Photovoltaic tracking support comprehensive torsion test platform

Abstract

The utility model discloses a comprehensive torsion test platform for a photovoltaic tracking support in the technical field of photovoltaic tracking supports. The test platform comprises a plurality of guide rails, and a driving system, a data acquisition system, a tooling system and a load system which are mounted on the plurality of guide rails, the driving system is provided with a first torque motor and a second torque motor which are respectively in direct connection with the first gear reducer and the second gear reducer, and the data acquisition system is provided with a torque tachometer which is connected with the first gear reducer and the second gear reducer. The input end of the loading system is connected with a first parallel gear reducer through a first coupler, the tool system is provided with a first fixed base and a second fixed base, the first fixed base is in key connection with the output end of a torque tachometer, the loading system is provided with a second parallel shaft gear reducer, and the output end of the loading system is connected with a magnetic powder brake through a fourth coupler. And the input end of the second parallel gear reducer is in key connection with the second fixed base. The utility model can solve the problems of low test efficiency, complex operation and the like of the test platform.

Description

Technical Field

[0001] The utility model relates to a photovoltaic tracking bracket comprehensive torsion testing platform, belonging to the technical field of photovoltaic tracking brackets. Background Art

[0002] At present, with the continuous development and application of photovoltaic power generation technology, photovoltaic tracking brackets, as an important part of photovoltaic modules, play the role of supporting and tracking sunlight. Due to harsh external working conditions, photovoltaic tracking brackets may be subjected to loads such as wind pressure and snow pressure, which will affect their stability and service life. Therefore, it is very important to test the structural stability and anti-torsion performance of photovoltaic tracking brackets. At present, there are some related testing equipment on the market, but most of them have problems such as low testing efficiency and complicated operation. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and to provide a photovoltaic tracking bracket comprehensive torsion test platform, which can solve the problems of low test efficiency and complex operation of the existing photovoltaic tracking bracket torsion test platform.

[0004] In order to solve the above technical problems, the utility model is implemented by adopting the following technical solutions:

[0005] A photovoltaic tracking bracket comprehensive torsion test platform comprises a plurality of guide rails, and a drive system, a data acquisition system, a tooling system and a load system installed on the plurality of guide rails, wherein the drive system is provided with a first torque motor, a second torque motor, a first gear reducer and a second gear reducer, wherein the first torque motor and the second torque motor are directly connected to the first gear reducer and the second gear reducer respectively, and a first parallel shaft gear reducer is further provided between the first gear reducer and the second gear reducer, the data acquisition system is provided with a torque tachometer, and the input end of the torque tachometer is connected to the first parallel shaft gear reducer through a first coupling, the tooling system is provided with a first fixed base and a second fixed base, and the first fixed base is key-connected to the output end of the torque tachometer, the load system is provided with a second parallel shaft gear reducer, and the output end of the second parallel shaft gear reducer is connected to a magnetic powder brake through a fourth coupling, and the input end of the second parallel shaft gear reducer is key-connected to the second fixed base.

[0006] Preferably, a first centrifugal fan (7) and a second centrifugal fan are respectively provided above the first torque motor and the second torque motor.

[0007] Preferably, the first parallel shaft gear reducer has a clutch function.

[0008] Preferably, the first parallel shaft gear reducer is connected to the first gear reducer via a second coupling, and the first parallel shaft gear reducer is connected to the second gear reducer via a third coupling.

[0009] Preferably, the first gear reducer and the second gear reducer are both helical gear-bevel gear combination structures.

[0010] Preferably, the data acquisition system is provided with a first strain gauge and a second strain gauge, both of which are adhered to the surface of the detection member, and the two ends of the detection member are respectively fixedly connected with a first synchronous pulley and a second synchronous pulley.

[0011] Preferably, the data acquisition system further comprises a first encoder and a second encoder, the first encoder and the second encoder are respectively fixed by a first encoder bracket and a second encoder bracket, and the first encoder bracket and the second encoder bracket are fixedly connected to the guide rail.

[0012] Preferably, the first encoder and the second encoder are drivingly connected to the first synchronous belt pulley and the second synchronous belt pulley on the detection member through the first synchronous belt and the second synchronous belt.

[0013] Preferably, the first fixed base and the second fixed base both have a fastening ring, and the two fixed bases are threadedly connected to the fastening ring.

[0014] Preferably, the threaded parts of the first fixed base and the second fixed base are each provided with at least four rectangular notches, and the outer wall of the fastening ring is distributed with at least four hexagonal handle mounting holes.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The present application uses a first torque motor, a second torque motor and a magnetic powder brake to cooperate with each other, and then generates torque on the detection part through multiple gear reducers. The two torque motors with different powers and the first parallel shaft gear reducer with clutch function arranged in the driving system can simultaneously meet the detection part's requirements for different test torques and speeds. The torque, speed, torsion angle and deformation data of the detection part are collected through the torque tachometer, the high-precision first encoder, the second encoder, the first strain tester and the second strain tester in the data acquisition system, and are accurately displayed in real time, thereby completing the precise detection of the torsional stiffness of the detection part, and also being able to accurately detect the fatigue life of the detection part. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a photovoltaic tracking bracket comprehensive torsion test platform provided by the utility model;

[0018] Figure 2 It is a structural schematic diagram of the fixing base of the detection member provided by the utility model;

[0019] Figure 3 It is a structural schematic diagram of a high-precision encoder and a strain gauge provided by the utility model;

[0020] In the figure: 1, guide rail; 2, first encoder; 3, torque tachometer; 4, first coupling; 5, first parallel shaft gear reducer; 6, first torque motor; 7, first centrifugal fan; 8, first gear reducer; 9, second coupling; 10, second centrifugal fan; 11, second torque motor; 12, third coupling; 13, second gear reducer; 14, first fixed base; 15, second fixed base; 16, second parallel shaft gear reducer; 17, fourth coupling; 18, magnetic powder brake; 19, second encoder; 20, hexagonal handle mounting hole; 21, fastening ring; 22, first synchronous pulley; 23, first synchronous belt; 24, first encoder bracket; 25, first strain gauge; 26, second strain gauge; 27, second encoder bracket; 28, second synchronous belt; 29, second synchronous pulley; 30, detection member; 31, rectangular notch. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.

[0022] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "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 accompanying drawings, and are only for the convenience of describing the present utility model 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 utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0023] 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 an indirect connection 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 by specific circumstances. Example 1

[0024] See also Figure 1 A photovoltaic tracking bracket comprehensive torsion test platform includes a plurality of guide rails, and a drive system, a data acquisition system, a tooling system and a load system installed on the guide rail 1. The load system and the tooling system are distributed on one side of the guide rail 1, and the drive system, the data acquisition system and the tooling system are installed on the other side of the guide rail 1.

[0025] Furthermore, the drive system is provided with a first torque motor 6, a second torque motor 11, a first gear reducer 8 and a second gear reducer 13. The torque motor 6 and the second torque motor 11 are directly connected to the first gear reducer 8 and the second gear reducer 13 respectively. In the embodiment of the present application, the structure of the present application is more compact through the direct connection, and the power loss of the motor can also be reduced.

[0026] Furthermore, a first parallel shaft gear reducer 5 is provided between the first gear reducer 8 and the second gear reducer 13 . The first parallel shaft gear reducer 5 has a clutch function. This arrangement enables power switching between the two torque motors to meet the torque and speed requirements of different detection components 30 .

[0027] Furthermore, the data acquisition system is provided with a torque tachometer 3, the input end of which is connected to the first parallel shaft gear reducer 5 through a first coupling 4, the tooling system is provided with a first fixed base 14 and a second fixed base 15, the first fixed base 14 is keyed to the output end of the torque tachometer 3, the load system is provided with a second parallel shaft gear reducer 16, the output end of the second parallel shaft gear reducer 16 is connected to the magnetic powder brake 18 through a fourth coupling 17, and the input end of the second parallel shaft gear reducer 16 is keyed to the second fixed base 15.

[0028] Furthermore, a first centrifugal fan 7 and a second centrifugal fan 10 are respectively provided above the first torque motor 6 and the second torque motor 11 for dissipating heat for the two torque motors, thereby protecting the motors and extending their service life.

[0029] In the embodiment of the present application, in order to facilitate the installation, maintenance and disassembly of the equipment, the first parallel shaft gear reducer 5 is connected to the first gear reducer 8 through the second coupling 9, and the first parallel shaft gear reducer 5 is connected to the second gear reducer 13 through the third coupling 12. Among them, the structure of the gear reducer in the present application adopts the form of a helical gear-bevel gear combination structure. By setting up this combination structure, the power output direction can be changed, the motor layout is convenient, space can be saved, and the overall structure is more compact. At the same time, the gear meshing overlap is large, which reduces the load on each pair of gears, improves the carrying capacity, and makes the transmission smooth and the noise is low.

[0030] See also Figure 3 The data acquisition system is provided with a first strain gauge 25 and a second strain gauge 26. The two gauges are adhered to the surface of the detection member 30, which is convenient for installation and removal of the detection member 30. At the same time, they are not limited by the material, size, etc. of the detection member 30, and can accurately collect the deformation data of the detection member 30.

[0031] Furthermore, the two ends of the detection member 30 are fixedly connected with a first synchronous pulley 22 and a second synchronous pulley 29 respectively. The data acquisition system also includes a high-precision first encoder 2 and a second encoder 19. The first encoder 2 and the second encoder 19 are first fixed by a first encoder bracket 24 and a second encoder bracket 27, and the first encoder bracket 24 and the second encoder bracket 27 are fixedly connected to the guide rail 1, and then the first synchronous belt 23 and the second synchronous belt 28 are connected to the first synchronous belt 22 and the second synchronous belt 29 on the detection member 30 for transmission, so as to stably obtain the accurate torsion angle of the detection member 30.

[0032] The first encoder 2 and the second encoder 19 used in the embodiment of the present invention are of the Omron E6B2-CWZ6C type.

[0033] See also Figure 2 The first fixed base 14 and the second fixed base 15 both have a fastening ring 21, and the two fixed bases are threadedly connected to the fastening ring 21, which can realize self-centering fixed clamping of the detection member 30. The threaded parts of the two fixed bases are provided with at least four rectangular notches 31. The embodiment of the present application is provided with four rectangular notches 31, thereby dividing the thread into four independent parts, which is convenient for adapting to detection members 30 of various sizes.

[0034] Furthermore, at least four hexagonal handle mounting holes 20 are distributed around the outer wall of the fastening ring 21. The embodiment of the present application is provided with four hexagonal handle mounting holes 20 for mounting a handle, which facilitates the installation, maintenance and disassembly of the two fixed bases and the fastening ring 21. Example 2

[0035] The photovoltaic tracking bracket comprehensive torsion test platform set up in this application adopts three test modes to test the detection member 30, which are as follows:

[0036] a. Static test

[0037] The first torque motor 6 and the second torque motor 11 provide a stable torque for the detection member 30, simulate the extreme load condition of the detection member 30, find out the maximum torque that the detection member 30 can bear, obtain the torque value of the detection member 30 in real time through the data acquisition system, and draw a torque-time change curve to obtain the breaking torque of the detection member 30. When the detection member 30 is the main beam of the photovoltaic tracking bracket, the torsion angle and deformation data of the main beam changing with the torque can also be monitored in real time.

[0038] b. Dynamic test

[0039] The first torque motor 6 and the second torque motor 11 provide a stable rotation speed for the detection part 30, and the magnetic powder brake 18 applies a load to the detection part 30 to provide a stable torque, simulating the actual working conditions of the detection part 30 under normal working conditions, and then obtaining the torque value and rotation speed value of the test piece in real time through the data acquisition system, and drawing the torque-time change curve and the torque-speed change curve.

[0040] c. Impact test

[0041] The first torque motor 6 and the second torque motor 11 provide stable torque for the detection part 30. The magnetic powder brake 18 periodically applies load to the detection part 30 in the form of a rectangular wave to simulate the impact load condition of the detection part 30. The torque value of the detection part 30 is obtained in real time through the data acquisition system, and a torque-time curve is drawn. At the same time, the number of impact loading times when the detection part 30 is damaged can also be obtained.

[0042] Working principle: When the photovoltaic tracking bracket comprehensive torsion test platform set up in the present application is put into use, the detection piece 30 is fixed by the first fixed base 14 and the second fixed base 15. The two fixed bases can realize the fixing and testing of detection pieces 30 of different sizes, thereby improving the universality and practicality of the test platform. The first strain tester 25 and the second strain tester 26 are adhered to the surface of the detection piece 30, and then the detection piece 30 and the high-precision first encoder 2 and second encoder 19 are connected through the first synchronous belt 23 and the second synchronous belt 28. After the two encoders are fixed, the first torque motor 6 and the second torque motor 11 are started, and the first gear reducer 8 and the second gear reducer 13 are transmitted to the first parallel shaft gear reducer 5, thereby transmitting power to the detection piece 30, and the magnetic powder brake 18 is transmitted through the second parallel shaft gear reducer 16 to provide a stable load for the detection piece 30, so that the detection piece 30 can maintain a constant torque and speed, thereby improving the stability and accuracy of the torsion test results.

[0043] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A photovoltaic tracking bracket comprehensive torsion test platform, characterized in that: The invention comprises a plurality of guide rails (1), and a drive system, a data acquisition system, a tooling system and a load system installed on the plurality of guide rails (1); the drive system is provided with a first torque motor (6), a second torque motor (11), a first gear reducer (8) and a second gear reducer (13); the first torque motor (6) and the second torque motor (11) are directly connected to the first gear reducer (8) and the second gear reducer (13) respectively; a first parallel shaft gear reducer (5) is further provided between the first gear reducer (8) and the second gear reducer (13); the data acquisition system is provided with a torque speed meter (3), the input end of the torque tachometer (3) is connected to the first parallel shaft gear reducer (5) through a first coupling (4), the tooling system is provided with a first fixed base (14) and a second fixed base (15), the first fixed base (14) is key-connected to the output end of the torque tachometer (3), the load system is provided with a second parallel shaft gear reducer (16), the output end of the second parallel shaft gear reducer (16) is connected to the magnetic powder brake (18) through a fourth coupling (17), and the input end of the second parallel shaft gear reducer (16) is key-connected to the second fixed base (15).

2. The photovoltaic tracking bracket comprehensive torsion test platform according to claim 1 is characterized in that: A first centrifugal fan (7) and a second centrifugal fan (10) are respectively arranged above the first torque motor (6) and the second torque motor (11).

3. The photovoltaic tracking bracket comprehensive torsion test platform according to claim 1 is characterized in that: The first parallel shaft gear reducer (5) has a clutch function.

4. The photovoltaic tracking bracket comprehensive torsion test platform according to claim 3 is characterized in that: The first parallel shaft gear reducer (5) is connected to the first gear reducer (8) via a second coupling (9), and the first parallel shaft gear reducer (5) is connected to the second gear reducer (13) via a third coupling (12).

5. The photovoltaic tracking bracket comprehensive torsion test platform according to claim 4 is characterized in that: The first gear reducer (8) and the second gear reducer (13) are both helical gear-bevel gear combination structures.

6. The photovoltaic tracking bracket comprehensive torsion test platform according to claim 1, characterized in that: The data acquisition system is provided with a first strain gauge (25) and a second strain gauge (26), the first strain gauge (25) and the second strain gauge (26) are both adhered to the surface of a detection member (30), and the two ends of the detection member (30) are respectively fixedly connected to a first synchronous pulley (22) and a second synchronous pulley (29).

7. The photovoltaic tracking bracket comprehensive torsion test platform according to claim 6, characterized in that: The data acquisition system further comprises a first encoder (2) and a second encoder (19), wherein the first encoder (2) and the second encoder (19) are respectively fixed by a first encoder bracket (24) and a second encoder bracket (27), and the first encoder bracket (24) and the second encoder bracket (27) are fixedly connected to the guide rail (1).

8. The photovoltaic tracking bracket comprehensive torsion test platform according to claim 7, characterized in that: The first encoder (2) and the second encoder (19) are connected to the first synchronous belt (22) and the second synchronous belt (29) on the detection member (30) through a first synchronous belt (23) and a second synchronous belt (28).

9. The photovoltaic tracking bracket comprehensive torsion test platform according to claim 1, characterized in that: The first fixed base (14) and the second fixed base (15) both have a fastening ring (21), and the two fixed bases are threadedly connected to the fastening ring (21).

10. The photovoltaic tracking bracket comprehensive torsion test platform according to claim 9, characterized in that: The threaded parts of the first fixed base (14) and the second fixed base (15) are each provided with at least four rectangular notches (31), and the outer wall of the fastening ring (21) is provided with at least four hexagonal handle mounting holes (20).

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