CN205426518U - Tapered roller bearing lubricating oil film measurement simulation device - Google Patents

Abstract

The utility model relates to a tapered roller bearing lubricating oil film measurement simulation device, which comprises a main body of the measuring device. The main body of the measuring device includes an upper table of the measuring device and a lower table of the measuring device. The upper table of the measuring device is provided with a glass disk drive unit and a tapered roller drive. unit, the glass disk drive unit and the tapered roller drive unit drive the elastohydrodynamic contact pair to rotate, the tapered roller drive unit is connected to the loading unit, the fine adjustment unit and the translation unit, the contact position of the tapered roller is determined by the tapered roller positioning unit, and at the same time The elastohydrodynamic contact pair is matched with the optical measurement unit, each structure cooperates with each other, the structural position design is reasonable, the overall is simple and easy, the manufacturing cost is low, the work efficiency is improved, and the precise measurement of the lubricating oil film of the tapered roller bearing can be realized, and the practicability is strong .

Description

Lubricating oil film measurement simulation device for tapered roller bearings

technical field

The utility model belongs to the field of high secondary line contact elastodynamic oil film lubrication measurement, in particular to an experimental simulation device for lubricating oil film measurement of tapered roller bearings under different motion state conditions.

Background technique

Tapered roller bearings are widely used in various industries in the industrial field because of their remarkable advantages of bearing compound loads (both bearing radial force and axial force). In tapered roller bearings, there is a linear contact between the tapered rollers and the raceway. This contact method can distribute the load over a large area, so that the tapered roller bearing has good load carrying capacity.

At present, the numerical simulation of the lubrication state of tapered roller bearings is relatively mature. In terms of experimental research, bench experiments are mostly carried out, and the measurement of the lubricating oil film of the tapered roller contact pair lags behind the numerical analysis and applied experimental research, and the experimental data in this area is relatively scarce. The technical problems limiting this research include two aspects: the precise positioning of the tapered rollers during the measurement and the adjustment of the tapered roller generatrix in full contact with the plane. In fact, the position where the tapered roller comes into contact with its mating plane is specific. On the other hand, it is quite difficult to ensure the complete contact between the generatrix of the tapered roller and the plane.

In the existing tapered roller lubricating oil film measurement device, no solution to the above two technical problems is given, which is also an important reason for the insufficient measurement data of the tapered roller lubricating oil film. Therefore, it is necessary to overcome the technical defects in the previous measuring devices, and develop a practical experimental device to accurately measure the lubricating oil film of tapered rollers, so as to provide experimental data support for the research of tapered roller lubrication.

Contents of the invention

Aiming at the deficiencies of the existing measurement technology, the technical problem to be solved by the utility model is to provide a tapered roller bearing lubricating oil film measurement simulation device and a contact adjustment method, which can measure the lubricating oil film under the condition of accurate contact between the tapered roller and the plane. Measurement, improve the accuracy and repeatability of measurement data.

The technical scheme of the utility model: a tapered roller bearing lubricating oil film measurement simulation device, including the main body of the measuring device, the main body of the measuring device includes the upper table 1 of the measuring device and the lower table 2 of the measuring device, and the upper table 1 of the measuring device is provided with a glass disc drive The unit 3 and the tapered roller driving unit 4, the glass disk driving unit 3 and the tapered roller driving unit 4 drive the elastic-hydrodynamic contact pair to rotate, the tapered roller driving unit 4 is connected to the loading unit 5, the fine-tuning tilt unit 6 and the translation unit 7, At the same time, the elastic-hydrodynamic contact pair cooperates with the optical measurement unit 10 .

Optimally, the glass disk drive unit 3 includes a glass disk rotation unit 11, a glass disk 45 and a disk drive motor 12, the glass disk rotation unit 11 is connected with the disk drive motor 12 through a timing belt, and the disk drive motor 12 is controlled by The disk drive motor support 13 is supported, and the disk drive motor support 13 is arranged under the upper table 1 of the measuring device.

Optimally, the tapered roller drive unit 4 includes a tapered roller 8, the contact position of the tapered roller 8 is determined by the tapered roller positioning unit, and the tapered roller big end top shaft 14 at one end of the tapered roller 8 passes through the coupling 15 Connect the tapered roller driving motor 16, and the other end of the tapered roller small end top shaft 17 is installed on the fine adjustment tilting unit 6, and the mobile fine adjustment tilt unit 6 drives the tapered roller small end top shaft 17 to move and clamp the tapered roller 8.

Optimally, the fine-tuning tilting unit 6 includes a tilting top plate 19 on the tapered roller drive motor support 23, a fine-tuning screw 20 is arranged on the tilting top plate 19, and the fine-tuning screw 20 presses against the tilting plate 18, and the tilting plate 18 can be Tilting around the tilting axis 21, the tilting plate 18 is provided with a top shaft 17 at the small end of the tapered roller, and the top shaft 17 at the small end of the tapered roller presses against the tapered roller 8, and then drives the tapered roller 8 at a micro-angle under the action of the fine-tuning screw 20 tilt.

Optimally, the tilt-adjusting top plate 19 is processed with a groove 24 , and the tapered roller driving motor support 23 is processed with a protrusion 22 , and the protrusion 22 moves in the groove 24 .

Optimally, the loading unit 5 includes a differential screw drive device 25 and a hand wheel 46. The differential screw drive device 25 is composed of a differential screw rod 26, a coarse-thread nut 27, a fine-thread nut 28, a spring 29, a sensor 30, The upper buckle cover 31 and the loading cap 32 are composed, the loading cap 32 is matched with the spherical plain bearing inner shaft 33, the spherical plain bearing inner shaft 3 is matched with the spherical plain bearing inner ring 34, the spherical plain bearing inner ring 34 can rotate relative to the spherical plain bearing outer ring 35, and It includes a counterweight screw 36 arranged at the rear end of the tapered roller drive motor support 23 , and the counterweight screw 36 is matched with a counterweight 37 .

Optimally, the translation unit 7 includes a translation plate 38 on which a threaded front seat 39 is arranged, the threaded front seat 39 is connected to the translation screw 40, the other end of the translation screw 40 is connected to the threaded back seat 41, and the threaded back seat 41 is connected to the measuring device The upper table top 1 is fixedly connected.

Optimally, the tapered roller positioning unit includes a calibration disc 9, a notch 46 is provided on the calibration disc 9, and a circular arc is provided at the front end of the notch 46.

Optimally, the translation unit 7 also includes a support shaft 42, which is connected to a translation bearing 43, and the upper table 1 of the measuring device is provided with a track groove 44, and the translation bearing 43 moves in the track groove 44 of the upper table 1 of the measuring device.

A method for contact pair regulation, comprising the following steps:

(1) Determination of the contact position of the tapered roller: determine the taper angle θ of the tapered roller and the radius r2 of the small end of the tapered roller, and use the formula d=r2/sinθ to calculate the distance between the small end of the tapered roller and the center of rotation of the glass disc The distance d, select the notch position of the calibration disc;

(2) Clamping and position adjustment of the tapered roller: match the large end of the tapered roller 8 with the top shaft 14 at the large end of the tapered roller, and move the fine-tuning unit 6 so that the top shaft 17 at the small end of the tapered roller clamps the tapered roller 8, then drive the loading unit 5 to make the tapered roller 8 and the glass disc 45 initially contact, and finally drive the translation unit 7 to adjust the tapered roller 8 to the contact position;

(3) Loading of the tapered rollers: adjust the position of the counterweight 37 to zero the contact load, rotate the handwheel 46 to drive the loading unit 5, and load to the load required for the experiment;

(4) Adjustment of the contact state: Rotate the fine-tuning screw 20 to fine-tune the contact state of the tapered roller 8, first theoretically calculate the contact radius of the small end of the tapered roller 8 and the large end of the tapered roller 8 under a given uniform load, and then Adjust the fine-tuning tilting unit 6. After adjustment, compare the difference between the contact radius between the small end of the tapered roller 8 and the large end of the tapered roller 8 and the theoretical value. After repeated adjustments, the tapered roller 8 can be in a uniformly loaded state;

(5) Drive: the disk drive motor 12 and the tapered roller drive motor 16 drive the glass disc 45 rotations respectively

The spindle tapered roller 8 realizes the rotation of the glass disc 45 and the tapered roller 8;

(6) Measurement analysis: use the CCD image sensor to capture the lubrication process of the tapered roller 8, and use the image

The processing software analyzes and obtains the lubricating oil film thickness between the tapered roller 8 and the glass disc 45 .

The technical solution of the utility model comprises a main body of a measuring device, the main body of the measuring device includes an upper table of the measuring device and a lower table of the measuring device, the upper table of the measuring device is provided with a glass disk drive unit and a tapered roller drive unit, a glass disk drive unit and a cone roller The sub-drive unit drives the elastohydrodynamic contact pair to rotate, the tapered roller drive unit is connected to the loading unit, the fine-tuning tilt unit and the translation unit, the contact position of the tapered rollers is determined by the tapered roller positioning unit, and the elastohydrodynamic contact pair cooperates with the optical measurement unit , each structure cooperates with each other, the structural position design is reasonable, the whole is simple and easy to implement, the manufacturing cost is low, the work efficiency is improved, and the tapered roller bearing can realize the accurate measurement of the lubricating oil film, and the practicability is strong.

The glass disk drive unit of the utility model includes a glass disk rotary unit and a disk drive motor, the glass disk rotary unit is connected with the disk drive motor through a synchronous belt, the disk drive motor is supported by the disk drive motor support, The seat is set under the upper table of the measuring device, and the lubrication process of the contact pair can be directly observed and photographed through the glass disc. The structure design is simple and reasonable, saving space, reducing power loss, saving cost, and strong practicability.

The tapered roller driving unit described in the utility model includes a tapered roller. The top shaft of the large end of the tapered roller at one end of the tapered roller is connected to the driving motor of the tapered roller through a coupling, and the top shaft of the small end of the tapered roller at the other end is installed on the fine-tuning On the tilting unit, the mobile fine-tuning tilting unit drives the top shaft at the small end of the tapered roller to move and clamp the tapered roller. The structure design is simple and reasonable, and the practicability is strong.

The fine-tuning tilting unit described in the utility model includes the tilting top plate on the support of the tapered roller drive motor. The top shaft of the small end of the tapered roller is set on the board, and the top shaft of the small end of the tapered roller pushes the tapered roller tightly, and then the tapered roller is driven to tilt at a micro angle under the action of the fine-tuning screw. Simple and reasonable design, strong practicability.

According to the utility model, the groove is processed on the tilting top plate, and the protrusion is processed on the support of the tapered roller drive motor. The protrusion moves in the groove, and the cooperation between the protrusion and the groove is simple and easy to improve the stability of the structure. Simple and practical.

The loading unit described in the utility model includes a differential screw drive device, which is composed of a differential screw rod, a coarse thread nut, a fine thread nut, a spring, a sensor, a buckle cover and a loading cap, and the loading cap and the joint The inner shaft of the bearing is matched, the inner shaft of the joint bearing is matched with the inner ring of the joint bearing, the inner ring of the joint bearing can rotate relative to the outer ring of the joint bearing, and a counterweight screw is arranged at the rear end of the tapered roller drive motor support, and the counterweight screw and The counterweights are matched, the structure design is simple and reasonable, the structure of each part works in harmony, the stability and accuracy of the work are improved, and the practicability is strong.

The translation unit described in the utility model includes a translation plate, on which a front threaded front seat is arranged, the threaded front seat is connected with the translation screw, the other end of the translation screw is connected with the threaded back seat, the threaded back seat is fixedly connected with the upper table of the measuring device, and the translation plate adopts Thread form, smooth movement during translation, good working stability and strong practicability.

The tapered roller positioning unit of the utility model includes a calibration plate, a notch is provided on the calibration plate, and a circular arc is provided at the front end of the notch, which can realize accurate measurement of the device, improve stability, and has a simple structure and strong practicability.

The translation unit of the utility model also includes a support shaft, the support shaft is connected with the translation bearing, the upper table of the measuring device is provided with a track groove, and the translation bearing moves in the track groove of the upper table of the measuring device, the stability is good during translation, and the structural design is simple , Strong practicability.

Beneficial effect:

The tapered roller positioning unit and the fine-tuning tilting unit are used to accurately locate the contact position of the tapered roller and fine-tune the contact state, and then capture the thickness of the lubricating oil film of the tapered roller under different operating conditions, and analyze the lubrication state of the tapered roller , the method provides a precise control method of the tapered roller contact pair, the measurement data is accurate, the measurement results are highly repeatable, and it is convenient for quantitative analysis and research on the lubrication state of the tapered roller.

Description of drawings

Fig. 1 is a structural schematic diagram of a tapered roller bearing lubricating oil film measurement simulation device of the present invention;

Fig. 2 is a schematic structural diagram of a right perspective perspective view of the tapered roller drive unit of the tapered roller bearing lubricating oil film measurement simulation device of the present invention;

Fig. 3 is a schematic structural diagram of the three-dimensional view of the translation unit of the tapered roller bearing lubricating oil film measurement simulation device of the present invention;

Fig. 4 is a schematic structural diagram of a left perspective perspective view of the tapered roller drive unit of the tapered roller bearing lubricating oil film measurement simulation device of the present invention;

Fig. 5 is a schematic cross-sectional structure diagram of the loading unit of the tapered roller bearing lubricating oil film measuring and simulating device of the present invention;

Fig. 6 is a perspective view structural diagram of the glass disc rotary unit of the tapered roller bearing lubricating oil film measurement simulation device of the present invention;

Fig. 7 is a schematic structural diagram of the calibration plate of the tapered roller bearing lubricating oil film measurement simulation device of the present invention.

1-The upper table of the measuring device; 2-The lower table of the measuring device; 3-Glass disk drive unit; 4-Taper roller drive unit; 5-Loading unit; 9-calibration disc; 10-optical measuring unit; 11-glass disc rotation unit; 12-disk drive motor 1; 13-disk drive motor support; 14-tapered roller big end top shaft; 15-coupling device; 16-tapered roller drive motor; 17-tapered roller small end top shaft; 18-tilt adjustment plate; 19-tilt adjustment top plate; 20-fine-tuning screw; 21-tilt adjustment shaft; Tapered roller drive motor support; 24-groove; 25-differential screw drive device; 26-differential screw; 27-coarse thread nut; 28-fine thread nut; 29-spring; 30-sensor; 31 32-loading cap; 33-section bearing inner shaft; 34-section bearing inner ring; 35-joint bearing outer ring; 36-counterweight screw; 37-counterweight weight; 38-translation plate; 39 -Thread front seat; 40-translation screw; 41-thread rear seat; 42-support shaft; 43-translation bearing; 44-track groove; 45-glass disc; 46-notch.

detailed description

The technical solution of the utility model is: a tapered roller bearing lubricating oil film measurement simulation device, including the main body of the measuring device, the main body of the measuring device includes the upper table 1 of the measuring device and the lower table 2 of the measuring device, and the upper table 1 of the measuring device is provided with a glass disc The driving unit 3 and the tapered roller driving unit 4, the glass disk driving unit 3 and the tapered roller driving unit 4 drive the elastic-hydrodynamic contact pair to rotate, and the tapered roller driving unit 4 is connected to the loading unit 5, the fine-tuning tilt unit 6 and the translation unit 7 , while the elastic-hydrodynamic contact pair is matched with the optical measurement unit 10, the glass disk drive unit 3 includes a glass disk rotation unit 11, a glass disk 45 and a disk drive motor 12, and the glass disk rotation unit 11 is connected with the glass disk rotation unit through a timing belt The disk drive motor 12 is connected, the disk drive motor 12 is supported by the disk drive motor support 13, the disk drive motor support 13 is arranged below the upper table 1 of the measuring device, and the tapered roller driving unit 4 includes a tapered roller 8, a tapered roller The contact position of the roller 8 is determined by the positioning unit of the tapered roller. The top shaft 14 at the large end of the tapered roller 8 at one end of the tapered roller 8 is connected to the driving motor 16 of the tapered roller through a coupling 15, and the top shaft 17 at the small end of the tapered roller at the other end is installed On the fine-adjustment tilting unit 6, the mobile fine-tuning tilting unit 6 drives the top shaft 17 at the small end of the tapered roller to move and clamp the tapered roller 8, and the fine-tuning tilting unit 6 includes the tilting top plate 19 on the tapered roller driving motor support 23 , a fine-tuning screw 20 is set on the tilt-adjusting top plate 19, and the fine-tuning screw 20 presses against the tilt-adjusting plate 18. After the small end jacking shaft 17 pushes against the tapered roller 8, under the action of the fine-tuning screw 20, the tapered roller 8 is driven to incline at a micro-angle. 22, the protrusion 22 moves in the groove 24, the loading unit 5 includes a differential screw drive 25 and a hand wheel 46, the differential screw drive 25 is composed of a differential screw 26, a coarse thread nut 27, a fine thread screw Cap 28, spring 29, sensor 30, buckle cover 31 and loading cap 32, loading cap 32 is matched with spherical plain bearing inner shaft 33, spherical plain bearing inner shaft 3 is matched with spherical plain bearing inner ring 34, and spherical plain bearing inner ring 34 can be opposite Rotating on the joint bearing outer ring 35, it also includes a counterweight screw 36 arranged at the rear end of the tapered roller drive motor support 23, the counterweight screw 36 is matched with the counterweight 37, and the translation unit 7 includes a translation plate 38, which translates The threaded front seat 39 is arranged on the plate 38, the threaded front seat 39 is connected with the translation screw 40, the other end of the translation screw 40 is connected with the threaded back seat 41, the threaded back seat 41 is fixedly connected with the upper table 1 of the measuring device, and the tapered roller positioning unit includes The calibration disc 9 is provided with a notch 46, and the front end of the notch 46 is provided with a circular arc. The translation unit 7 also includes a support shaft 42, which is connected to the translation bearing 43, and the upper table 1 of the measuring device is provided with a track groove 44. The translation bearing 43 moves in the track groove 44 of the upper table 1 of the measuring device.

A contact pair adjustment method, including the following steps: (1) Determination of the contact position of the tapered roller: determine the taper angle θ of the tapered roller and the radius r2 of the small end of the tapered roller, and use the formula d=r2/sinθ to calculate the tapered roller The distance d between the small end of the glass disc and the center of rotation of the glass disc, select the notch position of the calibration disc; (2) Clamping and position adjustment of the tapered roller: align the large end of the tapered roller 8 with the top shaft of the large end of the tapered roller 14, move the fine-tuning unit 6 to clamp the tapered roller 8 with the top shaft 17 at the small end of the tapered roller, then drive the loading unit 5 to make the tapered roller 8 and the glass disc 45 initially contact, and finally drive the translation unit 7 to move the cone Adjust the roller 8 to the contact position; (3) Loading of the tapered roller: adjust the position of the counterweight 37 to set the contact load to zero, and rotate the handwheel 46 to drive the loading unit 5 to load the required load for the experiment; (4 ) Adjustment of the contact state: Rotate the fine-tuning screw 20 to fine-tune the contact state of the tapered roller 8, first theoretically calculate the contact radius of the small end of the tapered roller 8 and the large end of the tapered roller 8 under a given uniform load, and then adjust the fine-tuning Tilting unit 6, after adjustment, compare the difference between the contact radius between the small end of tapered roller 8 and the large end of tapered roller 8 and the theoretical value. After repeated adjustments, the tapered roller 8 can be in a uniformly loaded state; (5) drive: disk The driving motor 12 and the tapered roller driving motor 16 respectively drive the glass disk 45 to rotate the spindle tapered roller 8 to realize the rotation of the glass disk 45 and the tapered roller 8; (6) measurement analysis: use the CCD image sensor to capture the tapered roller 8, the lubricating oil film thickness between the tapered roller 8 and the glass disc 45 is obtained by analyzing the image processing software.

The above is only a preferred embodiment of the utility model, and is not intended to limit the utility model in other forms. Any skilled person who is familiar with this profession may use the technical content disclosed above to change or remodel it into an equivalent change. Equivalent embodiment. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still belong to the protection scope of the present invention, as long as they do not deviate from the content of the solution of the present invention.

Claims (6)

1. A tapered roller bearing lubricating oil film measurement simulation device is characterized in that: it comprises a measuring device main body, and the measuring device main body includes a measuring device upper table and a measuring device lower table, and a glass disc drive unit and a tapered roller are arranged on the measuring device upper table The sub-drive unit, the glass disc drive unit and the tapered roller drive unit drive the elastic-hydrodynamic contact pair to rotate, the tapered roller drive unit connects the loading unit, the fine-tuning unit and the translation unit, and the contact position of the tapered roller is determined by the tapered roller positioning unit , at the same time, the elastohydrodynamic contact pair is matched with the optical measurement unit; the glass disk drive unit includes a glass disk rotation unit and a disk drive motor, the glass disk rotation unit is connected with the disk drive motor through a synchronous belt, and the disk drive motor is driven by the disk The drive motor support is supported, and the disk drive motor support is set under the upper table of the measuring device; the tapered roller drive unit includes tapered rollers, and the tapered roller big end top shaft at one end of the tapered roller is connected to the tapered roller through a coupling The sub-drive motor, the top shaft at the small end of the tapered roller at the other end is installed on the fine-tuning tilting unit, and the moving fine-tuning tilting unit drives the top shaft at the small end of the tapered roller to move and clamp the tapered roller. 2. The tapered roller bearing lubricating oil film measurement simulation device according to claim 1, characterized in that: the fine-tuning unit includes a tilt-adjusting top plate on the tapered roller drive motor support, and a fine-tuning screw is arranged on the tilt-adjusting top plate, The fine-tuning screw pushes against the tilting plate, and the tilting plate can be tilted around the tilting axis. On the tilting plate, a top shaft at the small end of the tapered roller is set, and the top shaft at the small end of the tapered roller presses against the tapered roller and is driven by the fine-tuning screw. The tapered rollers are inclined at a slight angle. 3. The tapered roller bearing lubricating oil film measurement simulation device according to claim 2, characterized in that: the tilting top plate is processed with grooves, and the tapered roller drive motor support is processed with protrusions, and the protrusions move in the grooves . 4. The tapered roller bearing lubricating oil film measurement simulation device according to claim 1, characterized in that: the loading unit includes a differential screw drive device, and the differential screw drive device consists of a differential screw, a coarse nut, a fine thread It is composed of tooth nut, spring, sensor, buckle cap and loading cap. The loading cap matches the inner shaft of the spherical plain bearing, the inner shaft of the spherical plain bearing matches the inner ring of the spherical plain bearing, and the inner ring of the spherical plain bearing can rotate relative to the outer ring of the spherical plain bearing. The utility model comprises a counterweight screw arranged at the rear end of the tapered roller drive motor support, and the counterweight screw matches the counterweight. 5. The tapered roller bearing lubricating oil film measurement simulation device according to claim 1, characterized in that: the translation unit includes a translation plate and a support shaft, a threaded front seat is arranged on the translation plate, the threaded front seat is connected with a translation screw, and the translation screw The other end is connected with the threaded back seat, the threaded back seat is fixedly connected with the upper table of the measuring device, the support shaft is connected with the translation bearing, the upper table of the measuring device is provided with a track groove, and the translation bearing moves in the track groove of the upper table of the measuring device. 6 . The tapered roller bearing lubricating oil film measurement simulation device according to claim 1 , characterized in that: the tapered roller positioning unit includes a calibration plate, a notch is provided on the calibration plate, and a circular arc is provided at the front end of the notch. 7 .