Electric control test bench for torsion test of high-elasticity coupling

Abstract

The utility model relates to the technical field of elastic coupling testing devices, in particular to an electric control test bench for a torsion test of a high-elasticity coupling. Which comprises a metal plate shell and is characterized in that the interior of the metal plate shell is of a hollow structure, a top plate is installed at the top of the metal plate shell, installation holes are formed in the two sides of the bottom of the metal plate shell, a hydraulic pressing mechanism is installed in the metal plate shell, an installation platform is arranged on a sliding block, and a tested piece is arranged in the center of the top of the installation platform. According to the utility model, the practicability is high, the first servo motor is arranged to drive the first speed reducer, the first speed reducer is externally engaged to drive the slewing bearing to rotate so as to form a torsion applying device, and the hydraulic cylinder, the pull rod and the locking nut are arranged to cooperate with each other, so that a tested piece can be effectively locked; a second servo motor is arranged to drive a second speed reducer, then an output rod is driven to move front and back, a mounting platform is pushed, and horizontal loading is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of elastic coupling test devices, in particular to an electric control test bench for torsion testing of high elastic couplings. Background Art

[0002] The dynamic and static characteristic parameters of the elastic coupling have a great influence on the torsional vibration of the shaft system. The characteristic parameters of the elastic coupling mainly include torsional stiffness and damping. Dynamic torsional stiffness refers to the ratio of the elastic torque to the corresponding torsional angle amplitude within a vibration cycle. Damping refers to the ratio of the damping work converted into heat to the elastic deformation work within a vibration cycle. Obtaining the characteristic parameters of the elastic coupling becomes the key to studying the torsional vibration control performance and designing the coupling on this basis. The most accurate and effective way to obtain the dynamic and static characteristic parameters of the elastic coupling is to conduct experimental research and analysis. The torsional stiffness test of the traditional elastic coupling is mainly completed through a special test bench, but the existing test bench has a simple structure, a single functionality, and a relatively limited adaptation range. There are certain limitations in the application of various types of elastic couplings, static torsional strength tests of torsional components, and torsional tests with radial loading.

[0003] A Chinese patent discloses a static torsion test bench for a wind power coupling (publication number: CN 218674242 U), including a test bench with a wind power coupling fixed thereon, the test bench including a sensor for measuring the torque of the wind power coupling, a hydraulic transmission device provided on one side of the test bench, the hydraulic transmission device providing torque for the wind power coupling; the hydraulic transmission device and the sensor are both connected to a PLC in a control cabinet, but the test bench has a single functionality and a relatively limited adaptation range, and has certain limitations in the application of static torsion strength tests of various elastic couplings and torsion components, and torsion tests with radial loading, and therefore, an electrically controlled test bench for torsion testing of highly elastic couplings is required. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art, namely, the single functionality of the test bench, the limited adaptation range, certain limitations in the static torsional strength tests of various elastic couplings and torsional components, and the torsional tests with radial loading, and to propose an electronically controlled test bench for torsion testing of high-elastic couplings.

[0005] The technical solution adopted by the utility model to solve its technical problems is: the utility model describes an electric control test bench for torsion testing of a high elastic coupling, comprising a sheet metal shell, characterized in that: the interior of the sheet metal shell is a hollow structure, a top plate is installed on the top of the sheet metal shell, mounting holes are provided on both sides of the bottom of the sheet metal shell, a hydraulic clamping mechanism is installed inside the sheet metal shell, a concrete floor layer is provided at the bottom of the sheet metal shell, a linear slide rail is installed on the top of the top plate, the number of the linear slide rails is 2 and they are arranged corresponding to each other, sliding blocks are installed on the linear slide rails, a mounting platform is provided on the sliding block, a test piece is provided at the top center of the mounting platform, and a horizontal loading mechanism is provided on one side of the mounting platform.

[0006] Preferably, the hydraulic clamping mechanism includes a hydraulic cylinder, a pull rod is connected to the top of the hydraulic cylinder, a pad is provided on the top of the pull rod, a locking nut is provided on the pad, the pad is associated with the workpiece to be tested, and by providing the locking nut, the pull rod can be driven to lock the workpiece to be tested when the hydraulic cylinder is pulled down.

[0007] Preferably, a roulette bearing is installed on the outer wall of the hydraulic cylinder, and the roulette bearing consists of an inner ring and an outer ring. A torque sensor is provided on the inner ring, and a first reducer is connected to one side of the outer ring. A first servo motor is connected to one end of the first reducer. The roulette bearing can be driven to rotate by arranging the first servo motor to drive the bearing to rotate in a gear meshing manner.

[0008] Preferably, a rotation angle sensor is provided on one side of the wheel bearing. By arranging the rotation angle sensor and installing it on the output end of the turntable bearing, the measured rotation angle is not affected by the clearance of the reducer and can directly reflect the angle change of the test piece.

[0009] Preferably, the horizontal loading mechanism includes a motor fixing seat, a second servo motor is mounted on the fixing seat, and a second reducer is provided above the second servo motor. By using the second servo motor for drive control, since the servo motor has good controllability and a large speed regulation range, complex test loading functions can be realized, and both displacement control (equal rate displacement, constant displacement) and force control can be performed.

[0010] Preferably, one end of the second servo motor is connected to an output rod, and the output rod is associated with one side of the mounting platform. By setting the output rod to be associated with the mounting platform, the second servo motor drives the output rod to push the mounting platform to complete horizontal loading.

[0011] The utility model is beneficial in that:

[0012] The utility model has high practicality and simple operation. A first servo motor is arranged to drive a first reducer, and the first reducer is externally engaged to drive the slewing bearing to rotate, so as to form a torque applying device. The torque is applied vertically. The cooperation of a hydraulic cylinder, a pull rod and a locking nut can be arranged to effectively lock the tested piece. A second servo motor is arranged to drive a second reducer, and then the output rod is driven to move forward and backward to push the installation platform to complete horizontal loading. An angle sensor is arranged to be installed at the output end of the turntable bearing. The measured angle is not affected by the reducer gap, and the angle change of the tested piece is directly reflected. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 It is a schematic diagram of the structure of the utility model.

[0015] Figure 2 It is a partial structural schematic diagram of the utility model.

[0016] In the figure: 1. Second reducer; 2. Second servo motor; 3. Sheet metal housing; 4. First reducer; 5. First servo motor; 6. Concrete floor layer; 7. Motor fixing seat; 8. Output rod; 9. Locking nut; 10. Test piece; 11. Mounting platform; 12. Sliding block; 13. Linear slide rail; 14. Top plate; 15. Pull rod; 16. Mounting hole; 17. Inner ring; 18. Outer ring; 19. Angle sensor; 20. Pad; 21. Hydraulic cylinder; 22. Torque sensor. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0018] See also Figure 1-2As shown, an electric control test bench for torsion test of high elastic coupling includes a sheet metal shell 3, characterized in that: the interior of the sheet metal shell 3 is a hollow structure, a top plate 14 is installed on the top of the sheet metal shell 3, mounting holes 16 are provided on both sides of the bottom of the sheet metal shell 3, a hydraulic clamping mechanism is installed inside the sheet metal shell 3, a concrete floor layer 6 is provided at the bottom of the sheet metal shell 3, a linear slide rail 13 is installed on the top of the top plate 14, the number of the linear slide rails 13 is 2 and they are arranged corresponding to each other, a sliding block 12 is installed on each of the linear slide rails 13, a mounting platform 11 is provided on the sliding block 12, a test piece 10 is provided at the top center of the mounting platform 11, and a horizontal loading mechanism is provided on one side of the mounting platform 11.

[0019] In this embodiment, the hydraulic clamping mechanism includes a hydraulic cylinder 21. The maximum output of the hydraulic cylinder 21 is not less than 1200 kN, and the stroke of the hydraulic cylinder 21 is not less than 30 mm. The hydraulic cylinder 21 is a common product on the market and can be purchased directly. A pull rod 15 is connected to the top of the hydraulic cylinder 21. A pad 20 is provided on the top of the pull rod 15. A locking nut 9 is provided on the pad 20. The pad 20 is associated with the workpiece 10. By setting the locking nut 9, the pull rod 15 can be driven to lock the workpiece 10 when the hydraulic cylinder 21 is pulled down.

[0020] In this embodiment, a roulette bearing is installed on the outer wall of the hydraulic cylinder 21. The roulette bearing consists of an inner ring 17 and an outer ring 18. A torque sensor 22 is provided on the inner ring 17. The upper part of the torque sensor 22 is connected to the inner ring 17 of the sample. The torque sensor 22 directly measures the torque. The torque sensor 22 is a multi-turn rotatable torque sensor 22. A first reducer 4 is connected to one side of the outer ring 18. A first servo motor 5 is connected to one end of the first reducer 4. The first servo motor 5 is a common product on the market and can be purchased directly. The model of the first servo motor 5 is SGMPH-01ACA2C. By setting the first servo motor 5 to drive the bearing to rotate in a gear meshing manner, the roulette bearing can be driven to rotate.

[0021] In this embodiment, a rotation angle sensor 19 is provided on one side of the wheel bearing. The rotation angle sensor 19 is a common product on the market and can be purchased directly. By setting the rotation angle sensor 19 to be installed at the output end of the turntable bearing, the measured rotation angle is not affected by the reducer clearance and can directly reflect the angle change of the test piece.

[0022] In this embodiment, the horizontal loading mechanism includes a motor fixing seat 7, on which a second servo motor 2 is installed, and a second reducer 1 is provided above the second servo motor 2. By using the second servo motor 2 for drive control, since the servo motor has good controllability and a large speed regulation range, complex test loading functions can be realized, and both displacement control (equal rate displacement, constant displacement) and force control can be performed.

[0023] In this embodiment, an output rod 8 is connected to one end of the second servo motor 2. The model of the second servo motor 2 is also SGMPH-01ACA2C. The second servo motor 2 is a common product on the market and can be purchased directly. The output rod 8 is associated with one side of the mounting platform 11. By setting the output rod 8 to be associated with the mounting platform 11, the second servo motor 2 drives the output rod 8 to push the mounting platform 11 to complete horizontal loading.

[0024] The implementation principle of this embodiment is as follows: first, the sheet metal shell 3 is fixed on the concrete ground layer 6 by fixing bolts, and the test piece 10 is placed on the axis of the pull rod 15. A pad 20 is placed on the head of the pull rod 15, the locking nut 9 is locked, and the hydraulic cylinder 21 is pulled down to lock the test piece 10. The first servo motor 5 drives the first reducer 4, and the first reducer 4 externally engages to drive the slewing bearing to rotate, forming a torque applying device. The torque is applied vertically, with a rated output torque of 20 kNm; rated speed: 0-10° / min, steplessly adjustable; the second servo motor 2 drives the second reducer 1, and then drives the output rod 8 to move forward and backward, pushing the mounting platform 11 to complete horizontal loading. The angle sensor 19 is installed at the output end of the turntable bearing. The measured angle is not affected by the reducer gap and directly reflects the angle change of the test piece.

[0025] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0026] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. An electric control test bench for torsion testing of a high elastic coupling, comprising a sheet metal housing (3), characterized in that: The interior of the sheet metal shell (3) is a hollow structure, a top plate (14) is installed on the top of the sheet metal shell (3), mounting holes (16) are provided on both sides of the bottom of the sheet metal shell (3), a hydraulic clamping mechanism is installed inside the sheet metal shell (3), a concrete floor layer (6) is provided at the bottom of the sheet metal shell (3), a linear slide rail (13) is installed on the top of the top plate (14), the number of the linear slide rails (13) is 2 and they are arranged corresponding to each other, a sliding block (12) is installed on each of the linear slide rails (13), a mounting platform (11) is provided on the sliding block (12), a test piece (10) is provided at the center of the top of the mounting platform (11), and a horizontal loading mechanism is provided on one side of the mounting platform (11).

2. The electronically controlled test bench for torsion testing of a high elastic coupling according to claim 1, characterized in that: The hydraulic clamping mechanism comprises a hydraulic cylinder (21), the top of the hydraulic cylinder (21) is connected to a pull rod (15), the top of the pull rod (15) is provided with a cushion block (20), the cushion block (20) is provided with a locking nut (9), and the cushion block (20) is associated with the test piece (10).

3. The electronically controlled test bench for torsion testing of a high elastic coupling according to claim 2, characterized in that: A wheel bearing is mounted on the outer wall of the hydraulic cylinder (21), the wheel bearing comprising an inner ring (17) and an outer ring (18), a torque sensor (22) is provided on the inner ring (17), a first reducer (4) is connected to one side of the outer ring (18), and a first servo motor (5) is connected to one end of the first reducer (4).

4. The electronically controlled test bench for torsion testing of a high elastic coupling according to claim 3, characterized in that: A rotation angle sensor (19) is provided on one side of the wheel bearing.

5. The electronically controlled test bench for torsion testing of a high elastic coupling according to claim 1, characterized in that: The horizontal loading mechanism comprises a motor fixing seat (7), a second servo motor (2) is mounted on the fixing seat, and a second reducer (1) is arranged above the second servo motor (2).

6. The electronically controlled test bench for torsion testing of a high elastic coupling according to claim 5, characterized in that: One end of the second servo motor (2) is connected to an output rod (8), and the output rod (8) is associated with one side of the mounting platform (11).

Images