CN211178973U

CN211178973U - Main shaft bearing triaxial high frequency vibrations detection subassembly

Info

Publication number: CN211178973U
Application number: CN201921825814.3U
Authority: CN
Inventors: 郑懿焜; 郑蕾婷; 郑子勋
Original assignee: Zhejiang Ute Bearing Co ltd
Current assignee: Zhejiang Ute Bearing Co ltd
Priority date: 2019-10-28
Filing date: 2019-10-28
Publication date: 2020-08-04
Anticipated expiration: 2029-10-28

Abstract

The utility model provides a main shaft bearing triaxial high frequency vibrations determine module belongs to bearing main shaft operating mode and detects technical field. It includes the spindle attachment, the spindle attachment on three high frequency unipolar acceleration gage subassembly of fixedly connected with, three high frequency unipolar acceleration gage subassembly correspond with X, Y and Z axle direction respectively. The utility model discloses can realize the triaxial high frequency detection.

Description

Main shaft bearing triaxial high frequency vibrations detection subassembly

Technical Field

The utility model belongs to the technical field of bearing main shaft operating mode detects, a main shaft bearing triaxial high frequency vibrations determine module is related to.

Background

The conventional acceleration gauge is an electronic component for measuring vibration frequency, and the acceleration gauge is divided into a single-axis acceleration gauge, a double-axis acceleration gauge and a three-axis acceleration gauge, wherein the vibration in X, Y and Z three-coordinate directions is usually detected in the bearing spindle working condition test, so the three-axis acceleration gauge is selected as the preferred acceleration gauge.

The detection frequency of a commercially available triaxial acceleration gauge is usually between 500-1600Hz, the selling price is about 70 coins, when the linear speed of the bearing meets a limit critical point in the working process of the main shaft and the bearing, an instant high frequency is generated, the high frequency is usually higher than 5000Hz and even close to 10000Hz, the critical point is the upper limit of the speed which can be borne by the bearing, and the upper limit cannot be detected by the triaxial acceleration gauge, so that important detection data is lost in the working condition detection.

In a commercially available product, an accelerometer capable of detecting high-frequency vibration, namely a PCB piezoelectric accelerometer, can detect 10000Hz triaxial vibration, is sold at about 30000 coins, is 400 times of the price of a common triaxial accelerometer, is obviously expensive for spindle vibration detection, and cannot be borne by users.

A commercially available uniaxial accelerometer, i.e., a semiconductor wafer accelerometer, can detect 10000Hz vibration in one direction, which is about 1700 coins, and has a disadvantage in that only one direction of high frequency vibration can be detected. The vibration detection of the main shaft needs to be carried out in Z, Y, Z three directions to obtain complete data, so that Z, Y, Z axes are respectively detected by using three single-axis accelerometers to obtain three-axis detection data, but in the detection, the detection surface of each accelerometer needs to be perpendicular to the axial direction of the seismic source, namely the accelerometer needs to be reliably fixed on a detection part, and the stable direction of the accelerometer and the seismic source needs to be maintained. Because the accelerating gauge needs to be connected with a circuit board and a data wire, the accelerating gauge is fixed with the detection part through fasteners such as screws, looseness of the fixed position can be obviously caused, and deviation can also occur in detection data of the accelerating gauge.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem, a main shaft bearing triaxial high frequency vibrations determine module is provided.

In order to achieve the above purpose, the utility model adopts the following technical proposal:

the utility model provides a main shaft bearing triaxial high frequency vibrations determine module, includes the spindle attachment spare, the spindle attachment spare on three high frequency unipolar of fixedly connected with rule subassembly with higher speed, three high frequency unipolar with higher speed rule subassembly correspond with X, Y and Z axle direction respectively.

In above-mentioned main shaft bearing triaxial high frequency vibrations determine module, high frequency unipolar with higher speed rule subassembly including fixing encapsulation casing and the circuit board on the main shaft connecting piece, the circuit board on fixedly connected with high frequency unipolar with higher speed rule, still be connected with the terminal No. one on the circuit board, be connected with on the terminal No. one and match suitable No. two terminals with a terminal, wherein, circuit board and high frequency unipolar with higher speed rule wholly lie in encapsulation casing inside and with encapsulation casing fixed connection, a terminal bottom is fixed inside the encapsulation casing, the wiring end of a terminal extends outside the encapsulation casing and is connected with No. two terminal electricity.

In above-mentioned main shaft bearing triaxial high frequency vibrations determine module, the encapsulation casing be the rectangular column type, the plane that the high frequency unipolar acceleration gauge was located is parallel with one of them surface of encapsulation casing respectively, and the plane mutually perpendicular that three high frequency unipolar acceleration gauge was located.

In the triaxial high-frequency vibration detection assembly for the spindle bearing, a wiring groove is formed in the packaging shell, the top of the first wiring terminal is communicated with the wiring groove, the second wiring terminal is located in the wiring groove and connected with the first wiring terminal, a wiring groove is formed in the spindle connecting piece, and when the packaging shell is fixed on the spindle connecting piece, the wiring groove corresponds to the wiring groove in position.

In the spindle bearing triaxial high-frequency vibration detection assembly, the plane where the winding displacement groove is located is perpendicular to the plane where the high-frequency uniaxial acceleration gauge is located.

In the spindle bearing triaxial high-frequency vibration detection assembly, two ends of the wire arranging groove penetrate through two opposite surfaces of the packaging shell, the wire arranging groove is annular, and a wire outlet is further formed in the wire arranging groove.

In the three-shaft high-frequency vibration detection assembly for the spindle bearing, the spindle connecting piece is provided with three connecting piece accommodating cavities with uniform intervals, a high-frequency single-shaft acceleration gauge assembly is fixedly connected in each connecting piece accommodating cavity, and a temperature detection integrated module is further arranged on the spindle connecting piece.

In the three-axis high-frequency vibration detection assembly for the main shaft bearing, the temperature detection integrated module comprises an infrared thermometer and a contact thermometer which are fixedly connected with the main shaft connecting piece.

In the three-shaft high-frequency vibration detection assembly for the main shaft bearing, the three high-frequency single-shaft acceleration gauge assemblies and the temperature detection integrated module are uniformly distributed on the main shaft connecting piece at intervals.

In the triaxial high-frequency vibration detection assembly of the main shaft bearing, the packaging shell is made of epoxy resin, and the packaging shell is solid, so that the packaging shell is internally in close contact with the surface of the circuit board and the high-frequency uniaxial acceleration gauge.

Compared with the prior art, the utility model has the advantages of:

1. three-axis high-frequency detection can be realized.

2. The acceleration gauge is packaged and fixed through the packaging shell, so that the acceleration gauge is convenient to mount and can keep a stable direction with a seismic source, and therefore the detection data are guaranteed not to deviate.

3. The design of winding displacement groove makes the rule of accelerating conveniently be connected with external equipment, and does not influence the mounted position of encapsulation casing, further makes the position stability of rule of accelerating.

4. The packaging shell is a cuboid, the plane of the acceleration gauge is parallel to one surface of the packaging shell, the direction between the acceleration gauge and the seismic source is convenient to adjust, and three-coordinate installation is also convenient to perform, so that the effect of three-axis vibration detection is achieved by using the single-axis acceleration gauge.

5. Compare in current PCB piezoelectric type acceleration gauge, the cost of this application is showing and is reducing, and can be used to the high frequency and detect.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

FIG. 1 is a schematic diagram of a high frequency uniaxial accelerometer assembly.

Fig. 2 is a schematic view in another direction of fig. 1.

FIG. 3 is a schematic view of the high frequency uniaxial accelerometer assembly with the package housing removed.

Fig. 4 is a schematic view in another direction of fig. 3.

Fig. 5 is a schematic diagram of the internal structure of the high-frequency uniaxial accelerometer assembly.

Fig. 6 is a schematic structural diagram of the present invention.

Fig. 7 is a schematic view of the internal structure of the present invention.

In the figure: the high-frequency single-shaft acceleration gauge comprises a main shaft connecting piece 1, a high-frequency single-shaft acceleration gauge component 2, a packaging shell 3, a circuit board 4, a high-frequency single-shaft acceleration gauge 5, a first wiring terminal 6, a second wiring terminal 7, a wire arranging groove 8, a wiring groove 9, a wire outlet 10, a temperature detection integrated module 11, an infrared thermometer 12 and a contact thermometer 13.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 6-7, a main shaft bearing three-axis high-frequency vibration detection assembly includes a main shaft connector 1, where the main shaft connector 1 may be a front end cover, a rear end cover, or a shaft sleeve, and the like, and the main shaft connector 1 is not limited herein, and three high-frequency single-axis acceleration gauge assemblies 2 are fixedly connected to the main shaft connector 1, and the three high-frequency single-axis acceleration gauge assemblies 2 respectively correspond to X, Y and the Z-axis direction.

The X, Y and Z-axis directions refer to three high-frequency single-axis accelerometer assemblies 2 corresponding to the sources X, Y and Z-axis directions, and can detect three-axis vibration. Those skilled in the art should know that, when selecting the type, the high-frequency single-axis accelerometer assembly 2 selects a product with a higher frequency amplitude, i.e. an accelerometer capable of detecting a high frequency, in this embodiment, the upper limit of the vibration frequency detection of the high-frequency single-axis accelerometer assembly 2 is at least 10000Hz, so that three-axis high-frequency detection can be achieved. Compared with the existing triaxial accelerometer which can only detect the vibration of 500-1600Hz, the vibration accelerometer has great improvement.

High frequency unipolar is with higher speed rule subassembly 2 can be solitary high frequency unipolar and is with higher speed the rule, direct fixed mounting is on main shaft connecting piece 1, three high frequency unipolar is with higher speed rule mutually perpendicular, can realize that the triaxial high frequency detects, it is perpendicular relatively difficult nevertheless to adjust three face when installing like this, the debugging time is longer, and direct mount can lead to high frequency unipolar to accelerate and produce between rule and the main shaft connecting piece 1 becoming flexible, high frequency unipolar is with higher speed the rule and exposes externally, also takes place electrical components and parts easily and damages.

In this embodiment, as a preferred scheme, as shown in fig. 1-5, the high-frequency uniaxial acceleration gauge assembly 2 includes an encapsulation casing 3 and a circuit board 4 fixed on the spindle connector 1, the circuit board 4 on fixedly connected with high-frequency uniaxial acceleration gauge 5, the circuit board 4 on still be connected with a terminal 6, be connected with No. two terminals 7 matched with a terminal 6 on the terminal 6, wherein, the circuit board 4 and the high-frequency uniaxial acceleration gauge 5 are wholly located inside the encapsulation casing 3 and fixedly connected with the encapsulation casing 3, No. 6 bottom of the terminal is fixed inside the encapsulation casing 3, the terminal of a terminal 6 extends outside the encapsulation casing 3 and is electrically connected with No. two terminals 7.

The first binding post 6 can be a socket or a plug, the second binding post 7 can be a plug or a socket, and preferably, the first binding post 6 is a socket, and the second binding post 7 is a plug.

The packaging shell 3 is in a rectangular column shape, the plane where the high-frequency single-axis acceleration gauge 5 is located is parallel to one of the surfaces of the packaging shell 3, and the planes where the three high-frequency single-axis acceleration gauges 5 are located are perpendicular to each other. Preferably, the package housing 3 is of a cubic column type.

The packaging shell 3 can be made of plastic or metal, and the circuit board 4, the high-frequency single-axis accelerometer 5 and the first binding post 6 are packaged in the packaging shell 3 and fixedly connected with the packaging shell 3, so that the positions of the circuit board, the high-frequency single-axis accelerometer and the first binding post are kept fixed. But because plastics or metal casing and circuit board 4, high frequency unipolar acceleration rule 5 and a terminal 6 between can have the clearance, in the bearing main shaft use, lead to circuit board 4, high frequency unipolar acceleration rule 5 and terminal 6 to take place to rock, the deviation can appear in the testing result. In order to overcome this technical problem, in this embodiment, as shown in fig. 5, the material of the package housing 3 is epoxy resin, and the package housing 3 is wrapped outside the high-frequency uniaxial acceleration gauge 5, the circuit board 4 and the first terminal 6 and tightly attached to the high-frequency uniaxial acceleration gauge 5, the circuit board 4 and the first terminal 6, so that the bottoms of the high-frequency uniaxial acceleration gauge 5, the circuit board 4 and the first terminal 6 are fixedly connected to the package housing 3, and the positions of the high-frequency uniaxial acceleration gauge, the circuit board 4 and the first terminal 6 in the.

As described above, the material of the package case 3 is epoxy resin, and the package case is solid, so that the inside of the package case is in close contact with the surfaces of the circuit board 4 and the high-frequency uniaxial acceleration gauge 5. During specific packaging, a shell mold of the packaging shell 3 is manufactured firstly, the circuit board 4, the high-frequency single-shaft acceleration gauge 5 and the first wiring terminal 6 are connected and then placed into the shell mold, epoxy resin is injected, and demolding is carried out after cooling to obtain the packaging shell 3.

In this embodiment, an external wiring problem is also solved, as shown in fig. 1, a wiring groove 8 is disposed on the package housing 3, the top of the first terminal 6 is communicated with the wiring groove 8, the second terminal 7 is located in the wiring groove 8 and connected to the first terminal 6, a wiring groove 9 is disposed on the spindle connecting member 1, and when the package housing 3 is fixed on the spindle connecting member 1, the wiring groove 9 corresponds to the wiring groove 8.

When the wiring device is used, the data line is connected with the second wiring terminal 7, is wired along the wiring groove 8 and is embedded into the wiring groove 8, and the wiring is completely arranged in the wiring groove 8, so that wiring is facilitated.

The plane of the wiring groove 8 is vertical to the plane of the high-frequency uniaxial acceleration gauge 5. Because a terminal 6 and high frequency unipolar are with higher speed rule 5 and circuit board 4 and are electric to be connected, the plane that high frequency unipolar is with higher speed rule 5 and is located is parallel with the plane that circuit board 4 was located, and when terminal 6 set up with circuit board 4 is perpendicular, more easy to assemble is connected, and winding displacement groove 8 was perpendicular with the circuit board this moment, then makes things convenient for terminal 6 to be connected with winding displacement groove 8.

Two opposite surfaces of the packaging shell 3 are penetrated through two ends of the wire arranging groove 8, wires can be passed from two ends during wire arranging, and the wire arranging groove facilitates interconnection among a plurality of different accelerating gauge assemblies. Wiring groove 9 is the annular, and the data line can be located in the wiring groove, is convenient for connect different No. two terminals, still is equipped with a outlet 10 on wiring groove 9, and this outlet 10 is imported and exported for data line and external connection.

Be equipped with three connecting piece holding chamber that the interval is even on the main shaft connecting piece 1, high frequency unipolar acceleration gauge subassembly 2 of every connecting piece holding intracavity fixedly connected with still is equipped with a temperature detection integrated module 11 on main shaft connecting piece 1. Because encapsulation casing 3 is the rectangular column shape, the preferred rectangular column shape that also is in connecting piece holding chamber, just so made things convenient for the installation of encapsulation casing 3, be convenient for adjust mutually perpendicular between the three high frequency unipolar acceleration gauge 5.

The temperature detection integrated module 11 comprises an infrared thermometer 12 and a contact thermometer 13 which are fixedly connected with the spindle connecting piece 1. The infrared thermometer 12 and the contact thermometer 13 may be commercially available products, and will not be described in detail.

Three high-frequency single-shaft acceleration gauge assemblies 2 and a temperature detection integrated module 11 are uniformly distributed at intervals on the main shaft connecting piece 1. That is, set up 4 holding chambeies, install three high frequency unipolar acceleration gauge subassembly 2 and a temperature detection collection moulding piece 11 respectively, the circumference along main shaft connecting piece 1 that the mutual interval is even between 4 holding chambeies respectively, and the contained angle between per two adjacent holding chambeies is 90.

The utility model discloses a theory of operation is: with encapsulation casing 3 fixed mounting on main shaft connecting piece 1, the direction of adjustment encapsulation casing 3, make high frequency unipolar accelerate the plane that rule 5 is located and the axial of the vibration source of the main shaft that needs to detect perpendicular can, three high frequency unipolar accelerate rule 5 corresponds X, Y and the Z axle direction of main shaft respectively to realize the triaxial high frequency and detect.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms of the spindle attachment 1, the high-frequency uniaxial acceleration gauge assembly 2, the package housing 3, the circuit board 4, the high-frequency uniaxial acceleration gauge 5, the first terminal 6, the second terminal 7, the bus bar groove 8, the wiring groove 9, the outlet 10, the temperature detection integrated module 11, the infrared thermometer 12, the contact thermometer 13, and the like are used more frequently herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention and should not be interpreted as imposing any additional limitations that are contrary to the spirit of the present invention.

Claims

1. The utility model provides a main shaft bearing triaxial high frequency vibrations determine module, includes main shaft connecting piece (1), its characterized in that, main shaft connecting piece (1) on three high frequency unipolar acceleration gage subassembly (2) of fixedly connected with, three high frequency unipolar acceleration gage subassembly (2) correspond with X, Y and Z axle direction respectively.

2. The spindle bearing triaxial high frequency vibration sensing assembly of claim 1, the high-frequency uniaxial accelerometer component (2) comprises a packaging shell (3) and a circuit board (4) which are fixed on the main shaft connecting piece (1), the circuit board (4) is fixedly connected with a high-frequency single-shaft acceleration gauge (5), the circuit board (4) is also connected with a first binding post (6), the first binding post (6) is connected with a second binding post (7) matched with the first binding post (6), wherein, circuit board (4) and high frequency unipolar acceleration gauge (5) are wholly located encapsulation casing (3) inside and with encapsulation casing (3) fixed connection, terminal (6) bottom is fixed inside encapsulation casing (3), the wiring end of terminal (6) extend outside encapsulation casing (3) and be connected with No. two terminal (7) electricity.

3. The three-axis high-frequency vibration detection assembly for the spindle bearing according to claim 2, wherein the package housing (3) is rectangular prism-shaped, the planes of the high-frequency uniaxial acceleration gauges (5) are parallel to one of the surfaces of the package housing (3), and the planes of the three high-frequency uniaxial acceleration gauges (5) are perpendicular to each other.

4. The main shaft bearing triaxial high-frequency vibration detection assembly of claim 2, characterized in that, a wiring groove (8) is provided on the package housing (3), the top of the first terminal (6) is communicated with the wiring groove (8), the second terminal (7) is located in the wiring groove (8) and connected with the first terminal (6), a wiring groove (9) is provided on the main shaft connecting member (1), when the package housing (3) is fixed on the main shaft connecting member (1), the wiring groove (9) corresponds to the wiring groove (8).

5. The main shaft bearing triaxial high frequency vibration detecting assembly according to claim 4, wherein the cable arrangement groove (8) is located on a plane perpendicular to a plane on which the high frequency uniaxial acceleration gauge (5) is located.

6. The main shaft bearing triaxial high frequency vibration detection assembly of claim 4, wherein the two ends of the wiring groove (8) penetrate through two opposite surfaces of the packaging housing (3), the wiring groove (9) is annular, and an outlet (10) is further disposed on the wiring groove (9).

7. The main shaft bearing triaxial high-frequency vibration detection assembly according to claim 1, wherein the main shaft connecting member (1) is provided with three connecting member accommodating cavities with uniform intervals, each connecting member accommodating cavity is fixedly connected with a high-frequency single-axis accelerometer assembly (2), and the main shaft connecting member (1) is further provided with a temperature detection integrated module (11).

8. The assembly for detecting high-frequency vibration of a spindle bearing in three axes according to claim 7, wherein the temperature detection integrated module (11) comprises an infrared thermometer (12) and a contact thermometer (13) which are fixedly connected with the spindle connecting piece (1).

9. The three-axis high-frequency vibration detection assembly of the main shaft bearing according to claim 7, wherein the three high-frequency single-axis accelerometer assemblies (2) and the temperature detection integration module (11) are uniformly distributed at intervals on the main shaft connecting piece (1).

10. The assembly according to claim 2, wherein the packaging housing (3) is made of epoxy resin, and the packaging housing is solid, so that the interior of the packaging housing is in close contact with the surface of the circuit board (4) and the surface of the high-frequency uniaxial acceleration gauge (5).