A power assembly suitable for a solar device and a solar device

Abstract

The utility model relates to the field of solar energy, concretely relates to a power assembly suitable for solar energy device and solar energy device. First aspect, propose a kind of power assembly suitable for solar energy device, including central shaft, transmission nut, transmission sleeve, screw nut and lead screw. Central shaft inside is equipped with the hollow structure for setting screw and screw nut. Transmission nut is sleeved in central shaft, transmission sleeve is sleeved in transmission nut, and spiral transmission pair is arranged between transmission sleeve and transmission nut, screw nut is transmission cooperation with lead screw, and screw nut is connected with transmission nut. Screw nut includes first section, second section and third section in turn along its central axis, the inner periphery of first section is equipped with the thread matched with lead screw, the inner periphery of third section is also equipped with the thread matched with lead screw, and the inner periphery of second section is not equipped with thread. Second aspect, according to the power assembly described above proposes a kind of solar energy device.

Description

Technical Field

[0001] This utility model relates to the field of solar energy, and in particular to a powertrain and a solar energy device suitable for solar energy devices. Background Technology

[0002] A utility model patent with prior publication number CN221081234U discloses a transmission center shaft assembly. The assembly uses a lead screw to drive a lead screw nut to move linearly along the center shaft. When the lead screw nut moves linearly along the center shaft, it drives a transmission nut to move synchronously. The transmission nut causes the transmission sleeve to rotate relative to the center shaft. When this assembly is applied to a solar energy device, if the solar energy device is driving a solar collector with a large load or is subjected to natural disasters such as wind, the force will be transmitted to the lead screw and lead screw nut. In severe cases, the threads of the lead screw or lead screw nut may wear out and become unable to re-fit, causing the solar energy device to malfunction.

[0003] Therefore, how to design a high-strength powertrain for solar tracking devices is a technical problem that urgently needs to be solved. Utility Model Content

[0004] This utility model first proposes a power assembly suitable for solar energy devices to solve the above-mentioned problems, and secondly proposes a solar energy device.

[0005] As a first aspect of this utility model, a powertrain suitable for solar energy devices is proposed, comprising,

[0006] A central shaft, the central shaft having a hollow structure inside for setting the lead screw and the lead screw nut;

[0007] A transmission nut, which is sleeved on the central shaft;

[0008] A transmission sleeve is sleeved on the transmission nut, and a helical transmission pair is provided between the transmission sleeve and the transmission nut;

[0009] A lead screw nut and a lead screw, wherein the lead screw nut is engaged with the lead screw in a transmission configuration, and the lead screw nut is connected to a transmission nut;

[0010] The lead screw nut includes a first section, a second section, and a third section distributed sequentially along its central axis. The lead screw nut is used to have a through hole that mates with the lead screw, which passes through the first section, the second section, and the third section. The inner circumferential surface of the first section is provided with a thread that mates with the lead screw. The inner circumferential surface of the third section is also provided with a thread that mates with the lead screw. The inner circumferential surface of the second section is not provided with a thread.

[0011] When the lead screw rotates, it drives the lead screw nut and the transmission nut to move linearly along the central axis. Under the action of the helical transmission pair, the transmission sleeve rotates around the central axis of the central shaft.

[0012] Furthermore, the lead screw nut is provided with a first connecting part, and the power assembly also includes a paddle connected to the transmission nut. The paddle is also provided with a second connecting part, and the lead screw nut is connected to the paddle through the cooperation of the first connecting part and the second connecting part.

[0013] In some embodiments, the first connecting portion is a groove, and the second connecting portion is a protrusion;

[0014] Alternatively, the first connecting part may be a threaded hole, and the second connecting part may be a bolt;

[0015] Alternatively, the second connecting part may be a threaded hole and the first connecting part may be a bolt;

[0016] Alternatively, the first connecting part and the second connecting part can be connected by welding.

[0017] Preferably, the first connecting portion is disposed in the second segment.

[0018] Preferably, the first segment and the third segment are made of the same material, and the first segment and the second segment are made of different materials.

[0019] Preferably, the material of the first segment is steel, copper, or a polymer material.

[0020] Preferably, the diameter of the first segment of the outer circumference circle is smaller than the diameter of the second segment of the outer circumference circle, and the diameter of the third segment of the outer circumference circle is smaller than the diameter of the second segment of the outer circumference circle.

[0021] In some embodiments, the diameter of the first inner circumferential circle is smaller than the diameter of the second inner circumferential circle, and the diameter of the third inner circumferential circle is smaller than the diameter of the second inner circumferential circle.

[0022] As a second aspect of this utility model, a solar energy device is proposed, including the aforementioned power assembly.

[0023] The beneficial effects of this utility model are as follows:

[0024] 1. Because the lead screw nut needs to connect to the power source to transmit power to the transmission nut, the length of the lead screw nut needs to be increased to ensure the stability of the connection between the lead screw nut and the transmission nut. However, if the entire inner circumference of the lead screw nut is threaded, there may be a problem of jamming between the lead screw nut and the lead screw. Therefore, the lead screw nut is divided into three sections, with the thread only in the first and third sections. This avoids the problem of traditional fully threaded lead screw nuts easily jamming with the lead screw due to thermal expansion or manufacturing errors in long-stroke applications, effectively releasing axial stress and preventing tension jamming. The unthreaded second section acts as a stress buffer, reducing stress concentration in the threaded section and extending the service life of the lead screw assembly.

[0025] 2. The first connecting part is set on the second section of the lead screw nut. Since the second section is not threaded, it only needs to not affect the rotation of the lead screw. Therefore, a large adjustment space is left for the first connecting part, which can adjust the mating area between the first connecting part and external components (such as the lever) according to the actual situation, thereby strengthening the powertrain.

[0026] 3. The material of the second section in the middle of the lead screw nut differs from that of the first and third sections. The part of the lead screw nut that mates with the lead screw drive is made of copper or a polymer material that facilitates transmission (self-lubrication), thus improving transmission efficiency. Furthermore, the second section can be made of a higher-strength material to enhance the connection strength between the first connecting part of the lead screw nut and the drive nut.

[0027] 4. The outer diameters of the first and third sections are smaller than that of the second section, resulting in a constricted end structure for the lead screw nut. This constricted structure fits snugly against the hollow structure of the central shaft, improving assembly accuracy and speed while reducing installation errors. Furthermore, it reduces the frictional area between the outer surface of the lead screw nut and the hollow structure during movement, thereby lowering frictional resistance and further improving motion efficiency. Attached Figure Description

[0028] Figure 1 This is an exploded view of the powertrain in a specific implementation.

[0029] Figure 2 for Figure 1 A schematic diagram of the center axis of the lead screw nut.

[0030] Figure 3 for Figure 2 A schematic diagram from one perspective.

[0031] Figure 4 for Figure 3 A cross-sectional schematic diagram of AA.

[0032] Figure 5This is a schematic diagram of the solar energy device in a specific implementation.

[0033] in:

[0034] 1. Powertrain; 11. Central shaft; 12. Transmission nut; 13. Transmission sleeve; 14. Lead screw nut; 141. First section; 142. Second section; 143. Third section; 144. First connecting part; 15. Lead screw; 16. Paddle shifter;

[0035] 2. Photovoltaic panels; 3. Supporting columns. Detailed Implementation

[0036] The present invention will be further described in detail below with reference to the accompanying drawings.

[0037] like Figures 1 to 4 As shown, as a first aspect of this specific embodiment, a power assembly 1 suitable for a solar energy device is proposed, including a central shaft 11, a transmission nut 12, a transmission sleeve 13, a lead screw nut 14, and a lead screw 15. The central shaft 11 has a hollow structure inside for mounting the lead screw 15 and the lead screw nut 14. The transmission nut 12 is sleeved on the central shaft 11, the transmission sleeve 13 is sleeved on the transmission nut 12, a helical transmission pair is provided between the transmission sleeve 13 and the transmission nut 12, the lead screw nut 14 is in transmission engagement with the lead screw 15, and the lead screw nut 14 is connected to the transmission nut 12.

[0038] like Figure 2 and Figure 4 As shown, the lead screw nut 14 includes a first section 141, a second section 142, and a third section 143 distributed sequentially along its central axis 11. The lead screw nut 14 has a through hole for cooperating with the lead screw 15, through which the first section 141, the second section 142, and the third section 143 pass. The inner circumferential surface of the first section 141 is provided with a thread that mates with the lead screw 15. The inner circumferential surface of the third section 143 is also provided with a thread that mates with the lead screw 15. The inner circumferential surface of the second section 142 is not provided with a thread.

[0039] like Figure 1 As shown, the motion state of the power assembly 1 is as follows: when the lead screw 15 rotates, the lead screw 15 drives the lead screw nut 14 to move along the central axis 11 line of the central axis 11. The transmission nut 12 moves linearly along the central axis 11 synchronously with the lead screw nut 14. Under the action of the screw transmission pair, the transmission sleeve 13 rotates around the central axis 11 line of the central axis 11. Similarly, the transmission sleeve 13 and the transmission nut 12 rotate relative to each other around the central axis 11 line of the central axis 11.

[0040] A detailed description of the technical features of the central shaft 11, the transmission nut 12, and the transmission sleeve 13 has been described in the utility model patent with publication number CN221081234U, and will not be repeated here.

[0041] Since the lead screw nut 14 needs to connect to the power source to transmit power to the transmission nut 12, its length needs to be increased to ensure the stability of the connection between the lead screw nut 14 and the transmission nut 12. However, if the entire inner circumferential surface of the lead screw nut 14 is threaded, there is a possibility of jamming between the lead screw nut 14 and the lead screw 15. Therefore, the lead screw nut 14 is divided into three sections: a first section 141, a second section 142, and a third section 143. The threads are only present in the first and third sections 141 and 143. This avoids the common problem of traditional fully threaded lead screw nuts 14 jamming with the lead screw 15 due to thermal expansion or manufacturing errors in long-stroke applications, effectively releasing axial stress and preventing tension jamming. The unthreaded second section 142 acts as a stress buffer, reducing stress concentration in the threaded section and extending the service life of the lead screw 15 assembly.

[0042] Furthermore, such as Figure 1 and Figure 2 As shown, the lead screw nut 14 is provided with a first connecting part 144, and the power assembly 1 also includes a paddle 16 connected to the transmission nut 12. The paddle 16 is also provided with a second connecting part. The lead screw nut 14 is connected to the paddle 16 through the cooperation of the first connecting part 144 and the second connecting part.

[0043] There are various ways to connect the lever 16 and the lead screw nut 14, so they will not be listed one by one. The following are four simple methods: First method: the first connecting part 144 is a groove, and the second connecting part is a protrusion. Second method: the first connecting part 144 is a threaded hole, and the second connecting part is a bolt. Third method: the second connecting part is a threaded hole, and the first connecting part 144 is a bolt. Fourth method: the first connecting part 144 and the second connecting part are connected by welding.

[0044] The first connecting part 144 is provided on the second section 142 of the lead screw nut 14. Since the second section 142 is not threaded, it only needs to not affect the rotation of the lead screw 15. Therefore, a large adjustment space is left for the first connecting part 144, and the mating area between the first connecting part 144 and external components (such as the lever 16) can be adjusted according to the actual situation to strengthen the power assembly 1.

[0045] As a preferred embodiment, such as Figure 2As shown, the first connecting part 144 is disposed on the second section 142 of the lead screw nut 14. Since the second section 142 is not threaded, it only needs to not affect the rotation of the lead screw 15. Therefore, a large adjustment space is provided for the first connecting part 144, which can adjust the mating area between the first connecting part 144 and external components (such as the lever 16) according to the actual situation, thereby strengthening the power assembly 1.

[0046] In some embodiments, to improve the connection strength between the lead screw nut 14 and the transmission nut 12, such as Figure 4 As shown, there is at least one first connecting part 144, and the plurality of first connecting parts 144 are arranged symmetrically about the axis of the lead screw nut 14.

[0047] Preferably, the first segment 141 and the third segment 143 are defined as transmission parts. Since the transmission parts need to cooperate with the lead screw nut 14, in order to improve transmission efficiency, the transmission parts are made of the same material, and can be supported by materials with good lubrication and high strength according to actual needs. Furthermore, since the second segment 142 needs to be connected to the transmission nut 12 through the first connecting part 144, the material of the second segment 142 must not only be different from that of the first segment 141 (third segment 143), but its strength should also be greater than that of the first segment 141 (third segment 143) under normal circumstances. Of course, in some special cases, the strength of the material of the second segment 142 is less than that of the first segment 141 (third segment 143).

[0048] Regarding the materials of the first segment 141 and the third segment 143, they can be steel, copper, or polymer materials. The material of the second segment 142 in the middle of the lead screw nut 14 differs from that of the first segment 141 and the third segment 143. The part of the lead screw nut 14 that engages with the lead screw 15 is made of copper or a polymer material that facilitates transmission (self-lubrication), thereby improving transmission efficiency. Furthermore, the second segment 142 can be made of a high-strength material to enhance the connection strength between the first connecting part 144 and the transmission nut 12 in the lead screw nut.

[0049] Preferably, the diameter of the outer circumference of the first segment 141 is smaller than the diameter of the outer circumference of the second segment 142, and the diameter of the outer circumference of the third segment 143 is smaller than the diameter of the outer circumference of the second segment 142. Since the second segment 142 generally requires greater strength, its thickness is greater than that of the first segment 141 and also greater than that of the third segment 143. This reduces the overall weight and lowers costs while still meeting basic functional requirements.

[0050] The outer diameters of the first segment 141 and the third segment 143 are smaller than the diameter of the second segment 142, resulting in a constricted end structure for the lead screw nut 14. This constricted structure fits into the hollow structure of the central shaft 11, improving assembly accuracy and speed while reducing installation errors. Furthermore, it reduces the frictional area between the outer surface of the lead screw nut 14 and the hollow structure during movement, thereby reducing frictional resistance and further improving motion efficiency.

[0051] In some embodiments, the diameter of the inner circumferential circle of the first segment 141 is smaller than the diameter of the inner circumferential circle of the second segment 142, and the diameter of the inner circumferential circle of the third segment 143 is smaller than the diameter of the inner circumferential circle of the second segment 142.

[0052] As a second aspect of this specific embodiment, such as Figure 3 As shown, a solar energy device is proposed, including the aforementioned powertrain 1, as well as a solar collector and a support column 3. Regarding the solar collector: it can be either a photovoltaic panel 2 for power generation or a thermal collector for heat storage.

[0053] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0054] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0055] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "provided with" and "connected," etc., should be interpreted broadly. For example, "connected" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0056] The above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the present utility model patent should be included in the scope of the present utility model.

Claims

1. A powertrain suitable for solar energy devices, characterized in that: include, A central shaft, the central shaft having a hollow structure inside; A transmission nut, which is sleeved on the central shaft; A transmission sleeve is sleeved on the transmission nut, and a helical transmission pair is provided between the transmission sleeve and the transmission nut; A lead screw nut and a lead screw, wherein the lead screw nut and the lead screw are disposed in the hollow structure, the lead screw nut is driven to cooperate with the lead screw, and the lead screw nut is provided with a first connecting part for connecting with the drive nut; The lead screw nut includes a first section, a second section, and a third section distributed sequentially along its central axis. The inner circumferential surface of the first section is provided with a thread that mates with the lead screw. The inner circumferential surface of the third section is also provided with a thread that mates with the lead screw. The inner circumferential surface of the second section is not provided with a thread. When the lead screw rotates, it drives the lead screw nut and the transmission nut to move linearly along the central axis. Under the action of the helical transmission pair, the transmission sleeve rotates around the central axis of the central shaft.

2. The powertrain as described in claim 1, characterized in that: There is at least one first connecting part, and multiple first connecting parts are arranged symmetrically about the axis of the lead screw nut.

3. The powertrain as described in claim 1, characterized in that: The powertrain also includes a paddle connected to the transmission nut. The paddle is further provided with a second connecting part. The lead screw nut is connected to the paddle through the cooperation of the first connecting part and the second connecting part.

4. The powertrain as described in claim 3, characterized in that: The first connecting part is a groove, and the second connecting part is a protrusion; Alternatively, the first connecting part may be a threaded hole, and the second connecting part may be a bolt; Alternatively, the second connecting part may be a threaded hole and the first connecting part may be a bolt; Alternatively, the first connecting part and the second connecting part can be connected by welding.

5. The powertrain as described in claim 1, characterized in that: The first connecting part is disposed in the second segment.

6. The powertrain as described in claim 1, characterized in that: The first segment and the third segment are made of the same material, while the first segment and the second segment are made of different materials.

7. The powertrain as described in claim 6, characterized in that: The material of the first segment is steel, copper, or polymer.

8. The powertrain as described in claim 1, characterized in that: The diameter of the first segment of the outer circumference circle is smaller than the diameter of the second segment of the outer circumference circle, and the diameter of the third segment of the outer circumference circle is smaller than the diameter of the second segment of the outer circumference circle.

9. The powertrain as described in claim 1, characterized in that: The diameter of the first inner circumferential circle is smaller than the diameter of the second inner circumferential circle, and the diameter of the third inner circumferential circle is smaller than the diameter of the second inner circumferential circle.

10. A solar energy device, characterized in that: The powertrain includes any one of claims 1 to 9.

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