CN111554171B

CN111554171B - Experiment table for relation between box structure size and speed reducer efficiency

Info

Publication number: CN111554171B
Application number: CN202010547792.XA
Authority: CN
Inventors: 孙虎儿
Original assignee: North University of China
Current assignee: North University of China
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2021-08-27
Anticipated expiration: 2040-06-16
Also published as: CN111554171A

Abstract

The invention discloses an experiment table for the relation between the structural size of a box body and the efficiency of a speed reducer, which comprises the speed reducer, a servo motor, a movable baffle, a baffle transmission mechanism, a guide piece, a torque sensor and a magnetic powder brake, wherein the speed reducer comprises the box body, an input shaft, an oil groove, a gear transmission mechanism and an output shaft which are arranged in the box body; the inner side walls of the box bodies positioned at two sides of the gear transmission mechanism are respectively provided with a movable baffle, the length of the movable baffle is the same as that of the inner side wall of the box body, the inner end of the guide piece extends into and is connected with the movable baffle, and the outer end of the guide piece is connected with a baffle transmission mechanism arranged outside the box body; the magnetic powder sensor, the torque sensor and the output shaft are connected in sequence. The device can change the factors such as the structural size of the box body, the rotating speed of the speed reducer, the load, the viscosity of lubricating oil and the like, and observe and measure the oil stirring loss, the loss of the rolling bearing, the gear meshing efficiency and the efficiency of the input shaft and the output shaft of the speed reducer under different conditions.

Description

Experiment table for relation between box structure size and speed reducer efficiency

Technical Field

The invention belongs to the field of experimental teaching equipment, and particularly relates to an experiment table for relation between box structure size and reducer efficiency.

Background

The mechanical efficiency is one of the comprehensive quality indexes of the speed reducer, and generally, the efficiency of the speed reducer can be determined by theoretical calculation. However, due to the many factors of influence, certain assumptions must be made in quantitative analysis, so that the theoretical results are only approximate and the practical significance as a determination value of the efficiency of the speed reducer is lost. The efficiency value of the retarder should be determined experimentally. In the prior art, the structural size of the box body of the speed reducer is generally fixed after production and processing, but if different structural sizes of the box body are needed, the box body needs to be replaced through a series of uncovering operations, and the structural size of the original box body is rarely changed.

Disclosure of Invention

The invention aims to provide a test bench for the relation between the structural size of a box body and the efficiency of a speed reducer, the test bench can change the structural size of the box body, the rotating speed of the speed reducer, the load and the viscosity of lubricating oil so as to observe and measure the efficiency of the speed reducer under different conditions, and has the advantages of simple structure and convenience in operation.

In order to achieve the above purpose, the solution of the invention is: the experiment table for the relation between the structural size of the box body and the efficiency of the speed reducer comprises the speed reducer, a servo motor, two movable baffles, a baffle transmission mechanism, two guide pieces, a torque sensor and a magnetic powder brake, wherein the speed reducer comprises the box body, and an input shaft, an oil groove, a gear transmission mechanism and an output shaft which are arranged in the box body; the inner side walls of the box body positioned on two sides of the gear transmission mechanism are respectively provided with a movable baffle, the length of the movable baffle is the same as that of the inner side wall of the box body, the box body is respectively provided with a guide hole at the position of each movable baffle, the inner end of each guide piece extends into and is connected with the movable baffle, and the outer ends of the two guide pieces are respectively connected with the baffle transmission mechanism arranged outside the box body; the torque sensor is connected with the output shaft, and the magnetic powder sensor is connected with the torque sensor.

Preferably, baffle drive mechanism includes a ball, two ball nuts, two connecting rods and step motor, step motor connects ball's one end, ball's thick stick body is half for orthodontic, half is anti-tooth, and an orthodontic position and anti-tooth position respectively cooperate installation ball nut, and two ball nuts respectively are through one the connecting rod is connected the guide.

Preferably, baffle drive mechanism still includes linear guide, two sliders and two mounting panels, linear guide parallel arrangement in one side of ball, one is cup jointed respectively at linear guide's both ends the slider, two ball nuts respectively with connect through two mounting panels between two sliders, the mounting panel with the connecting rod one-to-one is connected.

Preferably, this laboratory bench is equipped with servo motor support, torque sensor support and magnetic particle brake support, supplies servo motor, torque sensor and magnetic particle brake to place the installation respectively.

Preferably, the gear transmission mechanism comprises a pinion and a gearwheel which are engaged with each other, the pinion is used for the input shaft to penetrate and fix, and the gearwheel is used for the output shaft to penetrate and fix.

After the scheme is adopted, the invention has the beneficial effects that:

the efficiency of the speed reducer is related to factors such as the rotating speed, load, torque, viscosity of lubricating oil and the like of the speed reducer, the servo motor controls the rotating speed, the magnetic powder brake controls the loading, the torque sensor measures the torque of an input shaft and an output shaft, the lubricating oil is introduced into an oil groove, the lubricating oil can be replaced by the lubricating oil with different viscosities, the most important point is that the structural size of a box body of the speed reducer can be changed Bearing losses, gear mesh efficiency, and efficiency of the input and output shafts. The invention belongs to the field of experimental teaching equipment, is mainly used for teaching mechanical design, mechanical design basis and course design of mechanical professions and specialties, can also be used for training new staff of mechanical factories, and has wide application prospect.

Drawings

Fig. 1 is a schematic view of the overall structure of an embodiment of the present invention.

Description of reference numerals:

1. fixedly mounting a flat plate; 2. a servo motor; 3. a servo motor support; 4. a first coupling; 5. a first torque sensor; 6. a first guide member; 7. a first guide fixing member; 8. a second coupling; 9. an input shaft; 10. a pinion gear; 11. a speed reducer; 12. a second guide fixing member; 13. a second guide member; 14. a connecting rod; 15. a movable baffle; 16. mounting a plate; 17. a first bearing housing; 18. a first support base; 19. a first slider; 20. a ball nut; 21. a ball screw; 22. a linear guide rail; 23. a bull gear; 24. an output shaft; 25. a ball nut; 26. a second slider; 27. mounting a plate; 28. a connecting rod; 29. a second support seat; 30. a second bearing housing; 31. a third coupling; 32. a stepper motor support; 33. a stepping motor; 34. a movable baffle; 35. a fourth coupling; 36. a second torque sensor; 37. a magnetic powder brake bracket; 38. a fifth coupling; 39. a magnetic powder brake; 40. a torque sensor support.

Detailed Description

The invention is described in detail below with reference to the accompanying drawings and specific embodiments.

The invention provides a test bench for relation between box structure size and speed reducer efficiency, which integrates driving, loading and detection, and please refer to fig. 1, and comprises a fixed mounting flat plate 1, a speed reducer 11, a servo motor 2, a servo motor bracket 3, a first movable baffle 15, a second movable baffle 34, a baffle transmission mechanism, a first guide piece 6, a second guide piece 13, a first torque sensor 5, a second torque sensor 36, a torque sensor bracket 40, a magnetic powder brake 39 and a magnetic powder brake bracket 37, wherein the baffle transmission mechanism comprises a ball screw 21, two ball nuts 20,25, two connecting rods 14,28, a stepping motor 33 and a stepping motor bracket 32.

The fixed mounting flat plate 1 is provided with a servo motor bracket 3, a torque sensor bracket 40, a speed reducer 11, a ball screw 21, a linear guide rail 22, a stepping motor bracket 32 and a magnetic powder brake bracket 37. Install servo motor 2 on the servo motor support 3, install first torque sensor 5 and second torque sensor 36 on the torque sensor support 40, install step motor 33 on the step motor support 32, install magnetic powder brake 39 on the magnetic powder brake support 37.

The following description focuses on a specific mounting structure of the decelerator 11 and the movable barriers 15 and 34. The speed reducer 11 comprises a box body, an input shaft 9, an oil groove (lubricating oil can be guided into the oil groove, and the lubricating oil can be replaced by lubricating oil with different viscosities), a gear transmission mechanism and an output shaft 24, wherein the input shaft 9 and the output shaft 24 are connected through the gear transmission mechanism, the gear transmission mechanism comprises a small gear 10 and a large gear 23 which are meshed with each other, the small gear 10 is used for the input shaft 9 to penetrate and fix, and the large gear 23 is used for the output shaft 24 to penetrate and fix. The servo motor 2 is arranged outside the box body, the servo motor 2 is connected with the first torque sensor 5 through the first coupler 4, and the first torque sensor 5 is connected with the speed reducer input shaft 9 through the second coupler 8. The servomotor 2 drives the input shaft 9 to operate, the rotation speed of the reducer 11 can be controlled, and the first torque sensor 5 can measure the torque of the reducer input shaft 9. The magnetic particle brake 39 and the second torque sensor 36 are connected by a fifth coupling 38, and the second torque sensor 36 and the reducer output shaft 24 are connected by a fourth coupling 35. The magnetic particle brake 39 loads the reducer output shaft 24 and the second torque sensor 36 measures the torque of the reducer output shaft 24 at different loads. The parallel is located gear drive both sides the inside wall of box respectively sets up one adjustable fender 15,34, adjustable fender 15,34 length with the inside wall length of box is the same, the box respectively has seted up the guiding hole in two adjustable fender 15, 34's position, supplies every guide 6, 13's inner stretches into and connects one adjustable fender 15,34, two guide 6, 13's outer end simultaneously with set up at the box outside ball 21 is connected, half the thick stick body of ball 21 is orthodontic, half is anti-tooth, and an orthodontic position and anti-tooth position respectively cooperate installation ball nut 20,25, and both ends are supported for BF15 primary shaft seat 17 and secondary shaft seat 30 through the model, baffle drive still includes linear guide 22, first slider 19, second slider 26, first mounting panel 16 and second mounting panel 27, the linear guide rail 22 is arranged in parallel on one side of the ball screw 21, two ends of the linear guide rail 22 are respectively sleeved with a first slider 19 and a second slider 26, the two sliders 19 and 26 are respectively supported by a first supporting seat 18 and a second supporting seat 29, the two ball nuts 20 and 25 are respectively connected with the two sliders 19 and 26 through two mounting plates 16 and 27, the mounting plates 16 and 27 are correspondingly connected with the connecting rods 14 and 28 one by one, so that the two ball nuts 20 and 25 are respectively connected with one ends of the guide members 6 and 13 through the mounting plates, the sliders, the linear guide rail and the connecting rods, the other ends of the guide members 6 and 13 are respectively provided with a first guide member fixing part 7 and a second guide member fixing part 12, the first guide member 7 and the second guide member 12 fixing parts are used for fixing the guide plates 6 and 13 and the movable baffle plates 15 and 34, the stepping motor is connected with one end of the ball screw 21 by a third coupling device 31, the stepping motor 2 drives the ball screw to rotate forwards or backwards, so that the ball screw moves oppositely on the ball screw 21 through the ball nut 20 and the ball nut 25 outside the box body, and then the first guide part 6 and the second guide part 13 are driven to move, and finally the movable baffle plates 15 and 34 inside the box body are driven to move forwards or backwards in opposite directions, and because the length of the movable baffle plates 15 and 34 is the same as that of the inner side wall of the box body, when the movable baffle plates 15 and 34 move forwards in opposite directions and are close to the gear transmission mechanism, the longitudinal size inside the box body is reduced, otherwise, when the movable baffle plates 15 and 34 move backwards and are far away from the gear transmission mechanism, the longitudinal size inside the box body is increased, namely, the structural size of the reducer box body is changed, the operation of the change process is convenient and simple, the box body does not need to be changed, and the working efficiency is greatly saved, so that the experiment table can be used for different structural sizes of the box body, The oil churning loss, bearing loss, gear mesh efficiency, and input and output shaft efficiencies of the reducer are determined at speed, load, torque, and lubricant viscosity.

In the description of the present invention, it should be noted that the terms "upper", "parallel", "inner", "outer", and the like refer to the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is used, and are used for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "fourth," "fifth," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the design of the present invention, and all equivalent changes made in the design key point of the present invention fall within the protection scope of the present invention.

Claims

1. The experiment table of box structure size and reduction gear efficiency relation, its characterized in that: the magnetic powder brake device comprises a speed reducer, a servo motor, two movable baffles, a baffle transmission mechanism, two guide pieces, a first torque sensor, a second torque sensor and a magnetic powder brake, wherein the speed reducer comprises a box body, and an input shaft, an oil groove, a gear transmission mechanism and an output shaft which are arranged in the box body; the inner side walls of the box body positioned on two sides of the gear transmission mechanism are respectively provided with a movable baffle, the length of the movable baffle is the same as that of the inner side wall of the box body, the box body is respectively provided with a guide hole at the position of each movable baffle, the inner end of each guide piece extends into and is connected with the movable baffle, and the outer ends of the two guide pieces are connected with the baffle transmission mechanism arranged outside the box body; the first torque sensor is connected with the input shaft, the second torque sensor is connected with the output shaft, and the magnetic particle sensor is connected with the second torque sensor;

the baffle transmission mechanism comprises a ball screw, two ball nuts, two connecting rods and a stepping motor, the stepping motor is connected to one end of the ball screw, one half of the shaft body of the ball screw is an orthodontic tooth, the other half of the shaft body of the ball screw is an anti-tooth, the two ball nuts are respectively installed at the orthodontic tooth position and the anti-tooth position in a matched mode, and the two ball nuts are respectively connected with the guide piece through the connecting rods;

the baffle transmission mechanism further comprises a linear guide rail, two sliders and two mounting plates, the linear guide rail is arranged on one side of the ball screw in parallel, two ends of the linear guide rail are respectively sleeved with one slider, the two ball nuts are respectively connected with the two sliders through the two mounting plates, and the mounting plates are connected with the connecting rods in a one-to-one correspondence mode.

2. A bench for testing the relationship between the structural size of a case and the efficiency of a reducer as set forth in claim 1, wherein: the experiment table is provided with a servo motor support, a torque sensor support and a magnetic powder brake support, and the servo motor, the first torque sensor, the second torque sensor and the magnetic powder brake are respectively arranged and installed.

3. A bench for testing the relationship between the structural size of a case and the efficiency of a reducer as set forth in claim 1, wherein: the gear transmission mechanism comprises a pinion and a bull gear which are meshed with each other, the pinion is used for the input shaft to penetrate and fix, and the bull gear is used for the output shaft to penetrate and fix.