CN113241896A - Cutting part of heading machine and heading machine applying same - Google Patents
Cutting part of heading machine and heading machine applying same Download PDFInfo
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- CN113241896A CN113241896A CN202110557695.3A CN202110557695A CN113241896A CN 113241896 A CN113241896 A CN 113241896A CN 202110557695 A CN202110557695 A CN 202110557695A CN 113241896 A CN113241896 A CN 113241896A
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- outer rotor
- sleeve
- heading machine
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- 238000005520 cutting process Methods 0.000 title claims abstract description 103
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 56
- 230000001360 synchronised effect Effects 0.000 claims abstract description 29
- 238000001816 cooling Methods 0.000 claims description 19
- 230000008093 supporting effect Effects 0.000 claims description 14
- 238000004804 winding Methods 0.000 claims description 12
- 230000007246 mechanism Effects 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims 1
- 239000011435 rock Substances 0.000 abstract description 14
- 239000003638 chemical reducing agent Substances 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 11
- 238000009413 insulation Methods 0.000 abstract description 6
- 239000004576 sand Substances 0.000 description 8
- 230000005641 tunneling Effects 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000191 radiation effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
- E21C25/06—Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C31/00—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam
- E21C31/02—Driving means incorporated in machines for slitting or completely freeing the mineral from the seam for cutting or breaking-down devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention provides a cutting part of a heading machine and the heading machine using the same, comprising: the outer rotor permanent magnet synchronous motor comprises a stator component and an outer rotor component rotating around the stator component; and the cutting head assembly is connected to the outer rotor assembly through a rotating shaft. The outer rotor permanent magnet synchronous motor is directly connected to the cutting head assembly, so that the rock stratum is crushed. A cutting speed reducer is not arranged between the outer rotor permanent magnet synchronous motor and the cutting head assembly, so that an important fault source is reduced, and the fault rate of the development machine is reduced. The outer rotor permanent magnet synchronous motor has high working efficiency and good energy-saving effect. When the outer rotor assembly rotates around the stator assembly, the water body and the silt on the surface of the outer rotor are discharged by utilizing centrifugal force, so that the water body and the silt are prevented from permeating into the interior of the motor body of the motor, the insulation damage is avoided, and the failure rate of the motor is reduced.
Description
Technical Field
The invention relates to the technical field of tunneling operation machinery, in particular to a cutting part of a tunneling machine and the tunneling machine using the cutting part.
Background
The development machine is a very key production device in the coal industry, the most main part of the development machine is a cutting part, and the cutting part comprises a cutting motor, a cutting speed reducer, a telescopic mechanism, a cutting head and other components. The cutting motor drives the cutting head assembly to rotate through the cutting speed reducer, and cutting and crushing of the rock stratum are achieved. The cutting motor and the cutting speed reducer are affected by factors such as water, sand, broken rocks and the like in the environment when working, the cutting speed reducer is damaged or abnormally-sounding due to poor water feeding and lubrication, the cutting motor often has the problems of insulation damage and the like, the faults of the cutting motor and the cutting speed reducer account for more than 60% of the total faults of the cutting part, and the operation of the whole heading machine is directly affected.
Disclosure of Invention
The invention provides a cutting part of a heading machine, which is used for solving the defect that a cutting motor and a cutting speed reducer are easily damaged by moisture and mud and sand in the environment in the prior art, reducing the failure rate of the cutting part of the heading machine and improving the production efficiency of the heading machine.
Meanwhile, the invention also provides a heading machine.
According to a first aspect of the invention, there is provided a cutting part of a heading machine, comprising:
the outer rotor permanent magnet synchronous motor comprises a stator component and an outer rotor component rotating around the stator component;
and the cutting head assembly is connected to the outer rotor assembly through a rotating shaft.
The invention provides a cutting part of a heading machine, wherein a stator assembly comprises a stator core supporting piece, a stator core arranged on the stator core supporting piece and a stator winding wound on the stator core.
The invention provides a cutting part of a heading machine, wherein a stator core supporting piece comprises a stator component seat, a stator inner sleeve arranged on the stator component seat and a stator outer sleeve sleeved on the outer side wall of the stator inner sleeve;
the stator assembly seat is characterized in that a circulating water channel is arranged on the outer side wall of the stator inner sleeve and/or the inner side wall of the stator outer sleeve and comprises a water inlet end and a water outlet end, a water through hole is axially formed in the stator inner sleeve, a through water inlet hole and a through water outlet hole are formed in the stator assembly seat, the water inlet end is communicated with the water inlet hole through the water through hole, and the water outlet end is communicated with the water outlet hole through the water through hole.
The invention provides a cutting part of a heading machine, wherein a circulating water channel is a groove which is spirally formed along the circumferential direction or a groove which reciprocates along the axial direction.
The invention provides a cutting part of a heading machine, wherein a cooling fan is arranged on an outer rotor assembly and is arranged corresponding to the position of a stator core.
The invention provides a cutting part of a heading machine, wherein an outer rotor assembly comprises a rotor sleeve with two through ends, permanent magnets uniformly arranged on the inner wall of the rotor sleeve and an end cover arranged at one end of the rotor sleeve;
the rotor sleeve is arranged on the outer side of the stator assembly, and the center of one side, away from the stator assembly, of the end cover is connected to the rotating shaft through a spline sleeve.
The invention provides a cutting part of a heading machine, which further comprises a turntable bearing arranged between a stator component and an outer rotor component.
The invention provides a cutting part of a heading machine, which also comprises a support cantilever, wherein two ends of the support cantilever are communicated and sleeved on a rotating shaft, and a roller bearing is arranged between the inner wall of the support cantilever and the rotating shaft;
and/or the cutting head assembly further comprises a self-aligning bearing arranged on the inner wall of one end, close to the cutting head assembly, of the support cantilever, and the rotating shaft is rotatably connected to the support cantilever through the self-aligning bearing.
The invention provides a cutting part of a heading machine, wherein a support cantilever is connected to a stator assembly through a cantilever support seat, the cantilever support seat is of a cylindrical structure with an opening at a first end, and the cantilever support seat is sleeved on the outer side of an outer rotor assembly;
the end face of the second end of the cantilever supporting seat is provided with a through hole, and the rotating shaft is inserted into the through hole and connected to the outer rotor assembly.
Meanwhile, according to the heading machine provided by the embodiment of the second aspect of the invention, the heading machine comprises a travelling mechanism and the cutting part of the heading machine provided by the embodiment of the first aspect of the invention, and the cutting part of the heading machine is arranged on the travelling mechanism.
One or more technical solutions in the present invention have at least one of the following technical effects:
the cutting part of the heading machine provided by the invention comprises an outer rotor permanent magnet synchronous motor and a cutting head assembly, wherein the outer rotor assembly rotates around a stator assembly, and the outer rotor assembly directly drives the cutting head assembly to finish cutting and crushing of a rock stratum. A cutting speed reducer is not arranged between the outer rotor permanent magnet synchronous motor and the cutting head assembly, so that an important fault source is reduced, and the fault rate of the development machine is reduced. The outer rotor permanent magnet synchronous motor has high working efficiency and good energy-saving effect. When the outer rotor assembly rotates around the stator assembly, water and sand on the surface of the outer rotor assembly can be discharged by utilizing centrifugal force, so that the water and the sand are prevented from permeating into the interior of the motor body of the motor, the insulation damage is avoided, and the failure rate of the motor is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a cross-sectional view of a cutting part of a heading machine provided by the invention;
FIG. 2 is a cross-sectional view of a stator assembly provided by the present invention;
FIG. 3 is a cross-sectional view of the stator inner sleeve and stator outer sleeve provided by the present invention;
FIG. 4 is a cross-sectional view of an outer rotor assembly provided by the present invention;
fig. 5 is a left side view of the outer rotor assembly provided by the present invention.
Reference numerals:
4: a spline housing; 5: a rotating shaft; 6: a support boom;
7: a cutter head assembly; 8: a cantilever supporting seat; 9: an outer rotor permanent magnet synchronous motor;
91: a stator assembly; 911: a stator assembly mount; 912: a stator core;
913: a stator winding; 914: a turntable bearing; 915: a high-precision encoder;
916: a stator inner sleeve; 917: a stator housing; 92: an outer rotor assembly;
921: a rotor housing; 922: a permanent magnet; 923: an end cap;
10: a roller bearing; 11: a self-aligning bearing; 13: a circulating water channel;
9111: a water inlet hole; 9112: a water outlet hole; 9161: and a water through hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The cutting motor and the cutting speed reducer are affected by factors such as water, sand, broken rocks and the like in the environment when working, the cutting speed reducer is damaged or abnormally-sounding due to poor water feeding and lubrication, the cutting motor often has the problems of insulation damage and the like, the faults of the cutting motor and the cutting speed reducer account for more than 60% of the total faults of the cutting part, and the operation of the whole heading machine is directly affected.
The first embodiment of the invention provides a cutting part of a heading machine, and the composition structure and the working principle of the cutting part of the heading machine are described below with reference to fig. 1 to 5.
The cutting part of the heading machine comprises a cutting head assembly 7 and an outer rotor permanent magnet synchronous motor 9.
The outer rotor permanent magnet synchronous motor 9 includes a stator assembly 91 and an outer rotor assembly 92, and the outer rotor assembly 92 is sleeved outside the stator assembly 91 and rotates around the stator assembly 91.
The external rotor assembly 92 is connected to the cutting head assembly 7 through the rotating shaft 5, and a plurality of tooth parts are arranged on the cutting head assembly 7 and used for crushing rock strata, wherein the rock strata can be coal strata.
When the external rotor permanent magnet synchronous motor is used, the external rotor permanent magnet synchronous motor 9 is connected to the control device and the power supply circuit, the external rotor component 92 and the stator component 91 rotate relatively, and the external rotor component 92 drives the cutting head component 7 to crush rock strata.
The outer rotor permanent magnet synchronous motor 9 is directly connected to the cutting head assembly 7, so that rock stratum crushing is realized. A cutting speed reducer is not arranged between the outer rotor permanent magnet synchronous motor 9 and the cutting head assembly 7, so that an important fault source is reduced, and the fault rate of the development machine is reduced.
The outer rotor permanent magnet synchronous motor 9 has high working efficiency, the working efficiency of the low-speed and large-torque permanent magnet synchronous motor can reach more than 90%, and the energy-saving effect is good.
When the outer rotor assembly 92 rotates around the stator assembly 91, the water and the silt on the surface of the outer rotor assembly 92 can be discharged by using centrifugal force, so that the water and the silt are prevented from permeating into the interior of the motor body of the motor, the insulation damage is avoided, and the failure rate of the motor is reduced.
The cutting part of the heading machine is driven by an outer rotor permanent magnet synchronous motor, so that the speed adjustment and the torque adjustment in a wider range can be realized, and the heading machine can adapt to a more complex working environment. The cutting part of the heading machine has the advantages of simple overall structure, lower vibration and higher reliability, prolongs the maintenance period of the cutting part of the heading machine and reduces the maintenance cost.
According to one embodiment of the present invention, stator assembly 91 includes a stator core support, a stator core 912 disposed on the stator core support, and a stator winding 913 having stator winding 913 wound around stator core 912. Stator winding 913 wound around stator core 912 is energized to form a stable rotating magnetic field, which drives outer rotor assembly 92 to rotate.
The stator core support mainly has two functions, that is, firstly, the stator core 912, the stator winding 913 and the outer rotor assembly 92 are maintained in a positional relationship, and the outer rotor assembly 92 can stably rotate around the stator assembly 91 when the stator winding 913 forms a stable rotating magnetic field after being energized. Secondly, the stator core support is used to secure the stator assembly 91 to the arms or travelling mechanism of the machine to a predetermined working position under the action of the arms or travelling mechanism.
Stator windings are provided in the stator assembly 91, and the wire resistance of the stator windings generates heat when energized. Meanwhile, the changing magnetic field can form eddy current, so that the internal temperature of the motor is increased, and adverse effects are brought to the continuous operation of the cutting part of the heading machine.
According to one embodiment of the invention, the outer rotor permanent magnet synchronous motor 9 is provided with a cooling structure.
In one embodiment, a cooling structure is disposed on the outer rotor assembly 92, such as a cooling fan, and blades of the cooling fan move synchronously with the outer rotor assembly 92 to push air around and inside the outer rotor pmsm 9 to take away heat of the outer rotor pmsm 9, thereby achieving a heat dissipation effect.
In order to improve the heat radiation effect, the cooling fan is provided corresponding to the position of the heat source, that is, the position of the cooling fan corresponding to stator core 912. The cooling fan takes away heat from stator core 912 and stator winding 913, and a good heat dissipation effect is achieved.
In another embodiment, a cooling structure is disposed within the stator assembly 91.
According to one embodiment of the invention, the stator core support includes a stator assembly seat 911, a stator inner sleeve 916, and a stator outer sleeve 917.
The stator assembly seat 911 is used for connecting a mechanical arm of a heading machine or other working machines, and the stator inner sleeve 916 is arranged on the stator assembly seat 911 and is kept stable under the action of the stator assembly seat 911. The stator inner 916 is fixed to the stator assembly seat 911 by bolts, and then the stator outer 917 is fitted over the outer sidewall of the stator inner 916.
The stator inner sleeve 916 and the stator outer sleeve 917 are fixedly connected through a bolt or a buckle structure, so that relative sliding between the two is avoided.
In order to increase the structural stability, the stator outer sleeve 917 and the stator assembly seat 911 are connected by bolts, so that the overall stability of the stator assembly 91 can be increased.
In one embodiment, the stator outer sleeve 917 is fixedly connected to the stator assembly seat 911 for primary connection, and the stator inner sleeve 916 is inserted into the stator outer sleeve 917.
The stator core 912 is disposed on a side wall of the stator outer sleeve 917, and a cooling structure is configured between the stator inner sleeve 916 and the stator outer sleeve 917.
In the first embodiment, the circulation water passage 13 is provided on the outer side wall of the stator inner sleeve 916.
In the second embodiment, the circulation water path 13 is provided on the inner side wall of the stator housing 917.
In the third embodiment, the circulation water channel 13 may be disposed on both the outer side wall of the stator inner case 916 and the inner side wall of the stator outer case 917.
The circulating water channel 13 comprises a water inlet end and a water outlet end, 2 water through holes 9161 are axially formed in the inner part of the stator inner sleeve 916, and a through water inlet hole 9111 and a water outlet hole 9112 are formed in the stator assembly seat 911. The water inlet end is communicated with the water inlet hole 9111 through a water through hole 9161, and the water outlet end is communicated with the water outlet hole 9112 through the water through hole 9161.
During the use, pour into the circulating water in inlet opening 9111 department, the circulating water passes through inlet opening 9111, crosses water hole 9161, the end of intaking, circulating water channel 13, goes out the water end, crosses water hole 9161 and apopore 9112 in proper order, takes away the heat in the stator module 91 at the in-process of circulating water circulation.
In one embodiment, the circulation water channel 13 is a groove spirally arranged in a circumferential direction. The spiral grooves are uniformly formed in the stator inner sleeve 916 or the stator outer sleeve 917, the coverage range is wide, and the cooling effect is good.
In another embodiment, the circulating water channel 13 is a groove which is arranged in an axial reciprocating manner, and the groove which is arranged in the axial reciprocating manner is uniformly arranged on the stator inner sleeve 916 or the stator outer sleeve 917, so that the cooling effect is better.
The cooling structure is provided on the stator assembly 91, and at this time, the cooling structure can be operated independently without being affected by the rotation speed of the outer rotor assembly 92. When the temperature is too high, the power of the cooling structure is increased, the temperature can be rapidly reduced, and the outer rotor permanent magnet synchronous motor 9 can keep the original power to work.
According to an embodiment of the present invention, the outer rotor assembly 92 includes a rotor sleeve 921, permanent magnets 922, and an end cap 923.
The rotor sleeve 921 includes opposite first end and second end, and the rotor sleeve 921 is the tubular structure that the terminal surface of first end and the terminal surface of second end link up, and the rotor sleeve 921 cover is established in stator module 91's the outside. The permanent magnets 922 are uniformly disposed on the inner wall of the rotor sleeve 921 at a certain interval from the stator assembly 91.
The first end of rotor housing 921 is provided with end cover 923, and the one side that stator module 91 was kept away from to end cover 923 is the terminal surface, and the central point of terminal surface puts and is provided with the spliced pole, and the spliced pole passes through spline housing 4 to be connected in rotation axis 5.
During the use, rotor cover 921 rotates around stator module 91 under stator module 91 and the effect of permanent magnet 922, and then drives end cover 923 and rotates. The end face of the end cover 923 drives the rotating shaft 5 to rotate through the connecting column and the spline housing 4, and then drives the cutting head assembly 7 to crush rock strata.
The spline housing 4 is connected with the rotating shaft 5 to realize the transmission of torque and transmit power to the cutting head assembly 7. The spline housing 4 has high strength and simple structure, and is beneficial to reducing the difficulty of installation and maintenance of the rotating shaft 5.
The outer rotor assembly 92 rotates around the stator assembly 91 to drive the cutter head assembly 7 to operate. In order to keep the outer rotor assembly 92 stable when rotating, a turntable bearing 914 is disposed between the stator assembly 91 and the outer rotor assembly 92, and the turntable bearing 914 can maintain the spacing and position between the stator assembly 91 and the outer rotor assembly 92.
In the case where the stator assembly 91 includes the stator inner sleeve 916 and the outer rotor assembly 92 includes the rotor sleeve 921, the turntable bearing 914 is disposed between the stator inner sleeve 916 and the rotor sleeve 921.
According to the cutting part of the heading machine provided by the embodiment of the invention, the outer rotor permanent magnet synchronous motor 9 is connected to the cutting head component 7 through the rotating shaft 5, and the rotating shaft 5 is in a cantilever state. In order to increase the stability of the rotating shaft 5, the rotating shaft 5 needs to be effectively supported.
According to one embodiment of the invention, a support cantilever 6 is provided outside the rotating shaft 5. The supporting cantilever 6 is a cylindrical structure with two through ends, and the supporting cantilever 6 is sleeved on the outer side of the rotating shaft 5. In order to maintain the distance and position between the support arm 6 and the rotating shaft 5 and to exert the supporting effect of the support arm 6 on the rotating shaft 5, a roller bearing 10 is provided between the inner wall of the support arm 6 and the rotating shaft 5.
When the rotating shaft 5 rotates, the roller bearing 10 can maintain the position of the rotating shaft 5, and further stably transmit the torque of the outer rotor permanent magnet synchronous motor 9 to the cutting head assembly 7.
In one embodiment, a plurality of roller bearings 10 are mounted on the rotating shaft 5, and the plurality of roller bearings 10 can further increase the stability of the rotating shaft 5.
In one embodiment, a self-aligning bearing 11 is further provided between the rotating shaft 5 and the support boom 6. The self-aligning bearing 11 is arranged on the inner wall of the end of the support boom 6 near the cutter head assembly 7.
When the rotating shaft 5 rotates, the self-aligning bearing 11 can bear certain axial load and radial load. Meanwhile, the self-aligning bearing 11 can also compensate for the coaxiality error, so that automatic alignment can be realized.
In order to simplify the structure of the cutting part of the heading machine, the support boom 6 is connected to the stator assembly 91 via the boom support 8, without the need to connect the support boom 6 to other parts of the heading machine.
According to an embodiment of the present invention, the cantilever support 8 is a cylindrical structure with an open first end, and the cantilever support 8 is sleeved outside the outer rotor assembly 92 and keeps a certain distance from the outer rotor assembly 92.
The end face of the second end of the cantilever support base 8 is provided with a through hole, and the rotating shaft 5 is movably inserted into the through hole and connected to the outer rotor component 92.
The cantilever support base 8 is disposed outside the outer rotor assembly 92, does not interfere with the movement of the outer rotor assembly 92, and can also fix the support cantilever 6 to the stator assembly 91.
In the case where the stator assembly 91 includes the stator assembly seat 911, the first end of the cantilever support base 8 is connected to the stator assembly seat 911 to form a fixed structure. The rotating shaft 5 is supported by the structure of the outer rotor permanent magnet synchronous motor 9, and the structure is simple and convenient to assemble and maintain.
The cantilever supporting seat 8 is arranged on the outer side of the outer rotor assembly 92, so that moisture and sand can be prevented from contacting the outer rotor assembly 92, and the failure rate of the outer rotor permanent magnet synchronous motor 9 is reduced.
According to the cutting part of the heading machine provided by the embodiment of the invention, the working efficiency or the rotating speed needs to be adjusted according to the actual condition of a rock stratum during working.
According to one embodiment of the present invention, a high-precision encoder 915 is provided on the stator assembly 91. The high-precision encoder 915 can realize the feedback of a rotation signal, and can accurately control the rotation speed of the rotating shaft 5 through the cooperation with a control system, so as to adjust the working efficiency of the cutting part of the heading machine.
According to one embodiment of the present invention, the stator assembly 91 includes a stator assembly seat 911, an inner stator sleeve 916, an outer stator sleeve 917, a stator core 912, and a stator winding 913, wherein the inner stator sleeve 916 and the outer stator sleeve 917 have a circulating water channel 13 therein, and the stator assembly 91 further has a high-precision encoder 915 thereon.
The outer rotor assembly 92 comprises a rotor sleeve 921, a permanent magnet 922 and an end cover 923, the permanent magnet 922 is uniformly arranged on the inner wall of the rotor sleeve 921, the rotor sleeve 921 is sleeved on the outer side of the stator outer sleeve 917, the stator inner sleeve 916 and the rotor sleeve 921 are connected through a turntable bearing 914, and the end cover 923 is connected to the rotating shaft 5 through a spline sleeve 4.
The one end that end cover 923 was kept away from to rotation axis 5 is connected in cutterhead subassembly 7, and the cover is equipped with support cantilever 6 on the rotation axis 5, supports to be provided with roller bearing 10 and self-aligning bearing 11 between cantilever 6 and the rotation axis 5, supports cantilever 6 and installs on stator subassembly seat 911 through cantilever supporting seat 8.
Meanwhile, the embodiment of the second aspect of the invention also provides a heading machine, the heading machine comprises a travelling mechanism and the cutting part of the heading machine provided by the embodiment of the first aspect of the invention, and the cutting part of the heading machine is directly arranged on the travelling mechanism or is arranged on the travelling mechanism through a mechanical arm.
When the rock stratum crusher is used, the tunneling machine moves to a working position, and the cutting part of the tunneling machine crushes the rock stratum.
In summary, the heading machine cutting part and the heading machine using the same provided by the invention comprise the outer rotor permanent magnet synchronous motor and the cutting head assembly, wherein the outer rotor assembly rotates around the stator assembly, and the outer rotor assembly directly drives the cutting head assembly to complete cutting and crushing of rock strata. A cutting speed reducer is not arranged between the outer rotor permanent magnet synchronous motor and the cutting head assembly, so that an important fault source is reduced, and the fault rate of the development machine is reduced. The outer rotor permanent magnet synchronous motor has high working efficiency and good energy-saving effect. When the outer rotor assembly rotates around the stator assembly, water and sand on the surface of the outer rotor assembly can be discharged by utilizing centrifugal force, so that the water and the sand are prevented from permeating into the interior of the motor body of the motor, the insulation damage is avoided, and the failure rate of the motor is reduced.
Under the condition that stator module is provided with cooling structure, cooling structure can in time transmit the heat in the motor to the outside, ensures the normal work of motor.
Under the condition that the turntable bearing is arranged between the stator assembly and the outer rotor assembly, the turntable bearing can keep the distance and the position between the stator assembly and the outer rotor assembly, and the structural stability of the outer rotor permanent magnet synchronous motor is improved.
Under the condition that the supporting cantilever is arranged on the rotating shaft, the supporting cantilever can increase the stability of the rotating shaft during rotation, and further ensure the stability of the cutting head assembly during working.
Under the condition that the self-aligning bearing is arranged in the supporting cantilever, the self-aligning bearing can compensate the coaxiality error, and automatic alignment can be realized.
Under the condition that a high-precision encoder is arranged on the stator assembly, the high-precision encoder can realize the feedback of a rotation signal, and the rotation speed of the rotating shaft can be accurately controlled through the cooperation with a control system, so that the working efficiency of the cutting part of the heading machine is adjusted.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A heading machine cutting section, comprising:
the outer rotor permanent magnet synchronous motor comprises a stator component and an outer rotor component rotating around the stator component;
and the cutting head assembly is connected to the outer rotor assembly through a rotating shaft.
2. The roadheader cutting section of claim 1, wherein the stator assembly comprises a stator core support, a stator core disposed on the stator core support, and stator windings wound on the stator core.
3. The roadheader cutting section of claim 2, wherein the stator core support comprises a stator assembly seat, a stator inner sleeve disposed on the stator assembly seat, and a stator outer sleeve sleeved on an outer sidewall of the stator inner sleeve;
the stator assembly seat is characterized in that a circulating water channel is arranged on the outer side wall of the stator inner sleeve and/or the inner side wall of the stator outer sleeve and comprises a water inlet end and a water outlet end, a water through hole is axially formed in the stator inner sleeve, a through water inlet hole and a through water outlet hole are formed in the stator assembly seat, the water inlet end is communicated with the water inlet hole through the water through hole, and the water outlet end is communicated with the water outlet hole through the water through hole.
4. The cutter of claim 3 wherein the circulating water channel is a groove that spirals in a circumferential direction or a groove that reciprocates in an axial direction.
5. The roadheader cutting unit of claim 2, characterized in that said external rotor assembly is provided with cooling fans, said cooling fans being provided in correspondence of the positions of said stator cores.
6. The heading machine cutting unit according to claim 1, wherein the outer rotor assembly comprises a rotor sleeve with two ends penetrating, permanent magnets uniformly arranged on the inner wall of the rotor sleeve, and an end cover arranged at one end of the rotor sleeve;
the rotor sleeve is arranged on the outer side of the stator assembly, and the center of one side, away from the stator assembly, of the end cover is connected to the rotating shaft through a spline sleeve.
7. The roadheader cutting section of claim 1, further comprising a turntable bearing disposed between the stator assembly and the outer rotor assembly.
8. The cutting part of the heading machine of claim 1, further comprising a support cantilever, wherein two ends of the support cantilever penetrate through and are sleeved on the rotating shaft, and a roller bearing is arranged between the inner wall of the support cantilever and the rotating shaft;
and/or the cutting head assembly further comprises a self-aligning bearing arranged on the inner wall of one end, close to the cutting head assembly, of the support cantilever, and the rotating shaft is rotatably connected to the support cantilever through the self-aligning bearing.
9. The roadheader cutting unit of claim 8, wherein the support boom is connected to the stator assembly through a boom support base, the boom support base is a first open-ended cylindrical structure, and the boom support base is sleeved outside the outer rotor assembly;
the end face of the second end of the cantilever supporting seat is provided with a through hole, and the rotating shaft is inserted into the through hole and connected to the outer rotor assembly.
10. A roadheader comprising a travelling mechanism and a roadheader cutting unit according to any one of claims 1 to 9, said roadheader cutting unit being mounted on said travelling mechanism.
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| CN202110557695.3A CN113241896A (en) | 2021-05-21 | 2021-05-21 | Cutting part of heading machine and heading machine applying same |
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| CN202110557695.3A CN113241896A (en) | 2021-05-21 | 2021-05-21 | Cutting part of heading machine and heading machine applying same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114583854A (en) * | 2022-03-21 | 2022-06-03 | 中车永济电机有限公司 | Cutting part structure of tunneling and anchoring machine |
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