CN106525429B - A kind of angular contact bearing birotor testing machine - Google Patents

Abstract

A kind of angular contact bearing birotor testing machine, including base, it is separately provided for the armature spindle of installing test bearing on base, applies axial loading device, monitoring device and the lubricating system of axial load to the radial loading device of test bearing application radial load, to test bearing, armature spindle is made of inner ring armature spindle and outer ring armature spindle, test bearing is set in the test end of inner ring armature spindle, its outer ring is fixedly connected with the test end of outer ring armature spindle, is each provided with an axial loading device on the floating end of inner ring armature spindle and the floating end of outer ring armature spindle；Radial loaded bearing is additionally provided on inner ring armature spindle；It is additionally provided on the armature spindle of outer ring and accompanies examination cylinder roller bearing, the top for accompanying examination cylinder roller bearing is arranged in monitoring device.The present invention provides a kind of angular contact bearing birotor testing machine, the test suitable for high temperature, the large-scale bearing to run at high speed.

Description

An angular contact bearing double rotor testing machine

technical field

The invention relates to the technical field of bearing testing machines, in particular to an angular contact bearing double rotor testing machine.

Background technique

Bearings are important and key basic components in equipment manufacturing, which directly determine the performance, reliability and life of the equipment; due to the harsh working environment of the bearings and the complex load conditions they bear, they must be long enough or even exempt from the entire life cycle of the equipment. Maintenance and so on, in the process of design, development and production, the bearing must be verified on the testing machine to simulate the corresponding working conditions, to provide reliable test data for research, design, manufacture and use, and to provide the basis for the design, manufacture and use of bearings . The research and development, design, manufacture and test technology of high-temperature, high-speed precision inter-shaft bearings are mainly monopolized by a few foreign countries. The research and development of such testing machines in my country began in the 1970s and 1980s. Due to the constraints of design and manufacturing at that time, The inner and outer diameters of the test bearings are also limited to medium and small sizes, and the limit speed is also low, which cannot meet the current test requirements for bearings with an inner diameter greater than 110mm and an outer diameter greater than 140mm, high temperature and high speed.

Especially for angular contact bearings whose inner and outer rings rotate at the same time during operation, because they have to bear radial load and axial load at the same time, the test standard for angular contact bearings is more stringent, and there is no such thing as possible in the prior art. Double rotor testing machine for large size, high speed, high load angular contact bearing testing.

SUMMARY OF THE INVENTION

In order to solve the deficiencies in the prior art, the present invention provides an angular contact bearing double-rotor testing machine, which is suitable for the test of large-scale inter-shaft bearings running at high temperature and high speed. The inner diameter of the bearing is greater than or equal to 140mm, the oil supply temperature under the inner ring ring reaches 150°C, the working temperature reaches 260°C, and the radial load is 60KN.

In order to achieve the above object, the concrete scheme adopted in the present invention is:

An angular contact bearing double-rotor testing machine, comprising a machine base, on which are respectively provided a rotor shaft for installing a test bearing, a radial loading device for applying radial load to the test bearing, and an axial load for applying an axial load to the test bearing. Axial loading device, monitoring device and lubrication system, the rotor shaft is composed of an inner ring rotor shaft and an outer ring rotor shaft, the test bearing is sleeved on the test end of the inner ring rotor shaft, and the outer ring and the outer ring rotor shaft are in contact with each other. The test end is fixedly connected, and the floating end of the inner ring rotor shaft and the floating end of the outer ring rotor shaft are each provided with an axial loading device, respectively, through the inner ring rotor shaft and the outer ring rotor axial test bearing. Axial load; the inner ring rotor shaft is also provided with a radial loading bearing, the radial loading device is arranged above the radial loading bearing and applies a load to the radial loading bearing, and further axially tests the bearing through the inner ring rotor The radial load is transmitted; the outer ring rotor shaft is also provided with a companion cylindrical roller bearing, and the monitoring device is arranged above the companion cylindrical roller bearing.

The under-ring lubricating sleeve is sleeved on the test end of the rotor shaft of the inner ring, the test bearing is sleeved on the under-ring lubricating sleeve, and the inner ring of the test bearing passes through the third step sleeve sleeved on the replaced lubricating sleeve. Axial limit; the inner wall of the lubricating sleeve under the ring is a stepped sleeve structure, and a hydraulic oil hole communicated with the stepped sleeve structure is opened on the end wall.

The inner ring rotor shaft is a hollow shaft and has a multi-shoulder structure, the axial loading device and the radial loading bearing are respectively arranged at two shoulders, and the radial loading bearing is arranged close to the test bearing; The rotor shaft is a hollow shaft, the test end is cylindrical and the inner diameter is larger than the inner diameter of the shaft body, the transition section between the test end and the shaft body is in the shape of a conical cylinder, and the test cylindrical roller bearing is arranged between the transition section and the shaft. body intersection.

The radially loaded bearing is a cylindrical roller bearing, the outer ring is fixedly connected with the radially loaded bearing seat, the inner ring is axially limited by the second stepped sleeve, and the end of the radially loaded bearing is also provided with a radially loaded bearing. The bearing seat is fixedly connected to the radially loaded bearing oil-air lubricated oil distribution plate used to provide lubricating oil to the radially loaded bearing.

The radial loading device includes an oil cylinder bracket, the oil cylinder bracket is in the shape of an inverted "V", the bottom ends of the arms on both sides are respectively fixedly connected with the machine base, and a radial loading oil cylinder is arranged at the connection of the two arms, and the radial loading oil cylinder is installed. A sensor mounting plate is fixedly connected to the lower end of the oil cylinder plunger, and a load sensor is fixedly arranged at the lower part of the sensor mounting plate.

The auxiliary test cylindrical roller bearing is a cylindrical roller bearing, the outer ring is fixedly connected with the auxiliary test cylindrical roller bearing seat, and the inner ring is axially limited by the first stepped sleeve; There is a press cover of the auxiliary test cylindrical roller bearing seat, which is fixedly connected with the machine base; a pressure ring is arranged at each end of the test cylindrical roller bearing seat press cover, and the pressure ring is connected to the machine base. The cover and the machine seat of the auxiliary test cylindrical roller bearing seat are fixedly connected and the auxiliary test cylindrical roller bearing seat is axially limited; Connect to the test cylindrical roller bearing oil-air lubricated oil distribution plate used to supply lubricating oil to the test cylindrical roller bearing.

The outer side of the test bearing is provided with a test bearing cabin cover, which encloses a test cabin and places the test bearing in the test cabin; a sensor mounting seat is arranged on the press cover of the accompanying test cylindrical roller bearing seat, and the sensor mounting seat is connected with a The installation bracket is deep into the test bearing compartment cover; the monitoring device is composed of an infrared temperature sensor arranged on the test bearing compartment cover, a non-contact vibration sensor and a noise sensor arranged on the installation bracket.

The axial loading device applies loads to the inner ring rotor shaft and the outer ring rotor shaft through the auxiliary angular contact bearing; the outer ring of the auxiliary angular contact bearing is connected with the auxiliary angular contact bearing seat, and the auxiliary angular contact bearing The seat includes a floating bearing seat and an oil distribution plate fixing seat arranged in parallel, the outer ring of the auxiliary angular contact bearing is fixedly connected with the floating bearing seat, and a cavity between the floating bearing seat and the oil distribution plate fixing seat is provided with The oil distribution plate of the auxiliary angular contact bearing is provided with an oil inlet channel through the fixed seat of the oil distribution plate. The lubricating oil gas is sent to the oil distribution plate of the auxiliary angular contact bearing through the oil inlet and passes through the auxiliary angular contact bearing arranged inside in turn. The oil channel of the oil distribution plate and the nozzle of the oil distribution plate of the auxiliary angular contact bearing are sprayed out to lubricate the auxiliary angular contact bearing with oil and gas; the axial loading device includes an axially loaded outer gland and a shaft that are arranged in parallel and fixedly connected To load the inner gland, several hydraulic plungers and several preload springs are evenly arranged along the circumferential direction on the axially loaded inner gland. The hydraulic plungers and the preload springs apply loads to the floating bearing seat and transmit them to the test Angular contact bearings, which in turn apply axial loads through the inner ring rotor shaft and the outer ring rotor axial test bearings.

The side part of the machine base is also provided with a pipeline inlet, an oil discharge port and an oil and gas separation outlet; the machine base is also covered with an organic cover, and a number of warp reinforcement ribs and wefts are evenly arranged on the inner surface of the machine cover. A radial loading mechanism via hole is also opened on the top of the machine cover toward the reinforcing ribs; an end cover is provided at both ends of the testing machine, and a shaft end sealing disc is arranged between the end cover and the rotor shaft.

Beneficial effects:

1. The simulation of actual working conditions for large-diameter, high-temperature, high-speed, under-ring lubricated angular contact bearings is realized, and the dual-rotor structure is adopted, which can realize the same direction, same speed, same direction and different speed, and reverse direction for the inner and outer rings of the bearing at the same time. Tests for same-speed or opposite-speed rotation;

2. The double-sided axial loading device can simultaneously apply axial load to the inner ring and outer ring of the rotating angular contact bearing, or one-way loading can be selected to meet different test requirements;

3. The axial loading device adopts multiple preloading springs for preloading, the loading force is uniform, and it can be flexibly replaced to meet the needs of different angular contact bearings;

4. With the increase of the rotation speed of the rotating shaft, the axial loading adopts the multi-plunger hydraulic cylinder for follow-up loading, with high loading accuracy, good loading smoothness and fast corresponding speed, which can meet the test requirements of various types of bearings;

5. Loading is carried out by accompanying the angular contact bearing and the rotor shaft, avoiding the use of a loading sleeve, which not only simplifies the test device, but also makes the loading force more balanced and improves the loading effect;

4. The inner wall of the lubricating sleeve under the ring for the test bearing adopts a stepped structure, and the disassembly and assembly are completed by hydraulic oil injection into the stepped structure. Compared with the traditional disassembly and assembly method using the principle of thermal expansion and contraction, the test bearing is replaced. Model, only need to replace the hydraulic detachable lubricating fixed sleeve under the ring; it is not only easy to disassemble and install, but also has high positioning accuracy, which avoids stress concentration when installing the test bearing, and also avoids the shaft when the test bearing is disassembled. damage such as scratches;

5. By setting the test bearing compartment cover, the effective isolation of the test bearing lubricating oil and the test environment is realized, and the influence of the external lubricating oil on the test bearing lubrication detection is avoided;

6. The axial loading floating unit is equipped with a linear bearing, which improves the positioning accuracy and radial stiffness, and effectively reduces the frictional resistance;

7. The axial loading device is also equipped with a force sensor, which can monitor the loading force in real time and ensure the reliable loading operation of the testing machine;

8. The testing machine adopts a sealed structure, which can not only improve the overall stability of the testing machine, reduce the interference of the external environment, but also effectively collect and process all the exhaust gas and oil fume generated during the testing process to reduce environmental pollution;

9. The radial loading mechanism is installed on the base at the lower part of the body seat, and the radial loading bearing is provided with a buffer pad, which adds a shock-absorbing and wear-resistant link to the loading link, which can prevent the collection of the loading force signal due to vibration, The measurement has an impact, and at the same time, the impact of vibration outside the shafting on the shafting is effectively avoided;

10. The radial loading mechanism passes through the cover, so that the cover is not subjected to radial loading force. When the test speed and temperature are low, the test debugging can be carried out without installing the cover, which simplifies the test process and improves the test efficiency. ;

11. Non-contact temperature, vibration and noise sensors are used in the rotating parts of the test end, and the signals are collected in a timely, accurate and reliable manner. Moreover, each non-contact sensor is not only easy to install and disassemble, but also has a special airway, which can effectively prevent the pollution of each sensor. , to ensure that it can work normally under the working environment of 260 °C;

12. The oil supply oil injection channel under the test bearing ring is integrated with the lower cover plate of the test bearing chamber, and there are 4 oil inlet channels and 9 nozzle holes inside, which not only makes the structure more compact, convenient for disassembly and debugging, but also It can be flexibly adjusted and transformed according to the different requirements of the test bearing for the lubrication and oil supply under the ring;

13. The optimized support position of each bearing in the shaft system not only ensures the effective loading of the test bearing, but also improves the force of the accompanying cylindrical roller bearing and radially loaded bearing;

14. Each bearing is axially limited by a stepped sleeve, and the stepped sleeve is set on the side of the bearing that is not subject to axial load. There is also an oil filling port on the stepped sleeve, which can be removed by hydraulic means. It avoids stress concentration and protects the spindle from damage;

15. The lubricating sleeve under the ring and the oil filling ports on the stepped sleeve are arranged at both ends of a diameter, which can not only ensure the stable structure and force of the stepped sleeve during rotation, but will not affect the dynamic balance due to structural asymmetry;

16. The supporting device of each component adopts transition connection. When changing the type of the cylindrical roller bearing with the test according to the test needs, only the transition tooling needs to be replaced, which not only greatly reduces the test cost, but also adapts to the test of various types of bearings within a certain diameter range. needs.

Description of drawings

Fig. 1 is the overall structure schematic diagram;

Figure 2 is a schematic diagram of the installation of the test bearing, the radially loaded bearing and the accompanying test cylindrical roller bearing;

Figure 3 is a schematic structural diagram of an axial loading device;

Fig. 4 is the schematic diagram of radial loading structure;

Figure 5 is a schematic diagram of the machine base structure;

Figure 6 is a schematic diagram of the structure of the cover.

Reference numerals: 1. Machine base, 2. Axial loading device, 201, Axial loading outer gland, 202, Hydraulic plunger, 203, Axial loading inner gland, 204, Preload spring, 3. Shaft end Sealing disc, 4. Outer ring rotor shaft, 5. Accompanying test angular contact bearing, 6. Accompanying test angular contact bearing seat, 7. Machine cover, 8. Accompanying test cylindrical roller bearing, 9. Test bearing, 10. Radial Loading Bearing, 11, Radial Loading Device, 1101, Cylinder Support, 1102, Pressure Sensor, 1103, Sensor Mounting Plate, 1104, Cylinder Plunger, 1105, Radial Loading Cylinder, 12, First Step Sleeve, 13, Accompanying Test Cylindrical roller bearing oil and gas lubricating oil distribution plate, 14. Accompanying test cylindrical roller bearing seat, 15. Accompanying test cylindrical roller bearing seat gland, 16. Test bearing hatch cover, 17. Radial load bearing seat, 18, Diameter Oil-air lubrication oil distribution plate for loading bearing, 19, second step sleeve, 20, inner ring rotor shaft, 21, third step sleeve, 22, lubricating sleeve under ring, 23, sensor mounting seat, 24, fourth step sleeve, 25. Floating bearing seat, 26. Axial loading integral gland, 27. Oil distribution plate fixing seat, 28. Spacer, 29. Accompanying test angular contact bearing oil distribution plate nozzle, 30. Accompanying test angular contact bearing oil distribution plate Oil and gas passage, 31, accompany test angular contact bearing oil distribution plate, 32, loading force sensor, 33, pressure bearing ring, 34, oil inlet passage, 35, end cover, 36, pressure ring.

Detailed ways

Embodiments of the present invention will be specifically described below with reference to the accompanying drawings.

As shown in FIG. 1 , an angular contact bearing dual-rotor testing machine includes a machine base 1 , on which a rotor shaft for installing a test bearing 9 and a radial load for applying a radial load to the test bearing 9 are respectively arranged on the machine base 1 . Loading device 11, axial loading device 2 for applying axial load to the test bearing 9, monitoring device and lubrication system, the rotor shaft is composed of an inner ring rotor shaft 20 and an outer ring rotor shaft 4, and the test bearing 9 is sleeved inside The outer ring of the test end of the rotor shaft 20 is fixedly connected with the test end of the outer ring rotor shaft 4 .

As shown in FIGS. 2 to 6 , an axial loading device 2 is respectively provided on the floating end of the inner rotor shaft 20 and the floating end of the outer rotor shaft 4 , respectively passing through the inner rotor shaft 20 and the outer rotor shaft 4 . The shaft 4 applies an axial load in the opposite direction to the test bearing 9 . By adopting the two-way axial loading method, the axial loading method can be changed according to the needs of different test bearings 9 , and the one-way loading or two-way loading method can be selected to meet the test loading requirements of various test bearings 9 . The load is applied to the test bearing 9 in the axial direction of the rotor. Compared with the traditional method of using the loading sleeve to directly load the bearing from the side of the bearing rotor, it not only realizes the loading of the inner and outer rings while rotating the bearing, but also avoids the rotation of the test bearing 9 by the loading sleeve. The impact of the bearing can be tested more accurately.

The inner ring rotor shaft 20 is also provided with a radial loading bearing 10 , and the radial loading device 11 is arranged above the radial loading bearing 10 and applies a load to the radial loading bearing 10 , and further loads the radial loading bearing 10 through the inner ring rotor shaft 20 . The test bearing 9 transmits radial load; the outer ring rotor shaft 4 is also provided with a test cylindrical roller bearing 8 , and the monitoring device is arranged above the test cylindrical roller bearing 8 .

The under-ring lubricating sleeve 22 is sleeved on the test end of the inner ring rotor shaft 20 , the test bearing 9 is sleeved on the under-ring lubricating sleeve 22 , and the inner ring of the test bearing 9 is sleeved on the replacement lubricating sleeve 22 . The upper third stepped sleeve 21 is axially limited; the inner wall of the lower ring lubricating sleeve 22 is a stepped sleeve structure, and the end wall is provided with a hydraulic oil hole communicating with the stepped sleeve structure, which can be installed or removed by hydraulic means. . There is one hydraulic oil hole in total. In order to ensure the dynamic balance accuracy of the lubricating sleeve 22 under the ring and avoid large vibration caused by unbalanced weight distribution during high-speed rotation, a balance hole is also opened, the size of which is the same as the hydraulic oil hole. However, it does not communicate with the stepped sleeve structure, and is symmetrically arranged with the hydraulic oil hole about the axis of the lower ring lubricating sleeve 22 . The test bearing 9 adopts the method of under-ring lubrication, and the oil consumption is much less than that of the oil injection lubrication method commonly used in the prior art. The power loss caused by the dynamic stirring of the oil is also less, and the heating of the bearing is also greatly improved. Improvement, even the inner ring temperature may be lower than the outer ring and reduce the bearing failure rate. A stepped sleeve structure is arranged on the inner wall of the under-ring lubricating sleeve 22, and oil can be injected into the stepped sleeve structure through the hydraulic oil hole, and the disassembly and assembly are carried out by means of hydraulic pressure. The specific process is as follows: when installing, first heat the lubricating sleeve 22 under the ring, and then put it on the rotor shaft 20 of the inner ring, inject installation oil into the hydraulic oil hole, and pressurize the lubricating sleeve under the ring on the outside. After the under-ring lubricating sleeve 22 cools down, stop oiling, then the under-ring lubricating sleeve 22 is pressed against the inner ring rotor shaft 20 to complete the installation; when disassembling, inject disassembly oil into the hydraulic oil hole, and under the action of the oil The lower lubricating sleeve 22 expands, that is, slides out automatically. Compared with the traditional method of installing the shaft sleeve based on the principle of thermal expansion and cold contraction, it can eliminate the influence of the stress concentration generated by the parts during the shrinkage process on the rotating shaft, and avoid the damage of the rotating shaft such as scratches. For different types of bearings, under-the-ring lubricating sleeves of different thicknesses can be made, so that the under-ring lubricating sleeve can be replaced to fit different tested bearings, and there is no need to replace the rotating shaft every time the tested bearing is replaced, which can greatly reduce the cost of testing. The cost can also shorten the test cycle.

The inner ring rotor shaft 20 is a hollow shaft and has a multi-shoulder structure. The axial loading device 2 and the radial loading bearing 10 are respectively arranged at two shoulders, and the radial loading bearing 10 is close to the test bearing 9 set; the outer ring rotor shaft 4 is a hollow shaft, the test end is cylindrical and the inner diameter is larger than the inner diameter of the shaft body, and the transition section between the test end and the shaft body is in the shape of a conical cylinder, and the accompanying test cylindrical roller bearing 8 is set at the intersection of the transition section and the shaft body. In order to recover the lubricating oil splashed from the test bearing 9 in time, a number of oil return passages are provided through the test end of the outer ring rotor shaft 4. The direction of the oil return passages is parallel to the outer wall of the transition section, and splashes out from the test bearing 9. After the lubricating oil is sprinkled on the transition section of the outer ring rotating shaft 4, it is thrown out through the oil return passage under the action of centrifugal force, which can avoid the increase of resistance caused by the failure of the lubricating oil to be recovered in time, and enter the outer ring rotor shaft 4 or the inner ring rotor. The hollow shaft center of the shaft 20 affects the shafting and other problems, and can also accelerate the recovery of the lubricating oil and reduce the heating time of the high-temperature lubricating oil on the working parts.

The radial loading bearing 10 is a cylindrical roller bearing, the outer ring is fixedly connected with the radial loading bearing seat 17, the inner ring is axially limited by the second stepped sleeve 19, and the end of the radial loading bearing 10 is also provided with a The radial load bearing oil-air lubrication oil distribution plate 18 is fixedly connected with the radial load bearing seat 17 for supplying lubricating oil to the radial load bearing 10 . The end of the radial loading bearing oil-air lubrication oil distribution plate 18 away from the test bearing 9 is provided with four oil inlet holes. , each oil channel corresponds to a nozzle, and the nozzle faces the outer ring raceway of the radially loaded bearing 10 . The radial load bearing 10 adopts a stepped sleeve for axial positioning, which can ensure higher dynamic balance accuracy compared with a threaded lock nut.

The radial loading device 11 includes an oil cylinder support 1101, the oil cylinder support 1101 is in the shape of an inverted "V", the bottom ends of the arms on both sides are respectively fixedly connected with the base 1, and a radial loading oil cylinder 1105 is arranged at the connection of the arms on both sides. A sensor mounting plate 1103 is fixedly connected to the lower end of the cylinder plunger 1104 of the radially loaded oil cylinder 1105, and a load sensor 1102 is fixedly arranged at the lower part of the sensor installation plate 1103. The radially loaded oil cylinder 1105 drives the oil cylinder plunger 1104 and drives the load cell 1102 A radial load is applied to the radially loaded bearing housing 17 . A buffer pad installation groove is also dug on the side wall of the oil-air lubricated oil distribution plate 18 of the radial loading bearing, and an installation groove communicated with the radial loading bearing seat 17 is also arranged. A buffer pad is arranged in the middle, and the radial load is applied to the buffer pad, which plays the role of shock absorption and wear resistance, and can prevent the radial load bearing 10 and the radial load bearing seat 17 from generating large axial deviation.

The auxiliary test cylindrical roller bearing 8 is a cylindrical roller bearing, the outer ring is fixedly connected with the auxiliary test cylindrical roller bearing seat 14, and the inner ring is axially limited by the first stepped sleeve 12; The upper side of 14 is also provided with a test cylindrical roller bearing cover 15, which is fixedly connected with the machine base 1; There is a pressure ring 36, the pressure ring 36 is fixedly connected with the pressure cover 15 of the auxiliary test cylindrical roller bearing seat and the machine base 1 and will limit the axial position of the auxiliary test cylindrical roller bearing seat 14; in the auxiliary test cylindrical roller bearing 8 The end of the bearing is provided with an auxiliary test cylindrical roller bearing oil and gas lubricating oil distribution plate 13 which is fixedly connected with the auxiliary test cylindrical roller bearing seat 14 and is used to provide lubricating oil to the auxiliary test cylindrical roller bearing 8 . The accompanying test cylindrical roller bearing 8 is connected with the machine base 1 by means of a transition sleeve (and the accompanying test cylindrical roller bearing seat 14). When changing the model of the accompanying test cylindrical roller bearing 8 according to the test needs, only the transition sleeve tooling needs to be replaced. The accompanying test cylindrical roller bearing 8 is lubricated with oil and gas, which improves the lubrication effect of the accompanying test cylindrical roller bearing 8, reduces the friction and heat generation of the accompanying test cylindrical roller bearing 8, effectively improves the high-speed rotary motion accuracy of the shaft system, and prolongs the the service life of the testing machine. As with the radial load bearing 10 , a stepped sleeve is used for axial positioning, and the effect is the same. The disassembly and assembly method of each step sleeve is the same as that of replacing the lubricating sleeve 22 , and the setting method of the oil filling hole can also be the same, or the oil filling hole can be arranged in the radial direction.

The outer side of the test bearing 9 is provided with a test bearing cabin cover 16, which encloses a test cabin and places the test bearing 9 in the test cabin; a sensor mounting seat 23 is provided on the pressure cover 15 of the accompanying test cylindrical roller bearing seat. A mounting bracket is connected to the mounting seat 23, and the mounting bracket penetrates into the test bearing compartment cover 16; the monitoring device consists of an infrared temperature sensor arranged on the test bearing compartment cover 16, a non-contact vibration sensor arranged on the mounting bracket, and a noise sensor. sensor composition. The rotating parts of the test end adopt non-contact temperature, vibration and noise sensors, and the collected signals are timely, accurate and reliable; each non-contact sensor is not only easy to install and disassemble, but also can ensure normal operation in the environment of 260 ° C after testing.

The axial loading device 2 applies loads to the inner ring rotor shaft 20 and the outer ring rotor shaft 4 through the auxiliary angular contact bearing 5 , and the lubrication method of the auxiliary angular contact bearing 5 is preferably oil-air lubrication. The outer ring of the accompanying test angular contact bearing 5 is connected with the accompanying test angular contact bearing seat 6, and the accompanying test angular contact bearing seat 6 includes a floating bearing seat 25 and an oil distribution plate fixing seat 27 arranged in parallel. The outer ring of the contact bearing 5 is fixedly connected with the floating bearing seat 25, and an accompanying angular contact bearing oil distribution plate 31 is arranged in the cavity between the floating bearing seat 25 and the oil distribution plate fixing seat 27. 27 is provided with an oil inlet passage 34 through it, and the lubricating oil gas is fed into the auxiliary angular contact bearing oil distribution plate 31 through the oil and gas inlet passage 34, and passes through the oil and gas passage 30 of the auxiliary angular contact bearing oil distribution plate arranged inside in turn and contacts the auxiliary angular contact bearing. The bearing oil distribution plate nozzle 29 is sprayed out, and the lubricating oil gas is sprayed to the auxiliary angular contact bearing 5 for lubrication; the axial loading device 2 includes an axial loading outer end cover 301 arranged in parallel and fixedly connected and an axial loading inner pressure Cover 203, on the same pitch circle of the axially loaded inner pressure cover 203, a plurality of hydraulic plungers 202 and a plurality of preload springs 204 are evenly and alternately arranged in the circumferential direction. The load is applied and transmitted to the auxiliary test angular contact bearing 5 , and an axial load is further applied to the test bearing 9 through the inner ring rotor shaft 20 and the outer ring rotor shaft 4 .

During implementation, the auxiliary angular contact bearing 5 is preferably an angular contact bearing that can bear a relatively large axial load. The hydraulic plunger 202 is arranged in the hydraulic plunger installation hole, and the hydraulic plunger installation hole penetrates the two end walls of the axially loaded inner pressure cover 203, and the axially loaded outer pressure cover is also provided with a number of penetrating holes. The hydraulic oil passage is connected with an external oil supply pipeline. The preload spring 204 is arranged in the preload spring installation hole, and the preload spring installation hole only penetrates the side of the axially loaded inner pressure cover 203 close to the angular contact bearing seat 6 . During the test, the preload spring 204 provides the preload to the angular contact bearing 5 to provide the initial preload, and the hydraulic plunger 202 is used to provide the axial load during the test. An annular groove is dug on the side of the floating bearing seat 25 close to the axial loading device 2, and a pressure bearing ring is arranged in the groove, and the axial load output by the hydraulic plunger 203 and the preload spring 204 acts both On the pressure bearing ring, there are several pressure sensors (arranged inside the floating bearing seat 25) at the non-stressed end of the pressure bearing ring. The pressure sensors collect the data of the axial load and communicate with the computer outside the testing machine through the line The monitoring device is connected to detect and control the amount of axial load at any time.

The side part of the machine base 1 is also provided with a pipeline inlet 101, an oil discharge port 102 and an oil-gas separation outlet 103; the machine base 1 is also covered with an organic cover 7, and several The warp and weft reinforcing ribs are also provided with radial loading mechanism via holes 701 on the top of the machine cover 7; both ends of the testing machine are also provided with an end cover 35, which is connected to the rotor shaft. A shaft end seal sealing disc 3 is arranged therebetween. The radial loading oil cylinder 1105 protrudes from the cover through hole 701, so that the cover 7 will not be subjected to radial loading force, avoid the influence of the vibration of the cover on the radial loading, and make disassembly, installation and debugging more convenient. Convenient, under the condition of low-speed test, the test and debugging can be carried out without installing the cover 7, so as to reduce the test steps and improve the work efficiency. The test machine is set to a sealed structure, which can not only keep the test environment free from external interference, improve the test accuracy, but also prevent the wastes such as oil and gas generated from the test from escaping and causing environmental pollution. It can be collected and processed before being discharged.

In terms of the driving device, the floating ends of the inner rotor shaft 20 and the outer rotor shaft 4 are respectively connected to the variable frequency motor through couplings. A test of the same velocity and the same velocity in different directions. In order to simplify the test preparation process, the rotation direction of the inner ring rotor shaft 20 or the outer ring rotor shaft 4 can be fixed, and only the other rotor shaft needs to be adjusted.

Claims (7)

1. An angular contact bearing double-rotor testing machine, comprising a machine base (1), and a rotor shaft for installing a test bearing (9) is respectively arranged on the machine base (1), and a radial direction is applied to the test bearing (9). Radial loading device (11) for load, axial loading device (2) for applying axial load to test bearing (9), monitoring device and lubrication system, said rotor shaft consists of inner ring rotor shaft (20) and outer ring It consists of a rotor shaft (4), a test bearing (9) is sleeved on the test end of the inner ring rotor shaft (20), and its outer ring is fixedly connected with the test end of the outer ring rotor shaft (4), and is characterized by: An axial loading device (2) is respectively provided on the floating end of the inner ring rotor shaft (20) and the floating end of the outer ring rotor shaft (4), respectively passing through the inner ring rotor shaft (20) and the outer ring rotor shaft (4) Apply an axial load in the opposite direction to the test bearing (9); The inner ring rotor shaft (20) is also provided with a radial loading bearing (10), and the radial loading device (11) is arranged above the radial loading bearing (10) and applies to the radial loading bearing (10) load, and further transmit radial load to the test bearing (9) through the inner ring rotor shaft (20); A companion cylindrical roller bearing (8) is also provided on the outer ring rotor shaft (4), and the monitoring device is arranged above the companion cylindrical roller bearing (8); The accompanying test cylindrical roller bearing (8) is a cylindrical roller bearing, the outer ring is fixedly connected with the accompanying test cylindrical roller bearing seat (14), and the inner ring is axially limited by the first stepped sleeve (12); The upper side of the test cylindrical roller bearing seat (14) is also provided with an accompanying test cylindrical roller bearing seat gland (15), and the accompanying test cylindrical roller bearing seat gland (15) is fixedly connected with the machine base (1); A pressure ring (36) is provided at both ends of the test cylindrical roller bearing housing gland (15), and the pressure ring (36) is fixed to the accompanying test cylindrical roller bearing housing gland (15) and the machine base (1). Connect and axially limit the auxiliary test cylindrical roller bearing seat (14); at the end of the auxiliary test cylindrical roller bearing (8), a fixed connection with the auxiliary test cylindrical roller bearing seat (14) is arranged for the auxiliary test cylindrical roller bearing seat (14). The test cylindrical roller bearing (8) provides lubricating oil to accompany the test cylindrical roller bearing oil-air lubrication oil distribution plate (13); The side part of the machine base (1) is further provided with a pipeline inlet (101), an oil discharge port (102) and an oil-gas separation outlet (103); the machine base (1) is also covered with an organic cover (7), A number of warp and weft reinforcing ribs are evenly arranged on the inner surface of the machine cover (7), and a radial loading mechanism through hole (701) is also opened on the top of the machine cover (7); the testing machine Both ends of the rotor are also provided with an end cover (33), and a shaft end seal sealing disc (3) is arranged between the end cover (33) and the rotor shaft. 2. An angular contact bearing dual-rotor testing machine according to claim 1, characterized in that: an under-ring lubricating sleeve (22) is sleeved on the testing end of the inner ring rotor shaft (20), and the testing The bearing (9) is sleeved on the lubricating sleeve (22) under the ring, and the inner ring of the test bearing (9) is axially limited by the third stepped sleeve (21) sleeved on the lubricating sleeve (22) under the ring; The inner wall of the under-ring lubricating sleeve (22) is a stepped sleeve structure, and a hydraulic oil hole communicated with the stepped sleeve structure is opened on the end wall. 3. An angular contact bearing double rotor testing machine according to claim 1, characterized in that: the inner ring rotor shaft (20) is a hollow shaft and has a multi-shaft shoulder structure, and the axial loading device (20) is a hollow shaft. 2) The radial loading bearing (10) and the radial loading bearing (10) are respectively arranged at the two shaft shoulders, and the radial loading bearing (10) is arranged close to the test bearing (9); the outer ring rotor shaft (4) is a hollow shaft, and its test The end is cylindrical and the inner diameter is larger than the inner diameter of the shaft body, the transition section between the test end and the shaft body is in the shape of a conical cylinder, and the auxiliary test cylindrical roller bearing (8) is arranged at the intersection of the transition section and the shaft body. 4. An angular contact bearing dual-rotor testing machine according to claim 1, characterized in that: the radially loaded bearing (10) is a cylindrical roller bearing, and the outer ring is fixed to the radially loaded bearing seat (17) Connection, the inner ring is axially limited by the second stepped sleeve (19), and the end of the radial loading bearing (10) is also provided with a fixed connection with the radial loading bearing seat (17) for radial loading of the bearing (17). 10) Radial load bearing oil-air lubricated oil distribution pan (18) that supplies lubricating oil. 5. An angular contact bearing dual-rotor testing machine according to claim 4, characterized in that: the radial loading device (11) comprises an oil cylinder bracket (1101), and the oil cylinder bracket (1101) is in the shape of an inverted "V" , the bottom ends of the arms on both sides are respectively fixedly connected with the machine base (1), a radial loading oil cylinder (1105) is arranged at the connection of the two arms, and the lower end of the cylinder plunger (1104) of the radial loading oil cylinder (1105) is fixed A sensor mounting plate (1103) is connected, the lower part of the sensor mounting plate (1103) is fixedly provided with a load sensor (1102), the radial loading oil cylinder (1105) drives the oil cylinder plunger (1104), and drives the load sensor (1102) to The radial load is applied to the radially loaded bearing housing (17). 6. An angular contact bearing dual-rotor testing machine according to claim 1, characterized in that: the outer side of the test bearing (9) is provided with a test bearing hatch cover (16), which encloses the test chamber and stores the test bearing. (9) Placed in the test chamber; a sensor mounting seat (23) is arranged on the test cylindrical roller bearing housing gland (15), and a mounting bracket is connected to the sensor mounting seat (23), and the mounting bracket penetrates into the test bearing In the hatch cover (16); the monitoring device is composed of an infrared temperature sensor provided on the test bearing hatch cover (16), a non-contact vibration sensor and a noise sensor provided on the installation bracket. 7. An angular contact bearing dual-rotor testing machine according to claim 1, characterized in that: the axial loading device (2) passes the test angular contact bearing (5) to the inner ring rotor shaft (20) and the inner ring rotor shaft (20). The outer ring rotor shaft (4) applies the load; The outer ring of the auxiliary angular contact bearing (5) is connected with the auxiliary angular contact bearing seat (6), and the auxiliary angular contact bearing seat (6) includes a floating bearing seat (25) arranged in parallel and an oil distribution plate for fixing A seat (27), the outer ring of the accompanying angular contact bearing (5) is fixedly connected with the floating bearing seat (25), in the cavity between the floating bearing seat (25) and the oil distribution plate fixing seat (27) An oil distribution plate (31) for the auxiliary test angular contact bearing is provided, and an oil inlet channel (34) is provided through the oil distribution plate fixing seat (27), and the lubricating oil gas is fed into the auxiliary test angular contact bearing through the oil inlet channel (34). The oil distribution plate (31) is sprayed out after passing through the oil channel (30) of the auxiliary angular contact bearing oil distribution plate and the nozzle (29) of the auxiliary angular contact bearing oil distribution plate arranged inside in turn. ) for oil-air lubrication; The axial loading device (2) comprises an axially loaded outer gland (301) and an axially loaded inner gland (203) arranged in parallel and fixedly connected, and the axially loaded inner gland (203) is in a circumferential direction A plurality of hydraulic plungers (202) and a plurality of preload springs (204) are evenly arranged, and the hydraulic plungers (202) and the preload springs (204) apply loads to the floating bearing seat (25) and transmit them to the angular contact with the test The bearing (5), in turn, applies an axial load to the test bearing (9) through the inner ring rotor shaft (20) and the outer ring rotor shaft (4).