Spiral anti-backlash sleeve, spiral transmission assembly and solar device

Abstract

The utility model relates to the field of spiral transmission, in particular to a spiral anti-backlash sleeve, a transmission assembly and a solar device. The spiral anti-backlash sleeve comprises a first sleeve body and a second sleeve body which are coaxially arranged, threads with the consistent thread pitch are arranged on the circumferential faces of the first sleeve body and the second sleeve body, the first sleeve body is provided with a first guide rail part, the second sleeve body is provided with a second guide rail part, and an elastic piece is arranged between the first sleeve body and the second sleeve body; the bearing and guiding piece comprises at least one connecting position used for being connected with an external driving component; the first sleeve and the second sleeve of the guide bearing piece are movably connected; the device further comprises an anti-disengaging part which is fixedly connected with the bearing and guiding piece and used for limiting the movement range of the first sleeve and the second sleeve. The screw drive assembly is provided according to the drive sleeve. Finally, the solar device is provided according to the spiral transmission assembly. The spiral spline has the beneficial effects that the spiral transmission stability 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 anti-backlash 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 anti-backlash sleeve to solve the problem of transmission gap of a spiral transmission component. According to the spiral anti-backlash sleeve, the utility model further provides a spiral transmission component and a solar device based on the spiral transmission component.

[0005] As a first aspect of the utility model, a spiral anti-backlash sleeve is proposed, 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, the first sleeve is provided with a first guide rail portion, the second sleeve is provided with a second guide rail portion, and the elastic member is provided between the first sleeve and the second sleeve;

[0007] At least one guide member, the guide member comprising at least one connection position for connecting with an external active component; the guide member sequentially passes through the first guide rail portion and the second guide rail portion, and is movably connected with the first sleeve and the second sleeve;

[0008] It also includes an anti-slip portion, which is fixedly connected to the guide member and is used to limit the movement range of the first sleeve and the second sleeve.

[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 thread is provided on the outer circumference of the first sleeve and the second sleeve, the first guide rail portion is groove-shaped and passes through the inner circumference of the first sleeve, and the second guide rail portion is groove-shaped and passes through the inner circumference of the second sleeve.

[0016] Preferably, the inner circumferential surface of the anti-slip part is provided with a spur spline, the spur spline is provided with a fixing part for fixedly connecting with the guide member, the fixing part is provided with a connecting hole arranged along the radial direction of the anti-slip part, and the axis of the connecting hole is located at the key teeth of the spur spline on the inner circumferential surface of the anti-slip part.

[0017] Preferably, the anti-slip portion is in surface contact with the first sleeve and / or the second sleeve, and a contact area of ​​the surface contact is close to an area of ​​an end surface of the first sleeve or the second sleeve.

[0018] Preferably, the bearing and guiding member is provided with a third guide rail portion at a position close to the axis of the spiral anti-backlash sleeve, the third guide rail portion is used for being connected with an external active component, and the connection position is provided at the third guide rail portion.

[0019] Preferably, the third guide rail portion extends from one end portion of the supporting member toward the other end portion, but does not penetrate the supporting member.

[0020] As the second aspect of the utility model, a spiral transmission assembly includes the above-mentioned spiral anti-backlash sleeve, and also includes a spline shaft, a screw rod, a screw nut, a connecting piece and an outer cylinder, 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 anti-backlash sleeve is sleeved on the spline shaft, and the outer cylinder is sleeved on the spiral anti-backlash sleeve.

[0021] As a third aspect of the utility model, a solar energy device includes the above-mentioned spiral transmission assembly, 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.

[0022] The beneficial effects of the utility model are:

[0023] 1. By using an elastic member, the spacing between the first sleeve and the second sleeve can be adjusted. In the spiral transmission assembly using the spiral anti-backlash sleeve proposed by the utility model, the spiral spline in the first sleeve 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 clearance between the spiral anti-backlash sleeve and the outer cylinder due to insufficient processing accuracy; reduces the requirements for the processing accuracy of the spiral spline, and improves the movement accuracy and stability of the spiral anti-backlash sleeve and the outer cylinder. When the spiral anti-backlash sleeve moves, it is affected by 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, because the elastic member is elastic, when subjected to external impact force, the spiral splines on the first sleeve and the second sleeve respectively cooperate with different sides of the keyway, and the elastic member absorbs the external impact force, reducing the direct impact of the external impact force on various parts of the spiral transmission assembly.

[0024] 2. In the embodiment where the spiral anti-backlash 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 anti-backlash sleeve is also provided with a spur spline cooperating with the spline shaft, the relative rotation of the first sleeve and the second sleeve causes the spur spline in the spiral anti-backlash sleeve to abut against the spline shaft. This abutting action 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 anti-backlash sleeve and the spline shaft, and enhancing the stability of the spiral transmission assembly during operation.

[0025] 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.

[0026] 4. Since the anti-slip part is in surface contact with the first sleeve and / or the second sleeve, and the surface contact area is close to the area of ​​the end of the first sleeve or the second sleeve, in this case, the pushing surface of the anti-slip part pushing the first sleeve or the second sleeve is the largest, which increases the force area and makes the anti-slip part, the first sleeve and the second sleeve less likely to deform, thereby improving the overall bearing capacity and stability.

[0027] 5. 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

[0028] Figure 1 It is a schematic axonometric diagram of the spiral anti-backlash sleeve in this embodiment.

[0029] Figure 2Schematic diagram of the exploded view of the spiral anti-backlash sleeve in this embodiment.

[0030] Figure 3 It is a schematic front view of the end of the spiral anti-backlash sleeve in this embodiment.

[0031] Figure 4 for Figure 3 Section view at AA.

[0032] Figure 5 Schematic diagram of the axonometric view of the screw transmission assembly in this embodiment.

[0033] Figure 6 Schematic diagram of the exploded view of the screw transmission assembly in this embodiment.

[0034] Figure 7 A schematic diagram of a solar energy device.

[0035] in:

[0036] 1. Spiral anti-backlash sleeve;

[0037] 11. a first sleeve; 111. a first guide rail portion;

[0038] 12. second sleeve; 121. second guide rail portion;

[0039] 13. Wave spring;

[0040] 14. Thread;

[0041] 15. Straight spline;

[0042] 16. guide member; 161. main body; 162. third guide rail portion; 163. mounting position;

[0043] 17. Anti-slip part;

[0044] 2. Screw transmission assembly; 21. Outer cylinder; 22. Spline shaft; 23. Screw; 24. Screw nut; 25. Ear;

[0045] 3. Photovoltaic panels; 4. Pillars. DETAILED DESCRIPTION

[0046] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0047] As a first aspect of this embodiment, Figures 1 to 4As shown, a spiral anti-backlash sleeve 1 is proposed, including a first sleeve 11, a second sleeve 12 and an elastic member. 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 provided with threads 14 with consistent pitches, the first sleeve 11 is provided with a first guide rail portion 111, and the second sleeve 12 is provided with a second guide rail portion 121. The elastic member is arranged between the first sleeve 11 and the second sleeve 12; at least one guide member 16, the guide member 16 includes at least one connecting position 163 for connecting to an external active component; the guide member 16 passes through the first guide rail portion 111 and the second guide rail portion 121 in sequence, and is movably connected to the first sleeve 11 and the second sleeve 12; including an anti-slip portion 17, the anti-slip portion 17 is fixedly connected to the guide member 16, and is used to limit the movement range of the first sleeve 11 and the second sleeve 12.

[0048] 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 anti-backlash sleeve 1 is in a static state without being connected to an 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 anti-backlash sleeve 1 is connected to the external component, through the spiral transmission cooperation between the spiral anti-backlash sleeve 1 and the external component, the above misalignment will enable the spiral anti-backlash sleeve 1 and the external component to achieve a tight transmission state.

[0049] 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.

[0050] like Figures 1 to 6As shown, in some embodiments, when the outer circumference of the spiral anti-backlash sleeve 1 is provided with a thread 14, the inner circumference of the spiral anti-backlash sleeve 1 is provided with a spur spline 15, which can be conveniently and quickly connected or driven with an external component through the spur spline 15. 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 transmission sleeve 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 spiral anti-backlash 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 transmission sleeve 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 transmission sleeve and the spline shaft 22, and enhancing the stability of the spiral anti-backlash sleeve 1 when it moves and works along the spur spline 15.

[0051] 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.

[0052] In some embodiments, the helix angle of the thread 14 is greater than 0 degrees and less than 45 degrees. In this case, the thread 14 can be understood as a spiral spline. There is a 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 pushing the spiral anti-backlash sleeve 1 to rotate with the external component is correspondingly reduced. 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 anti-backlash sleeve 1 to increase significantly when it rotates relative to a certain angle, thereby occupying a large space, which brings 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 anti-backlash sleeve 1 is shorter when it rotates relative to a certain angle, the requirements for surface roughness are significantly improved, and the requirements for applying force are also correspondingly increased. Therefore, after experimental summary, in the embodiment where the helix angle of the thread 14 is 13 degrees, the spiral anti-backlash sleeve 1 proposed in this embodiment can achieve stable transmission without taking up space.

[0053] 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.

[0054] Regarding the guide member 16: In some embodiments, after the guide member 16 cooperates with the anti-slip portion 17, it is only used to limit the movement of the first sleeve 11 and the second sleeve 12 within a certain range. The guide member 16, the first guide rail portion 111 and the second guide rail portion 121 do not have a guiding function. At this time, the external component applies a force to the guide member to move along the axis to achieve the clearance elimination function of the spiral clearance elimination sleeve 1 proposed in this embodiment. In addition, when the spiral transmission sleeve 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 component cooperate to achieve linear motion. At this time, the force applied by the external component to the guide member can be along the axis or rotationally. In other embodiments, the guide member 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 As shown, when the main body 161 of the guide member 16 is a linear guide, the first sleeve 11 and the second sleeve 12 can move linearly along the main body 161 of the guide member 16. Furthermore, a straight spline 15 can also be added to the circumferential surface 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.

[0055] In some embodiments, when the guide body 161 of the guide member 16 is a spiral guide, the first sleeve 11 and the second sleeve 12 can rotate along the body 161, and similar technical effects can also be achieved in some implementation scenarios.

[0056] In some embodiments, the spiral anti-backlash sleeve 1 proposed in this embodiment is provided with a plurality of supporting guides 16. Furthermore, the plurality of supporting guides 16 are arranged in a circular array. This layout not only makes the distance between the supporting guides 16 more uniform, but also can effectively disperse the force, thereby significantly enhancing the overall strength and stability of the spiral anti-backlash sleeve 1.

[0057] Regarding the anti-falling part 17: Figure 2In some embodiments shown, after the guide member 16 is connected to the first sleeve 11 and the second sleeve 12, the anti-slip portion 17 includes two independent parts, which are fixedly connected to the two ends of the guide member 16 respectively, so as to achieve the above-mentioned effect of limiting the range of motion, wherein the fixed connection method can be a detachable threaded connection, a clamping connection, etc., or a non-detachable method such as welding. In some embodiments, one end of the guide member 16 is fixedly connected to an anti-slip portion 17, wherein the fixed connection refers to pre-welding or integral molding, and the other end is detachably fixedly connected to another anti-slip portion 17, and similar technical effects have been achieved.

[0058] In some embodiments, the anti-slip portion 17 can be manufactured by stamping, which can simplify the processing technology and save costs.

[0059] In some embodiments, the inner circumference of the anti-slip portion 17 is provided with a spur spline 15 and a fixing portion for fixing with the guide member 16, the fixing portion is groove-shaped and is provided at a raised portion of the spur spline 15 on the inner circumference of the anti-slip portion 17. The raised portion is as follows: Figure 3 The raised portion of the straight tooth spline 15 shown in the figure increases the thickness from the bottom of the groove of the fixing part to the outer peripheral surface of the anti-slip part 17. After the guide member 16 is inserted into the fixing part, a longer bolt can be used to fix the two together, thereby improving the connection strength between the guide member 16 and the fixing part and improving the operating stability of the spiral anti-backlash sleeve 1.

[0060] In some embodiments, the inner circumference of the anti-slip part 17 is provided with a spur spline 15, the spur spline 15 is provided with a fixing part for fixedly connecting with the guide member 16, the fixing part 17 is provided with a connecting hole arranged along the radial direction of the anti-slip part 17, and the axis of the connecting hole is located at the key teeth of the spur spline 15 on the inner circumference of the anti-slip part 17. This arrangement increases the depth of the connecting hole, and after the guide member 16 is inserted into the fixing part, a longer bolt can be used to cooperate with the connecting hole to fix the two together, thereby improving the connection strength between the guide member 16 and the fixing member, and enhancing the stability of the spiral anti-backlash sleeve 1 in operation.

[0061] In some embodiments, the anti-slip portion 17 is in surface contact with the first sleeve 11 and / or the second sleeve 12, and the contact area of ​​the surface contact is close to the area of ​​the end surface of the first sleeve 11 or the second sleeve 12. In the transmission movement of the spiral anti-backlash sleeve 1, the thrust directly applied to the first sleeve 11 or the second sleeve 12 is achieved by the anti-slip portion 17. Therefore, by increasing the contact area between the anti-slip portion 17 and the first sleeve 11 or the second sleeve 12, the pressure per unit area of ​​the first sleeve 11 and the second sleeve 12 can be reduced, and the risk of the first sleeve 11 and the second sleeve 12 being deformed by excessive pressure from the anti-slip portion 17 is reduced, thereby improving the overall stability.

[0062] Regarding the first guide rail portion 111 and the second guide rail portion 121: Figure 2 In the illustrated embodiment, the first guide rail portion 111 is in the form of a groove extending through the inner circumference of the first sleeve 11, and the second guide rail portion 121 is in the form of a groove extending through the inner circumference of the second sleeve 12. This connection method only requires sliding the supporting member 16 into the first guide rail portion 111 and the second guide rail portion 121, thereby simplifying the connection method between the first sleeve 11 and the second sleeve 12 and the supporting member 16.

[0063] In some embodiments, at least one connection position 163 for connecting with an external active component is further included, and the connection position 163 is disposed on the guide member 16. Figure 4 In the illustrated embodiment, the connection position 163 is a threaded hole 14, which is connected to the external active component by bolts or screws. The connection position 163 can also be connected to the external active component by welding, clamping, etc.

[0064] In some embodiments, the guide member 16 is provided with a third guide rail portion 162 near the axis of the spiral anti-backlash sleeve 1, and the third guide rail portion 162 is used to connect with the external active component. By providing the third guide rail portion 162, the external active component is allowed to slide on the third guide rail portion 162 to the connection position 163, which can make the connection between the guide member 16 and the external active component smoother and improve the installation speed.

[0065] In other embodiments, the third guide rail portion 162 extends from one end of the guide member 16 to the other end, but does not penetrate the guide member 16. Figure 2 As for the two openings at both ends of the third guide rail shown in the figure, it is sufficient as long as one end of the third guide rail is provided with an opening connected to the external active component. Such an arrangement can save processing procedures and reduce costs.

[0066] As a second aspect of this embodiment, a spiral transmission assembly 2 includes the above-mentioned spiral anti-backlash sleeve 1, and also includes 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 163. The spiral anti-backlash sleeve 1 is sleeved on the spline shaft 22, and the outer cylinder 21 is sleeved on the spiral anti-backlash sleeve 1.

[0067] like Figure 2 , Figure 4 and Figure 6 In the embodiment shown, the connecting member is an ear piece 25, and in fact, the connecting member can also be a sliding piece or other components. The spiral anti-backlash sleeve 1 is sleeved on the spline shaft 22, and the ear piece 25 is connected to the screw nut 24 and is pre-set on the spline shaft 22. The ear piece 25 slides to the connecting position 163 through the third guide rail portion 162, and is fixedly connected to the bearing guide 16 by bolts, so as to realize the transmission connection between the screw nut 24 and the spiral anti-backlash sleeve 1.

[0068] As a third aspect of this embodiment, a solar device includes the above-mentioned spiral transmission assembly 2, and also includes 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.

[0069] 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 transmits the force to the spiral anti-backlash sleeve 1, so that the first sleeve 11 or the second sleeve 12 abutting against the moving end has a tendency to move axially. Since an elastic member is provided in the spiral anti-backlash sleeve 1, the first sleeve 11 and the second sleeve 12 will move relative to each other under the action of the elastic force, thereby indirectly reducing the effect of the force brought by external factors such as wind on the spiral transmission component 2, so that the spiral transmission component 2 has the ability to buffer such force. The shock-absorbing and buffering capacity of the spiral anti-backlash sleeve 1 is not limited to its application in solar devices, but can also be used in other structures that are prone to vibration or shaking.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] 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 anti-backlash 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, the first sleeve is provided with a first guide rail portion, the second sleeve is provided with a second guide rail portion, and the elastic member is provided between the first sleeve and the second sleeve; At least one guide member, the guide member comprising at least one connection position for connecting with an external active component; the guide member sequentially passes through the first guide rail portion and the second guide rail portion, and is movably connected with the first sleeve and the second sleeve; It also includes an anti-slip portion, which is fixedly connected to the guide member and is used to limit the movement range of the first sleeve and the second sleeve.

2. The spiral anti-backlash 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 anti-backlash 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 anti-backlash 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 anti-backlash sleeve according to claim 1, characterized in that: The elastic member is a wave spring.

6. The spiral anti-backlash 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 anti-backlash sleeve according to claim 1, characterized in that: The thread is arranged on the outer circumference of the first sleeve and the second sleeve, the first guide rail portion is groove-shaped and penetrates the inner circumference of the first sleeve, and the second guide rail portion is groove-shaped and penetrates the inner circumference of the second sleeve.

8. The spiral anti-backlash sleeve according to claim 7, characterized in that: The inner circumference of the anti-slip part is provided with a spur spline, and the spur spline is provided with a fixing part for fixedly connecting with the guide member, and the fixing part is provided with a connecting hole arranged along the radial direction of the anti-slip part, and the axis of the connecting hole is located at the key teeth of the spur spline on the inner circumference of the anti-slip part.

9. The spiral anti-backlash sleeve according to claim 1, characterized in that: The anti-slip portion is in surface contact with the first sleeve and / or the second sleeve, and a contact area of ​​the surface contact is close to an area of ​​an end surface of the first sleeve or the second sleeve.

10. The spiral anti-backlash sleeve according to claim 1, characterized in that: The bearing and guiding member is provided with a third guide rail portion at a position close to the axis of the spiral anti-backlash sleeve. The third guide rail portion is used for matching and connecting with an external active component, and the connection position is provided at the third guide rail portion.

11. The spiral anti-backlash sleeve according to claim 10, characterized in that: The third guide rail portion extends from one end portion of the support guide toward the other end portion, but does not penetrate the support guide.

12. A screw transmission assembly, characterized in that: It comprises the spiral anti-backlash sleeve as described in any one of claims 1 to 11 above, and also comprises a spline shaft, a screw rod, a screw rod nut, a connecting piece and an outer cylinder, 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 anti-backlash sleeve is sleeved on the spline shaft, and the outer cylinder is sleeved on the spiral anti-backlash sleeve.

13. A solar energy device, characterized in that: It includes the spiral transmission assembly as described in claim 12 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.

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