CN215300565U

CN215300565U - Multi-point drive photovoltaic tracking support

Info

Publication number: CN215300565U
Application number: CN202121843138.XU
Authority: CN
Inventors: 宁鹏; 彭程; 钱鸿杰; 孙四春; 卢晓聪; 高习玮
Original assignee: Suzhou Jsolar Inc
Current assignee: Suzhou Jsolar Inc
Priority date: 2021-08-09
Filing date: 2021-08-09
Publication date: 2021-12-24
Anticipated expiration: 2031-08-09

Abstract

The utility model relates to a support is trailed to multiple spot drive photovoltaic, it includes the support main part, power device, a plurality ofly be connected with the support bulk phase and realize the drive unit of photovoltaic tracking action and series power device and drive unit with the drive support main part and be used for transmitting the power of power unit output for drive unit's transmission, the support main part includes a plurality of stands, the main shaft of installing on each stand rotates, drive unit includes the swing arm of being connected with the main shaft is perpendicular, install on the stand and the speed reducer that the input is connected with drive unit, connect in the capstan winch of speed reducer output, cooperate with the capstan winch and be connected with the swing arm in order to make main shaft pivoted rope through the pulling swing arm, set up the straining device who is used for tensioning rope on the stand. The utility model discloses can realize having reduced actuating mechanism's installation accuracy simultaneously to the synchro control of main shaft multiple spot, be favorable to adapting to the installation requirement of complicated topography, it is with low costs, the economic nature is stronger.

Description

Multi-point drive photovoltaic tracking support

Technical Field

The utility model relates to a photovoltaic power generation equipment field, concretely relates to support is trailed to multiple spot driven photovoltaic.

Background

The structural style of the existing single-row flat single-shaft photovoltaic tracking support mainly has the following two types:

firstly, a structural form that a set of middle-placed rotary speed reducing motor and dampers at two ends are added is adopted: output shafts at two ends of a rotary speed reducing motor positioned in the center of the support main shaft are respectively connected with the two sections of main shafts, purlins for mounting photovoltaic modules are arranged on the main shafts, the whole section of main shafts are erected in bearings of seats at the top ends of the multiple stand columns, and the two sections of main shafts can freely rotate under the driving of the middle speed reducing motor, so that the photovoltaic modules on the main shafts can track the angle of the sun; and dampers for buffering and absorbing vibration in a strong wind environment are arranged on two sides of the support. The scheme belongs to a single-point driving mode, the problem of uneven stress distribution is obvious, and the main shaft which is farther away from a driving unit has smaller driving force and poorer structural stability; the structural form can not meet the requirements of high load, long arrangement, multiple components and large span; meanwhile, the single-point driving structure has poor overall stability, high cost and weak adaptability;

secondly, adopt one set of gear motor to add the structural style of many push rods: gear motor's output shaft passes through the universal joint and links to each other with the multistage torque tube, transmit the push rod input shaft department of its rotary motion to each drive unit department, and produce same rotary motion and transmit the push rod department to other drive unit departments through the effect of push rod opposite side torque tube and universal joint through the output shaft of push rod opposite side, thereby realize driving many push rod synchronous motion simultaneously with a motor, the output shaft of push rod passes through the round pin axle cooperation with main epaxial swing arm, thereby realize many push rods and promote the swing arm simultaneously, the fixed axis rotation takes place around the main shaft in the stand top bearing frame for the drive main shaft. The scheme belongs to a multipoint driving mode, and the design can realize that one motor is adopted to synchronously drive a plurality of push rods, so that the push rods can be pushed at a plurality of positions of the long main shaft at the same time. The structural form has higher cost and poorer adaptability to complex terrains.

Disclosure of Invention

The utility model aims at providing a strong adaptability, stability are good, with low costs, are applicable to long the multiple spot drive photovoltaic tracking support of arranging, big span installation demand.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

a multi-point drive photovoltaic tracking support comprises a support main body, a power device, a plurality of drive units and a transmission device, wherein the drive units are connected with the support main body to drive the support main body to realize photovoltaic tracking action, the transmission device is connected with the power device and the drive units in series and is used for transmitting power output by the power unit to the drive units, the support main body comprises a plurality of stand columns and a main shaft rotatably mounted on each stand column, the driving unit comprises a swing arm vertically connected with the main shaft, a speed reducer mounted on the stand columns, an input end of the speed reducer being connected with the driving unit, a winch connected to an output end of the speed reducer, a rope matched with the winch and connected with the swing arm to enable the main shaft to rotate by pulling the swing arm, and a tensioning mechanism arranged on the stand columns and used for tensioning the rope.

The cable comprises a first cable and a second cable, a first end of the first cable and a second end of the second cable are respectively fixed on the winch, and a second end of the first cable and a second end of the second cable are respectively connected with two ends of the swing arm.

The winch is provided with two pressing blocks which are respectively connected with the first end of the first rope and the first end of the second rope, and the pressing blocks are installed on the winch through fasteners.

The stand is fixedly provided with a mounting seat, and the speed reducer is arranged on the mounting seat.

The swing arm comprises a first swing arm and a second swing arm, and the first swing arm and the second swing arm are respectively and vertically connected to two axial sides of the spindle.

The first swing arm and the second swing arm are connected with the main shaft through a first flange and a second flange respectively.

The outer end of the swing arm is provided with a lifting lug, and the rope is connected with the lifting lug.

The tensioning mechanism comprises a support fixedly connected with the stand column, an installation rod arranged on the support, two tension springs with one ends connected with the installation rod and symmetrically arranged on two sides of the installation rod, and two pulleys arranged at the other ends of the tension springs respectively, wherein the rope is matched with the pulleys.

The transmission includes a plurality of torque tubes; the power device comprises a motor arranged on the upright post and a reduction box connected with the motor; the torque tube is respectively connected with the speed reducer and the reduction gearbox through universal joints.

The upright post is provided with a support, the reduction gearbox is mounted on the support, and the motor is connected to an input shaft of the reduction gearbox.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages: the utility model can realize the synchronous control of the main shaft multiple points, and is beneficial to meeting the scheme requirements of long arrangement and large span of the photovoltaic modules; meanwhile, due to the adoption of the driving design of the flexible rope, the mounting precision of the driving mechanism is reduced, and the mounting requirement of complex terrains is favorably met; moreover, the driving of the cable and the winch is lower in cost and stronger in economical efficiency compared with the push rod and the speed reducer.

Drawings

Figure 1 is the utility model discloses a whole schematic diagram of support is trailed to multiple spot drive photovoltaic.

Figure 2 is the utility model discloses an enlarged schematic diagram of power device department in multiple spot drive photovoltaic tracking support.

Figure 3 is the utility model discloses an enlarged schematic diagram of drive unit department in multiple spot drive photovoltaic tracking support.

Figure 4 is the utility model discloses a drive unit's in multiple spot drive photovoltaic tracking support schematic diagram of speed reducer.

Figure 5 is the utility model discloses a drive unit's in multiple spot drive photovoltaic tracking support speed reducer and the schematic diagram of capstan winch.

In the above drawings: 1. a stent body; 2. a power plant; 3. a drive unit; 4. a transmission device; 5. a column; 6. a main shaft; 7. a bearing seat; 8. a bearing; 9. a purlin; 10. a photovoltaic module; 11. a motor; 12. a reduction gearbox; 13. a support; 14. a torque tube; 15. a universal joint; 16. a speed reducer; 17. a winch; 18. a first swing arm; 19. a second swing arm; 20. a first flange; 21. a second flange; 22. a first cable; 23. a second rope; 24. a first torque tube connecting shaft; 25. a second torque tube connecting shaft; 26. a winch connecting shaft; 27. lifting lugs; 28. briquetting; 29. a support; 30. mounting a rod; 31. a tension spring; 32. a pulley.

Detailed Description

The invention will be further described with reference to examples of embodiments shown in the drawings.

The first embodiment is as follows: as shown in fig. 1, a multi-point driving photovoltaic tracking support comprises a support body 1, a power device 2, a plurality of driving units 3 and a transmission device 4.

The support body 1 comprises a plurality of upright posts 5 fixedly arranged on the ground and main shafts 6 rotatably arranged on the upright posts 5. Specifically, the lower ends of a plurality of columns 5 are vertically inserted into the ground or fixed with a concrete pile foundation in a welding or fastening mode according to the design span, and the top ends of the columns 5 are ensured to be on the same horizontal plane. The upper end of each upright post 5 is respectively provided with a bearing seat 9 through a fastener, a bearing 8 matched with the bearing seat 9 is arranged in the bearing seat 9, and the bearing 8 can do circular motion around the central line in the bearing seat 9. The main shaft 6 is mounted on top of each upright 5 by means of bearings 8, thus enabling its rotational mounting. A plurality of purlins 10 perpendicular to the main shaft 6 are arranged on the main shaft 6 at equal intervals, the purlins 10 are connected with the main shaft 6 through purlin 10 connecting pieces, and the purlins 10 are used for fixing photovoltaic modules. The purline 10 and the purline 10 connecting piece are tightly held and fixed with the main shaft 6 through fasteners.

The power device 2 is provided with a set of power devices, and the power devices output power so that the main shaft 6 can rotate to drive the photovoltaic module to realize photovoltaic tracking action. As shown in fig. 2, the power device 2 includes a motor 11 disposed on the upright post 5, and a reduction box 12 connected to the motor 11 (the motor 11 and the reduction box 12 of the power device 2 may also be collectively referred to as a reduction motor). The power unit 2 is usually arranged at a column 5 in the center of the stand body 1. A support 13 is arranged on the upright post 5, the support 13 is arranged on the upright post 5 through a fastener, a reduction box 12 is arranged on the support 13 through the fastener, the motor 11 is connected to an input shaft of the reduction box 12, and an output shaft of the reduction box 12 forms an output shaft of the power device 2. The reduction box 12 has two output shafts respectively located at both sides thereof, and when the motor 11 operates, the two output shafts at both sides of the reduction box 12 generate a constant-speed, same-direction, coaxial-line rotational motion. The whole system only adopts one motor 11 and one speed reducer 16 to drive the whole row of support main bodies 1, and multipoint driving is achieved.

The transmission 4 is connected in series with the power unit 2 and the drive unit 3, and serves to transmit power output from the power unit to the drive unit 3. The transmission device 4 comprises a plurality of torque tubes 14, and at the power device 2, the torque tubes 14 are respectively connected with two output shafts of the reduction box 12 through universal joints 15, so that the rotation is realized under the driving of the speed reducer 16. At the drive unit 3, the torque tube 14 is also connected to the power input shaft in the drive unit 3 via a universal joint 15, so that rotation is transmitted to the drive unit 3. The adjacent drive units 3 are also connected in series through universal joints 15 and torque tubes 14, so that the power output by the power device 2 is transmitted to each drive unit 3 in turn.

The number of the driving units 3 is set to be a plurality of, and the driving units 3 are connected with the support main body 1, so that the support main body 1 can be driven to realize photovoltaic tracking action during working. The number of the drive units 3 is usually set to 2n, n ≧ 1 and an integer. The drive units 3 are divided into two groups, the number of one group of drive units 3 is odd, the number of the other group of drive units 3 is even, and the two groups of drive units 3 are respectively arranged at two sides of the power device 2, namely the drive units 3 numbered 1, 3, … and 2n-1 are arranged at one side of the power device 2, and the drive units 3 numbered 2, 4, … and 2n are arranged at the other side of the power device 2. Each drive unit 3 can be synchronized based on the power unit 2 and the transmission 4, jointly driving the main shaft 6 in a rotational movement about the N-S axis.

As shown in fig. 3, each drive unit 3 includes a swing arm, a speed reducer 16, a winch 17, a rope, and a tension mechanism. The speed reducer 16 is attached to the column 5, and a mount base may be fixed to the column 5, and the speed reducer 16 may be attached to the mount base. The input shaft of the reducer 16 is the power input shaft of the driving unit 3, and is connected with the torque tube 14 on the side close to the power device 2 through the universal joint 15, so as to realize power input. As shown in fig. 4, two output shafts of the speed reducer 16 are provided, one output shaft is coaxial with the input shaft thereof, and the two output shafts are respectively located on both sides of the speed reducer 16 and rotate synchronously, so that the output shafts can transmit the power of the power device 2 to the next driving unit 3, and the other output shaft of the speed reducer 16 is connected with the input shaft thereof through an internal speed reduction transmission structure (including a bevel gear, a worm gear, and the like), so as to output a reduced rotation motion. Thus, the reducer 16 is provided with three shafts, a first torque tube connecting shaft 24, a second torque tube connecting shaft 25 and a winch connecting shaft 26, wherein the first torque tube connecting shaft 24 and the second torque tube connecting shaft 25 have the characteristics of coaxial line, constant speed, same direction and the like. The first torque tube connecting shaft 24/second torque tube connecting shaft 25 constitutes the input shaft of the speed reducer 16, and the second torque tube connecting shaft 25/first torque tube connecting shaft 24 and winch connecting shaft 26 constitute the output shaft of the speed reducer 16. The winch 17 is mounted on the output end of the reduction gear 16, i.e. the winch 17 is fixedly mounted on a winch connecting shaft 26 of the reduction gear 16 so as to be drivable in rotation by the reduction gear 16. The winch 17 is provided with a helical track. The swing arm is perpendicularly connected with the main shaft 6, the main shaft 6 is located in the middle of the swing arm, and lifting lugs 27 are arranged at the outer end of the swing arm (namely the two ends of the swing arm, far away from the main shaft 6). In this embodiment, the swing arm includes a first swing arm 18 and a second swing arm 19, and the first swing arm 18 and the second swing arm 19 are respectively vertically connected to two axial sides of the spindle 6, and are coaxially disposed. The inner ends of the first swing arm 18 and the second swing arm 19 are respectively connected with the main shaft 6 through a first flange 20 and a second flange 21, and the outer end of the first swing arm 18 and the outer end of the second swing arm 19 form the outer end of the whole swing arm. When the swing arm rotates, the main shaft 6 can be driven to rotate. The cable is engaged with the winch 17 and connected with the lifting lug 27 at the outer end of the swing arm, so that the main shaft 6 is rotated by pulling the swing arm. The cable can be a steel wire rope. In this embodiment, the cable includes a first cable 22 and a second cable 23 with equal length, a first end of the first cable 22 and a second end of the second cable 23 are respectively fixed on the winch 17, and a second end of the first cable 22 and a second end of the second cable 23 are respectively connected with two ends of the swing arm. Specifically, the winch 17 is provided with two pressing blocks 28 respectively connected to the first end of the first cable 22 and the first end of the second cable 23, and the pressing blocks 28 are mounted on the winch 17 through fasteners. The first and

second cables

22 and 23 are fixed on the winch 17, and then wound on the winch 17 for several turns, and then connected to the lifting lugs 27 at the outer ends of the swing arms. In some cases, only one cable may be provided, and both ends of the cable are respectively connected with the lifting lugs 27 at both ends of the swing arm and bypass the winch 17. The tensioning mechanism for tensioning the cables is arranged on the upright post 5 and comprises a support 29, an installation rod 30, two tension springs 31 and two pulleys 32, the support 29 is fixedly connected with the upright post 5, the installation rod 30 is arranged on the support 29, one ends of the two tension springs 31 are connected with the installation rod 30, the two tension springs 31 are symmetrically arranged on two sides of the installation rod 30 and correspond to the two cables, and the two pulleys 32 are respectively arranged at the other ends of the two tension springs 31. The cable is tensioned in cooperation with the pulley 32.

The working principle of the scheme is as follows: the motor 11 is started, the rotational power is output through the reduction gearbox 12, the rotational power is transmitted to each driving unit 3 through each torque tube 14 of the transmission device 4, then in the driving unit 3, the speed reducer 16 operates, the winch 17 drives the rope to move, two sections of first ropes 22 and second ropes 23 which are equal in length on the winch 17 are respectively 'tightened up' and 'loosened' in equal length, finally, the stretching action of the swing arm is realized, and then the main shaft 6 is driven to rotate, and the multipoint synchronous driving of the whole row of photovoltaic supports 29 is realized. In the above process, the rotation of the capstan 17 of each driving unit 3 has the same characteristics of coaxiality, constant speed and same direction. Since the cable may loosen after a period of use, a tensioning mechanism is provided to perform the tensioning function.

In summary, the invention provides a multipoint driving photovoltaic tracking support adopting a single speed reducing motor, a torque tube 14, a winch 17, a speed reducer 16 and a rope, the design generates rotary motion through the speed reducing motor, the rotary motion is transmitted to the torque tube 14 through a universal joint 15, the torque tube 14 synchronously transmits the rotary motion to the winch 17 of each point speed reducer 16, so that the rotation of the winch 17 at each driving position is indirectly realized, two sections of rope with equal length are arranged on the winch 17, one end of each section of rope is rigidly fixed with the winch 17 through a pressing block 28, the other end of each section of rope is fixed with a swing arm on a main shaft 6 after being spirally wound for a plurality of circles, the rotation of the winch 17 realizes the traction of the swing arm, and finally, the multipoint synchronous rotation of the main shaft 6 of the whole column of photovoltaic supports 29 is realized.

The key points of the scheme are as follows:

1. the rotation motion of the single-point speed reduction motor is transmitted to different driving units 3 far away from the single-row support 29 by the matching of the speed reduction motor, the torque tube 14, the universal joint 15 and the speed reducer 16, the same rotation motion is realized at each driving position, and the synchronous traction and driving of the winch 17 and the cable to the swing arm can be realized;

2. in each driving unit 3, the speed reducer 16 enables an input shaft to be coaxial with one output shaft, has the characteristics of constant speed and same direction, transmits the rotary motion to the other output shaft through a bevel gear and a straight gear set, reduces the speed and amplifies the torque;

3. as the traction mechanism is mainly a flexible rope, the requirement on the installation precision of the swing arm and the bracket 29 can be reduced, and the traction mechanism is suitable for complex terrains.

The beneficial effect of above-mentioned scheme lies in:

1. by adopting the torque tube 14 and the universal joint 15, the rotation of the motor 11 of the power source can be transmitted to the positions of the driving units 3 in a pure mechanical transmission mode, and the positions of the driving units 3 can realize the same consistency of traction movement, and the design can greatly reduce the electrical control cost, so that the whole structure of the tracking support 29 is stable, and the failure rate is low;

2. the winch 17 and the flexible rope are used as an actuating mechanism of the traction device, so that the limitation of the installation terrain of the support 29 can be greatly reduced, the accuracy of the installation positions of the swing arm and the winch 17 speed reducer 16 is reduced, and the efficiency of field installation and debugging of workers is greatly improved;

3. the speed reducer 16 adopts a bevel gear and a reduction spur gear group, so that the rotating motion of the input shaft can be synchronously transmitted to the output shaft, and meanwhile, the rotating motion is transmitted to the mounting shaft of the winch 17 through speed reduction and power amplification, and the transmission, distribution and amplification of the motion are realized.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a multiple spot drive photovoltaic tracking support, includes support main part, power device, a plurality of with the support main part is connected in order to drive the support main part realizes photovoltaic tracking action drive unit and establish ties power device and drive unit and be used for transmitting the power that power device exported the drive unit for drive unit's transmission, the support main part includes a plurality of stands, rotates the main shaft of installing on each stand, its characterized in that: the driving unit comprises a swing arm vertically connected with the main shaft, a speed reducer installed on the upright post and having an input end connected with the driving unit, a winch connected with an output end of the speed reducer, a rope matched with the winch and connected with the swing arm to enable the main shaft to rotate by pulling the swing arm, and a tensioning mechanism arranged on the upright post and used for tensioning the rope.

2. The multi-point drive photovoltaic tracking support according to claim 1, wherein: the cable comprises a first cable and a second cable, a first end of the first cable and a second end of the second cable are respectively fixed on the winch, and a second end of the first cable and a second end of the second cable are respectively connected with two ends of the swing arm.

3. The multi-point drive photovoltaic tracking support according to claim 2, wherein: the winch is provided with two pressing blocks which are respectively connected with the first end of the first rope and the first end of the second rope, and the pressing blocks are installed on the winch through fasteners.

4. The multi-point drive photovoltaic tracking support according to claim 1, wherein: the stand is fixedly provided with a mounting seat, and the speed reducer is arranged on the mounting seat.

5. The multi-point drive photovoltaic tracking support according to claim 1, wherein: the swing arm comprises a first swing arm and a second swing arm, and the first swing arm and the second swing arm are respectively and vertically connected to two axial sides of the spindle.

6. The multi-point drive photovoltaic tracking support according to claim 5, wherein: the first swing arm and the second swing arm are connected with the main shaft through a first flange and a second flange respectively.

7. The multi-point drive photovoltaic tracking support according to claim 1, wherein: the outer end of the swing arm is provided with a lifting lug, and the rope is connected with the lifting lug.

8. The multi-point drive photovoltaic tracking support according to claim 1, wherein: the tensioning mechanism comprises a support fixedly connected with the stand column, an installation rod arranged on the support, two tension springs with one ends connected with the installation rod and symmetrically arranged on two sides of the installation rod, and two pulleys arranged at the other ends of the tension springs respectively, wherein the rope is matched with the pulleys.

9. The multi-point drive photovoltaic tracking support according to claim 1, wherein: the transmission includes a plurality of torque tubes; the power device comprises a motor arranged on the upright post and a reduction box connected with the motor; the torque tube is respectively connected with the speed reducer and the reduction gearbox through universal joints.

10. The multi-point drive photovoltaic tracking support according to claim 9, wherein: the upright post is provided with a support, the reduction gearbox is mounted on the support, and the motor is connected to an input shaft of the reduction gearbox.