Fatigue resistance testing device of photovoltaic support

Abstract

The utility model relates to the technical field of photovoltaic equipment detection, and discloses a photovoltaic support fatigue resistance testing device which comprises a bottom frame, a motor is fixedly installed on the outer side of the bottom frame, a rotating rod is fixedly connected to an output shaft of the motor, a crank is fixedly connected to the end face of the rotating rod, a first sliding groove is formed in the side face, away from the rotating rod, of the crank, and a second sliding groove is formed in the side face of the crank. And an insertion hole is formed in the groove wall of the first sliding groove. According to the utility model, the button is pulled to separate the insertion rod from the insertion holes at different positions, and then the moving rod is pushed to slide in the first chute, so that the eccentric distance of the moving rod on the crank is adjusted, the moving distance of the impact block is changed, and the fatigue resistance test of photovoltaic supports with different lengths after being impacted can be met; the application range of the device is greatly expanded, it is avoided that different testing devices are independently designed for photovoltaic supports of different specifications, the testing cost is reduced, and the universality and practicability of the device are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic equipment detection technical field especially relates to a kind of fatigue resistance testing device of photovoltaic support. BACKGROUND

[0002] The main purpose is to evaluate the performance of photovoltaic support under long-term cyclic loading, to determine the number of cycles that photovoltaic support can withstand and the fatigue life under different load levels by simulating wind load, seismic load and stress changes caused by factors such as temperature changes in actual working conditions, to predict whether fatigue cracks, fractures and other failure phenomena will occur within the actual service life, to provide an important basis for the design, material selection, production and quality control of photovoltaic support, to ensure that photovoltaic support can operate safely and reliably within the service life of the entire photovoltaic system.

[0003] In the prior art, when using the conventional photovoltaic support fatigue resistance testing device, first, the testing equipment needs to be adjusted according to the specific size and shape of the photovoltaic support. In general, for photovoltaic supports of different lengths, widths and thicknesses, different fixture assemblies need to be provided for the testing device. For example, for longer photovoltaic supports, longer support arms and larger fixtures may need to be replaced to fix the support to ensure that it can be placed stably during testing. These fixtures are often connected through complex mechanical structures and a large number of bolts and nuts, and the operator needs to spend a lot of time and effort to adjust and install them.

[0004] The impact part of the existing device is usually fixed in design, and cannot flexibly adjust the force and frequency of impact, as well as the range of impact. When testing a photovoltaic support of longer length, impact components with larger stroke need to be replaced, which involves disassembling and reinstalling part or even all of the impact device, and may require complex operations to adjust the size of the transmission components, which undoubtedly increases the complexity and cost of testing. Therefore, a photovoltaic support fatigue resistance testing device is proposed to solve the above problems. SUMMARY

[0005] To make up for the above shortcomings, the utility model provides a kind of photovoltaic support fatigue resistance testing device, to improve the problem of needing to be equipped with multiple fixtures and fixed non-adjustable power transmission mechanism in the prior art.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: a kind of fatigue resistance testing device of photovoltaic support, including chassis, motor is fixedly installed on the outer side of the chassis, the output shaft of the motor is fixedly connected with rotating rod, the end surface of the rotating rod is fixedly connected with crank, the side away from rotating rod of the crank is equipped with No.

[0007] As further description of the above technical solution: the inner side of the chassis is provided with positioning assembly, the positioning assembly includes movable rod, the side of the chassis is fixedly connected with extension frame, one end of the movable rod is movably penetrated through the inner side of extension frame and extends outward, the surface of the movable rod is provided with No.

[0008] As further description of the above technical solution: the inner wall of the two sides of the chassis is provided with sliding assembly, the sliding assembly includes pulley, the inner wall of the two sides of the chassis is respectively equipped with strip slot, the pulley is respectively fixedly connected in the two side groove walls of strip slot, the number of pulley is several and is symmetrically arranged at equal intervals, the two sides of the impact block are respectively equipped with limit slot, the pulley is in contact with the groove wall of limit slot and is slidably connected.

[0009] As further description of the above technical solution: the inside of the movable rod is equipped with No.

[0010] As further description of the above technical solution: the surface of the plug rod is provided with No.

[0011] As further description of the above technical solution: the number of the plug hole is three, three the plug hole is symmetrically arranged at equal intervals, the plug rod is respectively matched with three the plug hole.

[0012] As a further description of the above technical scheme: the inner wall of the extension frame is fixedly connected with a rubber block, one side of the photovoltaic support is in contact with the side surface of the rubber block, and the other side of the photovoltaic support is in contact with the front surface of the impact block.

[0013] As a further description of the above technical scheme: the movable rod, the second spring and the inclined block form a group, and there are two groups, and the two groups are symmetrically arranged left and right.

[0014] The utility model has the advantages of the following beneficial effects:

[0015] 1. In the utility model, the plug rod is separated from the jack of different positions by pulling the button, and then the movable rod is pushed to slide in the first sliding slot, so that the eccentric distance of the movable rod in the crank is adjusted, the moving distance of the impact block is changed, the fatigue resistance test of the photovoltaic support after being impacted can be met, the application range of the device is greatly expanded, different test devices are not designed for photovoltaic supports of different specifications, the test cost is reduced, and the universality and practicality of the equipment are improved.

[0016] 2. In the utility model, the positioning assembly is arranged, the inclined surface of the inclined block is matched with the photovoltaic support, and the elastic reset action of the second spring is utilized, so that the device can adapt to photovoltaic supports of different widths, the position stability during the test is ensured, the position adjustment and test operation can be flexibly carried out for photovoltaic supports of different sizes, and diversified test requirements can be met. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 A front view of a fatigue resistance test device for a photovoltaic support is provided for the utility model;

[0018] Figure 2 A structural schematic view of a fatigue resistance test device for a photovoltaic support is provided for the utility model;

[0019] Figure 3 A parts schematic view of a motor, a rotating rod, a crank, a connecting rod and a collision block of a fatigue resistance test device for a photovoltaic support is provided for the utility model;

[0020] Figure 4 A bottom view sectional view of a crank and a connecting rod of a fatigue resistance test device for a photovoltaic support is provided for the utility model;

[0021] Figure 5 An enlarged view of A of a fatigue resistance test device for a photovoltaic support is provided for the utility model.

[0022] LEGEND:

[0023] 1, chassis; 2, motor; 3, crank; 4, connecting rod; 5, impact block; 6, extension frame; 7, pulley; 8, photovoltaic support; 9, rotating rod; 10, moving rod; 11, plug rod; 12, button; 13, No. 1 spring; 14, No. 1 sliding groove; 15, limiting ring; 16, jack; 17, limiting groove; 18, rubber block; 19, movable rod; 20, No. 2 spring; 21, inclined block. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] Referring to Figure 1 , Figure 3 , Figure 4The utility model provides a kind of fatigue resistance testing device of photovoltaic support 8: a kind of embodiment provided by the utility model: a kind of fatigue resistance testing device of photovoltaic support 8, including chassis 1, chassis 1 provides basic support for entire device, bearing other components, guarantee the overall structural stability of device, provide a stable platform for subsequent test operation, the outside of chassis 1 is fixedly installed with motor 2, motor 2 is the power source of device, the required power of entire test device is provided by the rotation of motor, drive the movement of subsequent component, to realize the impact test of photovoltaic support, the output shaft of motor 2 is fixedly connected with rotating rod 9, rotating rod 9 is as the output component of motor 2, the rotational movement of motor is transmitted to the crank 3 of subsequent connection, so that the power of entire device is transmitted and converted, the end surface of rotating rod 9 is fixedly connected with crank 3, crank 3 is connected with rotating rod 9, do circular motion under the drive of motor 2, the rotational movement is converted into the reciprocating linear motion of subsequent component by the rotation of crank 3, provide basic motion condition for the linear reciprocating motion of impact block, the side surface of crank 3 away from rotating rod 9 is provided with No. 1 sliding slot 14, No. 1 sliding slot 14 provides space for the sliding of moving rod 10, limit the movement track of moving rod 10, guarantee that it can only slide along the direction of sliding slot, simultaneously provide structural basis for adjusting the movement range of impact block 5, the slot wall of No. 1 sliding slot 14 is provided with jack 16, the setting of jack 16 is used to cooperate with inserting rod 11, by inserting rod 11 insertion different position's jack 16, can realize the locking and adjustment of the position of moving rod 10, to control the stroke of impact block 5, to adapt to different test needs, the slot wall of No. 1 sliding slot 14 is slidably connected with moving rod 10, moving rod 10 slides in No. 1 sliding slot 14, is the intermediate component of the circular motion of crank 3 into linear motion, the adjustment of its position can change the movement state of connecting rod 4, in turn influence the movement range of impact block 5, the end surface of moving rod 10 is movably penetrated and connected with inserting rod 11, can realize the separation and insertion with jack 16 under the operation of button 12, is the key component of adjusting the position of moving rod 10, the number of jack 16 is three, three jacks 16 are symmetrically arranged at equal intervals, multiple equidistant symmetric jacks 16 provide multiple position choices for moving rod 10, facilitate the different active distance of impact block 5 is adjusted, satisfy different test conditions, improve the flexibility and applicability of device, inserting rod 11 is arranged with three jacks 16 respectively, guarantee that inserting rod 11 can be accurately inserted into different position's jack 16, realize the positioning and locking of moving rod 10, ensure that the movement range of impact block 5 remains stable during testing, the inside of moving rod 10 is provided with No. 2 sliding slot, No. 2 sliding slot provides space for the sliding of limiting ring 15, plays the role of guiding and limiting to inserting rod 11, guarantee that inserting rod 11 does not deviate during movement, guarantee the stability of entire adjustment system, the surface of inserting rod 11 is fixedly sleeved with limiting ring 15, limiting ring 15 slides in No. 2 sliding slot, prevent inserting rod 11 from coming out of moving rod 10, simultaneously guarantee the movement stability of inserting rod 11 in axial direction, the edge of limiting ring 15 is slidably connected with the slot wall of No. 2 sliding slot,The surface of the insertion rod 11 is sleeved with a first spring 13, which provides a reset force for the insertion rod 11. When the insertion rod 11 is pulled out, the insertion rod 11 can automatically reset when it is not subjected to external force, facilitating the next locking operation of the moving rod 10. One end of the first spring 13 is fixedly connected with the groove wall of the limiting groove 17, which clearly defines the fixed position of the two ends of the first spring 13, ensures that the spring can normally play a reset function, and makes the movement of the insertion rod 11 more reliable. The other end of the first spring 13 is fixedly connected with the end face of the limiting ring 15. The groove wall of the sliding groove is provided with a insertion hole 16, which further emphasizes the position of the insertion hole 16, so that its structure cooperates with the whole adjusting system to provide convenience for adjusting the movement range of the impact block 5. One end of the insertion rod 11 is fixedly connected with a button 12, which facilitates the operation of the insertion rod 11 by the operator. By pulling the button 12, the insertion rod 11 and the insertion hole 16 can be easily separated, which is simple and convenient, and is convenient for adjusting the movement range of the impact block 5. The other end of the insertion rod 11 is inserted with the groove wall of the insertion slot, so that the insertion rod 11 can be stably inserted into the insertion hole 16, ensuring that the moving rod 10 can be firmly locked when it needs to be locked, ensuring the accuracy and stability of the test. The inner side of the chassis 1 is in contact and slidingly connected with the impact block 5, which is a component directly acting on the photovoltaic support 8. Under the driving of the device, the photovoltaic support 8 is impacted, and the fatigue impact in actual use is simulated through repeated impact, so as to test the fatigue resistance of the photovoltaic support 8. A connecting rod 4 is arranged between the impact block 5 and the moving rod 10. The connecting rod 4 converts the linear motion of the moving rod 10 into the linear motion of the impact block 5, and transmits power from the moving rod 10 to the impact block 5, so that the impact block 5 can make linear reciprocating motion inside the chassis 1. One end of the connecting rod 4 is rotatably connected with the surface of the moving rod 10, and the other end of the connecting rod 4 is rotatably connected with the inner side of the impact block 5. Through the rotary connection, it is ensured that the connecting rod 4 can rotate flexibly when transmitting power, reducing the jamming in the movement process, ensuring the continuity and smoothness of the movement. The inner side of the chassis 1 is placed with the photovoltaic support 8, which is the object to be tested and placed inside the chassis 1, within the impact range of the impact block 5, to accept repeated impact test of the impact block 5.

[0026] Referring to Figure 2 , Figure 5The inner side of the chassis 1 is provided with a positioning assembly, which is used for positioning the photovoltaic support 8 and ensuring that the photovoltaic support 8 remains in the correct position during the test, so as to avoid affecting the accuracy of the test result due to position deviation. The positioning assembly comprises a movable rod 19, which is an important component of the positioning assembly and cooperates with an inclined block 21 and a second spring 20 to provide support and guidance for the positioning of the photovoltaic support 8. The side of the chassis 1 is fixedly connected with an extension frame 6, which provides mounting positions for the movable rod 19, the inclined block 21 and other components and also provides support and limitation for the placement of the photovoltaic support 8, so as to ensure that the photovoltaic support 8 can be correctly placed in the test position. One end of the movable rod 19 is movably penetrated through the inner side of the extension frame 6 and extends outward. The penetration of the movable rod 19 through the extension frame 6 enables the inclined block 21 to move along the movable rod 19 when subjected to force, so as to ensure the linearity and stability of the movement of the inclined block 21 and provide guidance for subsequent resetting. The surface of the movable rod 19 is sleeved with the second spring 20, which provides a resetting force for the inclined block 21. After the photovoltaic support 8 is placed in position, the second spring 20 can push the inclined block 21 to reset and clamp the photovoltaic support 8, so as to ensure the stability of the position of the photovoltaic support 8. The other end of the movable rod 19 is fixedly connected with the inclined block 21, which is in contact with the side of the photovoltaic support 8. The inclined surface of the inclined block 21 facilitates the placement of the photovoltaic support 8. Meanwhile, through the movement of the inclined block 21 and the action of the second spring 20, the inclined block 21 can adapt to photovoltaic supports 8 of different widths and realize the positioning of photovoltaic supports 8 of different specifications. The bottom of the inclined block 21 is in contact with the inner wall of the extension frame 6, so as to ensure the stability of the inclined block 21 during movement and avoid upward and downward deviation of the inclined block 21 during movement, thereby ensuring the reliability of the entire positioning system. The two sides of the photovoltaic support 8 are in contact with the side adjacent to the inclined block 21, and the inclined block 21 clamps the two sides of the photovoltaic support 8, so as to ensure the stability of the position of the photovoltaic support 8 in the horizontal direction and prevent the photovoltaic support 8 from deviating left and right when subjected to impact. The inner wall of the extension frame 6 is fixedly connected with a rubber block 18, which is in contact with one side of the photovoltaic support 8. On the one hand, the rubber block 18 can play a buffering role and reduce the damage that the photovoltaic support 8 may suffer during positioning. On the other hand, the rubber block 18 provides a positioning reference for one end of the photovoltaic support 8, so as to ensure the accuracy of the position of the photovoltaic support 8. One side of the photovoltaic support 8 is in contact with the side of the rubber block 18, which provides support and positioning for one end of the photovoltaic support 8 and ensures the position accuracy of the photovoltaic support 8 in the chassis 1. Meanwhile, the characteristics of rubber can reduce the wear of the photovoltaic support 8. The other side of the photovoltaic support 8 is in contact with the front surface of the impact block 5, which clearly defines the contact position of the photovoltaic support 8 and the impact block 5 and enables the impact block 5 to accurately impact the photovoltaic support 8, thereby ensuring the effectiveness of the test. The movable rod 19, the second spring 20 and the inclined block 21 form a group, and there are two groups. The two groups of movable rods 19, second springs 20 and inclined blocks 21 are symmetrically arranged on the left and right. Through the two groups of symmetrically arranged positioning assemblies, the photovoltaic support 8 is positioned from both sides, so as to ensure the symmetry of the position of the photovoltaic support 8 in the chassis 1.The force is uniform, which further improves the accuracy and reliability of the test.

[0027] With reference to Figure 1 , Figure 2 The two side inner walls of the base frame 1 are provided with sliding assemblies. The sliding assemblies are arranged to reduce the friction of the impact block 5 when moving in the base frame 1, and improve the smoothness and stability of the movement of the impact block 5. The sliding assembly comprises a pulley 7, which is a key component for reducing friction. By rolling instead of sliding, the friction between the impact block 5 and the base frame 1 is effectively reduced, ensuring smooth movement of the impact block 5. The two side inner walls of the base frame 1 are respectively provided with a strip-shaped groove, which provides an installation position for the pulley 7 and limits the installation range of the pulley 7, ensuring that the pulley 7 functions correctly in the correct position. The pulley 7 is fixedly connected to the two side groove walls of the strip-shaped groove, ensuring firm installation of the pulley 7 and preventing displacement of the pulley 7 during use, thereby ensuring that the pulley 7 can normally provide support and reduce friction for the impact block 5. The number of pulleys 7 is several and they are symmetrically arranged at equal intervals. The multiple pulleys 7 arranged at equal intervals can evenly share the weight of the impact block 5, making the friction experienced by the impact block 5 during movement more uniform and further improving the stability of the movement of the impact block 5. Limiting grooves 17 are respectively arranged on the two sides of the impact block 5. The limiting grooves 17 provide space for the rolling of the pulleys 7 and limit the rolling track of the pulleys 7, ensuring that the pulleys 7 contact the impact block 5 in the correct position and preventing the pulleys 7 from coming out. The pulleys 7 are in sliding connection with the groove walls of the limiting grooves 17, ensuring correct connection between the pulleys 7 and the impact block 5, so that the pulleys 7 can roll in the limiting grooves 17, reducing the friction of the impact block 5 during movement and improving the service life of the device and the reliability of the test.

[0028] Working principle: the photovoltaic support 8 is placed in the inner side of the extension frame 6, at this time, the photovoltaic support 8 extrudes the inclined surface of the two side inclined blocks 21, so that the inclined blocks 21 are forced to move away from each other, the inclined blocks 21 drive the movable rod 19 to move in the inner side of the extension frame 6, the movement of the movable rod 19 plays a guiding and limiting role on the inclined blocks 21, the inclined blocks 21 extrude the second spring 20 in the moving process, the position of the photovoltaic support 8 is adjusted through forward and backward adjustment, so that one end of the photovoltaic support 8 contacts the back surface of the rubber block 18, then the button 12 is pulled outward, so that the button 12 drives the plug rod 11 to move outward, then the plug rod 11 is separated from the insertion hole 16, the locking of the movable rod 10 is contacted, then the movable rod 10 is pushed to slide in the first sliding groove 14, the eccentric distance of the movable rod 10 in the crank 3 is adjusted, so that the activity distance of the impact block 5 is adjusted, which can meet the fatigue resistance test effect of the photovoltaic support 8 after being impacted by different lengths, the motor 2 is started, the output shaft of the motor 2 drives the crank 3 to rotate, the crank 3 drives the connecting rod 4 and the impact block to do linear reciprocating motion, when the impact block slides in the inner side of the chassis 1, the pulley 7 slides in the limiting groove 17 opened on the two sides of the impact block, the friction force of the impact block in the inner side of the chassis 1 is reduced, and the stability of the impact block in the moving process in the inner side of the chassis 1 is improved, the impact block reciprocating hammering the photovoltaic support 8 is matched, so that the fatigue resistance test effect of the photovoltaic support 8 is realized.

[0029] Finally, it should be pointed out that: the above only preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A fatigue resistance testing device for photovoltaic racks, comprising a chassis (1), characterized in that: The outer side of the chassis (1) is fixedly provided with a motor (2), the output shaft of the motor (2) is fixedly connected with a rotating rod (9), the end surface of the rotating rod (9) is fixedly connected with a crank (3), the side away from the rotating rod (9) of the crank (3) is provided with a first sliding groove (14), the groove wall of the first sliding groove (14) is provided with a insertion hole (16), the groove wall of the first sliding groove (14) is in contact with and slidably connected with a moving rod (10), the end surface of the moving rod (10) is movably penetrated and connected with an insertion rod (11), the groove wall of the sliding groove is provided with an insertion hole (16), one end of the insertion rod (11) is fixedly connected with a button (12), the other end of the insertion rod (11) is inserted with the groove wall of the insertion slot, the inner side of the chassis (1) is in contact with and slidably connected with a striking block (5), a connecting rod (4) is arranged between the striking block (5) and the moving rod (10), one end of the connecting rod (4) is rotatably connected with the surface of the moving rod (10), the other end of the connecting rod (4) is rotatably connected with the inner side of the striking block (5), and the inner side of the chassis (1) is placed with a photovoltaic support (8).

2. The fatigue resistance testing device for a photovoltaic mount according to claim 1, wherein: The inner side of the chassis (1) is provided with a positioning assembly, the positioning assembly comprises a movable rod (19), the side of the chassis (1) is fixedly connected with an extension frame (6), one end of the movable rod (19) is movably penetrated through the inner side of the extension frame (6) and extends outward, the surface of the movable rod (19) is sleeved with a second spring (20), the other end of the movable rod (19) is fixedly connected with an inclined block (21), the bottom of the inclined block (21) is in contact with the inner wall of the extension frame (6), and the two sides of the photovoltaic support (8) are respectively in contact with the side adjacent to the inclined block (21).

3. The fatigue resistance testing device for photovoltaic racks of claim 1, wherein: The inner walls of the two sides of the chassis (1) are both provided with a sliding assembly, the sliding assembly comprises a pulley (7), the inner walls of the two sides of the chassis (1) are both provided with a strip-shaped groove, the pulleys (7) are respectively fixedly connected with the groove walls on the two sides of the strip-shaped groove, the number of the pulleys (7) is several and they are symmetrically arranged at equal intervals, the two sides of the striking block (5) are both provided with a limiting groove (17), and the pulleys (7) are in contact with and slidably connected with the groove walls of the limiting grooves (17).

4. The fatigue resistance testing device for photovoltaic racks of claim 1, wherein: The inner side of the moving rod (10) is provided with a second sliding groove, the surface of the insertion rod (11) is fixedly sleeved with a limiting ring (15), and the edge of the limiting ring (15) is in contact with and slidably connected with the groove wall of the second sliding groove.

5. The fatigue resistance testing device for photovoltaic racks of claim 1, wherein: The surface of the insertion rod (11) is sleeved with a first spring (13), one end of the first spring (13) is fixedly connected with the groove wall of the limiting groove (17), and the other end of the first spring (13) is fixedly connected with the end surface of the limiting ring (15).

6. The fatigue resistance testing device for photovoltaic racks of claim 1, wherein: The number of the insertion holes (16) is three, and the three insertion holes (16) are symmetrically arranged at equal intervals.

7. The fatigue resistance testing device of a photovoltaic mount according to claim 2, wherein: The inner wall of the extension frame (6) is fixedly connected with a rubber block (18), one side of the photovoltaic support (8) is in contact with the side surface of the rubber block (18), and the other side of the photovoltaic support (8) is in contact with the front surface of the striking block (5).

8. The fatigue resistance testing device of a photovoltaic mount according to claim 2, wherein: The movable rod (19), the second spring (20) and the inclined block (21) form a group, and there are two groups in total, and the two groups are symmetrically arranged left and right.

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