Photovoltaic support and photovoltaic power generation system

Abstract

The utility model discloses a kind of photovoltaic support and photovoltaic power generation system, it is related to photovoltaic power generation technical field.The photovoltaic support includes support frame, rotating frame and limit bolt.Rotating frame is rotatably installed on support frame, rotating frame is provided with arc plate along its rotating direction, arc plate is provided with a plurality of interval arrangement's through hole, support frame is provided with locating plate, locating plate is provided with locating hole, limit bolt is movably installed in support frame, and it is set on the side of locating plate away from arc plate, limit bolt is used to sequentially pass through locating hole and any one through hole, to fix the relative position of locating plate and arc plate.The photovoltaic support provided by the utility model can realize the quick locking after angle adjustment, save time and effort, and the locking efficiency is high, and locking effect is good, and avoid the locking failure phenomenon after long time of use, service life is longer, stable and reliable.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic power generation technology, and more specifically, to a photovoltaic bracket and a photovoltaic power generation system. Background Technology

[0002] Photovoltaic power generation is a green energy technology that converts solar radiation into direct current. With increasing environmental awareness and energy structure transformation, photovoltaic power generation has been increasingly widely used globally, becoming an important renewable energy source. In the application of adjustable photovoltaic brackets, the stability of the bracket after periodic angle adjustment needs to be ensured. Currently, brackets are generally locked with bolts. When the bracket is adjusted to the preset angle, the bolt is inserted and the nut is tightened to lock it in place. When the angle needs to be adjusted, the nut is loosened and the bolt is pulled out. However, this locking method is time-consuming and labor-intensive, resulting in low locking efficiency. Furthermore, the bolts may strip or stick together after prolonged use, leading to locking failure and a short service life.

[0003] In view of this, designing and manufacturing a photovoltaic bracket and photovoltaic power generation system with high locking efficiency and long service life is particularly important, especially in the production of photovoltaic brackets. Utility Model Content

[0004] The purpose of this utility model is to provide a photovoltaic bracket that can achieve rapid locking after angle adjustment, saving time and effort, with high locking efficiency and good locking effect, and avoiding locking failure after long-term use, with a long service life and stable reliability.

[0005] Another objective of this invention is to provide a photovoltaic power generation system that can achieve rapid locking after angle adjustment, saving time and effort, with high locking efficiency and good locking effect, and avoiding locking failure after long-term use, resulting in a long service life and stable reliability.

[0006] This utility model is achieved by the following technical solution.

[0007] A photovoltaic bracket includes a support frame, a rotating frame, and a limiting pin. The rotating frame is rotatably mounted on the support frame. The rotating frame has an arc-shaped plate along its rotation direction. The arc-shaped plate has multiple spaced through holes. The support frame has a positioning plate with positioning holes. The limiting pin is movably mounted on the support frame and is located on the side of the positioning plate away from the arc-shaped plate. The limiting pin is used to pass through the positioning hole and any one of the through holes in sequence to fix the relative position of the positioning plate and the arc-shaped plate.

[0008] Optionally, the support frame is also provided with a side plate, which is perpendicular to the positioning plate. The side plate has a limit groove, and a limit plate is provided on one side of the limit pin. The limit pin is used to rotate around its axis after passing through the positioning hole and the through hole, so that the limit plate cooperates with the limit groove.

[0009] Optionally, the bottom wall of the limiting groove is provided with a stop groove, and the limiting plate is provided with a folded edge that extends into the stop groove and cooperates with the stop groove.

[0010] Optionally, the support frame is further provided with a first baffle and a second baffle. The first baffle and the second baffle are arranged in parallel and spaced apart, and both are connected to the side plate and are perpendicular to the side plate. The first baffle and the second baffle are both located on the side of the positioning plate away from the arc plate. The limiting pin passes through the second baffle and the first baffle in sequence, and the limiting groove is located between the first baffle and the second baffle.

[0011] Optionally, the first baffle has a clearance hole and the second baffle has a clearance groove. The limiting pin passes through the clearance groove and the clearance hole in sequence. The area of ​​the limiting plate is larger than the area of ​​the clearance groove and larger than the area of ​​the clearance hole.

[0012] Optionally, the second baffle is detachably connected to both the side plate and the support frame.

[0013] Optionally, the limiting pin includes a pin head, a transmission rod, and a handle rod connected in sequence. The pin head and the transmission rod are coaxially arranged, the transmission rod is perpendicular to the handle rod, and the pin head is used to pass through the positioning hole and the through hole.

[0014] Optionally, the photovoltaic bracket also includes a limiting member, which is rotatably mounted on the support frame. The limiting member has a slot and is used to overlap the handle bar so that the handle bar engages with the slot.

[0015] Optionally, the limiting component includes a connecting plate, a snap-fit ​​plate, and a reinforcing plate connected in sequence. The connecting plate and the reinforcing plate are disposed opposite to each other on both sides of the snap-fit ​​plate and are both perpendicular to the snap-fit ​​plate. The connecting plate is rotatably connected to the support frame, and a slot is formed in the snap-fit ​​plate.

[0016] A photovoltaic power generation system includes the aforementioned photovoltaic bracket. The photovoltaic bracket includes a support frame, a rotating frame, and a limiting pin. The rotating frame is rotatably mounted on the support frame. The rotating frame has an arc-shaped plate along its rotation direction. The arc-shaped plate has multiple spaced through holes. The support frame has a positioning plate with positioning holes. The limiting pin is movably mounted on the support frame and is located on the side of the positioning plate away from the arc-shaped plate. The limiting pin is used to pass through the positioning hole and any one of the through holes in sequence to fix the relative position of the positioning plate and the arc-shaped plate.

[0017] The photovoltaic bracket and photovoltaic power generation system provided by this utility model have the following beneficial effects: The photovoltaic bracket provided by this utility model has a rotating frame rotatably mounted on a support frame. The rotating frame has an arc-shaped plate along its rotation direction, and the arc-shaped plate has multiple spaced through holes. The support frame has a positioning plate with positioning holes. A limiting pin is movably mounted on the support frame and located on the side of the positioning plate away from the arc-shaped plate. The limiting pin passes through the positioning hole and any one of the through holes in sequence to fix the relative position of the positioning plate and the arc-shaped plate. Compared with the prior art, the photovoltaic bracket provided by this utility model, due to the use of a rotating frame rotatably mounted on the support frame and a limiting pin passing through the positioning hole and any one of the through holes, can achieve rapid locking after angle adjustment, saving time and effort, with high locking efficiency and good locking effect. It also avoids locking failure after prolonged use, has a longer service life, and is stable and reliable.

[0018] The photovoltaic power generation system provided by this utility model includes a photovoltaic bracket, which can achieve rapid locking after angle adjustment, saving time and effort, with high locking efficiency and good locking effect. It also avoids locking failure after long-term use, has a long service life, and is stable and reliable. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the photovoltaic bracket provided in the first embodiment of the present invention when it is in the unlocked state; Figure 2 This is a schematic diagram of the photovoltaic support provided in the first embodiment of the present invention when it is in a locked state; Figure 3 This is a schematic diagram of the structure of the support frame in the photovoltaic bracket provided in the first embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the limiting pin in the photovoltaic bracket provided in the first embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the limiting component in the photovoltaic bracket provided in the first embodiment of this utility model; Figure 6 This is a schematic diagram of the photovoltaic support in the locked state according to the second embodiment of the present invention; Figure 7 This is a schematic diagram of the support frame in the photovoltaic bracket provided in the second embodiment of the present invention.

[0021] Icons: 100-Photovoltaic bracket; 110-Support frame; 111-Positioning plate; 1111-Positioning hole; 112-Side plate; 1121-Limiting groove; 1122-Stop groove; 113-First baffle; 1131-Leaving hole; 114-Second baffle; 1141-Leaving groove; 120-Rotating frame; 121-Arc plate; 122-Through hole; 130-Limiting pin; 131-Limiting plate; 132-Pin head; 133-Transmission rod; 134-Handle handle; 135-Folded edge; 140-Limiting component; 141-Connecting plate; 142-Snap-fit ​​plate; 143-Reinforcing plate; 144-Slot. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this utility model, it should be noted that the terms "inner," "outer," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the features in the following embodiments can be combined with each other.

[0028] First Embodiment Please refer to the reference. Figures 1 to 3 This utility model provides a photovoltaic power generation system (not shown) for photovoltaic power generation. It enables rapid locking after angle adjustment, saving time and effort, with high locking efficiency and good locking effect. It also avoids locking failure after prolonged use, has a long service life, and is stable and reliable.

[0029] It should be noted that the photovoltaic power generation system includes a photovoltaic support 100, photovoltaic modules (not shown in the figure), and a drive system (not shown in the figure). The photovoltaic modules are mounted on the photovoltaic support 100, and the drive system is connected to the photovoltaic support 100. The drive system can drive the photovoltaic modules to rotate through the photovoltaic support 100, so that the photovoltaic modules rotate with the trajectory of the sun, thereby maximizing the capture of sunlight and improving power generation efficiency.

[0030] The photovoltaic support 100 includes a support frame 110, a rotating frame 120, a limiting pin 130, and a main beam (not shown). The rotating frame 120 is rotatably mounted on the support frame 110 and sleeved on the main beam. The photovoltaic modules are mounted on the main beam. The drive system is connected to the main beam and can synchronously drive the rotating frame 120 and the photovoltaic modules to rotate through the main beam. During this process, the rotating frame 120 rotates relative to the support frame 110, and the support frame 110 supports and limits the rotating frame 120. Furthermore, the rotating frame 120 is provided with an arc-shaped plate 121 along its rotation direction, and the arc-shaped plate 121 has multiple spaced through holes 122; the support frame 110 is provided with a positioning plate 111, and the positioning plate 111 has positioning holes 1111; the limiting pin 130 is movably installed on the support frame 110 and is located on the side of the positioning plate 111 away from the arc-shaped plate 121. The limiting pin 130 is used to pass through the positioning hole 1111 and any one of the through holes 122 in sequence to fix the relative position of the positioning plate 111 and the arc-shaped plate 121. In this way, the photovoltaic bracket 100 can achieve quick locking after angle adjustment through the limiting pin 130, which saves time and effort, has high locking efficiency, good locking effect, and avoids locking failure after long-term use, resulting in a longer service life and stable reliability.

[0031] Specifically, during the angle adjustment of the photovoltaic support 100, the drive system synchronously drives the rotating frame 120 and the photovoltaic module to rotate via the main beam. When the angle of the photovoltaic module is adjusted to the correct position, the rotating frame 120 rotates relative to the support frame 110 to a certain angle. At this point, the positioning hole 1111 on the positioning plate 111 aligns with a through hole 122 on the arc plate 121. Subsequently, the limiting pin 130 passes through the positioning hole 1111 and the aligned through hole 122 in sequence to fix the relative position of the positioning plate 111 and the arc plate 121, preventing the rotating frame 120 from continuing to rotate relative to the support frame 110, thus achieving a locking function and ensuring the structural stability of the photovoltaic support 100 after the angle adjustment is completed. If it is necessary to continue adjusting the angle of the photovoltaic module, the limiting pin 130 is first pulled out of the positioning hole 1111 and the through hole 122 to achieve an unlocking function, and then the drive system continues to synchronously drive the rotating frame 120 and the photovoltaic module to rotate via the main beam.

[0032] In this embodiment, the rotating frame 120 is disposed on the top of the support frame 110, the positioning plate 111 is disposed below the arc plate 121, and the limiting pin 130 can pass through the positioning hole 1111 and any one of the through holes 122 sequentially from bottom to top in the vertical direction to fix the relative position of the positioning plate 111 and the arc plate 121.

[0033] Furthermore, the support frame 110 is also provided with a side plate 112. The side plate 112 is set perpendicular to the positioning plate 111 and is located on the side of the positioning plate 111 away from the support plate. The side plate 112 has a limiting groove 1121, and a limiting plate 131 is provided on one side of the limiting pin 130. The limiting plate 131 is set perpendicular to the axial direction of the limiting pin 130. The limiting pin 130 is used to rotate around its axial direction after passing through the positioning hole 1111 and the through hole 122, so that the limiting plate 131 cooperates with the limiting groove 1121. The side plate 112 can support the limiting pin 130 through the cooperation of the limiting plate 131 and the limiting groove 1121, so as to prevent the limiting pin 130 from falling off under its own weight, ensuring that the limiting pin 130 is in the state of passing through the positioning hole 1111 and the through hole 122, thereby improving the locking effect.

[0034] Optionally, the support frame 110 is further provided with a first baffle 113 and a second baffle 114. The first baffle 113 and the second baffle 114 are arranged parallel to each other and are both connected to the side plate 112 and are both arranged perpendicular to the side plate 112. The first baffle 113 and the second baffle 114 are both located on the side of the positioning plate 111 away from the arc plate 121. The limiting pin 130 is arranged to pass through the second baffle 114 and the first baffle 113 in sequence. The limiting groove 1121 is arranged between the first baffle 113 and the second baffle 114. The first baffle 113 and the second baffle 114 work together to limit the limiting pin 130 and ensure that the limiting pin 130 can only move in the vertical direction.

[0035] Specifically, the first baffle 113 has a clearance hole 1131, and the second baffle 114 has a clearance groove 1141. The limiting pin 130 is arranged to pass through the clearance groove 1141 and the clearance hole 1131 in sequence. The limiting plate 131 is arranged parallel to the first baffle 113 and the second baffle 114. The area of ​​the limiting plate 131 is larger than the area of ​​the clearance groove 1141 and larger than the area of ​​the clearance hole 1131. The first baffle 113 and the second baffle 114 work together to stop and limit the limiting plate 131, so that the limiting plate 131 can only move between the first baffle 113 and the second baffle 114, thereby limiting the limiting pin 130. When the limiting pin 130 moves to the upper limit position, the limiting plate 131 abuts against the first baffle 113. The first baffle 113 limits the limiting pin 130 through the limiting plate 131 to prevent the limiting pin 130 from continuing to move upward. At this time, the limiting pin 130 passes through the positioning hole 1111 and the through hole 122. When the limiting pin 130 moves to the lower limit position, the limiting plate 131 abuts against the second baffle 114. The second baffle 114 supports and limits the limiting pin 130 through the limiting plate 131 to prevent the limiting pin 130 from continuing to move downward. At this time, the limiting pin 130 completely exits the positioning hole 1111 and the through hole 122. In this way, when the limit pin 130 is in the locked state, the side plate 112 supports the limit pin 130 through the cooperation of the limit plate 131 and the limit groove 1121. When the limit pin 130 is in the unlocked state, the second baffle 114 supports the limit pin 130 to prevent the limit pin 130 from falling downward and detaching from the support frame 110 under its own weight.

[0036] In this embodiment, the second baffle 114 is detachably connected to both the side plate 112 and the support frame 110 to facilitate the installation of the limiting pin 130. Specifically, during the installation of the limiting pin 130, the limiting pin 130 is first passed sequentially through the clearance hole 1131 of the first baffle 113 and the positioning hole 1111 of the positioning plate 111. Then, the second baffle 114 is connected to the side plate 112 and the support frame 110, so that the limiting pin 130 enters the clearance groove 1141 of the second baffle 114, and the limiting plate 131 is positioned between the first baffle 113 and the second baffle 114. Specifically, the second baffle 114 is bolted to both the side plate 112 and the support frame 110.

[0037] Please refer to Figure 4The limiting pin 130 includes a pin head 132, a transmission rod 133, and a handle 134 connected in sequence. A limiting plate 131 is disposed on one side of the pin head 132. The pin head 132 and the transmission rod 133 are coaxially arranged, and the transmission rod 133 is perpendicular to the handle 134. The pin head 132 is used to pass through the positioning hole 1111 and the through hole 122. The operator can rotate the entire limiting pin 130 by rotating the handle 134 so that the limiting plate 131 can engage with the limiting groove 1121.

[0038] Please refer to the reference. Figure 2 and Figure 5 Optionally, the photovoltaic bracket 100 also includes a limiting member 140. The limiting member 140 is rotatably mounted on the support frame 110. The limiting member 140 has a slot 144 and is used to engage with the handle 134 so that the handle 134 engages with the slot 144 to prevent the handle 134 from continuing to rotate. This prevents the limiting pin 130 from rotating unexpectedly under external wind or vibration, and ensures the stability of the engagement between the limiting plate 131 and the limiting groove 1121.

[0039] The limiting member 140 includes a connecting plate 141, a snap-fit ​​plate 142, and a reinforcing plate 143 connected in sequence. The connecting plate 141 and the reinforcing plate 143 are disposed opposite to each other on both sides of the snap-fit ​​plate 142, and are both perpendicular to the snap-fit ​​plate 142. The connecting plate 141, the snap-fit ​​plate 142, and the reinforcing plate 143 are combined to form a U-shape. Specifically, the connecting plate 141 is rotatably connected to the support frame 110, and the connecting plate 141 can rotate relative to the support frame 110. The support frame 110 can limit the connection plate 141. A slot 144 is formed in the snap-fit ​​plate 142, and the reinforcing plate 143 is used to improve the structural strength of the entire limiting member 140.

[0040] The photovoltaic bracket 100 provided in this embodiment of the utility model has a rotating frame 120 rotatably mounted on a support frame 110. The rotating frame 120 is provided with an arc-shaped plate 121 along its rotation direction. The arc-shaped plate 121 has a plurality of spaced through holes 122. The support frame 110 is provided with a positioning plate 111. The positioning plate 111 has a positioning hole 1111. A limiting pin 130 is movably mounted on the support frame 110 and is located on the side of the positioning plate 111 away from the arc-shaped plate 121. The limiting pin 130 is used to pass through the positioning hole 1111 and any one of the through holes 122 in sequence to fix the relative position of the positioning plate 111 and the arc-shaped plate 121. Compared with existing technologies, the photovoltaic bracket 100 provided by this utility model, due to its rotatable rotating frame 120 mounted on the support frame 110 and the limiting pin 130 passing through the positioning hole 1111 and any one of the through holes 122, can achieve quick locking after angle adjustment, saving time and effort, with high locking efficiency and good locking effect. It also avoids locking failure after prolonged use, resulting in a longer service life and greater stability and reliability. This makes the photovoltaic power generation system stable and reliable with high power generation efficiency.

[0041] Second Embodiment Please refer to the reference. Figure 6 and Figure 7 This utility model embodiment provides a photovoltaic bracket 100. Compared with the first embodiment, the difference in this embodiment lies in the different anti-rotation structure.

[0042] In this embodiment, the photovoltaic bracket 100 no longer has a limiting member 140, meaning the photovoltaic bracket 100 no longer uses the limiting member 140 to limit the limiting pin 130 to prevent accidental rotation of the limiting pin 130. Instead, a stop groove 1122 is formed on the bottom wall of the limiting groove 1121, and the limiting plate 131 has a folded edge 135 that extends into and engages with the stop groove 1122. Specifically, the folded edge 135 is perpendicular to the limiting plate 131. Through the engagement of the folded edge 135 and the stop groove 1122, the limiting pin 130 can be prevented from rotating unexpectedly under external wind or vibration, ensuring the stability of the engagement between the limiting plate 131 and the limiting groove 1121.

[0043] The photovoltaic bracket 100 provided in this embodiment has the same beneficial effects as the first embodiment, and will not be repeated here.

[0044] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A photovoltaic support structure, characterized in that, The device includes a support frame, a rotating frame, and a limiting pin. The rotating frame is rotatably mounted on the support frame. The rotating frame has an arc-shaped plate along its rotation direction. The arc-shaped plate has multiple spaced through holes. The support frame has a positioning plate with positioning holes. The limiting pin is movably mounted on the support frame and is located on the side of the positioning plate away from the arc-shaped plate. The limiting pin is used to pass through the positioning hole and any one of the through holes in sequence to fix the relative position of the positioning plate and the arc-shaped plate. The support frame is also provided with a side plate, which is perpendicular to the positioning plate. The side plate has a limiting groove. A limiting plate is provided on one side of the limiting pin. The limiting pin is used to rotate around its axis after passing through the positioning hole and the through hole, so that the limiting plate cooperates with the limiting groove.

2. The photovoltaic support according to claim 1, characterized in that, The bottom wall of the limiting groove is provided with a stop groove, and the limiting plate is provided with a folded edge, which extends into the stop groove and cooperates with the stop groove.

3. The photovoltaic support according to claim 1, characterized in that, The support frame is also provided with a first baffle and a second baffle. The first baffle and the second baffle are arranged in parallel and spaced apart, and are both connected to the side plate and are both perpendicular to the side plate. The first baffle and the second baffle are both located on the side of the positioning plate away from the arc plate. The limiting pin passes through the second baffle and the first baffle in sequence, and the limiting groove is located between the first baffle and the second baffle.

4. The photovoltaic support according to claim 3, characterized in that, The first baffle has a clearance hole, and the second baffle has a clearance groove. The limiting pin passes through the clearance groove and the clearance hole in sequence. The area of ​​the limiting plate is larger than the area of ​​the clearance groove and larger than the area of ​​the clearance hole.

5. The photovoltaic support according to claim 3, characterized in that, The second baffle is detachably connected to both the side plate and the support frame.

6. The photovoltaic support according to claim 1, characterized in that, The limiting pin includes a pin head, a transmission rod, and a handle rod connected in sequence. The pin head and the transmission rod are coaxially arranged, the transmission rod is perpendicular to the handle rod, and the pin head is used to pass through the positioning hole and the through hole.

7. The photovoltaic support according to claim 6, characterized in that, The photovoltaic bracket also includes a limiting member, which is rotatably mounted on the support frame. The limiting member has a slot and is used to overlap the handle bar so that the handle bar cooperates with the slot.

8. The photovoltaic support according to claim 7, characterized in that, The limiting component includes a connecting plate, a snap-fit ​​plate, and a reinforcing plate connected in sequence. The connecting plate and the reinforcing plate are disposed opposite to each other on both sides of the snap-fit ​​plate and are both perpendicular to the snap-fit ​​plate. The connecting plate is rotatably connected to the support frame, and the slot is formed in the snap-fit ​​plate.

9. A photovoltaic power generation system, characterized in that, Including the photovoltaic bracket as described in any one of claims 1-8.

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