A centrifugal self-locking damping mechanism and photovoltaic device

Abstract

The present invention provides a centrifugal self-locking damping mechanism and a photovoltaic device, which relate to the photovoltaic field and include a locking body and a cylindrical rotating body. A cylindrical slot matching the rotating body is provided in the middle of the locking body, one end of the rotating body is inserted into the cylindrical slot and is rotatably connected to the cylindrical slot, a locking pin portion that can slide outward is buried in the rotating body, at least one group of card slots matching the locking pin portion is provided in the upper part of the cylindrical slot, the front end portion of the locking pin portion slides out and is inserted into the card slot to brake the rotating body, and when there is a sudden external force applied to the photovoltaic panel, the photovoltaic panel pulls the rotating body to rotate through the steel wire rope, and the locking pin portion buried in the rotating body slides outward under the action of centrifugal force until the front end portion of the locking pin portion slides out and is inserted into the card slot, thereby braking the rotating body to achieve a damping effect, which not only has a wide range of applications but also has low subsequent maintenance costs.

Description

Technical Field

[0001] The invention relates to the photovoltaic field, and in particular to a centrifugal self-locking damping mechanism and a photovoltaic device. Background Art

[0002] Photovoltaic power generation is a technology that uses the photovoltaic effect of semiconductor interfaces to directly convert light energy into electrical energy. Photovoltaic tracking brackets are an important component of photovoltaic power generation. Currently, photovoltaic tracking brackets are used in wild environments such as Gobi, desert, tidal flats, grasslands, and wastelands far away from urban populations. The climate and environment of the sites where they are located are often complex and changeable, and some areas may also experience sudden extreme weather, such as strong winds, heavy snow, floods, earthquakes, etc.

[0003] The photovoltaic tracking bracket must guarantee a service life of 25 years in complex and changeable outdoor environments, so the stability of its structure must be considered and guaranteed. At present, most photovoltaic tracking brackets on the market use dampers to ensure the stability of the tracking bracket, so as to avoid resonance of the tracking bracket under the action of external excitation loads, which may cause structural damage.

[0004] The existing tracking bracket uses a hydraulic damper to prevent bracket resonance damage and improve bracket stability. However, the inventors found that the current damper has the following main disadvantages and shortcomings:

[0005] a. The service life of the damper is difficult to match the 25-year service life of the tracking bracket, mainly due to oil leakage and rust on the damper welds. It is difficult to achieve 25 years of maintenance-free service. After damage, it needs to be replaced, and the subsequent operation and maintenance costs are high;

[0006] b. The load that the damper can withstand is a fixed value and is not adjustable. It is impossible to use one damper to meet most usage requirements. Each project needs to be re-selected and calculated, which not only has a large workload, but also makes it difficult to effectively cope with changing environments. Summary of the invention

[0007] The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art and provide a centrifugal self-locking damping mechanism and a photovoltaic device, which not only have a wide range of applications but also have low subsequent maintenance costs.

[0008] The present invention is realized through the following technical scheme: a centrifugal self-locking damping mechanism, including a locking body and a cylindrical rotating body, a cylindrical slot matched with the rotating body is opened in the middle of the locking body, one end of the rotating body is inserted into the cylindrical slot and is rotatably connected with the cylindrical slot, a locking pin part that can slide outward is buried in the rotating body, and at least one group of card slots matched with the locking pin part are opened in the upper part of the cylindrical slot, and the front end part of the locking pin part slides out and is inserted into the card slot to brake the rotating body.

[0009] According to the above technical solution, preferably, it also includes a winding spring, which is wound around the rotating body, and two ends of the winding spring are respectively connected to the rotating body and the locking body.

[0010] According to the above technical solution, preferably, the rotating body is rotatably connected to the cylindrical slot via a bearing.

[0011] According to the above technical solution, preferably, a stabilizing mechanism is also included, which includes a shell fixed on the frame, a rotation groove is opened in the middle of the shell, the other end of the rotating body is inserted into the rotation groove, and is rotatably connected to the rotation groove through a bearing.

[0012] According to the above technical solution, preferably, a clockwork spring is provided in the rotating groove.

[0013] The present invention also discloses a centrifugal self-locking photovoltaic device, comprising two groups of the above-mentioned centrifugal self-locking damping mechanisms, the centrifugal self-locking damping mechanisms are fixed on the photovoltaic pile through a horizontal bracket, and also include a transverse support arm, a steel wire rope and a buffer mechanism, the transverse support arm is fixedly connected to the photovoltaic torque tube, and rollers are rotatably connected at both ends of the transverse support arm. The buffer mechanism is arranged on the horizontal bracket, and the two ends of the steel wire rope are connected to the buffer mechanism and the rotating body.

[0014] According to the above technical solution, preferably, the buffer mechanism includes a pull rod and a spring, the lower end of the pull rod passes through the horizontal bracket, and the spring is sleeved on the pull rod, and the end of the wire rope is fixed to the upper end of the pull rod.

[0015] The beneficial effects of the present invention are:

[0016] When a sudden external force is applied to the photovoltaic panel, the photovoltaic panel pulls the rotating body to rotate through the wire rope, and the locking pin buried in the rotating body slides outward under the action of centrifugal force until the front end of the locking pin slides out and inserts into the slot, thereby braking the rotating body to achieve a damping effect. It not only has a wide range of applications, but also has low subsequent maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It shows an isometric structural schematic diagram of embodiment 1 according to the present invention;

[0018] Figure 2 A schematic diagram of a top view of the structure according to Embodiment 1 of the present invention is shown;

[0019] Figure 3 Shows Figure 2 Schematic diagram of the cross-sectional structure in the AA direction;

[0020] Figure 4 shows an isometric structural schematic diagram of Embodiment 2 according to the present invention;

[0021] In the figure: 1. locking body; 2. rotating body; 3. stabilizing mechanism; 4. shell; 5. bearing; 6. locking pin; 7. slot; 8. photovoltaic torque tube; 9. photovoltaic pile; 10. lateral support arm; 11. steel wire rope; 12. buffer mechanism; 13. roller; 14. pull rod; 15. spring. DETAILED DESCRIPTION

[0022] The technical solution of the invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the invention, not all of them. Based on the embodiments of the invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the invention.

[0023] Example 1

[0024] As shown in the figure, the present invention provides a centrifugal self-locking damping mechanism, including a locking body 1, a cylindrical rotating body 2 and a stabilizing mechanism 3. A cylindrical slot matching the rotating body 2 is opened in the middle of the locking body 1, one end of the rotating body 2 is inserted into the cylindrical slot and is rotatably connected to the cylindrical slot, and the stabilizing mechanism 3 includes a shell 4 fixed on the frame, a rotating groove is opened in the middle of the shell 4, the other end of the rotating body 2 is inserted into the rotating groove, and is rotatably connected to the rotating groove through a bearing 5, a locking pin portion 6 that can slide outward is buried in the rotating body 2, and at least one group of card slots 7 matching the locking pin portion 6 are opened in the upper part of the cylindrical slot, and the front end portion of the locking pin portion 6 slides out and is inserted into the card slot 7 to brake the rotating body 2.

[0025] According to the above embodiment, preferably, it also includes a spring coil, which is wound around the rotating body 2, and the two ends of the spring coil are respectively connected to the rotating body 2 and the locking body 1, and the spring coil is used to pull the rotating body 2.

[0026] Furthermore, the rotating body 2 is rotatably connected to the cylindrical slot via the bearing 5, so that the rotating body 2 can rotate smoothly.

[0027] Furthermore, a winding spring for pulling the rotating body 2 is also provided in the rotating groove.

[0028] Example 2

[0029] The present invention also discloses a centrifugal self-locking photovoltaic device, comprising two groups of the above-mentioned centrifugal self-locking damping mechanisms, the centrifugal self-locking damping mechanisms are fixed on the photovoltaic pile 9 through a horizontal bracket, and also include a transverse support arm 10, a steel wire rope 11 and a buffer mechanism 12, the transverse support arm 10 is fixedly connected to the photovoltaic torque tube 8, and the two ends of the transverse support arm 10 are rotatably connected with rollers 13, the buffer mechanism 12 is arranged on the horizontal bracket, and the two ends of the steel wire rope 11 are connected to the buffer mechanism 12 and the rotating body 2.

[0030] According to the above embodiment, preferably, the buffer mechanism 12 includes a pull rod 14 and a spring 15, the lower end of the pull rod 14 passes through the horizontal bracket, and the spring 15 is sleeved on the pull rod 14, and the end of the wire rope 11 is fixed to the upper end of the pull rod 14. Under the action of the spring 15, the wire rope is used to maintain a tensioned state, and the pull rod 14 can float appropriately, which has a certain protective effect on the centrifugal self-locking damping mechanism.

[0031] Installation process:

[0032] The staff first installs the horizontal bracket on the photovoltaic pile 9, the transverse support arm 10 on the photovoltaic torque tube 8, and then installs the two sets of the above-mentioned centrifugal self-locking damping mechanisms on the horizontal bracket; at this time, the wire rope 11 passes around the roller 13 on the transverse support arm 10, and its two ends are respectively connected to the buffer mechanism 12 and the rotating body 2.

[0033] Working process:

[0034] During braking: when a sudden external force is applied to the photovoltaic panel, the photovoltaic panel drives the lateral support arm to swing, and the lateral support arm pulls the rotating body to rotate rapidly through the steel wire rope 11, and the locking pin part 6 embedded in the rotating body slides outward under the action of centrifugal force until the front end of the locking pin part 6 slides out and inserts into the card slot 7, thereby braking the rotating body 2;

[0035] When the sudden external force disappears, the locking pin portion 6 returns to the rotating body under the action of its own weight, thereby releasing the brake and playing an effective damping role.

[0036] The beneficial effects of the present invention are:

[0037] When a sudden external force is applied to the photovoltaic panel, the photovoltaic panel pulls the rotating body to rotate through the wire rope 11, and the locking pin part 6 buried in the rotating body slides outward under the action of centrifugal force until the front end part of the locking pin part 6 slides out and inserts into the slot 7, thereby braking the rotating body 2 to achieve a damping effect. It not only has a wide range of applications, but also has low subsequent maintenance costs.

[0038] In the description of the invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the invention 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 limiting the invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0039] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 indirectly connected 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 invention can be understood according to specific circumstances.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the invention rather than to limit it. Although the invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solution to deviate from the scope of the technical solution of the embodiments of the invention.

Claims

1. A centrifugal self-locking photovoltaic device, characterized in that: The utility model comprises two groups of centrifugal self-locking damping mechanisms, which are fixed on the photovoltaic pile through a horizontal support, and also comprise a transverse support arm, a steel wire rope and a buffer mechanism, wherein the transverse support arm is fixedly connected to the photovoltaic torque tube, and rollers are rotatably connected at both ends of the transverse support arm, and the buffer mechanism is arranged on the horizontal support, and the centrifugal self-locking damping mechanism comprises a locking body and a cylindrical rotating body, and the two ends of the steel wire rope are connected with the buffer mechanism and the rotating body, and a cylindrical slot matching with the rotating body is provided in the middle of the locking body, and one end of the rotating body is inserted into the cylindrical slot and rotatably connected with the cylindrical slot, and a locking pin part which can slide outward is buried in the rotating body, and at least one group of card slots matching with the locking pin part is provided in the upper part of the cylindrical slot, and the front end part of the locking pin part slides out and is inserted into the card slot to brake the rotating body, and the centrifugal self-locking damping mechanism also comprises a spring coil, which is wound around the rotating body, and the two ends of the spring coil are respectively connected with the rotating body and the locking body.

2. A centrifugal self-locking photovoltaic device according to claim 1, characterized in that: The rotating body is rotatably connected to the cylindrical slot via a bearing.

3. A centrifugal self-locking photovoltaic device according to claim 1, characterized in that: The centrifugal self-locking damping mechanism also includes a stabilizing mechanism, which includes a shell fixed on the frame, a rotation groove is opened in the middle of the shell, and the other end of the rotating body is inserted into the rotation groove and is rotatably connected to the rotation groove through a bearing.

4. A centrifugal self-locking photovoltaic device according to claim 3, characterized in that: A winding spring is arranged in the rotating groove.

5. A centrifugal self-locking photovoltaic device according to claim 1, characterized in that: The buffer mechanism comprises a pull rod and a spring, the lower end of the pull rod passes through the horizontal bracket, and the spring is sleeved on the pull rod, and the end of the steel wire rope is fixed to the upper end of the pull rod.

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