CN209910962U

CN209910962U - Universal joint testing system

Info

Publication number: CN209910962U
Application number: CN201920876123.XU
Authority: CN
Inventors: 杨海江
Original assignee: WUXI NASCH CONTROL AND TEST TECHNOLOGY Co Ltd
Current assignee: WUXI NASCH CONTROL AND TEST TECHNOLOGY Co Ltd
Priority date: 2019-06-11
Filing date: 2019-06-11
Publication date: 2020-01-07
Anticipated expiration: 2029-06-11

Abstract

The utility model belongs to the technical field of the universal joint life-span test and specifically relates to a universal joint test system is related to, including first rack and second rack, all be equipped with rotatable disc platform on first rack and the second rack, be fixed with the rotational speed control motor on the disc platform of first rack, be fixed with the load control motor on the disc platform of second rack, the load control motor has rotational speed torque sensor through the coupling joint, and rotational speed control motor and rotational speed torque sensor are respectively through universal joint of coupling joint, connect the straight-bar between two universal joints. The utility model utilizes the rotatable load platform to satisfy the loading of the universal joint at different angles, realizes the free adjustment of torque and rotating speed, and can realize the cycle test of the universal joint; the universal joint is freely loaded by adopting a speed reducing motor dragging mode, the fatigue test of 15000 load cyclic changes can be met, and a long-time automatic loading experiment is realized by controlling and recording the torque and the rotating speed.

Description

Universal joint testing system

Technical Field

The utility model belongs to the technical field of the universal joint life-span test and specifically relates to a universal joint test system is related to.

Background

The panel turnover mechanism of the photovoltaic power generation panel needs a universal joint connecting rod to realize rotation of the solar photovoltaic panel, and the design service life of the mechanism is 30 years and depends on the service life of a universal joint. In order to verify the service life of the universal joint, a set of loading test system is needed to realize the fatigue life test of the universal joint. At present, no professional equipment is available in China to test the service life of the universal joint, the service life of the universal joint can be guaranteed only by design experience and materials, but no effective verification means exists, so that manufacturers cannot provide relevant test data, and customers cannot effectively confirm whether the service life of the universal joint meets 30 years.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a universal joint test system, it has test universal joint life's function.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: the utility model provides a universal joint test system, includes first rack and second rack, all be equipped with rotatable disc platform on first rack and the second rack, be fixed with the rotational speed control motor on the disc platform of first rack, be fixed with the load control motor on the disc platform of second rack, the load control motor has rotational speed torque sensor through the coupling joint, rotational speed control motor and rotational speed torque sensor are respectively through a universal joint of coupling joint, be connected with a straight-bar between two universal joints.

By adopting the technical scheme, the two disc platforms are rotated, the universal joint is twisted for a certain angle, then the rotation speed is utilized to control the motor to circulate at various different rotation speeds, and the load is utilized to control the motor to adjust the torque in a sine wave curve manner; the test software collects torque and rotating speed signals fed back by the rotating speed and torque sensor in real time, a safety threshold value is set, and once the universal joint is damaged in an experiment, the test is automatically stopped. If the universal joint is not broken after the experiment is carried out for a certain time (such as 15 days), the service life of the universal joint can reach the design standard of 30 years.

Preferably, the disc platform is connected with the first rack and the second rack in a rotating mode, the first bevel gear is coaxially fixed on the lower surface of the disc platform, round holes exposing the first bevel gear are formed in the first rack and the second rack, a rotating shaft is arranged on the first rack and the second rack in a rotating mode, the second bevel gear is coaxially fixed on the rotating shaft, and the first bevel gear is vertically meshed with the second bevel gear.

By adopting the technical scheme, the rotating shaft is rotated, and the first helical gear can drive the second helical gear and the disc platform to rotate, so that the universal joint is twisted.

Preferably, a circular boss is coaxially fixed on the lower surface of the disc platform, the circular boss is matched with the circular hole, and the first helical gear is fixed on the lower surface of the circular boss.

Through adopting above-mentioned technical scheme, circular boss and round hole normal running fit can make disc platform rotate steadily.

Preferably, a hand wheel is fixed at the end of the rotating shaft.

Through adopting above-mentioned technical scheme, the hand wheel has made things convenient for manual rotatory pivot.

Preferably, the edge of the disc platform is fixed with a pointer, the pointer is arranged along the diameter direction of the disc platform, and the upper surfaces of the first rack and the second rack are provided with scales around the disc platform.

By adopting the technical scheme, the pointer clearly points out the rotation angle of the disc platform, and the rotation angle of the disc platform is accurately controlled.

Preferably, the scale ranges from 0 to 90 °.

By adopting the technical scheme, the universal joint can be adjusted at a free angle of 0-45 degrees by rotating the disc platform, and the universal joint is tested at different angles.

Preferably, speed reducers are mounted on rotating shafts of the rotating speed control motor and the load control motor.

By adopting the technical scheme, the rotating speed is reduced by utilizing the speed reducer, and the working state of the universal joint is simulated.

Preferably, the device also comprises a control cabinet, wherein a rotating speed adjusting device, a torque adjusting device and a controller are arranged in the control cabinet, the rotating speed adjusting device is electrically connected with a rotating speed control motor, and the torque adjusting device is electrically connected with a load control motor.

By adopting the technical scheme, the rotating speed adjusting device is controlled by computer software, and the rotating speed adjusting device enables the rotating speed control motor to output different rotating speeds; the torque adjusting device is controlled by computer software, and the torque adjusting device enables the load control motor to adjust the torque in a sine wave curve mode.

To sum up, the utility model discloses a beneficial technological effect does:

1. the rotatable load platform is utilized to meet the loading of the universal joint at different angles, the free adjustment of torque and rotating speed is realized, and the cyclic test of the universal joint can be realized;

2. the universal joint is freely loaded by adopting a speed reducing motor dragging mode, the fatigue test of 15000 load cyclic changes can be met, and a long-time automatic loading experiment is realized by controlling and recording the torque and the rotating speed.

Drawings

FIG. 1 is a schematic diagram of the overall construction of a gimbal test system;

FIG. 2 is a schematic structural view of a second stage;

fig. 3 is a schematic structural view of the disc platform.

In the figure, 1, a first stage; 2. a second stage; 3. a disc platform; 31. a circular boss; 4. a rotational speed control motor; 5. a load control motor; 6. a rotational speed torque sensor; 7. a universal joint; 8. a straight rod; 9. a circular hole; 10. a first helical gear; 11. a second helical gear; 12. a rotating shaft; 13. a hand wheel; 14. a pointer; 15. calibration; 16. a speed reducer; 17. a coupling; 18. a control cabinet.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b): fig. 1 is the utility model discloses a universal joint test system, including switch board 18 and the same first platform 1 of structure and second platform 2. The centers of the table tops of the first table frame 1 and the second table frame 2 are provided with round holes 9 (see figure 2), and the table tops of the first table frame 1 and the second table frame 2 are provided with disc platforms 3.

As shown in fig. 3, a circular boss 31 is formed integrally with the lower surface of the disc deck 3.

As shown in fig. 2, the circular boss 31 is recessed in the circular hole 9 and is rotatably fitted to the circular hole 9. A first helical gear 10 coaxial with the circular boss 31 is fixed in the center of the lower surface of the circular boss 31, bearing seats are fixed on the first rack 1 and the second rack 2, a rotating shaft 12 is arranged in each bearing seat, a second helical gear 11 is coaxially fixed on the rotating shaft 12, the central axis of the rotating shaft 12 is parallel to the lower surface of the circular boss 31, and the first helical gear 10 is vertically meshed with the second helical gear 11. A hand wheel 13 is fixed at one end of the rotating shaft 12, and the rotating shaft 12 can be driven to rotate by rotating the hand wheel 13, so that the second helical gear 11 drives the first helical gear 10 to rotate, and finally the circular boss 31 rotates.

As shown in fig. 1, a rotation speed control motor 4 is fixed on the disc platform 3 of the first gantry 1, a speed reducer 16 is drivingly connected to a rotation shaft of the rotation speed control motor 4, and an output shaft of the speed reducer 16 is connected to a universal joint 7 through a first coupling 17. A load control motor 5 is fixed on the disc platform 3 of the second rack 2, another speed reducer 16 is connected to the rotating shaft of the load control motor 5 in a driving mode, the output shaft of the speed reducer 16 is connected with a rotating speed and torque sensor 6 through a second coupler 17, the rotating speed and torque sensor 6 is connected with a second universal joint 7 through a third coupler 17, and a straight rod 8 is connected between the two universal joints 7.

As shown in fig. 1, the upper surfaces of the first and second stages 1 and 2 are each engraved with a scale 15 in the range of 0 to 90 ° around the disc table 3, and a pointer 14 is fixed to the edge of the disc table 3, the pointer 14 being disposed in the diameter direction of the disc table 3. By rotating the disc platform 3, the universal joint 7 can be adjusted at a free angle within the range of 0-45 degrees, and the universal joint 7 is tested at different angles.

The implementation principle of the embodiment is as follows: rotating the two disc platforms 3, twisting the universal joint 7 by a certain angle, then utilizing the rotating speed to control the motor 4 to circulate at various different rotating speeds, and utilizing the load to control the motor 5 to adjust the torque in a sine wave curve manner; the computer test software collects the torque and rotating speed signals fed back by the rotating speed and torque sensor 6 in real time, and a safety threshold value is set, so that once the universal joint 7 is damaged in an experiment, the test is automatically stopped. If the universal joint 7 is not broken after the experiment is carried out for a certain time, the service life of the universal joint 7 can reach the corresponding design standard.

The rotating speed adjusting device is controlled by computer software in the control cabinet 18, and the rotating speed adjusting device enables the rotating speed control motor 4 to output different rotating speeds; the torque adjusting device is controlled by computer software, and the torque adjusting device enables the load control motor 5 to adjust the torque in a sine wave curve mode.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A gimbal test system comprising a first stage (1) and a second stage (2), characterized in that: all be equipped with rotatable disc platform (3) on first rack (1) and second rack (2), be fixed with speed control motor (4) on disc platform (3) of first rack (1), be fixed with load control motor (5) on disc platform (3) of second rack (2), load control motor (5) are connected with rotational speed torque sensor (6) through shaft coupling (17), one universal joint (7) are connected through shaft coupling (17) respectively in speed control motor (4) and rotational speed torque sensor (6), be connected with a straight-bar (8) between two universal joints (7).

2. The gimbal test system of claim 1, wherein: disc platform (3) and first rack (1), second rack (2) are the rotation and are connected, and the lower surface coaxial fixation of disc platform (3) has first helical gear (10), all is equipped with round hole (9) that expose first helical gear (10) on first rack (1) and second rack (2), all rotates on first rack (1) and second rack (2) and is equipped with pivot (12), and coaxial fixation has second helical gear (11) on pivot (12), and first helical gear (10) and second helical gear (11) perpendicular meshing.

3. The gimbal test system of claim 2, wherein: a circular boss (31) is coaxially fixed on the lower surface of the disc platform (3), the circular boss (31) is matched with the circular hole (9), and the first helical gear (10) is fixed on the lower surface of the circular boss (31).

4. The gimbal test system of claim 2, wherein: and a hand wheel (13) is fixed at the end part of the rotating shaft (12).

5. The gimbal test system of claim 1, wherein: the edge of disc platform (3) is fixed with pointer (14), and pointer (14) set up along the diameter direction of disc platform (3), and the upper surface of first rack (1) and second rack (2) all is equipped with scale (15) around disc platform (3).

6. The gimbal test system of claim 5, wherein: the scale (15) ranges from 0 to 90 degrees.

7. The gimbal test system of claim 1, wherein: and speed reducers (16) are respectively arranged on the rotating shafts of the rotating speed control motor (4) and the load control motor (5).

8. The gimbal test system of claim 1, wherein: the device is characterized by further comprising a control cabinet (18), wherein a rotating speed adjusting device, a torque adjusting device and a controller are arranged in the control cabinet (18), the rotating speed adjusting device is electrically connected with the rotating speed control motor (4), and the torque adjusting device is electrically connected with the load control motor (5).