Spiral sleeve, spiral transmission assembly and solar device

Abstract

The utility model relates to the field of screw drive, in particular to a screw sleeve, a screw drive assembly and a solar device. The spiral sleeve comprises a first sleeve body, a second sleeve body and an elastic piece, the first sleeve body and the second sleeve body are coaxially arranged, threads with the consistent thread pitch are arranged on the circumferential face of the first sleeve body and the circumferential face of the second sleeve body, and the elastic piece is arranged between the first sleeve body and the second sleeve body. The spiral sleeve further comprises at least one limiting piece, the limiting piece is provided with a connecting position used for being connected with an external driving component, the first sleeve is provided with a first limiting part matched with the limiting piece, and the first limiting part does not penetrate through the first sleeve. The second sleeve is provided with a second limiting part matched with the limiting piece, and the second limiting part does not penetrate through the second sleeve; the limiting piece can abut against the first limiting part or the second limiting part. The spiral transmission assembly is provided according to the spiral sleeve. Finally, the solar device is provided according to the spiral transmission assembly. The spiral spline has the beneficial effects that the integration is improved while the transmission gap of the spiral spline is reduced.

Description

Technical Field

[0001] The utility model relates to the field of spiral transmission, in particular to a spiral sleeve, a spiral transmission component and a solar energy device. Background Art

[0002] The transmission matching positions of the spiral transmission component are the inner spiral and the outer spiral. The processing of the outer spiral is usually easier, but for the inner spiral, especially the inner spiral with a longer size, it is usually difficult to achieve a high processing accuracy because it needs to be processed on the inner circumference with limited space, so a large gap will be generated between the inner spiral and the outer spiral. In addition, after the spiral transmission component has been running for a period of time, the inner spiral and the outer spiral will have a certain degree of wear, and this wear will also cause a gap. If there is a gap in the spiral transmission component, it will affect the working state of its internal or external components during operation, causing vibration or shaking, and posing a safety hazard.

[0003] Therefore, how to design a structure that can reduce the transmission clearance of the spiral transmission assembly has become a technical problem that needs to be solved urgently. Utility Model Content

[0004] The utility model provides a spiral sleeve to solve the problem of transmission gap of a spiral transmission component. According to the spiral sleeve, the utility model further provides a spiral transmission component, and provides a solar device by the spiral transmission component.

[0005] As a first aspect of the utility model, a spiral sleeve is provided, comprising

[0006] A first sleeve, a second sleeve and an elastic member, wherein the first sleeve and the second sleeve are coaxially arranged, the circumferences of the first sleeve and the second sleeve are both provided with threads with the same pitch, and the elastic member is arranged between the first sleeve and the second sleeve;

[0007] At least one stopper, the stopper being provided with a connection position for connecting with an external active component, the stopper comprising a main body, a first matching portion and a second matching portion, the first matching portion extending from one end of the main body in a direction away from the main body, and the second matching portion extending from the other end of the main body in a direction away from the main body;

[0008] The first sleeve is provided with a first limiting portion that cooperates with the first matching portion, and the first limiting portion does not pass through the first sleeve; the second sleeve is provided with a second limiting portion that cooperates with the second matching portion, and the second limiting portion does not pass through the second sleeve; the first matching portion is used to abut against the first limiting portion, and the second matching portion is used to abut against the second limiting portion.

[0009] Preferably, the threads are provided on the outer circumferences of the first sleeve and the second sleeve, and the inner circumferences of the first sleeve and the second sleeve are provided with spur splines;

[0010] Alternatively, the thread is provided on the inner circumference of the first sleeve and the second sleeve, and the outer circumference of the first sleeve and the second sleeve is provided with a straight spline.

[0011] Preferably, the thread is a helical spline, and the helical spline and / or the spur spline are involute splines.

[0012] Preferably, the helix angle of the thread is greater than 0 degree and less than 45 degrees.

[0013] Preferably, the elastic member is a wave spring.

[0014] Preferably, the first sleeve and / or the second sleeve is provided with a spring groove for accommodating the wave spring.

[0015] Preferably, the first limiting portion is provided on the inner circumference of the first sleeve, and the second limiting portion is provided on the inner circumference of the second sleeve;

[0016] Alternatively, the first limiting portion is provided on the outer circumference of the first sleeve, and the second limiting portion is provided on the outer circumference of the second sleeve;

[0017] When the limiting member moves toward the target direction, the limiting member abuts against and drives the first sleeve or the second sleeve which is farther from the target direction to move.

[0018] Preferably, the first matching portion is detachably fixedly connected to the first sleeve, and the first matching portion is detachably fixedly connected to the first sleeve.

[0019] As a second aspect of the present invention, a spiral transmission assembly is proposed, comprising the above-mentioned spiral sleeve, and also comprising a spline shaft, a screw rod, a screw nut, a connecting piece and an outer cylinder, wherein the screw rod is threadedly connected to the screw nut, one end of the connecting piece is connected to the screw nut, and the other end is connected to the connecting position, the spiral sleeve is sleeved on the spline shaft, and the outer cylinder is sleeved on the spiral sleeve.

[0020] As a third aspect of the utility model, a solar energy device is proposed, comprising the above-mentioned spiral transmission assembly, and also comprising a light receiving member and a column, wherein the fixed end of the spiral transmission assembly is connected to the column, and the moving end of the spiral transmission assembly is connected to the light receiving member.

[0021] The beneficial effects of the utility model are:

[0022] 1. By applying an elastic member, the spacing between the first sleeve and the second sleeve can be adjusted. In the spiral transmission assembly using the spiral sleeve proposed in this application, the spiral spline in the first sleeve only cooperates with one side of the external keyway, and the spiral spline in the second sleeve cooperates with the other side of the external keyway, which overcomes the problem of transmission gap between components such as the spiral sleeve and the outer cylinder caused by insufficient processing accuracy; reduces the requirements for the processing accuracy of the spiral spline, and improves the movement accuracy and stability of the spiral sleeve and the outer cylinder. When the spiral sleeve moves, it is affected by the elastic force, so that the first sleeve automatically moves away from or close to the second sleeve within a limited range (similar to expansion and contraction), without the intervention of the operator, reducing the maintenance work; at the same time, the elastic member is elastic. When subjected to external impact force, since the spiral splines on the first sleeve and the second sleeve respectively cooperate with different sides of the keyway, the external impact force is absorbed by the elastic member, reducing the direct impact of the external impact force on various parts of the spiral transmission assembly.

[0023] 2. In the embodiment where the spiral sleeve is provided with both a spiral spline and a spur spline, the first sleeve and the second sleeve will rotate relative to each other while moving away from or approaching each other within a limited range under the action of elastic force. Since the spiral sleeve is also provided with a spur spline that cooperates with the spline shaft, the relative rotation of the first sleeve and the second sleeve causes the spur spline in the spiral sleeve to abut against the spline shaft. This abutment will further enhance the tightness of the fit between the spiral spline and the spur spline, thereby further reducing the fit clearance between the spiral sleeve and the spline shaft and enhancing the working stability of the spiral transmission assembly.

[0024] 3. During the movement, the elastic force of the elastic member causes the first sleeve and the second sleeve to move away from or closer to each other. This movement of moving away from or closer to each other causes the sleeve to come into contact with the spiral matching component, thereby reducing the movement gap. The movement direction of moving away from or closer to each other is set as the clearance elimination direction. In the case where the spiral sleeve is the active component and its outer circumference is provided with a thread, the spiral sleeve is matched with an outer cylinder provided with an internal thread, and the outer cylinder is driven to rotate by driving the spiral clearance elimination sleeve to move linearly. Since the clearance elimination direction is divided into the movement direction of the first sleeve and the movement direction of the second sleeve, taking the movement direction of the first sleeve as an example, the above-mentioned clearance elimination method can make the movement direction of the first sleeve contrary to the overall movement direction of the spiral clearance elimination sleeve. Furthermore, under the influence of the friction force on the spiral surface, the movement between the two may cause jamming, stop running, or even damage the equipment. In the spiral anti-backlash sleeve proposed in the present application, the two anti-slip parts located at the ends of the first sleeve and the second sleeve away from the elastic member push the first sleeve or the second sleeve which is far away from the movement direction of the spiral anti-backlash sleeve to move, so that when the spiral anti-backlash sleeve moves along its axis, the anti-backlash direction of the first sleeve and the second sleeve is consistent with its overall movement direction, and the spiral anti-backlash sleeve will not get stuck during movement, resulting in jamming or even destruction of the movement state. The stability of the spiral transmission operation is improved while reducing the spiral fitting clearance.

[0025] 5. In the embodiment where the first limiter is arranged on the inner circumference of the first sleeve and the second limiter is arranged on the inner circumference of the second sleeve, the limiter is also arranged inside the first sleeve and the second sleeve and limits the motion range of the first sleeve and the second sleeve, which can improve the space utilization and integration of the spiral sleeve proposed by the utility model. This design idea not only improves the stability and reliability of its structure, but also makes the entire mechanical system more compact.

[0026] 4. When the solar device is stationary or performing solar tracking and is affected by external factors such as wind, the photovoltaic panel will shake. The shaking of the photovoltaic panel will apply a force to the moving end of the spiral transmission component. The moving end of the spiral transmission component transmits the force to the spiral anti-backlash sleeve, causing the first sleeve or the second sleeve that abuts the moving end to have a tendency to move axially. Since an elastic member is provided in the spiral anti-backlash sleeve, the first sleeve and the second sleeve will move relative to each other due to the elastic force, thereby indirectly reducing the impact of the force brought by external factors such as wind on the transmission component, allowing the spiral transmission component to have the ability to buffer such force. The shock-absorbing and buffering capacity of the spiral anti-backlash sleeve is not limited to its application in solar devices, but can also be used in other structures that are prone to vibration or shaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the axonometric view of the spiral sleeve in this embodiment.

[0028] Figure 2 Schematic diagram of the exploded view of the spiral sleeve in this embodiment.

[0029] Figure 3 It is a schematic front view of the end of the spiral sleeve in this embodiment.

[0030] Figure 4 for Figure 3 Section view at AA.

[0031] Figure 5 Schematic diagram of the axonometric view of the screw transmission assembly in this embodiment.

[0032] Figure 6 Schematic diagram of the exploded view of the screw transmission assembly in this embodiment.

[0033] Figure 7 A schematic diagram of a solar energy device.

[0034] in:

[0035] 1. Spiral sleeve;

[0036] 11. first sleeve; 111. first limiting portion;

[0037] 12. second sleeve; 121. second limiting portion;

[0038] 13. Wave spring;

[0039] 14. Thread;

[0040] 15. Straight spline;

[0041] 16. Position limiting member; 161. Main body; 162. First matching portion; 163. Second matching portion; 164. Connecting position;

[0042] 2. Screw transmission assembly; 21. Outer cylinder; 22. Spline shaft; 23. Screw; 24. Screw nut; 25. Ear;

[0043] 3. Photovoltaic panels; 4. Pillars. DETAILED DESCRIPTION

[0044] The present application is further described in detail below in conjunction with specific drawings.

[0045] As a first aspect of the present embodiment, a spiral sleeve 1 is proposed, comprising a first sleeve 11, a second sleeve 12 and an elastic member, wherein the first sleeve 11 and the second sleeve 12 are coaxially arranged, and the circumferential surfaces of the first sleeve 11 and the second sleeve 12 are both provided with threads 14 with consistent pitches, and the elastic member is arranged between the first sleeve 11 and the second sleeve 12; at least one stopper 16, the stopper 16 is provided with a connection position 164 for connecting to an external active component, the stopper 16 comprises a main body 161, a first matching portion 162 and a second matching portion 163, and the first matching portion 162 is connected from the main body to the second sleeve 12; One end of the main body 161 extends in a direction away from the main body 161, and the second matching portion 163 extends from the other end of the main body 161 in a direction away from the main body 161; the first sleeve 11 is provided with a first limiting portion 111 matched with the first matching portion 162, and the first limiting portion 111 does not pass through the first sleeve 11; the second sleeve 12 is provided with a second limiting portion 121 matched with the second matching portion 163, and the second limiting portion 121 does not pass through the second sleeve 12; the first matching portion 162 is used to abut against the first limiting portion 111, and the second matching portion 163 is used to abut against the second limiting portion 121.

[0046] Regarding the first sleeve 11 and the second sleeve 12: the circumferential surfaces of the first sleeve 11 and the second sleeve 12 are provided with threads 14 with the same pitch, which means that the threads 14 are provided on the inner circumferential surface of the first sleeve 11, and the threads 14 are provided on the inner circumferential surface of the second sleeve 12. In this case, the first sleeve 11 and the second sleeve 12 can be respectively connected to the components (such as screws) with matching threads 14 on the outer circumferential surface; or Figure 1 In the embodiment shown, the outer circumference of the first sleeve 11 is provided with a thread 14, and the outer circumference of the second sleeve 12 is provided with a thread 14. At this time, the first sleeve 11 and the second sleeve 12 can be respectively connected to the components (such as the outer sleeve 21) whose inner circumference is provided with matching threads 14. Moreover, when the spiral sleeve 1 is in a static state without being connected to the external component, there is a certain distance between the first sleeve 11 and the second sleeve 12, and the threads 14 on the circumferences of the two are not continuous, but have a certain misalignment; after the spiral sleeve 1 is connected to the external component, through the spiral transmission cooperation between the spiral sleeve 1 and the external component, the above misalignment will enable the spiral sleeve 1 and the external component to achieve a tight transmission state.

[0047] In some embodiments, the thread 14 is provided on the outer circumference of the first sleeve 11 and the second sleeve 12, and the inner circumference of the first sleeve 11 and the second sleeve 12 is provided with a spur spline 15; or, the thread 14 is provided on the inner circumference of the first sleeve 11 and the second sleeve 12, and the outer circumference of the first sleeve 11 and the second sleeve 12 is provided with a spur spline 15.

[0048] like Figures 1 to 6As shown, in some embodiments, when the outer circumferential surface of the spiral sleeve 1 is provided with a thread 14, the inner circumferential surface of the spiral sleeve 1 is provided with a spur spline 15, and the spur spline 15 can be conveniently and quickly connected or transmitted with an external component. When the spur spline 15 is used for connection, the first sleeve 11 and the second sleeve 12 can move relative to the external connected component along the spur spline 15, and through this relative movement, the thread 14 of the spiral sleeve 1 and the external component are more closely matched. When the spur spline 15 is used for transmission, while having the connection function of the spur spline 15, the first sleeve 11 and the second sleeve 12 can not only move relative to the externally connected parts along the spur spline 15, but the entire spiral sleeve 1 can also move along the spur spline 15. At this time, since the first sleeve 11 and the second sleeve 12 have relative rotational movement, the relative rotation of the first sleeve 11 and the second sleeve 12 allows the spur spline 15 in the spiral sleeve 1 to abut against the spline shaft 22. This abutment will further enhance the tightness of the fit between the thread 14 and the spur spline 15, thereby further reducing the fit clearance between the spiral sleeve 1 and the spline shaft 22, and enhancing the stability of the spiral sleeve 1 when it moves and works along the spur spline 15.

[0049] In such Figure 3 In some embodiments shown, the thread 14 is a helical spline, and the helical spline and / or the spur spline 15 is an involute spline. The involute thread 14 (or helical spline) provides a larger contact area in transmitting torque and motion, and also has the advantages of self-centering, high installation accuracy and high load-bearing capacity.

[0050] In some embodiments, the helix angle of the thread 14 is greater than 0 degrees and less than 45 degrees. At this time, the thread 14 can be understood as a spiral spline. In view of the negative correlation between the helix angle and the lead of the thread 14 when the diameter is fixed, that is, the smaller the helix angle, the larger the lead. When the friction force is fixed, the force required to be applied when the spiral sleeve 1 is driven to rotate with the external component is reduced accordingly. However, if the helix angle of the thread 14 is adjusted to close to 0 degrees, although the required force is reduced, it will cause the length of the spiral sleeve 1 to increase significantly when the relative rotation is at a certain angle, thereby occupying a large space, bringing many inconveniences to practical applications. On the contrary, if the helix angle is adjusted to close to 45 degrees, although the required length of the spiral sleeve 1 is shorter when the relative rotation is at a certain angle, the requirement for surface roughness is significantly improved, and the requirement for applying the force is also increased accordingly. Therefore, after experimental summary, in the embodiment where the helix angle of the thread 14 is 13 degrees, the spiral sleeve 1 proposed in this embodiment can achieve stable transmission without taking up space.

[0051] The elastic member can be composed of elastic components, which can be polymers such as rubber, or metal springs such as torsion springs, tension springs, etc. In some embodiments, the elastic member is a wave spring 13. Compared with other springs, the wave spring 13 has a more compact structure and can provide stronger elastic force in a limited space, which is particularly suitable for occasions where the installation space is limited. In other embodiments, the first sleeve 11 and / or the second sleeve 12 is provided with a spring groove for accommodating the wave spring 13, which prevents the spring from detaching and improves space utilization. Furthermore, in the embodiment of providing a single spring groove, the overall integration can be improved and the processing cost can be reduced.

[0052] There are two situations regarding the positions of the first limiting portion 111 and the second limiting portion 121. In the first situation, the first limiting portion 111 is disposed on the outer circumference of the first sleeve 11, and the second limiting portion 121 is disposed on the outer circumference of the second sleeve 12. In the second situation, Figure 1 and Figure 2 As shown, the first limiting portion 111 is arranged on the inner circumference of the first sleeve 11, and the second limiting portion 121 is arranged on the inner circumference of the second sleeve 12. In the first case and the second case, by arranging the first limiting portion 111 and the second limiting portion 121 on the circumference, the space utilization and integration of the overall equipment can be improved. In the above two cases, when the limiting member 16 is moved toward the target direction by an external force, the first sleeve 11 or the second sleeve 12 which is far from the target direction is first driven to move, which can prevent the spiral sleeve 1 from getting stuck during operation and make the spiral sleeve 1 work more smoothly.

[0053] In such Figure 2 In some of the embodiments shown, the limiting member 16 includes a main body 161, a first matching portion 162 and a second matching portion 163. The first matching portion 162 extends from one end of the main body 161 in a direction away from the main body 161, and the second matching portion 163 extends from the other end of the main body 161 in a direction away from the main body 161. The first matching portion 162 can abut against the first limiting portion 111, and the second matching portion 163 can abut against the second limiting portion 121.

[0054] As a second aspect of this embodiment, a spiral transmission assembly 2 is proposed, including the above-mentioned spiral sleeve 1, and also including a spline shaft 22, a screw rod 23, a screw nut 24, a connecting piece and an outer cylinder 21, the screw rod 23 is threadedly connected to the screw nut 24, one end of the connecting piece is connected to the screw nut 24, and the other end is connected to the connecting position 164, the spiral sleeve 1 is sleeved on the spline shaft 22, and the outer cylinder 21 is sleeved on the spiral sleeve 1.

[0055] Regarding the shapes of the first limiting portion 111 and the second limiting portion 121: the first limiting portion 111 can be a depression or a protrusion arranged on the first sleeve 11, but does not penetrate through the end of the first sleeve 11 close to the elastic member; the second limiting portion 121 can be a depression or a protrusion arranged on the second sleeve 12, but does not penetrate through the end of the second sleeve 12 close to the elastic member.

[0056] Regarding the connection method between the first limiting portion 111 and the second limiting portion 121: In some embodiments, the first limiting portion 111 and the first sleeve 11 are integrally fixedly connected, and the second limiting portion 121 and the second sleeve 12 are also integrally fixedly connected. The limiting member 16 is firstly arranged on the first limiting portion 111 and the second limiting portion 121, and respectively abuts against the first limiting portion 111 or the second limiting portion 121 during movement.

[0057] In such Figure 2 In some of the illustrated embodiments, the first limiting portion 111 and the first sleeve 11 may be detachably fixedly connected, and the second limiting portion 121 and the second sleeve 12 may also be detachably fixedly connected.

[0058] In such Figures 4 to 6 In the embodiment of the spiral transmission assembly 2 shown, the connecting member is an ear piece 25. In fact, the connecting member can also be a sliding piece or other components. The spline shaft 22 is provided with a first groove inside and a second groove extending along its axis on the outer circumference, the first groove and the second groove are connected, the screw nut 24 is provided in the inner groove of the spline shaft 22, one end of the ear piece 25 passes through the second groove and is connected to the screw nut 24, and the other end of the ear piece 25 is connected to the connecting position 164 in the limiting member 16, the first limiting portion 111 is arranged between the first matching portion 162 and the second matching portion 163, and the second limiting portion 121 is also arranged between the first matching portion 162 and the second matching portion 163, the first sleeve 11, the elastic member and the second sleeve 12 are sequentially sleeved on the spline shaft 22, the first limiting portion 111 is fixedly connected to the first sleeve 11 by bolts or screws, and the second limiting portion 121 is fixedly connected to the second sleeve 12 by bolts or screws. At this time, the first limiting portion 111 can abut against the first matching portion 162, or the second limiting portion 121 can abut against the second matching portion 163 to limit the movement range of the first sleeve 11 and the second sleeve 12. The above embodiment cleverly utilizes the internal space and arranges the components that limit the motion range of the first sleeve 11 and the second sleeve 12 inside them, thereby significantly improving the space utilization and integration of the overall device. This design concept not only makes the entire mechanical system more compact, but also enhances its structural stability and reliability.

[0059] Regarding the guiding function of the limiter 16: In some embodiments, after the limiter 16 cooperates with the first limiter 111 and the second limiter 121, it is only used to limit the movement of the first sleeve 11 and the second sleeve 12 within a certain range. The limiter 16, the first limiter 111 and the second limiter 121 do not have a guiding function. At this time, when the spiral sleeve 1 needs to move linearly, a straight spline 15 can be added to the circumference of the first sleeve 11 and the second sleeve 12, and the straight spline 15 and the external components can cooperate to achieve linear motion. In other embodiments, the limiter 16 not only has the function of limiting the movement range of the first sleeve 11 and the second sleeve 12, but also has a guiding function, such as Figure 2 and Figure 4 As shown, when the main body 161 of the stopper 16 is a linear guide, the first sleeve 11 and the second sleeve 12 can move linearly along the main body 161 of the stopper 16. Furthermore, a spur spline 15 can also be provided on the circumference of the first sleeve 11 and the second sleeve 12 to improve the stability and bearing capacity of the movement of the first sleeve 11 and the second sleeve 12. In addition, when the guide main body 161 of the stopper 16 is a spiral guide, the first sleeve 11 and the second sleeve 12 can rotate along the main body 161, and similar technical effects can also be achieved in some real-time scenarios.

[0060] As a third aspect of this embodiment, a solar device is provided, comprising the above-mentioned spiral transmission assembly 2, a light receiving member and a column 4, wherein the fixed end of the spiral transmission assembly 2 is connected to the column 4, and the moving end of the spiral transmission assembly 2 is connected to the light receiving member. Figure 7 In some of the embodiments shown, the light receiving element is a photovoltaic panel 3. In fact, the light receiving element may be a component for utilizing solar energy, such as a heat collecting tube and a focusing trough.

[0061] When the solar device is stationary or performing solar tracking and is affected by external factors such as wind, the photovoltaic panel 3 will shake. The shaking of the photovoltaic panel 3 will apply a force to the moving end of the spiral transmission component 2. The moving end of the spiral transmission component 2 transfers the force to the spiral anti-backlash sleeve, causing the first sleeve 11 or the second sleeve 12 that abuts the moving end to have a tendency to move axially. Since an elastic member is provided in the spiral anti-backlash sleeve, the first sleeve 11 and the second sleeve 12 will move relative to each other due to the elastic force, thereby indirectly reducing the influence of the force brought by external factors such as wind on the transmission component, allowing the spiral transmission component 2 to have the ability to buffer such force. The shock-absorbing and buffering capacity of the spiral anti-backlash sleeve is not limited to its application in solar devices, but can also be used in other structures that are prone to vibration or shaking.

[0062] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0063] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0064] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "provided with", "connected", etc. should be understood in a broad sense. 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 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 present invention can be understood according to specific circumstances.

[0065] 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 fall within the scope of the present utility model.

Claims

1. A spiral sleeve, characterized in that: include, A first sleeve, a second sleeve and an elastic member, wherein the first sleeve and the second sleeve are coaxially arranged, the circumferences of the first sleeve and the second sleeve are both provided with threads with the same pitch, and the elastic member is arranged between the first sleeve and the second sleeve; At least one stopper, the stopper being provided with a connection position for connecting with an external active component, the stopper comprising a main body, a first matching portion and a second matching portion, the first matching portion extending from one end of the main body in a direction away from the main body, and the second matching portion extending from the other end of the main body in a direction away from the main body; The first sleeve is provided with a first limiting portion that cooperates with the first matching portion, and the first limiting portion does not pass through the first sleeve; the second sleeve is provided with a second limiting portion that cooperates with the second matching portion, and the second limiting portion does not pass through the second sleeve; the first matching portion is used to abut against the first limiting portion, and the second matching portion is used to abut against the second limiting portion.

2. The spiral sleeve according to claim 1, characterized in that: The threads are arranged on the outer circumferences of the first sleeve and the second sleeve, and the inner circumferences of the first sleeve and the second sleeve are provided with spur splines; Alternatively, the thread is provided on the inner circumference of the first sleeve and the second sleeve, and the outer circumference of the first sleeve and the second sleeve is provided with a straight spline.

3. The spiral sleeve according to claim 2, characterized in that: The thread is a helical spline, and the helical spline and / or the spur spline are involute splines.

4. The spiral sleeve according to claim 1, characterized in that: The helix angle of the thread is greater than 0 degree and less than 45 degrees.

5. The spiral sleeve according to claim 1, characterized in that: The elastic member is a wave spring.

6. The spiral sleeve according to claim 5, characterized in that: The first sleeve and / or the second sleeve is provided with a spring groove for accommodating the wave spring.

7. The spiral sleeve according to claim 1, characterized in that: The first limiting portion is provided on the inner circumference of the first sleeve, and the second limiting portion is provided on the inner circumference of the second sleeve; Alternatively, the first limiting portion is provided on the outer circumference of the first sleeve, and the second limiting portion is provided on the outer circumference of the second sleeve; When the limiting member moves toward the target direction, the limiting member abuts against and drives the first sleeve or the second sleeve which is farther from the target direction to move.

8. The spiral sleeve according to claim 1, characterized in that: The first matching portion is detachably fixedly connected to the first sleeve, and the first matching portion is detachably fixedly connected to the first sleeve.

9. A screw transmission assembly, characterized in that: The spiral sleeve comprises the spiral sleeve as described in any one of claims 1 to 8, and further comprises a spline shaft, a screw rod, a screw rod nut, a connecting piece and an outer cylinder, wherein the screw rod is threadedly connected to the screw rod nut, one end of the connecting piece is connected to the screw rod nut, and the other end is connected to the connecting position, the spiral sleeve is sleeved on the spline shaft, and the outer cylinder is sleeved on the spiral sleeve.

10. A solar energy device, characterized in that: It includes the spiral transmission assembly as described in claim 9 above, and also includes a light receiving member and a column, wherein the fixed end of the spiral transmission assembly is connected to the column, and the moving end of the spiral transmission assembly is connected to the light receiving member plate.

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