CN215910096U - An experimental bench for simulating the slip of cylindrical roller bearing cage - Google Patents
An experimental bench for simulating the slip of cylindrical roller bearing cage Download PDFInfo
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- CN215910096U CN215910096U CN202122086948.1U CN202122086948U CN215910096U CN 215910096 U CN215910096 U CN 215910096U CN 202122086948 U CN202122086948 U CN 202122086948U CN 215910096 U CN215910096 U CN 215910096U
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Abstract
本实用新型公开了一种模拟圆柱滚子轴承保持架打滑的实验台，包括有动力装置Ⅰ，动力装置Ⅱ，加载装置，支撑装置，传动装置，底座Ⅰ，底座Ⅱ和底座Ⅲ，所述动力装置Ⅰ包括有固定在底座Ⅰ上的电机支架Ⅰ及其所对应的电机Ⅰ，所述动力装置Ⅱ包括有固定在底座Ⅱ上的电机支架Ⅱ及其所对应的电机Ⅱ，所述电机支架Ⅰ及电机支架Ⅱ底部有支撑条，所述支撑条可以实现散热功能；本实用新型的一种模拟圆柱滚子轴承保持架打滑的实验台，通过调节电机的转速、以及加载装置的载荷来检测在不同转速和载荷下保持架打滑对轴承振动造成的影响。
The utility model discloses a test bench for simulating the sliding of a cylindrical roller bearing cage, comprising a power device I, a power device II, a loading device, a support device, a transmission device, a base I, a base II and a base III. The device I includes a motor bracket I fixed on the base I and its corresponding motor I, the power device II includes a motor bracket II fixed on the base II and its corresponding motor II, and the motor bracket I And there are support bars at the bottom of the motor bracket II, and the support bars can realize the function of heat dissipation; the utility model is a test bench for simulating the sliding of the cylindrical roller bearing cage, by adjusting the rotational speed of the motor and the load of the loading device to detect the Effects of cage slippage on bearing vibration under different speeds and loads.
Description
Technical Field
The utility model relates to an experiment table, in particular to an experiment table capable of simulating the slippage of a cylindrical roller bearing retainer.
Background
The cylindrical roller bearing has good running stability, is used as an important part in mechanical equipment, and is widely applied to mechanical equipment such as various motors, medical instruments, cutting machine tools and the like. With the development of the industry, the requirements on the quality and the rotating speed of the bearing are higher and higher. The condition of bearing sliding wear can occur in the high-speed bearing, and the bearing sliding wear can cause the bearing wear to be further aggravated, so that the service life of mechanical equipment and the processing quality of products are influenced to a great extent. Therefore, the sliding factor of the rolling bearing, particularly the influence of the sliding of the retainer on the sliding condition in the rolling bearing can be known, so that the bearing failure mechanism can be further analyzed, and the running state and the reasonable use environment of the rolling bearing can be more scientifically mastered. However, the bearing running in the actual environment cannot provide the slipping condition of the bearing retainer and the influence of factors such as load, rotating speed and the like on the slipping vibration of the bearing due to the limitation of the running environment and the particularity of the structure of the cylindrical roller bearing retainer. Therefore, the experiment table for simulating the sliding of the cylindrical roller bearing retainer is particularly important for bearing sliding research.
The cage slip ratio is generally used to characterize the slip condition of the bearing interior as a whole, and its common calculation formula is as follows:
theoretical rotary formula of the retainer:
γ＝D cosα/dm
in the formula: n ismCage rotation speed (r/min);
ni-inner ring rotational speed (r/min);
no-outer ring rotation speed (r/min);
d-ball diameter (mm);
α -contact angle (rad);
dm-bearing pitch circle diameter (mm);
slip ratio S: (theoretical rotation speed-actual rotation speed)/theoretical rotation speed:
s: slip rate
nm: theoretical rotational speed (r/min) of the cage;
ωc: actual rotational speed (r/min) of the cage;
as can be seen from the above formula, except for nm、niThe rest are the geometric parameters of the bearing except the unknown numbers. Wherein n isiIs the bearing inner ring rotational speed, which is equal to the rotational speed of the shaft, and the actual rotational speed n of the cagemAre often difficult to obtain; the main influence factors of the retainer slip comprise the inner ring rotating speed, the bearing load, the lubrication condition and the like. The bearing retainer slip rate is researched by integrating several influence factors into an experimental system, which is another problem that can be solved in the experimental system building process.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing an experiment table for simulating the slippage of a cylindrical roller bearing retainer, which detects the influence of the slippage of the retainer on the vibration of a bearing under different rotating speeds and loads by adjusting the rotating speed of a servo motor and the load of a loading device.
In order to solve the technical problem, the utility model provides a test bench for simulating the slipping of a cylindrical roller bearing retainer, which comprises a power device I, a power device II, a loading device, a supporting device, a transmission device, a base I, a base II and a base III, wherein the power device I comprises a motor support I fixed on the base I and a motor I corresponding to the motor support I, the power device II comprises a motor support II fixed on the base II and a motor II corresponding to the motor support II, and supporting bars are arranged at the bottoms of the motor support I and the motor support II and can realize the heat dissipation function.
The loading device is fixed on the base III and comprises a support frame, a loading sliding block, a loading bearing, a miniature hydraulic press and a pressure sensor, a guide rail is arranged inside the support frame, the miniature hydraulic press can apply pressure to the loading sliding block, the pressure sensor is fixed on the loading sliding block and can measure the load size, a groove is formed in the outer portion of the loading sliding block and can slide up and down along the guide rail inside the support frame, and the loading bearing is arranged inside the loading sliding block, so that the functions of loading and unloading the rotating shaft are achieved.
Still be fixed with strutting arrangement on the base III, strutting arrangement includes support bearing I, support bearing II and experiment bearing, support bearing I, support bearing II and experiment bearing adopt transition complex mode to fix respectively at back bearing frame I, inside back bearing frame II and the experiment bearing frame, can install acceleration sensor additional on the experiment bearing frame and detect vibration data.
The transmission device comprises a coupler I, a coupler II, a rotating shaft and a speed regulating shaft, wherein one end of the coupler I is connected with an extending shaft of the motor I, the other end of the coupler I is connected with the rotating shaft, and the other end of the rotating shaft is fixed with an inner ring of an experimental bearing in the supporting device in an interference fit mode; one end of the coupler II is connected with an extending shaft of the motor II, the other end of the coupler II is connected with a speed regulating shaft, and an adjusting finger is machined at the other end of the speed regulating shaft and can be matched with a groove of the experimental bearing retainer.
Base I, base II and III bottoms of base have spout I, spout II to adopt clearance fit's mode and the assembly of slide rail I and slide rail II.
Preferably, the support bearing I and the support bearing II are angular contact ball bearings, and the experimental bearing is a cylindrical roller bearing.
Preferably, the motor is a servo motor capable of accurately controlling the rotating speed, and the coupler is a quincunx flexible coupler with blind holes at two ends.
Advantageous effects
(1) According to the experiment table for simulating the slippage of the cylindrical roller bearing retainer, the rotating speed of the experiment bearing retainer is controlled through the transmission device so as to adjust the slippage rate of the bearing retainer, different pressures are applied to the rotating shaft by matching with the loading device, the rotating speed of the experiment bearing retainer is controlled under different pressure states, and the purpose of accurately controlling the slippage rate of the experiment bearing retainer is achieved.
(2) According to the experiment table for simulating the slippage of the cylindrical roller bearing retainer, the adjusting finger matched with the groove of the experiment bearing retainer is processed at one end of the speed regulating shaft, so that the influence of the slippage of the experiment bearing retainer on the bearing vibration can be detected on the premise of not damaging the structure of the bearing retainer.
(3) The experiment table for simulating the slippage of the cylindrical roller bearing retainer is novel in structure and convenient to operate, and all devices and components are more convenient to mount and dismount through threaded connection and a transition fit mounting mode.
Drawings
FIG. 1 is a schematic structural diagram of a rolling bearing test bed;
FIG. 2 is a schematic structural diagram of a power plant;
FIG. 3 is a schematic structural diagram of a loading device;
FIG. 4 is a schematic structural view of the support device;
FIG. 5 is a schematic view of the transmission;
FIG. 6 is a schematic structural view of the bottom surface of the base;
FIG. 7 is a schematic view of the assembly of the adjustment fingers and the experimental bearing;
in the figure: 1-power unit I, 11-motor support I, 12-motor I, 111-supporting strip, 112-bolt, 2-power unit II, 21-motor support II, 22-motor II, 211-supporting strip, 212-bolt, 3-loading device, 31-supporting frame, 32-loading slide block, 33-loading bearing, 34-micro hydraulic press, 35-pressure sensor, 311-guide rail, 4-supporting device, 41-supporting bearing I, 42-supporting bearing II, 43-experimental bearing, 411-supporting bearing seat I, 421-supporting bearing seat II, 431-experimental bearing seat, 432-holding frame groove, 5-transmission device, 51-coupling I, 52-coupling II, 53-rotating shaft, 54-speed regulating shaft, 541-regulating finger, 6-base I, 61-sliding groove I, 62-sliding groove II, 611-sliding rail I, 621-sliding rail II, 7-base II, 8-base III.
Detailed Description
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
as shown in fig. 1, a laboratory bench for simulating the slipping of a cylindrical roller bearing retainer comprises a power device i 1, a power device ii 2, a loading device 3, a supporting device 4, a transmission device 5, a base i 6, a base ii 7 and a base iii 8, as shown in fig. 1 and fig. 2, the power device i 1 comprises a motor support i 11 fixed on the base i 6 through threaded connection and a motor i 12 fixed on the motor support i 11 through four bolts 112, and a supporting strip 111 is arranged at the bottom of the motor support i 11 so as to facilitate the heat dissipation of the motor i 12; as shown in fig. 1 and 4, in an experiment, the motor i 12 starts to rotate, the motor i 12 drives the coupling i 51 clamped on the extending shaft of the motor i 12 to rotate, the coupling i 51 drives the clamped rotating shaft 53 to rotate, in order to maintain stable operation, the base iii 8 is fixedly connected with the supporting bearing seat i 411 in a threaded manner, the supporting bearing seat i 411 is internally provided with the supporting bearing i 41 in a transition fit manner, the central height of the supporting bearing i 41 is the same as that of the motor i 12, and the supporting bearing i 41 is installed with the rotating shaft 53 by adopting a base hole system; in order to simulate the load problem in the actual operation process of the bearing, as shown in fig. 1, 3, 4 and 5, the experiment table is provided with a loading device 3, the loading device 3 comprises a support frame 31, a loading slider 32, a loading bearing 33, a micro hydraulic press 34 and a pressure sensor 35, a guide rail 311 is arranged in the support frame 31, the micro hydraulic press 34 can apply pressure to the loading slider 32, the pressure sensor 35 is fixed on the loading slider 32 and can measure the load size, a groove is formed in the outer part of the loading slider 32 and can slide up and down along the guide rail 311 in the support frame 31, the loading bearing 33 is arranged in the loading slider 32, the loading bearing 33 is in interference fit with a rotating shaft 53, the central height of the loading bearing 33 is the same as that of a motor i 12, so that the loading and unloading functions of the loading device 3 on a rotating shaft 53 are realized, the rotating shaft 53 is fixed with an inner ring of an experiment bearing 43 through interference fit, experiment bearing 43 outer lane adopts transition fit's mode to fix inside experiment bearing frame 431, experiment bearing frame 431 passes through threaded connection to be fixed on base III 8, the central height of experiment bearing 43 is the same with the central height of I12 of motor and loading bearing 33, the torque and the rotational speed of I12 of motor pass through pivot 53 through shaft coupling I51 and transmit experiment bearing 43 inner circle, loading device 3's load is enough to transmit experiment bearing 43 inner circle through pivot 53, experiment bearing 43 accepts the load and rotates with I12 synchronous motion of motor.
As shown in fig. 1, 4 and 5, the power device ii 2 includes a motor support ii 21 fixed on a base ii 7 through a threaded connection and a motor ii 22 fixed on the motor support ii 21 through four bolts 212, a support bar 211 is provided at the bottom of the motor support ii 21 so as to facilitate heat dissipation of the motor ii 22, the motor ii 22 drives a coupling ii 52 clamped on an extending shaft of the motor ii 22 to rotate when operating, the coupling ii 52 drives a clamped speed-adjusting shaft 54 to rotate, a support bearing seat ii 421 is fixed on the base iii 8 through a threaded connection for maintaining stable operation, a support bearing ii 42 is installed inside the support bearing seat ii 421 in a transition fit manner, the center height of the support bearing ii 42 is the same as the center height of the motor ii 22, the size and the center height of the motor ii 22 are consistent with the size and the center height of the motor i 12, the support bearing ii 42 is installed with the speed-adjusting shaft 54 through a base hole system, the effect of supporting the speed regulation shaft 54 to rotate stably is achieved, the other end of the speed regulation shaft 54 is provided with the adjusting finger 541, as shown in fig. 1 and 7, the adjusting finger 541 can be matched with the groove 432 of the experimental bearing 43 retainer, and the experimental bearing 43 retainer can rotate at the same speed as the motor ii 22.
As shown in fig. 1, fig. 4 and fig. 6, there are I61 of spout, II 62 of spout in base I6, II 7 of base and III 8 bottom of base, I61 of spout, II 62 of spout adopt clearance fit's mode and slide rail I611 and II 621 of slide rail assembly, with I6 of base, II 7 of base and III 8 segmentation of base are in order to reduce I6 of base, the last motor I12 of II 7 of base, the influence that II 22 vibrations of motor caused the vibration of experiment bearing 43, it is in order to guarantee the axiality of each device on base and the base to set up spout and slide rail.
As shown in fig. 1, fig. 4 and fig. 7, when the experiment table is in operation, the rotating speeds of the rotating shaft 53 and the speed regulating shaft 54 are changed by adjusting the rotating speeds of the motor i 12 and the motor ii 22, so as to adjust the relative rotating speeds of the inner ring of the experiment bearing 43 and the retainer of the experiment bearing 43, so as to achieve the purpose of generating relative sliding, load data is acquired by the pressure sensor 35 in the loading device 3, and vibration data is acquired by the acceleration sensor placed on the experiment bearing seat 431 during the experiment, so as to judge the slipping condition of the bearing retainer and the influence of the factors such as the load and the rotating speed on the slipping vibration of the bearing.
The embodiments of the present invention have been described in detail, but the embodiments are merely examples, and the present invention is not limited to the above-described embodiments. Any equivalent modifications and substitutions to those skilled in the art are also within the scope of the present invention. Accordingly, equivalent alterations and modifications are intended to be included within the scope of the utility model, without departing from the spirit and scope of the utility model.
Claims (5)
1. The utility model provides a laboratory bench that simulation cylindrical roller bearing holder skidded which characterized in that: including power device I (1), power device II (2), loading device (3), strutting arrangement (4), transmission (5), base I (6), base II (7) and base III (8), power device I (1) is including fixing motor support I (11) on base I (6) and motor I (12) that correspond, power device II (2) are including fixing motor support II (21) on base II (7) and motor II (22) that correspond, there are support bar (111) motor support I (11) and motor support II (21) bottom, the heat dissipation function can be realized in support bar (111).
2. A test bench for simulating the slippage of a cylindrical roller bearing cage according to claim 1, wherein: be fixed with loading device (3) on base III (8), loading device (3) are including support frame (31), loading slider (32), loading bearing (33), miniature hydraulic press (34) and pressure sensor (35), there is guide rail (311) support frame (31) inside, loading slider (32) outside is fluted can slide from top to bottom along support frame (31) inner rail (311).
3. A test bench for simulating the slippage of a cylindrical roller bearing cage according to claim 1, wherein: still be fixed with strutting arrangement (4) on base III (8), strutting arrangement (4) are including supporting bearing I (41), supporting bearing II (42) and experiment bearing (43), supporting bearing I (41), and supporting bearing II (42) and experiment bearing (43) adopt transition fit's mode to fix respectively at supporting bearing frame I (411), inside supporting bearing frame II (421) and experiment bearing frame (431), can install acceleration sensor additional on experiment bearing frame (431) and detect vibration data.
4. A test bench for simulating the slip of a cylindrical roller bearing cage according to claim 1 or 3, wherein: the transmission device (5) comprises a coupler I (51), a coupler II (52), a rotating shaft (53) and a speed regulating shaft (54), one end of the coupler I (51) is connected with an extending shaft of the motor I (12), the other end of the coupler I is connected with the rotating shaft (53), and the other end of the rotating shaft (53) is fixed with an inner ring of an experimental bearing (43) in the supporting device (4) in an interference fit mode; one end of the coupler II (52) is connected with an extending shaft of the motor II (22), the other end of the coupler II is connected with a speed regulating shaft (54), an adjusting finger (541) is machined at the other end of the speed regulating shaft (54), and the adjusting finger (541) can be matched with a retainer groove (432) of the experimental bearing (43).
5. A test bench for simulating the slippage of a cylindrical roller bearing cage according to claim 1, wherein: base I (6), base II (7) and base III (8) bottom have spout I (61), spout II (62) adopt clearance fit's mode and II (621) assembles of slide rail I (611) and slide rail.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122086948.1U CN215910096U (en) | 2021-08-31 | 2021-08-31 | An experimental bench for simulating the slip of cylindrical roller bearing cage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122086948.1U CN215910096U (en) | 2021-08-31 | 2021-08-31 | An experimental bench for simulating the slip of cylindrical roller bearing cage |
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| CN215910096U true CN215910096U (en) | 2022-02-25 |
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| CN202122086948.1U Active CN215910096U (en) | 2021-08-31 | 2021-08-31 | An experimental bench for simulating the slip of cylindrical roller bearing cage |
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