Fixing structure for anti-islanding protection device

Abstract

The utility model discloses a fixing structure for an anti-islanding protection device, and the structure comprises a fixing frame which is composed of a first fixing plate and a second fixing plate which are perpendicular to each other, and the first fixing plate is fixedly disposed on the inner wall of a cabinet body through screws; the mounting plate is arranged on the end face of the second fixing plate and is in sliding connection with the second fixing plate through a sliding assembly, L-shaped supporting blocks are symmetrically arranged on the two sides of the end face of the mounting plate correspondingly, and the supporting block on one side is movably connected with the mounting plate through a driving assembly; the distance between the supporting blocks on the two sides is changed by moving back and forth so that the protection devices placed on the supporting blocks on the two sides can be limited and fixed. According to the utility model, the protection device can be conveniently mounted and dismounted, the mounting and dismounting time is saved, and the efficiency of mounting, dismounting, overhauling and maintaining can be further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric power equipment, and in particular relates to a fixing structure for an anti-islanding protection device. Background Art

[0002] The anti-islanding protection device is mainly used to prevent the islanding effect in the power grid. Islanding is an electrical phenomenon that occurs when a part of the power grid is disconnected from the main power grid, and this part of the power grid is completely powered by the photovoltaic system. Because islanding will endanger the safety of the public and power company maintenance personnel and the quality of power supply, anti-islanding devices must be equipped in photovoltaic power stations. When islanding occurs, the grid connection point can be quickly cut off, so that the station can be quickly disconnected from the grid side, thereby ensuring the safety of the entire power station and related maintenance personnel.

[0003] Traditional anti-islanding protection devices are usually fixed with screws when assembled into a distribution box, which makes the installation more troublesome. Moreover, when the anti-islanding protection device fails and needs to be disassembled for maintenance, multiple screws need to be removed one by one, which takes a long time and reduces the efficiency of the maintenance of the anti-islanding protection device. Utility Model Content

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the problem that the traditional anti-islanding protection device is usually fixed by screws when assembled into the distribution box, which makes the installation more troublesome. When the anti-islanding protection device fails and needs to be disassembled for maintenance, multiple screws need to be removed one by one, which takes a long time and reduces the efficiency of the maintenance of the anti-islanding protection device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A fixing structure for an anti-islanding protection device comprises a fixing frame and a mounting plate; the fixing frame comprises a first fixing plate and a second fixing plate which are perpendicular to each other, the first fixing plate being fixedly mounted on the inner wall of a cabinet by screws; the mounting plate being arranged on the end surface of the second fixing plate and being slidably connected to the second fixing plate by a sliding assembly, L-shaped support blocks being symmetrically arranged on both sides of the end surface of the mounting plate, wherein the support block on one side is movably connected to the mounting plate by a driving assembly, and is suitable for moving back and forth to change the spacing between the support blocks on both sides so as to limit and fix the protection device placed on the support blocks on both sides.

[0007] In an optional embodiment, there are four support blocks, and the four support blocks are symmetrically arranged in pairs on the end surface of the mounting plate, wherein the rear ends of the two support blocks located on the rear side are vertically connected with anti-slip plates, and the height of the anti-slip plates is consistent with the height of the support blocks.

[0008] In an optional embodiment, a straight-line guide groove is respectively recessed below the two support blocks on one side of the end surface of the mounting plate, and a movable block extending to the bottom of the guide groove is vertically connected to the bottom of the support block, and the movable block is slidably connected to the inner wall of the guide groove through a guide assembly, and one end of the movable block is horizontally connected to a movable rod, and one end of the movable rod extends to the outside of the mounting plate, and a portion of the movable rod located in the guide groove is sleeved with a telescopic spring, one end of the telescopic spring abuts against the side of the movable block, and the other end abuts against the inner wall of the guide groove.

[0009] In an optional embodiment, the guide assembly includes a slide rail and a first slider, there are two slide rails, the two slide rails are symmetrically arranged on the front and rear side walls of the guide groove, and the first slider is connected to the front and rear side walls of the movable block corresponding to the two slide rails and is slidably connected to the slide rails.

[0010] In an optional implementation, the outer sides of the movable rods at the front and rear sides are connected as one body through a handrail.

[0011] In an optional embodiment, the sliding assembly includes an inverted T-shaped slide groove and a second sliding block adapted to the slide groove, the slide groove is opened on the end face of the second fixed plate along the width direction of the second fixed plate, the second sliding block is connected to the bottom end of the mounting plate corresponding to the slide groove, and is suitable for adapting to the slide groove to drive the mounting plate to slide back and forth on the second fixed plate.

[0012] In an optional embodiment, it further includes a magnetic attraction component, which includes a connecting rod. The connecting rod is passed through the first fixing plate, and both ends of the connecting rod extend outwards by a preset distance and are connected to a magnetic attraction block.

[0013] In an optional implementation, the connecting rod is a threaded rod, a nut is embedded and fixedly installed on the first fixing plate, the threaded rod is inserted into the nut and is threadedly connected to the first fixing plate through the nut.

[0014] In an optional embodiment, the front end of the mounting plate is connected to a push-pull rod, the front end of the second fixed plate is located on both sides of the push-pull rod and is hinged with anti-sliding blocks, and the inner wall of the upper part of the anti-sliding block is in contact with the front end of the mounting plate.

[0015] In an optional embodiment, a recessed slot is provided at the front end of the mounting plate at a position corresponding to the anti-sliding block, and a block adapted to the slot is connected to the inner wall of the upper portion of the anti-sliding block at a position corresponding to the slot.

[0016] Compared with the prior art, the technical solution of the utility model has the following advantages:

[0017] 1. The utility model uses the functions of the support block, the movable block, the movable rod and the telescopic spring. The two support blocks on the same side can be pulled outwards through the movable rod, so that the distance between the support blocks on both sides is increased, which is convenient for placing the protective device on the L-shaped end faces of the four support blocks. Thereafter, the external force on the movable rod is released, and under the action of the telescopic spring, the movable block drives the support block to move in the direction close to the protective device, thereby fixing the outer limit of the protective device. When it needs to be taken out, the movable rod is pulled outwards to drive the support block away from the protective device, which is convenient for installation and disassembly of the protective device, saves installation and disassembly time, and further improves the efficiency of installation and disassembly inspection and maintenance.

[0018] 2. The utility model has the function of slidingly connecting the mounting plate on the end surface of the second fixing plate. When fixing the protective device, the mounting plate can be directly pulled outward, shortening the distance between the fixing part and the cabinet door, and avoiding the fixing frame being installed too far from the cabinet door, making it difficult to fix the protective device thereon.

[0019] 3. The utility model has a connecting rod and a magnetic adsorption block passing through the first fixing plate. The magnetic adsorption block located on the front side of the first fixing plate can tightly adsorb the rear side of the protective device, further fix the protective device, and strengthen the limiting and fixing effect of the protective device, making it less likely to loosen or shift. The magnetic adsorption block located on the rear side of the first fixing plate can further tightly adsorb the fixing frame to the inner wall of the cabinet, and combined with the screws, the fixing frame is doubly supported and fixed, which has a better stabilizing effect, and can also reduce the number of screws installed, saving installation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of the utility model when the anti-islanding protection device is fixed;

[0021] Figure 2 It is a structural schematic diagram of the utility model;

[0022] Figure 3 It is a cross-sectional structural schematic diagram of the drive assembly of the utility model;

[0023] Figure 4 It is a schematic cross-sectional structural diagram of the magnetic component of the utility model;

[0024] Wherein, the accompanying drawings are marked as follows:

[0025] 1. First fixed plate; 2. Second fixed plate; 3. Mounting plate; 4. Second slider; 5. Push-pull rod; 6. Anti-sliding block; 7. Movable rod; 8. Handrail; 9. Support block; 10. Protective device; 11. Anti-slip plate; 12. Threaded rod; 13. Magnetic adsorption block; 14. Nut; 15. Guide groove; 16. Movable block; 17. Telescopic spring. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] Combine the following Figures 1 to 4 , describing an embodiment of the utility model.

[0028] The utility model embodiment discloses a fixing structure for an anti-islanding protection device, including a fixing frame and a mounting plate 3; the fixing frame is composed of two mutually perpendicular first fixing plates 1 and second fixing plates 2, the first fixing plate 1 is fixedly mounted on the inner wall of a cabinet by screws; the mounting plate 3 is arranged on the end surface of the second fixing plate 2 and is slidably connected to the second fixing plate 2 through a sliding component, and L-shaped support blocks 9 are symmetrically arranged on both sides of the end surface of the mounting plate 3, wherein the support block 9 on one side is movably connected to the mounting plate 3 through a driving component, and is suitable for moving back and forth to change the spacing between the support blocks 9 on both sides so as to limit and fix the protection device 10 placed on the support blocks 9 on both sides.

[0029] Preferably, there are four support blocks 9, which are symmetrically arranged in pairs on the end surface of the mounting plate 3, wherein the rear ends of the two support blocks 9 located at the rear side are respectively vertically connected with anti-slip plates 11, and the height of the anti-slip plates 11 is consistent with the height of the support blocks 9. The protective device 10 can be supported and fixed from four positions by the four support blocks 9, and the protective device 10 can be pushed forward from the rear side by the anti-slip plates 11 when the mounting plate 3 is pulled outward, so as to avoid that when the mounting plate 3 is pulled outward to remove the protective device 10, only the support blocks 9 are pulled outward together with the mounting plate 3, and the relative displacement between the protective device 10 and the support blocks 9 remains in place.

[0030] Furthermore, a straight-line guide groove 15 is respectively recessed below the two support blocks 9 on one side of the end surface of the mounting plate 3, and a movable block 16 extending to the bottom end of the guide groove 15 is vertically connected to the bottom of the support block 9, and the movable block 16 is slidably connected to the inner wall of the guide groove 15 through a guide assembly, and one end of the movable block 16 is horizontally connected to a movable rod 7, and one end of the movable rod 7 extends to the outside of the mounting plate 3, and a portion of the movable rod 7 located in the guide groove 15 is sleeved with a telescopic spring 17, and one end of the telescopic spring 17 abuts against the side of the movable block 16, and the other end abuts against the inner wall of the guide groove 15.

[0031] Furthermore, the guide assembly includes a slide rail and a first slider. There are two slide rails, and the two slide rails are symmetrically arranged on the front and rear side walls of the guide groove 15. The first slider is connected to the front and rear side walls of the movable block 16 corresponding to the two slide rails and is slidably connected to the slide rails. The slide rail and the first slider can ensure that the movable block 16 moves smoothly in the guide groove 15 without shaking. Therefore, the support block 9 is not likely to shake during the left and right movement, and the stability is high.

[0032] Furthermore, the outer sides of the movable rods 7 at the front and rear sides are connected as one by a support rod 8. The front and rear movable rods 7 can be pulled outward at the same time by the support rod 8, thereby pulling the two support blocks 9 outward at the same time, saving time and improving installation efficiency.

[0033] In this embodiment, through the action of the support block 9, the movable block 16, the movable rod 7 and the telescopic spring 17, the two support blocks 9 on the same side can be pulled outward through the movable rod 16, so that the distance between the support blocks 9 on both sides is increased, which is convenient for placing the protective device 10 on the L-shaped end faces of the four support blocks 9, and then the external force on the movable rod 7 is released. Under the action of the telescopic spring 17, the movable block 16 will drive the support block 9 to move toward the protective device 10, thereby fixing the outer limit of the protective device 10. When it needs to be taken out, the movable rod 7 can be pulled outward to drive the support block 9 away from the protective device 10, which is convenient for installation and disassembly of the protective device 10, saving installation and disassembly time, and thus improving the efficiency of installation and disassembly inspection and maintenance.

[0034] In the above embodiment, four support blocks 9 are respectively distributed on the end surface of the mounting plate 3 in pairs, and the support blocks 9 are L-shaped. The protective device 10 is placed on the horizontal end surface of the support block 9. Since the support block 9 has a certain thickness, there is a certain distance between the horizontal end surface of the support block 9 and the end surface of the mounting plate 3. Therefore, a certain distance will be left between the protective device 10 placed on the horizontal end surface of the support block 9 and the mounting plate 3 to avoid the bottom end of the protective device 10 and the mounting plate 3 being too close to affect the heat dissipation effect. In order to improve the supporting effect on the protective device 10, the width of the horizontal part of the support block 9 can be increased to avoid the protective device being too small to be easily detached from the support block 9. The vertical surface of the support block 9 can limit the side of the protective device 10 from both sides. Under the action of the telescopic spring 17, the movable block 16 can be squeezed and pushed in the direction close to the protective device 10, thereby driving the support block 9 to be squeezed in the direction of the protective device 10, so that the vertical surface of the protective device 10 is tightly fitted to the side of the protective device 10 for limiting and fixing. In order to further improve the close fitting effect between the inner wall of the support block 9 and the outer wall of the protective device 10, an L-shaped rubber pad can be fitted on the inner wall where the support block 9 and the protective device 10 are fitted, so that the support block 9 is tightly pressed against the side wall of the protective device 10, and the protective device 10 is not easy to slide relative to the support block 9.

[0035] When the above embodiment is actually used, the first fixing plate 1 is first fixedly mounted on the inner wall of the cabinet by screws, thereby fixing the entire fixing frame on the inner wall of the cabinet, and then the mounting plate 3 is pulled outward, and then the support rod 8 is pulled outward. The process of pulling the support rod 8 outward will simultaneously drive the two movable rods 7 to be pulled outward, thereby simultaneously pulling the support block 9 on the same side outward. Since the support block 9 on one side is fixed, when the support block 9 on one side is pulled outward, the spacing formed between the support blocks 9 on both sides will be gradually enlarged. , until the formed spacing is larger than the width of the entire protective device 10, and then the entire protective device 10 is placed on the four support blocks 9, and then the external force on the handrail 8 is released. Under the action of the telescopic spring 17, the movable block 16 will drive the support block 9 to move in the direction of fitting the protective device 10 until the support block 9 limits and fixes the protective device 10 from the side. When the protective device 10 needs to be taken out, the handrail 8 is pulled outward to pull the support block 9 on the same side outward from the side of the protective device 10 to take out the protective device 10.

[0036] In an optional embodiment, the sliding assembly includes an inverted T-shaped slide groove and a second slider 4 adapted to the slide groove, the slide groove is opened on the end face of the second fixed plate 2 along the width direction of the second fixed plate 2, the second slider 4 is connected to the bottom end of the mounting plate 3 corresponding to the slide groove, and is suitable for adapting to the slide groove to drive the mounting plate 3 to slide back and forth on the second fixed plate 2.

[0037] In the above embodiment, a second slider 4 is connected to the bottom end of the mounting plate 3, and a T-shaped slide groove is provided on the mounting plate 3, and the second slider 4 can be inserted into the slide groove and slidably connected to the slide groove, thereby allowing the mounting plate 3 to slide back and forth relative to the second fixed plate 2, so that when fixing the protective device 10, the mounting plate 3 can be directly pulled out, shortening the distance between the fixing portion and the cabinet door, and avoiding the fixing frame being installed too far from the cabinet door, making it difficult to fix the protective device 10 thereon.

[0038] In other embodiments, in order to prevent the mounting plate 3 from detaching from the second fixed plate 2 during the outward sliding process, a partial slide groove may be opened on the end surface of the mounting plate 3, that is, both ends of the slide groove are closed, and only the top end is open, and sliding tracks are opened on the left and right side walls of the slide groove, and the second slider is connected to the rear side of the bottom end of the mounting plate 3 in an inverted T shape, and the outward protruding parts on both sides of the inverted T-shaped second slider can cooperate with the two sliding tracks in the slide groove so that the vertical part of the second slider moves back and forth in the slide groove, and since the front end of the slide groove is closed, the second slider will not slide outward and detach from the slide groove when it slides to the front end of the slide groove.

[0039] In an optional embodiment, a magnetic attraction component is further included, and the magnetic attraction component includes a connecting rod, and the connecting rod is passed through the first fixing plate 1, and the two ends of the connecting rod extend outwards by a preset distance and are connected to a magnetic attraction block 13.

[0040] In the above embodiment, there are four connecting rods, and the four connecting rods are symmetrically arranged on the first fixing plate 1 at intervals of two each, and there is a certain distance between the two ends of the connecting rod and the end surface of the first fixing plate 1, that is, the connecting rod is partially exposed on both sides of the first fixing plate after being inserted, and the two ends of the connecting rod are respectively connected with magnetic adsorption blocks 13, that is, the front side and the rear side of the first fixing plate 1 are provided with magnetic adsorption blocks 13, and the magnetic adsorption blocks 13 located on the front side of the first fixing plate 1 can tightly adsorb the rear side of the protective device 10 through the action of the magnetic adsorption blocks 13, so as to further fix the protective device 10 and strengthen the protection The limiting and fixing effect of the device 10 makes it difficult for it to loosen or shift; the magnetic adsorption block 13 located on the rear side of the first fixed plate 1 can further adsorb the fixing frame tightly to the inner wall of the cabinet, and combined with the screws, the fixing frame is doubly supported and fixed, which has a better stabilization effect, and can also reduce the number of screws installed, saving installation time. Since there is a certain distance between the magnetic adsorption block 13 and the first fixed plate 1, the distance formed between the protective device 10 and the first fixed plate 1 after adsorption can be used to dissipate heat for the protective device 10, so as to avoid the rear side of the protective device 10 being too close to the first fixed plate 1 and affecting heat dissipation.

[0041] Preferably, the connecting rod is a threaded rod 12, and a nut 14 is embedded and fixed on the first fixing plate 1, and the threaded rod 12 is inserted into the nut 14 and is screwed to the first fixing plate 1 through the nut 14. It is convenient to adjust the spacing between the magnetic adsorption blocks 13 on the front and rear sides and the first fixing plate 1. When the volume of the protective device 10 is too small and its rear side is too far away from the magnetic adsorption block 13 after placement, the threaded rod 12 can be rotated to move the magnetic adsorption block 13 on the front side forward. Similarly, when the volume of the protective device 10 is too large and occupies a large area, the threaded rod 12 can be rotated to move the magnetic adsorption block 13 on the front side backward, which is more flexible and more practical.

[0042] When the above embodiment is actually used, the mounting plate 3 is first pulled outward, and then the handrail 8 is pulled outward, so that the support blocks 9 on both sides move outward at the same time, and then the protective device 10 is placed on the end faces of the four support blocks 9, and then the handrail 8 is released. Under the action of the telescopic spring 17, the four support blocks 9 will be tightly abutted against the two sides of the protective device 10, and then the mounting plate 3 is pushed inward until the rear side of the protective device 10 is attracted by the magnetic adsorption block 13. When the protective device 10 needs to be removed, the mounting plate 3 is directly pulled out, or one hand is placed on the protective device 10 and the other hand is used to pull the mounting plate 3 out.

[0043] In an optional embodiment, the front end of the mounting plate 3 is connected to a push-pull rod 5, and the front end of the second fixed plate 2 is hinged with anti-sliding blocks 6 on both sides of the push-pull rod 5, and the inner wall of the upper part of the anti-sliding block 6 is in contact with the front end of the mounting plate 3.

[0044] Furthermore, a recessed slot is provided at the front end of the mounting plate 3 at a position corresponding to the anti-sliding block 6 , and a block adapted to the slot is connected to the inner wall of the upper portion of the anti-sliding block 6 at a position corresponding to the slot.

[0045] In the above embodiment, the mounting plate 3 can be clamped from the front by the anti-sliding block 6 to prevent the mounting plate 3 from automatically sliding outward when impacted by external force. After the mounting plate 3 slides inward, the anti-sliding block 6 is rotated upward. When the blocking block of the anti-sliding block 6 is aligned with the blocking slot, the mounting plate 3 is slightly moved forward so that the blocking block is stuck in the blocking slot. This can prevent the blocking block from loosening and rotating downward after multiple rotations. When the mounting plate 3 needs to be pulled out, the mounting plate 3 is pushed inward so that the blocking slot is disengaged from the blocking block and the blocking block can be rotated downward.

[0046] Although the present invention has been described using the above preferred embodiments, it is not intended to limit the scope of protection of the present invention. Any person skilled in the art may make various changes and modifications to the above embodiments without departing from the spirit and scope of the present invention, and the changes and modifications still fall within the scope of protection of the present invention.

Claims

1. A fixing structure for an anti-islanding protection device, characterized in that: include: The fixing frame is composed of two mutually perpendicular first fixing plates and a second fixing plate, wherein the first fixing plate is fixedly mounted on the inner wall of the cabinet by screws; The mounting plate is arranged on the end surface of the second fixed plate and is slidably connected to the second fixed plate through a sliding component. L-shaped support blocks are symmetrically arranged on both sides of the end surface of the mounting plate, and the support blocks on one side are movably connected to the mounting plate through a driving component, and are suitable for moving back and forth to change the distance between the support blocks on both sides so as to limit and fix the protective device placed on the support blocks on both sides.

2. The fixing structure for the anti-islanding protection device according to claim 1, characterized in that: There are four support blocks, which are symmetrically arranged in pairs on the end surface of the mounting plate. The rear ends of the two support blocks located on the rear side are vertically connected with anti-slip plates, and the height of the anti-slip plates is consistent with the height of the support blocks.

3. The fixing structure for the anti-islanding protection device according to claim 2, characterized in that: A straight-line guide groove is respectively recessed below the two support blocks on one side of the end surface of the mounting plate, and a movable block extending to the bottom end of the guide groove is vertically connected to the lower part of the support block, and the movable block is slidably connected to the inner wall of the guide groove through a guide assembly, and one end of the movable block is horizontally connected to a movable rod, and one end of the movable rod extends to the outside of the mounting plate, and a portion of the movable rod located in the guide groove is sleeved with a telescopic spring, one end of the telescopic spring abuts against the side of the movable block, and the other end abuts against the inner wall of the guide groove.

4. The fixing structure for the anti-islanding protection device according to claim 3, characterized in that: The guide assembly includes a slide rail and a first slider. There are two slide rails, which are symmetrically arranged on the front and rear side walls of the guide groove. The first slider is connected to the front and rear side walls of the movable block corresponding to the two slide rails and is slidably connected to the slide rails.

5. The fixing structure for the anti-islanding protection device according to claim 3, characterized in that: The outer sides of the movable rods at the front and rear sides are connected into one body through a handrail.

6. The fixing structure for the anti-islanding protection device according to claim 1, characterized in that: The sliding assembly includes an inverted T-shaped sliding groove and a second sliding block adapted to the sliding groove. The sliding groove is opened on the end surface of the second fixed plate along the width direction of the second fixed plate. The second sliding block is connected to the bottom end of the mounting plate corresponding to the sliding groove, and is suitable for adapting to the sliding groove to drive the mounting plate to slide back and forth on the second fixed plate.

7. The fixing structure for the anti-islanding protection device according to claim 1, characterized in that: It also includes a magnetic attraction component, which includes a connecting rod. The connecting rod is penetrated on the first fixing plate, and both ends of the connecting rod extend outwards with a preset spacing and are connected to magnetic adsorption blocks.

8. The fixing structure for the anti-islanding protection device according to claim 7, characterized in that: The connecting rod is a threaded rod, a nut is embedded and fixedly installed on the first fixing plate, the threaded rod is inserted into the nut and is threadedly connected to the first fixing plate through the nut.

9. The fixing structure for the anti-islanding protection device according to claim 1, characterized in that: The front end of the mounting plate is connected with a push-pull rod, the front end of the second fixing plate is located at both sides of the push-pull rod and is respectively hinged with anti-sliding blocks, and the inner wall of the upper part of the anti-sliding block is in contact with the front end of the mounting plate.

10. The fixing structure for the anti-islanding protection device according to claim 9, characterized in that: A slot is recessed at the front end of the mounting plate at a position corresponding to the anti-sliding block, and a block adapted to the slot is connected to the inner wall of the upper portion of the anti-sliding block at a position corresponding to the slot.

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