CN112179660A - Novel high-speed flywheel test device - Google Patents
Novel high-speed flywheel test device Download PDFInfo
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- CN112179660A CN112179660A CN202010897401.7A CN202010897401A CN112179660A CN 112179660 A CN112179660 A CN 112179660A CN 202010897401 A CN202010897401 A CN 202010897401A CN 112179660 A CN112179660 A CN 112179660A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/14—Testing gas-turbine engines or jet-propulsion engines
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
Abstract
The invention discloses a novel high-speed flywheel testing device, which comprises a rotor and a stator, wherein the rotor comprises a flywheel shaft, a flywheel, a high-speed bearing, an outer oil slinger, an inner oil slinger, a coupler and a shaft sleeve which are integrally formed; the stator comprises a left shell and a right shell, the left shell and the right shell are coaxially provided with bearing mounting holes matched with an outer ring of the high-speed bearing, a ring rotationally matched with the flywheel shaft is further arranged in the bearing mounting holes, and the ring is positioned on one side of the high-speed bearing facing the flywheel; a bearing cover is arranged in a bearing mounting hole positioned on the other side of the high-speed bearing, air inlets respectively extending to the flywheel shaft and the coupling are arranged in the bearing mounting hole and the upper part of the bearing cover in a penetrating manner, and oil outlets extending to the flywheel shaft and the coupling are arranged in the lower part of the bearing mounting hole in a penetrating manner; an oil inlet is arranged at the lower part of the bearing cover in a penetrating way. The invention realizes the long-time high-speed stable operation of the flywheel test device and meets the test requirements of the aircraft engine.
Description
Technical Field
The invention relates to the field of testing of aircraft engines, in particular to a novel high-speed flywheel testing device.
Background
With the continuous and deep independent research and development of domestic aero-engines, various tests such as performances, service lives and reliability of the aero-engines need to be followed up continuously. One of the most important performance indicators for aircraft engine testing is: the engine rapidly accelerates from an idle slow-moving state to a transient characteristic of full load, full speed. To verify this characteristic, a high-speed flywheel test apparatus is carried, which can simulate the inertia effect of a helicopter rotor or propeller on a test bench. The high-speed flywheel has high rotating speed and large kinetic energy, and the traditional flywheel is limited by bearing lubrication, large unbalance allowance and the like, so that the speed is difficult to meet the requirements of an aircraft engine.
Disclosure of Invention
The invention provides a novel high-speed flywheel testing device, which aims to solve the technical problems that the speed of the existing flywheel is difficult to meet the requirements of an aeroengine due to the restriction of bearing lubrication and large unbalance allowance.
The technical scheme adopted by the invention is as follows:
a novel high-speed flywheel testing device comprises a rotor and a stator,
the rotor comprises a flywheel shaft and a flywheel which are integrally formed, high-speed bearings fixed on the flywheel shaft are symmetrically arranged on two sides of the flywheel, an outer oil slinger and an inner oil slinger are respectively arranged on two sides of the high-speed bearings, couplers are arranged at two ends of the flywheel shaft, and a shaft sleeve is fixedly arranged between the outer oil slinger and the couplers;
the stator comprises a left shell and a right shell which are detachably connected, the left shell and the right shell are coaxially provided with bearing mounting holes matched with the outer ring of the high-speed bearing, a ring rotationally matched with the flywheel shaft is further arranged in the bearing mounting holes, and the ring is positioned on one side of the high-speed bearing, which faces the flywheel; a bearing cover is arranged in a bearing mounting hole positioned on the other side of the high-speed bearing, air inlets respectively extending to the flywheel shaft and the coupling are arranged in the bearing mounting hole and the upper part of the bearing cover in a penetrating manner, and oil outlets extending to the flywheel shaft and the coupling are arranged in the lower part of the bearing mounting hole in a penetrating manner; and an oil inlet for inputting high-pressure lubricating oil into the high-speed bearing is formed in the lower part of the bearing cover in a penetrating manner.
Further, the shaft sleeve is matched with the flywheel shaft in a transition fit mode.
Furthermore, the shaft sleeve is fixed at the corresponding part of the flywheel shaft in a hot sleeve mode during assembly, and the interference magnitude of the inner diameter of the shaft sleeve compared with the outer diameter of the corresponding part of the flywheel shaft is 0.018 mm.
Furthermore, an annular air inlet groove communicated with the air inlet on the bearing cover is formed in the circumferential direction of the cylindrical surface of the coupler.
Furthermore, a first annular groove communicated with an air inlet at the upper part of the bearing mounting hole is formed in the inner peripheral wall of the bearing mounting hole, a second annular groove is formed in the inner peripheral wall of the ferrule along the circumferential direction, and a plurality of communication holes communicated with the first annular groove and the second annular groove are formed in the ferrule at intervals along the circumferential direction.
Furthermore, a third annular groove and an annular oil discharge groove are axially arranged on the inner peripheral wall of the bearing cover matched with the outer periphery of the coupler at intervals, the third annular groove is communicated with an air inlet formed in the upper portion of the bearing cover in a penetrating mode, and the annular oil discharge groove is communicated with an oil discharge port.
Furthermore, an annular oil inlet cavity communicated with the high-speed bearing is formed by one end, extending into the bearing mounting hole, of the bearing cover and the outer oil slinger positioned on the same side of the high-speed bearing, and the oil inlet cavity is communicated with the oil inlet and used for inputting high-pressure lubricating oil to the high-speed bearing.
Furthermore, the inner oil slinger and the ferrule positioned on the same side of the high-speed bearing jointly form an annular oil return cavity communicated with the high-speed bearing, and the oil return cavity is communicated with the oil discharge port and used for discharging lubricating oil for recycling.
Furthermore, a plurality of counter bores are formed in the end face, extending into the bearing mounting hole, of the bearing cover on one side of the left side shell at intervals along the circumferential direction, compression springs are arranged in the counter bores, spring retainer rings are arranged between the end face, extending into the bearing mounting hole, of the bearing cover and the corresponding high-speed bearing, one ends of the compression springs abut against the bottoms of the counter bores, and the other ends of the compression springs abut against the spring retainer rings, so that the spring retainer rings are kept to be tightly attached to the high-speed bearing.
Furthermore, a bearing temperature measuring port penetrates through the upper part of the bearing mounting hole, and the bearing temperature measuring port is used for mounting a temperature measuring device for measuring the real-time temperature of the high-speed bearing.
The invention has the following beneficial effects:
the high-speed flywheel test device has the advantages that the rotor is provided with the flywheel shaft and the flywheel which are integrally formed, the air inlets which respectively extend to the flywheel shaft and the coupler are arranged on the bearing mounting hole of the stator and the upper part of the bearing cover in a penetrating manner, the oil outlets which extend to the flywheel shaft and the coupler are arranged on the lower part of the bearing mounting hole in a penetrating manner, and the oil inlet which inputs high-pressure lubricating oil to the high-speed bearing is arranged on the lower part of the bearing cover in a penetrating manner, so that the height coincidence of the mass center and the geometric center of the flywheel is ensured, the rotor can stably run at a high speed, meanwhile, the lubricating cooling and the sealing performance of the bearing are realized by inputting high-pressure oil injection and compressed air, the utilization efficiency of oil is improved, the long-time high-speed stable running of the flywheel.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of a rotor structure of a high speed flywheel testing apparatus in accordance with a preferred embodiment of the present invention;
FIG. 2 is an assembly schematic diagram of a high speed flywheel testing apparatus in accordance with a preferred embodiment of the present invention.
Fig. 3 is an enlarged schematic view at a in fig. 2.
Fig. 4 is an enlarged schematic view at B in fig. 2.
Fig. 5 is an enlarged schematic view at C in fig. 2.
In the figure: 1. a coupling; 2. an annular air inlet groove; 3. a flywheel shaft; 4. an outer oil slinger; 5. an inner oil slinger; 6. a flywheel; 7. a high speed bearing; 8. a shaft sleeve; 9. a wind shield plate; 10. a left bearing cap; 11. a first air inlet; 12. a spring; 13. a spring collar; 14. a first bearing temperature measuring port; 15. a second air inlet; 16. a ferrule; 17. a left side case; 18. a gas guide hood; 19. a right side case; 20. a third air inlet; 21. a second bearing temperature measuring port; 22. a right bearing cap; 23. a fourth air inlet; 24. a protective cover; 25. a first oil inlet; 26. a first oil discharge port; 27. a second oil drain port; 28. a second oil inlet; 29. a first annular groove; 30. a communicating hole; 31. a second annular groove; 32. a third annular groove; 33. an oil discharge groove; 34. an oil inlet cavity; 35. an oil return chamber.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1 and 2, a preferred embodiment of the present invention provides a novel high-speed flywheel testing apparatus, including a rotor and a stator,
the rotor comprises a flywheel shaft 3 and a flywheel 6 which are integrally formed, high-speed bearings 7 fixed on the flywheel shaft 3 are symmetrically arranged on two sides of the flywheel 6, an outer oil slinger 4 and an inner oil slinger 5 are respectively arranged on two sides of each high-speed bearing 7, couplers 1 are arranged at two ends of the flywheel shaft 3, and shaft sleeves 8 are fixedly arranged between the outer oil slingers 4 and the couplers 1;
the stator comprises a left shell 17 and a right shell 19 which are detachably connected, the left shell 17 and the right shell 19 are detachably and fixedly connected through bolts, bearing mounting holes matched with the outer ring of the high-speed bearing 7 are coaxially arranged, a ferrule 16 rotationally matched with the flywheel shaft 3 is further arranged in the bearing mounting holes, and the ferrule 16 is positioned on one side, facing the flywheel 6, of the high-speed bearing 7; a bearing cover is arranged in a bearing mounting hole on the other side of the high-speed bearing 7, air inlets which respectively extend to the flywheel shaft 3 and the coupling 1 are arranged in the bearing mounting hole and the upper part of the bearing cover in a penetrating manner, and oil outlets which extend to the flywheel shaft 3 and the coupling 1 are arranged in the lower part of the bearing mounting hole in a penetrating manner; and an oil inlet for inputting high-pressure lubricating oil into the high-speed bearing 7 is formed in the lower part of the bearing cover in a penetrating manner.
Specifically, in this embodiment, a left bearing cover 10 is installed in the bearing installation hole of the left casing 17, a first air inlet 11 and a second air inlet 15 which respectively extend to the flywheel shaft 3 and the coupling 1 are arranged in the bearing installation hole of the left casing 17 and the upper portion of the left bearing cover 10 in a penetrating manner, and a second oil drain 27 which extends to the flywheel shaft 3 and the coupling 1 is arranged in the lower portion of the bearing installation hole of the left casing 17 in a penetrating manner; a second oil inlet 28 for inputting high-pressure lubricating oil to the high-speed bearing 7 is arranged at the lower part of the left bearing cover 10 of the left side shell 17 in a penetrating manner.
A right bearing cover 22 is installed in a bearing installation hole of the right side shell 19, a third air inlet 20 and a fourth air inlet 23 which respectively extend to the flywheel shaft 3 and the coupling 1 are arranged at the upper parts of the bearing installation hole of the right side shell 19 and the right bearing cover 22 in a penetrating manner, and a first oil outlet 26 which extends to the flywheel shaft 3 and the coupling 1 is arranged at the lower part of the bearing installation hole of the right side shell 19 in a penetrating manner; a first oil inlet 25 for inputting high-pressure lubricating oil to the high-speed bearing 7 is arranged at the lower part of the right bearing cover 22 of the right side shell 19 in a penetrating way.
The main problems due to the rotor running at high speed include easy unbalance and severe forced vibration. Therefore, the high-speed flywheel test device of this embodiment is through setting the rotor to integrated into one piece's flywheel shaft 3 and flywheel 6, and wherein, flywheel shaft 3 and flywheel 6 adopt forging integrated processing for the inside quality of rotor is even, has guaranteed the high coincidence of the barycenter of rotor and geometric center, and this has important meaning to the high-speed steady operation of rotor ability.
The main problem of the stator during high-speed operation is that heat accumulation is serious, particularly the high-speed bearing 7 part contacting with the rotor rises to a terrible height in a short time, and the whole testing mechanism is quickly deformed and failed due to expansion and contraction caused by ultrahigh temperature. In order to solve the problem of heat generation during high-speed operation of the high-speed bearing 7, the high-pressure oil injection mode is adopted in the embodiment to cool and lubricate the high-speed bearing 7 simultaneously, for example, the high-pressure lubricating oil of the left bearing cover 10 enters from the second oil inlet 28 of the left bearing cover 10 and is directly injected into the ball position of the high-speed bearing 7 along the oil passage, so that the heat of the high-speed bearing 7 is absorbed while the high-efficiency lubrication is provided, and finally the high-pressure lubricating oil is discharged from the second oil outlet 27 of the left shell 17 under the action of gravity. The discharged lubricating oil is collected, cooled and pressurized by an external hydraulic station and recycled. In this embodiment, the left bearing cover 10 and the left side shell 17 are further provided with a first air inlet 11 and a second air inlet 15 respectively, compressed air is introduced into the first air inlet 11 and the second air inlet 15, the introduced compressed air forms two air seals in the left bearing cover 10 and the ferrule 16, high-pressure lubricating oil can be effectively prevented from overflowing along the rotating matching surface of the rotor and the stator, and the utilization efficiency of the oil is improved.
Similarly, the high-pressure lubricating oil of the right bearing cover 22 enters from the first oil inlet 25 of the right bearing cover 22, is directly sprayed into the ball positions of the high-speed bearing 7 along the oil passage, provides high-efficiency lubrication, absorbs the heat of the high-speed bearing 7, and finally is discharged from the first oil outlet 26 of the right casing 19 under the action of gravity. The discharged lubricating oil is collected, cooled and pressurized by an external hydraulic station and recycled. In this embodiment, the right bearing cover 22 and the right housing 19 are further provided with a third air inlet 20 and a fourth air inlet 23 respectively, compressed air is introduced into the third air inlet 20 and the fourth air inlet 23, and the introduced compressed air forms two air seals in the right bearing cover 22 and the ferrule 16, so that high-pressure lubricating oil can be effectively prevented from overflowing along the rotating matching surface of the rotor and the stator, and the utilization efficiency of the oil is improved.
This embodiment is at the stator the upper portion of bearing mounting hole and bearing cap runs through the air inlet that is provided with and extends to flywheel shaft 3 and shaft coupling 1 respectively the lower part of bearing mounting hole runs through the oil drain that is provided with and extends to flywheel shaft 3 and shaft coupling 1 the lower part of bearing cap runs through to be provided with into the oil inlet of high-speed bearing 7 input high-pressure lubricating oil to guarantee the high coincidence of the barycenter of flywheel 6 and geometric center, ensure that the rotor can high-speed steady operation, simultaneously, realize lubricating cooling and the leakproofness to the bearing through oil inlet, air inlet input high-pressure oil spout and compressed air, improved the utilization efficiency of fluid, finally realize flywheel test device's long-time high-speed steady operation, satisfy aeroengine's test demand.
In a preferred embodiment of the invention, the shaft sleeve 8 is matched with the flywheel shaft 3 in a transition fit manner, wherein the shaft sleeve 8 is fixed at a corresponding part of the flywheel shaft 3 in a shrink fit manner during assembly, and the interference of the inner diameter of the shaft sleeve 8 compared with the outer diameter of the corresponding part of the flywheel shaft 3 is 0.018mm, so that the rotor can obtain the best integral performance under the condition of meeting the coaxiality requirement of the rotor.
In the preferred embodiment of the invention, the cylindrical surface of the coupling 1 is circumferentially provided with the annular air inlet groove 2 communicated with the air inlet on the bearing cover, when high-pressure air is input into the air inlet, annular air sealing can be formed in the annular air inlet groove 2, the high-pressure lubricating oil is effectively prevented from overflowing along the rotating matching surface of the rotor and the stator, and the utilization efficiency of the oil liquid is improved.
As shown in fig. 3, in the preferred embodiment of the present invention, a first annular groove 29 communicating with an air inlet at the upper part of the bearing mounting hole is provided on the inner peripheral wall of the bearing mounting hole, a second annular groove 31 is provided on the inner peripheral wall of the ferrule 16 along the circumferential direction, and a plurality of communication holes 30 communicating the first annular groove 29 with the second annular groove 31 are provided in the ferrule 16 along the circumferential direction at intervals. When high-pressure gas is input from the gas inlet, the high-pressure gas sequentially flows into the second annular groove 31 through the first annular groove 29 and the communication hole 30, so that annular gas sealing can be formed in the second annular groove 31, high-pressure lubricating oil is effectively prevented from overflowing along the rotating matching surface of the rotor and the stator, and the utilization efficiency of the oil is improved.
As shown in fig. 4, in the preferred embodiment of the present invention, a third annular groove 32 and an annular oil drain groove 33 are axially spaced from each other on the inner peripheral wall of the bearing cap that is fitted to the outer periphery of the coupling 1, the third annular groove 32 is communicated with an air inlet that is formed through the upper portion of the bearing cap, and the annular oil drain groove 33 is communicated with an oil drain port. For example, when the high-pressure gas is input into the first gas inlet 11, the high-pressure gas flows into the third annular groove 32, so that an annular gas seal can be formed in the second annular groove 31, the high-pressure lubricating oil is effectively prevented from overflowing along the rotating matching surface of the rotor and the stator, and the utilization efficiency of the oil is improved. And the annular oil drain groove 33 is communicated with the oil drain port, so that when overflow occurs between the bearing cover and the rotor, the outflowing lubricating oil can flow into the oil drain port from the annular oil drain groove 33, and the discharged lubricating oil is collected, cooled and pressurized by an external hydraulic station and recycled.
As shown in fig. 4, in a preferred embodiment of the present invention, a plurality of counter bores are circumferentially provided at intervals on an end surface of the left bearing cover 10, which is located on one side of the left casing 17, extending into the bearing mounting hole, wherein compression springs 12 are provided in the counter bores, spring retaining rings 13 are provided between the end surface of the left bearing cover 10 extending into the bearing mounting hole and the corresponding high-speed bearing 7, one end of each compression spring 12 abuts against the bottom of the counter bore, and the other end abuts against the spring retaining ring 13, so that the spring retaining ring 13 and the high-speed bearing 7 are kept in tight abutment. In the embodiment, axial play of the high-speed bearing 7 is eliminated by arranging the compression spring 12 and the spring retainer ring 13, in the continuous high-speed operation process, the flywheel shaft 3 axially extends due to temperature rise to drive the high-speed bearing 7 to axially displace when running for a long time, in order to ensure the stable operation of the high-speed flywheel test device, in the embodiment, the spring retainer ring 13 and the compression spring 12 are arranged between the end surface of the left bearing cover 10 extending into the bearing mounting hole and the high-speed bearing 7, so as to apply elastic pretightening force to the high-speed bearing 7, the pretightening force can limit the axial movement of the high-speed bearing 7, meanwhile, under the condition that the flywheel shaft 3 axially undergoes thermal expansion due to temperature rise when running for a long time, the length of the compression spring 12 is further compressed, so as to ensure that the high-speed bearing 7 generates normal axial displacement after temperature rise, and thus the, and ensuring the stable operation of the high-speed flywheel testing device, wherein the maximum compression length of the compression spring 12 is greater than the maximum axial displacement length of the high-speed bearing 7 after the temperature is raised.
As shown in fig. 5, in the preferred embodiment of the present invention, an annular oil inlet cavity 34 communicating with the high-speed bearing 7 is formed at one end of the bearing cover extending into the bearing mounting hole and the outer oil slinger 4 located on the same side of the high-speed bearing 7, and the oil inlet cavity 34 is communicated with the oil inlet for inputting high-pressure lubricating oil to the high-speed bearing 7.
In this embodiment, after being input from the oil inlet, the high-pressure lubricating oil first flows into the annular oil inlet cavity 34, and then flows into each ball position of the high-speed bearing 7 after being uniformly distributed under the whipping action of the outer oil slinger 4, so as to provide high-efficiency lubrication and absorb heat of the high-speed bearing 7.
As shown in fig. 5, in the preferred embodiment of the present invention, the inner oil slinger 5 and the ring 16 located on the same side of the high-speed bearing 7 form an annular oil return cavity 35 communicating with the high-speed bearing 7, and the oil return cavity 35 communicates with the oil drain port for discharging and recycling the lubricating oil.
In this embodiment, the lubricant flowing through the ball positions of the high-speed bearing 7 then flows into the annular oil return chamber 35 and finally into the oil drain port, such as the second oil drain port 27, for discharging the lubricant for recycling.
As shown in fig. 5, in the preferred embodiment of the present invention, a bearing temperature measuring port is provided through the upper portion of the bearing mounting hole, the bearing temperature measuring port is used for mounting a temperature measuring device for measuring the real-time temperature of the high-speed bearing 7, and the first bearing temperature measuring port 14 and the second bearing temperature measuring port 21 are respectively provided through the bearing mounting holes of the left casing 17 and the right casing 19 in the embodiment, so as to monitor the real-time temperature values of the two high-speed bearings 7 in time.
In addition, the one end that flywheel 6 was kept away from to left bearing cap 10 and right bearing cap 22 all is provided with windshield dish 9, windshield dish 9 middle part be provided with supply shaft coupling 1 clearance fit's centre bore, block and avoid high velocity air and dust to high speed flywheel test device's influence. And a protective cover 24 is further arranged on the right bearing cover 22, and the right bearing cover 22 and the coupler 1 are covered, so that the influence of high-speed airflow and dust on the high-speed flywheel testing device is further blocked and avoided. The top of the left shell 17 is provided with an air guide hood 18.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A novel high-speed flywheel testing device comprises a rotor and a stator and is characterized in that,
the rotor comprises a flywheel shaft (3) and a flywheel (6) which are integrally formed, high-speed bearings (7) fixed on the flywheel shaft (3) are symmetrically arranged on two sides of the flywheel (6), outer oil slingers (4) and inner oil slingers (5) are respectively arranged on two sides of the high-speed bearings (7), couplers (1) are arranged at two ends of the flywheel shaft (3), and shaft sleeves (8) are fixedly arranged between the outer oil slingers (4) and the couplers (1);
the stator comprises a left shell (17) and a right shell (19) which are detachably connected, the left shell (17) and the right shell (19) are coaxially provided with bearing mounting holes matched with the outer ring of the high-speed bearing (7), a ring (16) rotationally matched with the flywheel shaft (3) is further arranged in the bearing mounting holes, and the ring (16) is positioned on one side, facing the flywheel (6), of the high-speed bearing (7); a bearing cover is arranged in a bearing mounting hole on the other side of the high-speed bearing (7), air inlets which respectively extend to the flywheel shaft (3) and the coupling (1) are arranged in the bearing mounting hole and the upper part of the bearing cover in a penetrating manner, and oil outlets which extend to the flywheel shaft (3) and the coupling (1) are arranged in the lower part of the bearing mounting hole in a penetrating manner; and an oil inlet for inputting high-pressure lubricating oil into the high-speed bearing (7) is arranged at the lower part of the bearing cover in a penetrating manner.
2. A novel high-speed flywheel testing apparatus according to claim 1,
the shaft sleeve (8) is matched with the flywheel shaft (3) in a transition fit mode.
3. A novel high-speed flywheel testing apparatus according to claim 1,
the flywheel shaft sleeve is characterized in that the shaft sleeve (8) is fixed at a corresponding part of the flywheel shaft (3) in a shrink fit mode during assembly, and the interference magnitude of the inner diameter of the shaft sleeve (8) compared with the outer diameter of the corresponding part of the flywheel shaft (3) is 0.018 mm.
4. A novel high-speed flywheel testing apparatus according to claim 1,
and an annular air inlet groove (2) communicated with an air inlet on the bearing cover is formed in the cylindrical surface of the coupler (1) along the circumferential direction.
5. A novel high-speed flywheel testing apparatus according to claim 1,
the bearing mounting hole is characterized in that a first annular groove (29) communicated with an air inlet at the upper part of the bearing mounting hole is formed in the inner peripheral wall of the bearing mounting hole, a second annular groove (31) is formed in the inner peripheral wall of the ferrule (16) along the circumferential direction, and a plurality of communication holes (30) communicated with the first annular groove (29) and the second annular groove (31) are formed in the ferrule (16) at intervals along the circumferential direction.
6. A novel high-speed flywheel testing apparatus according to claim 5,
bearing cap with be provided with third ring channel (32) and annular oil extraction groove (33) along axial interval on the peripheral matched with internal perisporium of shaft coupling (1), third ring channel (32) are linked together with the air inlet that bearing cap upper portion runs through the setting, annular oil extraction groove (33) are linked together with the oil drain port.
7. A novel high-speed flywheel testing apparatus according to claim 1,
one end of the bearing cover extending into the bearing mounting hole and the outer oil slinger (4) positioned on the same side of the high-speed bearing (7) jointly form an annular oil inlet cavity (34) communicated with the high-speed bearing (7), and the oil inlet cavity (34) is communicated with the oil inlet and used for inputting high-pressure lubricating oil into the high-speed bearing (7).
8. A novel high-speed flywheel testing apparatus according to claim 1,
the inner oil slinger (5) and a ferrule (16) which is positioned on the same side of the high-speed bearing (7) are jointly formed with an annular oil return cavity (35) communicated with the high-speed bearing (7), and the oil return cavity (35) is communicated with the oil discharge port and used for discharging lubricating oil for recycling.
9. A novel high-speed flywheel testing apparatus according to claim 1,
the end face, extending into the bearing mounting hole, of the bearing cover positioned on one side of the left side shell (17) is provided with a plurality of counter bores at intervals along the circumferential direction, compression springs (12) are arranged in the counter bores, spring check rings (13) are arranged between the end face, extending into the bearing mounting hole, of the bearing cover and the corresponding high-speed bearing (7), one ends of the compression springs (12) abut against the bottoms of the counter bores, the other ends of the compression springs abut against the spring check rings (13), and therefore the spring check rings (13) are kept to be tightly attached to the high-speed bearing (7).
10. A novel high-speed flywheel testing apparatus according to claim 1,
and a bearing temperature measuring port is arranged on the upper part of the bearing mounting hole in a penetrating manner and is used for mounting a temperature measuring device for measuring the real-time temperature of the high-speed bearing (7).
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| JP2006003183A (en) * | 2004-06-17 | 2006-01-05 | Aisin Aw Co Ltd | Friction testing machine |
| CN2866413Y (en) * | 2005-11-30 | 2007-02-07 | 赵峰 | Screw conveyor bearing sealing device |
| CN202140499U (en) * | 2011-06-16 | 2012-02-08 | 浙江威力锻压机械有限公司 | Novel flywheel assembly |
| CN203198285U (en) * | 2013-04-10 | 2013-09-18 | 陈启升 | Flywheel support device for mechanical press |
| CN206544339U (en) * | 2017-02-08 | 2017-10-10 | 山东金辰机械股份有限公司 | A kind of lubrication leakage-proof structure of flywheel support |
| CN211121988U (en) * | 2019-11-19 | 2020-07-28 | 江苏联测机电科技股份有限公司 | Novel high-speed flywheel test device |
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| CN112179660B (en) | 2022-08-09 |
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