CN213456097U

CN213456097U - Parallel bearing combination fault simulation experiment device

Info

Publication number: CN213456097U
Application number: CN202022963550.7U
Authority: CN
Inventors: 尹学慧; 阙洪军; 唐涛; 周桂源; 陈巧
Original assignee: Chongqing Gearbox Co Ltd
Current assignee: Chongqing Gearbox Co Ltd
Priority date: 2020-12-10
Filing date: 2020-12-10
Publication date: 2021-06-15
Anticipated expiration: 2030-12-10

Abstract

The utility model discloses a parallel bearing combination fault simulation experiment device, which comprises two opposite mounting seats, wherein at least two rotatable connecting shafts are arranged on the two mounting seats, and a bearing is arranged at the joint of the connecting shafts and the mounting seats; one ends of the connecting shafts are connected through a transmission structure and keep synchronous rotation. Adopt the utility model discloses, be equipped with many connecting axles between two mount pads, the connecting axle carries out synchronous rotation through transmission structure, effectively simulates antifriction bearing multiclass fault signal with superimposed situation of phase, and the signal of bearing acquires through collection system, and the synchronism of the bearing fault signal that this kind of structure can guarantee to acquire through collection system can be used to study the problem of multiple antifriction bearing combination stack fault simulation, and the practicality is strong, easy dismounting, and it is convenient to maintain.

Description

Parallel bearing combination fault simulation experiment device

Technical Field

The utility model relates to a bearing fault simulation device, especially a block bearing combination fault simulation experiment device.

Background

The rolling bearing is the most widely used part in mechanical transmission and aerospace rotating parts, is also one of the most important parts in mechanical equipment, plays a key role in ensuring the safe and reliable operation of the mechanical equipment, consists of an inner ring, a rolling body, a retainer and a bearing outer ring, and at present, the fault research mainly focuses on the diagnosis and analysis of single faults of the bearing, such as only the research on the faults of the inner ring, the faults of the outer ring or the faults of the rolling body of the rolling bearing; however, mechanical equipment is equipped with a plurality of types of bearings, and the bearing failure is often in a complex failure state in many cases.

The conventional bearing fault simulation device is usually a structure with a plurality of bearings arranged on a single shaft, most of the structures can only simulate a specific single fault form of the rolling bearing, the universality is poor, and the problems that the bearings are difficult to replace and cannot be suitable for combination and superposition fault simulation of a plurality of rolling bearings exist.

Disclosure of Invention

The utility model aims to provide a: aiming at the problem that a bearing fault simulation device in the prior art is single in fault simulation mode, the parallel bearing combination fault simulation experiment device capable of simulating the fault superposition condition of the rolling bearing is provided.

In order to realize the purpose of the utility model, the utility model provides a following technical scheme:

a parallel bearing combination fault simulation experiment device comprises two mounting seats which are oppositely arranged, at least two rotatable connecting shafts are arranged through the two mounting seats, and bearings are arranged at the connecting positions of the connecting shafts and the mounting seats; one ends of the connecting shafts are connected through a transmission structure and keep synchronous rotation.

According to the technical scheme, the connecting shafts are arranged between the two mounting seats and synchronously rotate through the transmission structure, the condition that multiple fault signals of the rolling bearings are superposed in the same phase is effectively simulated, the signals of the bearings are acquired through the acquisition device, the structure can ensure the synchronism of the fault signals of the bearings acquired through the acquisition device, the problem of superposition fault simulation of multiple rolling bearing combinations can be researched, and the device is high in practicability, convenient to disassemble and assemble and convenient to maintain; the transmission structure can be belt wheel transmission, chain transmission or gear transmission and the like; two epaxial bearings of same root transmission, the bearing that is close to transmission structure can be established to support the bearing, and the bearing of keeping away from transmission structure can be established to the experiment bearing, and collection system can fix on the mount pad at experiment bearing place to make things convenient for collection system to the acquisition of experiment bearing fault signal.

Furthermore, each connecting shaft is fixed with a disk-shaped centrifugal force fixing piece. During the experiment, the centrifugal force fixing pieces rotate synchronously with the connecting shafts, the disc is provided with threaded holes, and the threaded holes are provided with balance weight screws so as to simulate the misalignment of the connecting shafts or the action of centrifugal force, namely the radial direction of each connecting shaft is simulated to be acted by the radial centrifugal force through the centrifugal force fixing pieces; the synchronous rotation of the three connecting shafts realizes the effect of respectively modulating the amplitude and the phase of the multi-type fault signals of the rolling bearing, and effectively simulates the actual working condition.

Furthermore, a radial loading device is arranged below the connecting shaft, and the radial loading device can apply a vertical upward force to the connecting shaft. The radial loading device can apply radial acting force like a connecting shaft to simulate the unbalance loading action on a fault bearing.

Further, the radial loading device comprises a hydraulic cylinder, and the top of the hydraulic cylinder is provided with a pushing piece. The hydraulic cylinder drives the pushing piece to move in the vertical direction, and then the size of radial acting force applied to the connecting shaft is adjusted.

Furthermore, the pushing part is of a tile cover structure, and the radius of the inner side of the pushing part is the same as the outer diameter of the connecting shaft. The abutting and pushing piece is matched with the radius of the connecting shaft, so that the abutting and pushing piece can exert radial acting force on the connecting shaft conveniently, the connecting shaft is protected, and the damage to the connecting shaft in the experimental process is reduced.

Furthermore, the mounting seat is provided with three connecting shafts, the mounting seat is also provided with a signal acquisition sensor, and the distance between the signal acquisition sensor and each connecting shaft is equal. The distance between the signal acquisition sensor and the connecting shaft is equal, namely the distance between the signal acquisition sensor and the bearing on the connecting shaft is equal, so that a transmission path with the same distance is formed between a bearing fault signal and the sensor, the signal can be in phase synchronization in the transmission process, and the synchronous combination simulation experiment work of multiple types of faults of the rolling bearing is realized.

Further, the mounting seats are fixed on the base in a transversely movable mode. The distance between the position of conveniently adjusting the mount pad and the mount pad, and then adjust the distance between the bearing on same connecting axle.

Furthermore, two dovetail grooves are transversely arranged on the base; the bottom of the mounting seat is fixed with a sliding block which is clamped into the dovetail groove through the sliding block, and the sliding block is provided with a threaded hole. The slider is fixed in the mount pad bottom and blocks into the dovetail for the mount pad can move and adjusting position along the trend of dovetail, and the screw can wear to establish in the threaded hole that is equipped with on the slider, supports tight dovetail slot bottom through screwing up the screw, makes slider and dovetail upside support tightly, and then the position of fixed mounting seat on the base.

Furthermore, two mounting holes are formed in the mounting seat beside each bearing, an installation shaft is axially fixed in each mounting hole, the other ends of the two installation shafts are fixed on a mounting disc, and a pushing rod which can move axially is further arranged on the mounting disc and used for ejecting the bearing. The structure for assisting the bearing disassembly is fixed through the mounting hole, and the bearing is ejected out through the axial movement of the push rod.

Furthermore, a pushing piece is rotatably fixed at one end of the pushing rod facing the bearing, and the pushing piece is in a half ring shape. The end part of the pushing rod is fixed with a pushing piece, and the pushing piece is contacted with the bearing, so that the bearing is pushed out of the mounting seat, the structure is simple, and the operation is convenient; the pushing piece is annular, so that the contact area of the pushing piece and the bearing is increased, and the damage of the bearing in the dismounting process is reduced.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that: the connecting shafts are arranged between the two mounting seats and synchronously rotate through the transmission structure, the condition that multiple fault signals of the rolling bearings are superposed in the same phase is effectively simulated, the signals of the bearings are acquired through the acquisition device, the structure can ensure the synchronism of the fault signals of the bearings acquired through the acquisition device, the structure can be used for researching the problem of the superposition fault simulation of the combination of the multiple rolling bearings, and the device is high in practicability, convenient to assemble and disassemble and convenient to maintain; the transmission structure can be belt wheel transmission, chain transmission or gear transmission and the like; two epaxial bearings of same root transmission, the bearing that is close to transmission structure can be established to support the bearing, and the bearing of keeping away from transmission structure can be established to the experiment bearing, and collection system can fix on the mount pad at experiment bearing place to make things convenient for collection system to the acquisition of experiment bearing fault signal.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows the structure diagram of the parallel bearing combination fault simulation experiment device of the present invention.

Fig. 2 shows an enlarged detail at a in fig. 1.

Fig. 3 shows a side view of the base of fig. 1.

Fig. 4 shows a principle view of the dismounting of the bearing in fig. 1.

Wherein the figures include the following reference numerals:

1, mounting a base; 11 mounting holes; 12 installing a shaft; 13 mounting a disc; 14, pushing the push rod; 15 a pushing part; 2 connecting the shaft; 3, a bearing; 4, a centrifugal force fastener; 5, a hydraulic cylinder; 6, pushing the part; 7, a signal acquisition sensor; 8, a base; 81 dovetail grooves; 82 oil grooves; 9 sliding blocks.

Detailed Description

It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1 and 2, a parallel bearing combination fault simulation experiment device comprises two mounting seats 1 which are oppositely arranged, at least two rotatable connecting shafts 2 are arranged through the two mounting seats 1, and a bearing 3 is arranged at the joint of the connecting shaft 2 and the mounting seats 1; one ends of the connecting shafts 2 are connected through a transmission structure and keep synchronous rotation.

Preferably, each connecting shaft 2 is fixed with a disk-shaped centrifugal force fixing piece 4.

Preferably, a radial loading device is arranged below the connecting shaft 2, and the radial loading device can apply a vertical upward force to the connecting shaft 2.

Preferably, the radial loading device comprises a hydraulic cylinder 5, and the top of the hydraulic cylinder 5 is provided with a pushing piece 6.

Preferably, the pushing part 6 is of a tile cover structure, and the radius of the inner side of the pushing part 6 is the same as the outer diameter of the connecting shaft 2.

Preferably, the mounting base 1 is provided with three connecting shafts 2, the mounting base 1 is further provided with a signal acquisition sensor 7, and the distance between the signal acquisition sensor 7 and each connecting shaft 2 is equal.

Preferably, the mounting bases 1 are each fixed to the base 8 so as to be laterally displaceable.

As shown in fig. 3, preferably, two dovetail grooves 81 are transversely formed on the base 8; the bottom of the mounting seat 1 is fixed with a sliding block 9 and clamped into the dovetail groove 81 through the sliding block 9, and the sliding block 9 is provided with a threaded hole. An oil groove 82 is further arranged on the base 8, and the oil groove 82 is located between the two dovetail grooves 81 and is used for receiving lubricating oil in the bearing.

As shown in fig. 4, preferably, two mounting holes are formed in the mounting base 1 beside each bearing 3, a mounting shaft 12 is axially fixed in each mounting hole 11, the other ends of the two mounting shafts 12 are fixed on a mounting disc 13, an axially movable pushing rod 14 is further arranged on the mounting disc 13, and the pushing rod 14 is used for pushing out the bearing 3.

As shown in fig. 4, preferably, a pushing member 15 is rotatably fixed to one end of the pushing rod 14 facing the bearing 3, and the pushing member 15 is in a half ring shape.

The transmission structure of the embodiment specifically adopts synchronous belt transmission; high-precision gear transmission can also be adopted, in order to ensure that the rotation directions of the connecting shafts 2 are the same, the parameters of the gears on the two connecting shafts 2 which are in transmission connection are the same, and an intermediate idler wheel is arranged between the two gears for transition; obviously, the transmission structure of the embodiment can also adopt chain transmission.

The scope of the present invention is defined not by the above-described embodiments but by the appended claims and equivalents thereof.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A parallel bearing combination fault simulation experiment device is characterized by comprising two mounting seats (1) which are oppositely arranged, wherein at least two rotatable connecting shafts (2) are arranged through the two mounting seats (1), and bearings (3) are arranged at the connecting positions of the connecting shafts (2) and the mounting seats (1); one ends of the connecting shafts (2) are connected through a transmission structure and keep synchronous rotation.

2. The parallel bearing combination fault simulation experiment device according to claim 1, wherein each connecting shaft (2) is fixed with a disc-shaped centrifugal force fixing piece (4).

3. The parallel bearing combination fault simulation experiment device according to claim 1, characterized in that a radial loading device is arranged below the connecting shaft (2), and the radial loading device can apply a vertically upward force to the connecting shaft (2).

4. The parallel bearing combination fault simulation experiment device according to claim 3, wherein the radial loading device comprises a hydraulic cylinder (5), and a pushing piece (6) is arranged at the top of the hydraulic cylinder (5).

5. The parallel bearing combination fault simulation experiment device according to claim 4, wherein the pushing part (6) is of a tile cover structure, and the radius of the inner side of the pushing part (6) is the same as the outer diameter of the connecting shaft (2).

6. The parallel bearing combination fault simulation experiment device according to claim 1, wherein three connecting shafts (2) are arranged on the mounting seat (1), a signal acquisition sensor (7) is further arranged on the mounting seat (1), and the distance between the signal acquisition sensor (7) and each connecting shaft (2) is equal.

7. Parallel bearing combination fault simulation test device according to claim 1, characterized in that the mounting seats (1) are each fixed on a base (8) laterally movably.

8. The experiment device for simulating the combined fault of the side-by-side bearing according to claim 7, wherein two dovetail grooves (81) are transversely arranged on the base (8); a sliding block (9) is fixed at the bottom of the mounting seat (1) and clamped into the dovetail groove (81) through the sliding block (9), and a threaded hole is formed in the sliding block (9).

9. The experiment device for simulating the combined fault of the parallel bearings according to claim 1, wherein the mounting seat (1) is provided with two mounting holes beside each bearing (3), each mounting hole (11) is axially fixed with a mounting shaft (12), the other ends of the two mounting shafts (12) are fixed on a mounting disc (13), the mounting disc (13) is further provided with an axially movable pushing rod (14), and the pushing rod (14) is used for pushing out the bearings (3).

10. The parallel bearing combination fault simulation experiment device according to claim 9, wherein an abutting piece (15) is rotatably fixed at one end of the abutting rod (14) facing the bearing (3), and the abutting piece (15) is in a half ring shape.