Synchronous belt slider reciprocating motion type line contact elastohydrodynamic lubrication oil film measuring device

Abstract

The present invention discloses a linear contact elastohydrodynamic lubricating oil film measuring device with a synchronous belt slider reciprocating motion, which includes a lower base plate, support columns, an upper table surface, a synchronous belt slider linear motion device, a motor bracket, a motor, a coupling, a glass disk clamping device, a loading device, a roller support device, a microscope adjustment device, an electric control box, and a computer. This linear contact elastohydrodynamic lubricating oil film measuring device with a synchronous belt slider reciprocating motion uses the synchronous belt slider linear motion device to perform linear reciprocating motion, and has the advantages of accurate transmission ratio, high transmission efficiency, high transmission precision, and compact structure. The glass disk adopts a small-area and replaceable solution, which improves the utilization rate of the glass disk. The loading device is a disk cam loading mechanism, and turning the handwheel makes the disk cam push the push rod to achieve the purpose of loading and unloading. During the experiment, the state of the lubricating oil film in the linear contact area can be visually observed on the computer and the image can be captured.

Description

Technical Field

[0001] The present invention relates to the technical field related to the measurement of elastohydrodynamic lubricating oil film, and specifically to a reciprocating linear contact elastohydrodynamic lubricating oil film measuring device. Background Art

[0002] According to the measurement of international authoritative institutions, 30%-50% of the world's energy is consumed by friction and wear, and more than 60% of material wear is caused by poor lubrication. Lubrication is the most direct and effective means to reduce friction and wear because there is a solid or liquid lubricating film between two contacting surfaces. The key lubrication type for film thickness measurement is elastohydrodynamic lubrication. The optical interference method is a film thickness measurement method based on the principle of equal thickness interference and can measure the thickness of a transparent lubricating film. The optical interference method can directly obtain the distribution information of the film thickness and is the most effective method for measuring the oil film thickness. However, most of the existing measuring devices are rotary reciprocating motions, and the glass disc is a large disc, which causes relatively large losses to the glass disc. Therefore, a new elastohydrodynamic lubricating oil film measuring device using linear reciprocating motion is needed. Summary of the Invention

[0003] The purpose of the present invention is to provide a synchronous belt slider reciprocating linear contact elastohydrodynamic lubricating oil film measuring device to solve the problem that most of the existing measuring devices are rotary motions, the glass disc is a large disc, and the losses to the glass disc are relatively large.

[0004] To achieve the above object, the present invention provides the following technical solutions: a synchronous belt slider reciprocating linear contact elastohydrodynamic lubricant film measuring device, comprising a lower base plate, support columns, an upper table surface, a synchronous belt slider linear motion device, a motor bracket, a motor, a coupling, a glass disk clamping device, a loading device, a roller support device, a microscope adjustment device, an electric control box, and a computer; the lower base plate is bolted to the lower ends of the support columns; there are four support columns in total, and the upper ends of the support columns are bolted to the upper table surface; the synchronous belt slider linear motion device includes a protective base, a driven bearing, a driving bearing, a driven pulley shaft, a driving pulley shaft, a synchronous belt, a driven pulley, a driving pulley, a separable slider, a guide rail support plate, and a guide rail; both sides of the protective base are respectively provided with a driving bearing hole and a driven bearing hole, and it has a shape with a lower middle and higher sides. The protective base is fixed to the upper table surface by bolts; there are two driven bearings in total, which are respectively fixed in the driven bearing holes; there are two driving bearings in total, which are respectively fixed in the driving bearing holes; the middle of the driven pulley shaft is connected to the driven pulley by a flat key, and both ends are respectively fixed to the inner rings of the driven bearings; the middle of the driving pulley shaft is connected to the driving pulley by a flat key and is fixed to the inner ring of the driving bearing; the separable slider includes a lower slider and an upper slider, and the lower slider forms a moving pair with the guide rail; the synchronous belt is fixed between the upper slider and the lower slider by bolts; the synchronous belt is respectively connected to the driving pulley and the driven pulley; the driving pulley and the driven pulley have the same diameter; the separable slider makes a reciprocating linear motion driven by the synchronous belt and the motor; the guide rail support plate is fixed to the low concave parts on both sides of the protective base; the guide rail is fixed to the middle position of the guide rail support plate by countersunk head screws; the horizontal plane of the motor bracket is bolted to the upper table surface; the motor is bolted to the vertical surface of the motor bracket; the coupling is respectively connected to the input end of the driving pulley shaft and the output shaft of the motor; the glass disk clamping device includes a glass disk clamping fixture, a glass disk, and an adjusting screw; the glass disk is rectangular, is embedded in the glass disk clamping fixture, and is clamped by the adjusting screw. The adjusting screw forms a screw pair with the glass disk clamping fixture; the glass disk clamping device is bolted to the separable slider; the loading device is a disk cam loading mechanism, including a loading plate, a frame, a push rod, a disk cam, and a hand wheel; the loading plate is connected to the upper table surface to form a rotating pair; the frame is fixed to the upper table surface by bolts; the upper end of the push rod forms a moving pair with the frame, and the lower end contacts the disk cam; the disk cam forms a rotating pair with the lower end of the frame; the hand wheel is fixed to the disk cam, and rotating the hand wheel makes the disk cam push the push rod to achieve the purpose of loading and unloading; the roller support device includes a support base, rollers, and rollers; the support base is fixed to the groove of the loading plate by screws;The roller is placed in the middle of the roller wheel.

[0005] Further, the microscope adjustment device can adjust the position of the microscope in the XYZ-axis directions through a knob, and includes a translation stage bracket, an XYZ translation stage, a microscope fixing bracket, and a microscope; the translation stage bracket is connected to the upper table surface by bolts; the XYZ translation stage is fixed on the translation stage bracket; the microscope fixing bracket is connected to the upper end of the XYZ translation stage; the microscope is fixed in the microscope fixing bracket; the wiring port at the upper end of the microscope is connected to the computer data acquisition interface.

[0006] Further, electrical control components and red and green light source emitters are arranged in the electric control box, and a start button and an emergency stop button are arranged on the operation surface. The electric control box is placed on the lower bottom plate; the computer is placed beside the measuring device.

[0007] The beneficial effects of the present invention are as follows: The synchronous belt slider reciprocating line contact elastohydrodynamic lubricating oil film measuring device adopts a synchronous belt slider linear motion device to perform linear reciprocating motion, which has the advantages of accurate transmission ratio, high transmission efficiency, high transmission precision, and compact structure. The glass disk adopts a small-area and replaceable solution, which improves the utilization rate of the glass disk. At the same time, during the measurement experiment, the state of the lubricating oil film in the line contact area can be directly observed on the computer and the image can be captured. Description of the Drawings

[0008] Figure 1 is the front view of the synchronous belt slider reciprocating line contact elastohydrodynamic lubricating oil film measuring device of the present invention;

[0009] Figure 2 is the top view of the synchronous belt slider reciprocating line contact elastohydrodynamic lubricating oil film measuring device of the present invention;

[0010] Figure 3 is the structural schematic diagram of the synchronous belt slider linear motion device of the synchronous belt slider reciprocating line contact elastohydrodynamic lubricating oil film measuring device of the present invention;

[0011] Figure 4 is the structural schematic diagram of the glass disk clamping device of the synchronous belt slider reciprocating line contact elastohydrodynamic lubricating oil film measuring device of the present invention;

[0012] Figure 5 is the structural schematic diagram of the roller support device of the synchronous belt slider reciprocating line contact elastohydrodynamic lubricating oil film measuring device of the present invention.

[0013] In the figure: 1 - lower base plate; 2 - support column; 3 - upper tabletop; 4 - synchronous belt slider linear motion device; 5 - motor support; 6 - motor; 7 - coupling; 8 - glass disk clamping device; 9 - loading device; 10 - roller support device; 11 - microscope adjustment device; 12 - electric control box; 13 - computer; 401 - protective base; 4011 - active bearing hole; 4012 - driven bearing hole; 402 - driven bearing; 403 - active bearing; 404 - driven pulley shaft; 405 - active pulley shaft; 406 - synchronous belt; 407 - driven pulley; 408 - active pulley; 409 - separable slider; 410 - guide rail support plate; 411 - guide rail; 412 - lower slider; 413 - upper slider; 801 - glass disk clamping fixture; 802 - glass disk; 803 - adjusting screw; 901 - loading plate; 902 - frame; 903 - push rod; 904 - disk cam; 905 - hand wheel; 1001 - support base; 1002 - roller; 1003 - roller; 1101 - translation stage support; 1102 - XYZ translation stage; 1103 - microscope fixing bracket; 1104 - microscope. Detailed implementation mode

[0014] The following further describes the specific implementation of the present invention in conjunction with the accompanying drawings.

[0015] As Figure 1 、 2As shown in Figures 3, 4, and 5, the line contact elastohydrodynamic lubricating oil film measuring device with reciprocating motion of synchronous belt slider of the present invention includes a lower base plate 1, support columns 2, an upper table 3, a synchronous belt slider linear motion device 4, a motor bracket 5, a motor 6, a coupling 7, a glass disk clamping device 8, a loading device 9, a roller support device 10, a microscope adjustment device 11, an electric control box 12, and a computer 13; the lower base plate 1 is bolted to the lower ends of the support columns 2; there are four support columns 2 in total, and the upper ends of the support columns 2 are bolted to the upper table 3; the synchronous belt slider linear motion device 4 includes a protective base 401, a driven bearing 402, a driving bearing 403, a driven pulley shaft 404, a driving pulley shaft 405, a synchronous belt 406, a driven pulley 407, a driving pulley 408, a separable slider 409, a guide rail support plate 410, and a guide rail 411; on both sides of the protective base 401, there are a driving bearing hole 4011 and a driven bearing hole 4012 respectively, and it is in a shape with a lower middle and higher sides, and the protective base 401 is fixed to the upper table 3 by bolts; there are two driven bearings 402 in total, which are respectively fixed in the driven bearing holes 4012; there are two driving bearings 403 in total, which are respectively fixed in the driving bearing holes 4011; the middle of the driven pulley shaft 404 is connected to the driven pulley 407 by a flat key, and both ends are fixed to the inner rings of the driven bearings 402; the middle of the driving pulley shaft 405 is connected to the driving pulley 408 by a flat key and is fixed to the inner ring of the driving bearing 403; the separable slider 409 includes a lower slider 412 and an upper slider 413, and the lower slider 412 forms a moving pair with the guide rail 411; the synchronous belt 406 is fixed between the upper slider 413 and the lower slider 412 by bolts; the synchronous belt 406 is respectively connected to the driven pulley 407 and the driving pulley 408; the diameters of the driven pulley 407 and the driving pulley 408 are equal, and the separable slider 409 can make reciprocating linear motion driven by the synchronous belt 406 and the motor 6; the guide rail support plate 410 is fixed at the low concave parts on both sides of the protective base 401; the guide rail 411 is fixed at the middle position of the guide rail support plate 410 by countersunk head screws; the horizontal plane of the motor bracket 5 is fixed to the upper table 3 by bolts; the motor 6 is fixed to the vertical surface of the motor bracket 5 by bolts; the coupling 7 is respectively connected to the input end of the driving pulley shaft 405 and the output shaft of the motor 6; the glass disk clamping device 8 includes a glass disk clamping fixture 801, a glass disk 802, and an adjusting screw 803; the glass disk 802 is rectangular and is embedded in the glass disk clamping fixture 801 and is clamped by the adjusting screw 803, and the adjusting screw 803 forms a screw pair with the glass disk clamping fixture 801; the glass disk clamping fixture 801 is connected to the separable slider 409 by bolts;The loading device 9 is a disk cam loading mechanism, including a loading plate 901, a frame 902, a push rod 903, a disk cam 904, and a hand wheel 905; the loading plate 901 and the upper table surface 3 are connected to form a rotating pair; the frame 902 is fixed to the upper table surface 3 by bolts; the upper end of the push rod 903 cooperates with the frame 902 to form a sliding pair, and the lower end contacts the disk cam 904; the disk cam 904 and the lower end of the frame 902 form a rotating pair; the hand wheel 905 is fixed to the disk cam 904, and rotating the hand wheel 905 causes the disk cam 904 to push the push rod 903 to achieve the purpose of loading and unloading; the roller support device 10 includes a support base 1001, rollers 1002, and a roller 1003. The support base 1001 is fixed to the groove of the loading plate 901 by screws; the roller 1003 is placed between the rollers 1002.;

[0016] Further, the microscope adjustment device 11 includes a translation stage support 1101, an XYZ translation stage 1102, a microscope fixing bracket 1103, and a microscope 1104; the translation stage support 1101 is connected to the upper table surface 3 by bolts; the XYZ translation stage 1102 is fixed to the translation stage support 1101; the microscope fixing bracket 1103 is connected to the upper end of the XYZ translation stage 1102; the microscope 1104 is fixed in the microscope fixing bracket 1103; the upper wiring port of the microscope 1104 is connected to the data acquisition interface of the computer 13.

[0017] Further, electrical control components and red and green light source emitters are provided inside the electrical control box 12, and a start button and an emergency stop button are provided on the operation surface. The electrical control box 12 is placed on the lower bottom plate 1; the computer 13 is placed beside the measuring device.

[0018] As Figure 1 、 2As shown in FIGS. 3, 4, and 5, the working method steps of the line contact elastohydrodynamic lubricant film measuring device with synchronous belt slider reciprocating motion of the present invention are as follows: Start the computer 13 and the electric control box 12. After the equipment runs normally, take out the glass disk 802, clean and dry it, and then install it in the glass disk clamping fixture 801. Fix the glass disk 802 with the adjusting screw 803. Open the PLC control program to make the motor 6 drive the synchronous belt slider linear motion device 4 to drive the glass disk 802 to reciprocate slowly for leveling; Rotate the handwheel 905 to slowly apply a force to the loading plate 901 to form a line contact area between the roller 1003 and the glass disk 802. Adjust the position and magnification of the microscope 1104 until a clear and complete image is formed on the screen of the computer 13; Add lubricant at the contact position between the roller 1003 and the glass disk 802; Set the experimental parameters and collect the images of the reciprocating motion line contact elastohydrodynamic lubricant film during the experiment; After the image collection is completed, perform post-processing on the computer 13; By changing the experimental parameters, oil film images and film thickness values under different experimental conditions can be obtained.

[0019] The protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope defined by the claims.

Claims

1. A synchronous belt slider reciprocating motion type line contact elastohydrodynamic lubricant film measuring device, characterized in that: It includes a lower base plate, support columns, an upper table surface, a synchronous belt slider linear motion device, a motor bracket, a motor, a coupling, a glass disk clamping device, a loading device, a roller support device, a microscope adjustment device, an electric control box, and a computer; the lower base plate is bolted to the lower ends of the support columns; there are four support columns in total, and the upper ends of the support columns are bolted to the upper table surface; the synchronous belt slider linear motion device includes a protective base, a driven bearing, a driving bearing, a driven pulley shaft, a driving pulley shaft, a synchronous belt, a driven pulley, a driving pulley, a separable slider, a guide rail support plate, and a guide rail; on both sides of the protective base, there are respectively a driving bearing hole and a driven bearing hole, and it is in the shape of being lower in the middle and higher at both sides. The protective base is fixed to the upper table surface by bolts; there are two driven bearings in total, which are respectively fixed in the driven bearing holes; there are two driving bearings in total, which are respectively fixed in the driving bearing holes; the middle of the driven pulley shaft is connected to the driven pulley by a flat key, and both ends are fixed to the inner rings of the driven bearings; the middle of the driving pulley shaft is connected to the driving pulley by a flat key and is fixed to the inner ring of the driving bearing; the separable slider includes a lower slider and an upper slider, and the lower slider forms a moving pair with the guide rail; the synchronous belt is fixed between the upper slider and the lower slider by bolts; the synchronous belt is respectively connected to the driving pulley and the driven pulley; the driving pulley and the driven pulley have the same diameter; the separable slider makes a reciprocating linear motion driven by the synchronous belt and the motor; the guide rail support plate is fixed at the concave parts on both sides of the protective base; the guide rail is fixed at the middle position of the guide rail support plate by countersunk head screws; the horizontal plane of the motor bracket is fixed to the upper table surface by bolts; the motor is fixed to the vertical surface of the motor bracket by bolts; the coupling is respectively connected to the input end of the driving pulley shaft and the output shaft of the motor; the glass disk clamping device includes a glass disk clamping fixture, a glass disk, and an adjusting screw; the glass disk is rectangular, is embedded in the glass disk clamping fixture, and is clamped by the adjusting screw. The adjusting screw and the glass disk clamping fixture form a screw pair; the glass disk clamping device is connected to the separable slider by bolts; the loading device is a disk cam loading mechanism, which includes a loading plate, a frame, a push rod, a disk cam, and a handwheel; the loading plate and the upper table surface form a rotating pair; the frame is fixed to the upper table surface by bolts; the upper end of the push rod forms a moving pair with the frame, and the lower end contacts the disk cam; the disk cam and the lower end of the frame form a rotating pair; the handwheel is fixed to the disk cam, and rotating the handwheel makes the disk cam push the push rod to achieve the purpose of loading and unloading; the roller support device includes a support base, rollers, and a roller; the support base is fixed to the groove of the loading plate by screws; the roller is placed in the middle of the rollers; The microscope adjustment device can adjust the position of the microscope in the XYZ axis directions through a knob, and includes a translation stage bracket, an XYZ translation stage, a microscope fixing bracket, and a microscope; An electrical control component and a red-green light source emitter are arranged in the electric control box, and a start button and an emergency stop button are arranged on the operation surface. The electric control box is placed on the lower bottom plate; the computer is placed beside the measuring device.

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