CN212513622U

CN212513622U - Bearing simulation loading test device

Info

Publication number: CN212513622U
Application number: CN202022142011.7U
Authority: CN
Inventors: 徐志国
Original assignee: Nantong Aerospace Machinery And Electronics Automatic Control Co ltd
Current assignee: Nantong Aerospace Machinery And Electronics Automatic Control Co ltd
Priority date: 2020-09-27
Filing date: 2020-09-27
Publication date: 2021-02-09
Anticipated expiration: 2030-09-27

Abstract

The utility model relates to the technical field of testing, and discloses a bearing simulation loading test device, including the installation flat board, the left side and the middle-end at installation flat board top all are bolted with the bearing frame, the inside rotation of bearing frame is connected with the transmission shaft, the right-hand member of transmission shaft is connected with power unit, the surface rotation of transmission shaft has cup jointed the bearing under test, the surface rotation of bearing under test has cup jointed the bearing housing, the top bolt of bearing housing has radial mechanism, the fixed surface of bearing housing installs vibration sensor; the utility model discloses can exert radial force and axial force simultaneously when detecting the bearing to the radial force and the axial force of applying are independent separately, do not have the influence each other, and the test equipment before having avoided will or simulate radial force, perhaps simulate the axial force, and on perhaps adding axial force to entire system and time axial force shared two bearing frames and one by survey the bearing, the effect is very poor.

Description

Bearing simulation loading test device

Technical Field

The utility model relates to a test technical field specifically is a bearing simulation load test device.

Background

The detection of the bearing generally simulates the bearing to be loaded and then drives the bearing to rotate at a high speed until the bearing fails, the number of rotating turns is recorded as the index of the service life and the reliability of the bearing, and the common loading method is to apply radial load to the bearing and then detect the radial load. However, in the actual working process of the bearing, the bearing is not only subjected to radial force, but also subjected to axial force sometimes, the original detection method cannot truly simulate the working condition that the bearing is subjected to both axial force and radial force, and therefore a bearing simulation loading test device is provided for solving the problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a bearing simulation load test device has solved the bearing in the actual work process, and the bearing not only receives radial force, sometimes still receives axial force simultaneously, and original detection method can not really simulate the problem of the operating mode that the bearing both received axial force and radial force.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a bearing simulation load test device, is dull and stereotyped including the installation, the left side and the equal bolt of middle-end at installation dull and stereotyped top have the bearing frame, the inside of bearing frame is rotated and is connected with the transmission shaft, the right-hand member of transmission shaft is connected with power unit, the surface of transmission shaft is rotated and has been cup jointed by the survey bearing, the surface of being surveyed the bearing rotates and has been cup jointed the bearing housing, the top bolt of bearing housing has radial mechanism, the fixed surface of bearing housing installs vibration sensor, the right side bolt of bearing housing has hollow formula pressure sensor, hollow formula pressure sensor's right side bolt has hollow pneumatic cylinder, the right side rotation that the surface of transmission shaft lies in hollow pneumatic cylinder is connected with thrust ball bearing, thrust ball bearing's right side bolt has lock nut, lock nut is connected with the transmission shaft.

Preferably, the radial mechanism comprises a radial pressure sensor, a hydraulic rod and a hydraulic support, the bottom of the radial pressure sensor is bolted with the top of the bearing sleeve, the top of the radial pressure sensor is bolted with the output end of the hydraulic rod, the top of the hydraulic rod is bolted with the inside of the hydraulic support, and the hydraulic support is bolted with the mounting plate.

Preferably, the power mechanism comprises a variable frequency motor and a coupling, the output end of the variable frequency motor is connected with the right side of the coupling, the left side of the coupling is connected with the right end of the transmission shaft, and the bottom of the variable frequency motor is fixedly mounted on the top of the mounting plate.

Preferably, the surface of the hydraulic support is provided with a hole, and the vibration sensor is located inside the hole.

Preferably, the bearing blocks on two sides of the detected bearing are symmetrically arranged, and two ends of the transmission shaft are respectively and rotatably connected with the two bearing blocks.

Preferably, the transmission shaft is located in the hollow of the hollow pressure sensor and the hollow hydraulic cylinder, and the hollow pressure sensor and the hollow hydraulic cylinder are not in contact with the transmission shaft.

A method for simulating a loading test of a bearing comprises the following steps:

step 1: assembly installation: installing a bearing to be measured in a bearing sleeve on the surface of a transmission shaft, then sequentially installing a hollow pressure sensor, a hollow hydraulic cylinder, a thrust ball bearing and a locking nut, fastening the locking nut, installing the assembly between two bearing seats, then connecting the right end of the transmission shaft with a variable frequency motor through a coupling, sequentially installing a radial pressure sensor, a hydraulic rod and a hydraulic support at the top of the bearing sleeve, reserving a hole on the surface of the hydraulic support, and fixing a vibration sensor on the bearing sleeve through the hole;

step 2: starting a motor: the method comprises the steps that a variable frequency motor is started, the variable frequency motor drives a transmission shaft to rotate through a coupling, the variable frequency motor is used for providing power, a driving system rotates according to a set rotating speed, namely, a detected bearing is driven to rotate, a coder is arranged in the variable frequency motor and can be used for recording the number of rotating circles of the detected bearing in real time, the number of working circles of the bearing is a bearing reliability index, the two bearing seats are far away from the detected bearing, when the detected bearing is pressed, the two bearing seats share the radial pressure of the detected bearing, the bearing in the two bearing seats is guaranteed not to be influenced even if the detected bearing is pressed to be damaged, the two bearing seats are far away from the detected bearing, and the influence on a vibration sensor;

and step 3: and (3) radial testing: the hydraulic rod is started, the hydraulic rod applies pressure to the bearing sleeve through the radial pressure sensor, the pressure applied to the detected bearing can be detected through the radial pressure sensor in real time during detection, the output pressure of the hydraulic rod is adjusted at any time according to the pressure, and the detected bearing is guaranteed to be always subjected to design pressure during rotation;

and 4, step 4: and (3) axial testing: hollow formula pressure sensor, hollow pneumatic cylinder are installed to the axial of bearing housing, detect axial pressure through hollow formula pressure sensor similarly, and axial pressure is adjusted at any time to the hollow pneumatic cylinder of rethread, and when the high-speed rotatory during operation of bearing, bearing housing, hollow formula pressure sensor, hollow pneumatic cylinder all are in quiescent condition, measure and control and do not receive the rotational speed influence.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model discloses can exert radial force and axial force simultaneously when detecting the bearing to the radial force and the axial force of applying are independent separately, do not have the influence each other, and the test equipment before having avoided will or simulate radial force, perhaps simulate the axial force, and on perhaps adding axial force to entire system and time axial force shared two bearing frames and one by survey the bearing, the effect is very poor.

Drawings

FIG. 1 is a front view of the structure of the present invention;

fig. 2 is a left side view of the structure of the present invention.

In the figure: 1. installing a flat plate; 2. a bearing seat; 3. a drive shaft; 4. a power mechanism; 41. a variable frequency motor; 42. a coupling; 5. a bearing to be measured; 6. a bearing housing; 7. a radial mechanism; 71. a radial pressure sensor; 72. a hydraulic lever; 73. a hydraulic support; 8. a vibration sensor; 9. a hollow type pressure sensor; 10. a hollow hydraulic cylinder; 11. a thrust ball bearing; 12. and locking screws.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, a bearing simulation loading test device comprises a mounting plate 1, bearing seats 2 are bolted on the left side and the middle end of the top of the mounting plate 1, a transmission shaft 3 is rotatably connected inside the bearing seats 2, a power mechanism 4 is connected at the right end of the transmission shaft 3, a bearing 5 to be tested is rotatably sleeved on the surface of the transmission shaft 3, a bearing sleeve 6 is rotatably sleeved on the surface of the bearing 5 to be tested, a radial mechanism 7 is bolted on the top of the bearing sleeve 6, a vibration sensor 8 is fixedly installed on the surface of the bearing sleeve 6, a hollow pressure sensor 9 is bolted on the right side of the bearing sleeve 6, a hollow hydraulic cylinder 10 is bolted on the right side of the hollow pressure sensor 9, a thrust ball bearing 11 is rotatably connected on the surface of the transmission shaft 3 and positioned on the right side of the hollow hydraulic cylinder 10, a lock nut 12 is bolted on the right side of the thrust ball bearing 11, the radial force and the axial force can be simultaneously applied when the bearing is detected, the applied radial force and the applied axial force are independent and have no influence on each other, and the problem that the prior test equipment needs to simulate the radial force or the axial force is distributed to two bearing seats 2 and one detected bearing 5 when the axial force is applied to the whole system is avoided, so that the effect is poor.

In this embodiment, the radial mechanism 7 includes a radial pressure sensor 71, a hydraulic rod 72, and a hydraulic support 73, the bottom of the radial pressure sensor 71 is bolted to the top of the bearing housing 6, the top of the radial pressure sensor 71 is bolted to the output end of the hydraulic rod 72, the top of the hydraulic rod 72 is bolted to the inside of the hydraulic support 73, the hydraulic support 73 is bolted to the mounting plate 1, the hydraulic support 73 supports the hydraulic rod 72, the hydraulic rod 72 is started, the hydraulic rod 72 drives the radial pressure sensor 71 to apply pressure to the bearing housing 6, and the radial pressure sensor 71 acquires pressure information.

In this embodiment, the power mechanism 4 includes a variable frequency motor 41 and a coupling 42, an output end of the variable frequency motor 41 is connected to a right side of the coupling 42, a left side of the coupling 42 is connected to a right end of the transmission shaft 3, a bottom of the variable frequency motor 41 is fixedly mounted to a top of the mounting plate 1, the variable frequency motor 41 drives the coupling 42 to rotate, and the coupling 42 drives the transmission shaft 3 to rotate.

In this embodiment, the surface of hydraulic support 73 has been seted up the hole, and vibration sensor 8 is located the inside in hole, makes things convenient for vibration sensor 8 to inspect.

In this embodiment, bearing frame 2 by 5 both sides of bearing 5 is the symmetry and sets up, the both ends of transmission shaft 3 rotate with two bearing frames 2 respectively and are connected, two bearing frames 2 are far away from by bearing 5, share by two bearing frames 2 when being surveyed bearing 5 pressurized and be connected, guarantee even the crushing by the bearing in two bearing frames 2 of being surveyed bearing 5 can not influence, two bearing frames 2 keep away from by bearing 5, can minimize the influence to the vibration sensor 8 of installation on the bearing housing 6.

In this embodiment, the transmission shaft 3 is located in the hollow portion inside the hollow type pressure sensor 9 and the hollow hydraulic cylinder 10, the hollow type pressure sensor 9 and the hollow hydraulic cylinder 10 are not in contact with the transmission shaft 3, when the measured bearing 5 rotates at a high speed to work, the bearing sleeve 6, the hollow type pressure sensor 9 and the hollow hydraulic cylinder 10 are all in a static state, and measurement and control are not affected by the rotating speed.

step 1: assembly installation: installing a bearing 5 to be measured in a bearing sleeve 6 on the surface of a transmission shaft 3, then sequentially installing a hollow pressure sensor 9, a hollow hydraulic cylinder 10, a thrust ball bearing 11 and a locking nut 12, fastening the locking nut 12, installing the assembly between two bearing seats 2, then connecting the right end of the transmission shaft 3 with a variable frequency motor 41 through a coupling 42, sequentially installing a radial pressure sensor 71, a hydraulic rod 72 and a hydraulic support 73 on the top of the bearing sleeve 6, reserving a hole on the surface of the hydraulic support 73, and fixing a vibration sensor 8 on the bearing sleeve 6 through the hole;

step 2: starting a motor: the method comprises the following steps that a variable frequency motor 41 is started, the variable frequency motor 41 drives a transmission shaft 3 to rotate through a coupling 42, the variable frequency motor 41 is used for providing power, a driving system rotates according to a set rotating speed, namely, the detected bearing 5 is driven to rotate to work, an encoder is arranged in the variable frequency motor 41 and can be used for recording the number of rotating circles of the detected bearing 5 in real time, the number of working circles of the bearing is a bearing reliability index, two bearing seats 2 are far away from the detected bearing 5, when the detected bearing 5 is pressed, the radial pressure of the detected bearing 5 is shared by the two bearing seats 2, the bearing in the two bearing seats 2 cannot be influenced even if the detected bearing 5 is crushed, the two bearing seats 2 are far away from the detected bearing 5, and the influence on a vibration sensor 8 arranged on a bearing sleeve;

and step 3: and (3) radial testing: the hydraulic rod 72 is started, the hydraulic rod 72 applies pressure to the bearing sleeve 6 through the radial pressure sensor 71, the pressure on the detected bearing 5 can be detected through the radial pressure sensor 71 in real time during detection, the output pressure of the hydraulic rod 72 is adjusted at any time according to the pressure, and the detected bearing 5 is guaranteed to be always subjected to design pressure during rotation;

and 4, step 4: and (3) axial testing: hollow type pressure sensor 9, hollow hydraulic cylinder 10 are installed to the axial of bearing housing 6, detect axial pressure through hollow type pressure sensor 9 similarly, and axial pressure is adjusted at any time through hollow hydraulic cylinder 10 to the rethread, and when being surveyed bearing 5 high-speed rotatory work, bearing housing 6, hollow type pressure sensor 9, hollow hydraulic cylinder 10 all are in quiescent condition, measure and control and do not receive the rotational speed influence.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a bearing simulation load test device, includes installation flat board (1), its characterized in that: the left side and the middle end of the top of the installation flat plate (1) are respectively bolted with a bearing seat (2), the inside of the bearing seat (2) is rotatably connected with a transmission shaft (3), the right end of the transmission shaft (3) is connected with a power mechanism (4), the surface of the transmission shaft (3) is rotatably sleeved with a tested bearing (5), the surface of the tested bearing (5) is rotatably sleeved with a bearing sleeve (6), the top of the bearing sleeve (6) is bolted with a radial mechanism (7), the surface of the bearing sleeve (6) is fixedly provided with a vibration sensor (8), the right side of the bearing sleeve (6) is bolted with a hollow pressure sensor (9), the right side of the hollow pressure sensor (9) is bolted with a hollow hydraulic cylinder (10), the surface of the transmission shaft (3) is rotatably arranged on the right side of the hollow hydraulic cylinder (10) and is connected with a thrust ball bearing (11), the right side of the thrust ball bearing (11) is bolted with a locking nut (12), and the locking nut (12) is connected with the transmission shaft (3).

2. A bearing simulation loading test apparatus according to claim 1, wherein: the radial mechanism (7) comprises a radial pressure sensor (71), a hydraulic rod (72) and a hydraulic support (73), wherein the bottom of the radial pressure sensor (71) is bolted with the top of the bearing sleeve (6), the top of the radial pressure sensor (71) is bolted with the output end of the hydraulic rod (72), the top of the hydraulic rod (72) is bolted with the inner part of the hydraulic support (73), and the hydraulic support (73) is bolted with the mounting flat plate (1).

3. A bearing simulation loading test apparatus according to claim 1, wherein: the power mechanism (4) comprises a variable frequency motor (41) and a coupling (42), the output end of the variable frequency motor (41) is connected with the right side of the coupling (42), the left side of the coupling (42) is connected with the right end of the transmission shaft (3), and the bottom of the variable frequency motor (41) is fixedly mounted with the top of the mounting flat plate (1).

4. A bearing simulation loading test apparatus according to claim 2, wherein: the surface of the hydraulic support (73) is provided with a hole, and the vibration sensor (8) is located inside the hole.

5. A bearing simulation loading test apparatus according to claim 1, wherein: the bearing blocks (2) on two sides of the bearing (5) to be measured are symmetrically arranged, and two ends of the transmission shaft (3) are respectively rotatably connected with the two bearing blocks (2).

6. A bearing simulation loading test apparatus according to claim 1, wherein: the transmission shaft (3) is positioned in the hollow centers of the hollow pressure sensor (9) and the hollow hydraulic cylinder (10), and the hollow pressure sensor (9) and the hollow hydraulic cylinder (10) are not in contact with the transmission shaft (3).