CN117353639A - Flexible support photovoltaic power generation device - Google Patents

Flexible support photovoltaic power generation device Download PDF

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Publication number
CN117353639A
CN117353639A CN202311308504.5A CN202311308504A CN117353639A CN 117353639 A CN117353639 A CN 117353639A CN 202311308504 A CN202311308504 A CN 202311308504A CN 117353639 A CN117353639 A CN 117353639A
Authority
CN
China
Prior art keywords
cell panel
photovoltaic cell
power generation
support
gear box
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311308504.5A
Other languages
Chinese (zh)
Inventor
郭春辉
李斌
张宝
武茂东
张浩同
童学伟
韩学良
施蕴
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Delingha Huaneng Tuori New Energy Power Generation Co ltd
Original Assignee
Delingha Huaneng Tuori New Energy Power Generation Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Delingha Huaneng Tuori New Energy Power Generation Co ltd filed Critical Delingha Huaneng Tuori New Energy Power Generation Co ltd
Priority to CN202311308504.5A priority Critical patent/CN117353639A/en
Publication of CN117353639A publication Critical patent/CN117353639A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S20/00—Supporting structures for PV modules
    • H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
    • F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
    • F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
    • F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S25/00—Arrangement of stationary mountings or supports for solar heat collector modules
    • F24S25/50—Arrangement of stationary mountings or supports for solar heat collector modules comprising elongate non-rigid elements, e.g. straps, wires or ropes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S30/00—Arrangements for moving or orienting solar heat collector modules
    • F24S30/40—Arrangements for moving or orienting solar heat collector modules for rotary movement
    • F24S30/42—Arrangements for moving or orienting solar heat collector modules for rotary movement with only one rotation axis
    • F24S30/425—Horizontal axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S50/00—Arrangements for controlling solar heat collectors
    • F24S50/60—Arrangements for controlling solar heat collectors responsive to wind
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Sustainable Development (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Sustainable Energy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Photovoltaic Devices (AREA)

Abstract

The invention discloses a photovoltaic power generation device with a flexible support, which relates to the technical field of photovoltaic power generation and comprises a photovoltaic cell panel and a support, wherein one side of the top of the support is movably connected with the bottom of the photovoltaic cell panel, and an adjusting box is fixedly arranged on the other side of the top of the support; a driving shaft is rotatably arranged between the left side and the right side of the inside of the regulating box, the driving shaft is composed of a driving shaft and two screw rods with opposite thread patterns, the two screw rods are fixedly arranged at the two ends of the driving shaft, one ends of the two screw rods are respectively rotatably connected with one side of the inside of the regulating box, and thread sleeves are arranged on the surfaces of the two screw rods in a threaded manner; and a limiting rod is fixedly arranged between the left side and the right side of the inside of the adjusting box. The invention can lead the support to bear larger wind power, improve the stability of the photovoltaic cell panel, adjust the inclination angle of the photovoltaic cell panel when the wind power is larger, reduce the wind resistance of the photovoltaic cell panel and reduce the pressure of the support.

Description

Flexible support photovoltaic power generation device
Technical Field
The invention relates to the technical field of photovoltaic power generation, in particular to a photovoltaic power generation device with a flexible support.
Background
Photovoltaic power generation is a technique that uses the photovoltaic effect of a semiconductor interface to directly convert light energy into electrical energy. The solar energy power generation system mainly comprises three parts of a solar panel, a controller and an inverter, and the main parts comprise electronic components.
At present, a common photovoltaic fixing support is generally made of steel materials and aluminum materials, deep excavation, concrete pouring and other operations are needed during installation, and the photovoltaic fixing support has the advantage of stability, can bear larger wind pressure and weight, and avoids displacement and damage of a photovoltaic module under the influence of wind and rain; however, after the photovoltaic fixing support is used for a long time, certain deformation can occur under the influence of natural environment, and the wind resistance and the bearing capacity of the photovoltaic fixing support can be reduced, so in order to solve the problems, we propose a flexible support photovoltaic power generation device.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a flexible support photovoltaic power generation device.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a photovoltaic power generation device with a flexible support comprises a photovoltaic cell panel and a support, wherein one side of the top of the support is movably connected with the bottom of the photovoltaic cell panel, and an adjusting box is fixedly arranged on the other side of the top of the support;
a driving shaft is rotatably arranged between the left side and the right side of the inside of the regulating box, the driving shaft is composed of a driving shaft and two screw rods with opposite thread patterns, the two screw rods are fixedly arranged at the two ends of the driving shaft, one ends of the two screw rods are respectively rotatably connected with one side of the inside of the regulating box, and thread sleeves are arranged on the surfaces of the two screw rods in a threaded manner;
a limiting rod is fixedly arranged between the left side and the right side of the inside of the adjusting box, two limiting sleeves and two sliding sleeves are sleeved on the surface of the limiting rod in a sliding manner, the two sliding sleeves are positioned between the two limiting sleeves, the two threaded sleeves are respectively and fixedly connected with the two limiting sleeves, springs are fixedly connected between the two sliding sleeves and the two limiting sleeves, supporting rods are rotatably arranged at the upper ends of the two sliding sleeves, and a through groove for penetrating through the supporting rods is formed in the top of the adjusting box;
the bottom fixed mounting of photovoltaic cell board has the slide rail, the surface sliding mounting of slide rail has the slider, the bottom of slider rotates installs the connecting plate, two the top of bracing piece all with the bottom of connecting plate rotates to be connected.
Further, mounting plates are fixedly mounted on two sides of the bottom of the support, and a plurality of mounting holes are formed in the two mounting plates at equal intervals.
Further, a fixing frame is fixedly arranged at the bottom of the inner side of the support, a second gear box is fixedly arranged at the top of the fixing frame, a first gear box is fixedly arranged at the top of the second gear box, a driving motor is fixedly arranged at one side of the first gear box, and the output end of the driving motor is fixedly connected with the input end of the first gear box;
the surface of transmission shaft with the output of first gear box is all fixed mounting has first sprocket, two be provided with first drive chain between the first sprocket.
Further, the output end of the first gear box and the input end of the second gear box are fixedly provided with second chain wheels, and a second transmission chain is arranged between the two second chain wheels.
Further, the inside rotation of mount is installed and is adjusted the pivot, the both ends that adjust the pivot are located respectively the both sides of mount, the surface of adjusting the pivot with the output of second gear box is all fixed mounting has the third sprocket, two be provided with the third drive chain between the third sprocket.
Further, regulating wheels are fixedly arranged at two ends of the regulating rotating shaft, steel wire ropes are fixedly arranged at the left side and the right side of the bottom of the photovoltaic cell panel, two ends of the steel wire ropes are fixedly connected with the front side and the rear side of the bottom of the photovoltaic cell panel respectively, and the steel wire ropes encircle the surface of the regulating wheels.
Further, a controller and a wind speed and direction sensor are fixedly arranged on the top of the fixing frame, and the controller is electrically connected with the driving motor and the wind speed and direction sensor.
Compared with the prior art, the invention has the beneficial effects that:
1. after the top of the inclined photovoltaic cell panel receives larger wind force, the photovoltaic cell panel presses the supporting rod, so that the supporting rod presses the spring, the spring plays a certain buffering role, and the support can bear larger wind force.
2. According to the invention, the inclination angle is changed by pulling the photovoltaic cell panels from two sides by adopting the steel wire ropes, so that the two sides of the photovoltaic cell panels are more stable when the inclination angle is changed; and after the bottom of the photovoltaic cell panel is acted by wind power, the steel wire rope is stably tied to the photovoltaic cell panel, so that the stability of the photovoltaic cell panel is improved.
3. The wind speed and direction sensor is used for monitoring the wind speed and direction around the photovoltaic cell panel, and when the wind speed is too large, the controller can control the driving motor to drive the photovoltaic cell panel to move, so that the photovoltaic cell panel is in a horizontal state, wind resistance born by the photovoltaic cell panel is reduced, and pressure born by the support is reduced.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention.
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a second schematic diagram of the overall structure of the present invention;
FIG. 3 is an enlarged schematic view of the structure of FIG. 2A according to the present invention;
FIG. 4 is one of the schematic views of the partial structure of the present invention;
FIG. 5 is a second schematic view of a partial structure of the present invention.
In the figure: 1. a photovoltaic cell panel; 2. a wire rope; 3. a bracket; 4. an adjusting wheel; 5. adjusting the rotating shaft; 6. a mounting plate; 7. a fixing frame; 8. an adjusting box; 9. a first gear box; 10. a second gear box; 11. a slide block; 12. a slide rail; 13. a connecting plate; 14. a support rod; 15. a transmission shaft; 16. a screw rod; 17. a thread sleeve; 18. a limit rod; 19. a limit sleeve; 20. a spring; 21. a sliding sleeve; 22. a first sprocket; 23. a second sprocket; 24. a driving motor; 25. and a third sprocket.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention;
referring to fig. 1-5, a flexible support photovoltaic power generation device comprises a photovoltaic cell panel 1 and a support 3, wherein one side of the top of the support 3 is movably connected with the bottom of the photovoltaic cell panel 1, and an adjusting box 8 is fixedly arranged on the other side of the top of the support 3;
the photovoltaic cell panel 1 can rotate by taking the joint with one side of the top of the bracket 3 as an axis, so that the inclination angle of the photovoltaic cell panel 1 can be adjusted; the adjusting box 8 is used for adjusting the inclination angle of the photovoltaic cell panel 1.
A driving shaft is rotatably arranged between the left side and the right side of the inside of the adjusting box 8 and consists of a driving shaft 15 and two screw rods 16 with opposite thread patterns, the two screw rods 16 are fixedly arranged at the two ends of the driving shaft 15, one ends of the two screw rods 16 are respectively rotatably connected with one side of the inside of the adjusting box 8, and thread sleeves 17 are arranged on the surfaces of the two screw rods 16 in a threaded manner;
the screw rod 16 with opposite threads can move in opposite directions after the driving shaft rotates.
A limiting rod 18 is fixedly arranged between the left side and the right side of the inside of the adjusting box 8, two limiting sleeves 19 and two sliding sleeves 21 are sleeved on the surface of the limiting rod 18 in a sliding manner, the two sliding sleeves 21 are positioned between the two limiting sleeves 19, two threaded sleeves 17 are fixedly connected with the two limiting sleeves 19 respectively, springs 20 are fixedly connected between the two sliding sleeves 21 and the two limiting sleeves 19, supporting rods 14 are rotatably arranged at the upper ends of the two sliding sleeves 21, and a through groove for penetrating through the supporting rods 14 is formed in the top of the adjusting box 8; the bottom of the photovoltaic cell panel 1 is fixedly provided with a sliding rail 12, the surface of the sliding rail 12 is slidably provided with a sliding block 11, the bottom end of the sliding block 11 is rotatably provided with a connecting plate 13, and the top ends of two supporting rods 14 are rotatably connected with the bottom of the connecting plate 13.
When the driving shaft rotates, the threaded sleeve 17 drives the limiting sleeve 19 to move, and the limiting sleeve 19 drives the sliding sleeve 21 to move through the spring 20, so that the inclination angle of the supporting rod 14 is changed;
when the two limiting sleeves 19 are close to each other, the two supporting rods 14 are gradually in a vertical state, so that the rear side of the photovoltaic cell panel 1 is too high, and the inclination angle of the photovoltaic cell panel 1 is increased; conversely, when the two limiting sleeves 19 are away from each other, the inclination angle of the photovoltaic cell panel 1 is reduced.
When the top of the inclined photovoltaic cell panel 1 receives larger wind force, the photovoltaic cell panel 1 presses the supporting rod 14, so that the supporting rod 14 presses the spring 20, and the spring 20 plays a certain role in buffering, so that the support 3 can bear larger wind force.
The both sides of support 3 bottom are all fixed mounting has mounting panel 6, and a plurality of mounting hole has been seted up to the inside equal interval of two mounting panels 6.
The support 3 can be stably installed on a platform such as the ground through the installation plate 6, so that the photovoltaic cell panel 1 can stably work.
The bottom of the inner side of the bracket 3 is fixedly provided with a fixing frame 7, the top of the fixing frame 7 is fixedly provided with a second gear box 10, the top of the second gear box 10 is fixedly provided with a first gear box 9, one side of the first gear box 9 is fixedly provided with a driving motor 24, and the output end of the driving motor 24 is fixedly connected with the input end of the first gear box 9; the surface of the transmission shaft 15 and the output end of the first gear box 9 are fixedly provided with first chain wheels 22, and a first transmission chain is arranged between the two first chain wheels 22.
The driving motor 24 can drive the driving shaft to rotate through the first gear box 9, the first sprocket 22 and the first transmission chain, so that the supporting rod 14 pushes or pulls down the rear side of the photovoltaic cell panel 1, and the inclination angle of the photovoltaic cell panel 1 is changed.
The output end of the first gear box 9 and the input end of the second gear box 10 are fixedly provided with second chain wheels 23, and a second transmission chain is arranged between the two second chain wheels 23. The inside rotation of mount 7 is installed and is adjusted pivot 5, and the both ends of adjusting pivot 5 are located the both sides of mount 7 respectively, and the surface of adjusting pivot 5 and the output of second gear box 10 are all fixed mounting have third sprocket 25, are provided with the third drive chain between two third sprockets 25. The two ends of the adjusting rotating shaft 5 are fixedly provided with adjusting wheels 4, the left side and the right side of the bottom of the photovoltaic cell panel 1 are fixedly provided with steel wire ropes 2, the two ends of the two steel wire ropes 2 are respectively and fixedly connected with the front side and the rear side of the bottom of the photovoltaic cell panel 1, and the steel wire ropes 2 encircle the surface of the adjusting wheels 4;
the driving motor 24 drives the driving shaft to rotate, and simultaneously drives the adjusting rotating shaft 5 to rotate through the first gear box 9, the second chain wheel 23, the second transmission chain, the second gear box 10, the third chain wheel 25 and the third transmission chain, the adjusting rotating shaft 5 drives the two adjusting wheels 4 to rotate after rotating, and the length of the steel wire ropes 2 at two sides can be changed after the adjusting wheels 4 rotate, so that the photovoltaic cell panel 1 is pulled by the steel wire ropes 2 to change the inclination angle; the inclination angle can be changed by pulling the photovoltaic cell panel 1 from two sides by adopting the steel wire ropes 2, so that the two sides of the photovoltaic cell panel 1 are more stable when the inclination angle is changed; and after the bottom of the photovoltaic cell panel 1 is acted by wind force, the steel wire rope 2 is stably fastened to the photovoltaic cell panel 1, so that the stability of the photovoltaic cell panel 1 is improved.
A controller and a wind speed and direction sensor are fixedly arranged at the top of the fixed frame 7, and the controller is electrically connected with the driving motor 24 and the wind speed and direction sensor;
the wind speed and direction sensor is used for monitoring the wind speed and direction around the photovoltaic cell panel 1, when the wind speed is overlarge, the controller can control the driving motor 24 to drive the photovoltaic cell panel 1 to move, so that the photovoltaic cell panel 1 is in a horizontal state, the wind resistance suffered by the photovoltaic cell panel 1 is reduced, and the pressure suffered by the bracket 3 is reduced.

Claims (7)

1. The photovoltaic power generation device with the flexible support comprises a photovoltaic cell panel (1) and a support (3), wherein one side of the top of the support (3) is movably connected with the bottom of the photovoltaic cell panel (1), and the photovoltaic power generation device is characterized in that an adjusting box (8) is fixedly arranged on the other side of the top of the support (3);
a driving shaft is rotatably arranged between the left side and the right side of the inside of the regulating box (8), the driving shaft is composed of a driving shaft (15) and two screw rods (16) with opposite thread patterns, the two screw rods (16) are fixedly arranged at two ends of the driving shaft (15), one end of each screw rod (16) is rotatably connected with one side of the inside of the regulating box (8) respectively, and thread sleeves (17) are arranged on the surfaces of the two screw rods (16) in a threaded manner;
a limiting rod (18) is fixedly arranged between the left side and the right side of the inside of the adjusting box (8), two limiting sleeves (19) and two sliding sleeves (21) are sleeved on the surface of the limiting rod (18) in a sliding manner, the two sliding sleeves (21) are positioned between the two limiting sleeves (19), the two threaded sleeves (17) are fixedly connected with the two limiting sleeves (19) respectively, a spring (20) is fixedly connected between the two sliding sleeves (21) and the two limiting sleeves (19), supporting rods (14) are rotatably arranged at the upper ends of the two sliding sleeves (21), and through grooves for penetrating through the supporting rods (14) are formed in the top of the adjusting box (8);
the photovoltaic cell panel is characterized in that a sliding rail (12) is fixedly arranged at the bottom of the photovoltaic cell panel (1), a sliding block (11) is slidably arranged on the surface of the sliding rail (12), a connecting plate (13) is rotatably arranged at the bottom end of the sliding block (11), and the top ends of the two supporting rods (14) are rotatably connected with the bottom of the connecting plate (13).
2. The flexible support photovoltaic power generation device according to claim 1, wherein mounting plates (6) are fixedly mounted on two sides of the bottom of the support (3), and a plurality of mounting holes are formed in the two mounting plates (6) at equal intervals.
3. The flexible support photovoltaic power generation device according to claim 1, wherein a fixing frame (7) is fixedly arranged at the bottom of the inner side of the support (3), a second gear box (10) is fixedly arranged at the top of the fixing frame (7), a first gear box (9) is fixedly arranged at the top of the second gear box (10), a driving motor (24) is fixedly arranged at one side of the first gear box (9), and the output end of the driving motor (24) is fixedly connected with the input end of the first gear box (9);
the surface of the transmission shaft (15) and the output end of the first gear box (9) are fixedly provided with first chain wheels (22), and a first transmission chain is arranged between the two first chain wheels (22).
4. A flexible support photovoltaic power generation device according to claim 3, characterized in that the output end of the first gear box (9) and the input end of the second gear box (10) are fixedly provided with second chain wheels (23), and a second transmission chain is arranged between the two second chain wheels (23).
5. The flexible support photovoltaic power generation device according to claim 4, wherein an adjusting rotating shaft (5) is installed in the fixing frame (7) in a rotating mode, two ends of the adjusting rotating shaft (5) are located at two sides of the fixing frame (7) respectively, third chain wheels (25) are fixedly installed on the surface of the adjusting rotating shaft (5) and the output end of the second gear box (10), and a third transmission chain is arranged between the two third chain wheels (25).
6. The flexible support photovoltaic power generation device according to claim 5, wherein the two ends of the adjusting rotating shaft (5) are fixedly provided with adjusting wheels (4), the left side and the right side of the bottom of the photovoltaic cell panel (1) are fixedly provided with steel wire ropes (2), the two ends of the two steel wire ropes (2) are respectively fixedly connected with the front side and the rear side of the bottom of the photovoltaic cell panel (1), and the steel wire ropes (2) encircle the surface of the adjusting wheels (4).
7. A flexible support photovoltaic power generation device according to claim 3, characterized in that a controller and a wind speed and direction sensor are fixedly arranged on the top of the fixing frame (7), and the controller is electrically connected with the driving motor (24) and the wind speed and direction sensor.
CN202311308504.5A 2023-10-10 2023-10-10 Flexible support photovoltaic power generation device Pending CN117353639A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311308504.5A CN117353639A (en) 2023-10-10 2023-10-10 Flexible support photovoltaic power generation device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311308504.5A CN117353639A (en) 2023-10-10 2023-10-10 Flexible support photovoltaic power generation device

Publications (1)

Publication Number Publication Date
CN117353639A true CN117353639A (en) 2024-01-05

Family

ID=89367543

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311308504.5A Pending CN117353639A (en) 2023-10-10 2023-10-10 Flexible support photovoltaic power generation device

Country Status (1)

Country Link
CN (1) CN117353639A (en)

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