Permanent magnet all-wheel-drive electric roller

Abstract

The utility model relates to a permanent magnet all-wheel-drive electric roller which comprises a stator main shaft and a stator auxiliary shaft which are integrated with stator windings, a first rotor capable of rotating around the stator main shaft and a second rotor capable of rotating around the stator auxiliary shaft. The stator main shaft is arranged in the middle section cutting roller, the first rotor is fixedly connected with a shell of the middle section cutting roller, the stator auxiliary shaft is arranged in the telescopic section cutting roller, and the second rotor is fixedly connected with a shell of the telescopic section cutting roller. And power supply connecting wires of the stator main shaft and the stator auxiliary shaft are respectively connected with an external power supply. According to the device, the middle-section cutting roller can be independently driven to rotate, the telescopic-section cutting roller can be independently driven to rotate, or the middle-section cutting roller and the telescopic-section cutting roller can be simultaneously driven to rotate, and the device has the effects that unnecessary energy consumption during working of the cutting rollers is reduced, and the use scene of the cutting roller of the bolter miner is more flexible.

Description

Technical Field

[0001] The present application relates to the field of electric rollers, and in particular to a permanent magnet all-drive electric roller. Background Art

[0002] The current cutting drum of the bolter miner includes a middle section cutting drum and telescopic section cutting drums on both sides. The outer sides of the middle section cutting drum and the telescopic section cutting drum are provided with multiple sets of rock breaking teeth. The rock breaking teeth are spirally distributed and the tooth tips of the rock breaking teeth face the same direction of rotation as the inner cutting drum. When the bolter miner is working, the cross-section of the tunnel cut by the cutting drum is rectangular, and the corners of the cross-section are right angles. The current cutting drum of the bolter miner is usually driven by a diesel engine, while the middle section cutting drum and the telescopic section cutting drum are integrated into one. In actual construction, they can only be started and stopped synchronously, and the unnecessary energy consumption is high when working under some special scene conditions. Utility Model Content

[0003] In order to make the use scenarios of the cutting drum of the anchor miner more flexible and reduce unnecessary energy consumption when the cutting drum is working, the present application provides a permanent magnet all-wheel drive electric drum.

[0004] The permanent magnet full-drive electric drum provided in this application adopts the following technical solution:

[0005] A permanent magnet full-drive electric drum comprises a stator main shaft and a stator secondary shaft integrated with stator windings, a first rotor rotatable around the stator main shaft and a second rotor rotatable around the stator secondary shaft, the stator main shaft is arranged in an intermediate section cutting drum and the first rotor is fixedly connected to the outer shell of the intermediate section cutting drum, the stator secondary shaft is arranged in a telescopic section cutting drum and the second rotor is fixedly connected to the outer shell of the telescopic section cutting drum, and power connections of the stator main shaft and the stator secondary shaft are respectively connected to an external power supply.

[0006] By adopting the above technical scheme, permanent magnet electric technology is adopted, including one or more stator main shafts and stator secondary shafts with stator windings, a first rotor is rotatably arranged on the stator main shaft, a second rotor is rotatably arranged on the stator secondary shaft, and the power supply connections of the stator main shaft and the stator secondary shaft are respectively connected to the external power supply, and can be controlled separately, that is, the magnetic flux of the permanent magnets of the first rotor and the second rotor can be separately controlled by giving excitation current to the stator main shaft or the stator secondary shaft respectively, and then torque is generated through the interaction of magnetic fields, so as to realize the independent driving of the middle section cutting drum to rotate, the independent driving of the telescopic section cutting drum to rotate, or the driving of the middle section cutting drum and the telescopic section cutting drum to rotate at the same time, so that the permanent magnet full-drive electric drum of the present application can adapt to the application in more scenarios and reduce unnecessary energy consumption in special scenarios; and the permanent magnet electric technology is more energy-saving and environmentally friendly than the traditional diesel engine drive form, and has stable power output and high energy conversion efficiency.

[0007] Preferably, the stator main shaft and the stator secondary shaft are detachably fixedly connected.

[0008] By adopting the above technical solution, the stator main shaft and the stator secondary shaft can be detachably connected, which is convenient for separate processing and assembly.

[0009] Preferably, the stator main shaft and the stator secondary shaft are fixed by a connecting rod passing therebetween, the connecting rod is arranged along the axial direction of the stator main shaft and the stator secondary shaft, and both ends of the connecting rod are fixed by fasteners.

[0010] By adopting the above technical solution, after the connecting rod passes through the stator main shaft and the stator secondary shaft along the axis of the stator main shaft and the stator secondary shaft, the fasteners are screwed on both ends so that the fasteners abut against the end wall of the stator secondary shaft, thereby quickly fixing the stator main shaft and the stator secondary shaft.

[0011] Preferably, both ends of the stator main shaft are provided with mounting grooves extending along the axial direction thereof, the stator secondary shaft includes a main body portion and a plug-in portion arranged at one end of the main body portion for cooperating with the mounting groove, the main body portion is provided with a receiving groove extending along the axial direction thereof, the connecting rod passes through the stator main shaft and the plug-in portion and the end of the connecting rod extends into the receiving groove, and the fastener is arranged in the receiving groove.

[0012] By adopting the above technical solution, a plug-in portion is provided at the end of the stator secondary shaft to be plugged and fixed with the stator main shaft, the fixation of the stator main shaft and the stator secondary shaft is more secure, and a receiving groove extending along the axial direction of the stator secondary shaft is opened inside the stator secondary shaft, and the connecting rod penetrates the stator main shaft and the plug-in portion and then extends into the receiving groove, so that the fastener is arranged in the receiving groove, the probability of the fastener being loosened by external force is reduced, and the space in the telescopic section cutting drum is saved.

[0013] Preferably, a positioning step is formed between the plug-in portion and the main body portion, the plug-in portion has a conical shape, and the plug-in portion is interference fit with the mounting groove.

[0014] By adopting the above technical solution, the plug-in part is set to be conical, the plug-in of the stator secondary shaft and the stator main shaft is more labor-saving, and the plug-in part and the installation groove are set to have an interference fit, so that the stator main shaft and the stator secondary shaft are fixed more firmly.

[0015] Preferably, there is a gap between the end of the plug-in portion and the bottom of the installation groove.

[0016] By adopting the above technical solution, by setting the length of the installation groove to be greater than the length of the plug-in part, there is a gap between the end of the plug-in part and the bottom of the installation groove after the installation is completed, so that the connecting rod can be guaranteed to have a certain tension, the fixing effect of the stator main shaft and the stator secondary shaft can be guaranteed, and the stability can be improved.

[0017] Preferably, the second rotor is arranged at an end of the stator secondary shaft away from the stator main shaft.

[0018] By adopting the above technical solution, the second rotor is arranged at one end of the stator secondary shaft away from the stator main shaft, so that the supporting point of the second rotor on the stator secondary shaft is as far away as possible from the connecting point of the stator secondary shaft and the stator main shaft, thereby avoiding excessive stress concentration at the connecting point of the stator main shaft and the stator secondary shaft, and ensuring the normal operation of the equipment.

[0019] Preferably, the distance between the end wall of the second rotor close to the plug-in portion and the end face of the main body is 1 / 5 to 4 / 5 of the total length of the stator secondary shaft.

[0020] By adopting the above technical solution, stress concentration at the junction of the stator main shaft and the stator secondary shaft can be avoided, the strength and rigidity of the stator main shaft and the stator secondary shaft can be guaranteed, and the overall support stability of the stator shaft can be guaranteed.

[0021] Preferably, there is a distance between the end wall of the shell of the telescopic section cutting drum and the plug-in portion.

[0022] By adopting the above technical solution, the weight of the outer shell of the telescopic section cutting drum also affects the load-bearing performance of the stator secondary shaft. By setting the outer shell of the telescopic section cutting drum as far away as possible from the junction of the stator secondary shaft and the stator main shaft, stress concentration at the junction of the stator main shaft and the stator secondary shaft is avoided.

[0023] Preferably, a first through hole and a second through hole for passing the power connection of the stator auxiliary shaft are opened on the side wall, the first through hole and the second through hole are both connected to the accommodating groove, and the first through hole and the second through hole are distributed on both sides of the end wall of the telescopic section cutting drum.

[0024] By adopting the above technical solution, the first through hole and the second through hole are opened on the stator auxiliary shaft for the power wiring to pass through, and at least a part of the power wiring passes through the accommodating groove, so that the installation is more convenient.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. The present application provides a stator main shaft with integrated stator windings and a first rotor rotatably arranged on the stator main shaft inside the intermediate section cutting drum, and provides a stator secondary shaft with integrated stator windings and a second rotor rotatably arranged on the stator secondary shaft inside the telescopic section cutting drum, so that the intermediate section cutting drum or the telescopic section cutting drum can be driven to rotate alone, or the intermediate section cutting drum and the telescopic section cutting drum can be driven to rotate at the same time. The permanent magnet full-drive electric drum of the present application has a wider range of applications and is more environmentally friendly and energy-saving;

[0027] 2. A plug-in portion for plugging into the stator main shaft is provided at the end of the stator secondary shaft, and the plug-in portion and the stator main shaft are interference fit, and then a connecting rod is used to penetrate and fix the stator main shaft and the stator secondary shaft, so as to ensure that the stator main shaft and the stator secondary shaft are firmly fixed;

[0028] 3. By reasonably arranging the positions of the second rotor and the telescopic section cutting drum shell, the two are kept as far away from the connection point between the stator main shaft and the stator secondary shaft as possible, avoiding excessive stress concentration at the connection point, and ensuring the connection strength and stability between the stator main shaft and the stator secondary shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a partial cross-sectional schematic diagram of the permanent magnet full-drive electric drum of the utility model.

[0030] Figure 2 It is a partial enlarged view of the permanent magnet full-drive electric drum of the utility model.

[0031] Explanation of the reference numerals: 1. middle section cutting drum; 2. telescopic section cutting drum; 3. stator main shaft; 31. mounting groove; 4. stator secondary shaft; 41. main body; 411. accommodating groove; 42. plug-in part; 5. first rotor; 6. second rotor; 7. connecting rod; 8. fastener; 9. first through hole; 10. second through hole. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-2 This application is described in further detail.

[0033] The present application discloses a permanent magnet full-drive electric drum. Figure 1 and Figure 2The permanent magnet full-drive electric drum comprises a stator main shaft 3 with integrated stator windings arranged inside the middle section cutting drum 1, a first rotor 5 rotatably arranged on the stator main shaft 3, a stator secondary shaft 4 with integrated stator windings arranged inside the telescopic section cutting drum 2, and a second rotor 6 rotatably arranged on the stator secondary shaft 4. The first rotor 5 is fixedly connected to the outer shell of the middle section cutting drum 1, and the second rotor 6 is fixedly connected to the outer shell of the telescopic section cutting drum 2. The power supply wiring of the stator main shaft 3 and the stator secondary shaft 4 are connected to the external power supply respectively, and the excitation current given to the stator main shaft 3, the excitation current given to the stator secondary shaft 4, or the excitation current given to the stator main shaft 3 and the stator secondary shaft 4 at the same time can be controlled separately to achieve the purpose of separately controlling the magnetic flux of the permanent magnets of the first rotor 5 and the second rotor 6, so as to achieve the purpose of separately driving the middle section cutting drum 1 to rotate, separately driving the telescopic section cutting drum 2 to rotate, or driving the middle section cutting drum 1 and the telescopic section cutting drum 2 to rotate at the same time, so that the permanent magnet full-drive electric drum of the present application can be adapted to the application in more scenarios and reduce unnecessary energy consumption in certain working scenarios. Furthermore, the form and quantity of the stator windings on the stator main shaft 3 and the stator secondary shaft 4 can be the same or different, so as to control the rotation speed of the middle section cutting drum 1 and the telescopic section cutting drum 2 to be the same or different, and the driving form of the cutting drum is more flexible.

[0034] The permanent magnet electric technology used in this application also has the following excellent properties:

[0035] 1. High efficiency: It adopts permanent magnet electric drive technology to directly drive the drum pick to perform cutting operations, thereby improving the cutting efficiency and quality.

[0036] 2. Energy saving and environmental protection: Permanent magnet electric drive technology has the characteristics of high efficiency, which can consume less electricity at the same power and reduce operating costs. At the same time, due to the use of advanced permanent magnet materials and optimized design, the noise and vibration of the drive device are effectively controlled, improving the working environment.

[0037] 3. Low maintenance cost: The drive device has a simple structure and no wearing parts. After special treatment, it has high wear resistance and corrosion resistance. It can work stably for a long time in harsh working environment, reducing maintenance costs.

[0038] 4. High reliability: The drive device adopts advanced control technology and protection mechanism such as variable frequency speed regulation, which can ensure safe and reliable operation under various working conditions. At the same time, the drive device also has a fault self-diagnosis function, which can timely detect and deal with potential problems, avoiding downtime losses caused by faults.

[0039] 5. Easy to realize intelligence: The drive device is also equipped with advanced sensor networks and communication technologies to monitor the working status of the drum in real time and transmit the data to the ground control center for analysis and processing. According to the analysis results, the ground control center can remotely adjust the working parameters of the drum or issue instructions to automatically stop the drum for maintenance or replacement of parts. It is also possible to make the speed of each drum or the telescopic length of the two telescopic cutting drums 2 different according to different working conditions to adapt to different working conditions. This intelligent design makes the permanent magnet electric cutting drum of the anchor miner more suitable for modern tunnel excavation projects and improves the construction efficiency and quality of the project.

[0040] The stator main shaft 3 and the stator secondary shaft 4 are connected in a detachable fixed manner to facilitate processing and assembly. In the present application, the stator main shaft 3 and the stator secondary shaft 4 are fixedly connected using a connecting rod 7. That is, the connecting rod 7 is inserted between the stator main shaft 3 and the stator secondary shaft 4 along the axial direction of the two, and both ends of the connecting rod 7 pass through the stator secondary shaft 4. Then, the fastener 8 is fixed so that the fastener 8 abuts against the end wall of the stator secondary shaft 4, and the stator main shaft 3 and the stator secondary shaft 4 can be quickly fixed.

[0041] The stator main shaft 3 is provided with mounting grooves 31 extending along the axial direction thereof at both ends, and the stator secondary shaft 4 includes a main body 41 and a plug-in portion 42 provided at one end of the main body 41 for cooperating with the mounting groove 31, so that the stator secondary shaft 4 and the stator main shaft 3 are plugged and fixed, and the axes of the stator main shaft 3 and the stator secondary shaft 4 are ensured to coincide, so that the combination of the stator main shaft 3 and the stator secondary shaft 4 is more stable, and the strength of the combination point is improved. The main body 41 is provided with a receiving groove 411 extending along the axial direction thereof, and the connecting rod 7 passes through the stator main shaft 3 and the plug-in portion 42, and the end of the connecting rod 7 extends into the receiving groove 411, and the fastener 8 is provided in the receiving groove 411. This reduces the probability of the fastener 8 being loosened by external force, and saves space in the telescopic section cutting drum 2. In one embodiment, the connecting rod 7 can be a bare rod, and the fastener 8 is a bolt threadedly connected to the end wall of the connecting rod, and the head of the bolt is tightly abutted against the bottom of the receiving groove 411. In another embodiment, the connecting rod 7 may be a stud with an outer wall or only one end thereof having an external thread, and the fastener 8 may be a fastening nut threadedly connected to the end of the stud and abutting against the bottom of the receiving groove 411 .

[0042] In order to further improve the connection stability between the stator main shaft 3 and the stator auxiliary shaft 4 , a positioning step is formed between the plug-in portion 42 and the main body portion 41 , and the plug-in portion 42 has a conical shape, and the plug-in portion 42 is interference fit with the mounting groove 31 .

[0043] Preferably, the length of the installation groove 31 is greater than the length of the plug-in portion 42. After installation, there is a gap between the end of the plug-in portion 42 and the bottom of the installation groove 31, thereby ensuring that the connecting rod 7 has a certain tension, ensuring the fixing effect of the stator main shaft 3 and the stator secondary shaft 4, and improving stability.

[0044] In order to avoid excessive stress concentration at the junction of the stator main shaft 3 and the stator auxiliary shaft 4, the second rotor 6 is arranged at one end of the stator auxiliary shaft 4 away from the stator main shaft 3, so that the supporting point of the second rotor 6 on the stator auxiliary shaft 4 is as far away as possible from the junction of the stator auxiliary shaft 4 and the stator main shaft 3. In the present application, the distance between the end wall of the second rotor 6 close to the plug-in portion 42 and the end surface of the main body 41 is 1 / 5 to 4 / 5 of the total length of the stator auxiliary shaft 4.

[0045] At the same time, in order to reduce the influence of the weight of the telescopic section cutting drum 2 on the bearing capacity of the stator secondary shaft 4, the shell of the telescopic section cutting drum 2 is arranged as far away as possible from the connection point between the stator secondary shaft 4 and the stator main shaft 3, that is, there is also a distance between the end wall of the shell of the telescopic section cutting drum 2 and the plug-in portion 42 to avoid stress concentration at the connection point between the stator main shaft 3 and the stator secondary shaft 4.

[0046] A first through hole 9 and a second through hole 10 for passing the power wiring of the stator auxiliary shaft 4 are provided on the side wall. The first through hole 9 and the second through hole 10 are both connected to the accommodating groove 411, and the first through hole 9 and the second through hole 10 are distributed on both sides of the end wall of the telescopic section cutting drum 2.

[0047] The implementation principle of a permanent magnet full-drive electric drum in an embodiment of the present application is as follows: permanent magnet electric technology is adopted, including one or more stator main shafts 3 and stator secondary shafts 4 with stator windings, a first rotor 5 is rotatably arranged on the stator main shaft 3, a second rotor 6 is rotatably arranged on the stator secondary shaft 4, and the power supply connections of the stator main shaft 3 and the stator secondary shaft 4 are respectively connected to an external power supply, so as to separately control the magnetic flux of the permanent magnets of the first rotor 5 and the second rotor 6 by giving excitation current to the stator main shaft 3 or the stator secondary shaft 4 respectively, so as to realize the independent driving of the middle section cutting drum 1 to rotate, the independent driving of the telescopic section cutting drum 2 to rotate, or the driving of the middle section cutting drum 1 and the telescopic section cutting drum 2 to rotate at the same time, so that the permanent magnet full-drive electric drum of the present application can adapt to the application in more scenarios.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A permanent magnet full-drive electric drum, characterized in that: The invention comprises a stator main shaft (3) and a stator secondary shaft (4) integrated with a stator winding, a first rotor (5) rotatable around the stator main shaft (3), and a second rotor (6) rotatable around the stator secondary shaft (4); the stator main shaft (3) is arranged in an intermediate section cutting drum (1) and the first rotor (5) is fixedly connected to the outer shell of the intermediate section cutting drum (1); the stator secondary shaft (4) is arranged in a telescopic section cutting drum (2) and the second rotor (6) is fixedly connected to the outer shell of the telescopic section cutting drum (2); and power supply connections of the stator main shaft (3) and the stator secondary shaft (4) are respectively connected to an external power supply.

2. The permanent magnet full-drive electric drum according to claim 1, characterized in that: The stator main shaft (3) and the stator secondary shaft (4) are detachably fixedly connected.

3. The permanent magnet full-drive electric drum according to claim 2, characterized in that: The stator main shaft (3) and the stator secondary shaft (4) are fixed by a connecting rod (7) passing through the two, the connecting rod (7) is arranged along the axial direction of the stator main shaft (3) and the stator secondary shaft (4), and the two ends of the connecting rod (7) are fixed by fasteners (8).

4. The permanent magnet full-drive electric drum according to claim 3 is characterized in that: Both ends of the stator main shaft (3) are provided with mounting grooves (31) extending along the axial direction thereof; the stator secondary shaft (4) comprises a main body (41) and a plug-in portion (42) arranged at one end of the main body (41) and used to cooperate with the mounting groove (31); a receiving groove (411) extending along the axial direction thereof is arranged inside the main body (41); the connecting rod (7) passes through the stator main shaft (3) and the plug-in portion (42), and the end of the connecting rod (7) extends into the receiving groove (411); and the fastener (8) is arranged in the receiving groove (411).

5. The permanent magnet full-drive electric drum according to claim 4, characterized in that: A positioning step is formed between the plug-in portion (42) and the main body portion (41); the plug-in portion (42) has a conical shape, and the plug-in portion (42) is interference-fitted with the mounting groove (31).

6. The permanent magnet full-drive electric drum according to claim 4, characterized in that: There is a gap between the end of the plug-in portion (42) and the bottom of the installation groove (31).

7. The permanent magnet full-drive electric drum according to claim 4, characterized in that: The second rotor (6) is arranged at an end of the stator secondary shaft (4) away from the stator main shaft (3).

8. The permanent magnet full-drive electric drum according to claim 7, characterized in that: The distance between the end wall of the second rotor (6) on the side close to the plug-in portion (42) and the end surface of the main body (41) is 1 / 5 to 4 / 5 of the total length of the stator auxiliary shaft (4).

9. The permanent magnet full-drive electric drum according to claim 4, characterized in that: There is a distance between the end wall of the outer shell of the telescopic section cutting drum (2) and the plug-in portion (42).

10. The permanent magnet all-drive electric drum according to claim 4, characterized in that: A first through hole (9) and a second through hole (10) for passing the power connection of the stator auxiliary shaft (4) are provided on the side wall of the stator auxiliary shaft (4), and the first through hole (9) and the second through hole (10) are distributed on both sides of the end wall of the telescopic section cutting drum (2).

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