CN109813549B - Large-scale bearing testing machine - Google Patents
Large-scale bearing testing machine Download PDFInfo
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- CN109813549B CN109813549B CN201910234797.4A CN201910234797A CN109813549B CN 109813549 B CN109813549 B CN 109813549B CN 201910234797 A CN201910234797 A CN 201910234797A CN 109813549 B CN109813549 B CN 109813549B
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- 238000012360 testing method Methods 0.000 title claims abstract description 39
- 238000003825 pressing Methods 0.000 claims abstract description 30
- 239000003638 chemical reducing agent Substances 0.000 claims description 22
- 238000005096 rolling process Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000004088 simulation Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Abstract
The invention relates to a large-scale bearing testing machine, which belongs to the field of testing devices of large-scale fan bearing performance, and comprises a bracket, an upper workbench and a lower workbench; a turntable for placing the bearing is arranged on the lower workbench, a driving motor for driving the turntable to rotate is arranged in the lower workbench, a track is arranged below the lower workbench, and wheels are arranged on the lower workbench; the invention has the advantages that when the axial pressing part is ensured to be horizontal, and the actual stress of a bearing can be completely simulated to a certain extent.
Description
Technical Field
The invention relates to the field of testing devices for bearing performance of large fans, in particular to a large bearing testing machine.
Background
The theoretical life, stability, lubricating performance, sealing performance, bearing capacity and other parameters of the large wind power variable slurry bearing or yaw bearing product are important indexes for measuring the comprehensive performance of the large wind power variable slurry bearing or yaw bearing product, and the indexes are required to be obtained by a special testing machine for testing the performance of the fan bearing with the functions of starting friction moment and testing speed change, load change and direction change.
For example, chinese patent with publication number CN101183044B discloses a wind power variable pitch bearing testing machine, which mainly comprises a base, a vertical plate, a left support, a right support, a left pressing shaft, a right pressing shaft, an upper left radial pressing cylinder, an upper right radial pressing cylinder, a front left radial pressing cylinder, a front right radial pressing cylinder, a rear left radial pressing cylinder, a rear right radial pressing cylinder, a lower left radial pressing cylinder, a lower right radial pressing cylinder and an axial pressing cylinder, wherein the vertical plate is mounted at the middle position of the base, the left support and the right support are mounted on the base, and are respectively positioned at the left side and the right side of the vertical plate, the left pressing shaft and the right pressing shaft are respectively connected with an inner ring of the test bearing, and the upper left radial pressing cylinder, the lower left radial pressing cylinder, the front left radial pressing cylinder and the rear left radial pressing cylinder are respectively positioned at the upper side, the lower side, the front side, the rear side and the rear side of the right support, and the axial pressing cylinder is positioned at the right side of the right support. However, the testing machine belongs to a horizontal testing machine, and cannot completely simulate the actual stress condition.
Another example is chinese patent publication No. CN104568439B which discloses a 3.6 m large fan bearing test stand, which includes an axial pressurization portion, a radial pressurization portion, a starting torque cylinder, two guide rails, a base, a foundation, a pulling-in wringer, a pulling-out wringer, a bracket, a bearing seat, a lower flange, and a plurality of hydraulic motor driving devices. The test bed can meet the comprehensive detection requirements of the special bearing of the large wind driven generator on the bearing performance test and the life test, and the bearing is subjected to the simulation test in the axial direction and the radial direction. However, the test bed has a disadvantage that because the two axial force cylinders and the two overturning moment cylinders cannot be driven completely synchronously, the horizontal pressing down of the pressing beam cannot be ensured when the pressing beam is lifted or lowered, so that deviation occurs when the bearing is axially pressed, and the test result of the simulation test is affected.
Disclosure of Invention
The invention aims to provide a large bearing testing machine which has the advantages that the axial downward pressing part is ensured to be horizontal during axial pressing, and the actual stress of a bearing can be completely simulated to a certain extent.
The above object of the present invention is achieved by the following technical solutions:
the large-scale bearing testing machine comprises a bracket, an upper workbench vertically arranged on the bracket in a sliding manner and a lower workbench horizontally arranged on the bracket and positioned right below the upper workbench, wherein the table tops of the upper workbench and the lower workbench are rectangular;
the lower workbench is provided with a turntable for placing a bearing, the turntable is connected with an inner ring of the bearing in the vertical direction through a bolt, a driving motor for driving the turntable to rotate is arranged in the lower workbench, the support is positioned below the lower workbench, a horizontally extending track is arranged below the support, the track extends to the outer side of the support from the right below the support, and wheels in rolling fit with the track are arranged on the lower workbench;
a circular plate for pressing the bearing is arranged on the upper workbench opposite to the turntable, the circular plate is connected with the outer ring of the bearing in the vertical direction through a screw, an axial moment oil cylinder for driving the circular plate to move in the vertical direction is arranged on the upper workbench, a support oil cylinder for driving the upper workbench to move vertically upwards is arranged on the support, a piston rod of the support oil cylinder is hinged with the upper workbench, a radial moment oil cylinder for radially pressing the bearing placed on the turntable is arranged on one side of the lower workbench, and the radial moment oil cylinder is in contact with the side wall of the upper workbench;
four corners on the table top of the upper workbench far away from the lower workbench are respectively provided with two chain wheels, fixing columns are respectively arranged right above every two chain wheels on the support, each fixing column is fixedly provided with a chain, one chain is meshed with the lower end of one chain wheel right below the chain at first, is meshed with the upper end of the other chain wheel located on the same side with the chain wheel right below the chain, and is finally fixed at the position, located right below the fixing columns and close to the ground, on the support, of the other chain wheel located right below the chain, and the two chains located on the same side are in an 'infinity' shape after being wound on the chain wheels.
When the technical scheme is implemented, the whole lower workbench slides out of the support along the track from the right lower part of the support when a simulation test is carried out on the large-sized bearing, then the bearing is placed on the turntable, the inner ring of the bearing is axially connected with the turntable through the bolt, and then the supporting oil cylinder is started, so that the piston rod of the supporting oil cylinder vertically contracts downwards, the upper workbench is driven to vertically move downwards, the supporting oil cylinder is closed after the circular plate is attached to the upper end face of the bearing, and then the circular plate is axially connected with the outer ring of the bearing through the screw. At the moment, the motor is started, so that the motor drives the turntable to rotate, the inner ring of the bearing rotates, the axial moment oil cylinder is started while the bearing rotates, a piston rod of the axial moment oil cylinder stretches, and axial pressure is applied to the outer ring of the bearing through the circular plate; starting the radial moment oil cylinder to enable a piston rod of the radial moment oil cylinder to extend, applying radial force to the upper workbench, and transmitting the applied radial force to the bearing through the screw because a circular plate on the upper workbench is connected with the outer ring of the bearing through the screw, so that the bearing receives the radial force; after the test is finished, the bolts and the screws are taken down, the supporting oil cylinder is started, the piston rod of the supporting oil cylinder is lengthened, the upper workbench is further pushed to move vertically upwards, in the moving process of the upper workbench, the chain is meshed with the chain wheels, the two ends of the chain are fixed, the chain wheels can rotate along with the upward movement of the workbench, the two edges on the upper workbench are limited by the chain which is in an '-infinity' shape, the chain is meshed with the chain wheels to form a tooth when the chain is meshed with the chain wheels, so that the four corners are stably lifted under the condition that the chain is meshed with the chain wheels, the upper workbench can always keep horizontal when measuring each bearing, and the upper workbench which is axially pressed downwards is ensured to keep horizontal and can completely simulate the actual stress of the bearing to a certain extent.
Further, two sprockets at the same corner on the upper workbench are provided with outer spherical ball bearings with vertical seats for connecting the two sprockets, the vertical seats with the outer spherical ball bearings with vertical seats are fixedly connected with the upper workbench, and the two sprockets are respectively and fixedly arranged at two ends of the bearings with the outer spherical ball bearings with vertical seats.
By implementing the technical scheme, the arrangement of the spherical ball bearing outside the vertical seat enables the two chain wheels at one corner of the upper workbench to rotate under the condition of being fixed on the upper workbench.
Further, the support is vertically provided with a pillar on the outer side of four corners of the upper workbench, a chute is arranged on the pillar along the length direction of the pillar, and rolling rollers are arranged on the four corners of the upper workbench and in the chute.
By means of the technical scheme, when the upper workbench moves in the vertical direction, the rollers at the four corners move in the sliding grooves on the supporting columns, so that the position of the upper workbench is limited by the four supporting columns, the upper workbench can stably move in the vertical direction, and the upper workbench can be kept horizontal when moving in the vertical direction through the cooperation of the chain and the chain wheels.
Further, the upper workbench is opposite to the lower workbench and is provided with a guide post extending vertically downwards at the outer side of the circular plate, the lower workbench is provided with a guide slot for the guide post to be inserted into, the circle center of the circular plate is provided with a centering post extending vertically downwards, and the end part of the centering post is abutted to the center of the table top of the lower workbench.
By means of the technical scheme, the upper workbench can be matched with the lower workbench through the guide posts and the guide grooves, the bearing is not prone to horizontal shaking between the upper workbench and the lower workbench in the simulation test process, and therefore the testing environment is more attached to the actual working condition.
Further, the inside cavity setting of lower workstation, be provided with planetary reducer in the lower workstation, planetary reducer's output axle head passes the last table wall of lower workstation and is connected through the center of axle sleeve and carousel lower terminal surface, driving motor is frequency conversion three-phase asynchronous motor and sets up on lower workstation's interior diapire, driving motor's one end output shaft with planetary reducer connects and drives planetary reducer rotates.
By implementing the technical scheme, the internal gear of the planetary reducer adopts 20CrMnTi carburizing quenching and gear grinding, and has the characteristics of small volume, light weight, high bearing capacity, long service life, stable operation, low noise, large output torque, large speed ratio, high efficiency and safe performance. Has the characteristics of power split and single multi-tooth meshing. The novel speed reducer has wide universality, and can reduce the rotating speed, increase the torque and reduce the rotation inertia ratio of a load or a motor. Therefore, when the motor drives the turntable to rotate, the rotating speed can be effectively reduced through the planetary reducer, and further the dangerous situation of out-of-control caused by overlarge rotating speed is avoided to a certain extent; and the rotating speed in the simulation environment can be adjusted according to the actual working condition of the bearing, so that the application range of the testing machine is wider.
Further, a gear motor is arranged on one side of the driving motor in the lower workbench, the gear motor is coaxially connected with an output shaft of the other end of the driving motor, and a coupling for enabling the driving motor and the gear motor to keep coaxial rotation is arranged at the joint of the driving motor and the gear motor.
By means of the technical scheme, the driving motor is a variable frequency three-phase asynchronous motor, so that the variable frequency three-phase asynchronous motor is double-shaft, if the rotating speed is too high, the variable frequency three-phase asynchronous motor can be directly turned off, the gear motor is started, power is transmitted to the output shaft of the variable frequency three-phase asynchronous motor through low-speed rotation of the gear motor, the planetary reducer rotates, the turntable is driven to rotate, the rotating speed adjusting range of the turntable is wider, the shaft coupling is arranged, the variable frequency three-phase asynchronous motor and the output shaft of the gear motor can be kept coaxial, and meanwhile, the transmission operation process is stable.
Further, foundation bolts are arranged at the end, close to the ground, of the support column, and the support column is fixed on the ground through the foundation bolts.
By implementing the technical scheme, the support column and the support frame can be stably fixed through the foundation bolts.
In summary, the invention has the following beneficial effects:
1. two edges on the upper workbench are limited by a chain in an 'infinity' shape, and a tooth slot is meshed with a tooth when the chain is meshed with a chain wheel, so that four corners are enabled to stably rise horizontally under the condition that the chain is meshed with the chain wheel, the upper workbench can always keep horizontal when each bearing is measured, and the upper workbench has the advantages of ensuring that the upper workbench pressed downwards axially keeps horizontal when the bearing is pressurized axially and completely simulating actual stress of the bearing to a certain extent;
2. because driving motor is frequency conversion three-phase asynchronous motor, therefore have biax, if under the too big circumstances of rotational speed, can be directly close frequency conversion three-phase asynchronous motor, start gear motor, the output shaft of frequency conversion three-phase asynchronous motor is given with power through gear motor's low-speed rotation for planetary reducer rotates, and then drives the carousel and rotate, thereby reach the accommodation range that lets carousel rotational speed wider, and the setting up of shaft coupling makes both output shafts of frequency conversion three-phase asynchronous motor and gear motor can keep coaxial, let the transmission operation process more stable simultaneously.
Drawings
FIG. 1 is a front view of a large bearing tester according to an embodiment of the present invention;
fig. 2 is an enlarged view of a portion a in fig. 1;
FIG. 3 is a side view of a large bearing tester according to an embodiment of the present invention;
FIG. 4 is a front view of a lower table of an embodiment of the present invention;
FIG. 5 is a top view of a lower table of an embodiment of the present invention;
FIG. 6 is a front view of an upper table of an embodiment of the present invention;
FIG. 7 is a side view of an upper table of an embodiment of the present invention;
fig. 8 is a top view of an upper table of an embodiment of the present invention.
Reference numerals: 1. a bracket; 11. a track; 12. a support cylinder; 13. fixing the column; 131. a chain; 14. a support post; 2. an upper working table; 21. a circular plate; 211. a centering column; 22. a screw; 23. an axial moment oil cylinder; 24. radial moment oil cylinder; 25. a sprocket; 26. a roller; 27. a guide post; 3. a lower working table; 31. a turntable; 311. a bolt; 32. a driving motor; 33. a wheel; 4. spherical ball bearing with vertical seat; 5. a planetary reducer; 6. a speed reducing motor; 7. a coupling; 8. foundation bolts.
Detailed Description
The technical scheme of the embodiment of the invention will be described below with reference to the accompanying drawings.
As shown in fig. 1 and 6, a large-scale bearing testing machine comprises a bracket 1, an upper workbench 2 vertically arranged on the bracket 1 in a sliding manner, and a lower workbench 3 horizontally arranged on the bracket 1 and positioned right below the upper workbench 2, wherein the table top shapes of the upper workbench 2 and the lower workbench 3 are rectangular, a strut 14 is vertically arranged on the outer side of the bracket 1, which is positioned at four corners of the upper workbench 2, one corner corresponds to one strut 14, a chute is arranged on the strut 14 along the length direction of the strut 14, and rollers 26 rolling in the chute are arranged at the four corners of the upper workbench 2; referring to fig. 3 and 4, the end of the strut 14 close to the ground is provided with an anchor bolt 8, and the strut 14 is fixed on the ground through the anchor bolt 8; the support 1 is provided with track 11 in the below of lower workstation 3, and track 11 horizontal extension sets up subaerial, and track 11 extends to the support 1 outside from the support 1 directly under, is provided with the wheel 33 with track 11 rolling fit on the lower workstation 3.
As shown in fig. 1 and 2, a turntable 31 (see fig. 5) for placing a bearing is arranged on a table surface of the lower workbench 3, which is opposite to the upper workbench 2, and the turntable 31 is connected with an inner ring of the bearing in the vertical direction through a bolt 311; in this embodiment, a circle of threaded holes is circumferentially arranged on the turntable 31 around the center of the turntable 31, and corresponds to a circle of threaded holes on the bearing inner ring, and bolts 311 are inserted into each two corresponding threaded holes in a threaded manner; referring to fig. 4, a driving motor 32 for driving the turntable 31 to rotate is provided in the lower table 3; the inside of the lower workbench 3 is hollow, a planetary reducer 5 is arranged in the lower workbench 3, the output shaft end of the planetary reducer 5 passes through the upper surface wall of the lower workbench 3 and is connected with the center of the lower end surface of the turntable 31 through a shaft sleeve, a driving motor 32 is a variable-frequency three-phase asynchronous motor and is arranged on the inner bottom wall of the lower workbench 3, and one end output shaft of the driving motor 32 is connected with the planetary reducer 5 and drives the planetary reducer 5 to rotate; in the embodiment, the output shaft of the driving motor 32 is perpendicular to the output shaft of the planetary reducer 5, a rotational speed torque meter is arranged on the output shaft of the driving motor 32, the output shaft of the driving motor 32 extends to the inside of the planetary reducer 5, and the bevel gear at the end part of the output shaft of the driving motor 32 is meshed with the bevel gear in the planetary reducer 5 to change the rotation direction and simultaneously drive, so that the planetary reducer 5 can normally drive the turntable 31 to move; a gear motor 6 is arranged on one side of the driving motor 32 in the lower workbench 3, the gear motor 6 is coaxially connected with the output shaft of the other end of the driving motor 32, and a coupler 7 for keeping the driving motor 32 and the gear motor 6 coaxially rotated is arranged at the joint of the driving motor 32 and the gear motor 6.
As shown in fig. 1 and 2, a circular plate 21 (see fig. 7) for pressing the bearing is arranged on the upper workbench 2 opposite to the turntable 31, the circular plate 21 is connected with the outer ring of the bearing in the vertical direction through a screw 22, and similarly, a circle of threaded holes are formed on the surface of the circular plate 21 around the circle center of the circular plate 21 and correspond to a circle of threaded holes on the outer ring of the bearing, and at the moment, the screw 22 is threaded in each two threaded holes; the upper workbench 2 is provided with axial moment cylinders 23, the axial moment cylinders 23 are used for driving the circular plate 21 to move in the vertical direction, the upper workbench 2 is rectangular, and in combination with fig. 3, two opposite sides of the upper workbench 2 are provided with the axial moment cylinders 23, each side is provided with four axial moment cylinders 23, and the four axial moment cylinders 23 are arranged side by side and run synchronously; each strut 14 is provided with a support cylinder 12, namely four support cylinders 12, the support cylinders 12 are used for driving the upper workbench 2 to vertically move upwards, a piston rod of each support cylinder 12 is hinged with the upper workbench 2, a radial moment cylinder 24 is arranged on one side of the lower workbench 3, which is positioned on the turntable 31, and the radial moment cylinders 24 are used for radially pressing bearings placed on the turntable 31, and the radial moment cylinders 24 are in contact with the side wall of the upper workbench 2; in the present embodiment, the radial torque cylinders 24 are arranged in three and run in synchronization.
As shown in fig. 1 and 3, two chain wheels 25 are arranged at four corners on a table surface of the upper workbench 2 far away from the lower workbench 3, namely, two chain wheels 25 are arranged at each corner, eight chain wheels 25 are arranged on the lower workbench 3 in total, a vertical seat-carrying outer spherical ball bearing 4 (see fig. 8) for connecting the two chain wheels 25 at the same corner on the upper workbench 2 is arranged between the two chain wheels 25, the vertical seat-carrying outer spherical ball bearing 4 is fixedly connected with the upper workbench 2, and the two chain wheels 25 are respectively fixedly arranged at two ends of the bearing-carrying outer spherical ball bearing 4; the fixing columns 13 are arranged on the bracket 1 and located right above each two chain wheels 25, each chain wheel 25 corresponds to one fixing column 13, namely eight fixing columns 13 are also arranged on the bracket 1, each fixing column 13 is fixedly provided with a chain 131, one chain 131 is meshed with the lower end of one chain wheel 25 located right below the chain 131, the other chain wheel 25 located right below the chain 131 is meshed with the upper end of the other chain wheel 25 located on the same side, and finally the chain 131 is fixed on the bracket 1 and located right below the fixing columns 13 and close to the ground.
As shown in fig. 4 and 7, the upper workbench 2 is opposite to the lower workbench 3, a guide post 27 extending vertically is arranged outside the circular plate 21, a guide slot for the guide post 27 to be inserted is formed in the lower workbench 3, a centering post 211 extending vertically and downwards is arranged at the center of the circular plate 21, and the end part of the centering post 211 is abutted against the center of the table top of the lower workbench 3; the guide post 27 and the guide groove are arranged to enable the upper workbench 2 to be matched with the lower workbench 3, so that the bearing is not easy to shake horizontally between the upper workbench 2 and the lower workbench 3 in the process of performing the simulation test, and the testing environment is enabled to be more fit with the actual working condition.
The specific working process comprises the following steps: when a simulation test is carried out on a large-sized bearing, firstly, the whole lower workbench 3 slides out of the support 1 along the track 11 from the right lower part of the support 1, then the bearing is placed on the turntable 31, the inner ring of the bearing is axially connected with the turntable 31 through the bolts 311, then the supporting oil cylinder 12 is started, so that a piston rod of the supporting oil cylinder 12 vertically contracts downwards, the upper workbench 2 is driven to vertically move downwards, the supporting oil cylinder 12 is closed after the circular plate 21 is attached to the upper end face of the bearing, and then the circular plate 21 is axially connected with the outer ring of the bearing through the bolts 22. At this time, the motor is started, so that the motor drives the turntable 31 to rotate, the inner ring of the bearing rotates, and the axial moment oil cylinder 23 is started while the bearing rotates, so that a piston rod of the axial moment oil cylinder 23 stretches, and axial pressure is applied to the outer ring of the bearing through the circular plate 21; starting the radial moment oil cylinder 24 to enable a piston rod of the radial moment oil cylinder 24 to extend, applying radial force to the upper workbench 2, and transmitting the applied radial force to the bearing through the screw 22 because the circular plate 21 on the upper workbench 2 is connected with the outer ring of the bearing through the screw 22, so that the bearing receives the radial force; after the test is finished, the bolts 311 and the screws 22 are removed, the supporting oil cylinders 12 are started, the piston rods of the supporting oil cylinders 12 extend, the upper workbench 2 is pushed to move vertically upwards, in the moving process of the upper workbench 2, the chain 131 is meshed with the chain wheel 25, and two ends of the chain 131 are fixed, so that the chain wheel 25 can rotate along with the upward movement of the workbench, two edges on the upper workbench 2 are limited by the chain 131 in an 'infinity' shape, and the chain 131 is meshed with the chain wheel 25, and tooth grooves are meshed with one tooth, so that four corners are enabled to stably rise horizontally under the condition that the chain 131 is meshed with the chain wheel 25, the upper workbench 2 can always keep horizontal when each bearing is measured, and the advantages that the upper workbench 2 pressed downwards axially is guaranteed to keep horizontal and the actual bearing stress can be completely simulated to a certain extent are achieved when the upper workbench is pressurized axially are achieved.
Claims (7)
1. The large-scale bearing testing machine is characterized by comprising a bracket (1), an upper workbench (2) vertically arranged on the bracket (1) in a sliding manner and a lower workbench (3) horizontally arranged on the bracket (1) and positioned right below the upper workbench (2), wherein the table tops of the upper workbench (2) and the lower workbench (3) are rectangular;
the automatic bearing positioning device is characterized in that a turntable (31) for bearing placement is arranged on the lower workbench (3), the turntable (31) is connected with the inner ring of the bearing in the vertical direction through bolts (311), a driving motor (32) for driving the turntable (31) to rotate is arranged in the lower workbench (3), a horizontally extending rail (11) is arranged below the lower workbench (3) of the support (1), the rail (11) extends to the outer side of the support (1) from the right lower portion of the support (1), and wheels (33) in rolling fit with the rail (11) are arranged on the lower workbench (3);
a circular plate (21) for pressing a bearing is arranged on the upper workbench (2) opposite to the rotary table (31), the circular plate (21) is connected with the outer ring of the bearing in the vertical direction through a screw (22), an axial moment oil cylinder (23) for driving the circular plate (21) to move in the vertical direction is arranged on the upper workbench (2), a support oil cylinder (12) for driving the upper workbench (2) to move vertically upwards is arranged on the support (1), a piston rod of the support oil cylinder (12) is hinged with the upper workbench (2), a radial moment oil cylinder (24) for radially pressing the bearing placed on the rotary table (31) is arranged on one side of the rotary table (31) on the lower workbench (3), and the radial moment oil cylinder (24) is in contact with the side wall of the upper workbench (2);
four corners on the table top of the lower workbench (3) are far away from the upper workbench (2) and are provided with two chain wheels (25), fixing columns (13) are arranged right above every two chain wheels (25) on the support (1), chains (131) are fixedly arranged on the fixing columns (13), one chain (131) is meshed with the lower end of one chain wheel (25) right below the chain (131) at first, meshed with the upper end of the other chain wheel (25) located on the same side with the chain wheel (25) located right below the chain (131), and finally fixed at the position, located right below the fixing columns (13) and close to the ground, of the support (1), and the two chains (131) located on the same side are in an 'infinity' shape after being wound on the chain wheels (25).
2. The large bearing testing machine of claim 1, wherein: the two sprockets (25) at the same corner on the upper workbench (2) are provided with outer spherical ball bearings (4) with vertical seats for connecting the two sprockets, the vertical seats with the outer spherical ball bearings (4) are fixedly connected with the upper workbench (2), and the two sprockets (25) are respectively and fixedly arranged at two ends of the bearings with the outer spherical ball bearings (4).
3. The large bearing testing machine of claim 1, wherein: the support is characterized in that a support (14) is vertically arranged on the outer side of the four corners of the upper workbench (2) on the support (1), a chute is formed in the support (14) along the length direction of the support (14), and rolling rollers (26) in the chute are arranged at the four corners of the upper workbench (2).
4. The large bearing testing machine of claim 1, wherein: the upper workbench (2) is opposite to the lower workbench (3) and is positioned outside the circular plate (21) and provided with a guide post (27) which extends vertically, the lower workbench (3) is provided with a guide slot for the guide post (27) to be inserted into, the circle center of the circular plate (21) is provided with a centering column (211) which extends vertically downwards, and the end part of the centering column (211) is abutted to the center of the table top of the lower workbench (3).
5. The large bearing testing machine of claim 4, wherein: the automatic rotary table is characterized in that the lower workbench (3) is arranged in a hollow mode, a planetary reducer (5) is arranged in the lower workbench (3), the output shaft end of the planetary reducer (5) penetrates through the upper surface wall of the lower workbench (3) and is connected with the center of the lower end face of the rotary table (31) through a shaft sleeve, the driving motor (32) is a variable-frequency three-phase asynchronous motor and is arranged on the inner bottom wall of the lower workbench (3), and one end output shaft of the driving motor (32) is connected with the planetary reducer (5) and drives the planetary reducer (5) to rotate.
6. The large scale bearing testing machine of claim 5, wherein: the automatic feeding device is characterized in that a gear motor (6) is arranged on one side of the driving motor (32) in the lower workbench (3), the gear motor (6) is coaxially connected with an output shaft at the other end of the driving motor (32), and a coupler (7) for enabling the driving motor (32) and the gear motor (6) to keep coaxial rotation is arranged at the joint of the driving motor (32) and the gear motor (6).
7. A large scale bearing testing machine according to claim 3, wherein: the support column (14) is provided with an anchor bolt (8) close to the ground, and the support column (14) is fixed on the ground through the anchor bolt (8).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910234797.4A CN109813549B (en) | 2019-03-26 | 2019-03-26 | Large-scale bearing testing machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910234797.4A CN109813549B (en) | 2019-03-26 | 2019-03-26 | Large-scale bearing testing machine |
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| CN109813549A CN109813549A (en) | 2019-05-28 |
| CN109813549B true CN109813549B (en) | 2023-12-19 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104374572A (en) * | 2014-10-16 | 2015-02-25 | 杭州轴承试验研究中心有限公司 | Large-scale forklift portal idler wheel bearing unit service life test system and method |
| CN104568439A (en) * | 2014-12-30 | 2015-04-29 | 瓦房店轴承集团有限责任公司 | Test table for bearing of 3.6-meter large-sized wind generator |
| CN105571861A (en) * | 2014-10-12 | 2016-05-11 | 王江林 | Bearing testing device |
| CN109375147A (en) * | 2018-10-19 | 2019-02-22 | 国网山东省电力公司烟台供电公司 | A kind of test macro of Application of Power Metering Instruments |
| CN209589475U (en) * | 2019-03-26 | 2019-11-05 | 成都天马精密机械有限公司 | A kind of large bearing testing machine |
-
2019
- 2019-03-26 CN CN201910234797.4A patent/CN109813549B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105571861A (en) * | 2014-10-12 | 2016-05-11 | 王江林 | Bearing testing device |
| CN104374572A (en) * | 2014-10-16 | 2015-02-25 | 杭州轴承试验研究中心有限公司 | Large-scale forklift portal idler wheel bearing unit service life test system and method |
| CN104568439A (en) * | 2014-12-30 | 2015-04-29 | 瓦房店轴承集团有限责任公司 | Test table for bearing of 3.6-meter large-sized wind generator |
| CN109375147A (en) * | 2018-10-19 | 2019-02-22 | 国网山东省电力公司烟台供电公司 | A kind of test macro of Application of Power Metering Instruments |
| CN209589475U (en) * | 2019-03-26 | 2019-11-05 | 成都天马精密机械有限公司 | A kind of large bearing testing machine |
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