The invention discloses a comprehensive servo motor and harmonic speed reducer testing platform. The comprehensive servo motor and harmonic speed reducer testing platform comprises a machine frame, a vibration isolation platform, a linear guide rail and a magnetic powder brake, wherein the vibration isolation platform is arranged on the machine frame, and the linear guide rail and the magnetic powder brake are installed on the vibration isolation platform in a matched mode. The linear guide rail is provided with a wide-range torque revolving speed sensor, a first angle encoder, a harmonic speed reducer, a second angle encoder, a narrow-range torque revolving speed sensor and a servo motor. The comprehensive servo motor and harmonic speed reducer testing platform is simple and reasonable in structure, the load torque is not prone to fluctuation, data detecting accuracy is high, the system error is small, and assembling and adjusting are convenient.

Comprehensive servo motor and harmonic speed reducer testing platform

The invention relates to a measuring instrument for comprehensive performances of an RV (rot-vector) reducer and belongs to the technical field of precision testing and metering. The measuring instrument comprises two major parts, wherein a mechanical part mainly comprises a precision mounting support of the RV reducer, an input shaft system, an output shaft system, a torque motor, a shaft coupling, a torque sensor, a magnetic powder brake and a brake mounting support; a measuring and controlling part mainly comprises the torque motor, a controller, a driver, an encoder, a subdivision device, a DSI (digital speech interpolation) card, a data acquisition card and an industrial personal computer. The measuring instrument provided by the invention fills in the blank in testing tables for the comprehensive performances of the RV reducers at home and abroad, and has the advantages of reliable performances, good measurement repeability and accurate measured parameters.

Measuring instrument for comprehensive performances of RV (rot-vector) reducer

The invention belongs to the technical field of renewable energy sources and power generation, and especially relates to a wind-induced vibration piezoelectric generator which is suitable for low-power-consumption electronic devices, such as microsensors, micro-performers, minisize signal processors and emitters and the like, which need to obtain energy from external environment to carry out energy supplement. The piezoelectric generator is formed by three piezoelectric cantilever beams, a quality block, a fluid-stopping body, permanent magnets, a clamping plate, a support and a bridge rectifier circuit. According to the piezoelectric generator, the principle of galloping of the wind-induced fluid-stopping body and the piezoelectric effect are utilized to enable the wind energy to be converted into electric energy, and the converted electric energy is then stored in an energy storage component through a bridge rectifier. The coupling effect between the inner beam and the outer beam is utilized to enable the vibration energy of the outer energy to be transmitted to the inner beam, thereby not only preventing the outer beam from causing rupture damage due to large deformation, but also improving the output voltage of the inner beam. The piezoelectric generator is simple in structure, low in cost, high in power density, and is suitable for auxiliary power supply of the wireless sensors and low-power-consumption devices.

Wind-induced vibration piezoelectric generator

The invention discloses a speed reducer testing equipment which is used for testing the return difference and the elastic constant of a speed reducer to be tested The speed reducer testing equipment comprises a support platform, and a servo motor, an input rotating wheel, an output rotating wheel, load equipment and an angle sensor which are arranged on the support platform, wherein an output shaft of the servo motor is connected with one of a first side shaft and a second side shaft, which are opposite, of the input rotating wheel so as to drive the input rotating wheel to rotate around a first rotating shaft defined by the first side shaft or the second side shaft; the speed reducer to be tested and the angle sensor are respectively connected with a third side shaft and a fourth side shaft, which are opposite, of the output rotating wheel; the output rotating wheel is meshed with the input rotating wheel to further synchronously rotate around a second rotating shaft which is defined by the third side shaft or the fourth side shaft and parallel to the first rotating shaft; the angle sensor is used for obtaining a torque angle of the speed reducer to be tested Due to the adoption of the mode, according to the speed reducer testing equipment disclosed by the invention, the angle measurement precision of the speed reducer to be tested is improved

Speed reducer testing equipment

Wind turbine consisting of an anchoring to the ground or to a base and a mast, the natural oscillation frequency of which is purposely adjusted to the frequency of appearance of the air vortices or eddies produced after the collision of a laminar and stationary airflow against the surface thereof. The aeroelastic energy thus absorbed is converted into electrical energy due to the use of materials with high electromechanical coupling.

Vortex resonance wind turbine

The invention discloses a robot reducer transmission performance comprehensive testing device. The robot reducer transmission performance comprehensive testing device comprises a base (14), wherein a drive motor (1), a first coupling (2), a reducer input end torque angular displacement sensor (3), a second coupling (4), a to-be-tested reducer (5), a third coupling (6), a reducer output end torque angular displacement sensor (7), a fourth coupling (8) and a brake (9) are arranged on the base (14), share the same axis on the level direction, and are connected in sequence, and the drive motor (1), the reducer input end torque angular displacement sensor (3), the to-be-tested reducer (5) and the reducer output end torque angular displacement sensor (7) are respectively arranged on the base (14) through a motor support (10), a first support (11), a to-be-tested reducer support (12) and a second support (13). The robot reducer transmission performance comprehensive testing device meets the requirements of transmission performance tests such as high precision composite roller movable teeth transmission reducer ratio, return difference and efficiency, and thus testing efficiency and testing accuracy are high.

Robot reducer transmission performance comprehensive testing device

The utility model discloses a bistable structural piezoelectric energy gathering unit, which comprises a fixed base (5) and a fixed bearing (7) which is arranged on the fixed base (5), wherein a cantilever (9) which is connected with a fixed cover (8) is arranged on the fixed bearing (7), a piezoelectric piece (6) is arranged on the surface of the cantilever (9), the suspension end part of the cantilever is provided with a lateral permanent magnet (3), and the two ends of the permanent magnet (3) are provided with magnetic strips (11) with the same polarities as those of the ends; and a movable mass block (10) is arranged between the piezoelectric piece (6) and the permanent magnet (3) Due to the utility model, the oscillation amplitude can be increased, the energy gathering efficiency is improved, the bistable structural piezoelectric energy gathering unit has the characteristic of simple structure, and is applied on the power supply device of network and wireless communication equipment

Bistable structural piezoelectric energy gathering unit

The invention discloses a method for collecting piezoelectric energy by wind energy and a device thereof, wherein, a rotating carrier is driven by wind energy so that a permanent magnet on the rotating carrier produces a repulsive force on a fixed magnet on a cantilever beam to drive the cantilever beam to vibrate; and after a piezoelectric material on the cantilever beam is deformed, the energy is generated and then collected. In the invention, the wind energy is transformed into mechanical vibration energy to generate electricity and then supply power to a sensor or other low-power consumption systems, thus being free from restriction of a vibration source to realize convenient use. The device of the invention further has the characteristics of simple implementation structure. The invention can be used in preliminary power supplies of a plurality of wireless communication equipment and a charging apparatus for a small-sized rechargeable battery.

Method for collecting piezoelectric energy by wind energy and device thereof

Electro-hydraulic loading device for reducer test

The utility model discloses a piezoelectric energy collecting device. The piezoelectric energy collecting device comprises a beam-shaped structural body (3) which is fixed on a vibrating structural body (1) through a fixing cover (2), and a piezoelectric sheet (4) and a movable mass block (5), which are arranged on the beam-shaped structural body (3). In the piezoelectric energy collecting device, one or two ends of a cantilever beam are fixed on the vibrating structural body, the maximum position of the cantilever beam that generates a strain under different resonant frequencies is obtained according to the vibration mode of the cantilever beam, and the piezoelectric sheet is located in the maximum position to absorb the vibration energy in the surrounding environment within a wide frequency range, so as to greatly increase the efficiency of energy collection and conversion. The piezoelectric energy collecting device is applied to the power supply device of the network and wireless communication equipment.

Shen Yunde

Papers

Robot reducer transmission performance comprehensive testing device

Bistable structural piezoelectric energy gathering unit

Method for collecting piezoelectric energy by wind energy and device thereof

Electro-hydraulic loading device for reducer test

Piezoelectric energy collecting device