Transmission sleeve suitable for screw transmission, transmission assembly and solar device

Abstract

The utility model relates to the field of screw transmission, in particular to a transmission sleeve suitable for screw transmission, a transmission assembly and a solar device. Firstly, the transmission sleeve is provided and comprises a first sleeve body and a second sleeve body, and a middle piece used for adjusting the distance between the first sleeve body and the second sleeve body is arranged between the first sleeve body and the second sleeve body; the first sleeve is provided with a mounting part A, the second sleeve is provided with a mounting part B, and under the cooperation of the mounting part A and the mounting part B, the first sleeve can move in the axial limiting range relative to the second sleeve; the transmission sleeve is provided with a first spline and a second spline, and at least one of the first spline and the second spline is a spiral spline. The transmission assembly is provided according to the transmission sleeve. Finally, the solar device is provided according to the transmission assembly. The spiral spline has the beneficial effects that the spiral spline is conveniently connected with a driving component while the transmission gap is reduced.

Description

Technical Field

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

[0002] The helical transmission assembly includes a transmission sleeve and an outer sleeve. The outer circumference of the transmission sleeve is provided with a helical spline, and the inner circumference of the outer sleeve is provided with a helical spline that matches the transmission sleeve. The outer sleeve is sleeved on the transmission sleeve and the two have the same axis. When the transmission sleeve moves linearly along its own axis, the outer sleeve rotates around its axis through the cooperation of the inner and outer helical splines.

[0003] In terms of the processing of helical splines, it is usually easier to process the outer helical splines of the transmission sleeve, but it is difficult to achieve high processing accuracy for the outer sleeve because the helical splines need to be processed on the inner circumference with limited space. Therefore, a large gap will be generated between the transmission sleeve and the outer sleeve. This gap will cause the transmission sleeve or the outer sleeve to shake in the helical spline transmission, and further affect the movement state of subsequent connecting parts.

[0004] Therefore, how to design a structure that can reduce the transmission clearance between the transmission sleeve and the outer sleeve has become a technical problem that needs to be solved urgently. Utility Model Content

[0005] The utility model solves the problem of transmission gap between the transmission sleeve and the outer cylinder and provides a transmission sleeve suitable for spiral transmission. According to the transmission sleeve, the utility model further provides a transmission component and provides a solar device from the transmission component.

[0006] As a first aspect of the utility model, a transmission sleeve is provided, comprising a first sleeve and a second sleeve arranged coaxially, wherein an intermediate piece for adjusting the distance between the first sleeve and the second sleeve is arranged between the first sleeve and the second sleeve;

[0007] The first sleeve is provided with a mounting portion A, and the second sleeve is provided with a mounting portion B. Under the cooperation of the mounting portion A and the mounting portion B, the first sleeve can move relative to the second sleeve within a limited range in its axial direction;

[0008] The inner circumference of the transmission sleeve is provided with a first spline, and the outer circumference of the transmission sleeve is provided with a second spline, and at least one of the first spline and the second spline is a helical spline.

[0009] Preferably, the first spline is a helical spline, and the second spline is a straight spline; or, the second spline is a helical spline, and the first spline is a straight spline.

[0010] Preferably, the helical spline and / or the spur spline is an involute spline.

[0011] Preferably, the helix angle of the helical spline is greater than 0 degree and less than 45 degrees.

[0012] Preferably, the intermediate member is elastic.

[0013] Preferably, the intermediate piece is a wave spring.

[0014] Preferably, the intermediate piece comprises a bolt, the bolt is connected to the first sleeve, and the second sleeve is provided with a screw hole matched with the bolt.

[0015] Preferably, the mounting portion A includes a first sleeve connecting portion, and the mounting portion B includes a second sleeve connecting portion, and the first sleeve and the second sleeve are sleeved together through the first sleeve connecting portion and the second sleeve connecting portion.

[0016] Preferably, the mounting portion A also includes a protrusion provided on the circumferential surface of the first sleeve portion, the protrusion extending in the direction of the mounting portion B, and the mounting portion B also includes a groove for accommodating the protrusion, so that the first sleeve and the second sleeve can move within their axial limited range through the cooperation of the protrusion and the groove.

[0017] Preferably, the groove includes a connected installation groove and a limiting groove, one end of the installation groove passes through the end of the installation part B close to the first sleeve, and the limiting groove is connected to the other end of the installation groove, and the limiting groove is used to limit the movement range of the protrusion.

[0018] Preferably, it further comprises at least one connection position for connecting with a transmission component, wherein the connection position is arranged on the inner circumference of the transmission sleeve, and the connection position is a protrusion or a depression.

[0019] Preferably, the middle piece is elastic and is connected to the first sleeve and the second sleeve respectively;

[0020] The connecting position is a depression provided on the first sleeve, and the connecting position starts from one end of the first sleeve close to the second sleeve and extends toward one end away from the second sleeve but does not pass through the first sleeve; and / or, the connecting position is a depression provided on the second sleeve, and the connecting position starts from one end of the second sleeve close to the first sleeve and extends toward one end away from the first sleeve but does not pass through the second sleeve.

[0021] As a second aspect of the present invention, a transmission assembly is proposed, comprising the above-mentioned transmission sleeve, and also comprising a spline shaft, a screw rod, a screw nut, an ear piece and an outer tube, the screw rod being threadedly connected to the screw nut, one end of the ear piece being connected to the screw nut, and the other end being connected to the connecting position, the transmission sleeve being sleeved on the spline shaft, and the outer tube being sleeved on the transmission sleeve.

[0022] As a third aspect of the utility model, a solar energy device is proposed, comprising the above-mentioned transmission assembly, and also comprising a photovoltaic panel and a column, wherein the fixed end of the transmission assembly is connected to the column, and the moving end of the transmission assembly is connected to the photovoltaic panel.

[0023] The beneficial effects of the utility model are:

[0024] 1. By using the middle piece, the spacing between the first sleeve and the second sleeve can be adjusted. In the transmission assembly using the transmission sleeve proposed in the present application, the helical spline in the first sleeve only cooperates with one side of the external keyway, and the helical spline in the second sleeve cooperates with the other side of the external keyway, which overcomes the problem of transmission clearance between components such as the transmission sleeve and the outer cylinder caused by insufficient processing accuracy; the requirements for the processing accuracy of the helical spline are reduced, and the movement accuracy and stability of the transmission sleeve and the outer cylinder are improved. Further, in the embodiment in which the middle piece is elastic, the transmission sleeve is affected by the elastic force when it moves, 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, and the maintenance work is reduced; at the same time, the middle piece is set as an elastic component. When subjected to external impact force, since the helical splines on the first sleeve and the second sleeve cooperate with different sides of the keyway respectively, the external impact force is absorbed by the elastic piece, reducing the direct impact of the external impact force on various parts of the transmission assembly.

[0025] 2. In the embodiment where the transmission sleeve is provided with both a helical 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 transmission 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 transmission sleeve to abut against the spline shaft. This abutting effect will further enhance the tightness of the fit between the helical spline and the spur spline, thereby further reducing the fit clearance between the transmission sleeve and the spline shaft and enhancing the working stability of the transmission assembly.

[0026] 3. Usually, the transmission sleeve needs to be connected to an external active component, and the external active component drives the transmission sleeve to move along its axis. In some embodiments of the transmission assembly proposed by the utility model, the active component is a screw nut, and the screw nut is connected to the transmission sleeve through an ear piece and a connecting position arranged inside the transmission sleeve. The connecting position is groove-shaped, and the connecting position passes through the end position where the first sleeve and the second sleeve are connected from the inside of the transmission sleeve, but does not pass through the two ends of the transmission sleeve. During installation, one end of the ear piece is connected to the screw nut, and the other end of the ear piece is arranged inside the first sleeve and / or the second sleeve when the first sleeve and the second sleeve are not connected. Then, through the cooperation of the mounting part A and the mounting part B, while the first sleeve and the second sleeve are connected, the ear piece cannot be separated from the transmission sleeve when it moves in the axial direction of the transmission sleeve. At this time, the ear piece can be connected to the transmission sleeve without adding an additional complex structure, which improves economic benefits and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the transmission sleeve in this embodiment.

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

[0029] Figure 3 for Figure 1 Partial schematic diagram at point A in the middle.

[0030] Figure 4 Schematic diagram of the transmission assembly in this embodiment.

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

[0032] in:

[0033] 1. Transmission sleeve;

[0034] 11. first sleeve; 111. mounting portion A; 1111. first sleeve connection portion; 1112. positioning portion; 1113. pin;

[0035] 12. second sleeve; 121. mounting portion B; 1211. second sleeve connection portion; 1212. "L"-shaped groove;

[0036] 13. Wave spring;

[0037] 14. Helical spline;

[0038] 15. Straight spline;

[0039] 2. Outer cylinder; 3. Spline shaft; 4. Screw; 5. Screw nut; 6. Ear. DETAILED DESCRIPTION

[0040] The present application is further described in detail below in conjunction with specific drawings.

[0041] like Figure 1 and Figure 2 As shown, as the first aspect of the utility model, a transmission sleeve 1 is proposed, comprising a first sleeve 11 and a second sleeve 12 arranged coaxially, and an intermediate piece for adjusting the distance between the first sleeve 11 and the second sleeve 12 is arranged between the first sleeve 11 and the second sleeve 12. The first sleeve 11 is provided with a mounting portion A111, and the second sleeve 12 is provided with a mounting portion B121. Under the cooperation of the mounting portion A111 and the mounting portion B121, the first sleeve 11 can move relative to the second sleeve 12 within a limited range of its axial direction. At least one helical spline 14 is provided on the circumferential surface of the transmission sleeve 1.

[0042] Regarding the structure and relative size of the first sleeve 11 and the second sleeve 12: the helical spline 14 provided on the transmission sleeve 1 is provided on the first sleeve 11 and the second sleeve 12 respectively, and the lead of the helical spline 14 provided on the first sleeve 11 and the second sleeve 12 is basically the same (the lead of the two may be slightly different according to the transmission requirements). In addition, the first sleeve 11 and the second sleeve 12 can be structures of the same size, or they can be relatively large or relatively small (the larger sleeve is the main sleeve, and the smaller sleeve is the auxiliary sleeve). It should be noted that, in general, "larger" and "smaller" refer to the length of the first sleeve 11 or the second sleeve 12 in the axial direction, usually by driving the larger sleeve.

[0043] In such Figure 2 In the embodiment shown, the outer circumference of the transmission sleeve 1 is provided with a helical spline 14, and the inner circumference of the transmission sleeve 1 is provided with a spur spline 15. In other embodiments, the inner circumference of the transmission sleeve 1 is provided with a helical spline 14, and the outer circumference of the transmission sleeve 1 is provided with a spur spline 15.

[0044] In some embodiments, the helix angle of the helical spline 14 is greater than 0 degrees and less than 45 degrees. At this time, the helical spline 14 can be understood as a helical spline. There is a negative correlation between the helix angle and the lead of the helical spline 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 transmission sleeve 1 is driven to rotate with the external component is correspondingly reduced. However, if the helix angle of the helical spline 14 is adjusted to close to 0 degrees, although the required force is reduced, it will cause the length of the transmission sleeve 1 to increase significantly when the relative rotation is 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 transmission sleeve 1 is shorter when the relative rotation is a certain angle, the requirements for surface roughness are significantly improved, and the requirements for applying the force are also correspondingly increased. Therefore, after experimental summary, in the embodiment where the helix angle of the helical spline 14 is 13 degrees, the transmission sleeve 1 proposed in this embodiment can achieve stable transmission without occupying space.

[0045] Furthermore, the helical spline 14 and / or the spur spline 15 can be configured as an involute spline. The involute helical spline 14 provides a larger contact area in transmitting torque and motion, and also has advantages in terms of automatic centering, high installation accuracy and high load-bearing capacity.

[0046] In some embodiments, the mounting portion A111 includes a first sleeve portion 1111, and the mounting portion B121 includes a second sleeve portion 1211, and the first sleeve 11 and the second sleeve 12 are connected through the first sleeve portion 1111 and the second sleeve portion 1211. Figure 1 and 2 As shown, the first sleeve connection portion 1111 is formed by extending from one end of the first sleeve 11 close to the second sleeve 12 in the axial direction of the second sleeve 12, and the second sleeve connection portion 1211 is formed by extending and cutting from one end close to the first sleeve 11 in the axial direction away from the first sleeve 11. In other embodiments, the first sleeve connection portion 1111 and the second sleeve connection portion 1211 can be arranged in the opposite direction, which will not be described in detail here.

[0047] In some embodiments, the mounting portion A111 also includes a protrusion provided on the circumferential surface of the first sleeve portion 1111, and the protrusion extends toward the mounting portion B121. The mounting portion B121 also includes a groove for accommodating the protrusion, and the groove is provided on the second sleeve portion 1211. The length direction of the groove is consistent with the circumferential direction of the second sleeve portion 1211. Along the axial direction of the first sleeve 11, the groove width dimension of the groove is greater than the dimension of the protrusion.

[0048] Regarding the arrangement of the protrusion and the groove: the protrusion can be formed in a variety of ways, but the protrusion and the groove cannot affect the rotational movement of the helical spline 14 on the transmission sleeve 1, nor can they affect the linear movement of the straight spline. Figure 1 and Figure 2 In the embodiment, the pin 1113 can be understood as a separate raised portion, and the first sleeve 1111 is provided with a positioning portion 1112 for connecting the pin 1113. The pin 1113 can be fixedly connected to the first sleeve 11 by welding, and the groove on the second sleeve 1211 is set to be "L"-shaped. The first sleeve 11 is inserted into the "L"-shaped groove 1212 on the second sleeve 12 through the pin 1113 and then rotated to connect the first sleeve 11 and the second sleeve 12. At this time, since the transmission sleeve 1 is provided with a spur spline 15, after the first sleeve 11 and the second sleeve 12 are connected, the transmission sleeve 1 is fixedly connected to the external component through the spur spline 15, so that the first sleeve 11 and the second sleeve 12 cannot rotate relative to each other, so the pin 1113 of the first sleeve 11 cannot be detached from the "L"-shaped groove 1212 of the second sleeve 12. In other embodiments, a threaded portion may be provided on the pin 1113, and the positioning portion 1112 also has a threaded portion that matches the threaded portion, so that the pin 1113 and the first sleeve 11 are fixedly connected by a threaded connection. Figure 2 In some of the illustrated embodiments, the “L”-shaped groove 1212 penetrates the outer circumference of the second sleeve 12, but in other embodiments, the “L”-shaped groove may not penetrate.

[0049] In some embodiments, the groove includes a connecting mounting groove and a limiting groove, one end of the mounting groove passes through the end of the mounting portion B121 close to the first sleeve 11, and the limiting groove is connected to the other end of the mounting groove, and the limiting groove is used to limit the motion range of the protrusion. The above-mentioned "L"-shaped groove can be understood as an embodiment including a mounting groove and a limiting groove.

[0050] Regarding the axial limit range of the first sleeve 11 relative to the second sleeve 12: Figure 1 and Figure 3 In the embodiment shown, the limited range is mainly achieved by the cooperation between the pin 1113 and the groove, and the shape of the groove is usually extended along the axial direction of the transmission sleeve 1 (without passing through the two ends of the second sleeve 12). When the pin 1113 enters the groove and cooperates with the groove, the pin 1113 can move in the axial direction of the transmission sleeve 1. At this time, the movement range of the pin 1113 is the limited range.

[0051] Regarding the middle piece arranged between the first sleeve 11 and the second sleeve 12: In some embodiments, the middle piece is elastic. When the transmission sleeve 1 moves, the first sleeve 11 is driven alone to move along its own axis (the second sleeve 12 is driven alone as well), and the second sleeve 12 cannot be separated from the first sleeve 11 within the limited range of the mounting portion A111 and the mounting portion B121. The elastic middle piece will continuously apply elastic force to the first sleeve 11 or the second sleeve 12, so that the first sleeve 11 and the second sleeve 12 are separated from or close to each other. Since the transmission sleeve 1 is in a spiral transmission state with the external component through the spiral spline 14, the middle piece allows the transmission sleeve 1 to continuously maintain contact with the external component, thereby reducing the clearance between the transmission sleeve 1 and the external component, and making the spiral transmission of the transmission sleeve 1 more stable and reliable. In addition, when subjected to external impact force, the elastic piece can absorb the external impact force, reduce the direct impact of the external impact force on various parts of the transmission assembly, and effectively allow the transmission assembly to have a certain buffering and vibration reduction capacity. Furthermore, in the implementation mode where the middle piece adopts the wave spring 13, compared with other springs, the wave spring 13 has a more compact structure, is suitable for providing a stronger elastic force in a limited space, and is particularly suitable for occasions where the installation space is limited.

[0052] In other embodiments, the intermediate member is a bolt and a nut, the bolt is connected to the first sleeve 11, and the nut is connected to the second sleeve 12. In this case, the limited range of the first sleeve 11 and the second sleeve 12 can only be adjusted indirectly by external force. Furthermore, a power device such as a motor can be arranged inside the transmission sleeve 1, and the power device controls the bolt to automatically adjust the limited range of the first sleeve 11 and the second sleeve 12 according to the control requirements.

[0053] In some embodiments, at least one connection position for connecting with the transmission component is provided on the inner circumference of the transmission sleeve 1. The connection position is used to connect the transmission sleeve 1 with the active component, and the transmission sleeve 1 is driven by the active component to move. The connection position can be a protrusion or a depression. Figure 5 In the illustrated embodiment, the active component is a lug 6 connected to the nut, and in this case, the connection position arranged on the inner circumference of the transmission sleeve 1 is a recess.

[0054] In some embodiments, the middle piece is elastic and is connected to the first sleeve 11 and the second sleeve 12 respectively. In this case, there are three situations regarding the setting of the connection position:

[0055] In the first case, the connection position is a depression on the first sleeve 11 , and the connection position starts from an end of the first sleeve 11 close to the second sleeve 12 and extends toward an end away from the second sleeve 12 but does not pass through the first sleeve 11 .

[0056] In the second case, the connection position is a depression provided on the second sleeve 12 , and the connection position starts from an end of the second sleeve 12 close to the first sleeve 11 and extends toward an end away from the first sleeve 11 but does not pass through the second sleeve 12 .

[0057] In the third case, the connection position can be divided into a first connection position and a second connection position, the first connection position is a depression provided in the first sleeve 11, and the second connection position is a depression provided in the second sleeve 12, the first connection position starts from one end of the first sleeve 11 close to the second sleeve 12, and extends toward one end away from the second sleeve 12 but does not pass through the first sleeve 11. The second connection position starts from one end of the second sleeve 12 close to the first sleeve 11, and extends toward one end away from the first sleeve 11 but does not pass through the second sleeve 12.

[0058] As a second aspect of the present invention, it is proposed as follows Figure 4 and Figure 5 The transmission assembly shown includes the transmission sleeve 1 mentioned above, and also includes a screw 4, a screw nut 5, an ear piece 6, a spline shaft 3 and an outer tube 2. The screw nut 5 is threadedly connected to the screw 4. The ear piece 6 is arranged inside the spline shaft 3. One end of the ear piece 6 is connected to the screw nut 5, and the other end is connected to the connection position. The transmission sleeve 1 is arranged on the spline shaft 3, and the outer tube 2 is sleeved on the transmission sleeve 1. Figure 5 In the illustrated embodiment, two lugs 6 are provided. In some other embodiments, more lugs 6 may be provided to improve the stability of the connection between the screw nut 5 and the transmission sleeve 1 .

[0059] As a third aspect of the utility model, a solar energy device is proposed, including the above-mentioned transmission assembly, and also including a photovoltaic panel and a column, wherein the fixed end of the transmission assembly is connected to the column, and the moving end of the transmission assembly is connected to the photovoltaic panel.

[0060] When the solar device is stationary or performing solar tracking and is affected by external factors such as wind, the photovoltaic panel will shake. When the photovoltaic panel shakes, the transmission component will also vibrate. The vibration of the transmission component will be transmitted to the transmission sleeve 1. Since the transmission sleeve 1 is provided with an elastic middle piece, the first sleeve 11 and the second sleeve 12 will move relative to each other under the action of elastic force, which indirectly reduces the effect of the force caused by the vibration on the transmission component, allowing the transmission component to have the ability to buffer such force. The shock-absorbing and buffering capacity of the transmission sleeve 1 is not limited to the application in solar devices, but can also be used in other structures that are prone to vibration or shaking.

[0061] 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.

[0062] 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.

[0063] 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.

[0064] 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 transmission sleeve suitable for spiral transmission, characterized in that: It comprises a first sleeve and a second sleeve which are coaxially arranged, wherein an intermediate piece for adjusting the distance between the first sleeve and the second sleeve is arranged between the first sleeve and the second sleeve; The first sleeve is provided with a mounting portion A, and the second sleeve is provided with a mounting portion B. Under the cooperation of the mounting portion A and the mounting portion B, the first sleeve can move relative to the second sleeve within a limited range in its axial direction; The inner circumference of the transmission sleeve is provided with a first spline, and the outer circumference of the transmission sleeve is provided with a second spline, and at least one of the first spline and the second spline is a helical spline.

2. The transmission sleeve suitable for spiral transmission as claimed in claim 1, characterized in that: The first spline is a helical spline, and the second spline is a straight spline; or, the second spline is a helical spline, and the first spline is a straight spline.

3. The transmission sleeve suitable for spiral transmission as claimed in claim 2, characterized in that: The helical spline and / or the spur spline are / is an involute spline.

4. The transmission sleeve suitable for spiral transmission as claimed in claim 1, characterized in that: The helix angle of the helical spline is greater than 0 degree and less than 45 degrees.

5. The transmission sleeve suitable for spiral transmission as claimed in claim 1, characterized in that: The middle piece has elasticity.

6. The transmission sleeve suitable for spiral transmission as claimed in claim 5, characterized in that: The intermediate piece is a wave spring.

7. The transmission sleeve suitable for spiral transmission as claimed in claim 1, characterized in that: The intermediate piece comprises a bolt, and the bolt is connected to the first sleeve. The second sleeve is provided with a screw hole matched with the bolt.

8. The transmission sleeve suitable for spiral transmission as claimed in claim 1, characterized in that: The mounting portion A includes a first sleeve connection portion, and the mounting portion B includes a second sleeve connection portion, and the first sleeve and the second sleeve are sleeved together through the first sleeve connection portion and the second sleeve connection portion.

9. The transmission sleeve suitable for spiral transmission as claimed in claim 8, characterized in that: The mounting portion A also includes a protrusion provided on the circumferential surface of the first sleeve portion, and the protrusion extends toward the mounting portion B. The mounting portion B also includes a groove for accommodating the protrusion, and the first sleeve and the second sleeve can move within their axial limited range through the cooperation of the protrusion and the groove.

10. The transmission sleeve suitable for spiral transmission as claimed in claim 9, characterized in that: The groove includes a connected installation groove and a limiting groove, one end of the installation groove passes through the end of the installation part B close to the first sleeve, and the limiting groove is connected to the other end of the installation groove. The limiting groove is used to limit the movement range of the protrusion.

11. The transmission sleeve suitable for spiral transmission as claimed in claim 1, characterized in that: It also includes at least one connection position for connecting with a transmission component, wherein the connection position is arranged on the inner circumference of the transmission sleeve, and the connection position is a protrusion or a depression.

12. The transmission sleeve suitable for spiral transmission as claimed in claim 11, characterized in that: The middle piece is elastic and is connected to the first sleeve and the second sleeve respectively; The connecting position is a depression provided on the first sleeve, and the connecting position starts from one end of the first sleeve close to the second sleeve and extends toward one end away from the second sleeve but does not pass through the first sleeve; and / or, the connecting position is a depression provided on the second sleeve, and the connecting position starts from one end of the second sleeve close to the first sleeve and extends toward one end away from the first sleeve but does not pass through the second sleeve.

13. A transmission assembly, characterized in that: The invention comprises a transmission sleeve suitable for spiral transmission as described in any one of claims 1 to 12 above, and further comprises a spline shaft, a screw, a screw nut, an ear piece and an outer tube, wherein the screw is threadedly connected to the screw nut, one end of the ear piece is connected to the screw nut, and the other end is connected to the connecting position, the transmission sleeve is sleeved on the spline shaft, and the outer tube is sleeved on the transmission sleeve.

14. A solar energy device, characterized in that: The transmission component comprises the transmission component as described in claim 13 above, and further comprises a photovoltaic panel and a column, wherein the fixed end of the transmission component is connected to the column, and the moving end of the transmission component is connected to the photovoltaic panel.

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