A double motion mode friction and wear testing machine with quick replaceable test module

Abstract

The utility model discloses a double motion mode friction and wear testing machine of quick replacement test module belongs to material tribological performance test equipment technical field, the testing machine includes frame, horizontal moving mechanism, force measuring mechanism, power mechanism and test module. The utility model drives through single power source, and adopts quick -change interface and modularization design, and the rotation friction module or reciprocating friction module is quickly installed on the same module seat, thereby realizes the convenient switching of two kinds of motion modes of rotation and reciprocation, and force measuring mechanism adopts gyroscopic universal structure, and the high accuracy of friction force measurement is ensured. The utility model effectively solves the problem of the existing equipment motion mode switching cumbersome, module replacement efficiency is low, and the problem of poor test consistency, and the test efficiency and precision are improved significantly, and are suitable for the friction and wear research under the complex working condition of multiple scenes.

Description

Technical Field

[0001] This utility model relates to the technical field of tribological property testing equipment for materials, specifically a dual-motion mode friction and wear testing machine with quickly interchangeable test modules. Background Technology

[0002] Friction and wear testing machines are crucial equipment for evaluating the tribological properties of materials, studying lubricant effectiveness, and predicting the service life of components. Current testing machines on the market have significant shortcomings in terms of functional diversity and testing efficiency. First, to achieve testing of the two basic motion modes of rotation and reciprocation, two independent drive and transmission systems are usually required, or cumbersome disassembly and replacement of mechanical parts are necessary. This process is time-consuming and labor-intensive, and it is difficult to guarantee repeatability, affecting the consistency of test data. Second, the replacement of functional modules (such as different friction pair fixtures, environmental simulation chambers, etc.) largely relies on tools and manual calibration, which is complex and introduces a high risk of human error. Furthermore, existing equipment lacks flexibility in simulating complex motions (such as rotation-reciprocating motion with specific phase differences) and in rapidly adapting to special environmental modules such as high and low temperatures, corrosion, and current-carrying environments, making it difficult to meet the urgent needs of aerospace, new energy vehicles, and new material research and development for efficient and accurate testing under complex conditions. Therefore, developing an integrated friction and wear testing machine capable of rapid switching of motion modes and tool-free quick replacement of functional modules is of great significance. Utility Model Content

[0003] Therefore, the purpose of this utility model is to provide a dual motion mode friction and wear testing machine with quick-change test modules, so as to solve the problems of cumbersome motion mode switching, low module replacement efficiency, poor test consistency and insufficient composite motion simulation capability in the prior art.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: This utility model provides a dual-motion mode friction and wear testing machine with quick-change test modules, including a frame, a horizontal moving mechanism, a force measuring mechanism, a power mechanism, and a test module; The frame includes an upper base plate and a lower base plate, and the upper base plate is fixedly connected to the lower base plate by multiple symmetrically arranged columns; The horizontal moving mechanism is fixedly installed on the top surface of the upper base plate, and the force measuring mechanism is installed on the horizontal moving mechanism; The power mechanism is fixedly installed on the upper base plate, and the power mechanism can be detachably connected to the test module. A loading component is installed on one end of the force measuring mechanism near the test module. An upper friction pair tooling is detachably installed on the lower end of the loading component. The upper friction pair tooling and the lower friction pair tooling detachably installed on the top of the test module come into contact during the friction experiment.

[0005] In one preferred embodiment of this utility model, the horizontal moving mechanism includes a support base, a lead screw, and a locking device. Two horizontal and parallel linear guide rails are provided on the support base. The lead screw is located between the two linear guide rails, and its two ends are rotatably connected to the support base. A sliding block is threaded onto the lead screw, and the sliding block slides and matches the linear guide rails. A support plate for installing a force measuring mechanism is fixedly connected to the top of the sliding block. The locking device is fixed to the outside of the support base. One end of the lead screw passes through the support base and the inside of the locking device and is connected to a handwheel.

[0006] In one preferred embodiment of this utility model, the loading assembly includes a loading rod and a weight rod, the lower end of the weight rod being fixedly connected to the upper end of the loading rod, and a friction pair tooling being detachably installed on the lower end of the loading rod.

[0007] In one preferred embodiment of this utility model, the force measuring mechanism includes a support plate, a crossbeam, a universal bracket, a force sensor, a leveling component, and a balance position limiting component. The support plate is fixed to the support plate. The horizontal shaft on the outer side of the universal bracket is rotatably mounted on a bearing seat via a horizontal bearing. The bearing seat is mounted on the support plate. The middle part of the crossbeam is rotatably connected to the vertical bearing on the universal bracket via a vertical shaft pin. One end of the crossbeam has a vertical through hole for installing a loading rod. The front end of the vertical through hole has a horizontal threaded hole. After the loading rod passes through the vertical through hole, it is fixed by a locking screw that is threaded to the horizontal threaded hole. The other end of the crossbeam is connected to a force measuring baffle. The leveling component is set on the side of the crossbeam close to the force measuring baffle. The balance position limiting component is mounted on the support plate and is located below the crossbeam on the side away from the force measuring baffle. The force sensor is mounted on the support plate via a main force measuring bearing. An auxiliary force measuring bearing is also provided on the support plate. The force measuring baffle is located between the force sensor and the auxiliary force measuring bearing.

[0008] In one preferred embodiment of this utility model, the leveling assembly includes a support, a balance adjustment block, and a leveling screw. There are two supports, which are arranged opposite to each other on the crossbeam. The two ends of the leveling screw are rotatably connected to the two supports respectively. The balance adjustment block is threadedly connected to the leveling screw, and its lower part is slidably matched with the crossbeam.

[0009] In one preferred embodiment of this utility model, the balance position limiting component includes a rotating shaft and a base. The base is fixed on a support plate, the rotating shaft is horizontally arranged, and its middle part is rotatably connected to the base. One end of the rotating shaft is connected to an eccentric wheel, and the other end is connected to a handle. The eccentric wheel is located below the crossbeam. Three spherical positioning grooves are provided on the side of the eccentric wheel near the base. An installation hole is provided on the base, and a positioning component is provided in the installation hole. The positioning component corresponds to the circumference of the spherical positioning groove. The positioning component includes a spring and a steel ball. The two ends of the spring abut against the steel ball and the base, respectively, and the steel ball contacts the eccentric wheel.

[0010] In one preferred embodiment of this utility model, the power mechanism includes a motor, a rotating shaft, and a module base. The motor is fixed to the bottom surface of the upper base plate via a base, and the rotating shaft is rotatably mounted on the upper base plate via a shaft seat. A drive toothed pulley is provided on the output shaft of the motor, and a driven toothed pulley is provided at the lower end of the rotating shaft. The drive toothed pulley and the driven toothed pulley are connected by a synchronous belt drive. The upper end of the rotating shaft is fixedly connected to the module base located above the upper base plate. A positioning groove is provided on the top surface of the module base, and a quick-connect hole is provided in the positioning groove.

[0011] In one preferred embodiment of this utility model, the test module is a reciprocating friction module, which includes an eccentric assembly and a reciprocating motion assembly. The eccentric assembly includes an eccentric seat and an eccentric bearing. The eccentric bearing is installed in the middle of the top of the eccentric seat. The bottom of the eccentric seat has a positioning part that matches the positioning groove. The eccentric seat also has symmetrically opened oblong holes. Several screw holes are opened on the top surface of the module seat located outside the positioning groove. Screws that match the screw holes are passed through the oblong holes to fix the eccentric seat to the module seat. A scale is set on the top surface of the module seat along the length of the positioning groove. The center section features an indicator line pointing to a scale. The reciprocating motion assembly includes a base, a base plate, a precision guide rail, and a precision slider. The precision slider slides and the precision guide rail. The precision guide rail is horizontally positioned on the base, and the precision slider is positioned at the bottom of the base plate. A vise for clamping the lower friction pair tooling is mounted on the top surface of the base plate. An eccentric pad with an eccentric groove is also mounted at the bottom of the base plate. The base has a notch in the center, and quick-locking pins are symmetrically positioned at both ends of the base. The base is fixed to the upper base plate by engaging the quick-release holes on the upper base plate with the quick-locking pins, so that the eccentric bearing is positioned within the eccentric groove.

[0012] In another alternative embodiment of this utility model, the test module is a rotary friction module. The rotary friction module includes an integrally machined stepped turntable. The bottom of the turntable has a positioning block that matches the positioning groove. The bottom of the positioning block has a quick-connect pin that matches the quick-connect hole. The upper surface of the turntable is machined with a screw hole matrix. The screw hole matrix is ​​used to fix various shapes and sizes of lower friction pair tooling through screws.

[0013] In one preferred embodiment of this utility model, a protective component is also included. The protective component includes a sealing cover and a mounting strip. The mounting strip is fixed to the upper base plate. The sealing cover is mounted on the mounting strip via a hinge. The sealing cover has a cuboid structure with rounded corners and its size matches the upper base plate. Sealing gaskets are pasted on the edges of the sealing cover.

[0014] Preferably, the mounting strip has multiple expansion holes.

[0015] Preferably, a limit block is installed after the mounting strip to limit the opening of the sealing cover to 90°.

[0016] Preferably, a handle is also installed on the outside of the sealing cover.

[0017] Compared with the prior art, the beneficial technical effects of this utility model are as follows: 1. This utility model uses a single power source (motor) combined with a composite transmission mechanism to drive the same main shaft to output rotational motion. Through a special module (rotational friction module, reciprocating friction module) that can be quickly installed / removed, the rotational motion is directly converted into the required rotational or reciprocating frictional motion. This enables rapid switching between rotational and reciprocating motion modes on the same device without the need to replace the drive unit, significantly improving equipment utilization and testing efficiency.

[0018] 2. This utility model enables rapid replacement of test modules by setting up quick-change interfaces such as positioning grooves, quick-connect holes, and quick-locking pins.

[0019] 3. This utility model employs a force-measuring mechanism with a gyroscope-like structure, allowing the crossbeam to rotate freely in both horizontal and vertical directions. Combined with a force sensor, it achieves high-precision, real-time measurement of frictional force. The direct loading of weights ensures the accuracy and stability of the load. Attached Figure Description

[0020] Figure 1 This is a perspective view of a dual-motion mode friction and wear testing machine with a quick-change test module according to this utility model; Figure 2 This is a perspective view of the frame in this utility model; Figure 3 This is a perspective view of the horizontal moving mechanism in this utility model; Figure 4 This is a front sectional view of the loading component in this utility model; Figure 5 This is a perspective view of the force measuring mechanism component in this utility model; Figure 6 This is a perspective view of the balance position limiting component in this utility model; Figure 7 This is a front sectional view of the balance position limiting component in this utility model; Figure 8 This is a perspective view of the universal bracket in this utility model; Figure 9 This is a top sectional view of the connection between the crossbeam and the universal bracket in this utility model; Figure 10 This is a perspective view of the protective component in this utility model; Figure 11 This is a front sectional view of the power mechanism in this utility model; Figure 12 This is a perspective view of the connection between the eccentric component and the module base in this utility model; Figure 13 This is a perspective view of the reciprocating motion component in this utility model; Figure 14 This is a perspective view of the reciprocating motion component in this utility model from another angle; Figure 15 This is a perspective view of the turntable of this utility model; Figure 16 This is a top view of the turntable of this utility model. Reference numerals: 1-Upper base plate, 2-Lower base plate, 3-Column, 4-Quick-fit hole, 5-Anchor mounting hole, 6-Side plate mounting hole, 7-Positioning pin mounting hole, 8-Support base, 9-Linear guide rail, 10-Screw screw, 11-Sliding block, 12-Support plate, 13-Locking device, 14-Handwheel, 15-Loading rod, 16-Weight rod, 17-Upper friction pair fixture, 18-Support plate, 19-Crossbeam, 1901-Vertical through hole, 1902-Vertical shaft pin, 20- Universal bracket, 2001-Horizontal axis, 21-Force sensor, 22-Leveling assembly, 2201-Support, 2202-Balance adjustment block, 2203-Leveling screw, 23-Balance position limiting assembly, 2301-Rotating shaft, 2302-Base, 2303-Eccentric wheel, 2304-Spherical positioning groove, 2305-Spring, 2306-Steel ball, 2307-Handle, 24-Horizontal bearing, 25-Vertical bearing, 26-Bearing seat, 27 - Locking screw, 28- Force measuring baffle, 29- Main force measuring bearing, 30- Auxiliary force measuring bearing, 31- Sealing cover, 32- Mounting strip, 3201- Expansion hole, 3202- Limit block, 33- Hinge, 34- Sealing gasket, 35- Handle, 36- Motor, 37- Rotating shaft, 38- Module base, 3801- Positioning slot, 3802- Quick-connect hole, 3803- Screw hole, 3804- Scale, 39- Base, 40- Shaft seat, 41- Drive gear 42-Driven toothed pulley, 43-Synchronous belt, 44-Eccentric seat, 4401-Oval hole, 4402-Indicator line, 45-Eccentric bearing, 46-Base, 4601-Positioning hole, 47-Base plate, 48-Precision guide rail, 49-Precision slider, 50-Bench vise, 51-Eccentric pad, 5101-Eccentric stop groove, 52-Quick locking pin, 53-Turntable, 5301-Positioning block, 5302-Quick pin, 5303-Screw hole matrix. Detailed Implementation

[0021] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments.

[0022] like Figure 1-14As shown, this embodiment provides a dual-motion mode friction and wear testing machine with a quickly replaceable test module, including a frame, a horizontal moving mechanism, a force measuring mechanism, a power mechanism, a test module, and protective components. The frame includes an upper base plate 1 and a lower base plate 2, with the upper base plate 1 fixedly connected to the lower base plate 2 by multiple symmetrically arranged columns 3. The horizontal moving mechanism is fixedly installed on the top surface of the upper base plate 1, and the force measuring mechanism is installed on the horizontal moving mechanism. The power mechanism is fixedly installed on the upper base plate 1 and is detachably connected to the test module. A loading component is installed on the force measuring mechanism near the test module, and an upper friction pair fixture 17 is detachably installed on the lower end of the loading component. The upper friction pair fixture 17 and the lower friction pair fixture detachably installed on the top of the test module come into contact during the friction test.

[0023] Specifically, the protective assembly provides a sealed chamber for the friction test, through which a protective gas (nitrogen, argon, etc.) can be introduced. It includes a sealing cover 31 and a mounting strip 32. The mounting strip 32 is fixed to the upper base plate 1. The sealing cover 31 is mounted on the mounting strip 32 via a hinge 33. The sealing cover 31 has a cuboid structure with rounded corners, and its size matches the upper base plate 1. A sealing gasket 34 is adhered to the edge of the sealing cover 31. In a preferred embodiment, the sealing gasket 34 is made of silicone.

[0024] Optionally, the mounting strip 32 has a plurality of expansion holes 3201 for mounting gas inlet holes and other module inlet holes.

[0025] Optionally, a limit block 3202 is installed after the mounting strip 32 to limit the opening of the sealing cover 31 to 90°, preventing excessive opening that could cause the sealing cover 31 to crack or damage the hinge 33.

[0026] Optionally, a handle 35 is also installed on the outside of the sealing cover 31 to facilitate the opening and closing of the sealing cover 31.

[0027] Optionally, the lower base plate 2 has foot mounting holes 5, through which adjustable feet (not shown in the figure) are installed below the lower base plate 2.

[0028] Optionally, a side plate mounting hole 6 is provided on the outer side of the column 3, and a side plate (not shown in the figure) is installed on the outer side of the column 3 through the side plate mounting hole 6, so that the power mechanism is inside the closed frame and the power mechanism is protected.

[0029] Specifically, the horizontal moving mechanism is used to adjust the friction position. It includes a support base 8, a lead screw 10, and a locking device 13. Two horizontal and parallel linear guide rails 9 are provided on the support base 8. The lead screw 10 is located between the two linear guide rails 9, and its two ends are rotatably connected to the support base 8. A sliding block 11 is threadedly connected to the lead screw 10, and the sliding block 11 slides and matches the linear guide rails 9. A support plate 12 for mounting the force measuring mechanism is fixedly connected to the top of the sliding block 11. The locking device 13 is fixed to the outside of the support base 8. One end of the lead screw 10 passes through the support base 8 and the inside of the locking device 13 and is connected to a handwheel 14. The position is manually adjusted by rotating the handwheel 14, and the lead screw 10 is locked in place by the locking device 13 to make the test more stable.

[0030] Specifically, the loading assembly includes a loading rod 15 and a weight rod 16. The lower end of the weight rod 16 is fixedly connected to the upper end of the loading rod 15. A friction pair fixture 17 is detachably installed on the lower end of the loading rod 15. The force measuring mechanism is used to measure the friction force during the test in real time. It includes a support plate 18, a crossbeam 19, a universal bracket 20, a force sensor 21, a leveling assembly 22, and a balance position limiting assembly 23. The support plate 18 is fixed on the support plate 12. The horizontal shaft 2001 on the outer side of the universal bracket 20 is rotatably mounted on the bearing seat 26 through the horizontal shaft 2001 bearing. The bearing seat 26 is mounted on the support plate 18. The middle part of the crossbeam 19 is rotatably connected to the vertical bearing 25 on the universal bracket 20 through a vertical shaft pin 1902. One end of the crossbeam 19 has a vertical through hole 1901 for installing the loading rod 15. 01 The front end is provided with a horizontal threaded hole; the loading rod 15 passes through the vertical through hole 1901 and is fixed by a locking screw 27 that is threaded to the horizontal threaded hole. The other end of the crossbeam 19 is connected to the force measuring baffle 28. The leveling component 22 is set on the side of the crossbeam 19 near the force measuring baffle 28. The balance position limiting component 23 is installed on the support plate 18 and is located below the crossbeam 19 on the side away from the force measuring baffle 28. The force sensor 21 is installed on the support plate 18 through the main force measuring bearing 29. The support plate 18 is also provided with an auxiliary force measuring bearing 30. The force measuring baffle 28 is located between the force sensor 21 and the auxiliary force measuring bearing 30.

[0031] In this invention, the force measuring mechanism adopts a gyroscope-like structure, and the crossbeam 19 can rotate freely in both the horizontal and vertical directions. The loading assembly provides the load for the friction test, and the weight rod 16 is used to hold the perforated weights. The upper friction pair fixture 17 can be selected from sample fixtures of different shapes (spheres, square pins, round pins, and other irregular shapes), sizes, and materials. The force sensor 21 can be selected from the U9B / C series or the LTH series.

[0032] Specifically, the leveling assembly 22 includes supports 2201, a balance adjustment block 2202, and leveling screws 2203. Two supports 2201 are arranged opposite each other on the crossbeam 19. The two ends of the leveling screws 2203 are rotatably connected to the two supports 2201 respectively. The balance adjustment block 2202 is threadedly connected to the leveling screws 2203, and its lower part slides against the crossbeam 19. By rotating the leveling screws 2203, the balance adjustment block 2202 can move left and right, thereby achieving the purpose of leveling.

[0033] Specifically, the balance position limiting component 23 includes a rotating shaft 2301 and a base 2302. The base 2302 is fixed on the support plate 18. The rotating shaft 2301 is horizontally arranged and its middle part is rotatably connected to the base 2302. One end of the rotating shaft 2301 is connected to an eccentric wheel 2303, and the other end is connected to a handle 2307. The eccentric wheel 2303 is located below the crossbeam 19. Three spherical positioning grooves 2304 are provided on the side of the eccentric wheel 2303 near the base 2302. The base 2302 has a mounting hole, and a positioning component is installed in the mounting hole. The positioning component corresponds to the circumference of the spherical positioning grooves 2304. The positioning component includes a spring 2305 and a steel ball 2306. The two ends of the spring 2305 abut against the steel ball 2306 and the base 2302 respectively, and the steel ball 2306 contacts the eccentric wheel 2303. The three spherical positioning grooves 2304 correspond to the three positions of the crossbeam 19: raised, horizontal, and lowered. The position of the crossbeam 19 can be adjusted by rotating the handle 2307.

[0034] In a preferred embodiment, the lower end of the weight rod 16 is threadedly connected to the upper end of the loading rod 15, and the lower end of the loading rod 15 is threadedly connected to the upper friction pair fixture 17. The upper friction pair fixture 17 is a friction ball fixture, and the lower friction pair fixture is a disc sample, for ball-disc friction experiments. During operation, the balance position limiting component 23 is rotated to a position where the crossbeam 19 is horizontal, the loading rod 15 is inserted into the vertical through hole 1901 of the crossbeam 19, so that the friction ball of the friction ball fixture contacts the lower friction pair fixture, and then the locking screw 27 is tightened. The balance adjusting block 2202 is adjusted so that the crossbeam 19 reaches a balanced state (the weights at both ends are the same), at which point the loading rod 15 is installed. During testing, the balance position limiting component 23 is rotated to a position where the crossbeam 19 can be lowered, and the perforated weight is placed on the weight rod 16. At this time, the load of the friction ball on the lower friction pair fixture is the weight of the weight.

[0035] Specifically, the power mechanism provides power to the test module and includes a motor 36, a rotating shaft 37, and a module base 38. The motor 36 is fixed to the bottom surface of the upper base plate 1 via a base 39. The rotating shaft 37 is rotatably mounted on the upper base plate 1 via a shaft seat 40. A drive toothed pulley 41 is provided on the output shaft of the motor 36, and a driven toothed pulley 42 is provided at the lower end of the rotating shaft 37. The drive toothed pulley 41 and the driven toothed pulley 42 are connected by a synchronous belt 43. The upper end of the rotating shaft 37 is fixedly connected to the module base 38 located above the upper base plate 1. A positioning groove 3801 is provided on the top surface of the module base 38, and a quick-connect hole 3802 is provided in the positioning groove 3801.

[0036] In one embodiment of this utility model, the test module is a reciprocating friction module used for reciprocating motion friction tests. The reciprocating friction module includes an eccentric assembly and a reciprocating motion assembly; the eccentric assembly includes an eccentric seat 44 and an eccentric bearing 45. The eccentric bearing 45 is installed at the top center of the eccentric seat 44. The bottom of the eccentric seat 44 has a positioning part that matches the positioning groove 3801. The eccentric seat 44 also has symmetrically arranged oblong holes 4401. Several screw holes 3803 are opened on the top surface of the module seat 38 located outside the positioning groove 3801. Screws matching the screw holes 3803 pass through the oblong holes 4401 to fix the eccentric seat 44 onto the module seat 38. A scale 3804 is set on the top surface of the module seat 38 along the length of the positioning groove 3801. An indicator line pointing to the scale 3804 is set at the center of the outer side of the eccentric seat 44. 4402; The reciprocating motion assembly includes a base 46, a base plate 47, a precision guide rail 48, and a precision slider 49. The precision slider 49 slides and matches the precision guide rail 48. The precision guide rail 48 is horizontally set on the base 46, and the precision slider 49 is set at the bottom of the base plate 47. A vise 50 for clamping the lower friction pair tooling is installed on the top surface of the base plate 47. An eccentric pad 51 with an eccentric stop groove 5101 is also installed at the bottom of the base plate 47. The base 46 has a notch in the middle, and quick-locking pins 52 are symmetrically arranged at both ends of the base 46. The base 46 is fixed to the upper base plate 1 by the quick-locking pins 52 cooperating with the quick-installation holes 4 opened on the upper base plate 1, so that the eccentric bearing 45 is in the eccentric stop groove 5101. The reciprocating friction module uses an eccentric wheel 2303 structure to convert the rotational motion into reciprocating motion. The indicator line 4402 and the scale 3804 can accurately indicate the eccentricity (i.e., the reciprocating stroke) of the eccentric bearing 45. When the rotating shaft 37 rotates, it drives the module base 38 to rotate, which in turn drives the eccentric bearing 45 to rotate. The eccentric bearing 45 pushes the eccentric pad 51 to move, thereby causing the reciprocating motion component to move, and the vise 50 to reciprocate. The lower friction pair tooling is clamped on the vise 50, so that the upper and lower friction pairs slide relative to each other.

[0037] Optionally, a positioning hole 4601 is provided at the bottom of the base 46, and a positioning pin mounting hole 7 is provided on the upper base plate 1 at the position corresponding to the positioning hole 4601. A positioning pin can be detachably installed in the positioning pin mounting hole 7. The positioning pin corresponds to the positioning hole 4601. By cooperating with the positioning pin and the positioning hole 4601, the installation position of the reciprocating friction module can be quickly determined.

[0038] Combined with appendix Figure 15-16 In another embodiment of this utility model, the test module is a rotary friction module used for performing rotary friction tests. The rotary friction module includes an integrally machined stepped turntable 53. The bottom of the turntable 53 has a positioning block 5301 that matches the positioning groove 3801. The bottom of the positioning block 5301 has a quick-connect pin 5302 that matches the quick-connect hole 3802. The upper surface of the turntable 53 is machined with a screw hole matrix 5303, which is used to fix various shapes and sizes of lower friction pair fixtures using screws. Preferably, the lower friction pair fixture is a disc sample. The disc sample is fixed to the top of the turntable 53 by the cooperation of screws and the screw hole matrix 5303. When the upper friction pair fixture 17 is a friction ball fixture, the friction ball fixture contacts the disc sample. When the motor 36 drives the rotating shaft 37 to rotate, it drives the module base 38 to rotate, thereby driving the rotary friction module to rotate.

[0039] In this invention, a rotary friction test is conducted when the rotary friction module is installed; a reciprocating friction test is conducted when the reciprocating friction module is installed. During the friction process, the frictional force acting on the upper friction pair tooling 17 causes the crossbeam 19 to exhibit a slight deflection tendency. This deflection tendency is transmitted to the force sensor 21 through the force measuring baffle 28. The force sensor 21 accurately captures this force signal and converts it into an electrical signal output, thereby measuring the frictional force in real time. The universal bracket 20 structure ensures that the components of the frictional force in both the horizontal and vertical directions can be effectively sensed, while avoiding interference from torques in other directions.

[0040] The above are merely embodiments of this utility model, described in a relatively specific and detailed manner, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

Claims

1. A dual-motion mode friction and wear testing machine with quickly interchangeable test modules, characterized in that: It includes a frame, a horizontal moving mechanism, a force measuring mechanism, a power mechanism, and a test module; The frame includes an upper base plate and a lower base plate, with the upper base plate being fixedly connected to the lower base plate by multiple symmetrically arranged columns; The horizontal moving mechanism is fixedly installed on the top surface of the upper base plate, and the force measuring mechanism is installed on the horizontal moving mechanism; The power mechanism is fixedly installed on the upper base plate, and the power mechanism can be detachably connected to the test module. A loading component is installed on one end of the force measuring mechanism near the test module. An upper friction pair tooling is detachably installed on the lower end of the loading component. The upper friction pair tooling and the lower friction pair tooling detachably installed on the top of the test module come into contact during the friction experiment.

2. The dual-motion mode friction and wear testing machine with quick-change test modules according to claim 1, characterized in that: The horizontal moving mechanism includes a support base, a lead screw, and a locking device. Two horizontal and parallel linear guides are provided on the support base. The lead screw is located between the two linear guides and its two ends are rotatably connected to the support base. A sliding block is threaded onto the lead screw, and the sliding block slides and matches the linear guides. A support plate for installing a force measuring mechanism is fixedly connected to the top of the sliding block. The locking device is fixed to the outside of the support base. One end of the lead screw passes through the support base and the inside of the locking device and is connected to a handwheel.

3. The dual-motion mode friction and wear testing machine with quick-change test modules according to claim 1, characterized in that: The loading assembly includes a loading rod and a weight rod. The lower end of the weight rod is fixedly connected to the upper end of the loading rod, and a friction pair tooling can be detachably installed on the lower end of the loading rod.

4. The dual-motion mode friction and wear testing machine with quick-change test modules according to claim 3, characterized in that: The force measuring mechanism includes a support plate, a crossbeam, a universal bracket, a force sensor, a leveling assembly, and a balance position limiting assembly. The support plate is fixed to the support plate. The horizontal shaft on the outer side of the universal bracket is rotatably mounted on a bearing seat via a horizontal bearing. The bearing seat is mounted on the support plate. The middle part of the crossbeam is rotatably connected to the vertical bearing on the universal bracket via a vertical shaft pin. One end of the crossbeam has a vertical through hole for installing a loading rod. The front end of the vertical through hole has a horizontal threaded hole. After the loading rod passes through the vertical through hole, it is fixed by a locking screw that is threaded into the horizontal threaded hole. The other end of the crossbeam is connected to a force measuring baffle. The leveling assembly is set on the side of the crossbeam close to the force measuring baffle. The balance position limiting assembly is mounted on the support plate and is located below the crossbeam on the side away from the force measuring baffle. The force sensor is mounted on the support plate via a main force measuring bearing. An auxiliary force measuring bearing is also provided on the support plate. The force measuring baffle is located between the force sensor and the auxiliary force measuring bearing.

5. A dual-motion mode friction and wear testing machine with quickly interchangeable test modules as described in claim 4, characterized in that: The leveling assembly includes supports, a balance adjustment block, and a leveling screw. There are two supports, which are arranged opposite each other on the crossbeam. The two ends of the leveling screw are rotatably connected to the two supports respectively. The balance adjustment block is threadedly connected to the leveling screw, and its lower part is slidably matched with the crossbeam.

6. A dual-motion mode friction and wear testing machine with quickly interchangeable test modules as described in claim 4, characterized in that: The balance position limiting component includes a rotating shaft and a base. The base is fixed to a support plate. The rotating shaft is horizontally positioned and its middle part is rotatably connected to the base. One end of the rotating shaft is connected to an eccentric wheel, and the other end is connected to a handle. The eccentric wheel is located below the crossbeam. Three spherical positioning grooves are arranged in the same circle on the side of the eccentric wheel near the base. The base has mounting holes, and positioning components are installed in the mounting holes. The positioning components correspond to the circumference of the spherical positioning grooves. The positioning components include a spring and a steel ball. The two ends of the spring abut against the steel ball and the base, respectively, and the steel ball contacts the eccentric wheel.

7. The dual-motion mode friction and wear testing machine with quick-change test modules according to claim 1, characterized in that: The power mechanism includes a motor, a rotating shaft, and a module base. The motor is fixed to the bottom surface of the upper base plate via a base, and the rotating shaft is rotatably mounted on the upper base plate via a shaft seat. A drive toothed pulley is provided on the output shaft of the motor, and a driven toothed pulley is provided at the lower end of the rotating shaft. The drive toothed pulley and the driven toothed pulley are connected by a synchronous belt drive. The upper end of the rotating shaft is fixedly connected to the module base located above the upper base plate. A positioning groove is provided on the top surface of the module base, and a quick-connect hole is provided in the positioning groove.

8. A dual-motion mode friction and wear testing machine with quickly interchangeable test modules according to claim 7, characterized in that: The test module is a reciprocating friction module, which includes an eccentric assembly and a reciprocating motion assembly. The eccentric assembly includes an eccentric seat and an eccentric bearing. The eccentric bearing is installed at the top center of the eccentric seat. The bottom of the eccentric seat has a positioning part that matches the positioning groove. The eccentric seat also has symmetrically opened oblong holes. Several screw holes are opened on the top surface of the module seat located outside the positioning groove. Screws that match the screw holes are passed through the oblong holes to fix the eccentric seat to the module seat. A scale is set on the top surface of the module seat along the length of the positioning groove, and an indicator is set at the center of the outer side of the eccentric seat. The ruler's indicator line; the reciprocating motion component includes a base, a base plate, a precision guide rail, and a precision slider. The precision slider slides and the precision guide rail. The precision guide rail is horizontally set on the base. The precision slider is set on the bottom of the base plate. A vise for clamping the lower friction pair tooling is installed on the top surface of the base plate. An eccentric pad with an eccentric stop groove is also installed on the bottom of the base plate. There is a notch in the middle of the base. Quick-locking pins are symmetrically set at both ends of the base. The base is fixed to the upper base plate by the quick-locking pins cooperating with the quick-installation holes opened on the upper base plate, so that the eccentric bearing is in the eccentric stop groove.

9. A dual-motion mode friction and wear testing machine with quickly interchangeable test modules according to claim 7, characterized in that: The test module is a rotary friction module, which includes an integrally machined stepped turntable. The bottom of the turntable has a positioning block that matches the positioning groove. The bottom of the positioning block has a quick-connect pin that matches the quick-connect hole. The upper surface of the turntable is machined with a screw hole matrix, which is used to fix various shapes and sizes of lower friction pair tooling through screws.

10. A dual-motion mode friction and wear testing machine with quickly interchangeable test modules according to claim 1, characterized in that: It also includes a protective component, which includes a sealing cover and a mounting strip. The mounting strip is fixed to the upper base plate, and the sealing cover is installed on the mounting strip via a hinge. The sealing cover has a cuboid structure with rounded corners, and its size matches the upper base plate. Sealing gaskets are pasted on the edges of the sealing cover. The mounting strip has multiple expansion holes, and a limit block is installed behind the mounting strip to limit the opening of the sealing cover to 90°. A handle is also installed on the outside of the sealing cover.

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