CN114001957B - Vertical bearing testing machine - Google Patents
Vertical bearing testing machine Download PDFInfo
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- CN114001957B CN114001957B CN202111297834.XA CN202111297834A CN114001957B CN 114001957 B CN114001957 B CN 114001957B CN 202111297834 A CN202111297834 A CN 202111297834A CN 114001957 B CN114001957 B CN 114001957B
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- 238000012360 testing method Methods 0.000 title claims abstract description 74
- 230000005284 excitation Effects 0.000 claims abstract description 55
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 36
- 239000010959 steel Substances 0.000 claims abstract description 36
- 239000010687 lubricating oil Substances 0.000 claims abstract description 17
- 230000003068 static effect Effects 0.000 claims abstract description 7
- 239000006096 absorbing agent Substances 0.000 claims abstract description 4
- 230000035939 shock Effects 0.000 claims abstract description 4
- 238000002955 isolation Methods 0.000 claims description 18
- 239000003921 oil Substances 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 16
- 238000005303 weighing Methods 0.000 claims description 10
- 230000001133 acceleration Effects 0.000 claims description 9
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 238000010168 coupling process Methods 0.000 description 7
- 238000005859 coupling reaction Methods 0.000 description 7
- 230000007246 mechanism Effects 0.000 description 7
- 230000000712 assembly Effects 0.000 description 6
- 238000000429 assembly Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 6
- 230000008878 coupling Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Classifications
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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
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- 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
- G01M13/045—Acoustic or vibration analysis
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a vertical bearing testing machine which comprises a driving unit, a lower rotor bearing assembly, an upper rotor bearing assembly, a driving base, a supporting base, a steel bar, a bearing support, an excitation unit, a loading unit, a shock absorber and a sensor unit, wherein the driving unit is connected with the lower rotor bearing assembly; the rigidity of the test bearing support is controlled by adjusting the number of the connecting steel bars, the pressure of a lubricating oil film of the test bearing is regulated and controlled by adjusting the flow of lubricating oil, the pressure value is detected in real time, various working conditions of the test bearing are simulated by adjusting the exciting force of the exciting unit and the static thrust of the loading unit, the characteristic parameters of the bearing under the multiple working conditions are detected by the test machine, and the test bearings with different types and sizes are detected by the test machine by replacing part or all parts of the upper rotor bearing assembly.
Description
Technical Field
The invention relates to the field of machinery, in particular to a bearing testing machine.
Background
The existing bearing test machine is various in types, as disclosed in Chinese patent application number 202120328250.3, and comprises a base and an upper cover, and further comprises a test shaft, wherein supports are respectively formed at two ends of the lower box, outer lining assemblies are respectively arranged on the supports, the two outer lining assemblies are symmetrically arranged, lining assemblies are respectively embedded in the outer lining assemblies, the two inner lining assemblies are symmetrically arranged, test bearings are respectively arranged at two ends of the test shaft, the two test bearings are in one-to-one rotary connection in the two inner lining assemblies, one end of the test shaft is in transmission connection with an electric spindle, an axial loading device is arranged in the direction of the other end of the test shaft, and a radial loading device is arranged at the position between the two test bearings. When the bearings with different specifications and smaller outer diameter difference are tested, only the inner lining component is needed to be replaced without replacing the outer lining component, so that the same outer lining component can be used for testing a plurality of bearings with different specifications, the utilization rate is relatively high, and the cost is relatively low. In addition, as disclosed in chinese patent application No. 202110055669.0, a dual-station hub bearing unit working condition simulation testing machine includes a main shaft transmission unit, including a motor, a transmission belt and a belt wheel having a transmission connection relationship, where the belt wheel is used to drive the main shaft to rotate, the transmission direction of the transmission belt is orthogonal to the axis of the main shaft, and the belt wheel is fixedly sleeved at the center of the main shaft; the hub bearing test unit comprises a test shaft, a hub bearing and a hub, wherein the left side and the right side of the main shaft are respectively and fixedly connected with the two hub bearing test units; the loading unit comprises a loading arm, an axial hydraulic loading mechanism and a radial hydraulic loading mechanism, wherein the loading arm is in a seat shape and comprises a back plate, a seat plate, a vertical plate and a base plate which are sequentially and continuously connected, one end of the axial hydraulic loading mechanism is longitudinally and adjustably arranged on a side plate of the loading seat, the other end of the axial hydraulic loading mechanism is longitudinally and adjustably arranged on the vertical plate of the loading arm, one end of the radial hydraulic loading mechanism is fixed on the loading seat, and the other end of the radial hydraulic loading mechanism is fixed on the base plate of the loading arm; the loading arm is characterized in that a shaft hole is formed in the backboard of the loading arm, one end of the test shaft is fixed to the shaft hole, a hub bearing is assembled on the periphery of the other end of the test shaft, and a hub driven by a main shaft is arranged on the outer ring of the hub bearing. Similar patents are numerous, but the problems of rigidity change influence of the test bearing supporting device are not considered in all the test machines, and a method for regulating and controlling the lubricating oil film pressure of the test bearing is not considered.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a vertical bearing testing machine which comprises a driving unit, a lower rotor bearing assembly, an upper rotor bearing assembly, a driving base, a supporting base, a steel bar, a bearing support, an excitation unit, a loading unit, a shock absorber and a sensor unit;
a supporting base is fixed on the driving base; the supporting base is supported with a bearing support through a steel rod;
the driving unit is positioned at the lower part of the testing machine and is fixedly arranged in the driving base through bolt connection; the lower rotor bearing assembly is arranged in the supporting base, and the long shaft of the lower rotor bearing assembly is connected with the commutator output shaft of the driving unit; the upper rotor bearing assembly is arranged in the bearing support, and the short shaft and the long shaft of the upper rotor bearing assembly are connected; the test bearing is horizontally arranged at the upper end of the short shaft, the outer diameter of the test bearing and the inner diameter of the outer isolation sleeve are in a dimensional interference fit relationship, the outer diameter of the outer isolation sleeve and the inner hole corresponding to the bearing support are in a dimensional clearance fit relationship, a layer of lubricating oil film is formed at the clearance fit position, a groove is formed in the surface of the inner hole of the bearing support corresponding to the central position of the length direction of the outer isolation sleeve, grooves for sealing elements are respectively formed in the surfaces of the inner holes of the bearing support corresponding to the two ends of the length direction of the outer isolation sleeve, the grooves for sealing elements are symmetrically distributed on two sides of the grooves, and sealing elements are arranged in the grooves for sealing elements; the groove is used for storing lubricating oil, and the oil film pressure at the clearance fit position is adjusted by changing the stock of the lubricating oil so as to realize the regulation and control of the oil film pressure of the bearing of the testing machine;
the bearing support is fixedly arranged above the steel rod, and the lower part of the steel rod is fixed on the supporting base; the steel bars comprise a plurality of supporting steel bars and a plurality of connecting steel bars, and the supporting steel bars are used for supporting the bearing support; the ends of the connecting steel bars are respectively arranged and fixed on the supporting base and the bearing support, and the rigidity of the bearing support is controlled by adjusting the number of the connecting steel bars;
the vibration excitation unit comprises vibration exciters, vibration excitation rods, vibration excitation blocks and vibration excitation supports, wherein the vibration excitation action center lines of the vibration excitation units and the center lines of the test bearings in the height direction are positioned on the same horizontal plane, the number of the vibration excitation units is 2, the vibration excitation units are installed towards a short shaft and are mutually arranged at a central angle of 90 degrees, the output ends of the vibration exciters are connected with one ends of the vibration excitation rods, the other ends of the vibration excitation rods are connected with the vibration excitation blocks, the vibration excitation blocks are contacted with side end surfaces of the bearing supports, and vibration excitation force output by the vibration exciters acts on the bearing supports through the side end surfaces so as to realize the working condition environment of simulating the shaft to bear the vibration excitation force;
the loading unit comprises a hydraulic cylinder, a connecting flange, a weighing sensor, a pin shaft and a loading support, wherein the center line of a piston of the hydraulic cylinder and the center line of the height direction of the test bearing are positioned on the same horizontal plane, the hydraulic cylinder is installed towards the short shaft and is arranged at an included angle of 45 degrees with the center angles of the two excitation units, the piston at the output end of the hydraulic cylinder is connected with one end of the connecting flange, the other end of the connecting flange is connected with the weighing sensor through a bolt, the other end of the weighing sensor is connected with the pin shaft, the pin shaft is in clearance fit with the pin shaft hole radially arranged on the bearing support, and the static thrust of the piston of the hydraulic cylinder is applied to the bearing support through the pin shaft so as to simulate the working condition environment of static loading of the bearing;
the sensor unit comprises an acceleration sensor, a temperature sensor, a pressure sensor and a displacement sensor, wherein the acceleration sensor is connected to the bearing support through a screw pair and used for detecting the acceleration value of the bearing support, the temperature sensor is connected to the bearing support through a screw pair, the temperature sensor is close to the bearing and used for detecting the temperature value of the bearing, the pressure sensor is connected to the bearing support through a screw pair, the position of the pressure sensor is required to be arranged on the same horizontal plane as the groove and used for detecting the oil film pressure value, and the displacement sensor is fixed near the long shaft through a support and used for detecting the radial vibration of the long shaft.
The upper rotor bearing assembly comprises a short shaft, an inner isolation sleeve, a test bearing, an outer isolation sleeve, a sealing piece, a first end cover, a second end cover and a bolt, wherein the upper rotor bearing assembly is positioned above the lower rotor bearing assembly, is supported and installed in a bearing support through the test bearing, is in a horizontal installation state, and is fixedly connected with the long shaft through a shaft end conical surface, a key and the bolt.
The lower rotor bearing assembly comprises a long shaft, a first distance sleeve, a second distance sleeve, a bearing, a penetrating cover, a locking nut and an oil collecting box, wherein the lower rotor bearing assembly is arranged above the driving unit and is arranged in the supporting base in a supporting manner through the bearing, the bearing is in a horizontal installation state, the supporting base is fixedly arranged above the driving base through bolt connection, the shaft extension end of the long shaft is connected with the output shaft end of the commutator through a shaft coupling, and the oil collecting box is fixedly arranged below the supporting base through bolt connection and is used for collecting bearing lubricating oil.
The vibration exciter is fixedly connected and installed on the vibration excitation support through bolts, and the vibration excitation support is fixedly connected and installed on the driving base through bolts.
The hydraulic cylinder is fixedly connected and installed on the loading support through bolts, and the loading support is fixedly connected and installed on the driving base through bolts.
The invention has the advantages that: the method effectively solves the difficult problem that the prior test technology cannot simulate various working conditions of the test bearing, realizes the adjustment and detection of the oil film pressure, creatively proposes a method for changing the rigidity of the bearing support of the test bearing, realizes the comprehensive detection of the characteristic parameters of the bearing by the test machine, and is applicable to common bearings of various types and sizes.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a top view of the testing machine;
FIG. 3 is a cross-sectional view taken at the A-A position of FIG. 2;
FIG. 4 is a sectional view of the B-B position of FIG. 2;
FIG. 5 is a cross-sectional view of the C-C position of FIG. 1;
FIG. 6 is an enlarged view of a portion of FIG. 3 at A;
part number in the figure: 1-drive unit, 101-motor, 102-commutator, 103-coupling, 2-lower rotor bearing assembly, 201-long shaft, 202-spacer sleeve one, 203-spacer sleeve two, 204-bearing, 205-permeable cover, 206-lock nut, 207-oil collecting box, 3-upper rotor bearing assembly, 301-short shaft, 302-inner spacer sleeve, 303-test bearing, 304-outer spacer sleeve, 305-seal, 306-end cap one, 307-end cap two, 308-bolt, 4-drive base, 5-support base, 6-steel bar, 601-support steel bar, 602-coupling steel bar, the device comprises a 7-bearing support, a 710-groove, a 720-sealing element groove, a 730-side end face, a 740-pin hole, an 8-cover plate, a 9-excitation unit, a 910-excitation center line, a 901-vibration exciter, a 902-excitation rod, a 903-excitation block, a 904-excitation support, a 10-loading unit, a 1001-hydraulic cylinder, a 1002-connecting flange, a 1003-weighing sensor, a 1004-pin, a 1005-loading support, an 11-vibration damper, a 12-sensor unit, a 1201-acceleration sensor, a 1202-temperature sensor, a 1203-pressure sensor and a 1204-displacement sensor.
The specific embodiment is as follows:
the invention is described in further detail below with reference to the attached drawing figures: the utility model provides a vertical bearing testing machine, includes drive unit 1, lower part rotor bearing assembly 2, upper portion rotor bearing assembly 3, drive base 4, support base 5, bar 6, bearing support 7, apron 8, excitation unit 9, loading unit 10, shock absorber 11, sensor unit 12, drive unit 1 includes motor 101, commutator 102, shaft coupling 103, and drive unit 1 is located the lower part of testing machine, installs the inside of fixing at drive base 4 through the bolted connection, provides power to upper portion mechanism.
The lower rotor bearing assembly 2 comprises a long shaft 201, a first distance sleeve 202, a second distance sleeve 203, a bearing 204, a transparent cover 205, a lock nut 206 and an oil collecting box 207, wherein the lower rotor bearing assembly 2 is arranged above the driving unit 1, is supported and installed in the supporting base 5 through the bearing 204, and is in a horizontal installation state, the supporting base 5 is fixedly arranged above the driving base 4 through bolt connection, the shaft extension end of the long shaft 201 is connected with the output shaft end of the commutator 102 through the coupling 103, and the oil collecting box 207 is fixedly arranged below the supporting base 5 through bolt connection and is used for collecting bearing lubricating oil.
The upper rotor bearing assembly 3 comprises a short shaft 301, an inner isolation sleeve 302, a test bearing 303, an outer isolation sleeve 304, a sealing element 305, an end cover I306, an end cover II 307 and a bolt 308, the upper rotor bearing assembly 3 is positioned above the lower rotor bearing assembly 2, the upper rotor bearing assembly 3 is supported and installed inside a bearing support 7 through the test bearing 303, the test bearing 303 is in a horizontal installation state, the short shaft 301 and the long shaft 201 are fixedly connected together through shaft end conical surfaces, keys and the bolt 308, the outer diameter of the test bearing 303 and the inner diameter of the outer isolation sleeve 304 are in a size interference fit relationship, the inner hole corresponding to the outer diameter of the outer isolation sleeve 304 and the bearing support 7 is in a size clearance fit relationship, a layer of lubricating oil film is formed at the clearance fit position, a groove 710 is formed on the inner hole surface of the bearing support 7 corresponding to the center position in the length direction of the outer isolation sleeve 304, the groove 710 is used for storing lubricating oil, and the oil film pressure at the clearance fit position is adjusted through changing the stock of the lubricating oil so as to realize regulation of the bearing pressure of the test bearing; the inner hole surfaces of the bearing support 7 corresponding to the two ends of the outer isolation sleeve 304 in the length direction are respectively provided with a groove 720 for sealing elements, the grooves 720 for sealing elements are symmetrically distributed on two sides of the groove 710, and the grooves 720 for sealing elements are used for installing the sealing elements 305 and enhancing the oil film pressure;
the bearing support 7 is fixedly arranged above the steel bar 6 through bolt connection, and the lower part of the steel bar 6 is fixedly arranged on the support base 5 through bolt connection.
The steel bar 6 comprises a plurality of supporting steel bars 601 and a plurality of connecting steel bars 602, the supporting steel bars 601 are used for supporting the bearing support 7, in the embodiment, 4 supporting steel bars 601 are arranged, the ends of the connecting steel bars 602 are respectively arranged and fixed on the supporting base 5 and the bearing support 7 in a size fit and screw connection mode, the rigidity of the bearing support 7 is controlled by adjusting the number of the connecting steel bars 602, and in the embodiment, 12 connecting steel bars 602 are arranged.
The vibration excitation unit 9 comprises a vibration exciter 901, a vibration excitation rod 902, a vibration excitation block 903 and a vibration excitation support 904, wherein the vibration excitation action center line 910 of the vibration excitation unit 9 and the center line of the test bearing 303 in the height direction are positioned on the same horizontal plane, the number of the vibration excitation units 9 is 2, the vibration excitation units are installed towards the short shaft 301 and are mutually arranged at a central angle of 90 degrees, the output end of the vibration exciter 901 is connected with one end of the vibration excitation rod 902 through a screw pair, the other end of the vibration excitation rod 902 is connected with the vibration excitation block 903 through a screw pair, the vibration excitation block 903 is contacted with the side end face 730 of the bearing support 7, the vibration excitation force output by the vibration exciter 901 acts on the bearing support 7 through the side end face 730 so as to realize the working condition environment of simulating the vibration excitation force of the shaft, the vibration exciter 901 is fixedly connected to the vibration excitation support 904 through bolts, and the vibration excitation support 904 is fixedly connected to the driving base 4 through the bolts.
The loading unit 10 comprises a hydraulic cylinder 1001, a connecting flange 1002, a weighing sensor 1003, a pin shaft 1004 and a loading support 1005, wherein the center line of a piston of the hydraulic cylinder 1001 and the center line of a height direction of a test bearing 303 are positioned on the same horizontal plane, the hydraulic cylinder 1001 is installed towards the short shaft 301 and is arranged at an included angle of 45 degrees with the centers of two excitation units 9, an output end piston of the hydraulic cylinder 1001 is connected with one end of the connecting flange 1002 through a screw pair, the other end of the connecting flange 1002 is connected with the weighing sensor 1003 through a screw pair, the other end of the weighing sensor 1003 is connected with the pin shaft 1004 through a screw pair, the pin shaft 1004 is in dimensional clearance fit with a pin shaft hole 740 radially arranged on the bearing support 7, so that the static thrust of the piston of the hydraulic cylinder 1001 is applied to the bearing support 7 through the pin shaft 1004, the hydraulic cylinder 1001 is installed and fixed on the loading support 1005 through the screw coupling, and the loading support 1005 is installed and fixed on the driving base 4 through the screw coupling.
The bottom of the driving base 4 is uniformly provided with a plurality of vibration dampers 11, the vibration dampers 11 are fixedly arranged below the driving base 4 through bolt connection, and in the embodiment, 4 vibration dampers 11 are arranged.
The sensor unit 12 comprises an acceleration sensor 1201, a temperature sensor 1202, a pressure sensor 1203 and a displacement sensor 1204, wherein the acceleration sensor 1201 is connected to the bearing support 7 through a screw pair and is used for detecting the acceleration value of the bearing support 7, the temperature sensor 1202 is connected to the bearing support 7 through a screw pair, the position is close to a bearing and is used for detecting the temperature value of the bearing, the pressure sensor 1203 is connected to the bearing support 7 through a screw pair, the position is necessarily arranged on the same horizontal plane with the groove 710 and is used for detecting the oil film pressure value, and the displacement sensor 1204 is fixed near the long shaft 201 through a bracket and is used for detecting the radial vibration of the long shaft. The vertical bearing testing machine is characterized in that the test bearing 303 is arranged on a vertical shaft in a horizontal state, the rigidity of the test bearing support 7 is controlled by adjusting the number of the connecting steel bars 602, the pressure of a test bearing lubricating oil film is regulated and controlled by adjusting the flow of lubricating oil, the pressure value is detected in real time, the multiple working conditions of the test bearing 303 are simulated by adjusting the exciting force of the exciting unit 9 and the static thrust of the loading unit 10, the characteristic parameters of the bearing under the multiple working conditions are detected by the testing machine, and the test bearings with different types and sizes are detected by the testing machine by replacing part or all parts of the upper rotor bearing assembly 3.
Claims (5)
1. The utility model provides a vertical bearing test machine which characterized in that: the device comprises a driving unit (1), a lower rotor bearing assembly (2), an upper rotor bearing assembly (3), a driving base (4), a supporting base (5), a steel bar (6), a bearing support (7), an excitation unit (9), a loading unit (10), a shock absorber (11) and a sensor unit (12);
a supporting base (5) is fixed on the driving base (4); a bearing support (7) is supported on the support base (5) through a steel rod (6);
the driving unit (1) is positioned at the lower part of the testing machine and is fixedly connected in the driving base (4) through bolts; the lower rotor bearing assembly (2) is arranged in the supporting base (5), and the long shaft (201) of the lower rotor bearing assembly (2) is connected with the output shaft of the commutator of the driving unit; the upper rotor bearing assembly (3) is arranged in the bearing support (7), and a short shaft (301) of the upper rotor bearing assembly (3) is connected with a long shaft (201); the test bearing (303) is horizontally arranged at the upper end of the short shaft (301), the outer diameter of the test bearing (303) and the inner diameter of the outer isolation sleeve (304) are in a dimensional interference fit relationship, the outer diameter of the outer isolation sleeve (304) and the inner hole corresponding to the bearing support (7) are in a dimensional clearance fit relationship, a layer of lubricating oil film is formed at the clearance fit position, a groove (710) is formed on the inner hole surface of the bearing support (7) corresponding to the central position of the length direction of the outer isolation sleeve (304), a groove (720) for sealing elements is formed on the inner hole surface of the bearing support (7) corresponding to the two ends of the length direction of the outer isolation sleeve (304), the grooves (720) for the sealing elements are symmetrically distributed on two sides of the groove (710), and the sealing elements (305) are arranged in the grooves (720) for the sealing elements; the groove (710) is used for storing lubricating oil, and oil film pressure at the clearance fit position is adjusted by changing the stock of the lubricating oil so as to realize oil film pressure detection of the test machine bearing;
the bearing support (7) is arranged and fixed above the steel rod (6), and the lower part of the steel rod (6) is fixed on the supporting base (5); the steel bars (6) comprise a plurality of supporting steel bars (601) and a plurality of connecting steel bars (602), wherein the supporting steel bars (601) are used for supporting bearing supports (7); the ends of the connecting steel bars (602) are respectively arranged and fixed on the supporting base (5) and the bearing support (7), and the rigidity of the bearing support (7) is controlled by adjusting the number of the connecting steel bars (602);
the vibration excitation unit (9) comprises vibration exciters (901), vibration excitation rods (902), vibration excitation blocks (903) and vibration excitation supports (904), wherein a vibration excitation center line (910) of the vibration excitation unit (9) and a center line in the height direction of a test bearing (303) are positioned on the same horizontal plane, the number of the vibration excitation units (9) is 2, the vibration excitation units are installed towards a short shaft (301) and are arranged at a central angle of 90 degrees, the output ends of the vibration exciters (901) are connected with one ends of the vibration excitation rods (902), the other ends of the vibration excitation rods (902) are connected with the vibration excitation blocks (903), the vibration excitation blocks (903) are in contact with side end faces (730) of the bearing supports (7), and vibration excitation forces output by the vibration exciters (901) act on the bearing supports (7) through the side end faces (730) so as to realize a working condition environment of simulating the shaft to bear vibration excitation forces;
the loading unit (10) comprises a hydraulic cylinder (1001), a connecting flange (1002), a weighing sensor (1003), a pin shaft (1004) and a loading support (1005), wherein the center line of a piston of the hydraulic cylinder (1001) and the center line of the height direction of a test bearing (303) are positioned on the same horizontal plane, the hydraulic cylinder (1001) is installed towards a short shaft (301) and is arranged at an included angle of 45 degrees with the center angles of two excitation units (9), the piston at the output end of the hydraulic cylinder (1001) is connected with one end of the connecting flange (1002), the other end of the connecting flange (1002) is connected with the weighing sensor (1003) through a bolt, the other end of the weighing sensor (1003) is connected with the pin shaft (1004), the pin shaft (1004) and the pin shaft hole (740) radially arranged between the pin shaft (1004) and the bearing support (7) are in a clearance fit relationship, and the piston static thrust of the hydraulic cylinder (1001) acts on the bearing support (7) through the pin shaft (1004) to realize the working condition environment simulating static loading of the bearing;
the sensor unit (12) comprises an acceleration sensor (1201), a temperature sensor (1202), a pressure sensor (1203) and a displacement sensor (1204), wherein the acceleration sensor (1201) is connected to the bearing support (7) through a screw pair and is used for detecting the acceleration value of the bearing support (7), the temperature sensor (1202) is connected to the bearing support (7) through a screw pair, the temperature sensor is positioned close to a bearing and is used for detecting the temperature value of the bearing, the pressure sensor (1203) is connected to the bearing support (7) through a screw pair, the position of the pressure sensor is required to be arranged on the same horizontal plane as the groove (710) and is used for detecting the oil film pressure value, and the displacement sensor (1204) is fixed near the long shaft (201) through a bracket and is used for detecting the radial vibration of the long shaft.
2. The vertical bearing testing machine according to claim 1, wherein: the upper rotor bearing assembly (3) comprises a short shaft (301), an inner isolation sleeve (302), a test bearing (303), an outer isolation sleeve (304), a sealing piece (305), an end cover I (306), an end cover II (307) and a bolt (308), the upper rotor bearing assembly (3) is positioned above the lower rotor bearing assembly (2), the upper rotor bearing assembly is supported and installed in the bearing support (7) through the test bearing (303), the test bearing (303) is in a horizontal installation state, and the short shaft (301) and the long shaft (201) are fixedly connected together through shaft end conical surfaces, keys and the bolt (308).
3. The vertical bearing testing machine according to claim 1, wherein: the lower rotor bearing assembly (2) comprises a long shaft (201), a first distance sleeve (202), a second distance sleeve (203), a bearing (204), a penetrating cover (205), a locking nut (206) and an oil collecting box (207), wherein the lower rotor bearing assembly (2) is arranged above the driving unit (1), the lower rotor bearing assembly is supported and installed in the supporting base (5) through the bearing (204), the bearing (204) is in a horizontal installation state, the supporting base (5) is fixedly arranged above the driving base (4) through bolt connection, the shaft extension end of the long shaft (201) is connected with the output shaft end of the commutator (102) through a coupler (103), and the oil collecting box (207) is fixedly installed below the supporting base (5) through bolt connection and is used for collecting bearing lubricating oil.
4. The vertical bearing testing machine according to claim 1, wherein: the vibration exciter (901) is fixedly connected to the vibration excitation support (904) through bolts, and the vibration excitation support (904) is fixedly connected to the driving base (4) through bolts.
5. The vertical bearing testing machine according to claim 1, wherein: the hydraulic cylinder (1001) is fixedly arranged on the loading support (1005) through bolt connection, and the loading support (1005) is fixedly arranged on the driving base (4) through bolt connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111297834.XA CN114001957B (en) | 2021-11-04 | 2021-11-04 | Vertical bearing testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111297834.XA CN114001957B (en) | 2021-11-04 | 2021-11-04 | Vertical bearing testing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114001957A CN114001957A (en) | 2022-02-01 |
| CN114001957B true CN114001957B (en) | 2024-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111297834.XA Active CN114001957B (en) | 2021-11-04 | 2021-11-04 | Vertical bearing testing machine |
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| CN (1) | CN114001957B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114858452B (en) * | 2022-07-05 | 2022-09-09 | 陇东学院 | Bearing lubrication characteristic test device |
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| JP2012008085A (en) * | 2010-06-28 | 2012-01-12 | Hitachi-Ge Nuclear Energy Ltd | Earthquake resistance testing facility and method thereof |
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| CN112763216A (en) * | 2021-01-15 | 2021-05-07 | 浙江省机电产品质量检测所有限公司 | Ship bearing working condition environment simulation testing machine |
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| CN108519235A (en) * | 2018-03-17 | 2018-09-11 | 北京化工大学 | Air impeller drive-type birotor testing stand |
| CN112763216A (en) * | 2021-01-15 | 2021-05-07 | 浙江省机电产品质量检测所有限公司 | Ship bearing working condition environment simulation testing machine |
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