Photovoltaic driver

Abstract

The utility model provides a photovoltaic driver, and relates to the field of transmission devices. The photovoltaic driver comprises a plurality of groups of driving units which are arranged side by side, and each group of driving units comprises a driving driving mechanism and a driven driving mechanism. The active driving mechanism comprises a rotary shell, a worm gear, a sliding bearing and a worm, the worm gear is rotatably matched with the rotary shell through the sliding bearing, the worm is installed on the rotary shell and meshed with the worm gear, and the worm and the rotary shell are relatively fixed in the circumferential direction of the worm gear; the worm is in transmission connection with the driven driving mechanism; the rotary shells of the driving driving mechanisms of the adjacent driving units are fixedly connected, and the driven driving mechanisms of the adjacent driving units are in transmission connection. The photovoltaic driver is simple in structure, stable and reliable in operation and capable of ensuring that the photovoltaic support obtains more stable holding torque under the condition of large wind load.

Description

Technical Field

[0001] The utility model relates to the field of transmission devices, and in particular to a photovoltaic driver. Background Art

[0002] Solar photovoltaic power generation systems are mainly divided into two categories: one is centralized, such as the Northwest photovoltaic power generation system; the other is distributed, such as the photovoltaic power generation system on the roof of industrial and commercial factory buildings and the photovoltaic power generation system on the roof of residential buildings. Photovoltaic brackets are mainly divided into fixed brackets and tracking brackets. The photovoltaic tracking reducer in the tracking bracket, the current mainstream driving mechanism is mainly electric push rods, gear reducers and rotary worm reducers. Since the rotary worm reducer is superior to the electric push rod and helical gear reducer in terms of torque, impact resistance and installation and maintenance, the rotary worm reducer is more widely used in photovoltaic tracking systems.

[0003] The inventors have found that the drive mechanism using a rotary worm gear reducer in the prior art has at least the following disadvantages:

[0004] In the prior art, it is inconvenient to assemble the worm gear and the housing, and the stability of the two when they rotate relative to each other during operation is low. Utility Model Content

[0005] The utility model aims to provide a photovoltaic driver, which can simplify the structure, reduce the difficulty of assembly, improve the assembly efficiency, extend the service life, and improve the operation stability.

[0006] The embodiment of the utility model is achieved as follows:

[0007] In a first aspect, the utility model provides a photovoltaic driver, comprising:

[0008] A plurality of drive units are arranged side by side, each of which comprises an active drive mechanism and a driven drive mechanism, wherein the active drive mechanism comprises a rotary shell, a worm wheel, a sliding bearing and a worm, wherein the worm wheel is rotatably matched with the rotary shell through the sliding bearing, the worm is mounted on the rotary shell and meshes with the worm wheel, and the worm and the rotary shell are relatively fixed in the circumferential direction of the worm wheel; the worm is transmission-connected to the driven drive mechanism; the rotary shells of the active drive mechanisms of adjacent drive units are fixedly connected, and the driven drive mechanisms of adjacent drive units are transmission-connected.

[0009] In an optional embodiment, there are multiple sliding bearings, and the multiple sliding bearings are installed between the rotary shell and the worm gear. The multiple sliding bearings are arranged at intervals in the extension direction of the axis of the worm gear.

[0010] Based on the above solution, the cooperation of multiple sliding bearings can increase the contact area with the worm wheel and the rotating shell, and can provide multi-point support for the worm wheel in the axial direction of the worm wheel, making the worm wheel and the rotating shell more stable during relative rotation.

[0011] In an optional embodiment, the worm wheel includes a connected optical axis section and a meshing axis section, the meshing axis section is provided with a tooth portion meshing with the worm, and the inner ring of the sliding bearing is sleeved on the outside of the optical axis section.

[0012] Based on the above solution, the sliding bearing is installed on the optical shaft section, which is more convenient to install, and the sliding bearing is independent of the meshing shaft section, and the assembly of the sliding bearing is not easy to affect the meshing of the worm and the meshing shaft section. At the same time, one side of the sliding bearing can abut against the side of the meshing shaft section, and the meshing shaft section provides a limit for the sliding bearing.

[0013] In an optional embodiment, the rotating shell includes a main shell, a transparent cover, a first connecting shell and a second connecting shell, the transparent cover is connected to the main shell, and the worm gear is rotatably engaged with the main shell or the transparent cover through the sliding bearing; the first connecting shell and the second connecting shell are both fixedly connected to the main shell, and the first connecting shell of one of the two adjacent rotating shells is transmission-connected to the second connecting shell of the other rotating shell.

[0014] Based on the above solution, the structure of the rotary shell is simple. During assembly, the worm gear is assembled to the main shell and then the opening of the main shell is closed with a transparent cover, which makes assembly simple.

[0015] In an optional embodiment, the drive unit also includes a transmission tube, and the first connecting shell of one of the two adjacent rotating shells and the second connecting shell of the other rotating shell are both plugged into the transmission tube, and the first connecting shell and the second connecting shell are both relatively fixed to the transmission tube in the circumferential direction of the transmission tube, so that the first connecting shell and the second connecting shell rotate synchronously.

[0016] Based on the above scheme, the transmission connection between the first connection housing and the second connection housing is realized by plugging and matching the transmission pipe with the first connection housing and the second connection housing, which has a simple structure, a simple installation method, high assembly quality and high assembly efficiency. Before assembly, the transmission pipe can be removed from the first connection housing and the second connection housing, which is convenient for transportation.

[0017] In an optional embodiment, one of the first connecting shell and the second connecting shell is integrally formed with the main shell, and the other of the first connecting shell and the second connecting shell is fixedly connected to the main shell by fasteners.

[0018] Based on the above solution, the molding methods of the main shell, the first connecting shell and the second connecting shell are simple and reliable, which can ensure the overall structural strength of the rotating shell. The rotating shell is not easily damaged and can stably transmit torque.

[0019] In an optional embodiment, the worm gear is clamped between the main housing and the second connecting housing.

[0020] Based on the above solution, the position of the worm gear is firm and the rotation is stable.

[0021] In an optional embodiment, the active drive mechanism further includes a foot, the foot is fixedly connected to the worm gear, and the foot is used to be fixed to the ground.

[0022] Based on the above solution, after the anchor is fixed to the ground, the worm wheel is also fixed relative to the ground, that is, the worm wheel will not rotate. When the worm rotates under the action of external force, the worm can drive the rotating shell to rotate around the axis of the worm wheel, thereby adjusting the angle.

[0023] In an optional embodiment, the photovoltaic driver further includes a motor, wherein the motor is connected to one of the plurality of worms to drive the corresponding worm to rotate.

[0024] Based on the above solution, after the motor is started, the torque is transmitted to the worm, thereby driving the worm to rotate. The motor control is more convenient and flexible and has a wide range of adaptability.

[0025] In an optional embodiment, the driven drive mechanism includes a housing, a first bevel gear, a second bevel gear and a driven shaft, the first bevel gear and the second bevel gear are meshed and rotatably matched with the housing, the worm is fixedly connected to the first bevel gear, and the driven shaft is fixedly connected to the second bevel gear; the driven shafts of adjacent driven drive mechanisms are transmission connected.

[0026] Based on the above scheme, the worm rotates to drive the first bevel gear to rotate, thereby driving the second bevel gear to rotate, and then driving the driven shaft to rotate, and the driven shafts of adjacent driven drive mechanisms are connected, so that the driven shaft connected to the worm gear connected to the active drive mechanism can transmit the torque to the driven shafts of the remaining driven drive mechanisms, thereby achieving the synchronous movement of multiple driven drive mechanisms. Thereby, multiple photovoltaic panels matched with the driven shafts can be driven to rotate synchronously, and the angles of multiple photovoltaic panels can be adjusted synchronously.

[0027] The beneficial effects of the embodiments of the utility model are:

[0028] In summary, in the photovoltaic driver provided by this embodiment, the worm wheel is rotatably connected to the rotating shell by means of a sliding bearing, that is, the sliding bearing plays a role in supporting and positioning the worm wheel, and the sliding bearing and the rotating shell as well as the sliding bearing and the worm wheel can be set to be in surface contact, with a large contact area, and can bear a larger axial force and radial force, so that the worm wheel and the rotating shell have high stability when they rotate relative to each other. And the sliding bearing can be directly sleeved on the outside of the worm wheel and embedded in the rotating shell, which is simple to assemble, with high assembly quality and high assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 A schematic diagram of the structure of a photovoltaic driver according to an embodiment of the utility model;

[0031] Figure 2 This is a schematic diagram of the structure of a driving unit according to an embodiment of the utility model;

[0032] Figure 3 It is an axonometric cross-sectional view of a drive unit according to an embodiment of the utility model;

[0033] Figure 4 It is a cross-sectional view along the AA direction of an embodiment of the utility model;

[0034] Figure 5 It is a cross-sectional view along the BB direction of an embodiment of the utility model;

[0035] Figure 6 It is a cross-sectional view along the CC direction of an embodiment of the present utility model.

[0036] icon:

[0037] 100-driving unit; 110-rotating housing; 111-worm gear; 112-worm; 113-foot; 114-sliding bearing; 115-main housing; 116-transparent cover; 117-skeleton oil seal; 118-first connecting housing; 119-second connecting housing; 120-first optical axis section; 121-engaging shaft section; 122-second optical axis section; 123-housing; 124-first bevel gear; 125-second bevel gear; 126-driven shaft; 127-support bearing; 200-first transmission pipe; 300-second transmission pipe; 400-third transmission pipe; 500-fourth transmission pipe; 600-motor. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0041] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0042] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0043] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In the prior art, the outer circumference of the worm wheel 111 is provided with a first raceway, and the inner circumference of the housing is provided with a second raceway. The first raceway and the second raceway cooperate to define a circular track, and a spherical rolling body is placed in the track. The spherical rolling body is relied on to realize the rotatable cooperation between the worm wheel 111 and the housing. The cooperation accuracy of the first raceway and the second raceway needs to be ensured to ensure that the rolling body slides smoothly in the track. In this way, the rolling body assembly structure is complex, the assembly is inconvenient, and it is easy to be misaligned, resulting in poor stability when the worm wheel 111 and the housing rotate relative to each other.

[0045] In view of this, the designer provides a photovoltaic driver, which can simplify the structure, reduce the difficulty of assembly, improve the assembly efficiency and quality, and improve the stability and reliability of operation.

[0046] Please combine Figure 1-Figure 6 In this embodiment, the photovoltaic driver includes a plurality of drive units 100 arranged side by side, and each drive unit 100 includes an active drive mechanism and a passive drive mechanism. The active drive mechanism includes a rotary shell 110, a worm wheel 111, a sliding bearing 114, and a worm 112. The worm wheel 111 is rotatably matched with the rotary shell 110 through the sliding bearing 114. The worm 112 is mounted on the rotary shell 110 and meshes with the worm wheel 111. The worm 112 and the rotary shell 110 are relatively fixed in the circumferential direction of the worm wheel 111. The worm 112 is connected to the passive drive mechanism in a transmission connection. The rotary shells 110 of the active drive mechanisms of adjacent drive units 100 are fixedly connected, and the passive drive mechanisms of adjacent drive units 100 are connected in a transmission connection.

[0047] Based on the above, the working principle of the photovoltaic driver provided in this embodiment is as follows:

[0048] During installation, the worm gear 111 is supported and fixed on the ground, and the motor 600 is connected to the active drive mechanism of one group of drive units 100 in the multiple groups of drive units 100. Specifically, the motor 600 is connected to the corresponding worm 112. The photovoltaic panel is connected to the driven drive mechanism. After the assembly is completed, the motor 600 is started, and the motor 600 drives the worm 112 to rotate. Since the worm 112 is meshed with the worm wheel 111 and the worm wheel 111 is relatively fixed, the worm 112 and the rotating shell 110 rotate together around the axis of the worm wheel 111, and drive the driven drive mechanism to rotate around the axis of the worm wheel 111, and the photovoltaic panel installed on the driven drive mechanism rotates together, so as to adjust the angle of the photovoltaic panel. Since the worm wheel 111 is supported and fixed on the rotary shell 110 by the sliding bearing 114, the sliding bearing 114 and the rotary shell 110 as well as the sliding bearing 114 and the worm wheel 111 can be arranged to be in surface contact, with a large contact area, and can bear a larger axial force and radial force, so that the worm wheel 111 and the rotary shell 110 have higher stability during the relative rotation. Moreover, the sliding bearing 114 can be directly sleeved on the outside of the worm wheel 111 and embedded in the rotary shell 110, which is simple to assemble, with high assembly quality and high assembly efficiency.

[0049] The following embodiments illustrate the details of the photovoltaic driver provided in this application by way of examples.

[0050] It should be noted that the number of the driving units 100 is set as required, and in this embodiment, the structure is shown with three driving units 100 .

[0051] Please combine Figure 1 In this embodiment, the photovoltaic driver includes three groups of parallel driving units 100 , a first transmission tube 200 , a second transmission tube 300 , a third transmission tube 400 and a fourth transmission tube 500 .

[0052] Please combine Figure 2-Figure 6Each set of drive units 100 includes an active drive mechanism and a driven drive mechanism. The active drive mechanism includes a rotary shell 110, a worm wheel 111, a worm 112, a foot 113 and two sliding bearings 114. The worm wheel 111 is rotatably matched with the rotary shell 110 through the two sliding bearings 114. The foot 113 can be fixed on the worm wheel 111 by bolts and other structural parts. The foot 113 is used to be fixed on the ground. The worm 112 is installed on the rotary shell 110 and meshes with the worm wheel 111. The worm 112 and the rotary shell 110 are relatively fixed in the circumferential direction of the worm wheel 111. The worm 112 is transmission-connected to the driven drive mechanism. The rotating shell 110 of the left driving unit 100 and the rotating shell 110 of the middle driving unit 100 are connected through the first transmission tube 200, the rotating shell 110 of the right driving unit 100 and the rotating shell 110 of the middle driving unit 100 are connected through the second transmission tube 300, the driven driving mechanism of the left driving unit 100 and the driven driving mechanism of the middle driving unit 100 are connected through the third transmission tube 400, and the driven driving mechanism of the right driving unit 100 and the driven driving mechanism of the middle driving unit 100 are connected through the fourth transmission tube 500. The motor 600 is installed on the worm 112 of the middle driving unit 100, that is, the output shaft of the motor 600 is connected to the worm 112 through a pin or other connecting piece. After the motor 600 is started, it drives the worm 112 to rotate.

[0053] It should be understood that after the foot 113 is fixed to the ground, the worm wheel 111 is also fixed relative to the ground, that is, the worm wheel 111 does not rotate. When the worm 112 rotates under the action of external force, the worm 112 can drive the rotary shell 110 to rotate around the axis of the worm wheel 111.

[0054] Optionally, the rotary shell 110 includes a main shell 115, a transparent cover 116, a skeleton oil seal 117, a first connection shell 118, and a second connection shell 119. One side of the main shell 115 has an opening, the transparent cover 116 is connected to the main shell 115 and closes the opening, and the skeleton oil seal 117 is arranged at the opening and clamped between the main shell 115 and the transparent cover 116 to play a sealing role. The first connection shell 118 and the second connection shell 119 are both fixedly connected to the main shell 115, and the first connection shell 118 of one of the two adjacent rotary shells 110 is transmission-connected to the second connection shell 119 of the other rotary shell 110 through the first transmission pipe 200 or the second transmission pipe 300. The first transmission tube 200 and the second transmission tube 300 can both be square tubes. The first transmission tube 200 and the corresponding first connecting shell 118 and the second connecting shell 119 can be plugged together. The second transmission tube 300 and the corresponding first connecting shell 118 and the second connecting shell 119 can be plugged together. The connection method is simple and reliable, and it is easy to assemble and disassemble.

[0055] It should be understood that one of the first connection shell 118 and the second connection shell 119 is integrally formed with the main shell 115, and the other of the first connection shell 118 and the second connection shell 119 is fixedly connected to the main shell 115 by fasteners. The fasteners may be bolts or the like. The molding method of the main shell 115, the first connection shell 118 and the second connection shell 119 is simple and reliable, and can ensure the overall structural strength of the rotary shell 110. The rotary shell 110 is not easily damaged and can stably transmit torque. For example, in this embodiment, the first connection shell 118 is integrally formed with the main shell 115, and the second connection shell 119 is fixedly connected to the main shell 115 by a plurality of bolts.

[0056] In addition, a portion of the second connecting housing 119 is inserted into the main housing 115 , and a cavity for accommodating the worm gear 111 is formed between the main housing 115 and the second connecting housing 119 .

[0057] Please combine Figure 6 Optionally, the worm wheel 111 includes a first optical axis segment 120, a meshing axis segment 121, and a second optical axis segment 122 connected in sequence. The first optical axis segment 120, the meshing axis segment 121, and the second optical axis segment 122 are coaxially arranged and integrally formed. The worm wheel 111 has high structural strength and is easy to process and manufacture. The outer peripheral surface of the meshing axis segment 121 is provided with a tooth portion, and the tooth portion is an incomplete gear structure, that is, the multiple teeth on the outer peripheral surface of the meshing axis segment 121 are not distributed in one circle of the meshing axis segment 121. For example, the multiple teeth are distributed within a 180° range of the outer peripheral surface of the meshing axis segment 121, which can limit the rotation angle range of the worm 112. The worm 112 meshes with the tooth portion on the meshing axis segment 121. In order to further improve the precise control of the rotation range, an angle limit block can be set on the worm wheel 111, and the worm 112 can abut against the angle limit block during the rotation process, thereby limiting the rotation of the worm 112. During assembly, the inner rings of the two sliding bearings 114 are respectively sleeved on the outside of the first optical axis segment 120 and the second optical axis segment 122, and one side of the inner ring abuts against the side of the meshing tooth portion, which plays a role in limiting the position of the sliding bearing 114. The outer ring of one of the two sliding bearings 114 is embedded in the main housing 115, and the outer ring of the other of the two sliding bearings 114 is embedded in the transparent cover 116. In this way, the worm wheel 111 is rotatably matched with the main housing 115 and the transparent cover 116 through the two sliding bearings 114, and the worm wheel 111 is subjected to more balanced force and rotates more stably.

[0058] It should be understood that in other embodiments, the number of sliding bearings 114 is not limited to two, and the number of sliding bearings 114 can be multiple and set as needed. When the number of sliding bearings 114 is multiple, the multiple sliding bearings 114 are arranged at intervals in the extension direction of the axis of the worm wheel 111. The cooperation of multiple sliding bearings 114 can increase the contact area with the worm wheel 111 and the rotary shell 110, and can provide multi-point support for the worm wheel 111 in the axial direction of the worm wheel 111, so that the worm wheel 111 and the rotary shell 110 are more stable during the relative rotation.

[0059] It should be noted that the worm gear 111 is assembled in the cavity formed by the main housing 115 and the second connecting housing 119 , that is, the worm gear 111 is clamped between the main housing 115 and the second connecting housing 119 , and the position of the worm gear 111 is more stable and reliable.

[0060] Optionally, the worm 112 can be rotatably matched with the main housing 115 of the rotary shell 110 through a tapered roller bearing and a ball bearing, so that the worm 112 can rotate more flexibly and with high stability.

[0061] Please combine Figure 4 In this embodiment, optionally, the driven drive mechanism includes a housing 123, a first bevel gear 124, a second bevel gear 125, a driven shaft 126 and two support bearings 127. The housing 123 can be integrally formed with the main housing 115 of the rotary shell 110, and the overall structural strength is high and the consistency of movement is higher. The first bevel gear 124 and the second bevel gear 125 are meshed and both are rotatably matched with the housing 123, and the axes of the first bevel gear 124 and the second bevel gear 125 are perpendicular. The first bevel gear 124 is sleeved and fixed outside the worm 112, and the driven shaft 126 is fixedly connected to the second bevel gear 125, and the driven shaft 126 passes through the housing 123, and the driven shaft 126 is rotatably matched with the housing 123 through two support bearings 127. The support bearing 127 can be, but is not limited to, a tapered roller bearing. The driven shafts 126 of adjacent driven drive mechanisms are connected by transmission through the third transmission tube 400 or the fourth transmission tube 500, so that the torque of the adjacent driven shafts 126 can be transmitted by the third transmission tube 400 and the fourth transmission tube 500. For example, the driven shaft 126 is inserted into the third transmission tube 400 or the fourth transmission tube 500 and locked by fasteners such as screws.

[0062] It should be noted that the bracket of the photovoltaic panel can be installed on the third transmission tube 400 and the fourth transmission tube 500 .

[0063] In addition, the speed ratio of the bevel gear pair composed of the first bevel gear 124 and the second bevel gear 125 is set as needed. For example, in this embodiment, the speed ratio can be set to 1:1, which can ensure the unity of the active drive mechanism and the driven drive mechanism and the stability of transmission.

[0064] In the photovoltaic driver provided in this embodiment, after the motor 600 is started, the worm 112 rotates. Since the worm wheel 111 is fixed to the ground through the foot 113, the worm 112 rotates around the axis of the worm wheel 111 within a set angle range, and drives the rotating shell 110 and the driven driving mechanism to rotate together. A sliding bearing 114 is provided between the rotating shell 110 and the worm wheel 111. The sliding bearing 114 can bear greater axial force and radial force, has good support effect, and is stable, so that the rotating shell 110 is stable and reliable when rotating relative to the worm wheel 111, and the entire system operates stably and reliably.

[0065] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A photovoltaic driver, characterized in that: include: A plurality of drive units (100) are arranged side by side, each of the drive units (100) comprising an active drive mechanism and a driven drive mechanism, the active drive mechanism comprising a rotary shell (110), a worm wheel (111), a sliding bearing (114) and a worm (112), the worm wheel (111) being rotatably matched with the rotary shell (110) via the sliding bearing (114), the worm (112) being mounted on the rotary shell (110) and meshing with the worm wheel (111), the worm (112) and the rotary shell (110) being relatively fixed in the circumferential direction of the worm wheel (111); the worm (112) being transmission-connected to the driven drive mechanism; the rotary shells (110) of the active drive mechanisms of adjacent drive units (100) are fixedly connected, and the driven drive mechanisms of adjacent drive units (100) are transmission-connected.

2. The photovoltaic driver according to claim 1, characterized in that: There are a plurality of sliding bearings (114), and the plurality of sliding bearings (114) are installed between the rotary shell (110) and the worm gear (111). The plurality of sliding bearings (114) are arranged at intervals in the extension direction of the axis of the worm gear (111).

3. The photovoltaic driver according to claim 1, characterized in that: The worm wheel (111) comprises a connected optical axis section and a meshing axis section (121); the meshing axis section (121) is provided with a tooth portion meshing with the worm (112); and the inner ring of the sliding bearing (114) is sleeved outside the optical axis section.

4. The photovoltaic driver according to claim 1, characterized in that: The rotary shell (110) comprises a main shell (115), a transparent cover (116), a first connecting shell (118) and a second connecting shell (119); the transparent cover (116) is connected to the main shell (115); the worm gear (111) is rotatably matched with the main shell (115) or the transparent cover (116) through the sliding bearing (114); the first connecting shell (118) and the second connecting shell (119) are both fixedly connected to the main shell (115); the first connecting shell (118) of one of the two adjacent rotary shells (110) is drivingly connected to the second connecting shell (119) of the other rotary shell (110).

5. The photovoltaic driver according to claim 4, characterized in that: The drive unit (100) further comprises a transmission tube, wherein a first connecting shell (118) of one rotating shell (110) of two adjacent rotating shells (110) and a second connecting shell (119) of the other rotating shell (110) are both plug-fitted to the transmission tube, and the first connecting shell (118) and the second connecting shell (119) are both relatively fixed to the transmission tube in the circumferential direction of the transmission tube, so that the first connecting shell (118) and the second connecting shell (119) rotate synchronously.

6. The photovoltaic driver according to claim 4, characterized in that: One of the first connecting shell (118) and the second connecting shell (119) is integrally formed with the main shell (115), and the other of the first connecting shell (118) and the second connecting shell (119) is fixedly connected to the main shell (115) by fasteners.

7. The photovoltaic driver according to claim 4, characterized in that: The worm gear (111) is clamped between the main housing (115) and the second connecting housing (119).

8. The photovoltaic driver according to claim 1, characterized in that: The active drive mechanism further comprises a foot (113), wherein the foot (113) is fixedly connected to the worm gear (111), and the foot (113) is used for being fixed to the ground.

9. The photovoltaic driver according to claim 1, characterized in that: The photovoltaic driver further comprises a motor (600), wherein the motor (600) is connected to a worm (112) among the plurality of worms (112) and is used for driving the corresponding worm (112) to rotate.

10. The photovoltaic driver according to claim 1, characterized in that: The driven drive mechanism comprises a housing (123), a first bevel gear (124), a second bevel gear (125) and a driven shaft (126); the first bevel gear (124) and the second bevel gear (125) are meshed and rotatably matched with the housing (123); the worm (112) is fixedly connected to the first bevel gear (124); the driven shaft (126) is fixedly connected to the second bevel gear (125); and the driven shafts (126) of adjacent driven drive mechanisms are transmission-connected.

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