Synchronous traction system for driving folding photovoltaic module to unfold or fold

Abstract

The invention belongs to the technical field of photovoltaic equipment, and particularly relates to a synchronous traction system for driving a folding photovoltaic module to unfold or fold, which is connected with two ends of a steel rope through two winding drums on a double-winding-drum winch respectively. The middle of the steel rope is sequentially wound on the first fixed pulley, the second fixed pulley, the third fixed pulley, the fourth fixed pulley, the fifth fixed pulley and the sixth fixed pulley, and the part, located between the second fixed pulley and the third fixed pulley, of the steel rope is connected with one side of the movable end of the shear fork mechanism. The part, located between the fourth fixed pulley and the fifth fixed pulley, of the steel rope is connected with the other side of the movable end of the shear fork mechanism, the steel rope is wound through one winding drum of the double-winding-drum winch, the steel rope can synchronously pull the two sides of the movable end of the shear fork mechanism, and synchronous action of the movable end of the shear fork mechanism is achieved; and clamping stagnation caused by asynchronism of the two sides of the movable end of the shear fork mechanism is avoided, so that the folding photovoltaic system is more convenient to use, and the service life of the folding photovoltaic system is prolonged.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of photovoltaic devices, and particularly relates to a synchronous traction system for driving a folding photovoltaic assembly to unfold or fold. BACKGROUND

[0002] The folding photovoltaic assembly is a commonly used photovoltaic device in the prior art, which comprises a first supporting arm, a second supporting arm and a scissor mechanism. The first supporting arm and the second supporting arm are arranged oppositely and in parallel. The scissor mechanism is provided with a plurality of photovoltaic panels. The scissor mechanism is arranged between the first supporting arm and the second supporting arm. The fixed ends of the scissor mechanism are fixedly arranged on the fixed ends of the first supporting arm and the second supporting arm, respectively. The movable ends of the scissor mechanism are slidingly arranged on the first supporting arm and the second supporting arm, respectively. The movable ends of the scissor mechanism can slide along the long axis direction of the first supporting arm and the second supporting arm, so as to realize the rapid unfolding and contraction of the photovoltaic panels, that is, the switching between the unfolded and folded states of the folding photovoltaic assembly.

[0003] At present, the driving scheme for switching the state of the folding photovoltaic assembly is mostly realized by relying on a chain cooperating with a track. During the driving process, two motors (driving the two sides of the movable end of the scissor mechanism, respectively) are needed to drive the chain to rotate, so as to pull the movable end of the scissor mechanism to act. However, the driving mode of the two motors cooperating with each other is prone to out-of-sync, so that the two sides of the movable end of the scissor mechanism are prone to jamming due to out-of-sync sliding, which causes the deformation of the scissor mechanism and the photovoltaic panels arranged on the scissor mechanism. SUMMARY

[0004] The present application provides a synchronous traction system for driving a folding photovoltaic assembly to unfold or fold, so as to solve the technical problem that the two-motor driving mode in the prior art is prone to out-of-sync, so that the two sides of the movable end of the scissor mechanism are prone to jamming due to out-of-sync sliding, which causes the deformation of the scissor mechanism and the photovoltaic panels.

[0005] The present application is achieved by the following technical scheme: A synchronous traction system for driving a folding photovoltaic assembly to unfold or fold, comprising a double-drum winch, a first fixed pulley, a second fixed pulley, a third fixed pulley, a fourth fixed pulley, a fifth fixed pulley and a sixth fixed pulley. The first fixed pulley and the third fixed pulley are both arranged at one end of the first supporting arm, and the second fixed pulley is arranged at the other end of the first supporting arm. The double-drum winch is arranged on the side of the first supporting arm away from the second supporting arm, and is arranged close to the first fixed pulley. The fourth fixed pulley and the sixth fixed pulley are both arranged at one end of the second supporting arm, and the fifth fixed pulley is arranged at the other end of the second supporting arm. The first winding drum of the double winding drum hoist is wound with a steel rope, the movable end of the steel rope is wound around the first fixed pulley, the second fixed pulley, the third fixed pulley, the fourth fixed pulley, the fifth fixed pulley and the sixth fixed pulley in sequence, and then is wound around the second winding drum of the double winding drum hoist, and the part of the steel rope between the second fixed pulley and the third fixed pulley is connected to one side of the movable end of the scissor mechanism, and the part of the steel rope between the fourth fixed pulley and the fifth fixed pulley is connected to the other side of the movable end of the scissor mechanism.

[0006] In order to better realize the present application, the synchronous traction system for driving the folding photovoltaic module to unfold or fold further comprises a guide wheel and a tensioning assembly in the above structure; The guide wheel and the tensioning assembly are both arranged on the first supporting arm, and the tensioning end of the tensioning assembly can act along the long axis direction of the first supporting arm; The movable end of the steel rope is wound around the first fixed pulley, then is wound around the tensioning end of the tensioning assembly and the guide wheel in sequence, and extends to the direction of the second fixed pulley.

[0007] In order to better realize the present application, the tensioning assembly comprises a tensioning bracket and a tensioning wheel in the above structure; The tensioning bracket is arranged on the first supporting arm, the long axis of the tensioning bracket is parallel to the long axis of the first supporting arm, a sliding block that slides along the long axis direction of the tensioning bracket is arranged on the tensioning bracket, a tensioning nut is arranged on the first supporting arm, the axis of the tensioning nut is parallel to the long axis of the first supporting arm, a tensioning screw that threadedly cooperates with the tensioning nut is arranged on the tensioning nut, and one end of the tensioning screw is rotationally connected with the sliding block; The tensioning wheel is rotationally arranged on the sliding block.

[0008] In order to better realize the present application, the synchronous traction system for driving the folding photovoltaic module to unfold or fold further comprises a seventh fixed pulley in the above structure; The seventh fixed pulley is located between the fifth fixed pulley and the sixth fixed pulley, and the distance between the rotation axis of the seventh fixed pulley and the rotation axis of the fourth fixed pulley in the vertical direction is greater than the diameter of the fifth fixed pulley; The movable end of the steel rope is wound around the fifth fixed pulley, the seventh fixed pulley and the sixth fixed pulley in sequence, and then is wound around the second winding drum of the double winding drum hoist.

[0009] In order to better realize the present application, the synchronous traction system for driving the folding photovoltaic module to unfold or fold further comprises an eighth fixed pulley in the above structure; The eighth fixed pulley is arranged at one end of the first supporting arm corresponding to the double winding drum hoist; The movable end of the steel rope is sequentially wound around the sixth fixed pulley and the eighth fixed pulley, and then is wound on the second winding drum of the double winding drum winch.

[0010] In order to better realize the present application, further optimization is made to the above structure, and the synchronous traction system for driving the folding photovoltaic assembly to unfold or fold further comprises a connecting block; The connecting block is provided with a through hole, and the number of the connecting block is two, and the two connecting blocks are respectively arranged on the part of the steel rope between the second fixed pulley and the third fixed pulley and the part of the steel rope between the fourth fixed pulley and the fifth fixed pulley through the through hole, and the connecting block is connected and fixed with the steel rope. The two connecting blocks are respectively connected with the two sides of the movable end of the scissor mechanism.

[0011] In order to better realize the present application, further optimization is made to the above structure, and the synchronous traction system for driving the folding photovoltaic assembly to unfold or fold further comprises a limiting stopper; The number of the limiting stopper is two, and the two limiting stoppers are respectively arranged at the two ends of the first supporting arm. And the two limiting stoppers are electrically connected with the controller of the double winding drum winch.

[0012] In order to better realize the present application, further optimization is made to the above structure, and the synchronous traction system for driving the folding photovoltaic assembly to unfold or fold further comprises a wind speed sensor and a light sensor; The wind speed sensor and the light sensor are electrically connected with the controller of the double winding drum winch.

[0013] Compared with the prior art, the present application has the following beneficial effects: In the synchronous traction system for driving the folding photovoltaic assembly to unfold or fold, the two ends of a steel rope are respectively connected with the two winding drums of a double winding drum winch, the middle part of the steel rope is sequentially wound on the first fixed pulley, the second fixed pulley, the third fixed pulley, the fourth fixed pulley, the fifth fixed pulley and the sixth fixed pulley, the part of the steel rope between the second fixed pulley and the third fixed pulley is connected with one side of the movable end of the scissor mechanism, and the part of the steel rope between the fourth fixed pulley and the fifth fixed pulley is connected with the other side of the movable end of the scissor mechanism. By pulling the steel rope with the first winding drum of the double winding drum winch, the steel rope can synchronously pull the two sides of the movable end of the scissor mechanism, realize the synchronous action of the movable end of the scissor mechanism, avoid the asynchronous sliding of the two sides of the movable end of the scissor mechanism, cause the movable end of the scissor mechanism to be stuck, and cause the deformation of the scissor mechanism and the photovoltaic panel. Thus, the use of the folding photovoltaic system is more convenient, and the service life thereof is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1It is the structural schematic view of the synchronous traction system provided by the application.

[0015] Figure 2 It is Figure 1 The partial enlarged view of A part in the figure.

[0016] Figure 3 It is Figure 1 The partial enlarged view of B part in the figure.

[0017] Figure 4 It is the structural schematic view of the folding photovoltaic module installed with the synchronous traction system.

[0018] Figure 5 It is the structural schematic view of the synchronous traction system cooperating with the folding photovoltaic module.

[0019] Figure 6 It is the structural schematic view of the first support arm.

[0020] Figure 7 It is Figure 6 The partial enlarged view of C part in the figure.

[0021] Figure 8 It is the structural schematic view of the second support arm.

[0022] In the figure: 1, double-drum hoist; 2, first support arm; 21, first fixed pulley; 22, second fixed pulley; 23, third fixed pulley; 24, guide wheel; 25, tensioning assembly; 251, tensioning support; 252, sliding block; 253, tensioning nut; 254, tensioning screw; 255, tensioning wheel; 26, eighth fixed pulley; 27, position limiter; 3, second support arm; 31, fourth fixed pulley; 32, fifth fixed pulley; 33, sixth fixed pulley; 34, seventh fixed pulley; 4, connecting block; 5, scissor mechanism; 6, steel rope. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the application more clear, the technical scheme of the application will be described in detail below.

[0024] In the embodiment of the application, as Figures 1 to 8 shown, the synchronous traction system can be used to drive the folding photovoltaic module to unfold or fold, which comprises a double-drum hoist 1, a first fixed pulley 21, a second fixed pulley 22, a third fixed pulley 23, a fourth fixed pulley 31, a fifth fixed pulley 32 and a sixth fixed pulley 33; wherein the first fixed pulley 21 and the third fixed pulley 23 are both arranged at one end of a first support arm 2 of the folding photovoltaic module, and the second fixed pulley 22 is arranged at the other end of the first support arm 2; the double-drum hoist 1 is arranged at the side of the first support arm 2 away from a second support arm 3, and is arranged close to the first fixed pulley 21, see Figure 6 ; The fourth fixed pulley 31 and the sixth fixed pulley 33 are arranged at one end of the second support arm 3 in the folded photovoltaic module, and the fifth fixed pulley 32 is arranged at the other end of the second support arm 3, as shown in Figure 8 ; One of the two drums of the double-drum hoist 1 is wound with the steel wire 6, the movable end of the steel wire 6 is wound around the first fixed pulley 21, the second fixed pulley 22, the third fixed pulley 23, the fourth fixed pulley 31, the fifth fixed pulley 32 and the sixth fixed pulley 33 in sequence, and then is wound around the other drum of the double-drum hoist 1, as shown in Figure 1 , Figure 4 and Figure 5 The part of the steel wire 6 between the second fixed pulley 22 and the third fixed pulley 23 is connected to one side of the movable end of the scissor mechanism 5, and the part of the steel wire 6 between the fourth fixed pulley 31 and the fifth fixed pulley 32 is connected to the other side of the movable end of the scissor mechanism 5; In this embodiment, the first fixed pulley 21 is located below the third fixed pulley 23, as shown in Figure 1 and Figure 2 The rotation axis of the first fixed pulley 21 and the rotation axis of the third fixed pulley 23 are both perpendicular to the horizontal plane, the rotation axis of the second fixed pulley 22 is parallel to the horizontal plane, and the height of the second fixed pulley 22 is equal to the height of the third fixed pulley 23; One end of the steel wire 6 extends into the first support arm 2 from the position of the double-drum hoist 1, passes around the first fixed pulley 21, and then extends to the other end of the first support arm 2; subsequently, the steel wire 6 passes around the second fixed pulley 22, extends to the position of the third fixed pulley 23, and then extends to the position of the second support arm 3 after passing around the third fixed pulley 23; The fourth fixed pulley 31 is located above the sixth fixed pulley 33, as shown in Figure 1 and Figure 3 The rotation axis of the fourth fixed pulley 31 is perpendicular to the horizontal plane, the rotation axis of the fifth fixed pulley 32 is parallel to the horizontal plane, and the axis of the sixth fixed pulley 33 is arranged at an angle to the horizontal plane; The steel wire 6 extending from the first support arm 2 to the position of the second support arm 3 can pass around the fourth fixed pulley 31 and extend to the other end of the second support arm 3; subsequently, the steel wire 6 passes around the fifth fixed pulley 32, extends to the position of the sixth fixed pulley 33, and then extends to the position of the double-drum hoist 1 and is wound around the other drum of the double-drum hoist 1 after passing around the sixth fixed pulley 33; Since the position of the steel wire 6 extending from the other end of the second support arm 3 to the sixth fixed pulley 33 is slightly lower than the height of the other drum of the double-drum hoist 1, the sixth fixed pulley 33 is arranged obliquely to enable the steel wire 6 to pass around the sixth fixed pulley 33 and be wound around the other drum of the double-drum hoist 1.

[0025] In the initial state, the folded photovoltaic assembly is in the folded state, and the photovoltaic panel arranged on the scissor mechanism 5 is in the contracted state, close to one end (fixed end) of the first support arm 2 and the second support arm 3; In order to better illustrate the working mode of the synchronous traction system, the two drums of the double-drum winch 1 are named as the first drum and the second drum respectively below; When it is needed to expand the photovoltaic panel, the staff can control the rotation of the two drums on the double-drum winch 1, so that the first drum winds the steel rope 6 and the second drum releases the steel rope 6, and the two sides of the movable end of the scissor mechanism 5 are synchronously pulled to the other end (free end) of the first support arm 2 and the second support arm 3 by the steel rope 6, so that the two sides of the movable end of the scissor mechanism 5 are synchronously slid to the other end of the first support arm 2 and the second support arm 3 to expand, and the photovoltaic panel changes from the contracted state to the expanded state, that is, the folded photovoltaic assembly changes from the folded state to the expanded state, see Figure 4 ; When it is needed to contract the photovoltaic panel, the staff can control the rotation of the two drums on the double-drum winch 1 (in the opposite direction to that when the photovoltaic panel is expanded), so that the first drum releases the steel rope 6 and the second drum winds the steel rope 6, and the two sides of the movable end of the scissor mechanism 5 are synchronously pulled to one end (fixed end) of the first support arm 2 and the second support arm 3 by the steel rope 6, so that the two sides of the movable end of the scissor mechanism 5 are synchronously folded to one end of the first support arm 2 and the second support arm 3, and the folded photovoltaic assembly changes from the expanded state to the folded state; During the whole working process, the first drum or the second drum of the double-drum winch 1 winds the steel rope 6, so that the steel rope 6 can synchronously pull the two sides of the movable end of the scissor mechanism 5, realize the synchronous action of the movable end of the scissor mechanism 5, avoid the situation that the two sides of the movable end of the scissor mechanism 5 are out of synchronization and slide, and cause the movable end of the scissor mechanism 5 to be stuck, and the deformation of the scissor mechanism 5 and the photovoltaic panel, so that the use of the folded photovoltaic system is more convenient, and the service life thereof is improved.

[0026] In some embodiments, the synchronous traction system further comprises a guide wheel 24 and a tensioning assembly 25, see Figure 1 、 Figure 6 and Figure 7 ; The guide wheel 24 and the tensioning assembly 25 are both arranged on the first support arm 2, and the tensioning end of the tensioning assembly 25 can act along the long axis direction of the first support arm 2; The movable end of the steel rope 6 passes through the first fixed pulley 21, then passes through the tensioning end of the tensioning assembly 25 and the guide wheel 24 in sequence, and extends to the direction of the second fixed pulley 22; by pulling the steel rope 6 through the tensioning assembly 25, the slack of the steel rope 6 that may be caused by long-term use can be conveniently adjusted, the transmission efficiency and the synchronization are ensured, and the service life of the synchronous traction system is prolonged.

[0027] In addition, the tensioning assembly 25 can also ensure that the steel cable 6 is always in a tight state, so as to ensure that the steel cable 6 will not fall off the plurality of fixed pulleys.

[0028] In the embodiment, the guide wheel 24 and the tensioning assembly 25 are located between the first fixed pulley 21 and the second fixed pulley 22, as shown in Figure 1 , and the tensioning end of the tensioning assembly 25 is arranged close to the second fixed pulley 22, the guide wheel 24 is arranged close to the first fixed pulley 21, and the tensioning end of the tensioning assembly 25 is located above the guide wheel 24; After the movable end of the steel cable 6 passes through the first fixed pulley 21, it passes through the tensioning end of the tensioning assembly 25 and the guide wheel 24 in an "S" shape, and extends to the direction of the second fixed pulley 22, as shown in Figure 1 and Figure 7 The tensioning degree of the steel cable 6 can be adjusted by adjusting the distance between the tensioning end of the tensioning assembly 25 and the guide wheel 24.

[0029] In some embodiments, the tensioning assembly 25 described above comprises a tensioning bracket 251 and a tensioning wheel 255, as shown in Figure 7 ; wherein the tensioning bracket 251 is arranged on the first support arm 2, the long axis of the tensioning bracket 251 is parallel to the long axis of the first support arm 2, and the tensioning bracket 251 is provided with a sliding block 252 sliding along the long axis direction of the tensioning bracket 251; the first support arm 2 is provided with a tensioning nut 253, the axis of the tensioning nut 253 is parallel to the long axis of the first support arm 2, the tensioning nut 253 is provided with a tensioning screw 254 threadedly matched with the tensioning nut 253, and one end of the tensioning screw 254 is rotationally connected with the sliding block 252; The tensioning wheel 255 is rotationally arranged on the sliding block 252; By screwing the tensioning screw 254, the distance between the tensioning wheel 255 and the guide wheel 24 can be adjusted to realize the adjustment of the tensioning degree of the steel cable 6, so that the use of the synchronous traction system is more convenient.

[0030] It is worth noting that the rotation axes of the guide wheel 24 and the tensioning wheel 255 are both parallel to the rotation axis of the second fixed pulley 22.

[0031] In some embodiments, the synchronous traction system further comprises a seventh fixed pulley 34, as shown in Figure 1 and Figure 8 ; wherein the seventh fixed pulley 34 is located between the fifth fixed pulley 32 and the sixth fixed pulley 33, the rotation axis of the seventh fixed pulley 34 is parallel to the rotation axis of the fifth fixed pulley 32, and the distance between the rotation axis of the seventh fixed pulley 34 and the rotation axis of the fourth fixed pulley 31 in the vertical direction is greater than the diameter of the fifth fixed pulley 32; The movable end of the steel rope 6 is wound around the second drum of the double-drum winch 1 after passing through the fifth fixed pulley 32, the seventh fixed pulley 34 and the sixth fixed pulley 33 in sequence. The seventh fixed pulley 34 can increase the distance between the two sections of the steel rope 6 between the fifth fixed pulley 32 and the sixth fixed pulley 33, so as to avoid the contact or winding of the two sections of the steel rope 6 on other positions of the scissor mechanism 5, which causes the scissor mechanism 5 to be unable to normally open or fold, and affects the use of the folded photovoltaic module.

[0032] In some embodiments, the synchronous traction system further comprises an eighth fixed pulley 26, as shown in Figure 1 and Figure 2 ; wherein the eighth fixed pulley 26 is arranged at one end of the first support arm 2 corresponding to the double-drum winch 1, and is arranged close to the upper edge of the first support arm 2, and the rotation axis of the eighth fixed pulley 26 is parallel to the long axis of the first support arm 2. The movable end of the steel rope 6 is wound around the second drum of the double-drum winch 1 after passing through the sixth fixed pulley 33 and the eighth fixed pulley 26 in sequence, so as to avoid the contact between the steel rope 6 and the first support arm 2 and the occurrence of abrasion.

[0033] In some embodiments, the synchronous traction system further comprises a connecting block 4, as shown in Figure 1 , Figure 6 and Figure 8 ; wherein the connecting block 4 is provided with a through hole, and the number of the connecting block 4 is two, and the two connecting blocks 4 are arranged on the part of the steel rope 6 between the second fixed pulley 22 and the third fixed pulley 23 and the part of the steel rope 6 between the fourth fixed pulley 31 and the fifth fixed pulley 32 through the through hole respectively, and the connecting block 4 is connected and fixed with the steel rope 6. The two connecting blocks 4 are connected with the two sides of the movable end of the scissor mechanism 5 respectively.

[0034] It is worth noting that the fixing mode of the connecting block 4 and the steel rope 6 can be bolt locking (the bolt is inserted from the outside and tightly abuts against the steel rope to realize the fixing), so that the position of the connecting block 4 can be adjusted according to the site condition, so as to ensure that the two sides of the movable end of the scissor mechanism 5 can move synchronously under the traction of the steel rope 6; if the two sides of the movable end of the scissor mechanism 5 are not synchronous when the double-drum winch 1 moves, the staff can unscrew the bolt and re-adjust the position of the connecting block 4 on the steel rope 6.

[0035] Of course, the fixing mode of the connecting block 4 and the steel rope 6 can also be welding, and before welding, it is necessary to ensure that the steel rope 6 is in a tight state, so as to ensure that the two sides of the movable end of the scissor mechanism 5 can move synchronously under the traction of the steel rope 6 after the welding is completed.

[0036] In some embodiments, the synchronous traction system further comprises a limiting device 27, as shown in Figure 6; wherein, the number of limiters 27 is two, and the two limiters 27 are respectively arranged at the two ends of the first support arm 2; and the two limiters 27 are electrically connected with the controller of the double-drum winch 1; In the process of unfolding the photovoltaic panel, the connecting block 4 on the movable end of the scissor mechanism 5 moves towards the free ends of the first support arm 2 and the second support arm 3; when the distance between the connecting block 4 on the movable end of the scissor mechanism 5 (corresponding to the connecting block 4 on the side of the first support arm 2) and the limiter 27 (located at the free end of the first support arm 2) is equal to the set distance, the limiter 27 will send a stop signal to the controller of the double-drum winch 1, and the controller of the double-drum winch 1 will control the double-drum winch 1 to stop working when receiving the stop signal, so that the position of the movable end of the scissor mechanism 5 no longer changes, and at this time, the movable end of the scissor mechanism 5 is unfolded to the limit position; In the process of folding the photovoltaic panel, the connecting block 4 on the movable end of the scissor mechanism 5 moves towards the fixed ends of the first support arm 2 and the second support arm 3; when the distance between the connecting block 4 on the movable end of the scissor mechanism 5 (corresponding to the connecting block 4 on the side of the first support arm 2) and the limiter 27 (located at the fixed end of the first support arm 2) is less than the set distance, the limiter 27 will send a stop signal to the controller of the double-drum winch 1, and the controller of the double-drum winch 1 will control the double-drum winch 1 to stop working when receiving the stop signal, so that the position of the movable end of the scissor mechanism 5 no longer changes, and at this time, the movable end of the scissor mechanism 5 is folded to the limit position.

[0037] It is worth noting that the above-mentioned set distance can be set by the staff, and the staff measures the distance between the connecting block 4 and the limiter 27 when the scissor mechanism 5 is unfolded and folded to the limit position, and inputs the distance data into the control system of the limiter 27, and monitors the distance between the connecting block 4 and the limiter 27 through the limiter 27, so that the double-drum winch 1 automatically stops when the movable end of the scissor mechanism 5 is moved to the position, so as to improve the service life and use convenience of the folded photovoltaic assembly.

[0038] In some embodiments, the synchronous traction system further comprises a wind speed sensor (not shown in the figure) and a light sensor (not shown in the figure); The wind speed sensor and the light sensor are electrically connected with the controller of the double-drum winch 1; Before use, the staff can input the set threshold of wind speed and light energy into the controller of the double-drum winch 1; When the wind speed is greater than the set threshold or the light energy is less than the set threshold, the wind speed sensor or the light sensor will send a folding signal to the controller of the double-drum winch 1, and the double-drum winch 1 drives the scissor mechanism 5 to fold, so as to complete the automatic contraction of the photovoltaic panel, and avoid the damage of the scissor mechanism 5 caused by the influence of wind force in a strong wind environment; When the wind speed is less than the set threshold value and the light energy is greater than the set threshold value, the wind speed sensor or the light sensor sends an unfolding signal to the controller of the double-drum winch 1, and the double-drum winch 1 drives the scissor mechanism 5 to unfold, thereby completing the automatic unfolding of the photovoltaic panel.

[0039] It is worth noting that the priority of the wind speed judgment is higher than that of the light energy judgment, that is, when the wind speed is greater than the set threshold value, even if the light energy is greater than the set threshold value, the controller of the double-drum winch 1 still controls the double-drum winch 1 to drive the scissor mechanism 5 to fold.

[0040] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A synchronized traction system for driving the deployment or folding of a folding photovoltaic assembly, characterized in that: The double-drum winch (1), the first fixed pulley (21), the second fixed pulley (22), the third fixed pulley (23), the fourth fixed pulley (31), the fifth fixed pulley (32) and the sixth fixed pulley (33) are included. The first fixed pulley (21) and the third fixed pulley (23) are arranged at one end of the first support arm (2), and the second fixed pulley (22) is arranged at the other end of the first support arm (2); the double-drum winch (1) is arranged on the side of the first support arm (2) away from the second support arm (3) and close to the first fixed pulley (21). The fourth fixed pulley (31) and the sixth fixed pulley (33) are arranged at one end of the second support arm (3), and the fifth fixed pulley (32) is arranged at the other end of the second support arm (3). The first drum of the double-drum winch (1) is wound with a steel rope (6), the movable end of the steel rope (6) passes through the first fixed pulley (21), the second fixed pulley (22), the third fixed pulley (23), the fourth fixed pulley (31), the fifth fixed pulley (32) and the sixth fixed pulley (33) in sequence and is wound on the second drum of the double-drum winch (1), the part of the steel rope (6) between the second fixed pulley (22) and the third fixed pulley (23) is connected with one side of the movable end of the scissor mechanism (5), and the part of the steel rope (6) between the fourth fixed pulley (31) and the fifth fixed pulley (32) is connected with the other side of the movable end of the scissor mechanism (5).

2. A synchronized traction system for driving the deployment or folding of a folding photovoltaic assembly according to claim 1, characterized in that: The guide wheel (24) and the tensioning assembly (25) are further included. The guide wheel (24) and the tensioning assembly (25) are arranged on the first support arm (2), and the tensioning end of the tensioning assembly (25) can act along the long axis direction of the first support arm (2). The movable end of the steel rope (6) passes through the first fixed pulley (21), then passes through the tensioning end of the tensioning assembly (25) and the guide wheel (24) in sequence and extends to the direction where the second fixed pulley (22) is located.

3. A synchronized traction system for driving the deployment or folding of a folding photovoltaic assembly according to claim 2, characterized in that: The tensioning assembly (25) includes a tensioning bracket (251) and a tensioning wheel (255). The tensioning bracket (251) is arranged on the first support arm (2), the long axis of the tensioning bracket (251) is parallel to the long axis of the first support arm (2), and the tensioning bracket (251) is provided with a sliding block (252) sliding along the long axis direction of the tensioning bracket (251); the first support arm (2) is provided with a tensioning nut (253), the axis of the tensioning nut (253) is parallel to the long axis of the first support arm (2), the tensioning nut (253) is provided with a tensioning screw (254) threadedly matched with the tensioning nut (253), and one end of the tensioning screw (254) is rotationally connected with the sliding block (252). The tensioning wheel (255) is rotationally arranged on the sliding block (252).

4. A synchronized traction system for driving the deployment or folding of a folding photovoltaic assembly according to claim 1, characterized in that: The seventh fixed pulley (34) is further included. The seventh fixed pulley (34) is located between the fifth fixed pulley (32) and the sixth fixed pulley (33), and the distance between the rotation axis of the seventh fixed pulley (34) and the rotation axis of the fourth fixed pulley (31) in the vertical direction is greater than the diameter of the fifth fixed pulley (32). The movable end of the steel rope (6) is wound on the second drum of the double-drum winch (1) after passing through the fifth fixed pulley (32), the seventh fixed pulley (34) and the sixth fixed pulley (33) in sequence.

5. A synchronized traction system for driving the deployment or folding of a folding photovoltaic assembly according to claim 1, characterized in that: Further comprising an eighth fixed pulley (26); The eighth fixed pulley (26) is arranged at one end of the first support arm (2) corresponding to the double-drum winch (1). The movable end of the steel rope (6) is wound on the second drum of the double-drum winch (1) after passing through the sixth fixed pulley (33) and the eighth fixed pulley (26) in sequence.

6. A synchronized traction system for driving the deployment or folding of a folding photovoltaic assembly according to claim 1, characterized in that: Further comprising a connecting block (4); The connecting block (4) is provided with a through hole, and the number of the connecting block (4) is two. The two connecting blocks (4) are arranged on the part of the steel rope (6) between the second fixed pulley (22) and the third fixed pulley (23) and the part of the steel rope (6) between the fourth fixed pulley (31) and the fifth fixed pulley (32) through the through hole respectively, and the connecting block (4) is connected and fixed with the steel rope (6); The two connecting blocks (4) are connected with the two sides of the movable end of the scissor mechanism (5) respectively.

7. A synchronized traction system for driving the deployment or folding of a folding photovoltaic assembly according to any one of claims 1 to 6, characterized in that: Further comprising a position limiter (27); The number of the position limiter (27) is two, and the two position limiters (27) are arranged at the two ends of the first support arm (2) respectively. And the two position limiters (27) are electrically connected with the controller of the double-drum winch (1).

8. A synchronized traction system for driving the deployment or folding of a folding photovoltaic assembly according to claim 7, characterized in that: Further comprising a wind speed sensor and a light sensor; The wind speed sensor and the light sensor are electrically connected with the controller of the double-drum winch (1).

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