CN-121977831-A - Photovoltaic speed reducer service life testing equipment and testing method

CN121977831ACN 121977831 ACN121977831 ACN 121977831ACN-121977831-A

Abstract

The invention provides life test equipment and a test method for a photovoltaic speed reducer, wherein the life test equipment comprises a rack; the device comprises a frame, a photovoltaic speed reducer, a load mechanism and a resistance mechanism, wherein the photovoltaic speed reducer is used as a detected object and can be fixedly arranged on the frame, a first driving motor is arranged on the photovoltaic speed reducer and can drive an output shaft of the photovoltaic speed reducer to rotate, the load mechanism comprises a force arm vertically fixed on the output shaft of the photovoltaic speed reducer and a balancing weight arranged on the force arm and can apply a first torque to the photovoltaic speed reducer, the resistance mechanism is arranged on the frame and comprises a second driving motor, and an output end of the second driving motor is connected with the output shaft of the photovoltaic speed reducer and is used for applying a second torque so that the torque applied to the output shaft of the photovoltaic speed reducer tends to the required torque. The life test equipment of the photovoltaic speed reducer has the advantages of compact structure and small volume, and can accurately simulate the dynamic load state under the real working condition, thereby realizing accurate and reliable life test.

Inventors

JIN LIANGHUA
GUO XIAOJUN
LIN SUBEN
WANG BO
LIU XIAOBIN
ZHENG YI
DENG JINJIN
CHEN JIE
WU CHONG
FU HANJIE

Assignees

恒丰泰精密机械股份有限公司
浙江滨能科技有限公司

Dates

Publication Date: 20260505
Application Date: 20260408

Claims (10)

1. A photovoltaic retarder life testing device, comprising: A frame; the photovoltaic speed reducer is used as a detected object and can be fixedly arranged on the rack, and a first driving motor is arranged on the photovoltaic speed reducer and can drive an output shaft of the photovoltaic speed reducer to rotate; The load mechanism comprises a force arm vertically fixed on an output shaft of the photovoltaic speed reducer and a balancing weight arranged on the force arm, and can apply a first torque to the photovoltaic speed reducer; And the resistance mechanism is arranged on the frame and comprises a second driving motor, and the output end of the second driving motor is connected with the output shaft of the photovoltaic speed reducer and is used for applying a second torque so that the torque born by the output shaft of the photovoltaic speed reducer tends to the required torque.
2. The device for testing the life of the photovoltaic speed reducer according to claim 1, further comprising one or more of an encoder and an angle sensor, wherein the angle sensor is mounted on the force arm and is used for detecting the inclination of the force arm, and the encoder is mounted on the output shaft of the photovoltaic speed reducer and is used for detecting the swinging angle and the swinging times of the force arm.
3. The photovoltaic decelerator life test apparatus of claim 1, further comprising a torque sensor disposed between the output shaft of the second drive motor and the output shaft of the photovoltaic decelerator for detecting the magnitude of the second torque so that the resultant force of the first torque and the second torque tends to a desired torque value.
4. The photovoltaic speed reducer life test equipment according to claim 1, wherein the torque sensor is a dynamic torque sensor, and two ends of the dynamic torque sensor are respectively connected with the output shaft of the second driving motor and the output shaft of the photovoltaic speed reducer through flanges.
5. The photovoltaic decelerator life test apparatus of claim 1, further comprising a current detection unit for detecting a current of the first driving motor.
6. The photovoltaic decelerator life test apparatus of claim 1, wherein the second torque is in a direction opposite to the first torque.
7. The photovoltaic decelerator life test device as claimed in claim 1, wherein a second torque sensor is provided on the output shaft of the photovoltaic decelerator for detecting the torque actually applied to the output shaft.
8. A testing method using the photovoltaic retarder life testing apparatus according to any one of claims 1 to 7, comprising the steps of: S1, mounting, namely mounting the load mechanism on a horizontal output shaft of the photovoltaic speed reducer, and connecting an output shaft of a second driving motor with the output shaft of the photovoltaic speed reducer through a dynamic torque sensor; s2, setting a target torque curve according to the detection requirement; s3, loading an initial load, starting a first driving motor and driving an input shaft of a photovoltaic speed reducer to rotate, and driving an output shaft and a force arm to rotate to form a basic load torque; s4, dynamically simulating loading, and controlling the first driving motor to alternately run in the forward and reverse directions, so that the force arm swings reciprocally in a preset angle range; In the process, a difference value delta T between a first torque T1 generated by the load mechanism on an output shaft of the photovoltaic speed reducer and a target torque T3 is calculated in real time, the difference value delta T is compensated by a second driving motor, and a second torque T2 output by a dynamic torque sensor is collected in real time, so that the second torque T2 tends to delta T; S5, data acquisition, wherein in the testing process, the working current value I of the first driving motor, the second torque value of the dynamic torque sensor and the swinging times N are continuously recorded; s6, judging the service life, stopping testing after the reciprocating swing experiment of the preset times M is completed, disassembling the photovoltaic speed reducer, observing and recording deformation or abrasion conditions in the photovoltaic speed reducer, and judging whether the service life of the photovoltaic speed reducer is qualified or not according to the deformation and abrasion conditions and fluctuation conditions of the current value I of the first driving motor.
9. The method for testing the life test equipment of the photovoltaic speed reducer of claim 8, wherein the target torque curve is M (θ) =G.L.sin θ+M0; wherein G is the weight of the balancing weight, L is the length of the force arm, θ is the included angle between the force arm and the vertical line, and M0 is the preset offset torque.
10. The method for testing the life test equipment of the photovoltaic speed reducer according to claim 8, wherein after the disassembly is completed, tooth surfaces of the worm wheel and the worm in the photovoltaic speed reducer are scanned, actual profile appearance of the tooth surfaces is obtained, and abrasion characteristic parameters and abrasion rate are calculated.

Description

Photovoltaic speed reducer service life testing equipment and testing method Technical Field The invention relates to a photovoltaic speed reducer, in particular to life testing equipment and a life testing method for the photovoltaic speed reducer. Background In modern energy utilization, solar energy is becoming more and more important as a clean and sustainable energy source. Photovoltaic panels are used as key devices for converting solar energy into electrical energy, the efficiency of which directly affects the efficiency of the overall system. The conventional photovoltaic system mostly adopts a fixed-angle photovoltaic panel design, which means that the angle difference between the sunlight angle and the photovoltaic panel is large in different times throughout the year, resulting in lower energy capturing efficiency of the photovoltaic panel. A photovoltaic decelerator is a device designed to solve this problem. According to the solar photovoltaic panel, the direction of the photovoltaic panel can be automatically adjusted according to the position change of the sun, so that the photovoltaic panel can always receive solar light energy to the greatest extent. However, solar photovoltaic retarders are subject to various complex environments and load variations in long-term operation, and thus life testing thereof is of paramount importance. Conventional photovoltaic speed reducer life test equipment simulates the operating conditions of the speed reducer, mainly by providing a constant rotational speed and torque. For example, these devices maintain a fixed torque value during the test, and no matter how the rotation angle changes, the dynamic change condition of the output torque of the speed reducer during the actual operation cannot be truly reflected. This results in a certain gap between the test result and the actual field application situation, so that the reliability of the test result is not high enough. Disclosure of Invention The invention aims to solve the technical problem of providing the photovoltaic speed reducer life test equipment and the test method which have compact structure and small volume, can accurately simulate the dynamic load state under the real working condition, and further can realize the accurate test of the life. The invention provides a life test device of a photovoltaic speed reducer, which comprises the following components: A frame; the photovoltaic speed reducer is used as a detected object and can be fixedly arranged on the rack, and a first driving motor is arranged on the photovoltaic speed reducer and can drive an output shaft of the photovoltaic speed reducer to rotate; The load mechanism comprises a force arm vertically fixed on an output shaft of the photovoltaic speed reducer and a balancing weight arranged on the force arm, and can apply a first torque to the photovoltaic speed reducer; And the resistance mechanism is arranged on the frame and comprises a second driving motor, and the output end of the second driving motor is connected with the output shaft of the photovoltaic speed reducer and is used for applying a second torque so that the torque born by the output shaft of the photovoltaic speed reducer tends to the required torque. Further, the photovoltaic speed reducer further comprises one or more of an encoder or an angle sensor, wherein the angle sensor is arranged on the force arm and used for detecting the inclination of the force arm, and the encoder is arranged on an output shaft of the photovoltaic speed reducer and used for detecting the swinging angle and the swinging times of the force arm. Further, the two force arms are symmetrically arranged on the output shafts on two sides of the photovoltaic speed reducer, and the balancing weights are detachably arranged between the two force arms through the pin shafts. Further, the gravity center of the balancing weight is located on a straight line where the force arm is located. Further, the cross section of the output shaft of the photovoltaic speed reducer is polygonal, the head of the force arm is provided with a sleeve hole which corresponds to the output shaft and can realize radial limiting, and the balancing weight is detachably arranged at the tail of the force arm. Further, the device also comprises a torque sensor, wherein the torque sensor is arranged between the output shaft of the second driving motor and the output shaft of the photovoltaic speed reducer and is used for detecting the magnitude of the second torque so that the resultant force of the first torque and the second torque tends to a required torque value. Further, the direction of the second torque is opposite to the direction of the first torque. Further, the torque sensor is a dynamic torque sensor, and two ends of the dynamic torque sensor are respectively connected with the output shaft of the second driving motor and the output shaft of the photovoltaic speed reducer through flanges. Further, the output shaft o