Abrasion testing machine reciprocating driving mechanism and testing device thereof

Abstract

The utility model provides a reciprocating driving mechanism of an abrasion testing machine and a testing device of the reciprocating driving mechanism, two vertical inner sides of a reciprocating frame of the reciprocating driving mechanism are provided with sliding chutes, a cross-shaped motion sliding block is arranged in the sliding chutes of the reciprocating frame, and an eccentric wheel is arranged in a mounting hole in the center of the cross-shaped motion sliding block; the eccentric shaft is connected with the eccentric wheel shaft hole; reciprocating shafts are arranged on the opposite outer sides of the reciprocating frame. The testing device comprises a rack, a heating base, a linear reciprocating assembly, a testing groove, a pressure loading assembly, a testing clamp and a driving motor. The linear reciprocating assembly is simple in structure, the amplitude of the reciprocating linear motion is guaranteed through the double-eccentric structure design of the eccentric shaft and the eccentric wheel, and the test reciprocating stroke is adjustable. The reciprocating friction-wear testing machine is used for testing under a material extreme pressure condition and an oil product extreme pressure condition. The equipment is attractive in overall structural design, convenient to operate, high in automation degree, good in equipment operation stability and high in test precision, the actual working condition state of a material is simulated, and the test accuracy is improved.

Description

Technical Field

[0001] This utility model belongs to the field of testing equipment technology, and in particular relates to a reciprocating drive mechanism for a wear testing machine and its testing device. Background Technology

[0002] A friction and wear testing machine, also known as a friction tester or wear tester, is used to test the wear resistance of a sample's wear layer against friction paper at a specified speed under the action of a loaded friction body. The wear resistance of the wear layer (or coating) is determined by measuring the decrease in density (or the decrease in coating thickness) before and after friction. Friction and wear testing machines are also used to evaluate the lubricity, friction reduction, and wear resistance of target objects such as lubricating oils, coatings, and substrate materials. They are essential basic experimental tools for tribology researchers. Existing friction and wear testing machines use two types of relative motion for the friction pairs: reciprocating and rotary. Among them, the reciprocating friction and wear testing machine is used by most tribology researchers due to its good adaptability.

[0003] Common reciprocating friction and wear testing machines mainly achieve reciprocating motion through ball screws, electromagnetic oscillations, and crank-slider mechanisms. While these driving methods for achieving reciprocating motion meet the testing requirements of friction tests to a certain extent, they each have their own drawbacks.

[0004] While the ball screw method can change the stroke of large reciprocating motion, its reciprocating frequency is very low due to the commutation delay of the drive motor. This increases the experimental time and reduces the experimental efficiency in long-stroke friction tests. The electromagnetic oscillation method can achieve high-frequency reciprocating motion, but the amplitude of the oscillator needs to be kept at a certain value to ensure the stability of the oscillation frequency. Therefore, the reciprocating stroke cannot be changed arbitrarily, which is disadvantageous for friction experiments that require variable stroke research. The crank-slider method can change the stroke and reciprocating frequency, but the stability of the drive motor is affected because the slider applies a lateral cyclic inertial force to the motor shaft through the connecting rod during commutation, which in turn affects the overall testing accuracy of the testing machine. Patent CN 109781570 A discloses a high-frequency reciprocating friction and wear testing machine, including a base for fixing machine accessories, a lower sample clamp for fixing a lower sample, a reciprocating conversion mechanism above the lower sample clamp, and an upper sample clamp for fixing an upper sample, the upper sample clamp being mounted on the reciprocating conversion mechanism; a lifting mechanism drives the lower sample clamp to move vertically, causing the lower sample to abut or separate from the upper sample; the reciprocating conversion mechanism drives the upper sample clamp to move horizontally reciprocally; a three-dimensional force sensor is mounted below the lower sample clamp. This testing machine can improve experimental efficiency and ensure experimental accuracy. While its reciprocating conversion mechanism effectively improves experimental efficiency, the high installation density between mechanisms is not conducive to equipment assembly, makes sample installation inconvenient, and increases the difficulty of maintenance and repair. Utility Model Content

[0005] This invention provides a reciprocating drive mechanism for a wear testing machine and its testing device, which can effectively solve the above-mentioned problems.

[0006] This utility model is implemented as follows:

[0007] A reciprocating drive mechanism for a wear testing machine includes a linear reciprocating assembly. The linear reciprocating assembly has an eccentric shaft, a reciprocating frame, a cross-shaped motion slider, and an eccentric wheel. The two vertical inner sides of the reciprocating frame have grooves. The cross-shaped motion slider is disposed in the grooves of the reciprocating frame. The center of the cross-shaped motion slider has a mounting hole, and the eccentric wheel is disposed in the mounting hole. One end of the eccentric shaft is connected to the shaft hole of the eccentric wheel. The reciprocating frame has a reciprocating shaft perpendicular to the groove on its outer side.

[0008] As a further improvement, the eccentric shaft and eccentric wheel are provided with spline connections.

[0009] As a further improvement, the linear reciprocating assembly is also provided with a bearing housing and a guide sleeve, the bearing housing and the guide sleeve are connected to the linear reciprocating assembly, the eccentric shaft is provided on the bearing housing, and the two ends of the reciprocating shaft are respectively connected through the guide sleeve.

[0010] As a further improvement, the linear reciprocating assembly is also provided with a housing, the linear reciprocating assembly is disposed in the housing, the guide sleeve is fixed on the opposite side of the housing, the bearing seat is sealed to the housing, and an observation window is provided on one side of the housing.

[0011] As a further improvement, the eccentric wheel is provided with a balance wheel, which is symmetrically located on one side of the axial direction of the eccentric wheel, and the housing is filled with lubricating oil.

[0012] A testing device for an abrasion testing machine includes: a frame, a heating seat, a linear reciprocating assembly, a test groove, a pressure loading assembly, a test fixture, and a drive motor. The linear reciprocating assembly and the heating seat are fixed relative to each other on the frame. The test groove is disposed on the heating seat. The pressure loading assembly is disposed above the test groove. The test fixture is disposed between the test groove and the pressure loading assembly and is linked to one end of the reciprocating shaft of the linear reciprocating assembly. The drive motor is disposed on the frame and is linked to the eccentric shaft of the linear reciprocating assembly.

[0013] As a further improvement, the heating base is provided with a heating rod and a thermocouple one. The heating rod is arranged in the heating base below the test slot, and the thermocouple one is provided in the heating base for detecting the temperature of the heating base. The test slot is provided with a thermocouple two for detecting the temperature inside the test slot.

[0014] As a further improvement, the pressure loading assembly includes a loading bracket, a loading motor, a loading rope, a pressure lever, a hinge seat, a loading force sensor, a loading rod, and a load applying block. The loading bracket is mounted on the frame, the loading motor is fixed to the loading bracket, the loading rope is wound around the loading motor shaft via a turntable, the hinge seat is located below the frame between the loading bracket and the heating seat, the middle of the pressure lever is hinged to the hinge seat, one end of the pressure lever is connected to the loading rope, and the other end of the pressure lever is connected to the loading force sensor; the loading rod is vertically arranged, and its lower end is hinged to the loading force sensor via a force transmission rod, and its upper end is connected to the load applying block, which is located above the test fixture and applies downward pressure to the test fixture.

[0015] As a further improvement, the loading rod is provided with load guide seats on opposite sides. Each load guide seat is provided with a mounting base, a linear guide rail, a slider, a fixing clamp, a ball-head plunger, and a limiting block. The mounting base is fixed to the frame on the opposite outer side of the loading rod. The linear guide rail is vertically fixed to the mounting base on the side away from the loading rod. The slider is slidably connected to the linear guide rail. The fixing clamp is fixedly connected to the slider. The loading rod side of the fixing clamp is provided with a fixing groove. Fixing holes are provided on both sides of the fixing groove. The ball-head plunger is located in the fixing hole. The limiting block is fixedly connected to the loading rod. The limiting block is located between the two ball-head plungers in the fixing groove and is located at the upper end of the mounting base.

[0016] As a further improvement, a loading guide rod is hinged to the lower end of the loading rod, the loading guide rod is set perpendicularly to the pressure lever, and a guide seat is hinged to the other end of the loading guide rod, the guide seat is fixedly connected to the frame; a roller is provided at the upper end of the test fixture and is tumblingly connected to the load application block; a return spring is provided on the pressure lever between the loading rope and the loading hinge seat, and the other end of the return spring is connected to the frame.

[0017] As a further improvement, the heating seat is provided with elastic support legs, and the heating seat is connected to the frame through the elastic support legs. The offset direction of the elastic support legs is the same as the movement direction of the linear reciprocating assembly. A pressure sensor is provided on the side of the heating seat away from the linear reciprocating assembly. The pressure sensor is provided with a fixing bracket and connected to the frame. A pressure rod is provided between the pressure sensor and the heating seat or the test tank.

[0018] As a further improvement, the linear reciprocating assembly, pressure loading assembly, and drive motor are connected to a computer, and the heating rod, thermocouple one, thermocouple two, loading motor, loading force sensor, and pressure sensor are connected to the computer to collect data.

[0019] The beneficial effects of this utility model are as follows: The linear reciprocating assembly of this application has a simple structure, and through the double eccentric structure design of eccentric shaft and eccentric wheel, the amplitude of the reciprocating linear motion is guaranteed, and the test reciprocating stroke is adjustable. This reciprocating friction and wear testing machine is used for testing materials under extreme pressure conditions and oil under extreme pressure conditions, and has a test temperature; the reciprocating linear motion mechanism driven by the drive motor drives the test fixture to achieve linear reciprocating motion, the frequency of the reciprocating motion can be steplessly adjusted, and the motion stroke has multiple adjustable levels; the test specimen is installed on the test fixture, and the test sample is fixed in the test slot; the test specimen is driven by the linear motion mechanism to reciprocate linearly in the test slot and performs relative linear reciprocating motion with the test sample in the test slot; a pressure loading component is located above the test fixture, which applies a set pressure to the test fixture and transmits the pressure to the test specimen. The test slot is installed on a heating seat with elastic support feet, and a heating rod and thermocouple one are installed on the heating seat. A thermocouple two is installed on the test slot, and the test temperature can be set and selected by computer. When a test sample or oil fails, a precision pressure sensor immediately detects the slight change in force and transmits it to the computer. An internal algorithm then determines the test sample's failure and displays the test data on the screen. The device features adjustable test loading pressure and adjustable test reciprocating frequency. Test data is converted into visual data by an advanced internal algorithm and displayed on the computer screen. The equipment boasts an aesthetically pleasing overall design, is easy to operate, highly automated, exhibits good operational stability, and provides high testing accuracy. It simulates the actual working conditions of materials, improving experimental accuracy. Furthermore, the reciprocating linear drive mechanism of the testing machine effectively enhances experimental efficiency and durability. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is an exploded view of an embodiment of a reciprocating drive mechanism for a wear testing machine according to this utility model;

[0022] Figure 2 This is a schematic diagram of the eccentric shaft structure provided in an embodiment of a reciprocating drive mechanism for a wear testing machine according to this utility model;

[0023] Figure 3 This is a schematic diagram of the eccentric wheel structure provided in an embodiment of a reciprocating drive mechanism for a wear testing machine according to this utility model;

[0024] Figure 4This is a schematic diagram of the structure of a test device embodiment of a wear testing machine according to this utility model;

[0025] Figure 5 yes Figure 4 Enlarged diagram of A in the middle;

[0026] Figure 6 This is a schematic diagram of the unloaded state of the testing device of the wear testing machine of this utility model;

[0027] Figure 7 yes Figure 6 Enlarged diagram of B in the middle;

[0028] Figure 8 This is a top view of an embodiment of a wear testing machine according to the present invention;

[0029] Figure 9 yes Figure 8 Enlarged diagram of C in the middle;

[0030] Figure 10 This is a schematic diagram of the pressure loading component structure provided in an embodiment of a wear testing machine according to this utility model;

[0031] Figure 11 This is an exploded view of the load guide seat provided in an embodiment of the testing device of a wear testing machine according to this utility model;

[0032] Figure 12 This is a schematic diagram of the application state provided by an embodiment of the wear testing machine of this utility model.

[0033] Figure label:

[0034] Linear reciprocating assembly 1; Eccentric shaft 11; Reciprocating frame 12; Slide groove 121; Reciprocating shaft 122; Cross motion slider 13; Mounting hole 131; Eccentric wheel 14; Balance wheel 141; Spline 15; Bearing seat 16; Guide sleeve 17; Housing 18; Observation window 181; Frame 2; Heating base 3; Heating rod 31; Thermocouple 1 32; Elastic support leg 33; Pressure sensor 34; Fixing bracket 35; Pressure rod 36; Test groove 4; Thermocouple 2 41; Pressure loading assembly 5; Loading bracket 51; 52. Loading motor; 53. Loading rope; 54. Pressure lever; 541. Return spring; 55. Hinge seat; 56. Loading force sensor; 561. Force transmission rod; 57. Loading guide rod; 571. Guide seat; 572. Load application block; 58. Load guide seat; 59. Mounting seat; 591. Linear guide rail; 592. Slider; 593. Fixing clamp; 594. Fixing groove; 5941. Fixing hole; 5942. Ball head plug; 595. Limiting block; 596. Test fixture; 6. Roller; 61. Drive motor; 7. Computer; 8. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model.

[0036] In the description of this utility model, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0037] In the description of this utility model, the terms "upper", "middle", "side", "side", "upper side", "end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] Reference Figure 1-3 As shown, a reciprocating drive mechanism for a wear testing machine includes a linear reciprocating assembly 1. The linear reciprocating assembly 1 is provided with an eccentric shaft 11, a reciprocating frame 12, a cross-shaped sliding block 13, and an eccentric wheel 14. The two vertical inner sides of the reciprocating frame 12 are provided with sliding grooves 121. The cross-shaped sliding block 13 is connected to the sliding grooves 121 in the reciprocating frame 12. The center of the cross-shaped sliding block 13 is provided with a mounting hole 131. The eccentric wheel 14 is disposed in the mounting hole 131. One end of the eccentric shaft 11 is connected to the shaft hole of the eccentric wheel 14. The reciprocating frame 12 is provided with a reciprocating shaft 122 perpendicular to the sliding grooves 121 on the outer side.

[0039] The reciprocating linear drive mechanism, through its double eccentric structure design, enables adjustable stroke of the reciprocating motion and makes the structure more stable in operation.

[0040] Furthermore, the eccentric shaft 11 and the eccentric wheel 14 are connected by a spline 15.

[0041] The inherent eccentricity of the eccentric shaft 11 with spline 15 is T1; the inherent eccentricity of the eccentric sleeve with spline 15 is T2. When the eccentric sleeve and eccentric shaft 11 are connected via spline 15, rotating at different angles will result in a cumulative eccentricity between (T2-T1) and (T2+T1) in multiple adjustable ranges. The number of ranges is half the number of teeth on spline 15 plus one. By rotating the eccentric sleeve and eccentric shaft 11 to different spline 15 positions, the cumulative eccentricity can be adjusted in multiple ranges. The stroke of the reciprocating linear motion is twice the cumulative eccentricity. Therefore, the stroke can be continuously adjusted in multiple ranges.

[0042] Furthermore, the linear reciprocating assembly 1 is also provided with a bearing seat 16 and a guide sleeve 17. The bearing seat 16 and the guide sleeve 17 are connected to the linear reciprocating assembly 1. The eccentric shaft 11 is disposed on the bearing seat 16, and the two ends of the reciprocating shaft 122 pass through the guide sleeve 17 respectively.

[0043] The guide sleeve 17 ensures that the reciprocating frame 12 performs linear reciprocating motion.

[0044] Furthermore, the linear reciprocating assembly 1 is also provided with a housing 18, the linear reciprocating assembly 1 is disposed inside the housing 18, the guide sleeve 17 is fixed on the opposite side of the housing 18, the bearing seat 16 is sealed to the housing 18, and an observation window 181 is provided on one side of the housing 18.

[0045] Furthermore, the eccentric wheel 14 is provided with a balance wheel 141, which is symmetrically arranged on one side of the axial direction of the eccentric wheel 14, and the housing 18 is filled with lubricating oil.

[0046] By setting a balance wheel 141, the eccentric force generated by the rotation of the eccentric wheel 14 is balanced, reducing the wear of the components caused by the eccentric force; and by filling the housing 18 with lubricating oil, the linear reciprocating assembly 1 can run more stably and reduce wear.

[0047] Reference Figure 1-12 As shown, a test device for a wear testing machine includes: a linear reciprocating assembly 1, a frame 2, a heating seat 3, a test groove 4, a pressure loading assembly 5, a test fixture 6, and a drive motor 7. The linear reciprocating assembly 1 and the heating seat 3 are fixed relative to each other on the frame 2. The test groove 4 is disposed on the heating seat 3. The pressure loading assembly 5 is disposed above the test groove 4. The test fixture 6 is disposed between the test groove 4 and the pressure loading assembly 5 and is linked to one end of the reciprocating shaft 122 of the linear reciprocating assembly 1. The drive motor 7 is disposed on the frame 2 and is linked to the eccentric shaft 11 of the linear reciprocating assembly 1.

[0048] This reciprocating friction and wear testing machine is used for testing materials under extreme pressure conditions and oil under extreme pressure conditions. It has a test temperature setting. The test fixture 6 is driven by a reciprocating linear motion mechanism driven by a drive motor 7 to achieve linear reciprocating motion. The frequency of the reciprocating motion is infinitely adjustable, and the stroke has multiple adjustable levels. The test specimen is installed on the test fixture 6 and the test sample is fixed in the test groove. The test specimen is driven by the linear motion mechanism to reciprocate linearly in the test groove 4 and reciprocate linearly relative to the test sample in the test groove 4. A pressure loading component 5 is located above the test fixture 6. The pressure loading component 5 applies a set pressure to the test fixture 6 and transmits the pressure to the test specimen.

[0049] Mount the test specimen on the test fixture 6; secure the test sample to the test tank 4 with screws; pour the test oil into the test tank 4, ensuring the oil level is 2mm to 5mm above the test sample; raise the pressure loading component 5 above the test fixture 6 and engage it with the load guide seat 59. The linear guide rail 592 within the load guide seat 59 will constrain the pressure loading component 5, allowing it to move only up and down. Turn on the machine power and computer 8, and turn the loading and reciprocating switch to the closed position. Input the test conditions such as temperature, frequency, and load into the computer 8 and start the test on the computer. The machine will automatically complete the test and automatically compile the test data. This completes one test task.

[0050] Furthermore, the heating base 3 is provided with a heating rod 31 and a thermocouple 32. The heating rod 31 is arranged in the heating base 3 below the test slot 4, and the thermocouple 32 is provided in the heating base 3 to detect the temperature of the heating base 3. The test slot 4 is provided with a thermocouple 41 to detect the temperature in the test slot 4.

[0051] Temperature control is achieved through dual thermocouples, enabling more precise control of the temperature value within test tank 4.

[0052] Furthermore, the pressure loading assembly 5 includes a loading bracket 51, a loading motor 52, a loading rope 53, a pressure lever 54, a hinge seat 55, a loading force sensor 56, a loading rod 57, and a load applying block 58. The loading bracket 51 is mounted on the frame 2, the loading motor 52 is fixed to the loading bracket 51, the loading rope 53 is wound around the shaft of the loading motor 52 via a turntable, the hinge seat 55 is located below the frame 2 between the loading bracket 51 and the heating seat 3, the middle part of the pressure lever 54 is hinged to the hinge seat 55, one end of the pressure lever 54 is connected to the loading rope 53, and the other end of the pressure lever 54 is connected to the loading force sensor 56; the loading rod 57 is vertically inserted through the frame 2, and its lower end is hinged to the loading force sensor 56 via a force transmission rod 561, and its upper end is connected to the load applying block 58, which is located above the test fixture 6 and applies downward pressure to the test fixture 6.

[0053] The loading motor 52 drives the loading turntable 53 to rotate, providing tension to the loading rope 53, thereby applying torque to one end of the pressure lever 54. The torque is transmitted to the test fixture 6 through the loading force sensor 56, the loading rod 57 and the load application block 58, and the test fixture 6 forms a relative pressure with the sample in the test slot 4.

[0054] Furthermore, the loading rod 57 is provided with load guide seats 59 on opposite sides. Each load guide seat 59 is provided with a mounting base 591, a linear guide rail 592, a slider 593, a fixing plate 594, a ball-head plunger 595, and a limiting block 596. The mounting base 591 is fixed on the frame 2 on the opposite outer side of the loading rod 57. The linear guide rail 592 is vertically fixed on the mounting base 591 away from the loading rod 57. The slider 593 is slidably connected to the linear guide rail 592. The fixing plate 594 is fixedly connected to the slider 593. The fixing plate 594 has a fixing groove 5941 on the loading rod 57 side. The fixing groove 5941 has fixing holes 5942 on both sides. The ball-head plunger 595 is located in the fixing hole 5942. The limiting block 596 is fixedly connected to the loading rod 57. The limiting block 596 is located between the two ball-head plungers 595 in the fixing groove 5941 and is located at the upper end of the mounting base 591. The limiting block 596 is fixedly connected to the fixed clamping plate 594 via the ball head plug 595.

[0055] During the friction and wear test, the loading rod 57 fixes the limiting block 596 to the fixed clamping plate 594 by tightening the ball head plug 595. The loading rod 57, the slider 593 and the fixed clamping plate 594 are limited to vertical movement under the guidance of the linear guide rail 592. The load guide seat 59 can limit the loading rod 57 to vertical movement and apply downward pressure. In addition, the loading rod 57 can rotate to avoid obstacles, which facilitates the installation and removal of the sample in the test slot 4.

[0056] When it is necessary to replace the sample in the test slot 4, unscrew the ball head plug 595, lift the loading rod 57 upward, and the limiting block 596 can be released from the fixing clamp 594. The loading rod 57 rotates around the hinge point of the force transmission rod 561 and the loading orientation rod 571. The upper end of the loading rod 57 and the load application block 58 are offset to one side of the test slot 4 to avoid the test slot 4, so as to facilitate the removal and installation of the sample in the test slot 4.

[0057] Furthermore, a loading guide rod 571 is hinged to the lower end of the loading rod 57. The loading guide rod 571 is perpendicular to the pressure lever 54. A guide seat 572 is hinged to the other end of the loading guide rod 571. The guide seat 572 is fixedly connected to the frame 2. A roller 61 is provided at the upper end of the test fixture 6 and is rollingly connected to the load application block 58. A return spring 541 is provided on the pressure lever 54 between the loading rope 53 and the loading hinge seat 55. The other end of the return spring 541 is connected to the frame 2.

[0058] By setting the loading guide rod 571, the loading rod 57 can be made to move more stably up and down, avoiding swaying or deviation, and the pressure value is more stable and accurate.

[0059] Furthermore, the heating seat 3 is provided with elastic support legs 33, and the heating seat 3 is connected to the frame 2 through the elastic support legs 33. The offset direction of the elastic support legs 33 is the same as the movement direction of the linear reciprocating assembly 1. A pressure sensor 34 is provided on the side of the heating seat 3 away from the linear reciprocating assembly 1. The pressure sensor 34 is provided with a fixing bracket 35 and connected to the frame 2. A pressure rod 36 is provided between the pressure sensor 34 and the heating seat 3 or the test tank 4 for mutual connection.

[0060] Furthermore, the linear reciprocating assembly 1, the pressure loading assembly 5, and the drive motor 7 are connected to a computer 8, and the heating rod 31, thermocouple 1 32, thermocouple 2 41, loading motor 52, loading force sensor 56, and pressure sensor 34 are connected to the computer 8 to collect data.

[0061] The test tank 4 is mounted on the heating base 3 of the elastic support foot. The heating base is equipped with a heating rod 31 and thermocouple 32. The test tank 4 is equipped with thermocouple 41. The test temperature can be set and selected via computer 8. When the test sample or oil fails, the elastic support foot 33 shakes, and the precision pressure sensor 34 immediately senses the slight change in force and transmits it to the computer 8. An internal algorithm determines that the test sample has failed and displays the test data on the screen. The equipment features adjustable test loading pressure, adjustable test reciprocating stroke, and adjustable test reciprocating frequency. Test data is converted into visual data by an advanced internal algorithm and displayed on the screen of computer 8. The equipment has an aesthetically pleasing overall design, is easy to operate, highly automated, has good operational stability, and high test accuracy. It simulates the actual working conditions of materials, improving experimental accuracy. Furthermore, the reciprocating linear drive mechanism of the testing machine effectively improves experimental efficiency and durability.

[0062] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A reciprocating drive mechanism for a wear testing machine, characterized in that, The device includes a linear reciprocating assembly, which comprises an eccentric shaft, a reciprocating frame, a cross-shaped motion slider, and an eccentric wheel. The reciprocating frame has two vertical inner sides with sliding grooves, and the cross-shaped motion slider is connected to the sliding grooves in the reciprocating frame. The cross-shaped motion slider has a mounting hole at its center, and the eccentric wheel is disposed in the mounting hole. One end of the eccentric shaft is connected to the shaft hole of the eccentric wheel. The reciprocating frame has a reciprocating shaft perpendicular to the sliding groove on its outer side.

2. The reciprocating drive mechanism for a wear testing machine according to claim 1, characterized in that, The eccentric shaft and eccentric wheel are provided with spline connections.

3. The reciprocating drive mechanism for a wear testing machine according to claim 1, characterized in that, The linear reciprocating assembly is further provided with a bearing seat and a guide sleeve. The bearing seat and guide sleeve are connected to the linear reciprocating assembly. The eccentric shaft is located on the bearing seat, and the two ends of the reciprocating shaft are respectively connected through the guide sleeve.

4. The reciprocating drive mechanism for a wear testing machine according to claim 3, characterized in that, The linear reciprocating assembly also includes a housing, the linear reciprocating assembly is housed in the housing, the guide sleeve is fixed to the opposite side of the housing, the bearing seat is sealed to the housing, and an observation window is provided on one side of the housing; a balance wheel is provided on the eccentric wheel, the balance wheel is symmetrically located on one axial side of the eccentric wheel, and the housing is filled with lubricating oil.

5. A testing device for a wear testing machine, characterized in that, include: The device comprises a frame, a heating base, a linear reciprocating assembly, a test chamber, a pressure loading assembly, a test fixture, and a drive motor. The linear reciprocating assembly adopts the mechanism described in any one of claims 1-4. The linear reciprocating assembly and the heating base are fixed relative to each other on the frame. The test chamber is disposed on the heating base. The pressure loading assembly is disposed above the test chamber. The test fixture is disposed between the test chamber and the pressure loading assembly and is linked to one end of the reciprocating shaft of the linear reciprocating assembly. The drive motor is disposed on the frame and is linked to the eccentric shaft of the linear reciprocating assembly.

6. The testing apparatus for a wear testing machine according to claim 5, characterized in that, The heating base is equipped with a heating rod and a thermocouple 1. The heating rod is arranged in the heating base below the test slot. The thermocouple 1 is installed in the heating base to detect the temperature of the heating base. The test slot is equipped with a thermocouple 2 to detect the temperature inside the test slot.

7. The testing apparatus for a wear testing machine according to claim 5, characterized in that, The pressure loading assembly includes a loading bracket, a loading motor, a loading rope, a pressure lever, a hinge seat, a loading force sensor, a loading rod, and a load applying block. The loading bracket is mounted on the frame, and the loading motor is fixed to the loading bracket. The loading rope is wound around the loading motor shaft via a turntable. The hinge seat is located below the frame between the loading bracket and the heating seat. The middle part of the pressure lever is hinged to the hinge seat, one end of the pressure lever is connected to the loading rope, and the other end of the pressure lever is connected to the loading force sensor. The loading rod is vertically arranged, and its lower end is hinged to the loading force sensor via a force transmission rod. Its upper end is connected to the load applying block, which is located above the test fixture and applies downward pressure to the test fixture.

8. The testing apparatus for a wear testing machine according to claim 7, characterized in that, The loading rod is provided with load guide seats on opposite sides. Each load guide seat is provided with a mounting base, a linear guide rail, a slider, a fixing plate, a ball-head plunger, and a limiting block. The mounting base is fixed to the frame on the opposite outer side of the loading rod. The linear guide rail is vertically fixed to the mounting base on the side away from the loading rod. The slider is slidably connected to the linear guide rail. The fixing plate is fixedly connected to the slider. The fixing plate is provided with a fixing groove on the loading rod side. The fixing groove is provided with fixing holes on both sides. The ball-head plunger is located in the fixing hole. The limiting block is fixedly connected to the loading rod. The limiting block is located between the two ball-head plungers in the fixing groove and is located at the upper end of the mounting base.

9. The testing apparatus for a wear testing machine according to claim 7 or 8, characterized in that, The lower end of the loading rod is hinged to a loading guide rod, which is perpendicular to the pressure lever. The other end of the loading guide rod is hinged to a guide seat, which is fixedly connected to the frame. The upper end of the test fixture is provided with a roller that is tumblingly connected to the load application block. A return spring is provided on the pressure lever between the loading rope and the loading hinge seat, and the other end of the return spring is connected to the frame.

10. The testing apparatus for a wear testing machine according to claim 5, characterized in that, The heating seat is provided with elastic support legs, and the heating seat is connected to the frame through the elastic support legs. The offset direction of the elastic support legs is the same as the movement direction of the linear reciprocating component. A pressure sensor is provided on the side of the heating seat away from the linear reciprocating component. The pressure sensor is provided with a fixing frame and connected to the frame. A pressure rod is provided between the pressure sensor and the heating seat or the test tank.

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