Oil-cooling heat dissipation permanent magnet speed regulator

Abstract

The invention relates to the technical field of permanent magnet speed regulators, and discloses an oil cooling heat dissipation permanent magnet speed regulator which comprises a speed regulator body, a shell connected to the outer side of the speed regulator body, a conductor disc and a permanent magnet disc, the conductor disc and the permanent magnet disc are installed in the shell, a through hole is formed in the top of the shell, and a top shell is fixedly installed in the through hole. According to the oil cooling heat dissipation permanent magnet speed regulator, through mutual cooperation of the top shell, the first detection rod, the second detection rod, the first arc-shaped block and the second arc-shaped block, the first arc-shaped block and the second arc-shaped block abut against the outer wall of the conductor disc and the outer wall of the permanent magnet disc, a calibration mark is utilized, the top face of the top shell serves as the reference, and the position of the calibration mark is moved; a worker can find that the positions of the conductor disc and the permanent magnet disc change with the original standard value, then the centering change of the conductor disc and the permanent magnet disc is detected, the coaxiality change of the conductor disc and the permanent magnet disc can be rapidly detected before the equipment is started, then the maintenance action is carried out in advance, and abrasion aggravation caused by direct starting is prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of permanent magnet speed regulators, and specifically to an oil-cooled permanent magnet speed regulator. Background Art

[0002] A permanent magnet speed regulator is a mechanical speed regulating device based on the principle of magnetic field interaction between permanent magnets and conductors. It realizes stepless control of torque transmission and load speed by adjusting the air gap, and has the characteristics of high efficiency, energy saving, strong reliability, and adaptability to harsh environments.

[0003] For example, a patent with the patent publication number CN119134840A discloses an internal circulation oil-cooled high-power permanent magnet speed regulator, which relates to the technical field of permanent magnet speed regulators. It includes an oil tank, on which a speed regulator housing is fixedly installed. An input shaft and an output shaft are respectively arranged at both ends of the speed regulator housing. The input shaft is connected with a conductor rotor, and the output shaft is connected with a permanent magnet rotor. A pump oil assembly is arranged between the oil tank and the side wall of the speed regulator housing. A heat dissipation mechanism is arranged circumferentially on the speed regulator housing. An adjustment box is arranged at one end of the speed regulator housing facing the input shaft. A distance adjustment mechanism is arranged between the adjustment box and the input shaft. The heat dissipation mechanism includes heat dissipation fins and a spray pipe. A follower assembly is arranged between the spray pipe and the conductor rotor. Through the follower assembly, the spray pipe can stably and reliably spray and cool the permanent magnet rotor before and after the conductor rotor adjusts the gap, ensuring the cooling effect.

[0004] Although the above device solves the problem of spray cooling, there are still the following defects: during the operation of the permanent magnet speed regulator, the permanent magnet disk is located between the conductor disks, and an air gap plate is arranged outside the conductor disks. Due to the eddy current effect, the conductor disks may generate thermal stress and deform. This phenomenon will lead to uneven air gaps between the conductor disks and the permanent magnet disks after long-term accumulation, further exacerbating the concentricity problem. At the same time, due to the long-term bearing of alternating loads by the bearings, the coaxiality of their inner and outer rings will gradually decrease, which directly affects the neutrality between the conductor disks and the permanent magnet disks. Once the air gap changes or the neutrality deviates, unnecessary friction will occur between the conductor disks and the permanent magnet disks, thereby accelerating the wear of both. Although these situations may lead to a local temperature rise or a change in the load speed connected to the permanent magnet disk, these problems are often difficult to detect in time. Even if detected, the friction has already occurred. Therefore, the existing permanent magnet speed regulators lack a mechanism for detecting the neutrality between the conductor disks and the permanent magnet disks before startup or after shutdown, resulting in increased wear. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides an oil-cooled permanent magnet speed regulator to solve the problems raised in the background art, making it convenient to quickly detect changes in the neutrality between the conductor disk and the permanent magnet disk before the device starts up or shuts down, and effectively preventing increased wear caused by directly starting the machine.

[0006] To achieve the above object, the present invention provides the following technical solution: an oil-cooled permanent magnet speed regulator, comprising a speed regulator body, a housing connected to the outside of the speed regulator body, a conductor disk and a permanent magnet disk installed in the housing. A through hole is opened at the top of the housing, and a top shell is fixedly installed in the through hole. The top shell is provided with an open bottom. A first detection rod and a second detection rod are slidably connected to the top of the top shell. A first arc-shaped block is fixedly connected to the bottom surface of the first detection rod, and the bottom surface of the first arc-shaped block abuts against the outer wall of the conductor disk. A second arc-shaped block is fixedly connected to the bottom surface of the second detection rod, and the bottom surface of the second arc-shaped block abuts against the outer wall of the permanent magnet disk. Calibration marks are fixedly connected to the outer walls of the first detection rod and the second detection rod. A top plate is fixedly connected to the top of the first detection rod, and the second detection rod is slidably connected to the first detection rod.

[0007] Further, a chute communicating with the outside is opened in the first detection rod, a sliding plate is slidably connected in the chute, the other end of the sliding plate is fixedly connected with a cross bar, and the cross bar is fixedly connected with the top surface of the second detection rod.

[0008] Further, a back plate is fixedly connected to the outer wall of the top shell, a plug rod is slidably connected to the back plate, a side block is fixedly connected to the outer wall of the first detection rod, the plug rod passes through the back plate and is inserted into the side block, and a pressing plate is fixedly connected to the end of the side block located outside the back plate. A tension spring is fixedly connected to the inner wall of the pressing plate, and the other end of the tension spring abuts against the outer wall of the back plate.

[0009] Further, an outer plate is fixedly connected to the outer wall of the top shell at one end located inside the housing, and a sealing plate is hinged to the outer end of the opening of the top shell through a torsion spring.

[0010] Further, a toothed ring is fixedly installed on the side of the conductor disk away from the permanent magnet disk through a fastening bolt. A gear is rotatably connected to the outer wall of the first detection rod away from the second detection rod. A rotating shaft is fixedly connected to the outer wall of the gear. A coil spring is sleeved on the outside of the rotating shaft. The outer end of the coil spring is fixedly connected with a wound winding rope. An installation cylinder is sleeved on the outside of the rotating shaft. The rotating shaft, the coil spring and the winding rope are located inside the installation cylinder. A sliding rod is fixedly connected to the outer wall of the installation cylinder. The top of the sliding rod passes through the top shell and is slidably connected thereto. The outer end of the winding rope located inside the installation cylinder passes through the installation cylinder, the sliding rod and the top plate, and is fixedly connected with a pull ring.

[0011] Further, air channels are opened in the first detection rod and the second detection rod. A U-shaped pipe is fixedly connected to the top surface of the top plate. The U-shaped pipe is communicated with a high-pressure gas generator outside. The U-shaped pipe passes through the top plate and is communicated with the air channels in the first detection rod and the second detection rod. Ventilation holes are opened at the bottoms of the first arc-shaped block and the second arc-shaped block. The air channels are communicated with the ventilation holes.

[0012] Further, the cross-sections of the sliding plate and the sliding groove are L-shaped.

[0013] Further, one end of the insertion rod located inside the side block is chamfered.

[0014] Compared with the prior art, the present invention has the following beneficial effects: In this oil-cooled permanent magnet speed regulator, through the mutual cooperation of the top shell, the first detection rod, the second detection rod, the first arc-shaped block, and the second arc-shaped block, the first arc-shaped block and the second arc-shaped block are abutted against the outer walls of the conductor disk and the permanent magnet disk. By using the calibration mark and taking the top surface of the top shell as the reference, when the position of the calibration mark moves, workers can find that the positions of the conductor disk and the permanent magnet disk have changed from the original standard values, and further detect that the coaxiality between the two has changed. The coaxiality change of the conductor disk and the permanent magnet disk can be quickly detected before the equipment starts, and then maintenance actions can be carried out in advance to prevent direct startup from aggravating wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structural schematic diagram of the whole of the present invention; Figure 2 is a three-dimensional structural schematic diagram of another state of the whole of the present invention; Figure 3 is a three-dimensional sectional structural schematic diagram of the speed regulator housing of the present invention; Figure 4 is a three-dimensional structural schematic diagram of the conductor disk, the permanent magnet disk and the detection rod of the present invention; Figure 5 is a three-dimensional structural schematic diagram of a partial state of the gear ring of the present invention; Figure 6 is a three-dimensional sectional structural schematic diagram of the first detection rod and the air duct of the present invention; Figure 7 is a three-dimensional sectional structural schematic diagram of the back plate of the present invention; Figure 8 is a three-dimensional sectional structural schematic diagram of the second arc-shaped block of the present invention; Figure 9 is a three-dimensional structural schematic diagram of the coil spring, the winding rope and the rotating shaft of the present invention.

[0016] In the figure: 1. Housing; 2. Top shell; 3. Back plate; 4. First detection rod; 5. Second detection rod; 6. Top plate; 7. Pipeline; 8. Conductor disk; 9. Permanent magnet disk; 10. Gear ring; 11. Cross bar; 12. Pulling ring; 13. Insertion rod; 14. Sealing plate; 15. Gear; 16. Slide bar; 17. Winding rope; 18. Calibration mark; 19. Side block; 20. Outer plate; 21. Installation cylinder; 22. First arc-shaped block; 23. Second arc-shaped block; 24. Sliding groove; 25. Sliding plate; 26. Bracing plate; 27. Tension spring; 28. Air duct; 29. Ventilation hole; 30. Rotating shaft; 31. Coil spring. Detailed implementation mode

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0018] Please refer to Figures 1-9 , an oil-cooled permanent magnet speed regulator, including a speed regulator body, a housing 1 connected to the outside of the speed regulator body, a conductor disk 8 and a permanent magnet disk 9 installed in the housing 1. A through hole is opened at the top of the housing 1, and a top shell 2 is fixedly installed in the through hole. The top shell 2 is provided with an open bottom. A first detection rod 4 and a second detection rod 5 are slidably connected to the top of the top shell 2. A first arc-shaped block 22 is fixedly connected to the bottom surface of the first detection rod 4, and the bottom surface of the first arc-shaped block 22 abuts against the outer wall of the conductor disk 8. A second arc-shaped block 23 is fixedly connected to the bottom surface of the second detection rod 5, and the bottom surface of the second arc-shaped block 23 abuts against the outer wall of the permanent magnet disk 9. Calibration marks 18 are fixedly connected to the outer walls of the first detection rod 4 and the second detection rod 5. A top plate 6 is fixedly connected to the top of the first detection rod 4, and the second detection rod 5 is slidably connected to the first detection rod 4.

[0019] In the oil-cooled permanent magnet speed regulator of the present invention, before the speed regulator body is started, the top plate 6 can be pulled, so that the top plate 6 drives the first detection rod 4 to descend in the top shell 2, and at the same time drives the second detection rod 5 to also descend from the top shell 2. The first detection rod 4 drives the first arc-shaped block 22, and the second detection rod 5 drives the second arc-shaped block 23 to descend from the top shell 2. Since the first detection rod 4 and the second detection rod 5 correspond to the outer wall positions of the conductor disk 8 and the permanent magnet disk 9 respectively after descending, therefore, the first arc-shaped block 22 and the second arc-shaped block 23 will respectively fit with the outer walls of the conductor disk 8 and the permanent magnet disk 9. As the first detection rod 4 and the second detection rod 5 descend in the top shell 2, the calibration marks 18 on their outer walls can be moved. Taking the top surface of the top shell 2 as a reference, the position movement of the calibration marks 18 can enable workers to find that the positions of the conductor disk 8 and the permanent magnet disk 9 have changed from the original standard values, and further can detect whether the conductor disk 8 and the permanent magnet disk 9 are worn and decreased, and further detect that the coaxiality between the two has changed. Before the equipment is started, it can quickly detect whether the coaxiality of the conductor disk 8 and the permanent magnet disk 9 has changed, and then perform maintenance operations in advance to prevent direct startup from aggravating wear; The height of the calibration mark 18 can be the allowable range value of the centering between the conductor disk 8 and the permanent magnet disk 9, that is, the calibration mark 18 covers half, the bottom line and is completely covered by the top surface of the top shell 2, and this is used as a judgment to facilitate workers to quickly judge the centering of the conductor disk 8 and the permanent magnet disk 9; Meanwhile, when the equipment stops after the work is completed, the first detection rod 4 and the second detection rod 5 can also be operated, so that the first arc-shaped block 22 and the second arc-shaped block 23 perform detection, and it can be detected whether the conductor disk 8 and the permanent magnet disk 9 need to be centered and adjusted after the equipment finishes working.

[0020] As a preferred technical solution of the present invention, a chute 24 communicating with the outside is opened in the first detection rod 4, a sliding plate 25 is slidably connected in the chute 24, the other end of the sliding plate 25 is fixedly connected with a cross bar 11, and the cross bar 11 is fixedly connected with the top surface of the second detection rod 5.

[0021] Specifically, since there is a height difference between the conductor disk 8 and the permanent magnet disk 9, when the first detection rod 4 descends, the second detection rod 5 follows the first detection rod 4 to descend. After the first arc-shaped block 22 at the bottom of the first detection rod 4 abuts against the outer wall of the conductor disk 8, the second detection rod 5 continues to descend, driving the sliding plate 25 and the cross bar 11 to move, so that the sliding plate 25 moves up and down in the chute 24, which can ensure that the second detection rod 5 smoothly abuts against the outer wall of the permanent magnet disk 9 to realize the position detection of the permanent magnet disk 9.

[0022] As a preferred technical solution of the present invention, a back plate 3 is fixedly connected to the outer wall of the top shell 2, a plug rod 13 is slidably connected to the back plate 3, a side block 19 is fixedly connected to the outer wall of the first detection rod 4, the plug rod 13 passes through the back plate 3 and is inserted into the side block 19, and a pressing plate 26 is fixedly connected to the end of the side block 19 located outside the back plate 3, and a tension spring 27 is fixedly connected to the inner wall of the pressing plate 26, and the other end of the tension spring 27 abuts against the outer wall of the back plate 3.

[0023] Specifically, in order to enable the first detection rod 4 and the second detection rod 5 to be received and fixed after sliding up in the top shell 2, after the first detection rod 4 slides up, the pressing plate 26 can be pulled to drive the tension spring 27 to stretch, drive the plug rod 13 to slide with the back plate 3, and make the plug rod 13 inserted into the side block 19 on the outer wall of the first detection rod 4, so that the position of the first detection rod 4 after rising can be fixed; Since the second detection rod 5 slides with the first detection rod 4 through the sliding plate 25, after the first detection rod 4 is fixed, the second detection rod 5 also rises, so that neither the first detection rod 4 nor the second detection rod 5 will affect the normal rotation of the conductor disk 8 and the permanent magnet disk 9.

[0024] As a preferred technical solution of the present invention, an outer plate 20 is fixedly connected to the outer wall of one end of the top shell 2 located in the housing 1, and a sealing plate 14 is hinged at the outer end of the opening of the top shell 2 through a torsion spring.

[0025] Specifically, in order to prevent the centrifugal force generated by the rotation of the conductor disk 8 and the permanent magnet disk 9 from causing the cooling oil to contaminate the first arc-shaped block 22 and the second arc-shaped block 23 inside the top shell 2, after the first detection rod 4 drives the first arc-shaped block 22 and the second detection rod 5 drives the second arc-shaped block 23 to rise, the sealing plate 14 is hinged to the bottom surface of the top shell 2 through a torsion spring to play a protective role; When the first detection rod 4 drives the first arc-shaped block 22 and the second detection rod 5 drives the second arc-shaped block 23 to descend, the hinged sealing plate 14 is pushed open by the extrusion force, so as to ensure that the first detection rod 4 and the second detection rod 5 can descend smoothly; Due to the action of the torsion spring, the sealing plate 14 will always press against the outside. As the first detection rod 4 and the second detection rod 5 retract, the sealing plate 14 automatically turns back to seal the bottom surface of the top shell 2 for protection.

[0026] As a preferred technical solution of the present invention, a toothed ring 10 is fixedly installed on the side of the conductor disk 8 away from the permanent magnet disk 9 through a fastening bolt. A gear 15 is rotatably connected to the outer wall of the first detection rod 4 away from the second detection rod 5. A rotating shaft 30 is fixedly connected to the outer wall of the gear 15. A coil spring 31 is sleeved on the outside of the rotating shaft 30. The outer end of the coil spring 31 is fixedly connected to a wound winding rope 17. An installation cylinder 21 is sleeved on the outside of the rotating shaft 30. The rotating shaft 30, the coil spring 31, and the winding rope 17 are located inside the installation cylinder 21. A sliding rod 16 is fixedly connected to the outer wall of the installation cylinder 21. The top of the sliding rod 16 passes through the top shell 2 and is slidably connected thereto. The outer end of the winding rope 17 located inside the installation cylinder 21 passes through the installation cylinder 21, the sliding rod 16, and the top plate 6, and is fixedly connected to a pull ring 12.

[0027] Specifically, since an air gap plate is provided on the outside of the conductor disk 8, when the first detection rod 4 drives the first arc-shaped block 22 and the second detection rod 5 drives the second arc-shaped block 23 to descend, the first arc-shaped block 22 and the second arc-shaped block 23 cannot smoothly abut against the outer walls of the conductor disk 8 and the permanent magnet disk 9; At this time, when the first detection rod 4 descends, it drives the gear 15 to descend. The gear 15 drives the rotating shaft 30, the coil spring 31, and the winding rope 17 to descend simultaneously. And the installation cylinder 21 is sleeved on the outside of the rotating shaft 30. Therefore, when the rotating shaft 30 descends, it will also drive the installation cylinder 21 and the sliding rod 16 to descend; When the gear 15 descends and contacts the toothed ring 10 on the outer wall of the conductor disk 8, the teeth of the gear 15 may not be able to just mesh with the teeth of the toothed ring 10. At this time, the pull ring 12 can be pulled to drive the winding rope 17 to slide in the sliding rod 16, so that the winding rope 17 is released inside the installation cylinder 21 and the coil spring 31 is compressed, driving the rotating shaft 30 to rotate. The rotating shaft 30 drives the gear 15 and the first detection rod 4 to rotate; Since the calibration mark 18 has a certain height, if the heights of the two detection rods are quite different after descending, the worker can quickly identify the position error, that is, the arc-shaped block does not avoid the air gap plate but is on the top surface of the air gap plate; At this time, the first detection rod 4 can be repeatedly pulled up and down, and at the same time, the rotation of the gear 15 is driven by the pulling of the winding rope 17, so that the gear 15 can be engaged with the toothed ring 10, and the meshing angle of the gear 15 can be adjusted. In this way, the first arc-shaped block 22 at the bottom of the first detection rod 4 can smoothly avoid the air gap plate outside the conductor disk 8, and the first arc-shaped block 22 can abut against the outer wall of the conductor disk 8; After the first detection rod 4 drives the first arc-shaped block 22 to abut smoothly, the second detection rod 5 can also smoothly avoid the air gap plate and enter from between two adjacent air gap plates, so that the second arc-shaped block 23 abuts against the outer wall of the permanent magnetic disk 9.

[0028] It should be noted that the coil spring 31 here can be designed as a high-torque spring, and the acting force is amplified through the meshing transmission ratio of the gear 15 and the toothed ring 10. The pre-tightening force and material strength of the coil spring 31 need to match the high-power requirements to ensure that when the winding rope 17 is pulled, enough torque can be generated to drive the rotation of the gear 15, so as to adjust the position of the detection rod. The module and number of teeth of the gear 15 also need to be adapted to improve the transmission efficiency.

[0029] As a preferred technical solution of the present invention, air channels 28 are provided in the first detection rod 4 and the second detection rod 5. The top surface of the top plate 6 is fixedly connected with a U-shaped pipe 7. The U-shaped pipe 7 is communicated with an external high-pressure gas generator. The U-shaped pipe 7 passes through the top plate 6 and is communicated with the air channels 28 in the first detection rod 4 and the second detection rod 5. Vent holes 29 are provided at the bottoms of the first arc-shaped block 22 and the second arc-shaped block 23, and the air channels 28 are communicated with the vent holes 29.

[0030] Specifically, since there will be cooling oil spraying between the conductor disk 8 and the permanent magnetic disk 9 during operation, there will be oil accumulation impurities on the outer walls of the conductor disk 8 and the permanent magnetic disk 9. If they are not cleaned and directly abutted and wiped, the detection accuracy will be reduced; Therefore, after the first detection rod 4 and the second detection rod 5 descend, an external high-pressure gas generator can be started to make the U-shaped pipe 7 introduce high-pressure gas. The high-pressure gas enters the top plate 6 through the U-shaped pipe 7, and then enters the first detection rod 4 and the second detection rod 5, and is discharged through the vent holes 29 at the bottoms of the first arc-shaped block 22 and the second arc-shaped block 23, and continuously blows the position to be detected. The high-pressure gas can smoothly remove the oil accumulation impurities.

[0031] It should be noted that the first detection rod 4 and the top plate 6 should be of an integrally formed structure, and the air channel 28 is a hermetically formed closed cavity, which is set to prevent air leakage; the connection between the U-shaped pipe 7 and the second detection rod 5 and the top of the top plate 6 should be a sealed connection, such as a welded, threaded hard seal or O-ring and other sealing structures; Meanwhile, the first detection rod 4 and the first arc-shaped block 22, and the second detection rod 5 and the second arc-shaped block 23 are integrally formed, which also ensures that there is no air leakage between the detection rod and the arc-shaped block; In addition, the first detection rod 4, the second detection rod 5, the sliding rod 16 and the top shell 2 are hermetically connected through sealing rings, and at the same time, it can also ensure sliding connection to prevent the gas inside the shell 1 from leaking; A sealing gasket can also be provided on the top surface of the plugging plate 14. After it is closed, the inside of the top shell 2 can also be sealed. In this way, the plugging plate 14 can not only cut off the oil furnace pollution, but also seal the inside of the top shell 2.

[0032] Finally, after the high-pressure gas purges the accumulated oil impurities through the vent hole 29, it naturally discharges through the exhaust channel or gap reserved inside the shell 1. Since the high-pressure gas generator has been turned off, it will not obstruct the internal oil cooling cycle. The gas flow rate and pressure are controlled by an external high-pressure generator to avoid forming internal high pressure and ensure that the cooling oil circulation is unobstructed.

[0033] As a preferred technical solution of the present invention, the cross-sections of the sliding plate 25 and the sliding groove 24 are L-shaped. With this setting, the sliding plate 25 can be prevented from disengaging from the sliding groove 24.

[0034] As a preferred technical solution of the present invention, one end of the insertion rod 13 located inside the side block 19 is chamfered. With this setting, it is convenient for the insertion rod 13 to play a guiding role when inserted into the side block 19.

[0035] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oil-cooled permanent magnet speed regulator, comprising a speed regulator body, a housing (1) connected to the outside of the speed regulator body, a conductor disk (8) and a permanent magnet disk (9) installed in the housing (1), characterized in that: The shell (1) has a through hole at the top, a top shell (2) is fixedly mounted in the through hole, the top shell (2) is open at the bottom, a first detection rod (4) and a second detection rod (5) are slidably connected to the top of the top shell (2), a first arc block (22) is fixedly connected to the bottom surface of the first detection rod (4), the bottom surface of the first arc block (22) abuts against the outer wall of the conductor disk (8), a second arc block (23) is fixedly connected to the bottom surface of the second detection rod (5), the bottom surface of the second arc block (23) abuts against the outer wall of the permanent magnetic disk (9), a calibration mark (18) is fixedly connected to the outer walls of the first detection rod (4) and the second detection rod (5), a top plate (6) is fixedly connected to the top of the first detection rod (4), and the second detection rod (5) is slidably connected to the first detection rod (4).

2. The oil-cooled permanent magnet speed regulator according to claim 1, characterized in that: A sliding groove (24) communicating with the outside is provided in the first detection rod (4), a sliding plate (25) is slidably connected in the sliding groove (24), the other end of the sliding plate (25) is fixedly connected to a cross bar (11), and the cross bar (11) is fixedly connected to the top surface of the second detection rod (5).

3. The oil-cooled permanent magnet speed regulator according to claim 1, characterized in that: The outer wall of the top shell (2) is fixedly connected to a back plate (3), an insertion rod (13) is slidably connected to the back plate (3), the outer wall of the first detection rod (4) is fixedly connected to a side block (19), the insertion rod (13) passes through the back plate (3) and is plugged into the side block (19), one end of the side block (19) located outside the back plate (3) is fixedly connected to a support plate (26), the inner wall of the support plate (26) is fixedly connected to a tension spring (27), and the other end of the tension spring (27) is in contact with the outer wall of the back plate (3).

4. The oil-cooled permanent magnet speed regulator according to claim 1, characterized in that: The top shell (2) is located inside the shell (1), and one end of the outer wall of the top shell (2) is fixedly connected to an outer plate (20). The outer end of the opening of the top shell (2) is hingedly provided with a blocking plate (14) via a torsion spring.

5. The oil-cooled permanent magnet speed regulator according to claim 1, characterized in that: A gear ring (10) is fixedly mounted on a side of the conductor disk (8) away from the permanent magnetic disk (9) via a fastening bolt; a gear (15) is rotatably connected to an outer wall of the first detection rod (4) away from the second detection rod (5); a rotating shaft (30) is fixedly connected to the outer wall of the gear (15); a coil spring (31) is sleeved on the outer side of the rotating shaft (30); a winding rope (17) is fixedly connected to the outer end of the coil spring (31); a mounting tube (21) is sleeved on the outer side of the rotating shaft (30); the rotating shaft (30), the coil spring (31) and the winding rope (17) are located in the mounting tube (21); a sliding rod (16) is fixedly connected to the outer wall of the mounting tube (21); the top of the sliding rod (16) passes through the top shell (2) and is slidably connected thereto; the outer end of the winding rope (17) located in the mounting tube (21) passes through the mounting tube (21), the sliding rod (16) and the top plate (6) and is fixedly connected to a pull ring (12).

6. The oil-cooled permanent magnet speed regulator according to claim 1, characterized in that: An air passage (28) is provided in the first detection rod (4) and the second detection rod (5); a U-shaped pipe (7) is fixedly connected to the top surface of the top plate (6); the U-shaped pipe (7) is connected to an external high-pressure gas generator; the U-shaped pipe (7) passes through the top plate (6) and is connected to the air passage (28) in the first detection rod (4) and the second detection rod (5); a vent hole (29) is provided at the bottom of each of the first arc block (22) and the second arc block (23); the air passage (28) is connected to the vent hole (29).

7. The oil-cooled permanent magnet speed regulator according to claim 2, characterized in that: The cross sections of the slide plate (25) and the slide groove (24) are L-shaped.

8. The oil-cooled permanent magnet speed regulator according to claim 3 is characterized in that: One end of the insertion rod (13) located inside the side block (19) is chamfered.

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