Intelligent coal mining machine for coal mine

Abstract

The invention is applicable to the technical field of coal mining machines, and provides an intelligent coal mine coal mining machine which comprises a driving arm and further comprises a coal mining roller, a driving shaft is mounted in the coal mining roller, and a plurality of mounting holes are annularly formed in the side wall of the coal mining roller; the crushing module comprises two groups of crushing units, each crushing unit comprises a mounting seat, one mounting seat is arranged in each mounting hole, a plurality of cutting tools are mounted at one end, far away from the driving shaft, of each mounting seat at equal intervals, and two groups of adjusting units are further arranged in the coal mining roller; and the filtering unit is mounted on the side wall of the coal mining roller. According to the device, the mode that the two crushing units work alternately is adopted, the temperature of the crushing module after long-time work can be reduced, dust generated in the coal mining process can be attached to a coal mining roller, dust overflowing can be prevented, and the air quality of a working area is effectively improved.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mining machines, and in particular relates to an intelligent coal mining machine. Background Art

[0002] Coal mining machine is a kind of mechanical equipment used in coal mining, which can automatically cut and dig coal seams. Coal mining machine plays a vital role in modern coal mining production, greatly improving the efficiency and safety of coal mining.

[0003] Coal mining machines are generally composed of multiple parts such as cutting mechanism, walking mechanism and loading mechanism. Among them, the cutting mechanism is generally composed of a cutting head and a cutting arm. The cutting head has multiple carbide cutters that can rotate quickly to cut the coal seam. Since the cutting head will continue to contact the coal mine and rotate at high speed during the entire coal mining process, it will inevitably cause the cutting head to generate a high temperature. In addition, due to the lack of an effective dust collection device, a large amount of dust will be generated during the coal mining process, resulting in a harsh working environment and not conducive to the normal work of the operator. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide an intelligent coal mining machine, aiming to solve the problems raised in the above-mentioned background technology.

[0005] The embodiment of the present invention is implemented as follows: an intelligent coal mining machine includes a coal mining machine body, a driving arm is provided on the coal mining machine body, and further includes: A coal mining drum, wherein a driving shaft is installed in the coal mining drum, and the driving shaft is in transmission connection with a driving arm, a plurality of mounting holes are arranged in a circle on the side wall of the coal mining drum, a plurality of exhaust holes are opened on a side of the coal mining drum close to the driving arm, and an exhaust assembly for forming a negative pressure at the exhaust hole is also provided on the driving arm; A crushing module, wherein the crushing module comprises two groups of crushing units, wherein the crushing units comprise a plurality of mounting seats arranged in a ring array around the driving shaft, and the mounting seats in the two groups of crushing units are arranged in an interlaced manner, and a mounting seat is correspondingly arranged in each mounting hole, and the mounting seat is slidably installed in the mounting hole along the radial direction of the driving shaft, and a plurality of cutting tools are equidistantly installed at one end of the mounting seat away from the driving shaft, and two groups of adjusting units are further arranged inside the coal mining drum, and the two groups of adjusting units are respectively arranged at the two ends of the coal mining drum and are respectively connected to a group of crushing units, and the adjusting unit is used to drive each mounting seat in a group of crushing units to synchronously move linearly along the radial direction of the driving shaft; The filter unit is installed on the side wall of the coal mining drum, and when the mounting seat in each mounting hole is retracted into the interior of the coal mining drum, the filter unit will cover the mounting hole.

[0006] According to a further technical solution, the exhaust assembly includes a plurality of exhaust ducts opened on the drive arm, and the exhaust ducts are opened at areas on the drive arm corresponding to the exhaust holes, and an exhaust fan is installed in each of the exhaust ducts.

[0007] A further technical solution is that a dust collecting pipe is arranged between the end of the coal mining drum and the driving arm, and one end of the dust collecting pipe close to the coal mining drum covers each exhaust hole inside, and the other end of the dust collecting pipe covers each exhaust fan inside, and the dust collecting pipe is connected to the end of the coal mining drum through a bearing structure.

[0008] A further technical solution is that the adjustment unit includes a sliding ring sleeved on the driving shaft, and the coal mining drum is also provided with a control unit for driving the sliding ring to move linearly along the axial direction of the driving shaft, a plurality of connecting rods are arranged in a ring on the sliding ring, and the number of the connecting rods is the same as the number of mounting seats in a group of crushing units, each of the sliding rings is hinged with a hinged rod, and one end of the hinged rod away from the connecting rod is hinged to the inner side of the corresponding mounting seat.

[0009] According to a further technical solution, the control unit includes an electromagnet installed at the end of the coal mining drum, and a side of the sliding ring close to the electromagnet is connected to the electromagnet via a supporting spring.

[0010] A further technical solution is that the filtering unit includes an isolation mesh plate, which is slidably installed on the coal mining drum along the circumference of the coal mining drum, and an isolation mesh plate is correspondingly arranged at each of the installation holes, and the isolation mesh plate is connected to the coal mining drum through a plurality of return springs, and an inclined surface is arranged on the inner side of one end of the isolation mesh plate away from the return spring.

[0011] According to a further technical solution, the driving arm can be detachably mounted on the coal mining machine body.

[0012] An intelligent coal mining machine provided by an embodiment of the present invention, when working, drives the driving shaft to rotate through the driving arm, thereby driving the coal mining drum to rotate as a whole, and the coal mining drum can drive the crushing unit thereon to rotate synchronously, so as to perform coal mining through the cutting tool on the mounting seat. And in the specific working process, the cutting tool on the crushing unit will only contact the coal mine when it extends to the outside of the coal mining drum. By controlling the two groups of crushing units to extend alternately, one group of crushing units is always kept in a working state, and the other group of crushing units can be cooled inside the coal mining drum. Specifically, the corresponding electromagnet is controlled to be powered on or off. When the electromagnet is powered off, the elastic force of the supporting spring will push the sliding ring to move along the axial direction of the driving shaft, and the sliding ring can drive the various connecting rods thereon to move synchronously. The connecting rod can drive the corresponding mounting seat to move along the radial direction of the driving shaft through the hinged rod set thereon, so that the outer sides of each mounting seat in the same group of crushing units are simultaneously extended to the outside of the coal mining drum. When the electromagnet is energized, the magnetic attraction generated by the electromagnet will cause the sliding ring to move toward the side close to the electromagnet, so that the corresponding mounting seat is pulled back into the coal mining drum through the adjustment unit. In addition, during the operation of the coal mining drum, the exhaust fan is used to exhaust air toward the side away from the coal mining drum, thereby forming a negative pressure at the exhaust hole, so that the air inside the coal mining drum can be discharged, and the air outside the coal mining drum can enter the coal mining drum from the corresponding mounting hole. On the one hand, the dust generated during the coal mining process can be adsorbed on the coal mining drum to reduce dust; on the other hand, by accelerating the air circulation inside the coal mining drum, the crushing unit inside the coal mining drum can be cooled, and the temperature of the crushing unit can be accelerated to decrease. And when the mounting seat in the mounting hole is retracted into the coal mining drum, the elastic force of the reset spring will cause the corresponding isolation mesh plate to cover the mounting hole as a whole, preventing the dust generated during coal mining from entering the coal mining drum through the mounting hole. The device uses two groups of crushing units to work alternately, which can reduce the temperature of the crushing module after long-term operation, and can make the dust generated during coal mining adhere to the coal mining drum, preventing dust from overflowing and effectively improving the air quality in the working area. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of the structure of an intelligent coal mining machine provided by an embodiment of the present invention; Figure 2 A schematic diagram of the structure of an intelligent coal mining machine provided by an embodiment of the present invention when two groups of crushing units are in working state; Figure 3 A schematic diagram of the structure of a group of crushing units in an intelligent coal mining machine provided by an embodiment of the present invention when they are in working state; Figure 4A schematic diagram of the installation positions of two groups of crushing units in an intelligent coal mining machine provided by an embodiment of the present invention; Figure 5 A schematic diagram of the structure of the cooperation between the crushing unit and the regulating unit 4 in an intelligent coal mining machine provided by an embodiment of the present invention; Figure 6 A schematic diagram of the installation position of a sliding ring in an intelligent coal mining machine provided by an embodiment of the present invention; Figure 7 A schematic diagram of the partial structure of a driving arm in an intelligent coal mining machine provided by an embodiment of the present invention; Figure 8 A schematic diagram of the structure of a coal mining drum in an intelligent coal mining machine provided by an embodiment of the present invention; Fig. 9 A schematic diagram of the partial structure of a coal mining drum in an intelligent coal mining machine provided by an embodiment of the present invention; Fig.10 for Fig. 9 A in the enlarged view; Fig.11 A schematic diagram of a structure in which mounting seats of two groups of crushing units in an intelligent coal mining machine provided by an embodiment of the present invention are staggered; Fig.12 A schematic structural diagram of two groups of crushing units in an intelligent coal mining machine provided in an embodiment of the present invention after being split axially along the drive shaft.

[0014] In the accompanying drawings: driving arm 1; exhaust duct 11; exhaust fan 12; coal mining drum 2; mounting hole 21; exhaust hole 22; driving shaft 23; crushing unit 3; mounting seat 31; cutting tool 32; adjusting unit 4; sliding ring 41; connecting rod 42; hinged rod 43; control unit 5; electromagnet 51; supporting spring 52; filtering unit 6; isolation mesh plate 61; inclined surface 611; reset spring 62. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0016] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0017] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig.11 as well as Fig.12 As shown, an intelligent coal mining machine provided by an embodiment of the present invention includes a coal mining machine body, a driving arm 1 is provided on the coal mining machine body, and further includes: A coal mining drum 2, wherein a driving shaft 23 is installed in the coal mining drum 2, and the driving shaft 23 is in transmission connection with the driving arm 1, a plurality of mounting holes 21 are arranged in a circle on the side wall of the coal mining drum 2, a plurality of exhaust holes 22 are opened on a side of the coal mining drum 2 close to the driving arm 1, and an exhaust component for forming a negative pressure at the exhaust hole 22 is also provided on the driving arm 1; A crushing module, wherein the crushing module comprises two groups of crushing units 3, wherein the crushing units 3 comprise a plurality of mounting seats 31 arranged in a ring array along the periphery of the driving shaft 23, and the mounting seats 31 in the two groups of crushing units 3 are arranged alternately with each other, and a mounting seat 31 is correspondingly arranged in each of the mounting holes 21, and the mounting seats 31 are slidably installed in the mounting holes 21 along the radial direction of the driving shaft 23, and a plurality of cutting tools 32 are equidistantly installed at one end of the mounting seat 31 away from the driving shaft 23, and two groups of adjusting units 4 are further arranged inside the coal mining drum 2, wherein the two groups of adjusting units 4 are respectively arranged at the two ends of the coal mining drum 2, and are respectively connected to a group of crushing units 3, and the adjusting unit 4 is used to drive each mounting seat 31 in a group of crushing units 3 to synchronously move linearly along the radial direction of the driving shaft 23; The filter unit 6 is installed on the side wall of the coal mining drum 2 , and when the mounting seat 31 in each mounting hole 21 is retracted into the interior of the coal mining drum 2 , the filter unit 6 will cover the mounting hole 21 .

[0018] In the embodiment of the present invention, during operation, the driving arm 1 drives the driving shaft 23 to rotate, thereby driving the coal mining drum 2 to rotate as a whole, and the coal mining drum 2 can drive the crushing unit 3 thereon to rotate synchronously, so as to perform coal mining through the cutting tool 32 on the mounting seat 31. In the specific working process, the cutting tool 32 on the crushing unit 3 will only contact the coal mine when it extends to the outside of the coal mining drum 2. The adjusting unit 4 can drive each mounting seat 31 in the same group of crushing units 3 to slide synchronously along the mounting hole 21, so that the mounting seat 31 can be retracted into the coal mining drum 2 or extended to the outside of the coal mining drum 2. By controlling the two groups of crushing units 3 to extend alternately, one group of crushing units 3 is always kept in a working state, and the other group of crushing units 3 can be cooled inside the coal mining drum 2. Specifically, during the operation of the coal mining drum 2, a negative pressure can be formed at the exhaust hole 22 through the exhaust assembly, and the external air can be sucked into the coal mining drum 2 through the installation hole 21 corresponding to the crushing unit 3 in the non-working state, and the air in the coal mining drum 2 can be discharged through the exhaust hole 22. On the one hand, the dust generated during the coal mining process can be adsorbed on the coal mining drum 2 to reduce dust; on the other hand, by accelerating the air circulation inside the coal mining drum 2, the crushing unit 3 located inside the coal mining drum 2 can dissipate heat, thereby accelerating the temperature reduction of the crushing unit 3.

[0019] like Figure 1 and Figure 7 As shown, as a preferred embodiment of the present invention, the exhaust assembly includes a plurality of exhaust ducts 11 opened on the drive arm 1, and the exhaust ducts 11 are opened at the area on the drive arm 1 corresponding to the exhaust hole 22, and an exhaust fan 12 is installed in each of the exhaust ducts 11.

[0020] In the embodiment of the present invention, when in use, the exhaust fan 12 exhausts air to the side away from the coal mining drum 2, thereby forming a negative pressure at the exhaust hole 22, so that the air inside the coal mining drum 2 can be discharged, and the air outside the coal mining drum 2 can enter the inside of the coal mining drum 2 from each installation hole 21. On the one hand, the dust generated during the coal mining process can be adsorbed on the coal mining drum 2 to reduce dust; on the other hand, by accelerating the air circulation inside the coal mining drum 2, the crushing unit 3 inside the coal mining drum 2 can be cooled, and the temperature of the crushing unit 3 can be accelerated to decrease.

[0021] As a preferred embodiment of the present invention, a dust collecting pipe can be arranged between the end of the coal mining drum 2 and the driving arm 1, and one end of the dust collecting pipe close to the coal mining drum 2 covers each exhaust hole 22 therein, and the other end of the dust collecting pipe covers each exhaust fan 12 therein, and the dust collecting pipe can be connected to the end of the coal mining drum 2 through a bearing structure, so that the dust collecting pipe will not rotate synchronously with the coal mining drum 2 while ensuring the sealing of the connection between the two.

[0022] In the embodiment of the present invention, by providing a dust collecting pipe, the negative pressure formed by the exhaust assembly at the exhaust hole 22 is further enhanced, thereby improving the working effect of the exhaust assembly.

[0023] like Figure 4 , Figure 5 , Figure 6 as well as Fig.12 As shown, as a preferred embodiment of the present invention, the adjusting unit 4 includes a sliding ring 41 sleeved on the driving shaft 23, and the coal mining drum 2 is also provided with a control unit 5 for driving the sliding ring 41 to move linearly along the axial direction of the driving shaft 23, and a plurality of connecting rods 42 are arranged in a ring on the sliding ring 41, and the number of the connecting rods 42 is the same as the number of the mounting seats 31 in a group of crushing units 3, and each of the sliding rings 41 is hinged with a hinged rod 43, and one end of the hinged rod 43 away from the connecting rod 42 is hinged to the inner side of the corresponding mounting seat 31 (the side of the mounting seat 31 close to the driving shaft 23 is defined as the inner side).

[0024] In the embodiment of the present invention, the control unit 5 is also provided with two groups, which respectively control the sliding rings 41 in the two groups of adjustment units 4 to move. When in use, it is only necessary to control the corresponding sliding ring 41 to move along the axial direction of the drive shaft 23 through the control unit 5, and the sliding ring 41 can drive the connecting rods 42 thereon to move synchronously. The connecting rod 42 will drive the hinged rod 43 to move synchronously during the movement. Since the hinged rod 43 is connected to the mounting seat 31, and since the mounting seat 31 is installed in the mounting hole 21 along the radial direction of the drive shaft 23, the mounting seat 31 can only move along the radial direction of the drive shaft 23. Therefore, the axial movement of the connecting rod 42 along the drive shaft 23 will be converted into the radial movement of the mounting seat 31 along the drive shaft 23 through the hinged rod 43. Thereby, the outer sides of the mounting seats 31 in the same group of crushing units 3 are simultaneously extended to the outside of the coal mining drum 2, or the mounting seats 31 in the same group of crushing units 3 are simultaneously retracted into the coal mining drum 2. Thereby, the working state of the two groups of crushing units 3 is adjusted, and the two groups of crushing units 3 can be selected to perform coal mining work alternately.

[0025] like Figure 4 and Figure 5 As shown, as a preferred embodiment of the present invention, the control unit 5 includes an electromagnet 51 installed at the end of the coal mining drum 2, and the side of the sliding ring 41 close to the electromagnet 51 is connected to the electromagnet 51 through a supporting spring 52.

[0026] In the embodiment of the present invention, when the electromagnet 51 is powered off, the elastic force of the support spring 52 pushes the sliding ring 41 to move along the axial direction of the drive shaft 23, so that the corresponding mounting seat 31 extends out of the coal mining drum 2. When the electromagnet 51 is powered on, the magnetic attraction generated by the electromagnet 51 causes the sliding ring 41 to move toward the side close to the electromagnet 51, so that the corresponding mounting seat 31 is pulled back into the coal mining drum 2. When in use, it is only necessary to control the corresponding electromagnet 51 to be powered on or off to switch different groups of crushing units 3 to work.

[0027] As a preferred embodiment of the present invention, the control unit 5 may also use a hydraulic push rod, which can drive the corresponding sliding ring 41 to move along the axial direction of the driving shaft 23 simply by controlling the contraction of the hydraulic push rod. This setting is to avoid the situation where the supporting force of the aforementioned support spring 52 is insufficient in certain mining environments.

[0028] like Figure 2 , Figure 3 , Figure 8 , Fig. 9 and Fig.10 As shown, as a preferred embodiment of the present invention, the filtering unit 6 includes an isolation mesh plate 61, and the isolation mesh plate 61 is slidably installed on the coal mining drum 2 along the circumference of the coal mining drum 2, and an isolation mesh plate 61 is correspondingly provided at each of the mounting holes 21, and the isolation mesh plate 61 is connected to the coal mining drum 2 through a plurality of reset springs 62, and an inclined surface 611 is provided on the inner side of one end of the isolation mesh plate 61 away from the reset spring 62.

[0029] In the embodiment of the present invention, when the isolation mesh plate 61 is not subjected to external force, the elastic force of the return spring 62 will cause the isolation mesh plate 61 to cover the corresponding mounting hole 21 as a whole. The barrier effect of the isolation mesh plate 61 can prevent the dust generated during coal mining from entering the coal mining drum 2. When in use, when the mounting seat 31 in the mounting hole 21 is retracted into the coal mining drum 2, the elastic force of the return spring 62 will cause the corresponding isolation mesh plate 61 to cover the mounting hole 21 as a whole, preventing the dust generated during coal mining from entering the coal mining drum 2 through the mounting hole 21. In the process of the mounting seat 31 inside the coal mining drum 2 extending to the outside of the coal mining drum 2, the cutting tool 32 on the mounting seat 31 will abut against the inclined surface 611, and push the isolation mesh plate 61 to one side by cooperating with the inclined surface 611, so that the mounting seat 31 can smoothly extend from the mounting hole 21.

[0030] As a preferred embodiment of the present invention, the driving arm 1 can be detachably mounted on the coal mining machine body, thereby improving the adaptability of the driving arms 1 and 2, and the operator can quickly modify the existing coal mining machine, thereby reducing production and operation costs.

[0031] Working principle: When working, the driving arm 1 drives the driving shaft 23 to rotate, thereby driving the coal mining drum 2 to rotate as a whole, and the coal mining drum 2 can drive the crushing unit 3 thereon to rotate synchronously, so as to perform coal mining through the cutting tool 32 on the mounting seat 31. In the specific working process, the cutting tool 32 on the crushing unit 3 will only contact the coal mine when it extends to the outside of the coal mining drum 2. By controlling the two groups of crushing units 3 to extend alternately, one group of crushing units 3 is always kept in a working state, and the other group of crushing units 3 can be cooled inside the coal mining drum 2. Specifically, the corresponding electromagnet 51 is controlled to be powered on or off. When the electromagnet 51 is powered off, the elastic force of the support spring 52 pushes the sliding ring 41 to move along the axial direction of the driving shaft 23, and the sliding ring 41 can drive the connecting rods 42 thereon to move synchronously. The connecting rod 42 can drive the corresponding mounting seat 31 to move along the radial direction of the driving shaft 23 through the hinge rod 43 provided thereon, so that the outer sides of the mounting seats 31 in the same group of crushing units 3 are simultaneously extended to the outside of the coal mining drum 2. When the electromagnet 51 is powered on, the magnetic attraction generated by the electromagnet 51 causes the sliding ring 41 to move toward the side close to the electromagnet 51, so that the corresponding mounting seat 31 is pulled back into the coal mining drum 2 through the adjustment unit 4. In addition, during the operation of the coal mining drum 2, the exhaust fan 12 exhausts air toward the side away from the coal mining drum 2, thereby forming a negative pressure at the exhaust hole 22, so that the air inside the coal mining drum 2 can be discharged, and the air outside the coal mining drum 2 enters the coal mining drum 2 from the corresponding mounting hole 21. On the one hand, the dust generated during the coal mining process can be adsorbed on the coal mining drum 2 to reduce dust; on the other hand, by accelerating the air circulation inside the coal mining drum 2, the crushing unit 3 inside the coal mining drum 2 can be cooled, accelerating the temperature reduction of the crushing unit 3. When the mounting seat 31 in the mounting hole 21 is retracted into the coal mining drum 2, the elastic force of the return spring 62 will cause the corresponding isolation mesh plate 61 to cover the mounting hole 21 as a whole, preventing the dust generated during coal mining from entering the coal mining drum 2 through the mounting hole 21. In the process of the mounting seat 31 inside the coal mining drum 2 extending to the outside of the coal mining drum 2, the cutting tool 32 on the mounting seat 31 will abut against the inclined surface 611, and push the isolation mesh plate 61 to one side through the cooperation with the inclined surface 611, so that the mounting seat 31 can smoothly extend from the mounting hole 21.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An intelligent coal mining machine, comprising a coal mining machine body, wherein a driving arm is arranged on the coal mining machine body, characterized in that: Also includes: A coal mining drum, wherein a driving shaft is installed in the coal mining drum, and the driving shaft is in transmission connection with a driving arm, a plurality of mounting holes are arranged in a circle on the side wall of the coal mining drum, a plurality of exhaust holes are opened on a side of the coal mining drum close to the driving arm, and an exhaust assembly for forming a negative pressure at the exhaust hole is also provided on the driving arm; A crushing module, wherein the crushing module comprises two groups of crushing units, wherein the crushing units comprise a plurality of mounting seats arranged in a ring array around the driving shaft, and the mounting seats in the two groups of crushing units are arranged in an interlaced manner, and a mounting seat is correspondingly arranged in each mounting hole, and the mounting seat is slidably installed in the mounting hole along the radial direction of the driving shaft, and a plurality of cutting tools are equidistantly installed at one end of the mounting seat away from the driving shaft, and two groups of adjusting units are further arranged inside the coal mining drum, and the two groups of adjusting units are respectively arranged at the two ends of the coal mining drum and are respectively connected to a group of crushing units, and the adjusting unit is used to drive each mounting seat in a group of crushing units to synchronously move linearly along the radial direction of the driving shaft; The filter unit is installed on the side wall of the coal mining drum, and when the mounting seat in each mounting hole is retracted into the interior of the coal mining drum, the filter unit will cover the mounting hole.

2. The intelligent coal mining machine according to claim 1 is characterized in that: The exhaust assembly includes a plurality of exhaust ducts opened on the driving arm, and the exhaust ducts are opened at areas on the driving arm corresponding to the exhaust holes, and an exhaust fan is installed in each of the exhaust ducts.

3. The intelligent coal mining machine according to claim 2 is characterized in that: A dust collecting pipe is arranged between the end of the coal mining drum and the driving arm. The end of the dust collecting pipe close to the coal mining drum covers each exhaust hole inside, and the other end of the dust collecting pipe covers each exhaust fan inside. The dust collecting pipe is connected to the end of the coal mining drum through a bearing structure.

4. The intelligent coal mining machine according to claim 1, characterized in that: The adjusting unit comprises a sliding ring sleeved on the driving shaft, and a control unit for driving the sliding ring to move linearly along the radial direction of the driving shaft is also provided in the coal mining drum, a plurality of connecting rods are arranged in a ring on the sliding ring, and the number of the connecting rods is the same as the number of mounting seats in a group of crushing units, and each of the sliding rings is hinged with a hinged rod, and one end of the hinged rod away from the connecting rod is hinged to the inner side of the corresponding mounting seat.

5. The intelligent coal mining machine according to claim 4 is characterized in that: The control unit comprises an electromagnet installed at the end of the coal mining drum, and a side of the sliding ring close to the electromagnet is connected to the end of the coal mining drum through a supporting spring.

6. The intelligent coal mining machine according to claim 1, characterized in that: The filtering unit includes an isolation mesh plate, which is slidably installed on the coal mining drum along the circumference of the coal mining drum, and an isolation mesh plate is correspondingly arranged at each of the installation holes. The isolation mesh plate is connected to the coal mining drum through a plurality of return springs, and an inclined surface is arranged on the inner side of one end of the isolation mesh plate away from the isolation mesh plate.

7. The intelligent coal mining machine according to claim 1, characterized in that: The driving arm is detachably mounted on the coal mining machine body.

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