Oil-cooled permanent magnet speed-regulating integrated all-in-one machine

Abstract

The application relates to the technical field of permanent magnet couplers, in particular to an oil-cooled permanent magnet speed regulating integrated all-in-one machine, which comprises a mounting plate, a mounting barrel is fixedly installed on the side of the mounting plate, a rotatable conductor rotor is arranged on the side of the mounting barrel, a plurality of first connecting rods are fixedly installed on the end of the conductor rotor away from the mounting barrel, a connecting plate is fixedly installed on the side of the first connecting rod away from the conductor rotor, and a rotatable permanent magnet rotor is arranged between the conductor rotor and the connecting plate. The first spring releases elastic force to drive the first transmission structure to axially displace, the displacement monitoring structure identifies the displacement signal to trigger the driving structure, the permanent magnet rotor is driven to move away from the conductor rotor to realize emergency disengagement, the whole protection mechanism is triggered relying on pure mechanical characteristics, does not need to depend on external electric control and sensing signals, can be adapted to extreme working conditions such as power failure and signal failure, effectively improves the response reliability of overload protection, and avoids structural damage of the rotor and the transmission chain due to continuous overload.

Description

Technical Field

[0001] This invention relates to the field of permanent magnet coupler technology, and in particular to an oil-cooled permanent magnet speed-regulating integrated machine. Background Technology

[0002] Oil-cooled permanent magnet speed regulating integrated machine is the core equipment for achieving flexible speed regulation and energy-saving operation in industrial high-power transmission systems. It relies on the non-contact permanent magnet transmission principle to complete torque transmission and stepless speed regulation. It is equipped with an integrated thin oil cooling system to adapt to heavy-load and high-temperature working conditions. It is widely used in energy-saving retrofitting and transmission protection of fan and pump loads in industries such as power, petrochemical, and metallurgy. It is an important piece of equipment for achieving energy saving and carbon reduction in the industrial transmission field.

[0003] Existing permanent magnet speed control equipment relies heavily on external electronic control sensors and actuators for overload emergency protection. The protection mechanism based on purely mechanical passive triggering is relatively weak, and there is room for improvement in the reliability of fault response under extreme conditions. The monitoring of internal rotor temperature rise mainly relies on external temperature measuring elements, and the in-situ temperature rise sensing and early warning mechanism for rotating parts needs to be improved. There is room for optimization in the ability to prevent and control over-temperature risks caused by abnormal cooling. At the same time, the linkage triggering accuracy between air gap adjustment and fault protection needs to be strengthened, the quantitative monitoring accuracy of displacement status needs to be improved, and the adaptability and adjustment stability of protection actions still have room for optimization. To address these issues, we propose an integrated oil-cooled permanent magnet speed control unit. Summary of the Invention

[0004] To overcome the shortcomings of existing technologies, the present invention provides the following technical solution: an oil-cooled permanent magnet speed-regulating integrated machine, comprising a mounting plate, an mounting barrel fixedly mounted on the side of the mounting plate, a rotating conductor rotor disposed on the side of the mounting barrel, a plurality of first connecting rods fixedly mounted on the end of the conductor rotor away from the mounting barrel, a connecting plate fixedly mounted on the side of the first connecting rods away from the conductor rotor, a rotating permanent magnet rotor disposed between the conductor rotor and the connecting plate, a first rotating column fixedly mounted on one end of the permanent magnet rotor, one end of the first rotating column penetrating the connecting plate, a second rotating column rotatably mounted inside the mounting barrel, one end of the second rotating column penetrating the conductor rotor, a first mounting cavity being formed inside the permanent magnet rotor, the permanent magnet rotor corresponding to the conductor... A second mounting cavity is provided at one end of the rotor. A first guide hole is provided inside the permanent magnet rotor to connect the first mounting cavity and the second mounting cavity. A first transmission structure with elastic reset function is provided inside the first mounting cavity. A pressing plate is fixedly provided at one end of the first transmission structure. A pressing structure is provided at one end of the second rotating column corresponding to the inside of the mounting barrel. A mounting groove penetrating the first rotating column and the permanent magnet rotor is provided at one end of the first rotating column. A second transmission structure is provided inside the second mounting cavity and the mounting groove. The first transmission structure and the second transmission structure are fixedly connected together. A displacement monitoring structure is provided inside the mounting groove corresponding to the position of the first rotating column. A drive structure for driving the first rotating column to move is provided on the outside of the first rotating column.

[0005] As a preferred embodiment of the present invention, a rotating shaft is fixedly installed on the end face of the conductor rotor, a bearing is sleeved on the outside of the rotating shaft, and a fixed tooth is fixedly installed on one end of the rotating shaft.

[0006] As a preferred embodiment of the present invention, the first transmission structure includes a connecting block slidably installed inside the first mounting cavity. A first spring is fixedly installed at one end of the connecting block, and the end of the first spring away from the connecting block is fixedly installed on the side of the first mounting cavity. A sliding column is fixedly installed on the end face of the connecting block. One end of the sliding column passes through a second rotating column and is fixedly connected to the end face of the extrusion plate. A second connecting rod is fixedly installed at the end of the connecting block away from the sliding column. The second connecting rod passes through a first guide hole and extends into the interior of the second mounting cavity and is fixedly connected to the second transmission structure.

[0007] As a preferred embodiment of the present invention, the extrusion structure includes a plurality of third connecting rods fixedly installed on the end face of the second rotating column, one end of the third connecting rod is rotatably mounted with a swing rod, and one end of the swing rod is fixedly mounted with a counterweight ball.

[0008] As a preferred embodiment of the present invention, the second transmission structure includes a movable column slidably installed inside the second mounting cavity and the mounting groove. A third mounting cavity is opened inside the movable column. A piston block is slidably installed inside the third mounting cavity. A second spring is fixedly installed at one end of the piston block. The end of the second spring away from the piston block is fixedly installed inside the third mounting cavity. A second guide hole is opened at one end of the movable column corresponding to the second connecting rod. A pressing column is fixedly installed at one end of the piston block corresponding to the second guide hole. The pressing column passes through the second guide hole and is fixedly installed on the end face of the second connecting rod.

[0009] As a preferred embodiment of the present invention, the displacement monitoring structure includes a rack fixedly installed at one end of a movable column, a mounting column fixedly installed inside the mounting groove corresponding to the position of the rack, and a rolling monitor that meshes with the rack is rotatably installed inside the mounting column.

[0010] As a preferred embodiment of the present invention, the drive structure includes a spline groove formed on the outer side of the first rotating column, a spline shaft that rotates synchronously with the first rotating column is installed on the outer side of the first rotating column corresponding to the position of the spline groove, a mounting block is provided on the outer side of the spline shaft, the mounting block is rotatably connected to the spline shaft, a fixed telescopic structure is provided on the side of the mounting block, and one end of the telescopic structure is fixedly installed on the outer main housing.

[0011] As a preferred embodiment of the present invention, the sliding column and the second rotating column are slidably fitted along the axial direction, and the outer wall of the second connecting rod is slidably fitted with the inner wall of the first guide hole.

[0012] As a preferred embodiment of the present invention, the third mounting cavity is filled with a working fluid that expands in volume when heated, and the piston block is in a sealing sliding fit with the inner wall of the third mounting cavity.

[0013] As a preferred embodiment of the present invention, the output end of the telescopic structure is fixedly connected to the mounting block, and is used to drive the mounting block, spline shaft and first rotating column to move back and forth along the axial direction.

[0014] Compared with the prior art, the beneficial effects that this invention can achieve are: 1. This invention utilizes a compression structure consisting of a third connecting rod, a swing rod, and a counterweight ball. This structure rotates synchronously with the second rotating column, using centrifugal force to achieve swing compression and provide a stable axial limiting force under normal operating conditions. A first transmission structure, composed of a connecting block, a first spring, and a sliding column, provides elastic reset, automatically completing axial rebound reset when the external compression force dissipates. Through the cooperation between the compression structure, the first transmission structure, and the drive structure, under normal operating conditions, the counterweight ball swings outward under centrifugal force, compressing the compression disc and the first spring, maintaining the working position of the transmission structure. When the permanent magnet rotor is overloaded and stops, the centrifugal force disappears synchronously, the first spring releases its elastic force, causing the first transmission structure to shift axially. The displacement monitoring structure identifies this displacement signal and triggers the drive structure, causing the permanent magnet rotor to move away from the conductor rotor to achieve emergency disengagement. The entire protection mechanism relies on purely mechanical triggering characteristics, without relying on external electrical control or sensor signals. It can adapt to extreme conditions such as power outages and signal failures, effectively improving the response reliability of overload protection and preventing structural damage to the rotor and transmission chain due to continuous overload.

[0015] 2. This invention utilizes a third mounting cavity located inside the moving column and a sealed sliding piston block. The cavity is filled with a working fluid that expands with heat, allowing direct sensing of temperature changes inside the rotor. The temperature rise signal is converted into axial displacement of the piston. Through a displacement monitoring structure composed of a rack, mounting column, and rolling monitor, the axial displacement is converted into rotational amplitude, accurately quantifying the displacement range and enabling numerical identification of temperature anomalies. Through the cooperation between the second transmission structure and the displacement monitoring structure, when an abnormality in the cooling system causes an increase in the temperature inside the rotor, the working fluid in the third mounting cavity expands with heat, pushing the moving column relative to the compression column to form an axial displacement. Simultaneously, this drives the rack to move and rotates the rolling monitor, converting the temperature rise signal inside the rotor into a monitorable displacement signal. In-situ temperature rise warning can be achieved without external temperature sensing elements penetrating the rotating structure. In scenarios of insufficient heat dissipation or cooling failure, an over-temperature alarm can be triggered in advance, allowing timely intervention to prevent irreversible demagnetization of the permanent magnet and effectively improving the thermal safety protection capability of the equipment.

[0016] 3. This invention utilizes a displacement monitoring structure that meshes with a rack and pinion and a rolling detector. This structure converts axial linear displacement into circumferential rotation, accurately quantifies displacement values, distinguishes displacement characteristics of different fault types, and improves the accuracy of fault identification. Through the spline groove on the outer side of the first rotating column and its meshing with the spline shaft, the rotor can be supported to slide smoothly back and forth along the axial direction while ensuring synchronous circumferential torque transmission. Through the cooperation between the displacement monitoring structure, the drive structure, and the spline meshing structure, the displacement monitoring structure can accurately collect displacement data from the first and second transmission structures, distinguish between different operating conditions such as overload shutdown and abnormal temperature rise, and output precise trigger signals to the drive structure. This enables graded and precise responses under fault conditions, improving the triggering accuracy of protection actions. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the conductor rotor structure of the present invention; Figure 3 This is a schematic diagram of the permanent magnet rotor structure of the present invention; Figure 4 This is a schematic diagram of the mounting bucket structure of the present invention; Figure 5 For the present invention Figure 4 Enlarged schematic diagram of the structure at point A in the middle; Figure 6 For the present invention Figure 4 Enlarged schematic diagram of the structure at point B; Figure 7 For the present invention Figure 4 Enlarged schematic diagram of the structure at point C.

[0018] Wherein: 111, mounting plate; 112, mounting barrel; 211, conductor rotor; 212, first connecting rod; 213, connecting plate; 214, rotating shaft; 215, fixed tooth; 311, permanent magnet rotor; 312, first rotating column; 313, spline groove; 314, mounting block; 315, spline shaft; 316, mounting groove; 411, second rotating column; 412, first mounting cavity; 413, second mounting cavity; 414, first guide rod. 421. Guide hole; 422. Sliding column; 423. Connecting block; 424. First spring; 425. Second connecting rod; 426. Extrusion plate; 431. Moving column; 432. Third mounting cavity; 433. Second guide hole; 434. Extrusion column; 435. Piston block; 436. Second spring; 441. Rack; 442. Mounting column; 443. Rolling monitor; 451. Third connecting rod; 452. Swing rod; 453. Counterweight ball. Detailed Implementation

[0019] To make the technical means, creative features, and achieved objectives and effects of this invention easier to understand, the invention is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0020] Example: Figures 1 to 7As shown, an oil-cooled permanent magnet speed-regulating integrated machine includes a mounting plate 111. A mounting barrel 112 is fixedly mounted on the side of the mounting plate 111. A rotating conductor rotor 211 is disposed on the side of the mounting barrel 112. A plurality of first connecting rods 212 are fixedly mounted on the end of the conductor rotor 211 away from the mounting barrel 112. A connecting plate 213 is fixedly mounted on the side of the first connecting rods 212 away from the conductor rotor 211. A rotating permanent magnet rotor 311 is disposed between the conductor rotor 211 and the connecting plate 213. A first rotating column 312 is fixedly mounted on one end of the permanent magnet rotor 311. A second rotating column 411 is rotatably mounted inside the mounting barrel 112, with one end of the second rotating column 411 penetrating the conductor rotor 211. A first mounting cavity 412 is formed inside the permanent magnet rotor 311, and a second mounting cavity 413 is formed at one end of the permanent magnet rotor 311 corresponding to the conductor rotor 211. A first guide hole 414 is formed inside the permanent magnet rotor 311 to connect the first mounting cavity 412 and the second mounting cavity 413. A first transmission structure with elastic reset function is set inside the first mounting cavity 412, and a fixedly set extrusion plate 425 is set at one end of the first transmission structure. One end of the rotating column 411 corresponding to the interior of the mounting barrel 112 is provided with a pressing structure. One end of the first rotating column 312 is provided with a mounting groove 316 that penetrates the first rotating column 312 and the permanent magnet rotor 311. The second mounting cavity 413 and the mounting groove 316 are provided with a second transmission structure. The first transmission structure and the second transmission structure are fixedly connected together. The mounting groove 316 is provided with a displacement monitoring structure corresponding to the position of the first rotating column 312. The outside of the first rotating column 312 is provided with a drive structure to drive the first rotating column 312 to move. A rotating shaft 214 is fixedly installed on the end face of the conductor rotor 211. 214 is sleeved with a rotating shaft 214 bearing on the outside. One end of the rotating shaft 214 is fixedly installed with a fixing tooth 215. A spline groove 313 is opened on the outside of the first rotating column 312. A spline shaft 315 that rotates synchronously with the first rotating column 312 is installed on the outside of the first rotating column 312 at the position corresponding to the spline groove 313. An installation block 314 is provided on the outside of the spline shaft 315. The installation block 314 is rotatably connected to the spline shaft 315. A fixed telescopic structure is provided on the side of the installation block 314. One end of the telescopic structure is fixedly installed on the outer main housing. The piston block 435 is sealed and slidably fitted with the inner wall of the third mounting cavity 432.

[0021] More specifically, during operation, rotating the conductor rotor 211 causes the first connecting rod 212 to rotate, which in turn causes the connecting plate 213 to rotate. As the conductor rotor 211 rotates, a mutual electromagnetic attraction is generated between it and the permanent magnet rotor 311, causing the permanent magnet rotor 311 to rotate as well. The permanent magnet rotor 311, through a second transmission structure, drives the second rotating column 411 to rotate. When the second rotating column 411 rotates, it compresses the extrusion disc 425 through an extrusion structure. The extrusion disc 425 then moves the first and second transmission structures, allowing normal operation to begin. However, if the permanent magnet rotor 311 is overloaded and causes jamming, the permanent magnet rotor 311 will... 11. When the rotation stops and the extrusion device loses its rotational force, it can no longer extrude the extrusion disc 425. At this time, the first transmission structure moves along with the second transmission structure. After the displacement monitoring structure detects this movement distance, it drives the first rotating column 312 to move through the drive structure, so that the first rotating column 312 carries the permanent magnet rotor 311 away from the conductor rotor 211, in order to quickly deal with the overload jamming phenomenon. The external power gear meshes with the fixed gear 215 to drive the rotating shaft 214 and the conductor rotor 211 to rotate. The telescopic structure drives the mounting block 314, the spline shaft 315 and the first rotating column 312 to move. The first rotating column 312 carries the spline shaft 315 to rotate inside the mounting block 314.

[0022] like Figure 4 and Figure 5 As shown, specifically, the first transmission structure includes a connecting block 422 slidably installed inside the first mounting cavity 412. A first spring 423 is fixedly installed at one end of the connecting block 422. The end of the first spring 423 away from the connecting block 422 is fixedly installed on the side of the first mounting cavity 412. A sliding column 421 is fixedly installed on the end face of the connecting block 422. One end of the sliding column 421 passes through the second rotating column 411 and is fixedly connected to the end face of the extrusion plate 425. A second connecting rod 424 is fixedly installed at the end of the connecting block 422 away from the sliding column 421. The second connecting rod 424 passes through the first guide hole 414 and extends into the interior of the second mounting cavity 413 and is fixedly connected to the second transmission structure. The extrusion structure includes several third connecting rods 451 fixedly installed on the end face of the second rotating column 411. A swing rod 452 is rotatably installed at one end of the third connecting rod 451. A counterweight ball 453 is fixedly installed at one end of the swing rod 452.

[0023] More specifically, when the second rotating column 411 rotates, the extrusion structure pushes the extrusion disc 425 to move, the extrusion disc 425 drives the sliding column 421 to move, the sliding column 421 drives the connecting block 422 to extrude the first spring 423, the connecting block 422 drives the second transmission structure to move through the second connecting rod 424, and when the second rotating column 411 rotates, it drives the third connecting rod 451, the swing rod 452 and the counterweight ball 453 to rotate, the counterweight ball 453 and the swing rod 452 swing on the third connecting rod 451, and the counterweight ball 453 extrudes the extrusion disc 425.

[0024] like Figure 4 , Figure 6 and Figure 7 As shown, specifically, the second transmission structure includes a movable column 431 slidably installed inside the second mounting cavity 413 and the mounting groove 316. A third mounting cavity 432 is opened inside the movable column 431. A piston block 435 is slidably installed inside the third mounting cavity 432. A second spring 436 is fixedly installed at one end of the piston block 435. The end of the second spring 436 away from the piston block 435 is fixedly installed inside the third mounting cavity 432. A second guide hole 433 is opened at one end of the movable column 431 corresponding to the second connecting rod 424. A pressing column 434 is fixedly installed at one end of the second spring 436 corresponding to the second guide hole 433. The pressing column 434 passes through the second guide hole 433 and is fixedly installed on the end face of the second connecting rod 424. The displacement monitoring structure includes a rack 441 fixedly installed at one end of the movable column 431. A mounting column 442 is fixedly installed inside the mounting groove 316 at the position corresponding to the rack 441. A rolling monitor 443 that meshes with the rack 441 is rotatably installed inside the mounting column 442.

[0025] More specifically, when a liquid that expands in volume due to heat is poured into the third mounting cavity 432, and the cooling oil circulation flow rate is too low, resulting in poor heat dissipation, the heat between the permanent magnet rotor 311 and the conductor rotor 211 will increase, the oil storage space of the piston block 435 will increase, and the moving column 431 will move while the extrusion column 434 remains stationary. The distance that the moving column 431 moves will cause the displacement monitoring structure to detect the distance of movement and issue an alarm, reminding the staff to carry out maintenance. When the rack 441 moves, it drives the rolling monitor 443 to rotate. The distance that the rack 441 moves is determined by the number of rotations of the rolling monitor 443, thereby distinguishing the alarm signal.

[0026] Working principle: Electromagnetic coupling is generated by the rotation of the conductor rotor 211, which drives the permanent magnet rotor 311 to achieve non-contact torque transmission. During normal operation, the second rotating column 411 drives the extrusion structure to rotate, and the counterweight ball 453 is subjected to centrifugal force to extrude the first transmission structure, maintaining the working state of the equipment. When the permanent magnet rotor 311 is overloaded and stops rotating, the centrifugal force disappears synchronously, and the first spring 423 pushes the first transmission structure and the second transmission structure to move axially. After the displacement monitoring structure recognizes the signal, it triggers the drive structure, which drives the permanent magnet rotor 311 away from the conductor rotor 211 to complete the emergency disengagement. When the cooling is abnormal and the temperature rises, the working fluid in the second transmission structure expands due to heat and causes displacement. The displacement monitoring structure recognizes this and triggers the over-temperature alarm. The entire process relies on mechanical characteristics to achieve passive fault protection and temperature rise warning.

[0027] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. An oil-cooled permanent magnet speed-regulating integrated machine, comprising a mounting plate (111), a mounting barrel (112) fixedly mounted on the side of the mounting plate (111), a rotating conductor rotor (211) disposed on the side of the mounting barrel (112), a plurality of first connecting rods (212) fixedly mounted on the end of the conductor rotor (211) away from the mounting barrel (112), a connecting plate (213) fixedly mounted on the side of the first connecting rods (212) away from the conductor rotor (211), a rotating permanent magnet rotor (311) disposed between the conductor rotor (211) and the connecting plate (213), a first rotating column (312) fixedly mounted on one end of the permanent magnet rotor (311), one end of the first rotating column (312) penetrating the connecting plate (213), a second rotating column (411) rotatably mounted inside the mounting barrel (112), one end of the second rotating column (411) penetrating the conductor rotor (211), characterized in that, The permanent magnet rotor (311) has a first mounting cavity (412) inside, and a second mounting cavity (413) is provided at one end of the permanent magnet rotor (311) corresponding to the conductor rotor (211). The permanent magnet rotor (311) has a first guide hole (414) inside to connect the first mounting cavity (412) and the second mounting cavity (413). The first mounting cavity (412) is provided with a first transmission structure with elastic reset function. One end of the first transmission structure is provided with a fixedly installed extrusion plate (425). The second rotating column (411) corresponds to the mounting barrel (1 12) An extrusion structure is provided at one end of the interior. An installation groove (316) is provided at one end of the first rotating column (312) that passes through the first rotating column (312) and the permanent magnet rotor (311). A second transmission structure is provided inside the second installation cavity (413) and the installation groove (316). The first transmission structure and the second transmission structure are fixedly connected together. A displacement monitoring structure is provided inside the installation groove (316) corresponding to the position of the first rotating column (312). A drive structure for driving the first rotating column (312) to move is provided on the outside of the first rotating column (312).

2. The oil-cooled permanent magnet speed-regulating integrated machine according to claim 1, characterized in that, A rotating shaft (214) is fixedly installed on the end face of the conductor rotor (211), a bearing is sleeved on the outside of the rotating shaft (214), and a fixed tooth (215) is fixedly installed on one end of the rotating shaft (214).

3. The oil-cooled permanent magnet speed-regulating integrated machine according to claim 2, characterized in that, The first transmission structure includes a connecting block (422) slidably installed inside the first mounting cavity (412). A first spring (423) is fixedly installed at one end of the connecting block (422). The end of the first spring (423) away from the connecting block (422) is fixedly installed on the side of the first mounting cavity (412). A sliding column (421) is fixedly installed on the end face of the connecting block (422). One end of the sliding column (421) passes through the second rotating column (411) and is fixedly connected to the end face of the extrusion plate (425). A second connecting rod (424) is fixedly installed at the end of the connecting block (422) away from the sliding column (421). The second connecting rod (424) passes through the first guide hole (414) and extends into the interior of the second mounting cavity (413) and is fixedly connected to the second transmission structure.

4. The oil-cooled permanent magnet speed-regulating integrated machine according to claim 3, characterized in that, The extrusion structure includes several third connecting rods (451) fixedly installed on the end face of the second rotating column (411). A swing rod (452) is rotatably installed on one end of the third connecting rod (451), and a counterweight ball (453) is fixedly installed on one end of the swing rod (452).

5. The oil-cooled permanent magnet speed-regulating integrated machine according to claim 4, characterized in that, The second transmission structure includes a movable column (431) slidably installed inside the second mounting cavity (413) and the mounting groove (316). A third mounting cavity (432) is opened inside the movable column (431). A piston block (435) is slidably installed inside the third mounting cavity (432). A second spring (436) is fixedly installed at one end of the piston block (435). The end of the second spring (436) away from the piston block (435) is fixedly installed on the inner side of the third mounting cavity (432). A second guide hole (433) is opened at one end of the movable column (431) corresponding to the second connecting rod (424). A pressing column (434) is fixedly installed at one end of the piston block (435) corresponding to the second guide hole (433). The pressing column (434) passes through the second guide hole (433) and is fixedly installed on the end face of the second connecting rod (424).

6. The oil-cooled permanent magnet speed-regulating integrated machine according to claim 5, characterized in that, The displacement monitoring structure includes a rack (441) fixedly installed at one end of a movable column (431), and a mounting column (442) fixedly installed inside the mounting groove (316) at the position corresponding to the rack (441). A rolling monitor (443) that meshes with the rack (441) is rotatably installed inside the mounting column (442).

7. The oil-cooled permanent magnet speed-regulating integrated machine according to claim 6, characterized in that, The drive structure includes a spline groove (313) formed on the outside of the first rotating column (312). A spline shaft (315) that rotates synchronously with the first rotating column (312) is installed on the outside of the first rotating column (312) at a position corresponding to the spline groove (313). A mounting block (314) is provided on the outside of the spline shaft (315). The mounting block (314) is rotatably connected to the spline shaft (315). A fixed telescopic structure is provided on the side of the mounting block (314). One end of the telescopic structure is fixedly installed on the outer main housing.

8. The oil-cooled permanent magnet speed-regulating integrated machine according to claim 7, characterized in that, The sliding column (421) and the second rotating column (411) slide in axial direction, and the outer wall of the second connecting rod (424) slides against the inner wall of the first guide hole (414).

9. The oil-cooled permanent magnet speed-regulating integrated machine according to claim 8, characterized in that, The third mounting cavity (432) is filled with working fluid that expands in volume when heated, and the piston block (435) is in a sealing sliding fit with the inner wall of the third mounting cavity (432).

10. The oil-cooled permanent magnet speed-regulating integrated machine according to claim 9, characterized in that, The output end of the telescopic structure is fixedly connected to the mounting block (314) and is used to drive the mounting block (314), spline shaft (315) and first rotating column (312) to move back and forth along the axial direction.

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