Explosion-proof high-speed permanent magnet motor

Abstract

The application discloses an explosion-proof high-speed permanent magnet motor and relates to the technical field of motors. The motor shell is provided with end covers at two ends, high-precision bearings are used to install the shaft, so that dynamic balance and low friction during high-speed operation are ensured, an oil storage groove is arranged on the end cover, the oil storage groove is filled with lubricating oil, and through a rotating speed adjusting unit and a temperature adjusting unit, adjusting liquid in the groove is adjusted to flow into the oil storage groove according to the rotating speed and temperature change of the shaft, so that the adjusting liquid pushes the extrusion block to move, the lubricating oil in the oil storage groove flows into the bearing interior through the inflow channel of the bearing, and the bearing is supplemented with lubrication, a reset spring is arranged between the extrusion block and the oil storage groove, so that the extrusion block can be reset when the rotating speed and temperature of the shaft recover, and the explosion-proof effect of the motor is enhanced through the arrangement of the explosion-proof mechanism.

Description

Technical Field

[0001] This invention relates to the field of motor technology, specifically an explosion-proof high-speed permanent magnet motor. Background Technology

[0002] With the rapid development of new energy vehicles, motors have become a major component in automobiles. Electric vehicles and other motor vehicles typically use high-speed permanent magnet motors. In certain situations where there are explosion sources, it is usually necessary to design explosion-proof motors for these vehicles.

[0003] Because electric sparks may be generated during the operation of the stator and rotor, their internal cavities must be strictly sealed to isolate flammable materials. This directly means that the motor cannot rely on traditional external air cooling for heat dissipation. When the motor's main shaft bearings operate at high speeds, they not only bear huge mechanical loads, but the increased bearing temperature also accelerates the evaporation of the grease base oil, leading to increased friction. When insufficient lubrication causes dry friction or fretting wear between the raceway and rolling elements, the frictional heat accumulates rapidly, easily causing bearing burnout or thermal deformation. The local temperature rise may instantly reach the ignition point, resulting in sparks and safety hazards. Furthermore, when the motor's main shaft bearings increase their operating speed, centrifugal force is also amplified, causing the grease to be thrown off, resulting in insufficient lubrication. Summary of the Invention

[0004] The technical problem to be solved by this invention is that insufficient lubrication of the bearings during high-speed spindle rotation easily leads to frictional sparks, and provides an explosion-proof high-speed permanent magnet motor.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] An explosion-proof high-speed permanent magnet motor includes a housing, with end caps at both ends of the housing, bearings on each end cap, a shaft on each bearing, a lubrication mechanism on the shaft, and an explosion-proof mechanism on the end cap.

[0007] The lubrication mechanism includes a pressing block, and a return spring is provided on one side of the pressing block;

[0008] The end cap is equipped with an oil storage tank and an adjustment tank, which are connected to each other;

[0009] The bearing is equipped with an inflow channel;

[0010] The oil storage tank and the inflow channel are connected. The extrusion block is located in the oil storage tank. The regulating tank is equipped with a speed regulating unit and a temperature regulating unit. The speed regulating unit and the temperature regulating unit drive the extrusion block to move. The oil storage tank is filled with lubricating oil. The extrusion block squeezes the lubricating oil in the oil storage tank into the bearing to supplement lubrication.

[0011] The machine housing has end caps at both ends, which are fixed to the housing with screws. Each end cap houses a high-precision bearing to ensure dynamic balance and low friction during high-speed operation. The machine shaft is fixed to the inner rings of the two bearings, while the outer rings of the bearings are fixed to the end caps, allowing the shaft to rotate stably along its axis. A lubrication mechanism provides supplemental lubrication to the shaft. An oil reservoir filled with lubricating oil is located on the end caps, facilitating the replenishment of lubricating oil to the bearings. A pressing block divides the oil reservoir into two parts. A speed and temperature regulation unit adjusts the flow of regulating fluid from the regulating tank into the oil reservoir based on changes in the shaft's speed and temperature. This regulating fluid pushes the pressing block, causing the lubricating oil in the oil reservoir to flow into the bearing through the bearing's inflow channel. A return spring is located between the pressing block and the oil reservoir, with its ends fixed to the pressing block and the oil reservoir respectively. This allows the pressing block to return to its original position when the shaft's speed and temperature recover, thus providing supplemental lubrication to the bearings. An external pipe is connected to the oil reservoir for easy replenishment of lubricating oil. An explosion-proof mechanism enhances the motor's explosion-proof performance.

[0012] Furthermore, the speed adjustment unit includes an annular cover, the annular cover and the end cover are fixed, a fixed ring is provided on the machine shaft, a number of blades are provided on the fixed ring, the edges of the number of blades are located inside the annular cover, and an adjustment block is provided on the annular cover.

[0013] The annular cover has a through groove;

[0014] A preload spring is provided between the adjusting block and the adjusting groove;

[0015] When the motor speed increases: the machine shaft drives the blades to rotate faster, generating wind pressure to push the regulating block to slide. The regulating block squeezes the liquid in the regulating groove into the oil storage tank, pushing the squeezing block to move.

[0016] A fixed ring is provided on the shaft, and several blades are provided on the fixed ring. The blades are arc-shaped. An annular cover is provided on the end cover, which covers the outer part of the blades. The shaft drives the blades to rotate, causing the airflow to flow into the inner side of the annular cover. This causes the airflow to generate pressure on the inner side of the annular cover. When the motor speed increases, the shaft drives the blades to rotate faster, increasing the air pressure. This pushes the adjusting block to overcome the elastic force of the preload spring and slide, thereby squeezing the liquid in the adjusting groove into the oil storage tank and pushing the squeezing block to move. This causes the lubricating oil in the oil storage tank to flow into the bearing. A through groove is provided on the annular cover, allowing the airflow to flow out from the through groove and flow in from the bottom of the blades, forming a circulating airflow.

[0017] Furthermore, the temperature regulation unit includes a telescopic block, which is made of shape memory alloy and is M-shaped. The telescopic block is equipped with a heat-conducting block and several heat-conducting plates.

[0018] Several heat-conducting fins are distributed in a ring along the machine shaft axis;

[0019] When the shaft temperature rises: the telescopic block extends, pushing the liquid in the regulating tank into the oil storage tank and pushing the extrusion block to move.

[0020] Several heat-conducting fins are distributed in a ring along the outer side of the shaft to transfer the shaft's temperature to a heat-conducting block. The heat-conducting block then transfers the heat to an M-shaped telescopic block. The telescopic block is made of shape memory alloy. When the temperature rises, the telescopic block extends, reducing the volume of the regulating groove. This squeezes the regulating fluid in the regulating groove, causing it to flow into the oil reservoir and push the squeezing block to move. The bearings on the end caps on both sides of the shaft can adjust the lubrication of the bearings according to different temperatures, avoiding different lubrication on both sides of the bearings due to local temperature differences, which would lead to different friction and affect the stability of the shaft rotation.

[0021] Furthermore, a suction block is provided on one side of the extrusion block;

[0022] The bearing is equipped with a return channel, which is Y-shaped;

[0023] Two miniature check valves are installed on the reflux channel.

[0024] A return channel is provided at the bottom of the bearing. When the shaft speed decreases, some of the lubricating oil gathers downwards under the action of gravity. The extrusion block resets and drives the suction block to move, creating negative pressure in the return channel, thereby causing the lubricating oil to flow back. The return channel is set in a Y shape, with the branch of the Y-shaped return channel connected to the oil storage tank. A miniature one-way valve is installed at the main channel and one branch of the Y-shaped return channel. The other branch slides with the suction block, preventing the lubricating oil in the oil storage tank from flowing into the return channel and preventing the lubricating oil in the return channel from flowing back to the bearing. When the extrusion block works, the suction block moves accordingly and extrudes the liquid in the return channel, causing it to flow back into the oil storage tank along the miniature one-way valve connected to the oil storage tank.

[0025] Furthermore, the explosion-proof mechanism includes a sliding plate, a support spring on one side of the sliding plate, and a sound-absorbing plate at one end of the support spring;

[0026] The end cap is provided with a sliding groove;

[0027] The sliding plate and the sliding groove are slidably connected.

[0028] By setting an annular sliding groove on the end cover, when an explosion occurs inside the motor and the gas pressure rises, the gas pressure pushes the sliding plate to overcome the elastic force of the support spring, causing the sliding plate to slide into the sliding groove. This expands the internal volume of the motor, reduces the maximum gas pressure, avoids excessive pressure causing the explosion-proof surface to crack, and improves the explosion-proof effect. During normal operation, the vibration of internal noise of the motor is transmitted to the sound-absorbing plate through the sliding plate and the support spring, absorbing the noise and improving the noise reduction effect of the motor.

[0029] Furthermore, the bearing is equipped with a rotor and a balancing assembly, and a stator 8 is provided on the outside of the rotor;

[0030] The balancing assembly includes two dynamic balancing blocks, which are located on both sides of the rotor;

[0031] The stator has fixing plates on both sides;

[0032] The machine shaft is provided with a protrusion, a dynamic balancing block abuts against the protrusion, and a pressure plate is provided on one side of the other dynamic balancing block.

[0033] The dynamic balancing block and rotor are installed using the protrusions on the shaft as the positioning reference. The permanent magnet is embedded in the rotor core to prevent it from falling off during high-speed rotation and to reduce wind resistance. The rotor is fixed by a pressure plate. The stator is made of silicon steel sheets with a laminated iron core and three-phase windings, which reduces eddy current losses and optimizes the stability of the high-speed magnetic field. The stator is fixed by fixing plates on both sides. When the motor is working, three-phase AC current is applied to the stator windings to generate a rotating magnetic field. The rotating magnetic field of the stator interacts with the magnetic field of the permanent magnet on the rotor through the principle of attraction between opposite magnetic poles to generate electromagnetic torque, which drives the rotor to rotate at synchronous speed.

[0034] Furthermore, the housing includes an inner shell, an outer shell is provided outside the inner shell, a rear cover is provided on the outer shell, a cooling fan is provided on the rear cover, and a heat dissipation groove is provided on the inner shell.

[0035] The front and rear end covers are fixed by the inner shell, and an outer shell is provided outside the inner shell. The heat carried out by the inner shell is released by the grooves of the outer shell and carried away by the air, thereby improving the heat dissipation effect. The installation of the rear cover prevents accidental contact with the cooling fan, and the cooling fan generates cooling air to dissipate heat.

[0036] Furthermore, the inner shell is equipped with an explosion-proof sealing joint.

[0037] An explosion-proof sealing joint is provided on the inner shell for connecting the cable outlet, thereby preventing external dust from entering the motor.

[0038] Furthermore, a lifting ring is provided at the top of the inner shell, and a fixed base is provided at the bottom of the inner shell.

[0039] The motor can be lifted with ropes by a lifting ring at the top of the inner shell, which facilitates quick installation. The motor can be secured by a fixed base at the bottom of the inner shell.

[0040] Compared with the prior art, the beneficial effects of the present invention are:

[0041] 1. By setting up a lubrication mechanism, in conjunction with a speed regulation unit and a temperature regulation unit, the operating status of the machine shaft is monitored in real time. When the speed increases or the temperature rises, the extrusion block is automatically pushed to inject lubricating oil into the bearing for lubrication. When the state returns to normal, the return spring causes the extrusion block to retract and stop the oil supply. This avoids friction fire caused by insufficient lubrication of the bearing when the motor is running at high speed or the temperature rises. At the same time, it avoids excessive lubricating oil affecting the rotation of the bearing, reduces resistance, and thus reduces the consumption of electrical energy, achieving the effect of energy saving.

[0042] 2. By setting up a return channel to recover lubricating oil, the lubricating oil is recycled, which effectively reduces consumption and extends the maintenance cycle for adding lubricating oil.

[0043] 3. By setting up an explosion-proof mechanism, the internal volume of the motor can be instantly expanded when the air pressure increases, thereby reducing the pressure of the air and preventing the explosion-proof surface from cracking. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0045] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0046] Figure 3 yes Figure 2 A magnified view of part A;

[0047] Figure 4 This is a schematic diagram of the lubrication mechanism of the present invention;

[0048] Figure 5 yes Figure 2 A magnified view of part B;

[0049] Figure 6 yes Figure 2 A magnified view of a portion of C;

[0050] Figure 7 yes Figure 2 A magnified view of a portion of the image;

[0051] Figure 8 yes Figure 2 A magnified view of a portion of E.

[0052] In the diagram: 1. Housing; 11. Inner housing; 111. Heat dissipation groove; 12. Outer housing; 13. Rear cover; 14. Cooling fan; 15. Explosion-proof sealing joint; 16. Lifting ring; 17. Fixed base; 2. End cover; 21. Oil reservoir; 22. Adjustment groove; 23. Sliding groove; 3. Bearing; 31. Inflow channel; 32. Return channel; 4. Shaft; 41. Protrusion; 5. Lubrication mechanism; 51. Extrusion block; 52. Return spring; 53. Speed ​​adjustment unit; 531. Annular cover; 5311, through groove; 532, fixing ring; 533, blade; 534, adjusting block; 535, preload spring; 54, temperature regulating unit; 541, telescopic block; 542, heat-conducting block; 543, heat-conducting plate; 55, suction block; 56, miniature one-way valve; 6, explosion-proof mechanism; 61, sliding plate; 62, support spring; 63, silencer plate; 7, rotor; 8, stator; 9, balancing assembly; 91, dynamic balancing block; 92, pressure plate; 93, fixing plate. Detailed Implementation

[0053] Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0054] Example: Figures 1-4 As shown, the present invention provides a technical solution: an explosion-proof high-speed permanent magnet motor. The permanent magnet motor includes a housing 1, with end caps 2 at both ends of the housing 1. Each end cap 2 is provided with a bearing 3, and a shaft 4 is provided on the bearing 3. The shaft 4 is provided with a lubrication mechanism 5, and the end cap 2 is provided with an explosion-proof mechanism 6.

[0055] The lubrication mechanism 5 includes a pressing block 51, and a return spring 52 is provided on one side of the pressing block 51;

[0056] The end cap 2 is provided with an oil storage tank 21 and an adjusting tank 22, and the adjusting tank 22 and the oil storage tank 21 are connected.

[0057] Bearing 3 is provided with an inflow channel 31;

[0058] The oil storage tank 21 is connected to the inflow channel 31. The extrusion block 51 is located in the oil storage tank 21. The regulating tank 22 is equipped with a speed regulating unit 53 and a temperature regulating unit 54. The speed regulating unit 53 and the temperature regulating unit 54 drive the extrusion block 51 to move. The oil storage tank 21 is filled with lubricating oil. The extrusion block 51 squeezes the lubricating oil in the oil storage tank 21 into the bearing 3 to supplement lubrication.

[0059] The machine housing 1 has end caps 2 at both ends, which are fixed to the machine housing 1 with screws. Bearings 3, made of high precision, are mounted on the end caps 2 to ensure dynamic balance and low friction during high-speed operation. The machine shaft 4 is fixed to the inner rings of the two bearings 3, and the outer rings of the bearings 3 are fixed to the end caps 2, allowing the machine shaft 4 to rotate stably along the axis. A lubrication mechanism 5 is provided to supplement lubrication to the machine shaft 4. An oil reservoir 21, filled with lubricating oil, is provided on the end caps 2 for easy replenishment of lubricating oil to the bearings 3. The oil reservoir 21 is divided into two parts by a pressing block 51. The speed adjustment unit 53 and the temperature adjustment unit 54 adjust the lubrication according to the machine's rotation speed. When the rotational speed and temperature of shaft 4 change, the regulating fluid in regulating groove 22 flows into oil storage tank 21, thereby causing the regulating fluid to push the extrusion block 51 to move. This allows the lubricating oil in oil storage tank 21 to flow into the bearing 3 through the inflow channel 31 of bearing 3. A return spring 52 is provided between extrusion block 51 and oil storage tank 21. The two ends of return spring 52 are fixed to extrusion block 51 and oil storage tank 21 respectively, so that extrusion block 51 can be reset when the rotational speed and temperature of shaft 4 recover, thereby replenishing lubrication to bearing 3. By setting a pipe connecting to the outside on oil storage tank 21, it is convenient to replenish lubricating oil at any time. The explosion-proof mechanism 6 is set to enhance the explosion-proof effect of motor.

[0060] like Figure 2 and Figure 3 As shown, the speed adjustment unit 53 includes an annular cover 531, which is fixed to the end cover 2. A fixing ring 532 is provided on the machine shaft 4. Several blades 533 are provided on the fixing ring 532. The edges of the blades 533 are located inside the annular cover 531. An adjustment block 534 is provided on the annular cover 531.

[0061] The annular cover 531 is provided with a through groove 5311;

[0062] A preload spring 535 is provided between the adjusting block 534 and the adjusting groove 22;

[0063] When the motor speed increases: the machine shaft 4 drives the blades 533 to rotate faster, generating wind pressure to push the adjusting block 534 to slide. The adjusting block 534 squeezes the liquid in the adjusting groove 22 into the oil storage tank 21, pushing the squeezing block 51 to move.

[0064] A fixed ring 532 is provided on the shaft 4, and several blades 533 are provided on the fixed ring 532. The blades 533 are arc-shaped. An annular cover 531 is provided on the end cover 2. The annular cover 531 covers the outer part of the blades 533. The shaft 4 drives the blades 533 to rotate, so that the airflow flows to the inside of the annular cover 531, thereby generating pressure on the inside of the annular cover 531. When the motor speed increases, the shaft 4 drives the blades 533 to rotate faster, which increases the air pressure. This pushes the adjusting block 534 to overcome the elastic force of the pre-tightening spring 535 and slides, thereby squeezing the liquid in the adjusting groove 22 into the oil storage tank 21 and pushing the squeezing block 51 to move, so that the lubricating oil in the oil storage tank 21 flows into the bearing 3. A through groove 5311 is provided on the annular cover 531, so that the airflow flows out from the through groove 5311 and flows in from the bottom of the blades 533, forming a circulating airflow.

[0065] like Figure 2 and Figure 3 As shown, the temperature regulation unit 54 includes a telescopic block 541, which is made of shape memory alloy material and is M-shaped. A heat-conducting block 542 is provided on the telescopic block 541, and a plurality of heat-conducting sheets 543 are provided on the heat-conducting block 542.

[0066] Several heat-conducting plates 543 are distributed in a ring along the axis of machine shaft 4;

[0067] When the temperature of the shaft 4 rises: the telescopic block 541 extends and pushes the liquid in the regulating groove 22 into the oil storage tank 21, which in turn pushes the extrusion block 51 to move.

[0068] Several heat-conducting plates 543 are distributed in a ring along the outer side of the shaft 4 to transfer the temperature of the shaft 4 to the heat-conducting block 542. The heat-conducting block 542 transfers the heat to the M-shaped telescopic block 541. The telescopic block 541 is made of shape memory alloy material. When the temperature rises, the telescopic block 541 extends, reducing the volume of the regulating groove 22, thereby squeezing the regulating fluid in the regulating groove 22 and causing it to flow into the oil storage tank 21 to push the squeezing block 51 to move. The bearings 3 on the end caps 2 on both sides of the shaft 4 can adjust the lubrication of the bearings 3 according to different temperatures, avoiding different lubrication of the bearings 3 on both sides due to different local temperatures, which would lead to different friction and affect the stability of the rotation of the shaft 4.

[0069] like Figure 5 As shown, a suction block 55 is provided on one side of the extrusion block 51;

[0070] Bearing 3 is provided with a return channel 32, which is Y-shaped;

[0071] Two miniature check valves 56 are provided on the return channel 32.

[0072] A return channel 32 is provided at the bottom of the bearing 3. When the speed of the machine shaft 4 decreases, some of the lubricating oil gathers downward under the action of gravity. The extrusion block 51 resets and drives the suction block 55 to move, so that negative pressure is generated in the return channel 32, thereby causing the lubricating oil to flow back. The return channel 32 is set as Y-shaped. The branch of the Y-shaped return channel 32 is connected to the oil storage tank 21. A miniature one-way valve 56 is set at the main channel and one branch of the Y-shaped return channel 32. The other branch slides with the suction block 55, so that the lubricating oil in the oil storage tank 21 cannot flow into the return channel 32, and the lubricating oil in the return channel 32 is prevented from flowing back to the bearing 3. When the extrusion block 51 works, the suction block 55 moves accordingly and extrudes the liquid in the return channel 32, so that it flows back to the oil storage tank 21 along the miniature one-way valve 56 connected to the oil storage tank 21.

[0073] like Figure 6 As shown, the explosion-proof mechanism 6 includes a sliding plate 61, a support spring 62 on one side of the sliding plate 61, and a sound-absorbing plate 63 at one end of the support spring 62.

[0074] End cap 2 is provided with sliding groove 23;

[0075] The sliding plate 61 and the sliding groove 23 are slidably connected.

[0076] By setting an annular sliding groove 23 on the end cover 2, when an explosion occurs inside the motor and the gas pressure rises, the gas pressure pushes the sliding plate 61 to overcome the elastic force of the support spring 62, causing the sliding plate 61 to slide into the sliding groove 23, thereby expanding the internal volume of the motor, reducing the maximum value of the gas pressure, avoiding excessive pressure that could cause the explosion-proof surface to crack, and improving the explosion-proof effect. During normal operation, the vibration of internal noise of the motor is transmitted to the sound-absorbing plate 63 through the sliding plate 61 and the support spring 62, absorbing the noise and improving the noise reduction effect of the motor.

[0077] like Figure 7 and Figure 8 As shown, the bearing 3 is provided with a rotor 7 and a balancing assembly 9, and the rotor 7 is provided with a stator 8 on its outer side;

[0078] The balancing assembly 9 includes two dynamic balancing blocks 91, which are located on both sides of the rotor 7;

[0079] The stator 8 has fixing plates 93 on both sides;

[0080] The machine shaft 4 is provided with a protrusion 41, a dynamic balancing block 91 abuts against the protrusion 41, and a pressure plate 92 is provided on one side of the other dynamic balancing block 91.

[0081] Using the protrusion 41 on the shaft 4 as the positioning reference for installation, the dynamic balance block 91 and the rotor 7 are installed. The permanent magnet is embedded in the iron core of the rotor 7 to prevent the permanent magnet from falling off during high-speed rotation and to reduce wind resistance. The rotor 7 is fixed by the pressure plate 92. The stator 8, which is composed of silicon steel sheet laminated iron core and three-phase windings, is used on the outside of the rotor 7 to reduce eddy current loss and optimize the stability of the high-speed magnetic field. The stator 8 is fixed by the fixing plates 93 on both sides. When the motor is working, three-phase AC current is passed through the windings of the stator 8 to generate a rotating magnetic field. The rotating magnetic field of the stator 8 and the magnetic field of the permanent magnet on the rotor 7 interact through the principle of attraction between opposite magnetic poles to generate electromagnetic torque, which drives the rotor 7 to rotate at synchronous speed.

[0082] like Figure 1 and Figure 2 As shown, the housing 1 includes an inner housing 11, an outer housing 12 is provided outside the inner housing 11, a rear cover 13 is provided on the outer housing 12, a cooling fan 14 is provided on the rear cover 13, and a heat dissipation groove 111 is provided on the inner housing 11.

[0083] The front and rear end covers 2 are fixed by the inner shell 11. An outer shell 12 is provided outside the inner shell 11. The heat carried out by the inner shell 11 is released in the groove of the outer shell 12 and carried away by the air, thereby improving the heat dissipation effect. The rear cover 13 is installed to prevent accidental contact with the cooling fan 14. The cooling fan 14 generates cooling air to dissipate heat.

[0084] like Figure 1 As shown, the inner shell 11 is provided with an explosion-proof sealing joint 15.

[0085] An explosion-proof sealing joint 15 is provided on the inner shell 11 for connecting the cable outlet, thereby preventing external dust from entering the motor.

[0086] like Figure 1 As shown, the inner shell 11 has a lifting ring 16 on the upper part and a fixed base 17 on the bottom.

[0087] The motor can be lifted by rope by a lifting ring 16 on the upper part of the inner shell 11, which facilitates quick installation of the motor. The motor can be fixed by a fixed base 17 at the bottom of the inner shell 11.

[0088] The working principle of this invention: When the motor is working, three-phase alternating current is applied to the stator winding 8, generating a rotating magnetic field and electromagnetic torque, which drives the rotor 7 to rotate at a synchronous speed. This rotation, via the shaft 4, drives the blades 533 to rotate, causing airflow to flow towards the inside of the annular cover 531. This airflow exerts pressure on the inside of the annular cover 531, pushing the adjusting block 534 to overcome the elastic force of the preload spring 535 and slide. This, in turn, forces the liquid in the adjusting groove 22 into the oil storage tank 21 and pushes the squeezing block 51 to move. Consequently, the lubricating oil in the oil storage tank 21 flows into the bearing 3 through the inflow channel 31. When the temperature rises... The temperature of the shaft 4 is transferred to the M-shaped telescopic block 541 through the heat-conducting block 542. The telescopic block 541 extends, thereby squeezing the regulating fluid in the regulating groove 22 and causing it to flow into the oil storage tank 21, pushing the squeezing block 51 to move. This causes the lubricating oil in the oil storage tank 21 to flow into the bearing 3 through the inflow channel 31 of the bearing 3. When the speed of the shaft 4 decreases or the temperature drops, some of the lubricating oil gathers downward under the action of gravity. The squeezing block 51 resets and drives the suction block 55 to move, creating a negative pressure in the return channel 32, thereby causing the lubricating oil to flow back into the oil storage tank 21, thus realizing the recovery of lubricating oil.

[0089] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An explosion-proof high-speed permanent magnet motor, characterized in that: The permanent magnet motor includes a housing (1), with end caps (2) at both ends of the housing (1), bearings (3) on each end cap (2), a shaft (4) on each bearing (3), a lubrication mechanism (5) on the shaft (4), and an explosion-proof mechanism (6) on the end cap (2). The lubrication mechanism (5) includes a pressing block (51), and a return spring (52) is provided on one side of the pressing block (51). The end cap (2) is provided with an oil storage tank (21) and an adjustment tank (22), and the adjustment tank (22) and the oil storage tank (21) are connected. The bearing (3) is provided with an inflow channel (31); The oil storage tank (21) and the inflow channel (31) are connected. The extrusion block (51) is located in the oil storage tank (21). The regulating tank (22) is equipped with a speed regulating unit (53) and a temperature regulating unit (54). The speed regulating unit (53) and the temperature regulating unit (54) drive the extrusion block (51) to move. The oil storage tank (21) is filled with lubricating oil. The extrusion block (51) squeezes the lubricating oil in the oil storage tank (21) into the bearing (3) to supplement lubrication. The speed adjustment unit (53) includes an annular cover (531), the annular cover (531) and the end cover (2) are fixed, the machine shaft (4) is provided with a fixing ring (532), the fixing ring (532) is provided with a plurality of blades (533), the edges of the plurality of blades (533) are located inside the annular cover (531), and the annular cover (531) is provided with an adjustment block (534). The annular cover (531) is provided with a through groove (5311); A preload spring (535) is provided between the adjusting block (534) and the adjusting groove (22); When the motor speed increases: the machine shaft (4) drives the blades (533) to rotate faster, forming wind pressure to push the regulating block (534) to slide, and the regulating block (534) squeezes the liquid in the regulating groove (22) into the oil storage tank (21) to push the squeezing block (51) to move; The temperature regulation unit (54) includes a telescopic block (541), which is made of shape memory alloy material and is M-shaped. A heat-conducting block (542) is provided on the telescopic block (541), and a plurality of heat-conducting sheets (543) are provided on the heat-conducting block (542). Several of the aforementioned heat-conducting plates (543) are distributed in a ring along the axis of the machine shaft (4); When the temperature of the shaft (4) rises: the telescopic block (541) extends and pushes the liquid in the regulating groove (22) into the oil storage tank (21), which in turn pushes the extrusion block (51) to move.

2. The explosion-proof high-speed permanent magnet motor according to claim 1, characterized in that: A suction block (55) is provided on one side of the extrusion block (51); The bearing (3) is provided with a return channel (32), which is Y-shaped; Two miniature check valves (56) are provided on the return channel (32).

3. The explosion-proof high-speed permanent magnet motor according to claim 1, characterized in that: The explosion-proof mechanism (6) includes a sliding plate (61), a support spring (62) is provided on one side of the sliding plate (61), and a sound-absorbing plate (63) is provided at one end of the support spring (62). The end cap (2) is provided with a sliding groove (23); The sliding plate (61) and the sliding groove (23) are slidably connected.

4. The explosion-proof high-speed permanent magnet motor according to claim 1, characterized in that: The bearing (3) is provided with a rotor (7) and a balancing assembly (9), and a stator (8) is provided on the outside of the rotor (7); The balancing assembly (9) includes two dynamic balancing blocks (91), which are located on both sides of the rotor (7); The stator (8) is provided with fixing plates (93) on both sides; The machine shaft (4) is provided with a protrusion (41), one of the dynamic balance blocks (91) abuts against the protrusion (41), and another dynamic balance block (91) is provided with a pressure plate (92) on one side.

5. The explosion-proof high-speed permanent magnet motor according to claim 1, characterized in that: The housing (1) includes an inner shell (11), an outer shell (12) is provided outside the inner shell (11), a rear cover (13) is provided on the outer shell (12), a cooling fan (14) is provided on the rear cover (13), and a heat dissipation groove (111) is provided on the inner shell (11).

6. The explosion-proof high-speed permanent magnet motor according to claim 5, characterized in that: The inner shell (11) is provided with an explosion-proof sealing joint (15).

7. The explosion-proof high-speed permanent magnet motor according to claim 6, characterized in that: The inner shell (11) is provided with a lifting ring (16) at the top and a fixed base (17) at the bottom.

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