Thin seam embedded cutting device and working method thereof

Abstract

A kind of thin coal seam embedded cutting device and its working method belong to the field of cutting device for coal winning machine.The side surface of rocker arm is fixedly connected with connecting cylinder, the side surface of connecting cylinder is connected with roller through bearing, the other side of roller is fixedly connected with rotary disc;Spiral plate is fixedly connected on the outer cylindrical surface of roller, and a plurality of through holes are provided on the spiral plate, the axis of through hole is parallel to the axis of roller;One end of rotating shaft is inserted on rotary disc through bearing, the other end of rotating shaft passes through corresponding through hole and is inserted on the side surface of rocker arm through bearing, a plurality of gears are keyed on rotating shaft;The outer cylindrical surface of connecting cylinder is provided with gear slot, one gear on each rotating shaft is engaged with gear slot on connecting cylinder;Breaking device is fixedly connected on the outer cylindrical surface of rotary disc and spiral plate.The present application not only can prevent coal block from being stuck in the gap between spiral plate, prevent difficult to clean, but also can ensure that the heat generated in the working process of cutting pick is effectively dissipated, avoid affecting the service life of cutting pick.

Description

Technical Field

[0001] This invention relates to an embedded cutting device for thin coal seams and its working method, belonging to the field of cutting devices for coal mining machines. Background Technology

[0002] With the upgrading of coal mining machines, large coal mines only need a few workers to operate the machines to ensure output. However, coal blocks in currently used coal mining machines tend to get stuck in the gaps between the spiral plates, and the cutting teeth cannot effectively dissipate heat during operation, which can easily affect their service life. Therefore, it is necessary to improve them. Summary of the Invention

[0003] The purpose of this invention is to solve the above-mentioned problems existing in the background art and to provide a thin coal seam embedded cutting device and its working method.

[0004] The present invention achieves the above objectives by adopting the following technical solution:

[0005] A thin coal seam embedded cutting device includes a rocker arm assembly and multiple crushing devices. The rocker arm assembly includes a rocker arm, a connecting cylinder, a drum, a turntable, a spiral plate, multiple rotating shafts, and multiple gears. The connecting cylinder is fixedly connected to the side of the rocker arm, and the drum is connected to the side of the connecting cylinder via bearings. The turntable is fixedly connected to the other side of the drum. The spiral plate is fixedly connected to the outer circumferential surface of the drum, and the spiral plate has multiple through holes, the axis of which is parallel to the axis of the drum. One end of the rotating shaft is inserted into the turntable via a bearing, and the other end of the rotating shaft passes through the corresponding through hole and is inserted into the side of the rocker arm via a bearing. Multiple gears are keyed to the rotating shaft. The outer circumferential surface of the connecting cylinder has toothed grooves, and one gear on each rotating shaft meshes with the toothed groove on the connecting cylinder. The crushing devices are fixedly connected to the outer circumferential surfaces of the turntable and the spiral plate.

[0006] A method for operating a thin coal seam embedded cutting device, the method comprising the following steps:

[0007] Step 1: Start the power system inside the rocker arm to drive the roller and turntable to rotate;

[0008] Step 2: The crushing devices on the drum and turntable crush the coal seam.

[0009] Compared with the prior art, the beneficial effects of the present invention are: the present invention can not only prevent coal blocks from getting stuck in the gaps between the spiral plates, making them difficult to clean, but also ensure that the heat generated during the operation of the cutting teeth is effectively dissipated, thus avoiding affecting the service life of the cutting teeth. Attached Figure Description

[0010] Figure 1 This is a front view of a thin coal seam embedded cutting device according to the present invention;

[0011] Figure 2 This is a front view of the rocker arm of a thin coal seam embedded cutting device according to the present invention;

[0012] Figure 3 This is a side view of the gear position in a thin coal seam embedded cutting device according to the present invention;

[0013] Figure 4 This is a schematic diagram of the connection structure of the drum and connecting cylinder of a thin coal seam embedded cutting device according to the present invention;

[0014] Figure 5 yes Figure 1 A magnified structural diagram of A in the middle;

[0015] Figure 6 This is a cross-sectional view of the cutting teeth of a thin coal seam embedded cutting device according to the present invention;

[0016] Figure 7 This is a cross-sectional view of the base of a thin coal seam embedded cutting device according to the present invention;

[0017] Figure 8 This is a cross-sectional view of an auxiliary device of a thin coal seam embedded cutting device according to the present invention;

[0018] Figure 9 This is a front view of the cutting teeth of a thin coal seam embedded cutting device according to the present invention. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the invention, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] Specific implementation method one: as follows Figure 1-9As shown, this embodiment describes a thin coal seam embedded cutting device, including a rocker arm assembly 1 and multiple crushing devices 2; the rocker arm assembly 1 includes a rocker arm 11, a connecting cylinder 12, a drum 13, a turntable 14, a spiral plate 15, multiple rotating shafts 16, and multiple gears 17; the connecting cylinder 12 is fixedly connected to the side of the rocker arm 11, the drum 13 is connected to the side of the connecting cylinder 12 through bearings, and the turntable 14 is fixedly connected to the other side of the drum 13; the spiral plate 15 is fixedly connected to the outer circumference of the drum 13. The spiral plate 15 has multiple through holes, the axis of which is parallel to the axis of the drum 13; one end of the rotating shaft 16 is inserted into the turntable 14 through a bearing, and the other end of the rotating shaft 16 passes through the corresponding through hole and is inserted into the side of the rocker arm 11 through a bearing; multiple gears 17 are keyed to the rotating shaft 16; the outer surface of the connecting cylinder 12 is provided with tooth grooves, and one gear 17 on each rotating shaft 16 meshes with the tooth grooves on the connecting cylinder 12; the crushing device 2 is fixedly connected to the outer surface of the turntable 14 and the spiral plate 15.

[0021] Specific implementation method two: such as Figure 1-9 As shown, this embodiment is a further explanation of the first specific embodiment, and each of the crushing devices 2 is inclined toward the rotation direction of the drum 13.

[0022] Specific implementation method three: such as Figure 1-9 As shown, this embodiment is a further explanation of the first specific embodiment. Each of the crushing devices 2 includes a base 21, an auxiliary device 22 and a cutting tooth 23; the base 21 is provided with the cutting tooth 23 inside, and the auxiliary device 22 is provided around the cutting tooth 23.

[0023] Specific implementation method four: such as Figure 1-9 As shown, this embodiment is a further explanation of specific embodiment one. The base 21 includes an outer shell 211, the inner cavity of the outer shell 211 is provided with a cavity 218, and the top of the outer shell 211 is provided with a through hole 215 communicating with the cavity 218. A fixing ring 219 is fixedly connected to the bottom surface of the cavity 218. A support seat 216 is provided inside the fixing ring 219. A spring 2110 is fixedly connected to the lower end of the support seat 216, and a plurality of heat dissipation holes 217 are provided on the side of the support seat 216. The side of the outer shell 211 is also provided with a ventilation hole 212 communicating with the cavity 218.

[0024] The cutting tooth 23 includes a cutting tooth body 231 and a conical rubber pad 232; the cutting tooth body 231 is fixedly connected to the inside of the bearing seat 216 and passes through the through hole 215; the conical rubber pad 232 is in contact with the inner wall of the through hole 215.

[0025] Specific implementation method five: such as Figure 1-9As shown, this embodiment is a further explanation of the first specific embodiment. The bottom surface of the cavity 218 of the outer shell 211 is provided with two U-shaped grooves 213. One end of the U-shaped groove 213 is provided inside the fixing ring 219, and the other end of the U-shaped groove 213 is provided outside the fixing ring 219.

[0026] The auxiliary device 22 includes an annular block 222; the annular block 222 has a spiral hole 226 inside, and a connecting hole I 223 and a connecting hole II 227 are respectively provided at the bottom and top of the annular block 222. The connecting holes I 223 and II 227 are connected to the spiral hole 226. The bottom ends of the annular block 222 and the bearing seat 216 are both fixedly connected to a connecting rod 224. The lower end of the connecting rod 224 is fixedly connected to a rubber plug 225, and the rubber plug 225 slides in fit with the corresponding U-shaped groove 213.

[0027] Specific implementation method six: such as Figure 1-9 As shown, this embodiment is a further explanation of the first specific embodiment. The ventilation hole 212 on the side of the outer shell 211 is provided at the bottom of the side of the cavity 218.

[0028] Specific implementation method seven: such as Figure 1-9 As shown, this embodiment is a further explanation of the first specific embodiment. The top end of the annular block 222 is fixedly connected with a plurality of auxiliary cutting teeth 221, and the top end of the outer shell 211 is also provided with a plurality of vertical holes 214, and each auxiliary cutting tooth 221 slides in cooperation with the corresponding vertical hole 214.

[0029] Specific implementation method eight: such as Figure 1-9 As shown, this embodiment describes a working method for a thin coal seam embedded cutting device, the working method including the following steps:

[0030] Step 1: Start the power system inside the rocker arm 11 to drive the roller 13 and turntable 14 to rotate;

[0031] Step 2: The crushing device 2 on the drum 13 and turntable 14 crushes the coal seam.

[0032] The working principle of this invention is as follows: When using this device, the power system inside the rocker arm 11 is started. The power system drives the transmission system (gear transmission or chain transmission) to move. The transmission system is connected to the drum 13, which in turn drives the drum 13 and the turntable 14 to rotate. The drum 13 also drives the spiral plate 15 to rotate. The crushing device 2 on the spiral plate 15 and the turntable 14 moves together. The coal seam is crushed by the cutting teeth 231 and auxiliary cutting teeth 221 on the crushing device 2. The coal blocks produced after crushing fall into the gap of the spiral plate 15. As the drum 13 rotates, most of the coal blocks fall onto the conveyor belt under the action of gravity. Since the drum 13 rotates relative to the connecting cylinder 12, the drum 13 drives the shaft 16 and the gear 17 to rotate together. The gear 17 meshes with the tooth groove on the connecting cylinder 12. Therefore, the gear 17 also rotates around the shaft 16. During the rotation of the gear 17, it can push the coal blocks into the gap of the spiral plate 15 to prevent coal blocks from getting stuck in the gap of the spiral plate 15.

[0033] During the rotation of the drum 13, the heat generated by the cutting teeth 231 during operation is dissipated into the cavity 218 through the heat dissipation holes 217 on the bearing seat 216. When the cutting teeth 231 on the corresponding crushing devices 2 on the outer surfaces of the turntable 14 and the spiral plate 15 come into contact with the coal seam, they are resisted by the coal seam and move towards the seat 21. This causes the bearing seat 216 to compress the spring 2110 and move towards the bottom of the fixed ring 219. The movement of the bearing seat 216 also drives the connecting rod 224 at its lower end. As the rubber plug 225 moves downward, the U-shaped groove 213, filled with oil, pushes the oil to move the rubber plug 225 at the lower end of the bearing seat 216 downward, causing the other rubber plug 225 on the other side of the U-shaped groove 213 to move upward. This, in turn, causes another connecting rod 224 and the annular block 222 to move upward. At the same time, the downward movement of the cutting tooth 231 also causes the conical rubber pad 232 to move downward. The annular block 222 and the conical rubber plug 232 move relative to each other, rapidly compressing the air in the cavity 218, creating a pressure difference, and causing the air in the cavity 218 to... Air moves through the connecting holes I 223, II 227, and spiral hole 226 inside the annular block 222 to the lower end of the annular block 222, and flows through the ventilation hole 212 to the outer end of the base 21. Simultaneously, as the annular block 222 moves upward, it also drives the auxiliary cutting tooth 221 upward, exposing it at the upper end of the base 21, until both the auxiliary cutting tooth 221 and the cutting tooth 231 simultaneously contact the coal seam. With the power output of the power system, the auxiliary cutting tooth 221 and... The cutting tooth 231 crushes the coal seam. Since the auxiliary cutting tooth 221 is arranged around the cutting tooth 231, the space between the auxiliary cutting tooth 221 and the cutting tooth 231 is significantly smaller than the space on the side of the cutting tooth 231 when the auxiliary cutting tooth 221 is not exposed outside the seat 21. Therefore, only a small number of small coal pieces can move into the space between the auxiliary cutting tooth 221 and the cutting tooth 231, avoiding a large number of coal pieces from contacting the side of the cutting tooth 231, thereby reducing the probability of uneven wear of the cutting tooth 231 and ensuring the service life of the cutting tooth 231.

[0034] When the seat 21 rotates with the turntable 14 and the spiral plate 15 to the disengaged position, the bearing seat 216 and the cutting tooth 231 move upward under the action of the spring 2110. This, in turn, drives the annular block 222 to move downward through the connecting rod 224 and the rubber plug 225. The conical rubber pad 232 also moves upward with the cutting tooth 231, causing the space at the upper end of the annular block 222 in the cavity 218 to expand. This draws in outside air through the connecting hole I 223, connecting hole II 227, and spiral hole 226, reducing the heat in the space at the upper end of the annular block 222 in the cavity 218, thereby reducing the temperature of the cutting tooth 231 and ensuring its service life. At the same time, since the annular block 222 is fitted on the fixed ring 219, dust can be effectively blocked at the lower end of the annular block 222 and inside the spiral hole 227 during the intake and exhaust of the ventilation hole 212. This prevents a large amount of dust from entering the upper end of the annular block 222 and blocking the heat dissipation hole 217, thus affecting the heat dissipation performance.

[0035] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of the equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A thin coal seam embedded cutting device, characterized in that: The device includes a rocker arm assembly (1) and multiple crushing devices (2); the rocker arm assembly (1) includes a rocker arm (11), a connecting cylinder (12), a drum (13), a turntable (14), a spiral plate (15), multiple rotating shafts (16), and multiple gears (17); the connecting cylinder (12) is fixedly connected to the side of the rocker arm (11), the drum (13) is connected to the side of the connecting cylinder (12) through a bearing, and the turntable (14) is fixedly connected to the other side of the drum (13); the spiral plate (15) is fixedly connected to the outer circumference of the drum (13), and the spiral plate (15) is... Multiple through holes are provided, and the axis of the through holes is parallel to the axis of the drum (13); one end of the rotating shaft (16) is inserted into the turntable (14) through a bearing, and the other end of the rotating shaft (16) passes through the corresponding through hole and is inserted into the side of the rocker arm (11) through a bearing. Multiple gears (17) are keyed on the rotating shaft (16); the outer circle surface of the connecting cylinder (12) is provided with a tooth groove, and one gear (17) on each rotating shaft (16) meshes with the tooth groove on the connecting cylinder (12); the crushing device (2) is fixedly connected to the outer circle surface of the turntable (14) and the spiral plate (15).

2. The thin coal seam embedded cutting device according to claim 1, characterized in that: Each of the crushing devices (2) is tilted toward the rotation direction of the drum (13).

3. The thin coal seam embedded cutting device according to claim 2, characterized in that: Each of the crushing devices (2) includes a base (21), an auxiliary device (22) and a cutting tooth (23); the base (21) is provided with the cutting tooth (23) inside, and the auxiliary device (22) is provided around the cutting tooth (23).

4. The thin coal seam embedded cutting device according to claim 3, characterized in that: The base (21) includes an outer shell (211), the interior of which is provided with a cavity (218), and the top of the outer shell (211) is provided with a through hole (215) communicating with the cavity (218). A fixing ring (219) is fixedly connected to the bottom surface of the cavity (218), and a support seat (216) is provided inside the fixing ring (219). A spring (2110) is fixedly connected to the lower end of the support seat (216), and multiple heat dissipation holes (217) are provided on the side of the support seat (216). The side of the outer shell (211) is also provided with a ventilation hole (212) communicating with the cavity (218). The cutting tooth (23) includes a cutting tooth body (231) and a conical rubber pad (232); the cutting tooth body (231) is fixedly connected to the inside of the bearing seat (216), and the cutting tooth body (231) passes through the perforation (215); the conical rubber pad (232) contacts the inner wall of the perforation (215).

5. A thin coal seam embedded cutting device according to claim 4, characterized in that: The cavity (218) of the outer shell (211) is provided with two U-shaped grooves (213) on the bottom surface. One end of the U-shaped groove (213) is located inside the fixing ring (219), and the other end of the U-shaped groove (213) is located outside the fixing ring (219). The auxiliary device (22) includes an annular block (222); the annular block (222) has a spiral hole (226) inside, and a connecting hole I (223) and a connecting hole II (227) are respectively provided at the bottom and top of the annular block (222). The connecting hole I (223) and the connecting hole II (227) are connected to the spiral hole (226). The bottom ends of the annular block (222) and the bearing seat (216) are both fixedly connected to a connecting rod (224). The lower end of the connecting rod (224) is fixedly connected to a rubber plug (225). The rubber plug (225) slides in cooperation with the corresponding U-shaped groove (213).

6. The thin coal seam embedded cutting device according to claim 5, characterized in that: The ventilation holes (212) on the side of the outer shell (211) are located at the bottom of the side of the cavity (218).

7. A thin coal seam embedded cutting device according to claim 6, characterized in that: The top of the annular block (222) is fixedly connected with a plurality of auxiliary cutting teeth (221), and the top of the outer shell (211) is also provided with a plurality of vertical holes (214), each auxiliary cutting tooth (221) slidingly engaging with the corresponding vertical hole (214).

8. The working method of the thin coal seam embedded cutting device according to claim 7, characterized in that: The working method includes the following steps: Step 1: Start the power system inside the rocker arm (11) to drive the roller (13) and turntable (14) to rotate; Step 2: The crushing device (2) on the drum (13) and turntable (14) performs crushing operation on the coal seam.

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