Torsional fatigue testing machine for transmission shaft

Abstract

The utility model discloses a transmission shaft torsional fatigue testing machine, which relates to the technical field of transmission shaft testing and comprises a workbench, a torsion component arranged on one side of the top surface of the workbench, a slide rail component arranged on the other side of the top surface of the workbench, and an angle adjusting mechanism arranged on the top surface of the slide rail component. A supporting component is arranged between the sliding rail assembly and the angle adjusting mechanism, the supporting component is arranged on the top face of the workbench, and a protection assembly is arranged above the workbench. In the using process of the device, the transmission shaft can be stably clamped, and accurate torsion testing can be achieved; the structure of the testing machine is optimized, and stability and reliability are improved; wear-resistant materials and structural reinforcement design are adopted, vulnerable parts are reduced, the service life is prolonged, a comprehensive and reliable basic database can be established through a fatigue life test, analysis design reliability is provided, development time is shortened, development cost is reduced, and the problems of product life reliability and bearing capacity are solved.

Description

Technical Field

[0001] This utility model relates to the field of transmission shaft testing technology, specifically a transmission shaft torsional fatigue testing machine. Background Technology

[0002] The driveshaft torsional fatigue testing machine is a testing device that simulates the torsional stress experienced by a driveshaft in a car or other equipment that requires a driveshaft during driving or use, under normal, extreme, or even much more extreme conditions.

[0003] The existing transmission shaft torsional fatigue testing machine has the following drawbacks: the clamps are not securely fixed, which can easily lead to the test sample falling off or deforming; the control system is not precise enough to meet the requirements of accurate testing; and the data acquisition and analysis efficiency is low, requiring manual intervention and processing. Utility Model Content

[0004] The purpose of this invention is to provide a transmission shaft torsional fatigue testing machine to address the shortcomings of existing technologies.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a workbench is included, a torsion assembly is provided on one side of the top surface of the workbench, a slide rail assembly is provided on the other side of the top surface of the workbench, an angle adjustment mechanism is provided on the top surface of the slide rail assembly, a support component is provided between the slide rail assembly and the angle adjustment mechanism, the support component is provided on the top surface of the workbench, a protective assembly is provided above the workbench, the torsion assembly, the slide rail assembly, the angle adjustment mechanism and the support component are all located inside the protective assembly, and several pads are movably provided on the bottom surface of the workbench.

[0006] As described above, the torsion fatigue testing machine for transmission shafts includes a power motor, a reducer, and a flange. The power motor is connected to the worktable via a power motor bracket, the reducer is connected to the worktable via a reducer bracket, and the output shaft of the power motor is connected to the flange via the reducer.

[0007] As described above, the transmission shaft torsional fatigue testing machine includes a slide rail assembly comprising a second power motor, a second reducer, a rack, and a first sliding seat. Guide rails are fixedly installed on both the front and rear sides of the top surface of the worktable. The first sliding seat slides in cooperation with the first guide rail. The rack is located between the two first guide rails and is fixedly installed on the top surface of the worktable. A gear meshes above the rack. The second power motor is connected to the top surface of the first sliding seat via a second power motor bracket. The second reducer is connected to the first sliding seat via a second reducer bracket. The second power motor and the gear are connected via the second reducer.

[0008] As described above, the transmission shaft torsional fatigue testing machine includes an angle adjustment mechanism comprising a sliding seat II, an angle swing seat, and a handle. Guide rails II are provided on both the left and right sides of the top surface of the sliding seat I. The sliding seat II slides in conjunction with the guide rails II and is locked to the guide rails II by bolts. A T-shaped arc groove is formed on the top surface of the sliding seat II. The angle swing seat is slidably connected to the arc groove and is locked to the arc groove by bolts. A handle is fixedly installed on the front side of the angle swing seat. A sensor connection flange is provided on the side of the angle swing seat closest to the torsion assembly. The sensor connection flange is connected to the top surface of the angle swing seat via a flange bracket. A torque sensor is installed between the sensor connection flange and the top of the angle swing seat.

[0009] As described above, the transmission shaft torsion fatigue testing machine includes a lead screw and a support plate. The top surfaces of the front and rear sides of the support plate are provided with through holes. The lead screw passes through the corresponding through holes and can move along the through holes. Nuts are rotatably installed on the top surfaces of the front and rear sides of the support plate. The nuts are threadedly engaged with the corresponding lead screws. A slider is fixedly installed at the lower end of the lead screw, and the slider is slidably connected to the corresponding guide rail.

[0010] As described above, the transmission shaft torsional fatigue testing machine includes a protective cover and guide rails. Protective covers are provided on both sides above the worktable, and several guide blocks are fixedly installed on the bottom surface of the protective covers. Guide rails are provided on both the front and rear sides of the top surface of the worktable, and the guide blocks slide in cooperation with the corresponding guide rails.

[0011] As described above, in the transmission shaft torsional fatigue testing machine, a screw is fixedly mounted on the top surface of the pad, and two nuts are threaded onto the screw, which passes through the worktable.

[0012] Compared with the prior art, the beneficial effects of this utility model are: during use, this device can stably clamp the transmission shaft and achieve accurate torsion testing; the structure of the testing machine is optimized to improve stability and reliability; wear-resistant materials and structural reinforcement design are adopted to reduce vulnerable parts and extend service life; through fatigue life testing, a comprehensive and reliable basic database can be established to provide analysis and design reliability, shorten development time, reduce development costs, and solve the problems of product life reliability and load-bearing capacity. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model without the protective cover;

[0015] Figure 2 This is a top view of the structure of this utility model without the protective cover;

[0016] Figure 3 This is a schematic diagram of the overall structure of the present invention from the left view.

[0017] Figure reference numerals: 1-Workbench, 11-Guide rail one, 2-Torsion assembly, 21-Power motor one, 22-Reducer one, 23-Flange one, 24-Motor bracket one, 25-Reducer bracket one, 3-Slide rail assembly, 31-Power motor two, 32-Reducer two, 33-Rack, 34-Sliding seat one, 341-Guide rail two, 35-Power motor bracket two, 36-Reducer bracket two, 4-Angle adjustment mechanism, 41-Sliding seat two, 42-Angle swing seat, 43-Handle, 45-Arc groove, 46-Sensor connection flange, 47-Flange bracket, 48-Torque sensor, 5-Support component, 51-Screw rod, 52-Support plate, 53-Nut, 54-Slider, 6-Protective assembly, 61-Protective cover, 62-Guide block, 63-Guide rail, 7-Shim, 71-Screw rod, 72-Nut. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] like Figures 1 to 3 As shown in the figure, the transmission shaft torsional fatigue testing machine disclosed in this embodiment includes a worktable 1. A torsional assembly 2 is provided on one side of the top surface of the worktable 1. The torsional assembly 2 includes a power motor 21, a reducer 22, and a flange 23. The power motor 21 is connected to the worktable 1 through a power motor bracket 24, and the reducer 22 is connected to the worktable 1 through a reducer bracket 25. The output shaft of the power motor 21 is connected to the flange 23 through the reducer 22. The power motor 21 is electrically connected to a computer. The computer controls the operation of the power motor 21. The output shaft of the power motor 21 drives the flange 23 to rotate through the reducer 22. The flange 23 can drive the transmission shaft to rotate to perform torsional fatigue testing. The reducer 22 can reduce the speed of the power motor 21, thereby making the doll more stable during operation.

[0020] On the other side of the top surface of the workbench 1, there is a slide rail assembly 3. The slide rail assembly 3 includes a second power motor 31, a second reducer 32, a rack 33, and a first sliding seat 34. Guide rails 11 are fixedly installed on both the front and rear sides of the top surface of the workbench 1. The first sliding seat 34 slides with the guide rails 11. The rack 33 is located between the two guide rails 11 and is fixedly installed on the top surface of the workbench 1. A gear is meshed on the top of the rack 33. The second power motor 31 is connected to the top surface of the first sliding seat 34 through a second power motor bracket 35. The second reducer 31... 32 is connected to the sliding seat 34 via the reducer bracket 36. The power motor 31 is connected to the gear via the reducer 32. One end of the transmission shaft is connected to the flange 23. The position of the slide rail assembly 3 is adjusted according to the length of the transmission shaft. The power motor 31 works. The output shaft of the power motor 31 drives the gear to rotate via the reducer 32. While the gear is rotating, it meshes with the rack 33 and can move along the rack 33. Thus, the slide rail assembly 3 can drive the distance between the angle adjustment mechanism 4 and the torsion assembly 2.

[0021] An angle adjustment mechanism 4 is provided on the top surface of the slide rail assembly 3. The angle adjustment mechanism 4 includes a second sliding seat 41, an angle swing seat 42, and a handle 43. Guide rails 341 are provided on both the left and right sides of the top surface of the first sliding seat 34. The second sliding seat 41 and the guide rails 341 are slidably engaged and locked together by bolts. The top surface of the second sliding seat 41 has a T-shaped arc groove 45. The angle swing seat 42 is slidably connected to the arc groove 45 and locked together by bolts. The handle 43 is fixedly installed on the front side of the angle swing seat 42. A sensor connection flange 46 is provided on the side of the angle swing seat 42 that is close to the torsion assembly 2. The sensor connection flange 46 is connected to the top surface of the angle swing seat 42 through a flange bracket 47. A torque sensor 4 is provided between the sensor connection flange 46 and the top of the angle swing seat 42. 8. The torque sensor 48 is electrically connected to the computer. The drive shaft is in the form of a universal joint. In actual use, different swing angles or actual installation angles will occur. Adjustments can be made according to the actual situation. The second sliding seat 41 can move back and forth along the first sliding seat 34 via the second guide rail 341. At the same time, it can move along the arc groove 45 via the angle swing seat 42. The angle swing seat 42 can drive the sensor connecting flange 46 to adjust the swing angle. The corresponding angle swing seat 42 and the second sliding seat 41 can be locked by bolts. The other end of the drive shaft is connected to the sensor connecting flange 46. When the first power motor 21 drives the drive shaft, the force is applied to the drive shaft and transmitted to the torque sensor 48 through the flange bracket 47 to generate torque. The torque sensor 48 transmits the signal to the signal acquisition software and sends it to the computer for data aggregation and analysis to simulate the required situation.

[0022] A support component 5 is provided between the slide rail assembly 3 and the angle adjustment mechanism 4. The support component 5 is located on the top surface of the worktable 1. The support component 5 includes a lead screw 51 and a support plate 52. Through holes are opened on the top surfaces of the front and rear sides of the support plate 52. The lead screw 51 passes through the corresponding through holes and can move along the through holes. Nuts 53 are rotatably installed on the top surfaces of the front and rear sides of the support plate 52. The nuts 53 are threadedly engaged with the corresponding lead screw 51. A slider 54 is fixedly installed at the lower end of the lead screw 51. The slider 54 is slidably connected to the corresponding guide rail 11. When torsional fatigue tests are performed on drive shafts of different diameters, rotating the two nuts 53 at the same time can move the support plate 52 along the lead screw 51, thereby adjusting the height of the support plate 52. When torsional fatigue tests are performed on drive shafts of different lengths, the slider 54 moves along the guide rail 11, which can adjust the position of the support plate 52 so that the support plate 52 is located in the middle of the drive shaft, thus providing support for the drive shaft.

[0023] A protective assembly 6 is installed above the workbench 1. The torsion assembly 2, slide rail assembly 3, angle adjustment mechanism 4, and support component 5 are all located inside the protective assembly 6. The protective assembly 6 includes a protective cover 61 and a guide rail 63. Protective covers 61 are provided on both sides above the workbench 1. Several guide blocks 62 are fixedly installed on the bottom surface of the protective cover 61. Guide rails 63 are provided on both the front and rear sides of the top surface of the workbench 1. The guide blocks 62 slide in cooperation with the corresponding guide rails 63. During operation, the protective cover 61 can play a protective role to prevent injury to the operator when the drive shaft breaks. The sliding cooperation between the guide blocks 62 and the guide rails 63 makes it easy to move the position of the protective cover 61, which is convenient for the operator to operate.

[0024] Several shims 7 are movably installed on the bottom surface of the workbench 1. The top surface of the shims 7 is fixedly mounted with screws 71, and two nuts 72 are threaded onto the screws 71. The screws 71 pass through the workbench 1, and the shims 7 provide support for the workbench 1, making it more stable during operation. The screws 71 and nuts 72 make it easy to adjust the height of the device and easy to replace the shims 7, making the device more convenient to use.

[0025] Working principle:

[0026] Before conducting the experiment, the drive shaft must be installed. Because the drive shaft is in the form of a universal joint, different swing angles or actual installation angles will occur during actual use. The support component 5 supports the sample to prevent the drive shaft from sagging due to the universal joint. The slide rail assembly 3 adjusts the distance between itself and the torsion assembly 2 according to the length of the drive shaft. The sliding seat 41 can be adjusted and moved back and forth. The angular swing seat 42 can swing to adjust the swing angle, creating a required angle and installation position with the drive shaft.

[0027] The power motor 21 rotates under computer control, driving the reducer 22 to rotate. The reducer 22 applies force to the drive shaft sample through the flange 23. One end of the drive shaft is connected to the flange 23, and the other end is connected to the sensor connection flange 46. The torque is transmitted to the torque sensor 48 through the flange bracket 47 to generate torque. The torque sensor 48 transmits the signal to the signal acquisition software and sends it to the computer for data aggregation and analysis to simulate the required conditions.

[0028] It should be noted that the above embodiments are only specific and clear descriptions of the technical solutions and features of this application. Solutions or features that are prior art or common knowledge to those skilled in the art will not be described in detail in the above embodiments.

[0029] Furthermore, the technical solutions of this application are not limited to the above embodiments. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A transmission shaft torsional fatigue testing machine, comprising a worktable (1), characterized in that: A torsion assembly (2) is provided on one side of the top surface of the workbench (1), and a slide rail assembly (3) is provided on the other side of the top surface of the workbench (1). An angle adjustment mechanism (4) is provided on the top surface of the slide rail assembly (3). A support component (5) is provided between the slide rail assembly (3) and the angle adjustment mechanism (4). The support component (5) is located on the top surface of the workbench (1). A protective assembly (6) is provided above the workbench (1). The torsion assembly (2), the slide rail assembly (3), the angle adjustment mechanism (4) and the support component (5) are all located inside the protective assembly (6). Several pads (7) are movably provided on the bottom surface of the workbench (1).

2. The transmission shaft torsional fatigue testing machine according to claim 1, characterized in that: The torsion assembly (2) includes a power motor (21), a reducer (22), and a flange (23). The power motor (21) is connected to the worktable (1) via a power motor bracket (24). The reducer (22) is connected to the worktable (1) via a reducer bracket (25). The output shaft of the power motor (21) is connected to the flange (23) via the reducer (22).

3. The transmission shaft torsional fatigue testing machine according to claim 1, characterized in that: The slide rail assembly (3) includes a second power motor (31), a second reducer (32), a rack (33), and a first sliding seat (34). The first guide rail (11) is fixedly installed on both the front and rear sides of the top surface of the workbench (1). The first sliding seat (34) is slidably engaged with the first guide rail (11). The rack (33) is located between the two first guide rails (11). The rack (33) is fixedly installed on the top surface of the workbench (1). A gear is meshed above the rack (33). The second power motor (31) is connected to the top surface of the first sliding seat (34) through a second power motor bracket (35). The second reducer (32) is connected to the first sliding seat (34) through a second reducer bracket (36). The second power motor (31) and the gear are connected through the second reducer (32).

4. The transmission shaft torsional fatigue testing machine according to claim 3, characterized in that: The angle adjustment mechanism (4) includes a sliding seat (41), an angle swing seat (42), and a handle (43). Guide rails (341) are provided on both the left and right sides of the top surface of the sliding seat (34). The sliding seat (41) slides with the guide rails (341), and the sliding seat (41) and guide rails (341) are locked together by bolts. A T-shaped arc groove (45) is opened on the top surface of the sliding seat (41), and the angle swing seat (42) slides with the arc groove (45). The angle swing seat (42) and the arc groove (45) are connected by bolts. A handle (43) is fixedly installed on the front side of the angle swing seat (42). A sensor connection flange (46) is provided on the side of the angle swing seat (42) that is close to the torsion assembly (2). The sensor connection flange (46) and the top surface of the angle swing seat (42) are connected by a flange bracket (47). A torque sensor (48) is provided between the sensor connection flange (46) and the top of the angle swing seat (42).

5. The transmission shaft torsional fatigue testing machine according to claim 3, characterized in that: The support component (5) includes a lead screw (51) and a support plate (52). The top surfaces of the front and rear sides of the support plate (52) are provided with through holes. The lead screw (51) passes through the corresponding through holes and can move along the through holes. Nuts (53) are rotatably installed on the top surfaces of the front and rear sides of the support plate (52). The nuts (53) are threadedly engaged with the corresponding lead screw (51). The lower end of the lead screw (51) is fixedly installed with a slider (54). The slider (54) is slidably connected to the corresponding guide rail (11).

6. The transmission shaft torsional fatigue testing machine according to claim 1, characterized in that: The protective component (6) includes a protective cover (61) and a guide rail (63). The protective cover (61) is provided on both sides above the workbench (1). Several guide blocks (62) are fixedly installed on the bottom surface of the protective cover (61). Guide rails (63) are provided on both the front and rear sides of the top surface of the workbench (1). The guide blocks (62) slide with the corresponding guide rails (63).

7. The transmission shaft torsional fatigue testing machine according to claim 1, characterized in that: The top surface of the pad (7) is fixedly mounted with a screw (71), and two nuts (72) are threaded onto the screw (71). The screw (71) passes through the workbench (1).

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