A worm and gear lubricating grease high torque endurance tester

Abstract

The application relates to the technical field of grease performance testing, and provides a worm gear lubricating grease high-torque endurance testing machine, which comprises an equipment base and a motor arranged on the equipment base, the motor has an output shaft, a worm assembly is arranged on the output shaft, the worm assembly comprises at least three worms which are arranged at intervals along the axial direction of the output shaft, the radii of the worms are different from each other, a worm gear assembly comprises at least three worm gears which are in one-to-one correspondence with the at least three worms, each worm gear is rotatably and movably arranged on the equipment base, each worm gear can be engaged with or separated from the corresponding worm, and each worm gear can also be engaged with or separated from the adjacent worm gear, a lubricating grease injection mechanism is arranged on the equipment base and used for outputting the lubricating grease to each worm, and a current detection device is electrically connected with the motor, so that the worm gear lubricating grease high-torque endurance testing machine can accurately test the endurance of the lubricating grease between the worm gears.

Description

Technical Field

[0001] This application relates to the field of grease performance testing technology, and more specifically, to a high torque durability testing machine for worm gear grease. Background Technology

[0002] Grease, as a key lubricating medium between mating transmission components (such as between mating gears or between mating worm gears and worm shafts), plays a crucial role in forming an effective lubricating film to reduce friction and wear, thereby extending equipment lifespan and ensuring transmission efficiency. Worm gear drives, with their advantages of large transmission ratio, compact structure, and reverse self-locking, are widely used in key areas such as industrial gearboxes, lifting equipment, and automotive steering systems. However, this transmission method involves multi-tooth meshing primarily based on sliding friction, resulting in a large contact area. Especially under high torque loads, significant contact stress and instantaneous temperature rise occur between the meshing tooth surfaces.

[0003] In this harsh working environment, the durability of the grease directly determines the reliability and lifespan of the transmission system. If equipment operates continuously for extended periods, the grease needs to withstand high shear forces, oxidative deterioration, and temperature rise caused by frictional heat. Under the test of high torque and long-term operation, existing greases generally face a series of problems such as aging, oil separation, and changes in consistency. Ultimately, this leads to the grease drying out, hardening, and losing its fluidity. Poor lubrication drastically increases the frictional resistance at the worm gear mesh, significantly increasing mechanical power consumption, reducing transmission efficiency, causing machine overheating, accelerating component wear, and even potentially leading to motor stall, resulting in major malfunctions such as equipment downtime or damage to core components.

[0004] In the existing technology, the evaluation of the durability of greases in high-torque worm gear drives during the research and development, selection and equipment maintenance process still largely relies on the experience judgment of engineers, making it difficult to conduct a relatively accurate evaluation of the durability of greases. Summary of the Invention

[0005] In view of this, this application provides a high-torque durability testing machine for worm gear grease to solve the technical problem that it is difficult to accurately evaluate the durability of worm gear grease in the prior art.

[0006] This application provides a high-torque durability testing machine for worm gear grease, wherein the high-torque durability testing machine for worm gear grease includes: A device base and a motor mounted on the device base, the motor having an output shaft; The worm gear assembly includes at least three worms spaced apart along the axial direction of the output shaft, each worm having a different radius; The worm gear assembly includes at least three worm wheels corresponding one-to-one with the at least three worms. Each worm wheel is rotatably and movably mounted on the equipment base. Each worm wheel can engage or disengage with the corresponding worm, and each worm wheel can also engage or disengage with its adjacent worm wheel. A grease injection mechanism is provided on the equipment base for discharging grease to each of the worm gears; A current detection device is electrically connected to the motor.

[0007] Further, the at least three worms include a first worm, a second worm, and a third worm arranged sequentially along the axial direction of the output shaft. The worm gear assembly further includes a first moving shaft, a second moving shaft, and a third moving shaft. The first moving shaft is movably and lockably mounted on the device base. The second moving shaft is movably and lockably mounted on the device base. The third moving shaft is movably and lockably mounted on the device base. The at least three worm gears include a first worm gear corresponding to the first worm, a second worm gear corresponding to the second worm, and a third worm gear corresponding to the third worm. The first worm gear is rotatably loosely fitted onto the output shaft. On the first moving shaft, the second worm gear is rotatably loosely fitted on the second moving shaft, and the third worm gear is rotatably loosely fitted on the third moving shaft. The first moving shaft can move to different positions to drive the first worm gear to engage or disengage with the first worm and to engage or disengage with the second worm gear; the second moving shaft can move to different positions to drive the second worm gear to engage or disengage with the second worm, to engage or disengage with the first worm, and to engage or disengage with the third worm gear; the third moving shaft can move to different positions to drive the third worm gear to engage or disengage with the third worm and to engage or disengage with the second worm gear.

[0008] Furthermore, stop plates are respectively provided on the first moving shaft, the second moving shaft, and the third moving shaft, and the first worm gear, the second worm gear, and the third worm gear are respectively supported on the stop plates on the first moving shaft, the second moving shaft, and the third moving shaft.

[0009] Furthermore, a guide platform is provided on the equipment base, the guide platform is spaced apart from the equipment base, and a first arc guide groove and a second arc guide groove are provided on the guide platform, which are connected to each other. The lower ends of the first moving shaft, the second moving shaft and the third moving shaft are all movable and limited in the first arc guide groove and the second arc guide groove along the first arc guide groove and the second arc guide groove.

[0010] Furthermore, each of the first, second, and third moving shafts has a limiting disk coaxially disposed at its lower end. The limiting disk is movable and limited within the first and second arc guide grooves, and the radius of the limiting disk of each of the first, second, and third moving shafts is greater than the radius of the corresponding moving shaft.

[0011] Furthermore, the guide platform is provided with a first arc-shaped extension channel and a second arc-shaped extension channel that are connected to each other. The first arc-shaped extension channel has the same arc trajectory as the first arc-shaped guide groove, and the second arc-shaped extension channel has the same arc trajectory as the second arc-shaped guide groove. A first drive rod is provided at the lower end of the first moving shaft, a second drive rod is provided at the lower end of the second moving shaft, and a third drive rod is provided at the lower end of the third moving shaft. The first drive rod, the second drive rod, and the third drive rod all extend downward through the first arc-shaped extension channel and the second arc-shaped extension channel and extend downward through the guide platform.

[0012] Furthermore, each of the first drive rod, the second drive rod, and the third drive rod has a threaded rod portion extending downwards from the guide platform, and a locking nut is installed on the threaded rod portion.

[0013] Furthermore, the equipment base is provided with a first electrically controlled linear drive mechanism, a second electrically controlled linear drive mechanism, and a third electrically controlled linear drive mechanism arranged sequentially from top to bottom. The linear drive direction of each of the first, second, and third electrically controlled linear drive mechanisms is parallel to the output shaft of the motor. The first electrically controlled linear drive mechanism is connected to a first fork arm to drive the first fork arm to move along the output shaft of the motor. The second electrically controlled linear drive mechanism is connected to a second fork arm to drive the second fork arm to move along the output shaft of the motor. The third electrically controlled linear drive mechanism is connected to a third fork arm to drive the third fork arm to move along the output shaft of the motor. The portion of the first drive rod extending downward from the guide platform is limited by the first fork arm in the axial direction of the output shaft of the motor. The portion of the second drive rod extending downward from the guide platform is limited by the second fork arm in the axial direction of the output shaft of the motor. The portion of the third drive rod extending downward from the guide platform is limited by the third fork arm in the axial direction of the output shaft of the motor.

[0014] Furthermore, the grease injection mechanism includes a lateral drive mechanism, a lifting drive mechanism disposed on the lateral drive mechanism, and a grease outlet container disposed on the lifting drive mechanism.

[0015] Furthermore, the worm gear grease high torque durability testing machine includes a control console mounted on the equipment base, a display screen mounted on the control console, and a control unit in the control console. The control unit is electrically connected to the motor, current detection device, first electrically controlled linear drive mechanism, second electrically controlled linear drive mechanism, and third electrically controlled linear drive mechanism.

[0016] The beneficial effects of the high-torque durability testing machine for worm gear lubricating grease provided by this invention are as follows: Compared to existing technologies, the worm gear grease high torque durability testing machine provided by this invention has at least three worms spaced axially along the output shaft of the motor, at least three worm wheels corresponding to the at least three worms, a grease injection mechanism, and a current detection device. Therefore, during testing, the grease to be tested can be output to the worms through the grease injection mechanism, the motor can be started, and this time point can be recorded. When the worm and worm wheel are engaged in transmission, the grease between them gradually dries and hardens over time, causing a sharp increase in transmission resistance and even stalling. At this time, the current through the motor will increase rapidly, and the current detection device will detect the time point of this rapid increase in motor current. This time point corresponds to the motor... The duration between startup points can be used as a criterion for judging the durability of grease. The motor has an output shaft that can output the required high torque, which allows for precise testing of the durability of the grease under test during high-torque transmission of the worm gear. In addition, since the radii of each worm are different, the durability of the grease can be measured simultaneously under the working conditions of at least three worm gears with different radii. Furthermore, each worm wheel can engage or disengage with its corresponding worm, and each worm wheel can also engage or disengage with its adjacent worm wheel. When one worm wheel engages with its corresponding worm, by selectively engaging other worm wheels (equivalent to increasing or decreasing the load on the worm gear transmission mechanism), the durability of the grease under different load modes can be tested.

[0017] Overall, this high-torque durability testing machine for worm gear grease can objectively, accurately, and repeatably test the durability performance of grease between worm gears, providing reliable data support for grease formulation development, quality inspection, and selection in engineering applications, and helping to fundamentally avoid equipment failures caused by grease failure. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a perspective view of a high-torque durability testing machine for worm gear grease according to an embodiment of this application; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram illustrating the electrical connection principle of some components in a worm gear grease high torque durability testing machine according to an embodiment of this application; Figure 4 This is another perspective view of a worm gear grease high torque durability testing machine according to an embodiment of this application; Figure 5 for Figure 4 Enlarged view of point B in the middle; Figure 6 This is another perspective view of a worm gear grease high torque durability testing machine according to an embodiment of this application; Figure 7 This is a plan view of a portion of the structure of a worm gear grease high torque durability testing machine in a meshing state according to an embodiment of this application. Figure 8 This is a plan view of a portion of the structure of a worm gear grease high torque durability testing machine according to an embodiment of this application when it is in another meshing state; Figure 9 This is a plan view of a portion of the structure of a worm gear grease high torque durability testing machine according to an embodiment of this application when it is in another meshing state; Figure 10 This is a perspective view of a high-torque durability testing machine for worm gear grease according to an embodiment of this application; Figure 11 for Figure 10 Enlarged view of point C in the middle; Figure 12 This is a three-dimensional schematic diagram of a portion of the structure of a worm gear grease high torque durability testing machine according to an embodiment of this application.

[0020] Explanation of reference numerals in the attached figures: 1-Equipment base; 2-Motor; 3-Output shaft; 4-Ammeter; 5-Power supply; 6-First worm gear; 7-Second worm gear; 8-Third worm gear; 9-First moving shaft; 10-Second moving shaft; 11-Third moving shaft; 12-First worm wheel; 13-Second worm wheel; 14-Third worm wheel; 15-Stop plate; 16-Limiting disc; 17-First arc guide groove; 18-Second arc guide groove; 19-Upright plate; 20-Horizontal plate; 21-First drive rod; 22-Second drive rod; 23-Third drive rod ; 24-Locking nut; 25-First electrically controlled linear drive mechanism; 26-Second electrically controlled linear drive mechanism; 27-Third electrically controlled linear drive mechanism; 28-First fork arm; 29-Second fork arm; 30-Third fork arm; 31-Transverse drive mechanism; 32-Lifting drive mechanism; 33-Control console; 34-Display screen; 100-Guide platform; 101-First arc-shaped extension channel; 102-Second arc-shaped extension channel; 200-Grease outlet container; 201-Grease nozzle; 202-Grease inlet pipe. Detailed Implementation

[0021] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. One or more embodiments of this application are exemplarily shown in the drawings to provide a more accurate and thorough understanding of the technical solutions disclosed herein. However, it should be understood that this application can be implemented in many different forms and is not limited to the embodiments described below.

[0022] In the accompanying drawings of this application, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," "right," 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 application 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, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0023] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously.

[0024] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0025] See Figures 1 to 12 This application provides a high-torque durability testing machine for worm gear grease, wherein the high-torque durability testing machine for worm gear grease includes: The equipment base 1 and the motor 2 mounted on the equipment base 1, the motor 2 having an output shaft 3, the output shaft 3 of the motor 2 being able to output the required high torque; The worm gear assembly includes at least three worms spaced apart along the axial direction of the output shaft 3, each worm having a different radius; The worm gear assembly includes at least three worm wheels corresponding to at least three worms. Each worm wheel is rotatably and movably mounted on the equipment base 1. Each worm wheel can engage or disengage with the corresponding worm, and each worm wheel can also engage or disengage with its adjacent worm wheel. A grease injection mechanism is installed on the equipment base 1 and is used to output grease to each worm gear; A current detection device is electrically connected to the motor 2. The current detection device can be a current meter 4, which is connected in the circuit between the power supply 5 and the motor 2.

[0026] Specifically, the operating status of the worm gear transmission system is determined by testing the current of motor 2 using known methods. Changes in the current of motor 2 reflect the dynamic situation of the transmission load, thus helping to assess the meshing efficiency, wear degree, or potential faults of the worm gear. Specifically, smooth worm gear meshing indicates high transmission efficiency, relatively stable motor load, and a smooth current waveform within the rated range. Abnormal transmission occurs when there are problems such as wear, poor lubrication, meshing clearance, or jamming, leading to increased or fluctuating transmission resistance, causing changes in motor load, manifested as abnormal current: A persistently high current value may indicate increased friction in the transmission system (e.g., insufficient lubrication or bearing damage). Drastic current fluctuations may reflect unstable meshing (e.g., tooth surface wear or installation misalignment). A sudden increase in current during startup or at low speed may indicate worm gear jamming or overload risk.

[0027] The wear condition between worm gears and worms can be analyzed using known friction and wear testing machines. Friction and wear testing machines, also known as friction testing machines or wear testing machines, are devices used to test the performance of materials or products under friction and wear conditions. They are mainly used for evaluating the anti-wear performance of lubricating oils, greases, and metal materials.

[0028] Besides a dedicated friction and wear testing machine, preliminary judgment can also be made through the following methods: 1. Check transmission efficiency: If the efficiency drops significantly (e.g., below 80% of the original value), it may indicate that wear has affected the transmission performance.

[0029] 2. Monitor operating noise and vibration: Abnormal noise or increased vibration may be a sign of uneven wear or damage to the tooth surface.

[0030] 3. Direct visual inspection or measurement tool inspection: After disassembly, check whether there is adhesive residue, pitting or obvious grooves on the tooth surface, and use tools such as tooth thickness calipers to measure the amount of wear (if the tooth thickness is reduced by more than 10%~15%, be alert).

[0031] The high-torque durability testing machine for worm gear grease provided by this invention has at least three worms spaced axially along the output shaft 3 of the motor 2, at least three worm wheels corresponding to the at least three worms, a grease injection mechanism, and a current detection device. Therefore, during testing, the grease to be tested can be output to the worms through the grease injection mechanism, the motor 2 is started, and this time point is recorded. When the worm and worm wheel are engaged in transmission, the grease between the worm and worm wheel gradually dries and hardens over time, causing a sharp increase in the transmission resistance between the worm and worm wheel, and even stalling. At this time, the current through the motor 2 will increase rapidly. The current detection device obtains the time point at which the current of the motor 2 increases rapidly. This time point is the same as when the motor 2 starts. The duration between time points can be used as a basis for judging the durability of grease. The motor 2 has an output shaft 3 that can output the required high torque, so the durability of the grease under test can be accurately tested during the high torque transmission process of the worm gear. In addition, since the radii of each worm are different, the durability of the grease can be measured simultaneously under the working conditions of at least three worm sizes. Furthermore, each worm wheel can engage or disengage with the corresponding worm, and each worm wheel can also engage or disengage with its adjacent worm wheel. When one worm wheel engages with the corresponding worm, by selectively engaging other worm wheels (equivalent to increasing or decreasing the load on the worm gear transmission mechanism), the durability of the grease under different load modes can be tested.

[0032] Overall, this high-torque durability testing machine for worm gear grease can objectively, accurately, and repeatably test the durability performance of grease between worm gears, providing reliable data support for grease formulation development, quality inspection, and selection in engineering applications, and helping to fundamentally avoid equipment failures caused by grease failure.

[0033] Furthermore, this application preferably has at least three worm gears detachably connected to the output shaft 3, thereby facilitating the testing of the high torque durability of grease for worm gears with different structural materials and surfaces.

[0034] According to one embodiment of this application, at least three worm gears include a first worm 6, a second worm 7, and a third worm 8 arranged sequentially along the axial direction of the output shaft 3, with the radii of the first worm 6, the second worm 7, and the third worm 8 increasing sequentially. The worm gear assembly also includes a first moving shaft 9, a second moving shaft 10, and a third moving shaft 11. The first moving shaft 9 is movably and lockably mounted on the equipment base 1, the second moving shaft 10 is movably and lockably mounted on the equipment base 1, and the third moving shaft 11 is movably and lockably mounted on the equipment base 1. The at least three worm gears include a first worm gear 12 corresponding to the first worm 6, a second worm gear 13 corresponding to the second worm 7, and a third worm gear 14 corresponding to the third worm 8. The first worm gear 12 is rotatably loosely fitted on the first moving shaft 9, and the second worm gear 13 is rotatably loosely fitted on the second moving shaft 9. On 10, the third worm gear 14 is rotatably mounted on the third moving shaft 11. The first moving shaft 9 can move to different positions to engage or disengage the first worm gear 12 with the first worm 6 and with the second worm gear 13. The second moving shaft 10 can move to different positions to engage or disengage the second worm gear 13 with the second worm 7, the first worm 6, and the third worm gear 14. The third moving shaft 11 can move to different positions to engage or disengage the third worm gear 14 with the third worm 8 and with the second worm gear 13. If one of the first worm gear 12, the second worm 7, and the third worm gear 14 is engaged with the corresponding worm, and the other two worm gears are engaged with that worm gear, then the worm gear engaged with that worm gear should not be engaged with the corresponding worm. The positional changes of each worm gear can be referenced. Figures 7 to 8 The three engagement states shown are, for example, Figure 7 The meshing state shown is as follows: the first worm gear 12 meshes with the first worm 7, the second worm gear 13 meshes with the second worm 7, and the third worm gear 14 meshes with the third worm 8, while the first worm gear 12, the second worm gear 13, and the third worm gear 14 do not mesh with each other; Figure 8 The meshing state shown is as follows: when the second worm wheel 13 meshes with the second worm 7, and both the first worm wheel 12 and the third worm wheel 14 mesh with the second worm wheel 13, then the first worm wheel 12 is separated from the first worm 6, and the third worm wheel 14 is separated from the third worm 8. Figure 9 The meshing state shown is as follows: the first worm gear 12 meshes with the first worm 7, the first worm gear 12, the second worm gear 13, and the third worm gear 14 mesh sequentially, and the second worm gear 13 is disengaged from the second worm 7, and the third worm gear 14 is disengaged from the third worm 8. It is understood that the high-torque durability testing machine for worm gear and worm grease provided in this application is not limited to... Figures 7 to 9 The three engagement states are shown.

[0035] According to one embodiment of this application, stop plates 15 are respectively provided on the first moving shaft 9, the second moving shaft 10, and the third moving shaft 11. The first worm gear 12, the second worm gear 13, and the third worm gear 14 are respectively supported on the stop plates 15 on the first moving shaft 9, the second moving shaft 10, and the third moving shaft 11. Specifically, the first moving shaft 9, the second moving shaft 10, and the third moving shaft 11 are all arranged in a vertical direction. Preferably, the axial end faces of the first worm gear 12, the second worm gear 13, and the third worm gear 14 can be provided with a fixing structure (e.g., a socket). When the first worm gear 12, the second worm gear 13, and the third worm gear 14 are supported on the corresponding stop plates 15, the required number of counterweight rings can also be fixed by the fixing structure, further improving the durability test of the worm gear grease high torque durability testing machine for grease under different load modes.

[0036] According to one embodiment of this application, a guide platform 100 is provided on the equipment base 1. The guide platform 100 is spaced apart from the equipment base 1 and is connected above the equipment base 1 by a support column. The guide platform 100 is provided with a first arc guide groove 17 and a second arc guide groove 18 that are connected to each other. The lower ends of the first moving shaft 9, the second moving shaft 10 and the third moving shaft 11 are all movable and limited in the first arc guide groove 17 and the second arc guide groove 18.

[0037] According to a specific embodiment of this application, a limiting disk 16 is coaxially provided at the lower end of each of the first moving shaft 9, the second moving shaft 10, and the third moving shaft 11. The limiting disk 16 is movable and limited in the first arc guide groove 17 and the second arc guide groove 18. The radius of the limiting disk 16 of each of the first moving shaft 9, the second moving shaft 10, and the third moving shaft 11 is larger than the radius of the corresponding moving shaft. The groove walls of the first arc guide groove 17 and the second arc guide groove 18 each include a vertical plate 19 and a horizontal plate 20 extending from the middle of the corresponding first arc guide groove 17 and the second arc guide groove 18 on the vertical plate 19. The side of the limiting disk 16 is limited between the opposing vertical plates 19, and the upper surface of the limiting disk 16 is limited below the respective horizontal plate 20 of the opposing vertical plates 19.

[0038] According to one embodiment of this application, the guide table 100 is provided with a first arc-shaped extension channel 101 and a second arc-shaped extension channel 102 that are interconnected. The arc-shaped extension channel 101 has the same arc trajectory as the first arc-shaped guide groove 17, and the arc-shaped extension channel 102 has the same arc trajectory as the second arc-shaped guide groove 18. A first drive rod 21 is provided at the lower end of the first moving shaft 9, a second drive rod 22 is provided at the lower end of the second moving shaft 10, and a third drive rod 23 is provided at the lower end of the third moving shaft 11. The first drive rod 21, the second drive rod 22, and the third drive rod 23 all pass through the first arc-shaped extension channel 101. The guide platform 100 extends downward through the second arc-shaped extension channel 102, thereby facilitating the movement of the first drive rod 21, the second drive rod 22, and the third drive rod 23 along the first arc-shaped extension channel 101 and the second arc-shaped extension channel 102 from below the guide platform 100. This drives the first moving shaft 9, the second moving shaft 10, and the third moving shaft 11 to move along the first arc-shaped guide groove 17 and the second arc-shaped guide groove 18. The movement of the first drive rod 21, the second drive rod 22, and the third drive rod 23 along the first arc-shaped extension channel 101 and the second arc-shaped extension channel 102 can be done manually or automatically by the equipment.

[0039] According to one embodiment of this application, the first drive rod 21, the second drive rod 22, and the third drive rod 23 are manually driven to move along the first arc-shaped extension channel 101 and the second arc-shaped extension channel 102. Specifically, each of the first drive rod 21, the second drive rod 22, and the third drive rod 23 has a threaded rod portion on its downward extension section to the guide platform 100, and a locking nut 24 is installed on the threaded rod portion. When the first drive rod 21, the second drive rod 22, and the third drive rod 23 are manually moved to the desired position along the first arc-shaped extension channel 101 and the second arc-shaped extension channel 102, the locking nut 24 can be tightened to press the lower surface of the guide platform 100, thereby locking and fixing the first drive rod 21, the second drive rod 22, and the third drive rod 23, and further locking and fixing the first moving shaft 9, the second moving shaft 10, and the third moving shaft 11.

[0040] According to another embodiment of this application, the first drive rod 21, the second drive rod 22, and the third drive rod 23 are moved along the first arc-shaped extension channel 101 and the second arc-shaped extension channel 102 by electric devices. Specifically, the equipment base 1 is provided with a first electrically controlled linear drive mechanism 25, a second electrically controlled linear drive mechanism 26, and a third electrically controlled linear drive mechanism 27 arranged sequentially from top to bottom at intervals. The linear drive direction of each of the first electrically controlled linear drive mechanism 25, the second electrically controlled linear drive mechanism 26, and the third electrically controlled linear drive mechanism 27 is perpendicular to the first arc-shaped extension channel 101 and the second arc-shaped extension channel 102. The output shaft 3 of motor 2 is parallel. A first electrically controlled linear drive mechanism 25 is connected to a first fork arm 28 to drive the first fork arm 28 to move along the output shaft 3 of motor 2. A second electrically controlled linear drive mechanism 26 is connected to a second fork arm 29 to drive the second fork arm 29 to move along the output shaft 3 of motor 2. A third electrically controlled linear drive mechanism 27 is connected to a third fork arm 30 to drive the third fork arm 30 to move along the output shaft 3 of motor 2. The portion of the first drive rod 21 extending downwards from the guide platform 100 is limited axially by the first fork arm 28 along the output shaft 3 of motor 2. The first fork arm 28 can drive the first drive rod 21 to move along the axial direction of the output shaft 3 of the motor 2. The first drive rod 21 is not limited by the first fork arm 28 in the direction perpendicular to the axial direction of the output shaft 3 of the motor 2, but can move in the first fork arm 28 in a direction perpendicular to the first fork arm 28. Thus, the first fork arm 28 can drive the first drive rod 21 to move along an arc trajectory in the first arc-shaped extension channel 101 and the second arc-shaped extension channel 102. The section of the second drive rod 22 that extends downward out of the guide table 100 is on the axial direction of the output shaft 3 of the motor 2. The section of the third drive rod 23 extending downward from the guide platform 100 is limited upward by the second fork arm 29 and axially by the third fork arm 30 on the output shaft 3 of the motor 2. The principle by which the second fork arm 29 and the third fork arm 30 drive the second drive rod 22 and the third drive rod 23 to move along an arc trajectory in the first arc extension channel 101 and the second arc extension channel 102 can be referred to the principle by which the first fork arm 28 drives the first drive rod 21 to move along an arc trajectory in the first arc extension channel 101 and the second arc extension channel 102, which will not be repeated here.

[0041] Specifically, the first electrically controlled linear drive mechanism 25, the second electrically controlled linear drive mechanism 26, and the third electrically controlled linear drive mechanism 27 can all be electrically controlled guide rails with sliders. The slider corresponding to the first electrically controlled linear drive mechanism 25 is connected to the first fork arm 28, the slider corresponding to the second electrically controlled linear drive mechanism 26 is connected to the second fork arm 29, and the slider corresponding to the third electrically controlled linear drive mechanism 27 is connected to the third fork arm 30.

[0042] According to one embodiment of this application, the grease injection mechanism includes a transverse drive mechanism 31, a lifting drive mechanism 32 disposed on the transverse drive mechanism 31, and a grease outlet container 200 disposed on the lifting drive mechanism 32. The lower end of the grease outlet container 200 has a grease nozzle 201, and the upper end of the grease outlet container 200 has a grease inlet pipe 202. The grease inlet pipe 202 can be connected to a grease output source through a hose. Preferably, the lifting drive mechanism 32 can have multiple grease outlet containers 200 to receive different types of grease. Of course, the same grease outlet container 200 can also be used to perform durability tests on different types of grease by receiving different types of grease. The transverse drive mechanism 31 can be an electrically controlled guide rail, and the lifting drive mechanism 32 can also be a vertical electrically controlled guide rail.

[0043] In addition, the worm gear grease high torque durability testing machine includes a control console 33 mounted on the equipment base 1. The control console 33 is equipped with a display screen 34 and a control unit (with a main circuit board containing a microprocessor). The display screen 34 is connected to the control unit via signals. The control unit is electrically connected to the motor 2, the current detection device, the first electrically controlled linear drive mechanism 25, the second electrically controlled linear drive mechanism 26, and the third electrically controlled linear drive mechanism 27. The display screen 34 facilitates the display of parameters such as the current information of the motor 2 detected by the current detection device and the running time of the motor 2. The worm gear grease high torque durability testing machine may also include a torque detection device for the output shaft 3 of the motor 2, each worm gear and worm, and the torque detection device is connected to the control unit via signals.

[0044] It should be noted that the above embodiments only illustrate preferred embodiments of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting this application. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of this application, such as combining different features in various embodiments, and these should all fall within the protection scope of this application.

Claims

1. A high-torque durability testing machine for worm gear grease, characterized in that, The worm gear lubricating grease high-torque durability testing machine includes: A device base and a motor mounted on the device base, the motor having an output shaft; The worm gear assembly includes at least three worms spaced apart along the axial direction of the output shaft, each worm having a different radius; The worm gear assembly includes at least three worm wheels corresponding one-to-one with the at least three worms. Each worm wheel is rotatably and movably mounted on the equipment base. Each worm wheel can engage or disengage with the corresponding worm, and each worm wheel can also engage or disengage with its adjacent worm wheel. A grease injection mechanism is provided on the equipment base for discharging grease to each of the worm gears; A current detection device is electrically connected to the motor.

2. The high-torque durability testing machine for worm gear grease according to claim 1, characterized in that, The at least three worm gears include a first worm, a second worm, and a third worm arranged sequentially along the axial direction of the output shaft. The worm gear assembly further includes a first moving shaft, a second moving shaft, and a third moving shaft. The first moving shaft is movably and lockably mounted on the equipment base. The second moving shaft is movably and lockably mounted on the equipment base. The third moving shaft is movably and lockably mounted on the equipment base. The at least three worm gears include a first worm gear corresponding to the first worm, a second worm gear corresponding to the second worm, and a third worm gear corresponding to the third worm. The first worm gear is rotatably loosely fitted on the first moving shaft. On the moving shaft, the second worm gear is rotatably loosely fitted on the second moving shaft, and the third worm gear is rotatably loosely fitted on the third moving shaft. The first moving shaft can move to different positions to drive the first worm gear to engage or disengage with the first worm and to engage or disengage with the second worm gear; the second moving shaft can move to different positions to drive the second worm gear to engage or disengage with the second worm, to engage or disengage with the first worm, and to engage or disengage with the third worm gear; the third moving shaft can move to different positions to drive the third worm gear to engage or disengage with the third worm and to engage or disengage with the second worm gear.

3. The high-torque durability testing machine for worm gear grease according to claim 2, characterized in that, Stop plates are respectively provided on the first moving shaft, the second moving shaft and the third moving shaft, and the first worm gear, the second worm gear and the third worm gear are respectively supported on the stop plates on the first moving shaft, the second moving shaft and the third moving shaft.

4. The high-torque durability testing machine for worm gear grease according to claim 2, characterized in that, A guide platform is provided on the equipment base, and the guide platform is spaced apart from the equipment base. A first arc guide groove and a second arc guide groove are provided on the guide platform, which are connected to each other. The lower ends of the first moving shaft, the second moving shaft and the third moving shaft are all movable and limited in the first arc guide groove and the second arc guide groove.

5. The high-torque durability testing machine for worm gear grease according to claim 4, characterized in that, Each of the first, second, and third moving shafts has a limiting disk coaxially disposed at its lower end. The limiting disk is movable and limited within the first and second arc guide grooves. The radius of the limiting disk of each of the first, second, and third moving shafts is greater than the radius of the corresponding moving shaft.

6. The high-torque durability testing machine for worm gear grease according to claim 4, characterized in that, The guide platform is provided with a first arc-shaped extension channel and a second arc-shaped extension channel that are connected to each other. The first arc-shaped extension channel has the same arc trajectory as the first arc-shaped guide groove, and the second arc-shaped extension channel has the same arc trajectory as the second arc-shaped guide groove. A first drive rod is provided at the lower end of the first moving shaft, a second drive rod is provided at the lower end of the second moving shaft, and a third drive rod is provided at the lower end of the third moving shaft. The first drive rod, the second drive rod, and the third drive rod all extend downward through the first arc-shaped extension channel and the second arc-shaped extension channel and extend downward through the guide platform.

7. The high-torque durability testing machine for worm gear grease according to claim 6, characterized in that, Each of the first drive rod, the second drive rod, and the third drive rod has a threaded rod portion extending downwards from the guide platform, and a locking nut is installed on the threaded rod portion.

8. The high-torque durability testing machine for worm gear grease according to claim 6, characterized in that, The equipment base is provided with a first electrically controlled linear drive mechanism, a second electrically controlled linear drive mechanism, and a third electrically controlled linear drive mechanism arranged sequentially from top to bottom at intervals. The linear drive direction of each of the three electrically controlled linear drive mechanisms is parallel to the output shaft of the motor. The first electrically controlled linear drive mechanism is connected to a first fork arm to drive the first fork arm to move along the output shaft of the motor. The second electrically controlled linear drive mechanism is connected to a second fork arm to drive the second fork arm to move along the output shaft of the motor. The third electrically controlled linear drive mechanism is connected to a third fork arm to drive the third fork arm to move along the output shaft of the motor. The portion of the first drive rod extending downward from the guide platform is limited in the axial direction of the output shaft of the motor by the first fork arm. The portion of the second drive rod extending downward from the guide platform is limited in the axial direction of the output shaft of the motor by the second fork arm. The portion of the third drive rod extending downward from the guide platform is limited in the axial direction of the output shaft of the motor by the third fork arm.

9. The high-torque durability testing machine for worm gear grease according to any one of claims 1 to 8, characterized in that, The grease injection mechanism includes a lateral drive mechanism, a lifting drive mechanism disposed on the lateral drive mechanism, and a grease outlet container disposed on the lifting drive mechanism.

10. The high-torque durability testing machine for worm gear grease according to claim 8, characterized in that, The worm gear grease high torque durability testing machine includes a control console mounted on the equipment base, a display screen mounted on the control console, and a control unit in the control console. The control unit is electrically connected to the motor, current detection device, first electrically controlled linear drive mechanism, second electrically controlled linear drive mechanism, and third electrically controlled linear drive mechanism.

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