An automated experimental device for investigating the influence of multiple variables on mechanical efficiency

Abstract

The application discloses an automatic experimental device for exploring influence of multivariables on mechanical efficiency, belongs to the technical field of test detection, and comprises a test seat, a driving motor, a torque sensor and a magnetic powder brake instrument. Multiple adjustable test benches are arranged on the test seat. The driving motor, the torque sensor and the magnetic powder brake instrument are arranged on the multiple adjustable test benches. A temperature difference detection unit, a shaft pressure load test unit and a centrifugal force detection unit are arranged on the multiple adjustable test benches. An inner conversion ring is rotationally arranged on the outer side wall of the central turntable. An outer conversion ring is rotationally arranged on the outer side wall of the inner conversion ring. The multiple adjustable test benches are arranged to bear each component of the temperature difference detection unit, the shaft pressure load test unit and the centrifugal force detection unit. According to the requirements in the actual detection process, multiple detection units can be flexibly adjusted to carry out independent or combined experiments, so that the effect of exploring the influence of multivariables on mechanical efficiency is realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of experimental detection, and in particular to an automatic experimental device for exploring the influence of multiple variables on mechanical efficiency. BACKGROUND

[0002] Mechanical efficiency is one of the important indicators reflecting the performance of the mechanical performance, the total work is equal to the sum of useful work and additional work, so the useful work only accounts for a part of the total work; Obviously, the greater the proportion of useful work, the higher the utilization rate of the total work of the machine, and the better the performance of the machine.

[0003] The reducer is a device used in cooperation with the motor, and the mechanical efficiency of the reducer has a huge impact on the driving force of the motor, so the reducer often needs to be tested during the research and development process to ensure that its mechanical efficiency can meet the requirements of mass production. The current test process for mechanical efficiency mainly considers the influence of lubrication on the friction of the gear set, and does not consider the variables of temperature, speed and the weight of the reduction shaft. In the actual transmission process, the temperature difference caused by the high transmission friction between the external temperature and the gear shaft during high-speed rotation of the gear is extremely large. The thermal expansion and contraction caused by the temperature difference will increase the friction fastening force, which has a huge impact on the transmission efficiency. When the gear rotates at high speed, it will generate a large centrifugal force, causing the detector to vibrate, which is also a key factor affecting the transmission efficiency. In addition, the distance of the transmission shaft connected to the reducer cannot be controlled according to the installation position of the equipment, which causes the length of the reduction shaft to have a great impact on the transmission efficiency. Based on the above, the present application proposes an automatic experimental device for exploring the influence of multiple variables on mechanical efficiency. SUMMARY

[0004] The purpose of the present application is to solve the problems in the prior art and to provide an automatic experimental device for exploring the influence of multiple variables on mechanical efficiency.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0006] An automatic experimental device for exploring the influence of multiple variables on mechanical efficiency, comprising a test seat, a drive motor, a torque sensor and a magnetic powder brake instrument, the test seat is provided with a multiple adjustable test bench, the drive motor, the torque sensor and the magnetic powder brake instrument are all arranged on the multiple adjustable test bench, and the multiple adjustable test bench is provided with a temperature difference detection unit, a shaft pressure load test unit and a centrifugal force detection unit.

[0007] The multiple adjustable test bench comprises a central rotating disc rotatingly arranged on the test seat, an inner conversion ring rotatingly arranged on the outer side wall of the central rotating disc, and an outer conversion ring rotatingly arranged on the outer side wall of the inner conversion ring.

[0008] The temperature difference detection unit is composed of a cover refrigeration heat exchange element and a coil heating element, the cover refrigeration heat exchange element is internally provided with a refrigeration pipe for cooling the gear reducer cover body, and the coil heating element comprises a mounting cover body connected through an adjusting slide and a heating coil arranged in the mounting cover body and used for heating the rotating shaft.

[0009] The shaft pressure load test unit comprises a weight sleeve magnetic ring body and a magnetic attraction support used in cooperation with the weight sleeve magnetic ring body, the magnetic attraction support is connected with a magnetic attraction plate through a rotating adjusting part, and the magnetic attraction plate is magnetically attracted to the weight sleeve magnetic ring body.

[0010] The centrifugal force detection unit comprises a fastening mounting seat, a clamping mounting frame is arranged on the fastening mounting seat, the clamping mounting frame is connected with an extension rod through a rotating connecting part, and an amplification vibration effect sensing pendulum ball is arranged at the end of the extension rod.

[0011] Preferably, a conversion transverse groove is formed in the multi-adjustable test bench, a placing seat is arranged at the bottom of the cover refrigeration heat exchange element, and a transverse sliding seat matched with the conversion transverse groove is arranged at the bottom of the placing seat.

[0012] Preferably, the adjusting slide comprises a conversion sliding seat connected with the mounting cover body, a conversion groove in the shape of T is formed in the inner conversion ring, and the conversion sliding seat slides in the conversion groove to adjust the position.

[0013] Preferably, the magnetic attraction support is arranged in the shape of a ring and is fixedly connected with the inner conversion ring through a supporting rod.

[0014] The rotating adjusting part comprises an adjusting block sleeved on the magnetic attraction support, a fastening bolt is arranged on the adjusting block, a connecting block is fixedly arranged at the bottom of the adjusting block, and the connecting block is connected with the magnetic attraction plate through a screw thread connected adjusting column.

[0015] Preferably, a connecting port is formed in the fastening mounting seat, a connecting sliding block is connected with the inner wall of the connecting port through a screw thread rotating column, and the clamping mounting frame is fixedly connected with the two connecting sliding blocks.

[0016] Preferably, a U-shaped vibration plate is arranged on the top of the clamping mounting frame through a sliding shaft.

[0017] Preferably, the rotating connecting part comprises a connecting seat fixedly arranged on the clamping mounting frame, a rotating shaft is arranged on the connecting seat, and a conversion connecting port matched with the rotating shaft is formed in the extension rod.

[0018] Preferably, a telescopic plate is arranged at the bottom of the magnetic powder brake instrument, and a telescopic sliding groove matched with the telescopic plate is formed in the outer conversion ring.

[0019] Compared with the prior art, the present application has the following advantages:

[0020] 1、The present application sets up multiple adjustable test bench to bear each part of temperature difference detection unit, shaft pressure load test unit and centrifugal force detection unit, can flexibly adjust multiple detection units to carry out independent or combined experiment according to the requirement in actual detection process, thereby realizing the effect of exploring the influence of multiple variables on mechanical efficiency.

[0021] 2、The present application is aimed at the requirement of mechanical efficiency detection, and the influence of error between search gear and reduction shaft in lubricating oil on mechanical efficiency is explored by temperature difference detection unit;The influence of weight load of reducer output shaft caused by distance on mechanical efficiency is explored by shaft pressure load test unit, and the influence of vibration on mechanical efficiency of reducer can be directly obtained by centrifugal force detection unit. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The test state diagram of the automatic experimental device for exploring the influence of multiple variables on mechanical efficiency is provided in the present application Figure 1 ;

[0023] Figure 2 The test state diagram of the automatic experimental device for exploring the influence of multiple variables on mechanical efficiency is provided in the present application Figure 2 ;

[0024] Figure 3 The test state diagram of the automatic experimental device for exploring the influence of multiple variables on mechanical efficiency is provided in the present application Figure 3 ;

[0025] Figure 4 The structure diagram of the coil heating element in the automatic experimental device for exploring the influence of multiple variables on mechanical efficiency is provided in the present application Figure 3

[0026] Figure 5 The structure diagram of the centrifugal force detection unit in the automatic experimental device for exploring the influence of multiple variables on mechanical efficiency is provided in the present application

[0027] Figure 6 The structure diagram of the shaft pressure load test unit in the automatic experimental device for exploring the influence of multiple variables on mechanical efficiency is provided in the present application

[0028] Figure 7 The structure diagram of the coil heating element in the automatic experimental device for exploring the influence of multiple variables on mechanical efficiency is provided in the present application

[0029] ​In the diagram: 1. Test stand; 2. Magnetic powder brake; 3. Central turntable; 4. Inner conversion ring; 5. Outer conversion ring; 6. Outer cover refrigeration heat exchanger; 7. Mounting cover; 8. Heating coil; 9. Load-bearing magnetic ring body; 10. Magnetic suction bracket; 11. Magnetic suction plate; 12. Fastening mounting seat; 13. Clamping mounting frame; 14. Telescopic rod; 15. Induction pendulum; 16. Transverse conversion groove; 17. Placement seat; 18. Transverse slide; 19. Conversion slide; 20. Conversion groove; 21. Support rod; 22. Adjusting block; 23. Fastening bolt; 24. Connecting block; 25. Adjusting column; 26. Connecting slider; 27. Sliding shaft; 28. U-shaped vibration plate; 29. ​​Connecting seat; 30. Telescopic plate. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0031] Example, refer to Figures 1-7 An automated experimental device for investigating the effects of multiple variables on mechanical efficiency includes an experimental stand 1, a drive motor, a torque sensor, and a magnetic particle brake 2. The experimental stand 1 is equipped with a multi-adjustable experimental platform.

[0032] It should be noted that the drive motor, torque sensor, and magnetic powder brake 2 are existing technologies and will not be described in detail here.

[0033] Furthermore, the bottom of the magnetic powder brake 2 is provided with a telescopic plate 30, and the outer conversion ring 5 is provided with a telescopic groove that is compatible with the telescopic plate 30.

[0034] It should be noted that the magnetic powder brake 2 is mounted on the telescopic plate 30. When in use, the specific position of the magnetic powder brake 2 can be controlled according to the length of the reducer shaft to be detected, thereby adapting to the use of reducer shafts of different lengths.

[0035] The drive motor, torque sensor and magnetic powder brake 2 are all set on the multi-adjustable test bench, which is equipped with a temperature difference detection unit, an axial pressure load testing unit and a centrifugal force detection unit.

[0036] The temperature difference detection unit and the centrifugal force detection unit are adjusted via a conversion slide on a multi-adjustable test bench.

[0037] The multiple adjustable test bench comprises a central rotating disc 3 arranged on a test seat 1, an inner rotating conversion ring 4 arranged on the outer wall of the central rotating disc 3, and an outer rotating conversion ring 5 arranged on the outer wall of the inner rotating conversion ring 4;

[0038] The arrangement of the inner rotating conversion ring 4 and the outer rotating conversion ring 5 can meet the rotating adjustment position, so as to realize the adjustment of each test element arranged thereon, and realize the selection of the corresponding test element according to different detection tests, wherein the test element comprises one or more of a temperature difference detection unit, a shaft load test unit and a centrifugal force detection unit.

[0039] The temperature difference detection unit is composed of a casing refrigeration heat exchange element 6 and a coil heating element. The heating principle of the electromagnetic heating coil is based on the principle of electromagnetic induction. When the coil in the electromagnetic heating coil passes through the alternating current, the alternating magnetic field is generated. This magnetic field will make the internal eddy current of the heated metal, thereby heating the metal;

[0040] The casing refrigeration heat exchange element 6 is internally provided with a refrigeration pipe for cooling the gear reducer cover, and the coil heating element comprises a mounting cover 7 connected by an adjusting sliding element and a heating coil 8 arranged in the mounting cover 7. The heating coil 8 is used for heating the rotating shaft.

[0041] The refrigeration pipe arranged in the casing refrigeration heat exchange element 6 can adopt cold water circulation or a refrigeration device to provide refrigerant, so as to realize the cooling effect of the reducer cover.

[0042] Further, a conversion transverse groove 16 is arranged on the test bench, a placing seat 17 is arranged at the bottom of the casing refrigeration heat exchange element 6, and a transverse sliding seat 18 matched with the conversion transverse groove 16 is arranged at the bottom of the placing seat 17.

[0043] The adjusting sliding element comprises a conversion sliding seat 19 connected with the mounting cover 7, and a conversion groove 20 in the shape of "T" is arranged on the inner rotating conversion ring 4. The conversion sliding seat 19 is arranged in the conversion groove 20 and can be adjusted.

[0044] The above further effect is that the position of the casing refrigeration heat exchange element 6 and the coil heating element can be adjusted, so as to ensure that the casing refrigeration heat exchange element 6 and the coil heating element can be used in cooperation with the reducer and the reduction shaft, and the detection test effect can be realized, and the temperature difference detection unit can also be used.

[0045] The shaft load test unit comprises a magnetic ring body 9 and a magnetic attraction support 10 used in cooperation with the magnetic ring body 9, the magnetic attraction support 10 is connected with a magnetic attraction plate 11 through a rotating adjusting element, and the magnetic attraction plate 11 is magnetically attracted to the magnetic ring body 9.

[0046] Further, the magnetic attraction support 10 is arranged in the shape of a ring and is fixedly connected with the inner rotating conversion ring 4 through a supporting rod 21.

[0047] The rotating adjustment component includes an adjustment block 22 sleeved on the magnetic support 10, a fastening bolt 23 on the adjustment block 22, and a connecting block 24 fixedly installed at the bottom of the adjustment block 22. The connecting block 24 is connected to the magnetic plate 11 through a threaded adjustment column 25.

[0048] The adjusting column 25 is threadedly connected to the connecting block 24 and rotatably connected to the magnetic suction plate 11. This can change the distance between the magnetic suction plate 11 and the load-bearing magnetic ring 9, thereby changing the magnetic attraction force on the load-bearing magnetic ring 9. This changes the pressure load on the deceleration shaft connected to the load-bearing magnetic ring 9, achieving the effect of adjusting the pressure for detection.

[0049] When the adjusting block 22 is at the bottom of the load-bearing magnetic ring 9, it generates a downward suction force on the load-bearing magnetic ring 9, thereby increasing the self-weight pressure on the reduction shaft. When the adjusting block 22 is at the top of the load-bearing magnetic ring 9, it generates an upward suction force on the load-bearing magnetic ring 9, thereby reducing the self-weight pressure on the reduction shaft.

[0050] The centrifugal force detection unit includes a fastening mounting base 12. Furthermore, the fastening mounting base 12 has a connection port, and the inner wall of the connection port is connected to a connecting slider 26 by a threaded column. The clamping mounting bracket 13 is fixedly connected to the two connecting sliders 26.

[0051] By setting the threaded column, the connecting slider 26 can be fastened, so that the clamping mounting bracket 13 and the installed reducer can be fastened together, so as to ensure that the vibration of the reducer can be effectively transmitted to the clamping mounting bracket 13.

[0052] A clamping mounting bracket 13 is provided on the fastening mounting base 12. The clamping mounting bracket 13 is connected to a telescopic rod 14 via a rotating connector. A sensing pendulum ball 15 that amplifies vibration effect is provided at the end of the telescopic rod 14.

[0053] It is worth noting that the telescopic rod 14 amplifies the vibration, making it more clearly visible during use.

[0054] Furthermore, a U-shaped vibration plate 28 is provided on the top of the clamping mounting frame 13 via a sliding shaft 27, and the rotating connector includes a connecting seat 29 fixedly mounted on the clamping mounting frame 13, a rotating shaft is provided on the connecting seat 29, and a conversion connection port adapted to the rotating shaft is provided on the telescopic rod 14.

[0055] A further advantage of the above is that the inductive pendulum 15 connected to the telescopic rod 14 can be switched between horizontal and vertical positions by rotating the connecting piece, thereby detecting vibrations in different directions.

[0056] The application is used when the mechanical efficiency transmission of the speed reducer needs to be tested and detected, corresponding detection equipment is selected according to different detection requirements, and the application specifically comprises the following:

[0057] Temperature difference test: the speed reducer is placed on the placing seat 17, the input shaft of the speed reducer is connected with the driving motor, the output shaft is connected with the magnetic powder brake instrument 2, the torque sensor is arranged on the input shaft and the output shaft, the transmission data between the input shaft and the output shaft is read, and in the process, the negative coil heating piece is sleeved on the position close to the speed reducer of the input shaft and the output shaft, in the test, the outer cover refrigeration heat exchange piece 6 arranged on the placing seat 17 is used to cool the gear in the speed reducer, the heating coil 8 arranged in the coil heating piece is used to heat the input shaft and the output shaft of the speed reducer, the temperature difference between the gear and the speed reducer shaft is expanded, the influence of the temperature difference between the speed reducer gear and the speed reducer shaft caused by the oil injection type lubricating oil cooling mode on the mechanical efficiency is explored, and data is obtained;

[0058] Shaft load test: in the experiment, the output shaft of the speed reducer is sleeved with the magnetic ring body 9, the magnetic attraction support 10 is transferred to the magnetic ring body 9, the position of the magnetic attraction plate 11 arranged on the magnetic attraction support 10 is controlled and adjusted, when the load is increased, the magnetic attraction plate 11 is installed at the bottom of the magnetic ring body 9 through the rotating adjusting piece, the magnetic attraction plate 11 applies downward magnetic attraction force to the magnetic ring body 9, so that the output shaft bears the load, and the size of the magnetic attraction force, i.e. the load, can be changed by changing the distance between the magnetic attraction plate 11 and the magnetic ring body 9, when the load needs to be reduced, the magnetic attraction plate 11 is installed at the top of the magnetic ring body 9 through the rotating adjusting piece, the magnetic attraction plate 11 generates upward magnetic attraction force to the magnetic ring body 9, thereby supporting the output shaft and reducing the load, so as to explore the influence of the weight of the output shaft caused by the length on the mechanical efficiency;

[0059] In the centrifugal force test, the speed reducer is installed on the fastening mounting seat 12 and firmly clamped by the clamping mounting frame 13, at this time, the telescopic rod 14 is extended outward to drive the inductive pendulum ball 15 to adjust the distance, in the rotation of the speed reducer, the gear set in the speed reducer will vibrate in the corresponding direction due to the centrifugal force, in the high-speed rotation process, the centrifugal force generated by the gear set will affect the stability of the speed reducer, at this time, the inductive pendulum ball 15 is used to amplify the vibration, so that the influence of the vibration on the mechanical efficiency of the speed reducer can be directly obtained;

[0060] The above test process can be performed simultaneously or individually, so as to explore the influence of multiple variables on the mechanical efficiency transmission.

[0061] The above merely describes preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art, according to the technical solution and inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. An automated experimental apparatus for investigating the effects of multiple variables on mechanical efficiency, comprising an experimental stand (1), a drive motor, a torque sensor, and a magnetic particle brake (2), characterized in that, The test stand (1) is equipped with a multi-adjustable test platform. The drive motor, torque sensor and magnetic powder brake (2) are all installed on the multi-adjustable test platform. The multi-adjustable test platform is equipped with a temperature difference detection unit, an axial pressure load testing unit and a centrifugal force detection unit. The multi-adjustable test bench includes a central turntable (3) rotatably mounted on the test base (1), an inner conversion ring (4) rotatably mounted on the outer wall of the central turntable (3), and an outer conversion ring (5) rotatably mounted on the outer wall of the inner conversion ring (4). The temperature difference detection unit consists of an outer cover cooling heat exchange component (6) and a coil heating component. The outer cover cooling heat exchange component (6) is provided with a cooling pipe for cooling the gear reducer cover. The coil heating component includes a mounting cover (7) connected by an adjusting sliding component and a heating coil (8) set in the mounting cover (7). The heating coil (8) is used to heat the rotating shaft. The axial load testing unit includes a load-bearing magnetic ring (9) and a magnetic support (10) used in conjunction with the load-bearing magnetic ring (9). The magnetic support (10) is connected to a magnetic plate (11) via a rotating adjustment component. The magnetic plate (11) is magnetically attracted to the load-bearing magnetic ring (9). The centrifugal force detection unit includes a fastening mounting base (12), on which a clamping mounting frame (13) is provided. The clamping mounting frame (13) is connected to a telescopic rod (14) via a rotating connector. The end of the telescopic rod (14) is provided with a sensing pendulum (15) that amplifies the vibration effect. The adjusting sliding component includes a conversion slide (19) connected to the mounting cover (7). The inner conversion ring (4) has a "T"-shaped conversion groove (20). The conversion slide (19) can adjust its position by sliding within the conversion groove (20). The magnetic bracket (10) is arranged in a ring shape and is fixedly connected to the inner conversion ring (4) by a support rod (21); The rotating adjustment component includes an adjustment block (22) sleeved on the magnetic support (10), a fastening bolt (23) is provided on the adjustment block (22), and a connecting block (24) is fixedly provided at the bottom of the adjustment block (22). The connecting block (24) is connected to the magnetic plate (11) through a threaded adjustment column (25).

2. The automated experimental apparatus for investigating the effects of multiple variables on mechanical efficiency according to claim 1, characterized in that, The multi-adjustable test bench is provided with a conversion transverse groove (16), and the bottom of the outer cover cooling heat exchanger (6) is provided with a placement seat (17), and the bottom of the placement seat (17) is provided with a transverse slide (18) adapted to the conversion transverse groove (16).

3. The automated experimental apparatus for investigating the effects of multiple variables on mechanical efficiency according to claim 1, characterized in that, The fastening mounting base (12) has a connection port, and the inner wall of the connection port is connected to a connecting slider (26) by a threaded column. The clamping mounting bracket (13) is fixedly connected to the two connecting sliders (26).

4. The automated experimental apparatus for investigating the effects of multiple variables on mechanical efficiency according to claim 1, characterized in that, The clamping mounting bracket (13) has a U-shaped vibration plate (28) on its top via a sliding shaft (27).

5. An automated experimental apparatus for investigating the effects of multiple variables on mechanical efficiency according to claim 1, characterized in that, The rotating connector includes a connecting seat (29) fixedly mounted on the clamping mounting frame (13), a rotating shaft is provided on the connecting seat (29), and a conversion connection port adapted to the rotating shaft is provided on the telescopic rod (14).

6. An automated experimental apparatus for investigating the effects of multiple variables on mechanical efficiency according to claim 1, characterized in that, The magnetic powder brake (2) is provided with a telescopic plate (30) at the bottom, and the outer conversion ring (5) is provided with a telescopic groove that is compatible with the telescopic plate (30).

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