CN209945721U

CN209945721U - Fault monitoring equipment of precision bearing

Info

Publication number: CN209945721U
Application number: CN201821931215.5U
Authority: CN
Inventors: 徐良泉
Original assignee: Shangrao Haitai Seiko Machinery Co Ltd
Current assignee: Shangrao Haitai Seiko Machinery Co Ltd
Priority date: 2018-11-22
Filing date: 2018-11-22
Publication date: 2020-01-14
Anticipated expiration: 2028-11-22

Abstract

The utility model relates to a fault monitoring equipment of precision bearing. Under the conditions of high-speed rotation and heavy load, the bearing can slightly deflect, so that the inner ring and the outer ring of the bearing can relatively move, the structure of the bearing can be damaged, and the main shaft can be damaged. The utility model relates to a fault monitoring equipment of precision bearing, wherein: the driving shaft is fixedly connected with the driven shaft through a coupler, the bearing seat is fixedly connected with the bearing, a vibration acceleration sensor is fixedly arranged on one side of the fixed end cover, a displacement sensor is fixedly arranged on one side of the bearing seat, an analog-to-digital conversion module is fixedly arranged in the test bed, and the vibration acceleration sensor and the displacement sensor are respectively electrically connected with the signal conditioner, the analog-to-digital conversion module and the controller to form a fault monitoring loop. The device has the advantages that: utilize hall sensor to gather, the accuracy is high, adopts the singlechip as the master control unit, is convenient for gather and control bearing fault state.

Description

Fault monitoring equipment of precision bearing

Technical Field

The utility model belongs to the technical field of the bearing detection device technique and specifically relates to a fault monitoring equipment of precision bearing.

Background

With the continuous development of economy, the development speed of mechanical equipment is very fast, and the mechanical equipment is used very frequently, mainly through the structural use of a bearing, the damage of the mechanical equipment in the use process can be reduced to the minimum, the safety in the work is greatly ensured, and the service life of the mechanical equipment can be prolonged; under the condition that the bearing rotates at a high speed and has heavy load weight, slight deflection often occurs during rotation, so that slight relative movement occurs between an inner ring and an outer ring of the bearing, although the slight deflection phenomenon is not easy to be perceived by naked eyes, after long-time operation, the structure of the bearing can be damaged by being incapable of being recovered, the deflection of the main shaft is aggravated, and finally, the machining position of a machine tool is deflected, or even the main shaft is damaged.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model aims at overcoming the not enough of prior art, the utility model provides a precision bearing's fault monitoring equipment solves precision bearing fault detection problem.

(II) technical scheme

The technical scheme of the utility model: a fault monitoring device of a precision bearing comprises a test bed, a workbench, a motor base, a motor, a transmission, a coupling, a driven shaft, a bearing seat, a bearing, a fixed end cover, a vibration acceleration sensor, a displacement sensor, a protective outer cover, a signal conditioner, an analog-to-digital conversion module and a controller; wherein: the test bench is fixedly connected with the workbench, the upper surface of the workbench is fixedly connected with the motor through a motor base, the motor is fixedly connected with the transmission, the driving shaft is fixedly connected with the driven shaft through a coupler, the upper surface of the workbench is fixedly provided with a bearing seat, the bearing seat is fixedly connected with the bearing, one side of the bearing is fixedly connected with a fixed end cover, one side of the fixed end cover is fixedly provided with a vibration acceleration sensor, one side of the bearing seat is fixedly provided with a displacement sensor, the upper surface of the workbench is fixedly provided with a protective outer cover, a signal conditioner is fixedly arranged in the test bench, an analog-to-digital conversion module is fixedly arranged in the test bench, a controller is fixedly arranged in the test bench, the vibration acceleration sensor and the displacement sensor are respectively connected with the signal.

A fault monitoring apparatus for a precision bearing, wherein: the bottom of the motor base is fixedly provided with a damping pad.

A fault monitoring apparatus for a precision bearing, wherein: the number of the vibration acceleration sensors is three, and the type is YD-1.

A fault monitoring apparatus for a precision bearing, wherein: the displacement sensor adopts a Hall sensor.

A fault monitoring apparatus for a precision bearing, wherein: the signal conditioner is internally provided with a filter circuit.

A fault monitoring apparatus for a precision bearing, wherein: the analog-to-digital conversion module is GY-ADS 1015.

A fault monitoring apparatus for a precision bearing, wherein: the controller master unit model is STC90C 52.

(III) advantageous effects

The utility model has the advantages that: utilize hall sensor to gather, the accuracy is high, adopts the singlechip as the master control unit, and the high performance is convenient for gather and control bearing fault state, and the device is simple, and the practicality is strong.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Reference numerals: the device comprises a test bed 1, a workbench 2, a motor base 3, a motor 4, a transmission 5, a coupling 6, a driven shaft 7, a bearing seat 8, a bearing 9, a fixed end cover 10, a vibration acceleration sensor 11, a displacement sensor 12, a protective outer cover 13, a signal conditioner 14, an analog-to-digital conversion module 15 and a controller 16.

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.

Embodiment 1, please refer to fig. 1, a fault monitoring device of a precision bearing includes a test bench 1, a workbench 2, a motor base 3, a motor 4, a transmission 5, a coupling 6, a driven shaft 7, a bearing seat 8, a bearing 9, a fixed end cover 10, a vibration acceleration sensor 11, a displacement sensor 12, a protective outer cover 13, a signal conditioner 14, an analog-to-digital conversion module 15, and a controller 16; wherein: the test bed 1 is fixedly connected with the workbench 2, the upper surface of the workbench 2 is fixedly connected with a motor 4 through a motor base 3, the motor 4 is fixedly connected with a speed changer 5, a driving shaft is fixedly connected with a driven shaft 7 through a coupler 6, the upper surface of the workbench 2 is fixedly provided with a bearing seat 8, the bearing seat 8 is fixedly connected with a bearing 9, one side of the bearing 9 is fixedly connected with a fixed end cover 10, one side of the fixed end cover 10 is fixedly provided with a vibration acceleration sensor 11, one side of the bearing seat 8 is fixedly provided with a displacement sensor 12, the upper surface of the workbench 2 is fixedly provided with a protective outer cover 13, the test bed 1 is internally and fixedly provided with a signal conditioner 14, the test bed 1 is internally and fixedly provided with an analog-digital conversion module 15, the test bed 1 is internally and fixedly provided with a controller 16, the analog-to-digital conversion module 15 and the controller 16 are electrically connected to form a fault monitoring loop.

Embodiment 2, please refer to fig. 1, a fault monitoring apparatus for a precision bearing, wherein: the bottom of the motor base 3 is fixedly provided with a vibration damping pad for vibration isolation and sound insulation. The rest is the same as example 1.

Embodiment 3, please refer to fig. 1, a fault monitoring apparatus for a precision bearing, wherein: the three vibration acceleration sensors 11 are provided, the models are YD-1, and the vibration frequency is convenient to test. The rest is the same as example 1.

Embodiment 4, please refer to fig. 1, a fault monitoring apparatus for a precision bearing, wherein: the displacement sensor 12 adopts a Hall sensor, and the accuracy is high. The rest is the same as example 1.

Embodiment 5, please refer to fig. 1, a fault monitoring apparatus for a precision bearing, wherein: the signal conditioner 14 is provided with a filter circuit inside, so as to filter the ripple waves. The rest is the same as example 1.

Embodiment 6, please refer to fig. 1, a fault monitoring apparatus for a precision bearing, wherein: the analog-to-digital conversion module 15 is GY-ADS1015 in model, and is high in precision. The rest is the same as example 1.

Embodiment 7, please refer to fig. 1, a fault monitoring apparatus for a precision bearing, wherein: the controller 16 has a main control unit model STC90C52, high performance and low power consumption. The rest is the same as example 1.

The working principle is as follows:

connecting data connecting wires of the vibration acceleration sensor 11 and the displacement sensor 12 into an access port of a signal conditioner 14; the motor 4 is electrified, the vibration frequency and the eccentric value of the bearing 9 are collected through the vibration acceleration sensor 11 and the displacement sensor 12 and transmitted to the signal conditioner 14, the signal conditioner 14 carries out filtering and amplification processing on the received analog signals, the analog signals are converted into digital signals through the analog-to-digital conversion module 15 and transmitted to the controller 16, the controller 16 extracts an actual frequency spectrogram of vibration of the bearing 9 and a continuous eccentric displacement chart of rotation of the rolling bearing, and judgment is carried out according to the frequency spectrogram and the continuous eccentric displacement chart displayed by the controller 16, so that the fault state of the bearing is obtained.

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. A fault monitoring device of a precision bearing comprises a test bed (1), a workbench (2), a motor base (3), a motor (4), a transmission (5), a coupler (6), a driven shaft (7), a bearing seat (8), a bearing (9), a fixed end cover (10), a vibration acceleration sensor (11), a displacement sensor (12), a protective outer cover (13), a signal conditioner (14), an analog-to-digital conversion module (15) and a controller (16); the method is characterized in that: the test bed (1) is fixedly connected with the workbench (2), the upper surface of the workbench (2) is fixedly connected with a motor (4) through a motor base (3), the motor (4) is fixedly connected with a speed changer (5), a driving shaft is fixedly connected with a driven shaft (7) through a shaft coupling (6), a bearing seat (8) is fixedly arranged on the upper surface of the workbench (2), the bearing seat (8) is fixedly connected with a bearing (9), one side of the bearing (9) is fixedly connected with a fixed end cover (10), one side of the fixed end cover (10) is fixedly provided with a vibration acceleration sensor (11), one side of the bearing seat (8) is fixedly provided with a displacement sensor (12), the upper surface of the workbench (2) is fixedly provided with a protective outer cover (13), a signal conditioner (14) with a filter circuit is fixedly arranged in the test bed (1), an analog-digital conversion module (15) with the model of GY-ADS1015 is fixedly arranged in the test bed, the test bed (1) is internally and fixedly provided with a controller (16), the model of a main control unit of the controller (16) is STC90C52, and a vibration acceleration sensor (11) and a displacement sensor (12) are respectively and electrically connected with a signal conditioner (14), an analog-to-digital conversion module (15) and the controller (16) to form a fault monitoring loop.

2. The fault monitoring apparatus for a precision bearing according to claim 1, wherein: the bottom of the motor base (3) is fixedly provided with a damping pad.

3. The fault monitoring apparatus for a precision bearing according to claim 1, wherein: the model of the vibration acceleration sensor (11) is YD-1.

4. The fault monitoring apparatus for a precision bearing according to claim 1, wherein: the displacement sensor (12) adopts a Hall sensor.