Testing device
By using a six-dimensional force sensor and a motor controller in the test device, the problem of inaccurate test results caused by complex structure of the existing test device is solved, and the rapid and accurate performance verification of the test parts is achieved.
Patent Information
- Application Number
- CN202421121225.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2034-05-21
AI Technical Summary
The existing test devices have complex structures, resulting in inaccurate test results.
A test device including a bench, a motor, a motor controller and a six-dimensional force sensor was designed. The tension and torque of the part to be tested in different directions at different speeds were measured through the six-dimensional force sensor, and the motor rotation was controlled by combining the motor controller. , achieve fast and accurate performance verification.
The test parts are quickly and accurately validated, and their tensile and torque performance at different speeds are evaluated, which improves the accuracy of the test results.
Smart Images
Figure CN222364748U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of testing devices, in particular to a testing device. Background Art
[0002] At present, many devices use testing devices to test the performance of the equipment in order to ensure production quality and meet usage requirements. For example, a rotorcraft generally includes an aircraft body and a rotor connected to it. Each rotorcraft has different power requirements, resulting in different sizes of rotors (i.e. blades). Therefore, in order to make the rotors fit the aircraft body, it is necessary to test the performance of the rotors. However, the existing testing devices have complex structures and require multiple components to implement the test, resulting in inaccurate test results. Utility Model Content
[0003] The utility model provides a testing device to solve the problems of complex structure and inaccurate testing results of existing testing devices.
[0004] A testing device comprises a test bench, a motor, a motor controller and a six-dimensional force sensor; the six-dimensional force sensor is arranged on the test bench;
[0005] The fixed end of the motor is connected to the six-dimensional force sensor, and the output end of the motor is used to install the test piece;
[0006] The motor controller is arranged on the stand and connected to the motor to control the rotation of the motor.
[0007] Preferably, the testing device further comprises a first tool; the first tool is fixed on the stand, and the six-axis force sensor is arranged on the first tool.
[0008] Preferably, the testing device further comprises a second fixture; a first end of the second fixture is connected to the six-dimensional force sensor, and a second end of the second fixture is connected to a fixed end of the motor.
[0009] Preferably, the testing device further comprises a vibration-damping pad; the vibration-damping pad is arranged between the first end of the second tooling and the six-dimensional force sensor.
[0010] Preferably, the stand comprises a base and a column; the first end of the column is fixed on the base, and the second end of the column is provided with the six-dimensional force sensor;
[0011] The projection of the output end of the motor along the axial direction of the column is outside the projection area formed by the base along the axial direction of the column.
[0012] Preferably, the testing device further comprises a rotation speed sensing mechanism, and the rotation speed sensing mechanism is arranged on the test piece and / or the test stand, and is used to test the rotation speed of the test piece.
[0013] Preferably, the rotation speed sensing mechanism comprises a photoelectric coupling sensor and a reflective strip;
[0014] The photoelectric coupling sensor is arranged on the stand, corresponds to the motor, and is connected to the motor controller;
[0015] The reflective strip is arranged on the test piece, and when the test piece rotates, the projection of the photoelectric coupling sensor along the axial direction of the motor at least partially overlaps with the projection of the reflective strip along the axial direction of the motor.
[0016] Preferably, the testing device further comprises a control cabinet; the control cabinet is arranged on the bench and is used for installing the testing sensor.
[0017] Preferably, the test sensor comprises a vibration sensor collector and / or a voltage and current sensor.
[0018] Preferably, the object to be tested comprises a rotor.
[0019] The test device provided by the embodiment of the utility model includes a bench arm, a motor arm, a motor controller arm and a six-dimensional force sensor arm. The bench arm serves as a supporting base to ensure the stability of the test device. During installation, the six-dimensional force sensor arm is first installed on the bench arm, and then the fixed end of the motor arm is installed on the six-dimensional force sensor arm, and the test piece is installed on the output end of the motor arm; then the motor controller arm is installed on the bench arm and connected to the motor arm; the motor arm is controlled to rotate by the motor controller arm to control the rotation speed of the test piece; the six-dimensional force sensor arm can measure the tension and torque of the test piece in different directions at different speeds. The test device in this example has a simple structure. Through the cooperation of the six-dimensional force sensor arm and the motor controller arm, the tension and torque of the test piece in different directions at different speeds can be quickly and accurately verified, thereby evaluating the performance of the test piece. Among them, the six-dimensional force sensor arm is mainly composed of three mutually perpendicular force sensitive elements and three mutually perpendicular torque sensitive elements, which can convert force and torque into electrical signals for output. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0021] Figure 1 This is a front view of a test device in one embodiment of the utility model
[0022] Figure 2 It is an enlarged view of a part of the structure of the testing device in one embodiment of the utility model;
[0023] Figure 3 It is a side view of a testing device in one embodiment of the utility model.
[0024] Among them, 1. test stand; 101. base; 102. column; 2. motor; 3. motor controller; 4. six-dimensional force sensor; 5. first tooling; 51. support plate; 52. support arm; 6. second tooling; 61. connector; 62. support plate; 7. vibration damping pad; 8. speed sensing mechanism; 9. control cabinet; 10. test sensor; 1001. vibration sensor collector; 1002. voltage and current sensor; 11. rotor. DETAILED DESCRIPTION
[0025] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0026] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.
[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0028] The utility model embodiment provides a testing device, referring to Figure 1 and Figure 2 The test device includes a test bench 1, a motor 2, a motor controller 3 and a six-dimensional force sensor 4; the six-dimensional force sensor 4 is arranged on the test bench 1; the fixed end of the motor 2 is connected to the six-dimensional force sensor 4, and the output end of the motor 2 is used to install the test piece; the motor controller 3 is arranged on the test bench 1 and connected to the motor 2 for controlling the rotation of the motor 2.
[0029] As an example, the test device includes a bench 1, a motor 2, a motor controller 3 and a six-dimensional force sensor 4, and the bench 1 serves as a supporting base to ensure the stability of the test device. During installation, the six-dimensional force sensor 4 is first installed on the bench 1, and then the fixed end of the motor 2 is installed on the six-dimensional force sensor 4, and the test piece is installed on the output end of the motor 2; then the motor controller 3 is installed on the bench 1 and connected to the motor 2; the motor 2 is controlled to rotate by the motor controller 3 to control the speed of the test piece; the six-dimensional force sensor 4 can measure the tension and torque of the test piece in different directions at different speeds. The test device in this example has a simple structure. Through the cooperation of the six-dimensional force sensor 4 and the motor controller 3, the tension and torque of the test piece in different directions at different speeds can be quickly and accurately verified, thereby evaluating the performance of the test piece. Among them, the six-dimensional force sensor 4 is mainly composed of three mutually perpendicular force sensitive elements and three mutually perpendicular torque sensitive elements, which can convert force and torque into electrical signals for output.
[0030] For example, the test piece is rotor 11, which is connected to the output end of motor 2 by bolts. Motor 2 drives rotor 11 to rotate, and motor controller 3 is used to control motor 2 to output different speeds. When rotor 11 rotates, torque and tension will be generated. The six-dimensional force sensor 4 can quickly and accurately measure the tension and torque of rotor 11 in different directions at different speeds, thereby evaluating the power system performance of rotor 11.
[0031] In one embodiment, referring to Figure 1 The testing device also includes a first tooling 5 ; the first tooling 5 is fixed on the bench 1 , and the six-dimensional force sensor 4 is arranged on the first tooling 5 .
[0032] As an example, the test device also includes a first fixture 5; the first fixture 5 includes a support plate 51 and support arms 52 extending from the two side edges of the support plate 51 in a direction perpendicular to the support plate 51, the support plate 51 is fixed on the bench 1, and the six-dimensional force sensor 4 is installed on the support arm 52, so that the six-dimensional force sensor 4 and the test piece and the bench 1 act in two directions to avoid interference between the test piece and the bench 1, so as to measure the tension and torque of the test piece through the six-dimensional force sensor 4. The first fixture 5 is built with 29-31mm steel, which can ensure the overall rigidity and strength of the test device.
[0033] In one embodiment, referring to Figure 1 The testing device also includes a second tooling 6 ; a first end of the second tooling 6 is connected to the six-dimensional force sensor 4 , and a second end of the second tooling 6 is connected to a fixed end of the motor 2 .
[0034] As an example, the test device also includes a second fixture 6; the second fixture 6 includes at least three mutually parallel connecting members 61 and two support plates 62, the two support plates 62 are respectively installed at the two ends of the connecting member 61, at least three connecting members 61 are evenly distributed in a ring shape, one support plate 62 is connected to the six-dimensional force sensor 4, and the other support plate 62 is connected to the fixed end of the motor 2, so that the six-dimensional force sensor 4 can be connected to the motor 2 through the second fixture 6, which is convenient for transmitting tension and torque. Among them, the second fixture 6 is built with 29-31mm steel, which can ensure the overall rigidity and strength of the test device.
[0035] In one embodiment, referring to Figure 1 The testing device also includes a vibration-damping pad 7 ; the vibration-damping pad 7 is arranged between the first end of the second tooling 6 and the six-dimensional force sensor 4 .
[0036] As an example, the testing device also includes a vibration-damping pad 7; during installation, the vibration-damping pad 7 is installed between the first end of the second tooling 6 and the six-dimensional force sensor 4, so that a soft connection is adopted between the test piece and the six-dimensional force sensor 4, thereby attenuating the vibration energy generated by the test piece and transmitted to the six-dimensional force sensor 4, thereby avoiding damage to the six-dimensional force sensor 4 by the vibration.
[0037] In one embodiment, referring to Figure 1 and Figure 3 The stand 1 includes a base 101 and a column 102; the first end of the column 102 is fixed on the base 101, and the second end of the column 102 is provided with a six-dimensional force sensor 4; the projection of the output end of the motor 2 along the axial direction of the column 102 is outside the projection area formed by the base 101 along the axial direction of the column 102.
[0038] As an example, the bench 1 includes a base 101 and a column 102; when installed, the base 101 is installed on the workbench or the ground as a reference, the first end of the column 102 is fixed on the base 101, and the second end of the column 102 is provided with a six-dimensional force sensor 4. The base 101 and the column 102 are constructed with 29-31 mm steel, which can ensure the overall rigidity and strength of the bench 1. The projection of the output end of the motor 2 along the axial direction of the column 102 (the end point) is outside the projection area formed by the base 101 along the axial direction of the column 102, specifically on the plane in the axial direction of the motor 2, the length of the test piece is less than the length of the bench 1; on the plane in the radial direction of the motor 2, there is a gap between the test piece and the bench 1, so that the setting can avoid the interference between the test piece and the bench 1 and affect the rotation of the test piece. Among them, the design height of the entire bench 1 is 2.5m, which can be compatible with the test pieces of 3m and below and the electric drive system with a power of 150Kw and below for assembly testing.
[0039] In one embodiment, referring to Figure 1 and Figure 2 The testing device further includes a rotation speed sensing mechanism 8, which is disposed on the test piece and / or the test stand 1 and is used to test the rotation speed of the test piece.
[0040] As an example, the test device also includes a rotation speed sensing mechanism 8. When installed, the rotation speed sensing mechanism 8 has two arrangements; the first arrangement is to be set on the test piece; the second arrangement is to be set on the test bench 1; the rotation speed sensing mechanism 8 is used to facilitate testing the rotation speed of the test piece, so as to monitor the performance of the test piece at different rotation speeds.
[0041] In one embodiment, referring to Figure 1 and Figure 2 The speed sensing mechanism 8 includes a photoelectric coupling sensor and a reflective strip; the photoelectric coupling sensor is arranged on the test stand 1 and is connected to the motor controller 3; the reflective strip is arranged on the test piece, and when the test piece rotates, the projection of the photoelectric coupling sensor along the axial direction of the motor 2 at least partially overlaps with the projection of the reflective strip along the axial direction of the motor 2.
[0042] As an example, the speed sensing mechanism 8 includes a photoelectric coupling sensor and a reflective strip; when installing, the photoelectric coupling sensor is set on the stand 1, corresponding to the motor 2, specifically set directly below the motor 2, and connected to the motor controller 3; the reflective strip is set on the test piece and connected to the motor controller 3; the reflective strip is set on the test piece, and when the test piece rotates, the projection of the photoelectric coupling sensor along the axial direction of the motor 2 overlaps with the projection of the reflective strip along the axial direction of the motor 2 at least partially, so that the photoelectric coupling sensor and the reflective strip cooperate to facilitate monitoring the speed of the test piece; the photoelectric coupling sensor will generate a pulse signal when irradiating the reflective strip on the test piece, and two pulse signals can be measured when the test piece rotates one circle, and the speed of the test piece is obtained by calculating the pulse signal. For example, the sampling period is 10ms, the number of pulses detected in one period is 10, and the speed is the number of pulses divided by the sampling period.
[0043] In one embodiment, referring to Figure 3 The test device also includes a control cabinet 9 ; the control cabinet 9 is arranged on the test stand 1 and is used to install a test sensor 10 .
[0044] As an example, the test device further includes a control cabinet 9 ; during installation, the control cabinet 9 is disposed on the stand 1 , which can provide support for installing the test sensor 10 .
[0045] In one embodiment, referring to Figure 3 The test sensor 10 includes a vibration sensor collector 1001 and / or a voltage and current sensor 1002 .
[0046] As an example, the test sensor 10 includes a vibration sensor collector 1001; the test piece will produce different vibration energies at different rotation speeds, and the vibration intensity of the test piece at different frequencies can be evaluated through the vibration sensor collector 1001 to achieve performance evaluation of the test piece. The test sensor 10 includes a voltage and current sensor 1002; the voltage and current sensor 1002 collects the voltage and current of the bus at the input end of the motor controller 3, and can evaluate the input power and efficiency of the test piece to achieve performance evaluation of the test piece.
[0047] In one embodiment, referring to Figure 1-3 The test piece includes a rotor 11 .
[0048] As an example, the test piece includes a rotor 11, which is connected to the output end of a motor 2 by bolts. The motor 2 drives the rotor 11 to rotate, and the motor controller 3 is used to control the motor 2 to output different speeds. When the rotor 11 rotates, torque and tension will be generated. The six-dimensional force sensor 4 can quickly and accurately measure the tension and torque of the rotor 11 in different directions at different speeds, thereby evaluating the power system performance of the rotor 11. The speed sensing mechanism 8 is used to facilitate the testing of the speed of the rotor 11; the rotor 11 will produce vibration energy of different sizes at different speeds, and the vibration sensor collector 1001 can be used to evaluate the vibration intensity of the rotor 11 at different frequencies; the voltage and current sensor 1002 collects the bus voltage and current at the input end of the motor controller 3, which are used to evaluate the input power and efficiency of the rotor 11; the water cooler provides constant temperature coolant for the motor 2 and the motor controller 3; the battery simulator provides a constant DC voltage for the motor controller 3; the industrial computer records all signals of the test bench 1, and has functions such as storage, calculation, and monitoring; the test device in this example can verify performance such as tension, torque, power, efficiency, and vibration. In the process, the ground effect of the rotor 11 can be overcome, and the changes in ambient temperature can be monitored to evaluate the impact on the performance of the rotor 11.
[0049] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.
Claims
1. A testing device, characterized in that: It includes a platform, a motor, a motor controller and a six-dimensional force sensor; the six-dimensional force sensor is arranged on the platform; The fixed end of the motor is connected to the six-dimensional force sensor, and the output end of the motor is used to install the test piece; The motor controller is arranged on the stand and connected to the motor to control the rotation of the motor.
2. The testing device according to claim 1, characterized in that: The testing device further includes a first tool; the first tool is fixed on the bench, and the six-dimensional force sensor is arranged on the first tool.
3. The testing device according to claim 1, characterized in that: The testing device also includes a second fixture; a first end of the second fixture is connected to the six-dimensional force sensor, and a second end of the second fixture is connected to the fixed end of the motor.
4. The testing device according to claim 3, characterized in that: The testing device also includes a vibration-damping pad; the vibration-damping pad is arranged between the first end of the second tooling and the six-dimensional force sensor.
5. The testing device according to claim 1, characterized in that: The platform comprises a base and a column; the first end of the column is fixed on the base, and the second end of the column is provided with the six-dimensional force sensor; The projection of the output end of the motor along the axial direction of the column is outside the projection area formed by the base along the axial direction of the column.
6. The testing device according to claim 1, characterized in that: The testing device further comprises a rotation speed sensing mechanism, which is disposed on the test piece and / or the bench and is used to test the rotation speed of the test piece.
7. The testing device according to claim 6, characterized in that: The speed sensing mechanism includes a photoelectric coupling sensor and a reflective strip; The photoelectric coupling sensor is arranged on the stand, corresponds to the motor, and is connected to the motor controller; The reflective strip is arranged on the test piece, and when the test piece rotates, the projection of the photoelectric coupling sensor along the axial direction of the motor at least partially overlaps with the projection of the reflective strip along the axial direction of the motor.
8. The testing device according to claim 1, characterized in that: The testing device further comprises a control cabinet; the control cabinet is arranged on the bench and is used for installing a testing sensor.
9. The testing device according to claim 8, characterized in that: The test sensor includes a vibration sensor collector and / or a voltage and current sensor.
10. The testing device according to claim 1, characterized in that: The object to be tested includes a rotor.