CN106840676A - Shearing and tension and compression dual drive and the visual sliding bearing noise testing testing machine of film shape - Google Patents

Abstract

The invention relates to a sliding bearing noise measurement and testing machine with shear and tension-compression dual drives and a visible film shape. Two independent power sources generate tension-compression motion with adjustable amplitude and frequency between the shaft and the bearing, and the rotational speed Adjustable shearing motion to realize the lubricating oil film phenomenon of sliding bearings under the complex load and speed spectrum when they act together; the tension-compression and rotation transmission mechanisms drive the main shaft to perform tension-compression and shear motions respectively; the external measuring optical path mechanism can Realize the simultaneous acquisition and measurement of the oil film cavitation image and noise, displacement, tension pressure and vibration information in the relevant arc-shaped visible area; the high-precision adjustable drive mechanism is driven by a steel wire to drive the support to ensure the position of the movable support. The invention can simulate the oil film noise experiment of the sliding bearing, realize the tension-compression movement between the main shaft and the glass tank including the shearing, and can measure different tension-compression amplitudes, different tension-compression frequencies, different shear speeds, and different lubricating oil types. Tension and compression oil film noise including shear effects.

Description

Sliding bearing noise measurement and testing machine with shear and tension-compression dual drives and visible membrane shape

technical field

The invention relates to a sliding bearing noise measuring and testing machine with double drives of shearing and tension and compression and with visible film shape, which is used for the measurement of the formation of cavities in oil film and the noise generated by rupture.

Background technique

The force borne by the dynamically loaded sliding bearing changes with time, and the oil film in the sliding bearing is not only subjected to tensile pressure, but also shear force. Dynamically loaded sliding bearings are widely used in various fields of the machinery industry, such as gas turbines, diesel engines, etc. With the rapid development of modern industrial technology, the requirements for the oil film of dynamic sliding bearings are getting higher and higher. The theory of oil film tension and pressure, which comprehensively considers the minimum oil film thickness, the maximum tensile pressure that can be tolerated, and the dynamic changes of cavitation, has matured and is developing closer to the actual working conditions. However, due to the action of dynamic load when the bearing is working, the oil film will produce irregular noise when it is working, which is very loud and disturbing. In order to truly explore the actual working conditions of the oil film, improve the performance of the bearing, reduce the impact of noise, and solve the troubles of the staff, it is necessary to carry out experimental research on the measurement of the oil film noise to verify the cause of the noise and the cavity in the oil film. The dynamic changes of this problem will help to deepen the cognition and understanding of this problem, and correctly analyze its influencing factors and lubrication mechanism.

The key to the noise measurement test of sliding bearings driven by both shear and tension and compression and whose film shape is visible is to ensure the relative positional relationship between the two axes of the main shaft and the arc-shaped glass tank. The noise is caused by the formation of cavities in the oil film under a certain negative pressure, and the rupture of the cavities. At the same time, in order to make the thickness of the oil film symmetrical about the axis, it must be ensured that the axis of the rotating spindle and the axis of the arc-shaped glass groove are on the same plane during the test. And this axis plane is perpendicular to the bottom surface. At the same time, in order to be able to collect the dynamic changes of the holes in the oil film related area, it is also necessary to ensure that the axis of the reflective glass is located on the above-mentioned axis plane. At present, quite a lot of research has been done on the pressure distribution of the dynamic load sliding oil film and the dynamic changes of the cavitation, but there are few researches on the noise generated by the cavitation rupture, and it only stays at the theoretical stage. In order to clearly understand the mechanism of noise generation According to the actual working state of the oil film, it is necessary to conduct experimental research on the noise analysis of the tension and compression oil film taking into account the shear effect.

Contents of the invention

The purpose of the present invention is to make up for the current research on the noise caused by the cracking of oil film cavitation, which only considers the effect of tension and compression, which is different from the actual working situation. It provides a sliding bearing with dual drives of shearing and tension and compression, and the film shape is visible. The noise measurement testing machine realizes the measurement of the noise of tension and compression oil film under different working conditions including the shear effect. Under the complex load of oil film under the joint action of cutting motion and the phenomenon of lubricating oil film of sliding bearing under the velocity spectrum, it can simultaneously collect the oil film cavitation image and noise, displacement, tension pressure and vibration information that appear in the relevant arc-shaped visible area.

In order to achieve the above object, design of the present invention is:

The exciter mechanism is used to realize the up and down tension and compression movement. The exciter is connected to the transition rod and other mechanisms to drive the moving bracket to move up and down so as to drive the main shaft to perform up and down extrusion movement; the motor drives the driving shaft to rotate through the synchronous belt, and the driving shaft is coupled through the tire. The device is connected to the experimental main shaft so that the main shaft performs a shearing motion of rotation; for the positional relationship between the main shaft and the arc-shaped glass tank, eight steel wires are used to pull the support on the upper and lower sides to ensure that the axis of the main shaft and the axis of the arc-shaped glass tank are in the same position. On the same plane and this axis plane is perpendicular to the bottom surface. At the same time, it is also necessary to ensure that the axis of the reflector is on this plane; in order to observe the dynamic changes of the tension and pressure oil film taking into account the shear effect, a trumpet-shaped arc-shaped transparent glass groove is used at the bottom. Use a high-speed CCD system to obtain panoramic depth pictures by placing it directly in front of the reflective glass for observation.

According to above-mentioned inventive conception, the present invention adopts following technical scheme:

A sliding bearing noise measurement and testing machine with dual drives of shear and tension and compression and with visible membrane shape, including: bottom plate, worktable, static pillar, support rod, upper plate, timing belt, experimental part, high-speed CCD system, moving support , tension and pressure transmission mechanism, rotation transmission mechanism, high-precision adjustable mechanism, external measuring optical path mechanism, and motor moving mechanism; the workbench is placed on the ground, the bottom plate is located on the workbench, and the four static pillars are connected by bolts On the bottom plate, the upper plate is positioned above the static pillars, and the support rods are fixed by screw connection between every two static pillars; the movable support is drawn on the static pillars by steel wires; Inside the enclosed space, the bottom of the experimental part is fixed on the base plate, and the top is connected with the moving bracket; the high-speed CCD system is fixed on the ground through a tripod; connected; the tension-compression transmission mechanism is located above the movable support, and is supported by an upper plate in the middle; the high-precision adjustable mechanism is located between the movable support and the static support, and is respectively connected with the dynamic support and the static support through threads and steel wire hooks; The motor moving mechanism is located at the bottom of the workbench, and is connected to the workbench by screws; the synchronous belt is located between the motor moving mechanism and the rotation transmission mechanism, and is used to transmit the rotational movement of the motor; the external measuring optical path mechanism is connected by screws fixed on the bottom plate.

The high-speed CCD system includes a high-speed CCD, a zoom lens, a cold light source, and a tripod; the tripod is located on the ground and is used to support the high-speed CCD system; Directly in front; the zoom lens is connected to the front of the high-speed CCD, and the cold light source is fixed on the zoom lens by screws.

The experimental part includes: a main shaft, a shaft sleeve, a pair of shaft sleeve retaining rings, an oil retaining cover, a pair of displacement sensors, an arc-shaped glass groove, the back of the oil pool support, the front of the oil pool support, a pair of angular contact ball bearings, a dynamic The front of the bracket bearing end cover, the rear of the moving bracket bearing end cover, the lip seal, the front of the oil pool flange, and the rear of the oil pool flange; the rear of the oil pool bracket and the front of the oil pool bracket are fixed on the bottom plate by screws above; the arc-shaped glass tank is located behind the oil pool support and above the front of the oil pool support, which is convenient for observing the dynamic changes of the oil film. The arc-shaped glass tank is used to hold lubricating oil; The back of the bracket and the top of the front of the oil pool bracket are fixed by screw connections to prevent splashing of lubricating oil during the experiment; the pair of displacement sensors are fixed on the top of the oil retaining cap through threaded connections for measuring the amplitude of tension and compression movement; the main shaft It is located at the lower part of the moving bracket and follows the moving bracket for tension and compression movement; the pair of angular contact ball bearings are located at both ends of the main shaft and fixed in the bearing seat of the moving bracket and the front plate of the moving bracket; the front cover of the moving bracket bearing is fixed by threads On the front plate of the moving bracket, the bearing end cover of the moving bracket is fixed on the bearing seat of the moving bracket through screws, and the clearance of the angular contact ball bearing is eliminated by adjusting the gasket; the lip seal ring is located on the bearing end cover of the moving bracket The front interior is used to prevent oil leakage; the bushing is fitted on the main shaft through a taper to ensure the coaxiality of the bushing and the main shaft; the pair of retaining rings of the bushing are fixed on the main shaft through threaded connection, and the bushing Axially fixed; the front of the oil pool flange and the rear of the oil pool flange are respectively fixed on the front of the frame oil pool bracket and the rear of the oil pool bracket through screw connections, the purpose is to hoop the rubber; rely on the shaft sleeve to align the arc The up and down vibration and tension of the shaped glass tank form the tension and pressure oil film; the shearing effect on the oil film is realized by the rotation of the main shaft.

The moving bracket includes: the rear plate of the moving bracket, the front plate of the moving bracket, the bearing seat of the moving bracket, a pair of flanges of the moving bracket, eight steel wire hooks, a cover plate of the moving bracket, and a pair of connecting plates of the moving bracket; Symmetrically connected to the rear plate of the movable support and the front plate of the movable support, and connected to the steel wire; the connecting plate of the movable support is located between the rear plate of the movable support and the front plate of the movable support, and is positioned by pins, and connected to the rear plate of the movable support by screws It is connected with the front plate of the movable support; the rear plate of the movable support and the front plate of the movable support are connected with eight steel wires through steel wire hooks, and the weight is borne by the steel wires; the bearing seat of the movable support is connected to the rear plate of the movable support by screws, and positioning by pins; the pair of moving bracket flanges are located at the lower part of the moving bracket, and are symmetrically installed on the bearing seat of the moving bracket and the front plate of the moving bracket through screw connections to play the role of hooping the rubber; the moving bracket cover The plate is located at the uppermost end of the movable support, and is connected to the rear plate of the movable support, the front plate of the movable support, and the connecting plate of the movable support through threads, and is connected with the tension-compression transmission mechanism through the thread in the middle, so as to drive the dynamic support mechanism to carry out the tension-compression movement.

The tension-compression transmission mechanism includes: an exciter, an exciter seat, a connecting rod, a tension-compression sensor, a transition rod, and an adjustment nut; the exciter seat is placed on the upper plate and fixed by screws; the exciter The vibrator is located on the exciter seat, connected to the exciter seat by screws, and can perform up and down pull-down movement under a certain input signal, change the frequency of the input signal to change the frequency of the pull-press movement, and adjust the power magnification to change the pull-down movement. The amplitude of the pressure movement; the upper part of the connecting rod is connected to the vibrator by threads; the upper part of the tension-compression sensor is connected to the bottom of the connecting rod by threads; the upper part of the transition rod is connected to the bottom of the tension-compression sensor by threads; the adjustment The upper part of the nut is connected to the bottom of the transition rod through threads, and the bottom is connected to the moving bracket mechanism. At the same time, the upper and lower threads of the nut are adjusted in different directions, so that the height of the moving bracket can be continuously adjusted; through the connecting rod, tension and pressure sensor, transition rod 1. Adjust the rigid connection between the nuts, transmit the up and down reciprocating motion of the exciter to the moving bracket step by step, and realize the continuous adjustment of the frequency and amplitude of the tension and compression motion.

The rotary transmission mechanism includes: a driving shaft, a tire coupling, a pair of angular contact ball bearings, a driving shaft bearing seat, a pair of driving shaft bearing end covers, and a large pulley; one end of the tire coupling passes through the experimental main shaft The other end is connected with the drive shaft; the angular contact ball bearings are located at both ends of the main shaft and fixed in the drive shaft bearing seat; the drive shaft bearing seat is connected to the bottom plate by bolts; the pair of drive shaft bearing ends The cover is symmetrically connected by screws and located on both sides of the bearing seat of the driving shaft, and the clearance of the angular contact ball bearing is eliminated by adding an adjusting gasket to the end cover and the outer ring of the bearing; the large pulley is connected with the other end of the driving shaft through a key to drive The rotary motion of a rotary drive mechanism.

The high-precision adjustable mechanism includes: a steel wire, a steel wire knob, and a steel wire pull rod; the steel wire pull rod is inserted into the waist-shaped hole corresponding to the static support, and can move forward and backward for a certain distance; one end of the steel wire is connected to the steel wire hook, and the other end It is connected with the steel wire pull rod; the steel wire knob is threadedly connected to the steel wire pull rod, and the rotating steel wire knob pulls the bracket through the elastic steel wire to fine-tune the position of the bracket.

The external measurement optical path realizes the equal distance from each point of the oil film to the high-speed CCD, and realizes the depth of field, including: reflective glass, reflective glass bracket; the reflective glass bracket is connected to the base plate through threads; Supported by a bracket, it has an opening angle of 45 ^° ; the high-speed CCD is located directly in front of the opening of the reflective glass, and the light from the cold light source is irradiated parallel to the reflective glass, and the reflective glass reflects the light vertically upwards to an arc On the glass tank, on the contrary, the image on the curved glass tank is reflected to the high-speed CCD system in the opposite direction; through the reflective glass with an opening angle of 45°, the distance from each point in the oil film related area to the reflective glass is the same as the distance to the high-speed CCD system after reflection. The sum of the distances of the CCDs is equal, so that the distances from each point in the oil film related area to the high-speed CCD are equal, and a clear panoramic depth image is presented.

The motor moving mechanism can realize the regular tensioning of the synchronous belt, and the mechanism includes: a motor moving platform, a small pulley, and a motor; the motor moves to the platform and is connected to the bottom of the workbench through threads; the motor moves through a threaded connection to the motor On the platform, at the same time, adjust the screw on the left side of the motor to make the motor move laterally to play the role of tensioning the synchronous belt; the small pulley is connected to the output shaft of the motor through a key, and the synchronous belt drives the rotation of the large pulley to realize Individual controllability of swivel movement.

Compared with the prior art, the present invention has obvious substantive features and advantages:

The invention can simulate the oil film experiment of the dynamic load sliding bearing. The diameter clearance of the bearing in the experiment is 0.15mm. When the main shaft performs the tension and compression movement, it can simultaneously perform the shearing movement with adjustable speed, and the two movements are independent of each other. Through the input power of the exciter signal, the continuous adjustment of the amplitude of 0-1mm can be realized. By changing the frequency of the input signal of the exciter, the tension and compression movement can be carried out at any frequency. By changing the speed of the motor, the shearing movement can be realized. It is carried out at 0-700 rpm, and the high-speed CCD system is used to take real-time pictures of the oil film driven by both shear and tension and compression, and you can see the dynamics of the generation, accumulation, and rupture of holes in the tension and compression oil film that includes shear At the same time, the computer is used to trigger synchronously, so that the image can correspond to the sensor signal at the same time; the tension and compression movement between the spindle and the glass tank can be realized, and different tension and compression amplitudes, different tension and compression frequencies, and different shear can be measured. Shearing speed, different lubricating oil types (respectively simulating the minimum oil film thickness of the sliding bearing, the dynamic load frequency of the main shaft, the main shaft rotation speed, and the lubricating oil type) include the tension and compression oil film noise of the shear effect, which is easy to control in real time and increase the reliability of the measurement.

The key to forming the tension and pressure oil film is to ensure the positional relationship between the main shaft and the arc-shaped glass tank, that is, the axis of the main shaft and the axis of the arc-shaped glass tank are on the same plane and the axis plane is perpendicular to the bottom surface. At the same time, it is necessary to ensure that the axis of the reflective glass is located On the above-mentioned axis plane, in order to achieve this purpose, the movable support is drawn by steel wires to ensure the positional relationship. The steel wires are divided into upper and lower layers, and each layer has four traction pieces at equal intervals. Make sure that the movable bracket is in the correct position and ensure the positional relationship between the main shaft and the curved glass trough.

In order to realize the panoramic depth of the image acquisition image and ensure that the images in the experimental part of the main shaft are clearly visible without blurring, a special reflective glass is designed, and a trumpet-shaped reflector with a 45° opening is used to make the key experimental part of the oil film separate from each other. The distances of the points after being reflected by the reflective glass are the same, which solves the problem of the depth of view and realizes a large viewing angle of 100° at the same time.

Description of drawings

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

Fig. 2 is a structural sectional view of the experimental part in the present invention.

Fig. 3 is a schematic structural view of the moving bracket of the present invention.

Fig. 4 is a structural sectional view of the motor moving mechanism in the present invention.

detailed description

Embodiments of the present invention are described in detail as follows in conjunction with accompanying drawings:

As shown in Figure 1, a sliding bearing noise measurement and testing machine with shear and tension-compression dual drives and a visible film shape includes: a bottom plate 6, a workbench 4, a static support 9, a support rod 8, an upper plate 10, a synchronous Belt 5, experimental part, high-speed CCD system, movable support, tension and pressure transmission mechanism, rotation transmission mechanism, high-precision adjustable mechanism, external measuring optical path mechanism, motor moving mechanism; the workbench 4 is placed on the ground, and the The base plate 6 is located on the workbench 4, and four static pillars 9 are connected to the base plate 6 by bolts, the upper plate 10 is located above the static pillars 9, and the support rods 8 are fixed by screw connection between every two static pillars 9 The moving support is drawn on the static support 9 by the steel wire 43; the experimental part is located in the space enclosed by the static support 9, the bottom of the experimental part is fixed on the base plate 6, and the top is connected with the moving support; the high-speed The CCD system is fixed on the ground by a tripod 20; the rotating transmission mechanism is screwed on the base plate 6 and is connected to the experimental part; the tension and compression transmission mechanism is located above the movable support, and is supported by an upper plate 10 in the middle; The high-precision adjustable mechanism is located between the moving support and the static support 9, and is respectively connected with the moving support and the static support 9 through threads and steel wire hooks; the motor moving mechanism is located at the bottom of the workbench 4 and is connected to the workbench 4 by screws; The synchronous belt 5 is located between the motor moving mechanism and the rotating transmission mechanism, and is used to transmit the rotational motion of the motor 3; the external measuring optical path mechanism is fixed on the bottom plate 6 by screws.

As shown in Figure 1, described high-speed CCD system comprises high-speed CCD19, zoom lens 18, cold light source 17, tripod 20; Described tripod 20 is positioned on the ground, is used to support high-speed CCD system; Described high-speed CCD19 is connected on tripod by screw thread 20 top, and is positioned at the direct front of external measuring light path mechanism; Described zoom lens 18 is connected in front of high-speed CCD19, and cold light source 17 is fixed on the zoom lens 18 by screw.

As shown in Figure 2, the experimental part includes: a main shaft 24, a shaft sleeve 29, a pair of shaft sleeve retaining rings 25, an oil retaining cap 37, a pair of displacement sensors 36, an arc-shaped glass groove 23, an oil pool support rear 21, Front 22 of oil sump support, pair of angular contact ball bearings 40, front of movable support bearing end cover 41, rear of movable support bearing end cover 47, lip seal ring 42, front of oil sump flange 39, rear of oil sump flange 28; the rear 21 of the oil sump support and the front 22 of the oil sump support are fixed on the bottom plate 6 by screws; the arc-shaped glass groove 23 is located above the rear 21 of the oil sump support and the front 22 of the oil sump support, which is convenient for observing the oil film The arc-shaped glass tank 23 is used to hold the lubricating oil; the oil retaining cover 37 is buckled on the top of the rear 21 of the oil sump support and the front 22 of the oil sump support, and is fixed by screw connection to prevent the lubricating oil during the experiment. Splash; the pair of displacement sensors 36 are fixed on the top of the oil deflector cap 37 through threaded connections, and are used to measure the amplitude of the tension-compression movement; the main shaft 24 is located at the bottom of the movable bracket, and follows the dynamic bracket to perform tension-compression movement; the pair of Angular contact ball bearings 40 are located at the two ends of the main shaft 24, and are fixed in the moving bracket bearing seat 48 and the moving bracket front plate 38; the front 41 of the moving bracket bearing end cover is fixed on the moving bracket front plate 38 by threads, and the moving bracket The back 47 of the bearing end cover is fixed on the bearing seat 48 of the moving bracket by screws, and the clearance of the angular contact ball bearing 40 is eliminated by adjusting the gasket; the lip seal 42 is located inside the front 41 of the bearing end cover of the moving bracket to prevent oil leakage; the shaft sleeve 29 is fitted on the main shaft 24 through a taper, and the coaxiality of the shaft sleeve 29 and the main shaft 24 is ensured; the pair of shaft sleeve retaining rings 25 are fixed on the main shaft 24 through threaded connection, and the shaft sleeve 29 for axial fixing; the front 39 of the oil sump flange and the rear 28 of the oil sump flange are respectively fixed on the front 22 of the frame oil sump support and the rear 21 of the oil sump support through screw connection, the purpose is to hoop the rubber 27 ; Rely on the shaft sleeve 29 to vibrate up and down the arc-shaped glass tank 23 to form a tension and pressure oil film; rely on the rotation of the main shaft 24 to realize the shearing effect on the oil film.

As shown in Fig. 1 and Fig. 2, described moving bracket comprises: moving bracket rear plate 30, moving bracket front plate 38, moving bracket bearing seat 48, a pair of moving bracket flanges 26, eight steel wire hooks 50, moving bracket Cover plate 31, a pair of moving bracket connecting plates 49; steel wire hooks 50 are symmetrically connected on the moving bracket rear plate 30 and the moving bracket front plate 38 by screws, and are connected with steel wires 43; the moving bracket connecting plate 49 is located behind the moving bracket Between the plate 30 and the front plate 38 of the moving bracket, positioning is carried out by a pin, and the rear plate 30 of the moving bracket and the front plate 38 of the moving bracket are connected by screws; Eight steel wires 43 are connected, and bear its weight by steel wire 43; Described movable support bearing seat 48 is connected on the movable support rear plate 30 by screw, and is positioned by pin; Said pair of movable support flange 26 is positioned at The lower part of the bracket is symmetrically installed on the bearing seat 48 of the moving bracket and the front plate 38 of the moving bracket through screw connections, and plays the role of hooping the rubber 27; Rear plate 30, movable support front plate 38, movable support connecting plate 49 are connected to each other with tension-compression transmission mechanism through the thread in the middle, and drive dynamic support mechanism to carry out tension-compression movement.

As shown in Figures 1 and 2, the tension-compression transmission mechanism includes: a vibrator 12, a vibrator seat 11, a connecting rod 33, a tension-compression sensor 34, a transition rod 35, and an adjustment nut 32; the vibrator The seat 11 is placed on the upper plate 10 and fixed by screws; the exciter 12 is located on the exciter seat 11, connected to the exciter seat 11 by screws, and can perform up and down pull-down movement under a certain input signal , change the frequency of the input signal to change the frequency of the tension-compression movement, adjust the power magnification to change the amplitude of the tension-compression movement; the upper part of the connecting rod 33 is threaded to the vibrator 12; the upper part of the tension-compression sensor 34 is connected to the The bottom of the rod 33 is connected; the top of the transition rod 35 is connected with the bottom of the tension and pressure sensor 34 through threads; the top of the adjustment nut 32 is connected with the bottom of the transition rod 35 through threads, and its bottom is connected with the movable support mechanism. The upper and lower threads of 32 have different rotation directions, so that the height of the movable support can be continuously adjusted; through the rigid connection between the connecting rod 33, the tension and pressure sensor 34, the transition rod 35, and the adjustment nut 32, the up and down reciprocation of the exciter 12 The movement is transmitted step by step to the moving bracket, realizing the continuous adjustment of the frequency and amplitude of the tension and compression movement.

As shown in Figures 1 and 2, the rotary transmission mechanism includes: a driving shaft 51, a tire coupling 44, a pair of angular contact ball bearings 40, a driving shaft bearing seat 45, a pair of driving shaft bearing end covers 46, a large Pulley 7; one end of the tire coupling 44 is connected to the experimental main shaft 24 by a key, and the other end is connected to the driving shaft 51; the angular contact ball bearings 40 are located at both ends of the main shaft 24 and are fixed in the driving shaft bearing seat 45 The drive shaft bearing seat 45 is connected to the bottom plate 6 by bolts; the pair of drive shaft bearing end caps 46 are symmetrically connected by screws and located on both sides of the drive shaft bearing seat 45, and adjusting gaskets are added to the end cap and the outer ring of the bearing The clearance of the angular contact ball bearing 40 is eliminated; the large pulley 7 is connected with the other end of the driving shaft 51 through a key, and drives the rotary motion of the rotary transmission mechanism.

As shown in Figure 1, Figure 2 and Figure 3, the high-precision adjustable mechanism includes: steel wire 43, steel wire knob 13, steel wire pull rod 14; the steel wire pull rod 14 is inserted in the waist-shaped hole corresponding to the static support 9, and can Move a certain distance back and forth; one end of the steel wire 43 is connected to the steel wire hook 50, and the other end is connected to the steel wire pull rod 14; the steel wire knob 13 is threadedly connected to the steel wire pull rod, and the rotating steel wire knob 13 is pulled by the elastic steel wire 43 to drive the support so that Fine-tune the position of the stand.

As shown in Fig. 1 and Fig. 2, described external measuring optical path realizes that the distances from each point of the oil film to the high-speed CCD are equal, and realizes the depth of field, including: reflective glass 15, reflective glass support 16; Connected to the bottom plate 6; the reflective glass 15 is supported by the reflective glass bracket 16, and has an opening angle of 45 ^° ; the high-speed CCD is located directly in front of the opening surface of the reflective glass 15, and the light irradiated by the cold light source 17 is irradiated in parallel to the On the reflective glass 15, the reflective glass 15 reflects the light vertically upwards and is reflected onto the curved glass groove 23. On the contrary, the imaging on the curved glass groove 23 is reflected to the high-speed CCD system along the opposite direction; the opening angle is 45° The reflective glass 15 of ° makes the distance from each point in the oil film related area to the reflective glass 15 equal to the sum of the distances to the high-speed CCD 19 after reflection, realizing the equal distance from each point in the oil film related area to the high-speed CCD 19, and presenting a clear panoramic depth image.

As shown in Figures 1 and 4, the motor moving mechanism can realize regular tensioning of the synchronous belt, and the mechanism includes: a motor moving platform 1, a small pulley 2, and a motor 3; the motor moves to the platform 2 through threaded connection At the bottom of the workbench 4; the motor 3 is screwed to the motor moving platform 1, and the motor is moved laterally by adjusting the screw on the left side of the motor 3 to play the role of tensioning the synchronous belt 5; the small pulley 2 passes through The key is connected with the output shaft of the motor 3, and the rotary motion of the large pulley 7 is driven by the synchronous belt 5 to realize the independent controllability of the rotary motion.

Claims (9)

1. it is a kind of to shear and tension and compression dual drive and the visual sliding bearing noise testing testing machine of film shape, it is characterised in that including： Base plate（6）, workbench（4）, quiet pillar（9）, support bar（8）, upper plate（10）, Timing Belt（5）, experimental section, high-speed CCD system System, dynamic support, tension and compression transmission mechanism, rotating actuator, high accuracy adjustable mechanism, external optical path mechanism, motor are moved Motivation structure；The workbench（4）Place on the ground, the base plate（6）Positioned at workbench（4）On, four quiet pillars（9）Pass through It is bolted to base plate（6）On, the upper plate（10）Positioned at quiet pillar（9）Top, the quiet pillar of each two（9）Between pass through spiral shell Line is connected the support bar（8）；The dynamic support is by steel wire（43）It is pulled in quiet pillar（9）On；The experimental section position In in quiet pillar（9）The inside in the space for surrounding, the bottom of experimental section is fixed on base plate（6）On, top is connected with dynamic support； The high-speed CCD system passes through tripod（20）Fix on the ground；The rotating actuator is by being threadedly connected to base plate（6） On, and be connected with experimental section；The tension and compression transmission mechanism is located at the top of dynamic support, and centre passes through upper plate（10）Support；Institute State high accuracy adjustable mechanism and be located at dynamic support and quiet pillar（9）Between, respectively by screw thread and steel wire hook and dynamic support and quiet Pillar（9）Connection；The motor travel mechanism is located at workbench（4）Bottom, is connected by screw in workbench（4）On；It is described Timing Belt（5）Between motor travel mechanism and rotating actuator, for transmitting motor（3）Rotary motion；It is described outer Zhi Shi optical paths mechanism is fixed by screws in base plate（6）On.

It is 2. according to claim 1 to shear and tension and compression dual drive and the visual sliding bearing noise testing testing machine of film shape, Characterized in that, the high-speed CCD system includes high-speed CCD（19）, zoom lens（18）, cold light source（17）, tripod（20）； The tripod（20）It rest on the ground, for supporting high-speed CCD system；The high-speed CCD（19）It is threadedly attached in three Foot stool（20）Top, and positioned at the front of external optical path mechanism；The zoom lens（18）It is connected to high-speed CCD （19）Front, cold light source（17）It is fixed by screws in zoom lens（18）On.

It is 3. according to claim 1 to shear and tension and compression dual drive and the visual sliding bearing noise testing testing machine of film shape, Characterized in that, the experimental section includes：Main shaft（24）, axle sleeve（29）, a pair of axle sleeve back-up rings（25）, gear oil cap（37）, one To displacement transducer（36）, arc glass groove（23）, after oil sump support（21）, before oil sump support（22）, a pair of angular contact ball axles Hold（40）, before dynamic bracket bearing end cap（41）, after dynamic bracket bearing end cap（47）, lip-type packing（42）, before oil sump ring flange （39）, after oil sump ring flange（28）；After the oil sump support（21）Before the oil sump support（22）Base plate is fixed on by screw （6）On；The arc glass groove（23）After oil sump support（21）Before oil sump support（22）Top, convenient observation oil film Dynamic change, arc glass groove（23）It is for holding lubricating oil；The gear oil cap（37）After being buckled in oil sump support（21） Before oil sump support（22）Top, be connected by screw fixation, lubricating oil splash is prevented during experiment；The pair of displacement sensing Device（36）It is connected through a screw thread and is fixed on gear oil cap（37）Top, the amplitude for measuring tension and compression campaign；The main shaft（24）Position In dynamic support bottom, tension and compression campaign is carried out with servo support；The pair of angular contact ball bearing（40）Positioned at main shaft（24）Two ends, It is fixed on dynamic rack shaft holder（48）With dynamic support foreboard（38）It is interior；Before the dynamic bracket bearing end cap（41）It is threadably secured In dynamic support foreboard（38）On, after the dynamic bracket bearing end cap（47）It is fixed by screws in dynamic rack shaft holder（48）On, Angular contact ball bearing is eliminated by adjust pad（40）Clearance；The lip-type packing（42）Before dynamic bracket bearing end cap （41）Inside, for preventing oil leak；The axle sleeve（29）By taper fit in main shaft（24）On, and ensure axle sleeve（29）And master Axle（24）Axiality；The pair of axle sleeve back-up ring（25）It is connected through a screw thread and is fixed on main shaft（24）On, to axle sleeve（29）Enter Row axial restraint；Before the oil sump ring flange（39）After oil sump ring flange（28）It is connected by screw respectively and is fixed on frame oil sump Before support（22）After oil sump support（21）On, in order to wale rubber（27）；By axle sleeve（29）To arc glass groove （23）Up-down vibration tension and compression formed tension and compression oil film；By main shaft（24）Rotation realize to the shearing effect of oil film.

It is 4. according to claim 1 to shear and tension and compression dual drive and the visual sliding bearing noise testing testing machine of film shape, Characterized in that, the dynamic support includes：Dynamic support back plate（30）, dynamic support foreboard（38）, dynamic rack shaft holder（48）, a pair Dynamic flange bracket disk（26）, eight steel wire hooks（50）, dynamic rack plate（31）, a pair dynamic rack connecting plates（49）；Wire peg Hook（50）Dynamic support back plate is symmetrically connected to by screw（30）With dynamic support foreboard（38）On, and and steel wire（43）It is connected；Institute State rack connecting plate（49）Positioned at dynamic support back plate（30）With dynamic support foreboard（38）Between, positioned by pin, lead to Screw is crossed with dynamic support back plate（30）With dynamic support foreboard（38）Connection；The dynamic support back plate（30）With dynamic support foreboard（38） By steel wire hook（50）With eight steel wires（43）It is connected, and by steel wire（43）Undertake its weight；The dynamic rack shaft holder （48）It is connected by screw in dynamic support back plate（30）On, and positioned by pin；The pair of dynamic flange bracket disk （26）Positioned at dynamic support bottom, it is connected by screw and is symmetrically mounted on dynamic rack shaft holder（48）With dynamic support foreboard（38）On, Play and wale rubber（27）Effect；The dynamic rack plate（31）Positioned at dynamic support topmost, it is threadingly attached to dynamic branch Frame back plate（30）, dynamic support foreboard（38）, dynamic rack connecting plate（49）, and by middle screw thread and tension and compression transmission mechanism phase Even, driving dynamic bracket institution carries out tension and compression campaign.

It is 5. according to claim 1 to shear and tension and compression dual drive and the visual sliding bearing noise testing testing machine of film shape, Characterized in that, the tension and compression transmission mechanism includes：Vibrator（12）, vibrator seat（11）, connecting rod（33）, tension-compression sensor （34）, transiting rod（35）, adjusting nut（32）；The vibrator seat（11）It is positioned over upper plate（10）On, and fixed by screw； The vibrator（12）Positioned at vibrator seat（11）On, it is connected by screw vibrator seat（11）, and can believe in certain input Upper and lower tension and compression campaign is carried out under number, changes the frequency of input signal so as to change the frequency of tension and compression campaign, regulation power amplification times Number changes the amplitude of tension and compression campaign；The connecting rod（33）Top is connected through a screw thread vibrator（12）；The tension-compression sensor （34）Top passes through screw thread and connecting rod（33）Bottom connection；The transiting rod（35）Top passes through screw thread and tension-compression sensor （34）Bottom connection；The adjusting nut（32）Top passes through screw thread and transiting rod（35）Bottom connection, its bottom with it is dynamic Bracket institution is connected, while adjusting nut（32）The rotation direction of upper and lower screw thread is different, so as to accomplish the continuously adjustabe of dynamic support height； By connecting rod（33）, tension-compression sensor（34）, transiting rod（35）, adjusting nut（32）Between be rigidly connected, by vibrator （12）The dynamic support that be transmitted to step by step that pumps, realize the frequency of tension and compression campaign and the continuously adjustabe of amplitude.

It is 6. according to claim 1 to shear and tension and compression dual drive and the visual sliding bearing noise testing testing machine of film shape, Characterized in that, the rotating actuator includes：Driving shaft（51）, tyre coupling（44）, a pair of angular contact ball bearings （40）, drive shaft bearing seat（45）, a pair of drive shaft bearing end caps（46）, big belt wheel（7）；The tyre coupling（44）One end With experiment main shaft（24）Connect by being bonded, the other end and driving shaft（51）It is connected；The angular contact ball bearing（40）Positioned at main shaft （24）Two ends, and it is fixed on drive shaft bearing seat（45）It is interior；The drive shaft bearing seat（45）It is bolted base plate（6） On；The pair of drive shaft bearing end cap（46）Symmetrically connected by screw positioned at drive shaft bearing seat（45）Both sides, by End cap and bearing outer ring addition adjust pad eliminate angular contact ball bearing（40）Clearance；The big belt wheel（7）By key and master Moving axis（51）The other end be connected, the rotary motion of transmission mechanism is rotated.

It is 7. according to claim 1 to shear and tension and compression dual drive and the visual sliding bearing noise testing testing machine of film shape, Characterized in that, the high accuracy adjustable mechanism includes：Steel wire（43）, steel wire knob（13）, steel wire pull bar（14）；The steel wire Pull bar（14）It is inserted in quiet pillar（9）In corresponding waist-shaped hole, a certain distance can be moved forward and backward；The steel wire（43）One end with Steel wire hook（50）It is connected, the other end and steel wire pull bar（14）It is connected；The steel wire knob（13）It is threadedly attached to steel wire On pull bar, rotatable wire knob（13）By elastic steel wire（43）Traction moves support so as to finely tune the position of dynamic support.

It is 8. according to claim 1 to shear and tension and compression dual drive and the visual sliding bearing noise testing testing machine of film shape, Characterized in that, the external optical path realizes that the distance of oil film each point to high-speed CCD is equal, panorama depth is realized, wrapped Include：Rear reflector（15）, rear reflector support（16）；The rear reflector support（16）It is connected through a screw thread and base plate（6）On； The rear reflector（15）By rear reflector support（16）Support, in 45^oThe angle of release at angle；The high-speed CCD is located at rear reflector （15）The front of opening surface, cold light source（17）Irradiate the parallel light for coming and be irradiated to rear reflector（15）On, rear reflector （15）By light along reflecting vertically upward, arc glass groove is reflexed to（23）On, conversely, arc glass groove（23）On imaging High-speed CCD system is reflexed in reverse direction；By the rear reflector that subtended angle is 45 °（15）, make oil film relevant range each point to instead Light glass（15）Distance and reflection after to high-speed CCD（19）It is equal apart from sum, realize oil film relevant range each point and arrive High-speed CCD（19）Distance it is equal, show clearly full depth image.

It is 9. according to claim 1 to shear and tension and compression dual drive and the visual sliding bearing noise testing testing machine of film shape, Characterized in that, the motor travel mechanism can realize the regular tensioning to Timing Belt, mechanism includes：Motor mobile platform （1）, small pulley（2）, motor（3）；The motor moves on to platform（2）It is threadedly attached in workbench（4）Bottom；The motor （3）It is connected through a screw thread motor mobile platform（1）On, while by adjusting motor（3）The screw in left side makes motor transverse shifting, Play tensioning Timing Belt（5）Effect；The small pulley（2）By key and motor（3）Output shaft is connected, by Timing Belt（5） Drive big belt wheel（7）Rotary motion, realize the individually controllable of rotary motion.