CN116519300A - Bearing fault simulation test bed - Google Patents
Bearing fault simulation test bed Download PDFInfo
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- CN116519300A CN116519300A CN202310467067.5A CN202310467067A CN116519300A CN 116519300 A CN116519300 A CN 116519300A CN 202310467067 A CN202310467067 A CN 202310467067A CN 116519300 A CN116519300 A CN 116519300A
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- 238000012360 testing method Methods 0.000 title claims abstract description 27
- 238000004088 simulation Methods 0.000 title claims abstract description 26
- 230000008093 supporting effect Effects 0.000 claims abstract description 46
- 238000004458 analytical method Methods 0.000 claims abstract description 12
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 230000033001 locomotion Effects 0.000 claims abstract description 8
- 230000008859 change Effects 0.000 claims abstract description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 3
- 230000004044 response Effects 0.000 abstract description 10
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000010606 normalization Methods 0.000 description 2
- 238000010183 spectrum analysis Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000004082 amperometric method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
- G01M13/045—Acoustic or vibration analysis
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
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- Acoustics & Sound (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention relates to a bearing fault simulation test stand, comprising: a supporting unit; the rotary unit is arranged on the supporting unit and is rotationally connected with the supporting unit, a coupler is arranged at the top of the rotary unit, and the coupler is connected with the angle change sensor and the vibration sensor so as to realize detection of a rotary unit angular domain vibration signal and analysis of fault positions and severity; the bearing unit is connected with the rotating unit, wherein a balancing weight is placed in the bearing unit, so that the bearing unit and the rotating unit can perform 180-degree reciprocating rotating motion around the supporting unit. According to the invention, by loading the vibration sensor, the measured vibration signals can be analyzed to obtain vibration responses with different fault types and different fault severity degrees, and the vibration sensor has a strong supporting effect on simulating the motion condition of the actual rotary platform bearing.
Description
Technical Field
The invention relates to the technical field of aerospace transmission tower rotary platforms, in particular to a bearing fault simulation test bed.
Background
The aerospace launching tower rotary platform mainly depends on a bearing as a rotary part, and the bearing part bears higher load in the running process of the platform. In the starting and stopping process of the platform, the platform generates larger inertia due to larger weight, and the bearing part also generates larger impact to influence the service life of the bearing.
The bearing has the characteristics of ultralow speed, heavy load, incomplete rotation and complex change of the acting direction of the load, and a large amount of manpower and material resources are consumed for disassembly detection.
The present invention has been made in view of this.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a bearing fault simulation test bed which can analyze measured vibration signals by loading a vibration sensor to obtain vibration responses of different fault types and different fault severity degrees and has a strong supporting effect on simulating the bearing movement condition of an actual rotary platform.
In order to solve the technical problems, the invention adopts the basic conception of the technical scheme that:
a bearing failure simulation test stand, comprising:
a supporting unit;
the rotary unit is arranged on the supporting unit and is rotationally connected with the supporting unit, a coupler is arranged at the top of the rotary unit, and the coupler is connected with the angle change sensor and the vibration sensor so as to realize detection of a rotary unit angular domain vibration signal and analysis of fault positions and severity;
the bearing unit is connected with the rotating unit, wherein a balancing weight is placed in the bearing unit, so that the bearing unit and the rotating unit can perform 180-degree reciprocating rotating motion around the supporting unit.
In a preferred embodiment of any of the foregoing aspects, the support unit includes a base, a plate, a joint, and a leg, wherein a top of the leg is connected to one end of the joint, another end of the joint is connected to the plate, and a middle of the plate is connected to the base.
In a preferred embodiment of any of the foregoing aspects, the swivel unit includes:
one end of the rotating shaft is rotationally connected with the base;
the lower rotary assembly is arranged above the base, and one end of the rotary shaft penetrates through the middle part of the lower rotary assembly and is rotationally connected with the lower rotary assembly;
the upper revolving body assembly is arranged at one end of the revolving shaft, which is far away from the lower revolving assembly, and one end of the revolving shaft penetrates through the middle part of the upper revolving body assembly and is rotationally connected with the upper revolving body assembly.
In a preferred embodiment of any of the foregoing, the lower swivel assembly comprises:
the lower bearing seat is arranged on the base;
the lower bearing is arranged on the lower bearing seat, and one end of the rotary shaft penetrates through the middle of the lower bearing seat and is in rotary connection with the lower bearing.
In a preferred embodiment of any of the foregoing, the lower swing combination further comprises:
the middle bearing is sleeved at one end of the rotary shaft and is in transition fit with the lower bearing;
the middle bearing cover is arranged on the middle bearing in a covering manner, and one end of the rotary shaft penetrates through the middle part of the middle bearing cover.
In a preferred embodiment of any of the foregoing aspects, the upper revolving unit assembly includes:
the upper bearing is sleeved at the other end of the rotary shaft and is rotationally connected with the rotary shaft;
the upper bearing cover is covered on the upper bearing, and the rotary shaft penetrates through the middle part of the upper bearing cover and is in rotary connection with the rotary shaft.
In a preferred embodiment of any of the foregoing aspects, the carrying unit includes:
and one side of the bearing piece is connected with the lower bearing and the upper bearing, wherein the balancing weight is placed in the bearing piece.
In a preferred embodiment of any of the foregoing, the carrier comprises:
the upper part of the supporting plate is used for accommodating the balancing weight;
one side of the vertical plate is connected with the lower bearing and the upper bearing, and the bottom of the vertical plate is connected with the supporting plate;
a side vertical plate, one side of which is connected with one side of the vertical plate, and the bottom of the side vertical plate is connected with the supporting plate;
and the opposite plate is connected with one side, far away from the vertical plate, of the side vertical plate, and the bottom of the opposite plate is connected with the supporting plate.
In a preferred embodiment of any of the foregoing, the carrier comprises:
the rib plates are respectively connected with the vertical plate and the supporting plate and are distributed along the length direction of the vertical plate;
and the reinforcing ribs are respectively connected with the vertical plate and the supporting plate.
In a preferred embodiment of any of the foregoing, the carrier comprises:
the handle is arranged on one side of the opposite plate.
By adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects.
The vibration response of the bearing under different loads can be simulated by matching with weights with different weights, and the vibration response of the bearing under different fault conditions can be simulated by matching with bearing parts with multiple fault types and severity.
The vibration sensor is loaded, so that the measured vibration signals can be analyzed, vibration responses of different fault types and different fault severity degrees can be obtained, and the vibration sensor has a strong supporting effect on the motion condition of the bearing of the analog actual rotary platform.
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. Some specific embodiments of the present application will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers in the drawings denote the same or similar parts or portions, and it will be understood by those skilled in the art that the drawings are not necessarily drawn to scale, in which:
FIG. 1 is a perspective view of a bearing failure simulation test stand of the present invention.
FIG. 2 is a schematic view of a support unit of the bearing failure simulation test stand of the present invention.
FIG. 3 is a schematic diagram of a rotary unit of the bearing failure simulation test stand of the present invention.
FIG. 4 is a schematic diagram of a load cell of the bearing failure simulation test stand of the present invention.
In the figure: the support unit 1, the revolving unit 2, the carrying unit 3, the base 4, the flat plate 5, the joint 6, the supporting leg 7, the lower bearing seat 8, the lower bearing 9, the lower revolving assembly 10, the middle bearing 11, the middle bearing cover 12, the revolving shaft 13, the upper revolving body assembly 14, the upper bearing 15, the upper bearing cover 16, the vertical plate 17, the side vertical plate 18, the counterweight 19, the handle 20, the opposite plate 21, the reinforcing rib 22, the rib plate 23, the supporting plate 24 and the coupling 25.
It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but rather to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments, the elements of which are schematically represented and not drawn to scale.
Detailed Description
In order to enable those skilled in the art to better understand the present application, the following description will make clear and complete descriptions of the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
In the description of the present application, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
The following embodiments of the present application will be described in detail with reference to a bearing failure simulation test stand, but the scope of protection of the present application is not limited by the embodiments.
As shown in fig. 1 to 4, the present invention provides a bearing failure simulation test stand, comprising:
a support unit 1;
the rotary unit 2 is arranged on the supporting unit 1 and is in rotary connection with the supporting unit 1, a coupler 25 is arranged at the top of the rotary unit 2, and the coupler 25 is connected with an angle change sensor and a vibration sensor so as to realize detection of a rotary unit angular domain vibration signal and analysis of fault positions and severity;
and the bearing unit 3 is connected with the rotary unit 2, wherein a balancing weight 19 is placed in the bearing unit 3 so as to realize 180-degree reciprocating rotary motion of the bearing unit 3 and the rotary unit 2 around the supporting unit 1.
In the bearing fault simulation test bed provided by the embodiment of the invention, through arranging the bearing unit 3 capable of bearing different weights, the bearing fault simulation test bed can be matched with weights of different weights to simulate the vibration response of bearings under different loads, bearing pieces with multiple fault types and severity are arranged, the vibration response of the bearings under different fault conditions can be simulated, when the bearing fault simulation test bed is used, through arranging the coupler at the top of the rotary unit 2, the coupler is connected with the angle change sensor and the vibration sensor, so that the measured vibration signals can be analyzed to obtain the vibration response of different fault types and different fault severity, and the bearing fault simulation test bed has a very strong supporting effect on the bearing motion condition of an analog actual rotary platform.
The vibration sensor does not directly convert the original mechanical quantity to be measured into electric quantity, but uses the original mechanical quantity to be measured as the input quantity of the vibration sensor, then receives the input quantity by the mechanical receiving part to form another mechanical quantity suitable for conversion, and finally converts the mechanical quantity into electric quantity by the electromechanical conversion part.
The vibration sensor transmits detected data to the controller in the detection process, the controller analyzes and processes collected data signals, the controller is a multifunctional data acquisition card with a PCI bus, the multifunctional data acquisition card comprises 12-bit A/D conversion, D/A conversion, digital quantity output and counter/timer functions, the requirements of a user on measurement and control can be met, the data acquisition card is connected to a screw connection terminal expansion board, signal lines are all connected to the expansion board, a current transformer and a voltage transformer are arranged in the controller, the current transformer converts larger current into smaller current according to a certain proportion through a closed iron core and a winding, namely high voltage is changed into low voltage, the current transformer is used for protecting a circuit, when faults occur, the circuit is switched to a relay so as to facilitate maintenance, replacement and the like of equipment, the current transformer is connected in series in the circuit, the two sides of the requirement are both sides of a closed loop, the secondary loop is in direct proportion to a primary loop under normal conditions, and the ratio cannot be exceeded.
The voltage transformer (potential transformer) and the current transformer are detection elements, the structures of the potential transformer and the current transformer are similar to a transformer, the voltage of a circuit can be changed, and the transformer is generally used for conveying electric energy or providing power for electric appliances; the voltage transformer provides a detection source or a detection object for the detection of equipment by changing voltage, can detect the voltage and the power of a circuit so as to facilitate the adjustment of a worker according to actual conditions, can also be used for protecting important equipment in the circuit when faults occur, realizes the automatic control of cutting off the circuit to reduce loss, directly converts the output value of a secondary winding according to an electromagnetic principle, and the capacitive voltage transformer needs to be connected with a capacitor in series to obtain the voltage.
The voltage transformer is connected in parallel between any two phases in a power supply circuit of the three-phase asynchronous motor, the input range of the current transformer is 0-2mA, the analog output range is 0-2mA, and the angle difference is as follows: 12', the output signal of the voltage transformer is sent to the controller, the current signal is input to one channel of the controller through simple processing, the voltage signal is sent to the other channel of the controller after passing through the conversion circuit, the current signal and the voltage signal are phase-shifted and subtracted in the controller, and finally the influence of power frequency 50Hz is eliminated.
Further, when the information detected by the vibration sensor needs to be filtered in the process of processing the vibration signal, a specific filtering process includes: the signal is low-pass filtered, so that the obtained low-frequency pulse signal is subjected to absolute value processing, signal smoothing, power spectrum analysis and pulse signal period analysis, and the information detected by the vibration sensor is filtered, so that whether the bearing is abnormal or not can be judged according to the occurrence or non-occurrence of certain high-frequency natural vibration, and defective bearing elements (such as an inner ring, an outer ring and rolling bodies) can be identified according to the frequency components of the data signal.
Furthermore, when detecting vibration signals, the main obstacle is the feature extraction of fault signals, and the main frequency part in the vibration signals covers the feature components reflecting fault information, so that the extraction difficulty is greatly increased. The difficulty of detecting faults by an amperometric method is extracted from the small changes generated by faults of the bearing in the vibration signal, and the small changes are often covered by the signal with the main frequency of 50Hz, so that the difficulty of extracting weak information in the current signal is further increased, and the accuracy of analysis and the identification capability of the faults are affected. The voltage and frequency of the current signal itself also have slight fluctuation, which is a factor that interferes with the analysis of the current signal, and when the amplitude caused by the fault reaches two percent of the amplitude of the main frequency, if the main frequency signal and the fault signal are analyzed together, the fault information and the main frequency information are not on an order of magnitude, so that any factor can lead to experiments not giving desired results in the analysis of the data acquisition signal.
Furthermore, in order to weaken the influence of the main frequency of 50Hz on fault information, the invention processes the current signals, because the frequency of the current signals and the frequency of the voltage signals are not changed along with the fluctuation of the vibration signals, the current and the voltage frequencies are basically the same, and the influence on the voltage signals is basically negligible when faults occur, the influence of the main frequency can be weakened by subtracting the voltage signals from the current signals, but the current signals are lagged a little more than the voltage signals, the phase of the current signals is the same before subtraction, and the normalization processing is carried out on the current signals and the voltage signals, so that the amplitude of the current signals and the voltage signals are within the same fluctuation range. And then, carrying out spectrum analysis on the obtained signals, effectively combining the current signals and the voltage signals to obtain excellent analysis effects, removing main interference parts before signal analysis after phase shifting, normalization and subtraction, and amplifying originally weak fault information after the main frequency is weakened by 50Hz, so that the subsequent signal analysis condition is more clear, and the analysis precision and the fault signal identification capability are improved.
As shown in fig. 1 to 4, the support unit 1 includes a base 4, a plate 5, a joint 6 and a leg 7, wherein the top of the leg 7 is connected with one end of the joint 6, the other end of the joint 6 is connected with the plate 5, and the middle of the plate 5 is connected with the base 4, so that when assembled, the top of the leg 7 is connected with the joint 6 through a screw, and the joint 6 is connected with the plate 5 through a screw, wherein the plate 5 is connected with the base 4 through a screw, thereby facilitating disassembly and connection.
As shown in fig. 1 to 4, the swing unit 2 includes:
a rotating shaft 13, one end of which is rotatably connected with the base 4;
the lower rotary assembly 10 is arranged above the base 4, and one end of the rotary shaft 13 penetrates through the middle part of the lower rotary assembly 10 and is in rotary connection with the lower rotary assembly 10;
the upper revolving body assembly 14 is arranged at one end of the revolving shaft 13 far away from the lower revolving body assembly 10, one end of the revolving shaft 13 penetrates through the middle part of the upper revolving body assembly 14 and is rotationally connected with the upper revolving body assembly 14, and the lower revolving body assembly 10 and the upper revolving body assembly 14 are arranged to play a role in limiting the revolving shaft 13, so that the structure of the revolving shaft is more stable, and the operation is convenient.
As shown in fig. 1 to 4, the lower swing assembly 10 includes:
a lower bearing seat 8 arranged on the base 4;
the lower bearing 9 is arranged on the lower bearing seat 8, and one end of the rotary shaft 13 penetrates through the middle part of the lower bearing seat 8 and is in rotary connection with the lower bearing 9;
the middle bearing 11 is sleeved at one end of the rotary shaft 13 and is in transition fit with the lower bearing 9;
the middle bearing cover 12 is covered on the middle bearing 11, one end of the rotating shaft 13 penetrates through the middle part of the middle bearing cover 12, when the middle bearing cover is used, the middle bearing cover can be matched with weights of different weights to simulate vibration response of bearings under different loads, and bearing pieces with multiple fault types and severity are matched to simulate vibration response of the bearings under different fault conditions.
As shown in fig. 1 to 4, the upper revolving unit 14 includes:
the upper bearing 15 is sleeved at the other end of the rotary shaft 13 and is rotationally connected with the rotary shaft 13;
the upper bearing cover 16 is covered on the upper bearing 15, the rotary shaft 13 penetrates through the middle of the upper bearing cover 16 and is connected with the rotary shaft 13 in a rotating way, the structure is simple, the disassembly and the assembly are convenient, the test is quick, the heights of the four supporting legs can be adjusted, and the platform is ensured to work on a horizontal plane.
As shown in fig. 1 to 4, the carrying unit 3 includes:
a carrier, one side of which is connected with the lower bearing 9 and the upper bearing 15, wherein the weight 19 is placed in the carrier, the carrier comprising:
the supporting plate 24 is arranged above the balancing weight 19, so that the balancing weights 19 with different weights can be placed on the supporting plate 24, the loading requirement of an experiment can be realized by adding a load, and in the design, an eccentric structure is used to be closer to the real load condition;
a vertical plate 17, one side of which is connected with the lower bearing 9 and the upper bearing 15, and the bottom of the vertical plate 17 is connected with the supporting plate 24, when the vertical plate is installed, one side of the vertical plate 17 is connected with the lower bearing 9 through screws, and the bottom of the vertical plate 17 is connected with the supporting plate 24 through screws, so that the vertical plate is convenient to disassemble and assemble when installed;
a side vertical plate 18, one side of which is connected with one side of the vertical plate 17, and the bottom of the side vertical plate 18 is connected with the supporting plate 24, when the side vertical plate 18 is assembled with the vertical plate 17 through screws, the bottom of the side vertical plate 18 is connected with the upper surface of the supporting plate 24 through screws;
a pair of plates 21 connected to a side of the side plates 18 remote from the vertical plates 17, and having bottoms of the pair of plates 21 connected to the pallet 24, wherein the pair of plates 21 are parallel to the vertical plates 17, and the bottoms of the pair of plates 21 are connected to the upper surface of the pallet 24 by screws;
the rib plates 23 are respectively connected with the vertical plate 17 and the supporting plate 24, and the rib plates 23 are distributed along the length direction of the vertical plate 17, wherein in order to enable the connection between the vertical plate 17 and the supporting plate 24 to be stronger, the rib plates 23 distributed along the length direction of the vertical plate 17 can be arranged, and the rib plates 23 are welded with the vertical plate 17 and the supporting plate 24, so that the structure of the rib plates can be firmer;
the reinforcing ribs 22 are respectively connected with the vertical plate 17 and the supporting plate 24, and the reinforcing ribs 22 are arranged at the contact positions of the vertical plate 17 and the supporting plate 24, so that the structure is more stable;
the handle 20 is arranged on one side of the opposite plate 21, and when the handle 20 is installed, the handle is welded or in threaded connection with the opposite plate 21, so that the installation is convenient.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A bearing failure simulation test stand, comprising:
a support unit (1);
the rotary unit (2) is arranged on the supporting unit (1) and is rotationally connected with the supporting unit (1), a coupler (25) is arranged at the top of the rotary unit (2), and the coupler (25) is connected with the angle change sensor and the vibration sensor so as to realize detection of a rotary unit angular domain vibration signal and analysis of fault positions and severity;
the bearing unit (3) is connected with the rotary unit (2), wherein a balancing weight (19) is placed in the bearing unit (3) so as to realize 180-degree reciprocating rotary motion of the bearing unit (3) and the rotary unit (2) around the supporting unit (1).
2. The bearing fault simulation test stand according to claim 1, wherein the supporting unit (1) comprises a base (4), a flat plate (5), a joint (6) and a supporting leg (7), the top of the supporting leg (7) is connected with one end of the joint (6), the other end of the joint is connected with the flat plate (5), and the middle part of the flat plate (5) is connected with the base (4).
3. Bearing failure simulation test stand according to claim 2, characterized in that the swivel unit (2) comprises:
one end of the rotating shaft (13) is rotationally connected with the base (4);
the lower rotary assembly (10) is arranged above the base (4), and one end of the rotary shaft (13) penetrates through the middle part of the lower rotary assembly (10) and is rotationally connected with the lower rotary assembly (10);
the upper revolving body assembly (14) is arranged at one end of the revolving shaft (13) far away from the lower revolving assembly (10), and one end of the revolving shaft (13) penetrates through the middle part of the upper revolving body assembly (14) and is rotationally connected with the upper revolving body assembly (14).
4. A bearing failure simulation test bench according to claim 3, characterized in that said lower swivel assembly (10) comprises:
the lower bearing seat (8) is arranged on the base (4);
the lower bearing (9) is arranged on the lower bearing seat (8), and one end of the rotary shaft (13) penetrates through the middle of the lower bearing seat (8) and is rotationally connected with the lower bearing (9).
5. The bearing failure simulation test stand according to claim 4, wherein the lower swing combination (10) further comprises:
the middle bearing (11) is sleeved at one end of the rotary shaft (13) and is in transition fit with the lower bearing (9);
the middle bearing cover (12) is covered on the middle bearing (11), and one end of the rotating shaft (13) penetrates through the middle part of the middle bearing cover (12).
6. The bearing failure simulation test stand according to claim 5, wherein the upper revolving body combination (14) includes:
an upper bearing (15) sleeved at the other end of the rotary shaft (13) and rotationally connected with the rotary shaft (13);
the upper bearing cover (16) is covered on the upper bearing (15), and the rotary shaft (13) penetrates through the middle part of the upper bearing cover (16) and is in rotary connection with the rotary shaft (13).
7. Bearing failure simulation test stand according to claim 6, characterized in that the carrying unit (3) comprises:
and one side of the bearing is connected with the lower bearing (9) and the upper bearing (15), wherein the balancing weight (19) is placed in the bearing.
8. The bearing failure simulation test stand of claim 7, wherein the carrier comprises:
a pallet (24) above which the weight (19) is placed;
one side of the vertical plate (17) is connected with the lower bearing (9) and the upper bearing (15), and the bottom of the vertical plate (17) is connected with the supporting plate (24);
a side vertical plate (18), one side of which is connected with one side of the vertical plate (17), and the bottom of the side vertical plate (18) is connected with the supporting plate (24);
and the opposite plate (21) is connected with one side, far away from the vertical plate (17), of the side vertical plate (18), and the bottom of the opposite plate (21) is connected with the supporting plate (24).
9. The bearing failure simulation test stand of claim 8, wherein the carrier comprises:
the rib plates (23) are respectively connected with the vertical plates (17) and the supporting plates (24), and the rib plates (23) are distributed along the length direction of the vertical plates (17);
and reinforcing ribs (22) respectively connected with the vertical plate (17) and the supporting plate (24).
10. The bearing failure simulation test stand of claim 9, wherein the carrier comprises:
a handle (20) arranged on one side of the opposite plate (21).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2023104412048 | 2023-04-23 | ||
| CN202310441204 | 2023-04-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116519300A true CN116519300A (en) | 2023-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310467067.5A Pending CN116519300A (en) | 2023-04-23 | 2023-04-26 | Bearing fault simulation test bed |
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