly, and the distance between each cutting head and the machine body is gradually reduced in the vertical downward direction. According to the embodiment of the invention, the mining efficiency is improved by adding the machine arms and the cutting heads, and steps can be formed on a coal seam in the coal mining process by adjusting the distance between each cutting head and the machine body, so that the height difference when damaged coal falls down is reduced, the splashing distance of the coal is reduced, and the coal is easier to collect.

Description

Technical Field

[0001] The present application relates to the technical field of mining equipment, and in particular to a cutting head device and a coal mining machine. Background Art

[0002] The rolling-cutting continuous coal mining machine has a cutting mechanism installed on the front side of the frame body, and the coal located in front of the coal mining machine is mined through the cutting mechanism.

[0003] However, the coal mined by the existing coal mining machine is not effectively controlled, and the coal will splash far away after falling. The loading mechanism of the coal mining machine itself cannot collect the coal that has splashed far away, and other manpower is needed to assist in collecting the coal, resulting in the actual use effect of the rolling cutting continuous mining machine is not ideal. Summary of the invention

[0004] The present application provides a cutting head device and a coal mining machine, which are used to solve the problem that the coal mined by the existing coal mining machine splashes far away and cannot be completely collected by the loading mechanism of the coal mining machine itself.

[0005] On the one hand, the present application provides a cutting head device, comprising: a machine body, at least two arms and at least two cutting heads, the at least two arms being arranged in sequence and spaced apart in the vertical direction, the first end of each arm being swingably connected to the front end of the machine body so that the second end of each arm can swing in a vertical plane; at least two cutting heads are respectively connected to the second end of each arm, and the distance from each cutting head to the machine body gradually decreases in the vertical downward direction.

[0006] Optionally, among two adjacent cutting heads, the lowest point of the cutting head located above and the highest point of the cutting head located below are located in 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 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 both spirally arranged with spiral blades, and the spiral direction of the spiral blades on the first roller is opposite to the spiral direction of the spiral blades on the second roller.

[0008] Optionally, there are multiple first rollers and / or multiple second rollers, and multiple first rollers are disposed adjacent to each other and / or multiple second rollers are disposed adjacent to each other.

[0009] Optionally, the spiral blade includes a cutting seat and a plurality of cutting teeth, the cutting seat is spirally fixed to the corresponding surface of the first roller or the second roller, and the plurality of cutting teeth are fixed on the cutting seat at even intervals along the extension direction of the cutting seat.

[0010] Optionally, the cutting head also includes a coal breaking assembly, which is installed on the frame and is located between the first roller and the second roller, and / or the coal breaking assembly is located between two adjacent first rollers, and / or the coal breaking assembly is located between two adjacent second rollers.

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

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

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

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

[0015] The beneficial effect of the present application is that the cutting head device and coal mining machine provided by the present application, by setting at least two machine arms and installing a cutting head on each machine arm, can jointly mine coal through multiple cutting heads during coal mining, thereby improving the coal mining efficiency. At the same time, in the vertical downward direction, by gradually reducing the distance between each cutting head and the machine body, at least one step surface can be formed on each layer during the mining process of each layer, and the coal located on the step surface can first fall on the step surface and then fall from the step surface to the ground. In this way, by shortening the height difference of each fall of the coal, the splash distance of the coal is reduced, thereby making it easier to collect the coal. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 1 A schematic diagram of the side structure of a coal mining machine provided in an embodiment of the present application;

[0018] Figure 2 A schematic diagram of the structure of a cutting head device provided in an embodiment of the present application;

[0019] Figure 3 The first usage state of the cutting head device provided in the embodiment of the present application;

[0020] Figure 4 The second usage state of the cutting head device provided in the embodiment of the present application;

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

[0022] Figure 6 This is the fourth usage state of the cutting head device provided in the embodiment of the present application.

[0023] Reference numerals:

[0024] 100-machine body; 110-feeding mechanism;

[0025] 200-arm; 220-telescopic cylinder;

[0026] 300-cutting head; 310-frame; 320-first roller; 330-second roller; 340-spiral blade; 341-cutting seat; 342-cutting teeth; 350-coal breaking assembly; 351-coal breaking seat; 352-coal breaking teeth;

[0027] 500-negative pressure dust removal device;

[0028] 600 - Loading mechanism.

[0029] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0030] Here, exemplary embodiments are described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application.

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

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

[0033] In the related art, the coal mined by the existing coal mining machine is not effectively controlled, and the coal will splash far after falling, and other manpower is needed to assist in collecting the coal, resulting in the actual use effect of the rolling-cutting continuous mining machine is not ideal.

[0034] In view of this, a cutting head device provided in an embodiment of the present application is provided with at least two machine arms, and a cutting head is installed on each machine arm. When mining coal, multiple cutting heads can be used to mine coal together, thereby improving the efficiency of coal mining. At the same time, in the vertical downward direction, by gradually reducing the distance between each cutting head and the machine body, at least one step surface can be formed on each layer during the mining process of each layer, and the coal located on the step surface can first fall on the step surface, and then fall from the step surface to the ground. In this way, by shortening the height difference of each fall of the coal, the splash distance of the coal is reduced, so that the coal is easier to collect.

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

[0036] like Figures 1 to 6 As shown, an embodiment of the present application provides a cutting head 300 device, including a body 100, at least two arms and at least two cutting heads 300, at least two arms are arranged in sequence along the vertical direction, and the first end of each arm is swingably connected to the front end of the body 100 so that the second end of each arm can swing in a vertical plane; each cutting head 300 is respectively connected to the second end of each arm, and along the vertical downward direction, the distance between each cutting head 300 and the body 100 gradually decreases.

[0037] By adjusting the swing angle of each machine arm relative to the machine body 100, the height of the cutting head 300 can be adjusted, thereby adjusting the overall excavation height of the cutting head 300. By arranging the machine arms in sequence in the vertical direction, the cutting heads 300 connected to each machine arm are also arranged in sequence in the vertical direction. When multiple cutting heads 300 jointly excavate the coal seam, the excavation efficiency of the coal seam can be improved. On the other hand, by arranging the spacing between each cutting head 300 and the machine body 100 to gradually decrease in the vertical downward direction, the lower the height of the cutting head 300, the closer the distance to the machine body 100. In this way, when the cutting head 300 moves toward the direction of the ore layer to perform a downward cutting action (such as Figure 5 As shown in FIG. 1 , each cutting head 300 can form at least one step on the coal seam, so that when the cutting head 300 performs a bottom pulling action (such as Figure 6 As shown in the figure, the corresponding coal will be pulled back and moved, so that the upper coal will fall onto the steps layer by layer, and finally all the coal will fall onto the ground for unified collection. Since the formed steps shorten the height difference of the coal falling, the potential energy of the mined coal falling downward is reduced, and the distance of coal splashing is shortened, which makes the coal more concentrated after falling to the ground, and the coal is easier to be collected by the loading mechanism 600 on the coal mining machine, so there is no need to set up additional manpower to assist in collecting the coal.

[0038] In addition, since multiple cutting heads can work and mine coal at the same time during coal mining operations, the coal mining efficiency can be greatly improved, thereby improving the economic benefits of coal mining.

[0039] In some optional embodiments, of 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 located on the same horizontal plane.

[0040] This arrangement ensures that there is no gap between adjacent cutting heads 300 in the horizontal direction. When each cutting head 300 performs continuous excavation and synchronous operation on the coal seam, the integrity of the mine wall section can be ensured, greatly improving safety and production efficiency.

[0041] It should be noted that a telescopic cylinder 220 is connected between the machine body 100 and the machine arm 200, and the swing angle of the machine arm 200 is controlled by the telescopic cylinder 220, thereby controlling the lifting action (such as the upward swing of the cutting head 300) to be realized. Figure 3 ) and swinging downward to achieve a downward 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 arm, the first roller 320 and the second roller 330 are coaxially arranged and rotatably connected to the frame 310, and the surfaces of the first roller 320 and the second roller 330 are both spirally arranged with spiral blades 340, and 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 excavation process, the rotation of the first roller 320 and the second roller 330 will drive the corresponding spiral blades 340 to rotate. The coal formed after the spiral blades 340 cut the coal seam can move along the spiral direction of the spiral blades 340 under the rotation drive 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 falling on the first roller 320 and the second roller 330 can be driven by the corresponding spiral blades 340 to move toward the middle and gather together. In this way, the coal can be further concentrated and easier to collect.

[0044] In some optional embodiments, there are plural first rollers 320 and / or plural second rollers 330 , and the plural first rollers 320 are disposed adjacent to each other and / or the plural second rollers 330 are disposed adjacent to each other.

[0045] By adjusting the number of the first rollers 320 and the second rollers 330, the length of the cutting head 300 can be controlled, thereby adjusting the excavation width of the coal seam when the cutting head 300 excavates the coal seam. The same first rollers 320 or the same second rollers 330 are arranged adjacent to each other, so that the coal can be continuously transported.

[0046] For the specific structure of the spiral blade 340, Figure 2 As shown, in some optional embodiments, 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, and the plurality of cutting teeth 342 are fixed on the cutting seat 341 at even intervals along the extension direction of the cutting seat 341.

[0047] It can be understood that the cutting seat 341 is spirally shaped and is fixed on the corresponding first roller 320 and the second roller 330. The cutting seat 341 can guide the coal and also provide an installation basis 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. The coal can fall from the gap between the cutting teeth 342 to the corresponding first roller 320 or the second roller 330, and then be transported by the cutting seat 341.

[0048] The cutting seat 341 may include a plurality of cutting seat units, and the plurality of cutting seat units are adjacently connected and fixed to the corresponding first roller 320 and second roller 330 in sequence, so that the plurality of cutting units together form a spiral shape. Of course, in other embodiments, the cutting seat 341 may also directly adopt an integrally formed spiral structure.

[0049] Optionally, the cutting tooth 342 is detachably connected to the cutting seat 341. 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 also includes a coal breaking assembly 350, which is installed on the frame 310, and 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.

[0051] The coal breaking assembly 350 can be arranged to break the coal seam with greater hardness, and the coal breaking assembly 350 is arranged 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. The large pieces of coal broken by the coal breaking assembly 350 can fall onto the first roller 320 or the second roller 330 from both sides, and then be cut into small pieces of coal by the spiral blades 340 on the first roller 320 or the second roller 330.

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

[0053] For the specific structure of the coal breaking assembly 350, 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 the coal breaking seat 351 is coaxially arranged with the first roller 320 , and 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 broken by the coal breaking teeth 352 distributed on the coal breaking seat 351. Moreover, after the coal breaking teeth 352 are seriously worn, the coal breaking teeth 352 can be replaced by disassembling the coal breaking teeth 352.

[0055] In order to reduce the dust generated during coal mining. Figure 2 As shown, in some optional embodiments, two negative pressure dust removal devices 500 are spaced apart on the machine body 100 , each machine arm is located between the two negative pressure dust removal devices 500 , and 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 on 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 the coal mining process will be sucked into the negative pressure port, reducing environmental pollution and creating a green mine.

[0057] In some optional embodiments, such as Figure 2 As shown, each arm 200 is connected to the machine body 100 with a feeding mechanism 110, which is used to drive 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 propulsion action (such as Figure 4 ) and move backward (backward) to achieve the bottom pull action (as shown) Figure 6 as shown).

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

[0059] The coal material cut by the cutting head 300 can be transported backwards through the loading mechanism 600 .

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

[0061] The present application also provides a cutting process, which can be implemented by the above-mentioned cutting head device or coal mining machine, and the cutting process includes the following steps:

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

[0063] S200: placing each cutting head 300 on a corresponding step surface;

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

[0065] S400: Controlling 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 direction of the coal seam, and repeat steps S200-S500.

[0067] It can be understood that the upward swing of the arm 200 in the coal mining machine is to carry out Figure 3 The lifting action shown in the figure, the feed mechanism 110 in the coal mining machine moves forward to perform Figure 4 The thrust action shown in the figure, the arm 200 of the coal mining machine swings downward to carry out Figure 5 As shown in the lower cutting action, the feed mechanism 110 in the coal mining machine moves backward to perform Figure 6 The depth refers to the length of the cutting head 300 that penetrates into the coal seam. Since the distances between the cutting heads 300 and the machine body 100 are different, after the pushing action, the length of the cutting head 300 that penetrates into the coal seam is also different, and different step surfaces can be formed on the coal seam. The step surfaces can support the cutting head 300. 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, thereby saving energy, increasing efficiency, and expanding production capacity. When the arm 200 drives the cutting head device to retreat and perform the bottom pulling action, the arm 200 will push the cut coal to move away from the coal seam, so that the coal leaves the step where it is and falls down to the next step or the ground (the coal on the last step will fall on the ground). By forming multiple steps, the height difference of the coal when it falls can be reduced, thereby reducing the potential energy of the coal when it falls, reducing the distance of the coal splashing, and allowing the coal to be collected and transported by the loading mechanism 600 of the coal mining machine itself.

[0068] In some optional embodiments, for an open-pit coal seam, the height is limited. Then, before performing step S100, the following steps are required: control the machine arm 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] In this way, after the cutting head 300 moves forward a preset distance in the direction of the coal seam, the cutting head 300 at the top is located at the top of the coal seam. At this time, the cutting head 300 at the top can be placed on the top surface of the open-air coal seam so that the cutting head device can cut the entire coal seam.

[0070] Those skilled in the art will readily conceive of other embodiments of the present application after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses or adaptations of the present application that follow the general principles of the present application and include common knowledge or customary technical means in the art that are not disclosed in this application.

[0071] It should be understood that the present application is not limited to the exact construction that has been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof.

Claims

1. A cutting head device, characterized in that: include; Body (100); At least two machine arms (200) are arranged in sequence and spaced apart in a vertical direction, and a first end of each of the machine arms (200) is swingably connected to a front end of the machine body (100), so that a second end of each of the machine arms (200) can swing in a vertical plane; At least two cutting heads (300) are respectively connected to the second end of each of the machine arms (200), and the distance between each of the cutting heads (300) and the machine body (100) gradually decreases in the vertical downward direction.

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

3. The cutting head device according to claim 1, characterized in that: The cutting head (300) comprises 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 (200); the first roller (320) and the second roller (330) are coaxially arranged and rotatably connected to the frame (310); spiral blades (340) are spirally arranged on the surfaces of the first roller (320) and the second roller (330); 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).

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

5. The cutting head device according to claim 3, characterized in that: The spiral blade (340) comprises 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); and the plurality of cutting teeth (342) are fixed to the cutting seat (341) at even intervals along the extension direction of the cutting seat (341).

6. The cutting head device according to claim 3, characterized in that: The cutting head (300) further comprises a coal-breaking assembly (350), wherein the coal-breaking assembly (350) is mounted on the frame (310), and 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).

7. The cutting head device according to claim 6, characterized in that: The coal breaking assembly (350) comprises 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 the coal breaking seat (351) is coaxially arranged with the first roller (320); and the plurality of coal breaking teeth (352) are distributed and fixed on the surface of the coal breaking seat (351).

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

9. The cutting head device according to claim 1, characterized in that: A feeding mechanism (110) is respectively connected between each of the machine arms (200) and the machine body (100), and the feeding mechanism (110) is used to drive the machine arms (200) to move horizontally.

10. A coal mining machine, characterized in that: It comprises a cutting head device and a loading mechanism (600) as described in any one of claims 1 to 9, wherein the loading mechanism (600) is installed on the machine body (100), and the loading mechanism (600) is used to transport coal cut by the cutting head (300).

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