Generator bearing vibration test bench

Abstract

The present invention discloses a generator bearing vibration test bench, including a test bench, a fixing part for fixing an external bearing to be tested is arranged on the test bench, a bracket is arranged on one side of the test bench, a main board is arranged on the bracket, a driving motor is arranged on the main board, a driving part for driving the external bearing to be tested to operate and applying tension to the bearing to be tested when the driving motor is running is matched between the driving motor and the fixing part, an exciting part for applying an exciting force to the bearing to be tested is arranged on the test bench, and a first adjusting part for adjusting the relative height between the driving motor and the test bench and a second adjusting part for adjusting the direction of the output end of the driving motor so that the exciting force applied by the exciting part is axially loaded or radially loaded on the bearing to be tested are arranged on the bracket. The present invention solves the problem in the prior art that there is a lack of a generator bearing vibration test equipment that simulates the actual operating conditions of the generator bearing and performs tension tests and multi-directional vibration tests on the bearing.

Description

Technical Field

[0001] The invention relates to the technical field of generator bearing test equipment, in particular to a generator bearing vibration test bench. Background Art

[0002] With the rapid development of my country's heavy industry, the manufacturing industry has developed from large to strong, and from strong to high-precision and intelligent, and the requirements for key components such as bearings are becoming higher and higher. As an industrial testing machine, it can simulate the real use environment to make the data obtained more reliable. Among them, generator bearings are used in various vibration environments, such as excitation from their own main shaft, engine vibration, vibration caused by changes in car driving conditions, etc., and with the iterative design of related technologies, various failure investigations, and theoretical research, the vibration environment has become a necessary parameter for the test. Therefore, it is necessary to test the engine bearings to ensure that the engine bearings can meet the working conditions of high vibration frequency, large vibration load, and multi-directional vibration. The bearing vibration test equipment in the prior art lacks the functions of simulating the actual operating conditions of the generator bearings, performing tension tests and vibration tests on the bearings at the same time, and loading the exciting force in multiple directions, that is, it lacks the test of the bearings on the drive motor in the generator. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present invention provides a generator bearing vibration test bench to solve the problem that the prior art lacks a generator bearing vibration test equipment that simulates the actual operating conditions of the generator bearing and performs tension tests and multi-directional vibration tests on the bearing.

[0004] To achieve the above-mentioned purpose, the present invention provides a generator bearing vibration test bench, including a test bench, the test bench is provided with a fixing part for fixing an external bearing to be tested, a bracket is provided on one side of the test bench, a main board is provided on the bracket, a driving motor is provided on the main board, the driving motor and the fixing part are linked to each other to have a driving part for driving the external bearing to be tested to operate and applying tension to the bearing to be tested when the driving motor is running, the test bench is provided with an exciting part for applying an exciting force to the bearing to be tested, the bracket is provided with a first adjusting part for adjusting the relative height between the driving motor and the test bench, and a second adjusting part for adjusting the direction of the output end of the driving motor so that the exciting force applied by the exciting part is axially loaded or radially loaded on the bearing to be tested.

[0005] The advantages of adopting the above technical scheme are as follows: when testing the bearing to be tested, the drive motor is started first, the drive motor starts and drives the bearing to be tested to rotate through the drive member and applies tension to the bearing to be tested, and then the operator applies an exciting force to the bearing to be tested by starting the vibration member to simulate the actual operating conditions of the bearing and the exciting force conditions during actual operation, thereby improving the test range and test accuracy; the operator can adjust the relative height between the drive motor and the test bench and the direction of the exciting force applied by the vibration member according to the actual test requirements or the actual operating condition parameters of the bearing, that is, adjust the relative height between the drive motor and the test bench through the first adjustment member to meet the experimental requirements, and adjust the exciting force loading direction described in the exciting force through the second adjustment member to achieve axial loading or radial loading of the exciting force on the bearing to be tested, thereby meeting different experimental requirements, that is, the test range is improved by adjusting the inconsistency between the vibration loading direction and the tension loading direction; through the setting of the above technology, the bearing is tested in multiple directions under the premise of simulating the actual operating conditions of the bearing, thereby improving the test range and test accuracy.

[0006] The present invention further provides: the fixing part includes a first clamp which can be detachably arranged on the test bench, the first clamp is composed of a fixing plate and an insert shaft arranged at the center of the fixing plate, a driven pulley is sleeved on the insert shaft, and a first step groove is circumferentially opened on the inner circumferential wall of the bottom of the driven pulley shaft hole for partially accommodating an external bearing to be tested and cooperating with the outer ring of the bearing to be tested, a second step groove is circumferentially opened on the outer circumferential wall of the insert shaft for partially accommodating an external bearing to be tested and cooperating with the inner ring of the bearing to be tested, the first step groove and the second step groove are combined to form a rolling cavity for accommodating and moving an external bearing to be tested, the insert shaft is arranged perpendicular to the end face of the test bench, the fixing part also includes a second clamp which can be detachably arranged on the test bench, the second clamp is composed of two oppositely arranged bases, and an installation groove for installing an external motor to be tested is formed between the two bases.

[0007] The benefits of adopting the above technical solution are: before the operator tests the bearing to be tested, the operator inserts the bearing to be tested on the plug-in shaft, and then inserts the driven pulley to fix the bearing to be tested in the rolling cavity. At this time, the inner ring of the bearing is fixedly matched with the plug-in shaft, and the outer ring is rotated relative to the inner ring. At this time, the bearing to be tested is fixed on the test bench and its axial direction is perpendicular to the end face of the test bench; the above technology uses the setting of the first fixture to ensure that the bearing to be tested can be fixed on the test bench for testing, which is convenient for the operator to disassemble and assemble the bearing to be tested, thereby improving the test efficiency; the setting of the second fixture in the above technology is used to fix the external motor to be tested on the test bench when there is a need to test the external motor to be tested, and then install the bearing to be tested on the output end of the motor to be tested, so as to simulate the actual operating conditions of the bearing installed on the external motor, thereby increasing the test range.

[0008] The present invention further provides that: a driving pulley is provided at the output end of the driving motor, and the driving member includes a transmission belt for connecting the driving pulley with the driven pulley or connecting the driving pulley with the output end of the external motor to be tested.

[0009] The advantages of adopting the above technical scheme are as follows: in the above technology, when the driving motor is running, its output end will drive the driving pulley to run, because there is a transmission belt between the driving pulley and the driven pulley, so that when the driving pulley runs, it will drive the transmission belt to drive, thereby realizing the rotation of the driven pulley, and then realizing the operation of the bearing to be tested, thereby simulating the actual operating condition of the bearing; in the above technology, when testing the external motor to be tested, the transmission belt can be adjusted so that the transmission belt is connected to the output end of the external motor to be tested, thereby realizing the belt transmission connection between the driving pulley and the output end of the external motor to be tested, and then driving the operation of the output end of the external motor to be tested when the driving pulley runs; through the setting of the above technology, the actual operating condition of the external motor to be tested and the actual operating condition of the bearing to be tested installed on the external motor to be tested are simulated, thereby improving the subsequent test accuracy and test efficiency.

[0010] The present invention is further configured as follows: a loading cylinder is arranged at the bottom of the main board, a motor base is connected to the bottom of the driving motor, a positioning seat is arranged on the motor base toward the main board, a through groove for the positioning seat to pass through is penetrated on the main board, a swing groove is formed on the positioning seat, a linkage shaft is movably arranged in the swing groove, a loading pin for fixing the linkage shaft and the positioning seat is connected between the linkage shaft and the positioning seat, and the linkage shaft is arranged in linkage with the output end of the loading cylinder.

[0011] The benefits of adopting the above technical solution are: by starting the loading cylinder to realize the movement of the linkage shaft, and then when the linkage shaft moves, the positioning seat is driven to move along the direction of the output end of the loading cylinder, thereby driving the movement of the motor base on the main board, and then realizing the movement of the drive motor, so as to adapt to different test requirements, that is, before testing the bearings to be tested of different sizes or different positions, by adjusting the position of the drive motor to ensure that the driven pulley and the driving pulley can be connected by the transmission belt to achieve belt transmission, and at the same time, by adjusting the position of the drive motor to achieve the magnitude of the pulling force applied by the drive motor to the driven pulley through the transmission belt, the pulling force on the bearing to be tested is adjusted, thereby improving the test range and test accuracy to meet different test requirements.

[0012] The present invention further provides that: a force sensor is connected between the linkage shaft and the output end of the loading cylinder.

[0013] The benefits of adopting the above technical solution are: in the above technology, a force sensor is set to detect the size of the applied tension, so as to meet the test requirements and test visualization, thereby improving the test accuracy and facilitating the adjustment of the test process according to different tension sizes; the force sensor in the above technology is an existing technology, so its structure and function will not be described in detail.

[0014] The present invention is further provided with: two adjusting rods arranged opposite to each other are provided on the bracket along the height direction of the test bench, and sliders are provided on the two adjusting rods for sliding along the height direction of the test bench, a plurality of first openings are penetrated on the adjusting rods along the opening direction of the adjusting rods, a plurality of second openings are provided on the bottom wall of the slider, each of the second openings is detachably connected to the first openings aligned with the respective ones by a first connecting bolt, a plurality of third openings are penetrated on the top wall of the slider along the opening direction of the adjusting rods, the first adjusting member includes two connecting plates, the two connecting plates are disposed on both sides of the main board, the two connecting plates are respectively disposed corresponding to the two sliders one by one, a plurality of fourth openings are penetrated on the connecting plates, and each of the fourth openings is detachably connected to a second connecting bolt for threaded connection with the third openings aligned with the respective ones when the connecting plates are attached to the slider.

[0015] The benefits of adopting the above technical solution are: the slider is fixed on the adjusting rod by screwing in the first connecting bolt, and the slider can be moved before screwing in the first connecting bolt to change the position of the slider on the adjusting rod, and the connecting plate and the slider are fixed by screwing in the second connecting bolt, and then the main board is driven to rise and fall when the position of the slider on the adjusting rod changes, thereby realizing the adjustment of the relative height between the drive motor and the test bench, so as to adapt to different test requirements.

[0016] The present invention is further provided with: a rotating structure is provided at the positions of the two connecting plates corresponding to the bottom wall of the main board, the rotating structure is composed of two relatively arranged rotating seats and a rotating shaft is rotatably connected between the two rotating seats, the two connecting plates have wing plates extending toward the main board direction, and the two wing plates correspond to the two rotating shafts one by one and are connected.

[0017] The advantages of adopting the above technical solution are: in the above technology, the connecting plate is set on the connecting plate through the swing of the wing plate, and when the exciting force applied by the exciting member to the test bench is radially loaded on the bearing to be tested, the main board and the test bench are relatively vertically arranged, that is, one of the connecting plates is connected to one of the sliders, and the other connecting plate is not connected to the slider, so that when the output end of the driving motor rotates, the driving pulley and the driven pulley are in the same horizontal plane, thereby satisfying the radial loading of the exciting force on the bearing to be tested; when the external motor to be tested and the bearing to be tested on its output end are tested to simulate the actual installation of the bearing on the external motor to be tested During operation, the operator swings the main board so that the main board is relatively parallel to the test bench, and then swings the two wing plates so that the two connecting plates are respectively attached to the two sliders and connected through the second connecting bolts, so as to fix the main board between the two adjusting rods. At this time, the axis of the active pulley is parallel to the axis of the output end of the external motor to be tested, so that the active pulley can be connected to the bearing to be tested on the output end of the external motor to be tested through the transmission belt, so as to meet the axial loading of the exciting force on the bearing to be tested; the above-mentioned technical settings can meet different test requirements, thereby improving the test range and test accuracy.

[0018] The present invention further provides that: a support plate is provided on the bracket, the support plate is composed of a horizontal plate and a vertical plate vertically connected, the vertical plate is detachably provided on the bracket, and a plurality of fifth openings for threaded connection of the second connecting bolts are provided on the horizontal plate.

[0019] The benefits of adopting the above technical solution are: the setting of the support plate in the above technology is used to connect one of the connecting plates and one of the sliders through the second connecting bolt before the exciting force is radially loaded on the bearing to be tested, and then connect the other connecting plate to the cross plate through the second connecting bolt, so as to achieve the positioning of the main board. The connection of the two connecting plates can avoid the problem of uneven force on the main board causing the slider to be overloaded and shake or loosen or even detach from the adjusting rod, thereby improving the installation stiffness and accuracy.

[0020] The present invention further provides that: the vibration exciting member includes a vibration generator, and the vibration end of the vibration generator is arranged in cooperation with the test bench.

[0021] The advantages of adopting the above technical solution are as follows: the vibration generator in the above technology is a device for applying an exciting force to the test bench, which is a prior art, so its specific function and structure as well as the connection method between the vibration generator and the test bench will not be described in detail.

[0022] The present invention is further configured that: shock-proof foot pads are arranged at the four corners of the bottom of the test bench.

[0023] The above technical solution is beneficial in that the anti-vibration pads are provided to reduce the loss of the test bench during long-term testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional view of the present invention;

[0025] Figure 2 A three-dimensional view of the test bench in the present invention;

[0026] Figure 3 A three-dimensional view of a first installation state of the driving motor in the present invention;

[0027] Figure 4 for Figure 3 A three-dimensional view from the bottom perspective;

[0028] Figure 5 A three-dimensional view of a second installation state of the driving motor in the present invention;

[0029] Figure 6 It is a cross-sectional view of the first clamp in the present invention. DETAILED DESCRIPTION

[0030] The present invention provides a generator bearing vibration test bench 1, comprising a test bench 1, wherein the test bench 1 is provided with a fixing part for fixing an external bearing to be tested, a bracket is provided on one side of the test bench 1, a main board 3 is provided on the bracket, a driving motor 21 is provided on the main board 3, the driving motor 21 and the fixing part are linked to each other to drive the external bearing to be tested to operate and apply a pulling force to the bearing to be tested when the driving motor 21 is running, an exciting part for applying an exciting force to the bearing to be tested is provided on the test bench 1, and a first adjusting part for adjusting the relative height between the driving motor 21 and the test bench 1 and a first adjusting part for adjusting the direction of the output end of the driving motor 21 so that the exciting force applied by the exciting part A second adjusting member for axially or radially loading the bearing to be tested, the fixing member includes a first fixture detachably arranged on the test bench 1, the first fixture is composed of a fixing plate 4 and an insert shaft 41 arranged at the center of the fixing plate 4, a driven pulley 42 is sleeved on the insert shaft 41, and a first step groove is circumferentially opened on the inner circumferential wall at the bottom of the shaft hole of the driven pulley 42 for partially accommodating the external bearing to be tested and cooperating with the outer ring of the bearing to be tested, a second step groove is circumferentially opened on the outer circumferential wall of the insert shaft 41 for partially accommodating the external bearing to be tested and cooperating with the inner ring of the bearing to be tested, the first step groove and the second step groove are combined to form a rolling cavity 43 for accommodating and moving the external bearing to be tested, and the insert shaft 41 is perpendicular to the end face of the test bench 1. The fixing member also includes a second fixture detachably arranged on the test bench 1, the second fixture is composed of two relatively arranged bases 44, and an installation groove for installing an external motor to be tested is formed between the two bases 44. The output end of the driving motor 21 is provided with a driving pulley 211, and the driving member includes a transmission belt 22 for connecting the driving pulley 211 with the driven pulley 42 or connecting the driving pulley 211 with the output end of the external motor to be tested. A loading cylinder 31 is provided at the bottom of the main board 3, and a motor base 23 is connected to the bottom of the driving motor 21. A positioning seat 24 is provided on the motor base 23 toward the main board 3, and a through groove 32 for the positioning seat 24 to pass through is penetrated on the main board 3. The positioning seat 24 is provided with a swinging groove, in which a linkage shaft 242 is movably arranged, a loading pin 243 for fixing the linkage shaft 242 and the positioning seat 24 is connected between the linkage shaft 242 and the positioning seat 24, the linkage shaft 242 is arranged in linkage with the output end of the loading cylinder 31, and a force sensor 33 is connected between the linkage shaft 242 and the output end of the loading cylinder 31, and two adjusting rods 11 arranged opposite to each other are provided on the bracket along the height direction of the test bench 1, and sliders 5 are slidably arranged on the two adjusting rods 11 along the height direction of the test bench 1, and a plurality of first openings 111 are penetrated on the adjusting rod 11 along the opening direction of the adjusting rod 11, and a plurality of second openings 51 are provided on the bottom wall of the slider 5,Each of the second openings 51 is detachably connected to the first openings 111 that are aligned with each other by a first connecting bolt 52. A plurality of third openings are penetrated on the top wall of the slider 5 along the opening direction of the adjusting rod 11. The first adjusting member includes two connecting plates 34. The two connecting plates 34 are disposed on both sides of the main board 3. The two connecting plates 34 are respectively disposed in one-to-one correspondence with the two sliders 5. A plurality of fourth openings 341 are penetrated on the connecting plates 34. Each of the fourth openings 341 is detachably connected to a second connecting bolt 35 for threaded connection with the third openings that are aligned with each other when the connecting plates 34 are attached to the slider 5. The bottom wall of the main board 3 is provided with a plurality of connecting plates 34 at positions corresponding to the two connecting plates 34. The rotating structure is composed of two rotating seats 36 arranged opposite to each other and a rotating shaft 37 is rotatably connected between the two rotating seats 36. The two connecting plates 34 have wing plates 38 extending toward the main board 3. The two wing plates 38 correspond to the two rotating shafts 37 one by one and are connected. A support plate is arranged on the bracket. The support plate is composed of a horizontal plate 6 and a vertical plate 61 connected vertically. The vertical plate 61 is detachably arranged on the bracket. The horizontal plate 6 is provided with a plurality of fifth openings 62 for threaded connection of the second connecting bolts 35. The excitation member includes a vibration generator 63. The vibration end of the vibration generator 63 is arranged in cooperation with the test bench 1. The four corners of the bottom of the test bench 1 are provided with shockproof foot pads 12.

[0031] In the above technology, two types of brackets can be equipped according to the actual test scope and test requirements. The relative orientations between the main boards on the two brackets and the test bench are different, that is, the main board on one of the brackets is relatively parallel to the test bench, and the main board on the other bracket is relatively vertical to the test bench. The tension on both sides is collinear and reversed to eliminate the eccentric load, thereby extending the service life of the equipment. At the same time, two sets of different test structures are used to improve the test efficiency.

[0032] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention shall be defined by the attached claims and their equivalents.

Claims

1. A generator bearing vibration test bench, characterized in that: The invention comprises a test bench, wherein a fixing part for fixing an external bearing to be tested is arranged on the test bench, a bracket is arranged on one side of the test bench, a main board is arranged on the bracket, a driving motor is arranged on the main board, a driving part for driving the external bearing to be tested to operate and applying a tensile force to the bearing to be tested when the driving motor is running is linked and coordinated between the driving motor and the fixing part, an exciting part for applying an exciting force to the bearing to be tested is arranged on the test bench, a first adjusting part for adjusting the relative height between the driving motor and the test bench and a first adjusting part for adjusting the direction of the output end of the driving motor to allow the exciting force to be applied to the bearing to be tested are arranged on the bracket. The exciting force applied by the component is axially loaded or radially loaded on the second adjusting component to be tested, a loading cylinder is arranged at the bottom of the main board, a motor base is connected to the bottom of the driving motor, a positioning seat is arranged on the motor base toward the main board, a through groove for the positioning seat to pass through is penetrated on the main board, a swing groove is provided on the positioning seat, a linkage shaft is movably arranged in the swing groove, a loading pin for fixing the linkage shaft and the positioning seat is connected between the linkage shaft and the positioning seat, the linkage shaft is arranged in linkage with the output end of the loading cylinder, and a force sensor is connected between the linkage shaft and the output end of the loading cylinder.

2. A generator bearing vibration test bench according to claim 1, characterized in that: The fixing part includes a first fixture which can be detachably mounted on the test bench, the first fixture is composed of a fixing plate and an insert shaft arranged at the center of the fixing plate, a driven pulley is sleeved on the insert shaft, a first step groove is circumferentially opened on the inner peripheral wall of the bottom of the driven pulley shaft hole for partially accommodating an external bearing to be tested and cooperating with the outer ring of the bearing to be tested, a second step groove is circumferentially opened on the outer peripheral wall of the insert shaft for partially accommodating an external bearing to be tested and cooperating with the inner ring of the bearing to be tested, the first step groove and the second step groove are combined to form a rolling cavity for accommodating and moving an external bearing to be tested, the insert shaft is arranged perpendicular to the end face of the test bench, the fixing part also includes a second fixture which can be detachably mounted on the test bench, the second fixture is composed of two relatively arranged bases, and an installation groove for installing an external motor to be tested is formed between the two bases.

3. A generator bearing vibration test bench according to claim 2, characterized in that: The output end of the driving motor is provided with a driving pulley, and the driving member includes a transmission belt for connecting the driving pulley with the driven pulley or connecting the driving pulley with the output end of the external motor to be tested.

4. The generator bearing vibration test bench according to claim 1, characterized in that: The bracket is provided with two adjusting rods which are arranged opposite to each other in the height direction of the test bench, and sliders are arranged on the two adjusting rods so as to slide along the height direction of the test bench, and a plurality of first openings are penetrated on the adjusting rods in the direction in which the adjusting rods are opened, and a plurality of second openings are formed on the bottom wall of the slider, and each of the second openings is detachably connected to a first connecting bolt which is aligned with the respective first opening, and a plurality of third openings are penetrated on the top wall of the slider in the direction in which the adjusting rods are opened, and the first adjusting member comprises two connecting plates, and the two connecting plates are disposed on both sides of the main board, and the two connecting plates are respectively disposed in one-to-one correspondence with the two sliders, and a plurality of fourth openings are penetrated on the connecting plates, and each of the fourth openings is detachably connected to a second connecting bolt which is used for threaded connection with the respective aligned third openings when the connecting plates are attached to the slider.

5. The generator bearing vibration test bench according to claim 4, characterized in that: The bottom wall of the main board is provided with a rotating structure corresponding to the two connecting plates. The rotating structure is composed of two relatively arranged rotating seats and a rotating shaft is rotatably connected between the two rotating seats. The two connecting plates have wing plates extending toward the main board, and the two wing plates correspond to the two rotating shafts one by one and are connected.

6. The generator bearing vibration test bench according to claim 4, characterized in that: The bracket is provided with a support plate, which is composed of a horizontal plate and a vertical plate vertically connected, the vertical plate is detachably arranged on the bracket, and the horizontal plate is provided with a plurality of fifth openings for threaded connection of the second connecting bolts.

7. The generator bearing vibration test bench according to claim 1, characterized in that: The vibration exciting member comprises a vibration generator, and a vibration end of the vibration generator is arranged in cooperation with the test bench.

8. The generator bearing vibration test bench according to claim 1, characterized in that: Shock-proof pads are arranged at the four corners of the bottom of the test bench.

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