CN110470468B - Bearing and gear test bench - Google Patents
Bearing and gear test bench Download PDFInfo
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- CN110470468B CN110470468B CN201910628375.5A CN201910628375A CN110470468B CN 110470468 B CN110470468 B CN 110470468B CN 201910628375 A CN201910628375 A CN 201910628375A CN 110470468 B CN110470468 B CN 110470468B
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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
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/021—Gearings
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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
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/025—Test-benches with rotational drive means and loading means; Load or drive simulation
-
- 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
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/028—Acoustic or vibration analysis
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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
- G01M13/045—Acoustic or vibration analysis
Abstract
The invention discloses a bearing and gear test bench, which comprises a transmission speed reducing mechanism, a combined machine base, a spiral loading mechanism, a gear center distance adjusting mechanism and a base platform mechanism, wherein the transmission speed reducing mechanism is arranged on the combined machine base; the transmission speed reducing mechanism is used for transmitting the power output by the motor to a gear ring of the combined base; the combined type engine base is used for mounting a cylindrical thrust roller bearing and a spiral loading mechanism; the spiral loading mechanism is used for clamping and loading the cylindrical thrust roller bearing to be tested; the gear center distance adjusting mechanism is used for adjusting the center distance between the gear ring and a pinion in the transmission speed reducing mechanism; the base platform mechanism is used for supporting and installing the transmission speed reducing mechanism, the combined machine base and the gear center distance adjusting mechanism. The invention is suitable for laboratory simulation tests and test analysis requirements of large-size bearing gear faults, and can be used for tests of diagnosis and positioning of faults of bearings and gears under low-speed heavy-load working conditions.
Description
Technical Field
The invention relates to a bearing and gear test bench, and belongs to the technical field of bearing and gear fault detection in rotary machinery.
Background
With the improvement of performance, the application of the rolling bearing in large-scale rotating machinery is more and more common, the influence on the reliability and the safety of large-scale industrial equipment is gradually enhanced, and the bearing and the gear are important parts of the rotating machinery equipment, so that the real-time monitoring on the bearing and the gear has important significance on the reliability and the safety of the large-scale industrial equipment. The traditional detection method depends on accurate rotating speed information, and large-sized low-speed equipment is often accompanied by relatively large rotating speed fluctuation, so that the monitoring and fault diagnosis of the low-speed heavy-duty bearing are particularly difficult.
At present, the test means is the main means for detecting the bearing and the gear, and Rongjunxiang and the like provide a test stand body for testing the performance of the sliding thrust bearing, so that the problem that the existing sliding bearing monitoring test data is inaccurate is solved; the Xuandongsheng and the like provide a high-frequency vibration test bench for a bearing of an axle box of a railway vehicle, and can truly simulate the conditions of high-speed rotation and high-frequency vibration of the bearing in the movement of the railway vehicle in a laboratory; li political affairs Qing et al propose a cylindrical gear pair meshing impact test bench and test method according to cylindrical gear pair meshing impact mechanism of action, can obtain the measured value of the cylindrical gear pair meshing impact of different profile of tooth to effectual meshing impact introduces the dynamics and carries out gear pair dynamic analysis.
The experimental detection equipment mainly takes the small-sized bearing and the gear as the main parts, the detection of the large-sized bearing and gear equipment is not shown, and if the large-sized rotating equipment provided with the large-sized bearing and gear is tested and data is collected on site, the test and data collection is very difficult, the test and data collection is seriously influenced by natural environment factors, equipment operation factors and human factors, the site test precision cannot be guaranteed, and the test and research work of testers is influenced. Therefore, the development of special equipment for testing the bearing gear with low speed and heavy load under the laboratory condition is very important.
Disclosure of Invention
The invention provides a bearing and gear test bench, which is used for realizing a test of a bearing and a gear under a low-speed heavy-load working condition through the structure.
The technical scheme of the invention is as follows: a bearing and gear test bench comprises a transmission speed reducing mechanism, a combined machine base, a spiral loading mechanism, a gear center distance adjusting mechanism and a base platform mechanism; the transmission speed reducing mechanism is used for transmitting the power output by the motor 7 to a gear ring 14 of the combined machine base; the combined machine base is used for mounting a cylindrical roller thrust bearing 12 and a spiral loading mechanism; the spiral loading mechanism is used for clamping and loading the cylindrical roller thrust bearing 12 to be tested; the gear center distance adjusting mechanism is used for adjusting the center distance between the gear ring 14 and the pinion 1-2 in the transmission speed reducing mechanism; the base platform mechanism is used for supporting and installing the transmission speed reducing mechanism, the combined machine base and the gear center distance adjusting mechanism.
The transmission speed reducing mechanism comprises a pinion base 1, a left side supporting plate 2, a right side supporting plate 3, a small belt pulley 4, a bottom plate 5, a rear baffle 6, a motor 7 and a motor supporting plate 8; wherein one end of a stud bolt 25 is in threaded connection with a threaded hole of a T-shaped nut 24 of the base platform mechanism, the other end of the stud bolt 25 penetrates through a through hole I5-2 on a bottom plate 5 and is fixed by a nut, a pinion bearing seat 1-7 of a pinion base 1 is in threaded connection with a side through hole I2-1 of a left side support plate 2 and a side through hole II 3-1 of a right side support plate 3 through threaded holes I1-6 on two sides and is used for fixing the pinion base 1 between the left side support plate 2 and the right side support plate 3, a small belt wheel 4 is fixed at the shaft end of a motor 7 through a screw and a gasket and is used for transmitting power to the pinion base 1, the left side support plate 2 is fixed on the bottom plate 5 through a bottom threaded hole I2-2 and the right side support plate 3 through a bottom threaded hole II 3, the motor 7 is fixed on the motor supporting plate 8 through a threaded hole III 8-1 of the motor supporting plate 8 by screws, the motor supporting plate 8 is fixed on the left supporting plate 2 and the right supporting plate 3 through a through hole III 8-2 of the motor supporting plate 8 by screws through a top threaded hole I2-3 of the left supporting plate 2 and a top threaded hole II 3-3 of the right supporting plate 3, and the rear baffle 6 is connected and fixed at the tail ends of the left supporting plate 2 and the right supporting plate 3 through a through hole II 6-1 and a screw through a rear threaded hole I2-4 of the left supporting plate 2 and a rear threaded hole II 3-4 of the right supporting plate 3.
The pinion base 1 comprises a pinion mandrel 1-1, a pinion 1-2, a large belt wheel 1-3, a small bearing end cover 1-4, a tapered roller bearing 1-5 and a pinion bearing seat 1-7; the small gear 1-2 and the large belt wheel 1-3 are arranged at the shaft end of the small gear mandrel 1-1, the small gear 1-2 is connected with a gear ring 14 of a combined machine base in a gear meshing mode, the large belt wheel 1-3 is connected with the small belt wheel 4 through a belt, the small gear mandrel 1-1 is fixed in a hole 1-7 of the small gear bearing seat through a tapered roller bearing 1-5, and a small bearing end cover 1-4 is arranged at the upper end of the small gear bearing seat 1-7 through a threaded hole at the upper end of the small gear bearing seat 1-7 and is used for pressing the small gear mandrel 1-1.
The combined machine base comprises a base 9, a threaded loading shaft bearing race 10, a bearing support seat 11, a gear ring support seat 13 and a gear ring 14; wherein one end of a stud bolt 25 is in threaded connection with a threaded hole of a T-shaped nut 24 of a base platform mechanism, the other end of the stud bolt 25 penetrates through a through hole at the bottom of a base 9 and is fixed by a nut, a loading shaft race 10 is installed in the base 9, a bearing support seat 11 is installed on the base 9 by a screw through a threaded hole on the base 9, a thrust cylindrical roller bearing 12 race and an inner hole of the bearing support seat 11 are installed on the bearing support seat 11 in a matched mode, a positioning shaft shoulder part at the lower end of a gear ring support seat 13 is installed on the thrust cylindrical roller bearing 12 in a matched mode with a thrust cylindrical roller bearing 12 race, threaded holes uniformly distributed on a gear ring 14 are fixed on the gear ring support seat 13 by screws, and the gear ring 14 is connected with.
The spiral loading mechanism comprises a loading shaft 15 with threads, a thrust ball bearing 16 for transition, a double-row angular contact ball bearing 17 for positioning, a bearing end cover 18 and a locking nut 19; wherein a threaded loading shaft 15 sequentially passes through inner holes of a thrust ball bearing 16 for transition, a threaded loading shaft bearing race 10, a double-row angular contact ball bearing 17 for positioning, a bearing end cover 18 and a gear ring supporting seat 13 and is fixed by a lock nut 19, the upper end of the thrust ball bearing 16 for transition is matched with a seat hole 10-1 at the bottom of the threaded loading shaft bearing race 10 of the combined type engine base, the lower end of the thrust ball bearing 16 for transition is matched with a bottom end cover of the threaded loading shaft 15 shaft, the double-row angular contact ball bearing 17 is arranged in a middle seat hole 10-2 of the threaded loading shaft bearing race 10 of the combined type engine base and is matched with a journal of the threaded loading shaft 15, the bearing end cover 18 is fixed on the end face of the threaded loading shaft bearing race 10 of the combined type engine base by a screw and a threaded hole IV 10-3 of the end face of the threaded loading shaft bearing, the locking nut 19 is provided with an open slot, and a screw penetrates through the through hole to press the open slot of the locking nut 19 tightly, so that the self-locking of the locking nut 19 is realized.
The shaft head of the loading shaft 15 with the threads is provided with a threaded hole V15-1 for assembling with a hanging ring 15-2, so that the loading shaft is convenient to mount; and a through hole III 15-3 with the thickness of 20mm is formed at a position 50mm away from the end face of the threaded shaft head for tightening the nut.
The locking nut 19 is provided with an open slot 19-1 at a distance of 2-3 teeth from the end surface, the end surface is provided with two fixing through holes 19-2, two pressing threaded holes 19-3 are arranged at positions of the open corresponding to the fixing through holes 19-2, and the open is pressed by a screw when the nut is screwed down, so that the self-locking of the locking nut 19 is realized.
The gear center distance adjusting mechanism comprises a push rod 20 with threads, a thread seat 21 and a fixed seat bottom plate 22; the threaded push rod 20 passes through a threaded hole of the threaded seat 21, the threaded push rod 20 is used for pushing the transmission speed reducing mechanism to move back and forth, a threaded hole is formed in the lower end of the threaded seat 21 and is fixed on the fixing seat bottom plate 22, one end of the stud bolt 25 is in threaded connection with a threaded hole of the T-shaped nut 24 of the base platform mechanism, and the other end of the stud bolt 25 penetrates through a through hole in the fixing seat bottom plate 22 and is fixed through a nut.
The shaft head of the push rod 20 with the threads is separately provided with a cross hole 20-1, and a wrench is inserted into the cross hole 20-1 to rotate the push rod 20 with the threads so as to enable the push rod 20 with the threads to move back and forth.
The base platform mechanism comprises a base platform 23, a T-shaped nut 24 and a stud bolt 25; the T-shaped nuts 24 are placed in the T-shaped grooves 24 of the base platform 23, the intervals are set according to fixed objects, the bottom ends of the stud bolts 25 are installed in threaded holes of the T-shaped grooves 24, the other ends of the stud bolts 25 penetrate through holes I5-2 in the bottom plate 5 in the transmission speed reducing mechanism and fix the bottom plate 5 on the base platform 23 through nuts, the other ends of the stud bolts 25 penetrate through holes in the fixing seat bottom plate 22 in the gear center distance adjusting mechanism and fix the fixing seat bottom plate 22 on the base platform 23 through nuts, and the other ends of the stud bolts 25 penetrate through holes in the bottom of the base 9 in the combined type engine base and fix the base 9 on the base platform 23 through.
The invention has the beneficial effects that:
1. the experimental object of the invention is an 811/500 bearing, the inner diameter of the cylindrical roller thrust bearing is 500mm, the reference circle diameter of the gear ring is 900mm, the running conditions of bearings and gears of large-scale industrial equipment such as a ladle machine, a mechanical arm rotary support and the like can be simulated through experiments, the running vibration parameters and sound emission parameters can be measured and monitored in real time, and the performance of the bearing and the gears can be evaluated and predicted in the whole life.
2. The invention is suitable for laboratory simulation tests and test analysis requirements of large-size bearing gear faults, and can be used for tests of diagnosis and positioning of faults of bearings and gears under low-speed heavy-load working conditions.
3. The base of the test bed supporting bearing is a combined type base, the structure is simple, the operation is convenient, and the manufacturing cost of the whole base is reduced.
4. Compared with a traditional test bed in which a motor directly drives a shaft to drive a gear and a bearing to operate, the test bed adopts the component belt wheel to realize transition among the motor, the bearing and the gear, reduces the interference of the operation of the motor when fault data are collected, and has high test precision.
5. The invention does not need to test and collect data on the large-scale rotating equipment provided with large-scale bearings and gears on site, can be directly carried out under laboratory conditions and can repeatedly carry out the test, so that the test analysis by using the invention is not influenced and limited by time and external environmental factors.
Drawings
FIG. 1 is a schematic view of the overall assembly of the present invention;
FIG. 2 is a schematic view of the overall structure of the present invention;
FIG. 3 is a schematic structural view of a transmission reduction mechanism according to the present invention;
FIG. 4 is a schematic view of a modular housing according to the present invention;
FIG. 5 is a schematic structural view of a spiral loading mechanism of the present invention;
FIG. 6 is a schematic structural view of a gear center distance adjusting mechanism according to the present invention;
FIG. 7 is a schematic structural view of a base platform mechanism according to the present invention;
FIG. 8 is a first schematic view of a pinion base according to the present invention;
FIG. 9 is a second schematic view of the pinion base structure of the present invention;
FIG. 10 is a schematic view of the pinion base assembly of the present invention;
FIG. 11 is a first schematic view of the left and right side supporting plates according to the present invention;
FIG. 12 is a second schematic view of the left and right side supporting plates according to the present invention;
FIG. 13 is a schematic view of a motor support plate according to the present invention;
FIG. 14 is a schematic view of the bottom plate structure of the present invention;
FIG. 15 is a schematic view of a rear fender structure according to the present invention;
FIG. 16 is a schematic view of a threaded loading shaft race configuration;
FIG. 17 is a first schematic view of a threaded loading shaft according to the present invention;
FIG. 18 is a second schematic view of a threaded loading shaft according to the present invention;
FIG. 19 is a first schematic view of a lock nut according to the present invention;
FIG. 20 is a second schematic structural view of a lock nut of the present invention;
FIG. 21 is a schematic view of a threaded push rod mechanism of the present invention;
the reference numbers in the figures: 1-pinion base, 1-1-pinion mandrel, 1-2-pinion, 1-3-big belt wheel, 1-4-small bearing end cover, 1-5-tapered roller bearing, 1-6-threaded hole I, 1-7-pinion bearing seat, 2-left side support plate, 2-1-side through hole I, 2-2-bottom threaded hole I, 2-3-top threaded hole I, 2-4-back threaded hole I, 3-right side support plate, 3-1-side through hole II, 3-2-bottom threaded hole II, 3-3-top threaded hole II, 3-4-back threaded hole II, 4-small belt wheel, 5-bottom plate, etc, 5-1-screw hole II, 5-2-screw hole I, 6-rear baffle, 6-1-screw hole II, 7-motor, 8-motor supporting plate, 8-1-screw hole III, 9-base, 10-screw thread loading shaft bearing race, 10-1-bottom seat hole, 10-2-middle seat hole, 10-3-screw hole IV, 11-bearing supporting seat, 12-thrust cylindrical roller bearing, 13-gear ring supporting seat, 14-gear ring, 15-screw thread loading shaft, 15-1-screw hole V, 15-2-lifting ring, 15-3-screw hole III, 16-transition thrust ball bearing, 17-positioning double-row angular contact ball bearing, 18-bearing end cover, 6-rear baffle, 6-1-screw hole II, 7-motor, 8-motor supporting plate, 9-base, 10-screw thread loading shaft bearing, 19-locking nut, 19-1-open slot, 19-2-fixed through hole, 19-3-pressing threaded hole, 20-push rod, 20-1-cross hole, 21-threaded seat, 22-fixed seat bottom plate, 23-base platform, 24-T type nut and 25-stud bolt.
Detailed Description
Example 1: as shown in fig. 1-21, a bearing and gear testing stand comprises a transmission speed reducing mechanism, a combined machine base, a spiral loading mechanism, a gear center distance adjusting mechanism and a base platform mechanism; the transmission speed reducing mechanism is used for transmitting the power output by the motor 7 to a gear ring 14 of the combined machine base; the combined machine base is used for mounting a cylindrical roller thrust bearing 12 and a spiral loading mechanism; the spiral loading mechanism is used for clamping and loading the cylindrical roller thrust bearing 12 to be tested; the gear center distance adjusting mechanism is used for adjusting the center distance between the gear ring 14 and the pinion 1-2 in the transmission speed reducing mechanism; the base platform mechanism is used for supporting and installing the transmission speed reducing mechanism, the combined machine base and the gear center distance adjusting mechanism.
Further, the transmission speed reducing mechanism can be arranged to comprise a small gear base 1, a left side supporting plate 2, a right side supporting plate 3, a small belt wheel 4, a bottom plate 5, a rear baffle 6, a motor 7 and a motor supporting plate 8; wherein one end of a stud bolt 25 is in threaded connection with a threaded hole of a T-shaped nut 24 of the base platform mechanism, the other end of the stud bolt 25 penetrates through a through hole I5-2 on a bottom plate 5 and is fixed by a nut, a pinion bearing seat 1-7 of a pinion base 1 is in threaded connection with a side through hole I2-1 of a left side support plate 2 and a side through hole II 3-1 of a right side support plate 3 through threaded holes I1-6 on two sides and is used for fixing the pinion base 1 between the left side support plate 2 and the right side support plate 3, a small belt wheel 4 is fixed at the shaft end of a motor 7 through a screw and a gasket and is used for transmitting power to the pinion base 1, the left side support plate 2 is fixed on the bottom plate 5 through a bottom threaded hole I2-2 and the right side support plate 3 through a bottom threaded hole II 3, the motor 7 is fixed on the motor supporting plate 8 through a threaded hole III 8-1 of the motor supporting plate 8 by screws, the motor supporting plate 8 is fixed on the left supporting plate 2 and the right supporting plate 3 through a through hole III 8-2 of the motor supporting plate 8 by screws through a top threaded hole I2-3 of the left supporting plate 2 and a top threaded hole II 3-3 of the right supporting plate 3, and the rear baffle 6 is connected and fixed at the tail ends of the left supporting plate 2 and the right supporting plate 3 through a through hole II 6-1 and a screw through a rear threaded hole I2-4 of the left supporting plate 2 and a rear threaded hole II 3-4 of the right supporting plate 3.
Further, the pinion base 1 can be arranged to comprise a pinion mandrel 1-1, a pinion 1-2, a large belt wheel 1-3, a small bearing end cover 1-4, a tapered roller bearing 1-5 and a pinion bearing seat 1-7; the small gear 1-2 and the large belt wheel 1-3 are arranged at the shaft end of the small gear mandrel 1-1, the small gear 1-2 is connected with a gear ring 14 of a combined machine base in a gear meshing mode, the large belt wheel 1-3 is connected with the small belt wheel 4 through a belt, the small gear mandrel 1-1 is fixed in a hole 1-7 of the small gear bearing seat through a tapered roller bearing 1-5, and a small bearing end cover 1-4 is arranged at the upper end of the small gear bearing seat 1-7 through a threaded hole at the upper end of the small gear bearing seat 1-7 and is used for pressing the small gear mandrel 1-1.
Regarding the transmission speed reduction mechanism: the motor 7 drives the small belt wheel 4 to rotate, power is transmitted to the large belt wheel 1-3, and the speed reduction ratio i is 1:2, so that the first-stage speed reduction is realized; the big belt wheel 1-3 is fixed on the small gear mandrel 1-1, and the big belt wheel 1-3 transmits power to the small gear 1-2 to drive the gear ring 14 to rotate.
Further, the combined machine base can be arranged to comprise a base 9, a threaded loading shaft bearing race 10, a bearing support seat 11, a gear ring support seat 13 and a gear ring 14; wherein one end of a stud bolt 25 is in threaded connection with a threaded hole of a T-shaped nut 24 of a base platform mechanism, the other end of the stud bolt 25 penetrates through a through hole at the bottom of a base 9 and is fixed by a nut, a loading shaft race 10 is installed in the base 9, a bearing support seat 11 is installed on the base 9 by a screw through a threaded hole on the base 9, a thrust cylindrical roller bearing 12 race and an inner hole of the bearing support seat 11 are installed on the bearing support seat 11 in a matched mode, a positioning shaft shoulder part at the lower end of a gear ring support seat 13 is installed on the thrust cylindrical roller bearing 12 in a matched mode with a thrust cylindrical roller bearing 12 race, threaded holes uniformly distributed on a gear ring 14 are fixed on the gear ring support seat 13 by screws, and the gear ring 14 is connected with.
Regarding the combined machine base: the speed reduction ratio i of the gear ring 14 and the pinion 1-2 is 12:1, the pinion 1-2 drives the gear ring 14 to realize second-stage speed reduction, the gear ring 14 drives the gear ring supporting seat 13 to rotate, and further drives the thrust cylindrical roller bearing 12 to rotate, and low-speed operation can be realized according to the speed input by the motor in the process (taking a speed reduction motor (rated rotating speed of 150r/min) for outputting large torque as an example: the rotating speed of the gear ring 14 can be controlled within 10r/min after second-stage speed reduction); acceleration or acoustic emission sensors can be arranged around the bearing support seat 11 to collect vibration signals or acoustic emission signals of the thrust cylindrical roller bearing 12 and the gear ring 14, and to diagnose and position faults of the thrust cylindrical roller bearing 12 and the gear ring 14.
Further, the screw loading mechanism can be provided with a loading shaft 15 with screw threads, a thrust ball bearing 16 for transition, a double-row angular contact ball bearing 17 for positioning, a bearing end cover 18 and a locking nut 19; wherein a threaded loading shaft 15 sequentially passes through inner holes of a thrust ball bearing 16 for transition, a threaded loading shaft bearing race 10, a double-row angular contact ball bearing 17 for positioning, a bearing end cover 18 and a gear ring supporting seat 13 and is fixed by a lock nut 19, the upper end of the thrust ball bearing 16 for transition is matched with a seat hole 10-1 at the bottom of the threaded loading shaft bearing race 10 of the combined type engine base, the lower end of the thrust ball bearing 16 for transition is matched with a bottom end cover of the threaded loading shaft 15 shaft, the double-row angular contact ball bearing 17 is arranged in a middle seat hole 10-2 of the threaded loading shaft bearing race 10 of the combined type engine base and is matched with a journal of the threaded loading shaft 15, the bearing end cover 18 is fixed on the end face of the threaded loading shaft bearing race 10 of the combined type engine base by a screw and a threaded hole IV 10-3 of the end face of the threaded loading shaft bearing, the locking nut 19 is provided with an open slot, and a screw penetrates through the through hole to press the open slot of the locking nut 19 tightly, so that the self-locking of the locking nut 19 is realized.
Regarding the screw loading mechanism: by screwing the locking nut 19, the locking nut 19 and the pretightening force of the threaded loading shaft 15 generate pressure along the axial direction, the diameter of the threaded shaft of the threaded loading shaft 15 is 80mm, and the generated axial pressure can simulate the heavy-load operation working condition of the cylindrical roller thrust bearing 12.
Furthermore, the loading shaft 15 with the threads can be arranged, a threaded hole V15-1 is formed in the shaft head and is used for being assembled with the hanging ring 15-2 (when the loading shaft is used for assembly, a crane buckle and the hanging ring buckle are used together, people do not need to lift the loading shaft, labor is saved), and the loading shaft is convenient to install; and a through hole III 15-3 with the thickness of 20mm is formed at a position 50mm away from the end face of the threaded shaft head for tightening the nut.
Furthermore, the locking nut 19 can be provided with an open slot 19-1 at a distance of 2-3 teeth from the end surface, two fixing through holes 19-2 are formed in the end surface, two pressing threaded holes 19-3 are formed in positions, corresponding to the fixing through holes 19-2, of the opening, and the opening can be pressed by using a screw when the nut is screwed down, so that self-locking of the locking nut 19 is realized.
Further, the gear center distance adjusting mechanism can be arranged to comprise a push rod 20 with threads, a thread seat 21 and a fixed seat bottom plate 22; the threaded push rod 20 passes through a threaded hole of the threaded seat 21, the threaded push rod 20 is used for pushing the transmission speed reducing mechanism to move back and forth, a threaded hole is formed in the lower end of the threaded seat 21 and is fixed on the fixing seat bottom plate 22, one end of the stud bolt 25 is in threaded connection with a threaded hole of the T-shaped nut 24 of the base platform mechanism, and the other end of the stud bolt 25 penetrates through a through hole in the fixing seat bottom plate 22 and is fixed through a nut.
Regarding the gear center distance adjusting mechanism: by rotating the threaded push rod 20, the threaded push rod 20 advances in the axial direction in the threaded seat 21, and when the shaft end of the threaded push rod 20 abuts against the rear baffle 6 of the transmission speed reducing mechanism, the transmission speed reducing mechanism integrally moves in the axial direction of the threaded push rod 20, so that the proper adjustment of the center distance between the pinion 1-2 and the gear ring 14 is realized (in the adjustment process, the other end of the stud 25 penetrates through a through hole on the fixed seat bottom plate 22 to be fixed and is loosened by a nut, and after the adjustment, the stud is tightened again).
Further, a cross hole 20-1 may be separately formed at the shaft head of the threaded push rod 20, and a wrench may be inserted into the cross hole 20-1 to rotate the threaded push rod 20 so as to move the threaded push rod 20 forward and backward.
Further, the base platform mechanism may be provided with a base platform 23, a T-nut 24, and a stud 25; the T-shaped nuts 24 are placed in the T-shaped grooves 24 of the base platform 23, the intervals are set according to fixed objects, the bottom ends of the stud bolts 25 are installed in threaded holes of the T-shaped grooves 24, the other ends of the stud bolts 25 penetrate through holes I5-2 in the bottom plate 5 in the transmission speed reducing mechanism and fix the bottom plate 5 on the base platform 23 through nuts, the other ends of the stud bolts 25 penetrate through holes in the fixing seat bottom plate 22 in the gear center distance adjusting mechanism and fix the fixing seat bottom plate 22 on the base platform 23 through nuts, and the other ends of the stud bolts 25 penetrate through holes in the bottom of the base 9 in the combined type engine base and fix the base 9 on the base platform 23 through.
The working process of the invention is as follows:
1. after the assembly is completed, an operator screws the locking nut 19 to clamp and load the cylindrical roller thrust bearing 12, screws penetrate through the fixing through holes 19-2 to the pressing threaded holes 19-3 at the open slot 19-1, and screws the locking nut to press the open slot 19-1 of the locking nut to realize self-locking and loosening. Properly adjusting the center distance between the pinion 1-2 and the gear ring 14;
2. arranging acceleration or acoustic emission sensors around the bearing support seat 11, adjusting parameters of acquired data through an external computer, starting the motor 7 to adjust the rotating speed, starting to acquire vibration and acoustic emission data of the thrust cylindrical roller bearing 12 and the gear ring 14, and realizing diagnosis and positioning of faults of the thrust cylindrical roller bearing 12 and the gear ring 14 through analyzing the data.
3. Acceleration or acoustic emission sensors are arranged on two sides of the pinion base 1, parameters of acquired data are adjusted through an external computer, a motor is started to adjust the rotating speed, vibration and acoustic emission data of the pinions 1-2 are acquired, and fault diagnosis and positioning of the pinions 1-2 are achieved through data analysis.
While the present invention has been described in detail with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (8)
1. The utility model provides a bearing, gear test bench which characterized in that: the device comprises a transmission speed reducing mechanism, a combined machine base, a spiral loading mechanism, a gear center distance adjusting mechanism and a base platform mechanism;
the transmission speed reducing mechanism is used for transmitting the power output by the motor (7) to a gear ring (14) of the combined type engine base;
the combined type engine base is used for mounting a cylindrical roller thrust bearing (12) and a spiral loading mechanism;
the spiral loading mechanism is used for clamping and loading the cylindrical roller thrust bearing (12) to be tested;
the gear center distance adjusting mechanism is used for adjusting the center distance between a gear ring (14) and a pinion (1-2) in the transmission speed reducing mechanism;
the base platform mechanism is used for supporting and installing the transmission speed reducing mechanism, the combined machine base and the gear center distance adjusting mechanism;
the combined machine base comprises a base (9), a threaded loading shaft bearing race (10), a bearing support seat (11), a gear ring support seat (13) and a gear ring (14); one end of a stud bolt (25) is in threaded connection with a threaded hole of a T-shaped nut (24) of a base platform mechanism, the other end of the stud bolt (25) penetrates through a through hole in the bottom of a base (9) and is fixed by the nut, a threaded loading shaft bearing race (10) is installed in the base (9), a bearing support seat (11) is installed on the base (9) through a threaded hole in the base (9) by a screw, a thrust cylindrical roller bearing (12) race and an inner hole of the bearing support seat (11) are installed on the bearing support seat (11) in a matched mode, a positioning shaft shoulder part at the lower end of a gear ring support seat (13) and a thrust cylindrical roller bearing (12) race are installed on the thrust cylindrical roller bearing (12) in a matched mode, threaded holes uniformly distributed in a gear ring (14) are fixed on the gear ring (13) through screws, and the gear ring (14) is connected with pinions (1-2) of a;
the spiral loading mechanism comprises a loading shaft (15) with threads, a thrust ball bearing (16) for transition, a double-row angular contact ball bearing (17) for positioning, a bearing end cover (18) and a locking nut (19); wherein a loading shaft (15) with threads sequentially passes through inner holes of a thrust ball bearing (16) for transition, a bearing race (10) of the thread loading shaft, a double-row angular contact ball bearing (17) for positioning, a bearing end cover (18) and a gear ring supporting seat (13) and is fixed by a locking nut (19), the upper end of the thrust ball bearing (16) for transition is matched with a base hole (10-1) at the bottom of the bearing race (10) of the thread loading shaft of a combined type machine base, the lower end of the thrust ball bearing (16) for transition is matched with a bottom end cover of the loading shaft (15) with threads, the double-row angular contact ball bearing (17) is arranged in a middle base hole (10-2) of the bearing race (10) of the thread loading shaft of the combined type machine base and is matched with a shaft journal with the loading shaft (15) with threads, and the bearing end cover (18) is fixed on the bearing race (10-3) of the thread loading shaft of the (10) The end face of the locking nut (19) is used for pressing and positioning the double-row angular contact ball bearing (17), the locking nut (19) is provided with an open slot, and a screw penetrates through the through hole to press the open slot of the locking nut (19) so as to realize self-locking of the locking nut (19).
2. The bearing and gear test stand of claim 1, wherein: the transmission speed reducing mechanism comprises a pinion base (1), a left side supporting plate (2), a right side supporting plate (3), a small belt wheel (4), a bottom plate (5), a rear baffle (6), a motor (7) and a motor supporting plate (8); wherein one end of a stud bolt (25) is in threaded connection with a threaded hole of a T-shaped nut (24) of the base platform mechanism, the other end of the stud bolt (25) penetrates through a through hole I (5-2) on a bottom plate (5) and is fixed by the nut, a pinion bearing seat (1-7) of a pinion base (1) is connected with a side through hole I (2-1) of a left support plate (2) and a side through hole II (3-1) of a right support plate (3) by screws through threaded holes I (1-6) on two sides, the pinion base (1) is fixed between the left support plate (2) and the right support plate (3), a pinion wheel (4) is fixed at the shaft end of a motor (7) by screws and a gasket and is used for transmitting power to the pinion base (1), the left support plate (2) is fixed with the bottom threaded hole I (2-2) through a bottom threaded hole I (2) and the right support plate (3) through a bottom end II The screw hole II (5-1) is connected and fixed on the bottom plate (5), the motor (7) is fixed on the motor supporting plate (8) by a screw through the screw hole III (8-1) of the motor supporting plate (8), the motor supporting plate (8) is fixed on the left supporting plate (2) and the right supporting plate (3) by screws through the screw hole I (2-3) at the top end of the left supporting plate (2) and the screw hole II (3-3) at the top end of the right supporting plate (3) by the screw through hole III (8-2) of the motor supporting plate (8), the rear baffle (6) is connected and fixed with the rear threaded holes I (2-4) of the left support plate (2) and the rear threaded holes II (3-4) of the right support plate (3) through the through holes II (6-1) by screws at the tail ends of the left support plate (2) and the right support plate (3).
3. The bearing and gear test stand of claim 2, wherein: the pinion base (1) comprises a pinion mandrel (1-1), a pinion (1-2), a large belt wheel (1-3), a small bearing end cover (1-4), a tapered roller bearing (1-5) and a pinion bearing seat (1-7); the small gear (1-2) and the large belt wheel (1-3) are installed at the shaft end of a small gear mandrel (1-1), the small gear (1-2) is connected with a gear ring (14) of a combined machine base in a gear meshing mode, the large belt wheel (1-3) is connected with the small belt wheel (4) through a belt, the small gear mandrel (1-1) is fixed in a hole of a small gear bearing seat (1-7) through a tapered roller bearing (1-5), and a small bearing end cover (1-4) is installed at the upper end of the small gear bearing seat (1-7) through a threaded hole at the upper end of the small gear bearing seat (1-7) and used for compressing the small gear mandrel (1-1).
4. The bearing and gear test stand of claim 1, wherein: the shaft head of the loading shaft (15) with the thread is provided with a threaded hole V (15-1) for assembling with a lifting ring (15-2), so that the loading shaft is convenient to mount; and a through hole III (15-3) with the thickness of 20mm is formed at a position 50mm away from the end face of the threaded shaft head for screwing the nut.
5. The bearing and gear test stand of claim 1, wherein: the self-locking nut is characterized in that an open slot (19-1) is formed in the position, 2-3 teeth away from the end face, of the locking nut (19), two fixing through holes (19-2) are formed in the end face, two compression threaded holes (19-3) are formed in the positions, corresponding to the fixing through holes (19-2), of the open slot, and the opening is compressed through a screw when the nut is screwed down, so that self-locking of the locking nut (19) is achieved.
6. The bearing and gear test stand of claim 1, wherein: the gear center distance adjusting mechanism comprises a push rod (20) with threads, a thread seat (21) and a fixed seat bottom plate (22); wherein threaded push rod (20) are used for promoting the transmission reduction gears to move back and forth through the threaded hole of screw thread seat (21), threaded push rod (20) are used for promoting the transmission reduction gears to move back and forth, the threaded hole is seted up to screw thread seat (21) lower extreme and is fixed on fixing base bottom plate (22), the threaded hole threaded connection of stud (25) one end and T type nut (24) of base platform mechanism, stud (25) other end passes the through-hole on fixing base bottom plate (22) and fixes with the nut.
7. The bearing and gear test stand of claim 6, wherein: the shaft head of the threaded push rod (20) is separately provided with a cross hole (20-1), and a wrench is inserted into the cross hole (20-1) to rotate the threaded push rod (20) so that the threaded push rod (20) moves back and forth.
8. The bearing and gear test stand of claim 1, wherein: the base platform mechanism comprises a base platform (23), a T-shaped nut (24) and a stud bolt (25); the T-shaped nut (24) is placed in a T-shaped groove of the base platform (23), the interval is set according to a fixed object, the bottom end of the stud (25) is installed in a threaded hole of the T-shaped nut (24), the other end of the stud (25) penetrates through a through hole I (5-2) in the bottom plate (5) in the transmission speed reducing mechanism and fixes the bottom plate (5) on the base platform (23) through a nut, the other end of the stud (25) penetrates through a through hole in the fixing seat bottom plate (22) in the gear center distance adjusting mechanism and fixes the fixing seat bottom plate (22) on the base platform (23) through a nut, and the other end of the stud (25) penetrates through a through hole in the bottom of the base (9) in the combined type machine base and fixes the base (9) on the base platform (23) through a nut.
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| CN106706438A (en) * | 2017-01-09 | 2017-05-24 | 青岛四机设备工程有限公司 | Running attrition testbed compatible with bearing grease uniformizing and non-axle box state idle load of wheel set |
| CN107356394A (en) * | 2017-07-27 | 2017-11-17 | 中车长春轨道客车股份有限公司 | Rail car axle box bearing dither is test bed |
| CN207095813U (en) * | 2017-08-30 | 2018-03-13 | 重庆三峡学院 | A kind of gear vibration detection means |
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