CN114112395B - Multi-working-condition vibration-damping loading thrust sliding bearing test bed - Google Patents
Multi-working-condition vibration-damping loading thrust sliding bearing test bed Download PDFInfo
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- CN114112395B CN114112395B CN202111572618.1A CN202111572618A CN114112395B CN 114112395 B CN114112395 B CN 114112395B CN 202111572618 A CN202111572618 A CN 202111572618A CN 114112395 B CN114112395 B CN 114112395B
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
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Abstract
The invention provides a multi-working-condition vibration reduction loading thrust sliding bearing test bed which comprises an installation platform, a working condition transformation structure, a torsion sensor, a pressure sensor and a thermocouple, wherein the working condition transformation structure, the torsion sensor, the pressure sensor and the thermocouple are installed on the installation platform, the inside of the working condition transformation structure comprises a water tank, a water inlet and a water outlet are respectively arranged on two sides of the water tank, the thrust sliding bearing is arranged inside the water tank, the pressure sensor is installed at the bottom end of a connecting disc, and the torsion sensor is connected with the bottom end of the pressure sensor through a pressure supporting seat. According to the invention, the external circulating flow pump is butted through the water inlet and the rubber tube, and the fluid with different flow rates is transmitted to the inside of the water tank by utilizing the self characteristics of the flow pump, so that the measuring environment of the thrust sliding bearing in the water tank achieves the effect of simulating different working conditions, and the device can test the performance of the thrust sliding bearing under different working conditions.
Description
Technical Field
The invention relates to the technical field of bearing testing machines, in particular to a multi-working-condition vibration reduction loading thrust sliding bearing test bed.
Background
The sliding thrust sliding bearing is generally composed of a plurality of fixed or freely-inclined tiles, has large bearing capacity, good stability and high self-centering capacity, and is widely applied to high-speed and heavy-load machinery such as a turbonator, an air blower and the like.
The working condition of the bearing in the using process is complex, due to the machining and installation errors of a plurality of pads, the deformation of the thrust disc, the rotor and the pads and the like, the local bearing capacity of a certain pad is large, the temperature rise is high, the host machine finally works abnormally, the abrasion of the sliding bearing is caused slightly, the pads are burnt out seriously, the axle is held, and other serious accidents are caused, once the accident happens, the machine is stopped for renovation, the production is delayed, and the huge economic loss is caused. Therefore, a multi-working-condition vibration reduction loading thrust sliding bearing test bed capable of simulating actual working conditions is needed to evaluate the performance of the bearing in the using process;
patent document CN205001376U discloses that a tilting pad bearing capable of monitoring the residual axial force of a pump on line can directly display the axial force value by drilling a hole on the tilting pad bearing pad, and installing a measuring element can detect the axial force value of the pump on line, but the performance data except the axial force cannot be output, and meanwhile, the mounting environment of the tilting pad bearing is fixed, and the data in other environments cannot be detected.
Patent document CN112284597B discloses a pressure detecting device for a static pressure supported tilting pad bearing, which can monitor the residual axial force of a pump on line, after a bearing body is connected with a guide sleeve, an oil pressure pushes a support plate to move upwards along a first guide pillar and a second guide pillar through a communicating pipe, then the support plate pushes a second piston rod, and then the second piston rod transmits the pressure to a second detector, so that the pressure of the bearing body is detected in real time, the minimum pressure of the bearing body can be detected, the maximum pressure of the bearing body can be detected, but the pressure of the tilting pad bearing under various working conditions cannot be simulated to perform pressure testing on the tilting pad bearing, and meanwhile, other performance parameters of the tilting pad bearing except for the pressure testing cannot be obtained.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a multi-working-condition vibration reduction loading thrust sliding bearing test bed.
The invention provides a multi-working-condition vibration reduction loading thrust sliding bearing test bed which comprises an installation table, a working condition transformation structure, a torsion sensor, a pressure sensor and a thermocouple, wherein the working condition transformation structure, the torsion sensor, the pressure sensor and the thermocouple are installed on the installation table;
preferably, a shell cover is installed on the water tank, the working condition transformation structure comprises a water blocking chamber, and a water leakage port is installed at the bottom end of one side of the water blocking chamber;
preferably, a positioning shaft sleeve is mounted at the top end of the shell cover, a fixed disc is mounted at the bottom end of the positioning shaft sleeve, a thrust disc is arranged at the bottom end of the fixed disc, a fixed bolt is arranged at the top end of the positioning shaft sleeve, and a protection structure is mounted at the top end of the fixed bolt;
preferably, the protection structure comprises a spring butt joint seat, a deformation spring is arranged in the spring butt joint seat, a spring retaining seat is sleeved on the surface of the deformation spring, and a spring base is installed at the top end of the deformation spring;
preferably, a variable frequency motor is mounted in the middle of the spring base, a telescopic main shaft is mounted at the bottom end of the variable frequency motor, a rotating shaft is arranged below the telescopic main shaft, a taper shank is mounted at the bottom end of the rotating shaft, and a connecting pressure plate is mounted at the bottom end of the taper shank;
preferably, a plurality of groups of the deformation springs are arranged between the spring base and the spring butt-joint seat, and the plurality of groups of the deformation springs are arranged between the spring base and the spring butt-joint seat at equal intervals;
preferably, the spring butt joint seat and the spring base are in a telescopic shape;
preferably, a deep groove ball shaft is arranged between the mounting table and the connecting disc, and a rotating structure is formed between the connecting disc and the mounting table;
preferably, the water retaining chamber is wrapped on the surface of the water tank;
preferably, a plurality of groups of thermocouples are arranged inside the thrust sliding bearing, and the plurality of groups of thermocouples are installed at the bottom of each thrust pad through blind holes;
compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, an external circulating flow pump is butted through the water inlet and the rubber tube, fluid with different flow rates is transmitted to the inside of the water tank by utilizing the self characteristics of the flow pump, so that the measuring environment of the thrust sliding bearing in the water tank is simulated under different working conditions, then the fluid flying out of the water tank is received by utilizing the water blocking chamber and is discharged from the position of the water leakage port, and the phenomenon that the fluid flies when the thrust disc rotates in the water tank is avoided, so that the device can test the performance of the thrust sliding bearing under different working conditions;
2. according to the invention, by utilizing the arrangement of the deformation spring in the spring base and the spring butt-joint seat, after the deformation spring is compressed by external force, the spring butt-joint seat is driven to stretch in the spring base through the reset elastic function of the deformation spring, and meanwhile, the longitudinal force borne by the positioning shaft sleeve is buffered, so that the service life of the device is prolonged;
3. according to the invention, through the arrangement of the thermocouple, the torque sensor and the pressure sensor, the data of temperature, pressure and torque can be respectively measured, meanwhile, the friction coefficient of the bearing is obtained through numerical value calculation, and then the collection of various data is carried out on the test bed, so that the versatility of the test bed is realized;
drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic view of the main structure of the present invention;
FIG. 2 is an enlarged view of the structure at A in FIG. 1 according to the present invention;
the figures show that: 1. a variable frequency motor; 2. a protective structure; 201. a spring mount; 202. a spring docking station; 203. a spring retention seat; 204. a deformation spring; 3. a bearing body; 4. a fixing bolt; 5. positioning the shaft sleeve; 6. a working condition changing structure; 601. a water retaining chamber; 602. a water tank; 603. a water outlet; 604. a housing cover; 605. a water leakage port; 606. a water inlet; 7. outputting the pressure; 8. outputting the torque force; 9. a transmission shaft; 10. an installation table; 11. a torque sensor; 12. a tapered roller bearing; 13. a pressure support seat; 14. a pressure sensor; 15. a coupling disk; 16. a deep groove ball shaft; 17. a thrust sliding bearing; 18. a thermocouple; 19. a thrust disc; 20. fixing the disc; 21. connecting a pressure plate; 22. a taper shank; 23. a rotating shaft; 24. and a telescopic main shaft.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the invention.
Referring to fig. 1, the present invention provides: the utility model provides a multiplex condition damping loading thrust sliding bearing test bench includes operating mode transform structure 6, torque sensor 11, pressure sensor 14 and thermocouple 18, operating mode transform structure 6's inside is including water tank 602, the both sides of water tank 602 are provided with water inlet 606, delivery port 603 respectively, and water inlet 606 can be with the fluid transmission of different velocity of flow, and the inside of water inlet 606 is provided with thrust sliding bearing 17, and water inlet 606 can let in the fluid of different velocity of flow and enter into in the water tank 602, makes the inside different velocity of flow environment that has of water tank 602, and thrust sliding bearing 17's intermediate position department all is provided with the thermocouple 18 that turns into the temperature, and the below of water tank 602 is installed and is turned into pressure sensor 14 of signal of telecommunication, and the bottom of pressure sensor 14 is provided with torque sensor 11 that turns into the signal of telecommunication with the pivoted size, and torque sensor 11, pressure sensor 14 and thermocouple 18 can measure the thrust sliding bearing 17 of placing under different fluids respectively, installs shell lid 604 on the water tank 602, and operating mode transform structure 6 includes water blocking room 601, and the bottom of water retaining chamber 601 one side is installed the mouth of leaking, and shell lid is installed on the top of shell 604 is installed with locating shaft sleeve 605, and locating sleeve 5, and pressure sensor 20, the bottom end of fixed disk 15 is provided with pressure sensor 13, the bottom connection supporting disk 15.
The water blocking chamber 601 is wrapped on the surface of the water tank 602, and further receives the fluid flying out of the water tank 602;
referring to fig. 1 and 2, a protective structure 2 is mounted at the top end of a fixing bolt 4, the protective structure 2 includes a spring abutting seat 202, a deformation spring 204 is disposed inside the spring abutting seat 202, a spring holding seat 203 is sleeved on the surface of the deformation spring 204, and a spring base 201 is mounted at the top end of the deformation spring 204;
a plurality of groups of deformation springs 204 are arranged between the spring base 201 and the spring butt-joint seat 202, the plurality of groups of deformation springs 204 are arranged between the spring base 201 and the spring butt-joint seat 202 at equal intervals, and the spring butt-joint seat 202 and the spring base 201 are in a telescopic shape; and the force of the variable frequency motor 1 driving the thrust disc 19 to rotate can be partially offset.
Referring to fig. 1, a deep groove ball shaft 16 is arranged between a mounting table 10 and a connecting disc 15, the connecting disc 15 and the mounting table 10 are in a rotating structure, the lower part of a pressure sensor 14 is connected with a torque sensor 11 through a mounting seat, components including a bearing, a flat plate, a water tank 602, the pressure sensor 14 and the like can rotate circumferentially under the driving of friction torque, a plurality of groups of thermocouples 18 are arranged in a thrust sliding bearing 17, the plurality of groups of thermocouples 18 are distributed at the bottom of each tile of the thrust sliding bearing 17 through blind holes, and the plurality of groups of thermocouples 18 are provided with heat capable of detecting the multi-direction of the thrust sliding bearing 17;
the variable frequency motor 1 is installed in the middle of the spring base 201, the telescopic main shaft 24 is installed at the bottom end of the variable frequency motor 1, the rotating shaft 23 is arranged below the telescopic main shaft 24, the taper shank 22 is installed at the bottom end of the rotating shaft 23, the connection pressure plate 21 is installed at the bottom end of the taper shank 22, the bearing body 3 is arranged between the positioning shaft sleeve 5 and the spring butt joint seat 202, the spring butt joint seat 202 is not affected by the positioning shaft sleeve 5 when rotating, the torque output 8 is installed on one side of the torque sensor 11 and used for transmitting data generated by the torque sensor 11 to the outside, and the pressure output 7 is installed on one side of the pressure sensor 14 and used for transmitting data generated by the pressure sensor 14 to the outside.
Referring to fig. 1, when the variable frequency motor 1 drives the thrust disc 19 to rotate, the thrust sliding bearing 17 does not rotate, but the thrust disc 19 exerts a downward force and a rotating thrust sliding bearing force on the thrust sliding bearing 17.
The working principle of the invention is as follows:
firstly, the test bed is moved to a proper position and is externally connected with a power supply, a variable frequency motor 1 of the test bed provides power, a telescopic main shaft 24 of the motor can axially extend, the extending part is static at two parts of a shaft and a rotating shaft 23, the rotating part is provided with an inner hole which is tapered, a spring base 201 is fixed at a non-rotating part of the main shaft which can extend through four screws, twelve deformation springs 204 can be combined and connected in parallel by selecting different rigidity, and further the elastic reset function of the deformation springs 204 is utilized to ensure that the main shaft extends and retracts inside the spring base 201 by utilizing a spring butt joint seat 202 in the working process, then the main shaft obtains different overall rigidity, and is fixed by a spring holding seat 203 to wind the main shaft of the motor for one circle, so that the main shaft does not interfere with the deformation springs 204 when rotating. The spring butt joint seat 202, the bearing and the positioning shaft sleeve 5 are fixed in a kidney-shaped hole in the motor spindle through two fixing bolts 4, and the bottoms of the fixing bolts 4 can move up and down in the kidney-shaped hole to realize compression of the spring. Before the test is started, the deformation spring 204 needs to be ensured to be in a compressed state, and the fixing bolt 4 is positioned at the bottom of the kidney-shaped hole to provide a certain pretightening force for the system.
Secondly, the connecting pressure plate 21 is fixed inside the positioning shaft sleeve 5 through bolts, the positioning shaft sleeve 5, the fixed plate 20 and the thrust plate 19 are connected through bolts, a cuboid at the tail of the taper shank 22 is placed in a square hole of the connecting pressure plate 21, a spring is arranged between the bottom of the taper shank 22 and the positioning shaft sleeve 5 to ensure that the taper shank 22 is reliably contacted with a taper hole of the main shaft, and the torque of the motor is transmitted to the fixed plate 20 through the taper shank 22 arranged in the taper hole of the main shaft. The thrust sliding bearing 17 is placed on a flat plate vertical to the main shaft, the bottom of the thrust sliding bearing is positioned through three pins, and a water tank 602 is arranged outside the thrust sliding bearing to ensure that the thrust sliding bearing can operate in fluid. The bearing is connected with a pressure sensor 14 through a coupling disc 15 and a transmission shaft 9. The lower part of the pressure sensor 14 is connected with the pressure sensor 14 through the pressure supporting seat 13. The components comprising the bearing, the flat plate, the water tank 602, the pressure sensor 14 and the like can rotate circumferentially under the drive of friction torque, the deep groove ball bearing 16 and the tapered roller bearing 12 provide guidance and axial bearing for the thrust sliding bearing 17, axial load is applied through axial displacement of the main shaft, and axial movement of the main shaft is realized through a gear-rack mechanism. Different weights are tangentially placed on the circumference of the end of the gear to adjust the axial load, the load can be directly measured by the pressure sensor 14, the friction torque between the thrust disc 19 and the thrust sliding bearing 17 is transmitted to the torque sensor 11 through the transmission shaft 9, the connecting disc 15, the pressure sensor 14, the pressure supporting seat 13 and the like, and the dynamic torque is measured by the torque sensor 11. And calculating the values of the pressure sensor 14 and the torque sensor 11 to obtain the friction coefficients of the bearing under different working conditions.
Finally, the water inlet 606 is connected with a circulating flow pump through a pipeline, different fluid flows are simulated under the action of the circulating flow pump, the temperature generated when the thrust disc 19 rotates on the surface of the thrust sliding bearing 17 can be measured through the thermocouple 18, and finally all work of the device is finished.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description has described specific embodiments of the present invention. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (5)
1. The multi-working-condition vibration reduction loading thrust sliding bearing test bed is characterized by comprising a mounting table (10), a working condition transformation structure (6), a torsion sensor (11), a pressure sensor (14) and a thermocouple (18) which are mounted on the mounting table (10), wherein a water tank (602) is arranged inside the working condition transformation structure (6), a water inlet (606) and a water outlet (603) are respectively arranged on two sides of the water tank (602), a thrust sliding bearing (17) is arranged inside the water tank (602), and the water inlet (606) can be communicated with fluids with different flow rates to enter the water tank (602), so that different cooling flow environments are arranged inside the water tank (602),
a thermocouple (18) is arranged in the thrust sliding bearing (17), a transmission shaft (9) is installed at the lower end of the thrust sliding bearing (17), a connecting disc (15) is installed at the bottom end of the transmission shaft (9), a pressure sensor (14) is installed at the bottom end of the connecting disc (15), and the bottom end of the pressure sensor (14) is connected with the torsion sensor (11) through a pressure supporting seat (13);
a shell cover (604) is installed on the water tank (602), the working condition transformation structure (6) comprises a water blocking chamber (601), and a water leakage port (605) is installed at the bottom end of one side of the water blocking chamber (601);
a positioning shaft sleeve (5) is installed at the top end of the outer shell cover (604), a fixed disc (20) is installed at the bottom end of the positioning shaft sleeve (5), a thrust disc (19) is arranged at the bottom end of the fixed disc (20), a fixed bolt (4) is arranged at the top end of the positioning shaft sleeve (5), and a protection structure (2) is installed at the top end of the fixed bolt (4);
the protective structure (2) comprises a spring butt joint seat (202), a deformation spring (204) is arranged inside the spring butt joint seat (202), a spring retaining seat (203) is sleeved on the surface of the deformation spring (204), and a spring base (201) is installed at the top end of the deformation spring (204);
the deformation spring (204) can drive the spring butt joint seat (202) to stretch out and draw back in the spring base (201);
a deep groove ball shaft (16) is arranged between the mounting table (10) and the connecting disc (15), and a rotating structure is formed between the connecting disc (15) and the mounting table (10);
the variable frequency motor (1) is mounted in the middle of the spring base (201), a telescopic main shaft (24) is mounted at the bottom end of the variable frequency motor (1), a rotating shaft (23) is arranged below the telescopic main shaft (24), a taper shank (22) is mounted at the bottom end of the rotating shaft (23), and a connecting pressing plate (21) is mounted at the bottom end of the taper shank (22);
the connecting pressure plate (21) is fixed inside the positioning shaft sleeve (5) through bolts, and the positioning shaft sleeve (5), the fixed disc (20) and the thrust disc (19) are connected through bolts.
2. The multi-operating-condition damping loading thrust sliding bearing test bed according to claim 1, wherein multiple groups of deformation springs (204) are arranged between the spring base (201) and the spring butt-joint seat (202), and the multiple groups of deformation springs (204) are arranged between the spring base (201) and the spring butt-joint seat (202) at equal intervals.
3. The multi-operating-condition vibration damping loading thrust sliding bearing test bed according to claim 1, wherein the spring butt joint seat (202) and the spring base (201) are in a telescopic shape.
4. The multi-operating-condition vibration damping loading thrust sliding bearing test bed according to claim 1, characterized in that the water baffle chamber (601) is wrapped on the surface of the water tank (602).
5. The multi-condition damping-loading thrust sliding bearing test bed according to claim 1, wherein the thermocouples (18) are arranged in multiple groups in the thrust sliding bearing (17), and multiple groups of thermocouples (18) are installed at the bottom of each tile of the thrust sliding bearing (17) through blind holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111572618.1A CN114112395B (en) | 2021-12-21 | 2021-12-21 | Multi-working-condition vibration-damping loading thrust sliding bearing test bed |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111572618.1A CN114112395B (en) | 2021-12-21 | 2021-12-21 | Multi-working-condition vibration-damping loading thrust sliding bearing test bed |
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| CN114112395B true CN114112395B (en) | 2023-03-31 |
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