Insulation protection device for power grid

Abstract

The insulation protection device comprises a base internally provided with an inner cavity, shaft rods vertically penetrating and extending to the position above the base are rotationally installed at the four top corners of the inner bottom wall of the inner cavity correspondingly, and an adjusting device used for driving the four shaft rods to synchronously rotate is arranged in the inner cavity; a first stand column, a second stand column, a third stand column and a fourth stand column which vertically extend upwards are sequentially fixed to the top ends of the four shaft rods, protective fence plates are fixed to the side portions of the first stand column, the second stand column, the third stand column and the fourth stand column, and through small hollowed-out grooves are evenly distributed in the protective fence plates. Under the condition that parts do not need to be dismantled, space can be reserved to facilitate maintenance and overhaul of the transformer, time and labor are saved, operation is easy and convenient, space on the four sides of the transformer can be reserved at the same time through word adjustment of the insulation protection device, more working time is saved while the labor intensity of workers is greatly reduced, and the working efficiency is improved. And the maintenance and overhaul efficiency is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power grid system auxiliary devices, and in particular to an insulation protection device for a power grid. Background Art

[0002] The power grid system is a system that transmits electric energy from power plants to end users through facilities such as power generation facilities, high-voltage transmission networks, substations, and low-voltage distribution networks. The power grid system is the infrastructure that supports the power demand of modern society and provides safe and reliable power supply services. Transformers are electrical equipment that play a vital role in the power grid system. Transformers are used to change the voltage level of alternating current. They are usually composed of two or more coils. Through the principle of electromagnetic induction, the voltage at the input end is converted into the voltage required at the output end, helping the power grid system to achieve efficient energy conversion during power transmission and distribution.

[0003] Usually, a protective fence needs to be set up around the power grid transformer to prevent unauthorized personnel or other animals from entering the transformer area and causing accidents. At the same time, the fence can also prevent animals from entering the transformer area to prevent them from damaging the equipment or causing failures. Existing transformer protective fences are usually composed of multiple parts, and the parts are assembled into a whole by fastening devices such as fastening screws. A large number of parts need to be handled during installation and disassembly, which is easy to cause confusion and misassembly, increasing the difficulty of operation. In addition, special disassembly and assembly tools are required, which makes the disassembly and assembly process extremely inconvenient and is not conducive to the inspection and maintenance of the transformer.

[0004] In addition, when the transformer is overhauled or maintained, the transformer parts need to be removed, and the space between the fence and the transformer is limited. In order to ensure that the transformer parts can be removed smoothly, the guardrail on the same side needs to be removed. However, only one side of the fence can be removed each time, and the space left is still limited. It cannot adapt to the situation of removing more transformer parts, and the guardrails on all four sides can only be removed, which undoubtedly increases the workload, is time-consuming and labor-intensive, and inefficient. Summary of the invention

[0005] The purpose of the present invention is to provide an insulation protection device for a power grid which is easy to disassemble and assemble and has good protection effect to solve the technical problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions.

[0007] The four shafts are rotatably mounted at the four top corners of the bottom wall of the inner cavity, and shafts that are vertically extended to the top of the base are respectively installed. An adjusting device is provided in the inner cavity to drive the four shafts to rotate synchronously. The top ends of the four shafts are respectively fixed with a first column, a second column, a third column and a fourth column that are vertically extended upward. The sides of the first column, the second column, the third column and the fourth column are all fixed with protective fence plates, and the protective fence plates are evenly distributed with small through-going hollow grooves. When the adjusting device drives the four shafts to rotate forward at the same time, the four protective fence plates can be driven to rotate synchronously and gradually gather toward the middle until the four protective fence plates are parallel to the four side surfaces of the base one by one, and a protective space surrounding the transformer is formed between the four protective fence plates. When the adjusting device drives the four shafts to rotate in the opposite direction at the same time, the four protective fence plates can be driven to rotate synchronously, and the four protective fence plates swing to the periphery and unfold to achieve an open state.

[0008] It can be seen that the insulation protection device can drive the protective fence plates on the four sides to move synchronously by adjusting the four shafts by rotating them forward and reversely. When the four protective fence plates gather toward the middle at the same time, a protective space is formed to protect the transformer. When the four protective fence plates are expanded to the periphery at the same time, they are opened. As a result, the insulation protection device can make space to facilitate the maintenance and inspection of the transformer without removing parts, which saves time and effort and is simple to operate.

[0009] By working the adjusting device, the four protective fence panels can be driven to move synchronously at the same time, and then the word adjustment can realize the simultaneous opening and closing of the four protective fence panels. Compared with the traditional technology, the word adjustment of this insulation protection device can make room for the four sides of the transformer at the same time, which greatly reduces the labor intensity of the staff, saves more working time, and effectively improves the efficiency of maintenance and inspection.

[0010] Preferably, a side mounting box is fixed to one side of the base, and a side slot communicating with the side mounting box is provided on the side wall of the base. The adjusting device comprises a rotating shaft, a second sprocket, a chain, a driving mechanism and four first sprockets. The rotating shaft is rotatably arranged in the inner cavity, the second sprocket is fixedly sleeved on the rotating shaft, the driving mechanism is arranged in the inner cavity, the rotating shaft, the second sprocket, the chain and the driving mechanism partially extend into the side slot, the four first sprockets are fixed on the four shafts one by one, the second sprocket and the four first sprockets are jointly sleeved with a chain, and the driving mechanism is used to drive the rotating shaft for rotation adjustment.

[0011] Preferably, a guide seat is fixed on the bottom wall of the inner cavity, the guide seat extends into the side mounting box and is fixedly connected to the bottom wall of the side mounting box, a guide groove is provided on the guide seat, a threaded rod is rotatably installed in the guide groove, one end of the threaded rod extends through to the outside of the guide seat and is fixed with a twist handle, a nut seat is limitedly slidably installed in the guide groove, the nut seat is threadedly mounted in the threaded rod, a mounting seat is fixed on the top of the nut seat, a rotating shaft is rotatably installed on the mounting seat, and a driving mechanism is arranged above the mounting seat.

[0012] Preferably, the driving mechanism includes a worm, a driving motor, a worm wheel and a pair of brackets, the two brackets are fixed on the upper surface of the mounting seat, the worm is rotatably mounted on the two brackets, the driving motor is fixed on the mounting seat, and the output shaft is fixedly connected to one end of the worm, and the worm wheel is fixedly sleeved on the outside of the rotating shaft and meshes with the worm.

[0013] Preferably, triangular protective plates are fixed to the top of the first column and the third column respectively. When the four protective fence plates gather toward the middle to form a protective space, the two triangular protective plates are combined to form a whole blocking plate for blocking the top opening of the protective space.

[0014] Preferably, the edges of the two triangular protective plates that are close to each other are provided with semicircular grooves. When the two triangular protective plates are matched to form a whole sealing plate, the two semicircular grooves are matched to form a full-circular bayonet. A mounting cylinder formed by two arc-shaped plates is installed in the full-circular bayonet. A support body is installed in the mounting cylinder. A plurality of vertically penetrating guide grooves are evenly distributed on the outer peripheral surface of the support body around its axis, and a limiting cavity for the transformer power transmission line to pass through is formed between the guide groove and the inner wall of the arc-shaped plate.

[0015] Preferably, a snap-in groove is provided on the outer wall of the arc plate. When the two arc plates are matched, the two snap-in grooves form a whole annular groove. The whole circular snap-in opening formed by the two triangular protective plates is matched and clamped in the annular groove. Clamping rods are respectively fixed on the inner walls of the two arc plates, and clamping holes are provided on both sides of the outer wall of the support body. The clamping rods can be matched and inserted into the clamping holes.

[0016] Preferably, the side of the side mounting box is provided with an operating port communicating with the interior thereof, a receiving groove is provided on one of the side walls of the operating port, and an intercepting plate for blocking the operating port is slidably installed in the receiving groove.

[0017] Preferably, the insulation protection device for the power grid also includes a lock body, a first fastener with a first through hole is fixed on the interception plate, and a second fastener with a second through hole is fixed on the outer surface of the side mounting box. When the interception plate blocks the operating port, the lock body is arranged through the first through hole and the second through hole to achieve locking.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows.

[0019] The present invention can drive the protective fence plates on the four sides to move synchronously by adjusting the four shaft rods by rotating them forward and reversely. When the four protective fence plates gather toward the middle at the same time, a protective space is formed to protect the transformer. When the four protective fence plates are expanded toward the periphery at the same time, they are opened. As a result, the insulating protection device can make space to facilitate the maintenance and inspection of the transformer without removing parts, thereby saving time and effort and being simple and convenient to operate.

[0020] The present invention works through the adjustment device, which can drive the four protective fence panels to move synchronously at the same time, and then the four protective fence panels can be opened and closed at the same time by single-word adjustment. Compared with traditional technologies, the single-word adjustment of the insulation protection device can simultaneously free up space on the four sides of the transformer, which greatly reduces the labor intensity of the staff, saves more working time, and effectively improves the efficiency of maintenance and inspection.

[0021] The present invention pinches the twist handle and screws the threaded rod, and the rotating threaded rod thread drives the nut seat to slide in the guide groove. Under the connection action of the mounting seat, the rotating shaft and the second sprocket can be driven to move synchronously, thereby restraining the chain from being tightened, realizing the chain tightening, and keeping the chain at an appropriate tension, so as to improve work efficiency and extend service life, thereby ensuring that the adjustment of the protective fence plate of the device can be continuously and effectively operated normally.

[0022] When the four protective fence panels of the present invention gather toward the middle and form a protective space, the two triangular protective panels move synchronously and combine to form a whole blocking panel that blocks the top of the protective space. Compared with traditional protective fences, the transformer can be protected from the top to prevent birds from flying into the protective space from above and affecting the operation of the transformer, thereby achieving better protection. In addition, when the protective fence panels are opened, the two triangular protective panels follow the synchronous movement to make room for the space above the transformer, which is convenient for inspection and maintenance. The opening and closing movement of the two triangular protective panels does not require an additional power source, thereby reducing the investment in equipment costs.

[0023] The present invention places the high and low voltage transmission lines of the transformer in a limiting cavity, and then aligns two arc plates on the outside of a support body. The installation cylinder formed by the two arc plates can effectively limit the transmission line in the limiting cavity outside the support body to prevent it from falling out, ensure that the transmission lines are separated from each other, and avoid short circuits caused by contact. In addition, the support body and the arc plates are made of insulating materials, thereby providing insulation protection for the transmission line at the same time, and the practicality is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the insulation protection device in the present invention; Figure 2 It is a schematic diagram of the protection space structure in the present invention; Figure 3 It is a plan view of the overall structure of the present invention; Figure 4 It is a schematic diagram of the local structure in the inner cavity of the present invention; Figure 5 It is a schematic diagram of the local structure of the regulating device in the present invention; Figure 6 It is a detailed structural diagram of the driving mechanism in the present invention; Figure 7 It is a schematic cross-sectional view of a local structure of a guide seat in the present invention; Figure 8 It is a schematic diagram of assembling the triangular protection plate and the arc plate in the present invention; Fig. 9 It is a schematic diagram of the two triangular protection plates in the present invention; Fig.10 It is a schematic diagram of the two arc-shaped plates in the present invention; Fig.11 It is a schematic diagram of the coordination between the arc plate and the supporting structure in the present invention; Fig.12 It is a schematic diagram of the cross-sectional structure of the curved plate and the support body in the present invention; Fig.13 for Figure 5 A schematic diagram of the structure enlargement in the middle; Fig.14 The schematic diagram of the structure of the protective fence panel in the present invention is opened.

[0025] In the figure: 01, inner cavity; 02, protection space; 1, base; 101, side notch; 11, side mounting box; 1101, operation port; 111, storage slot; 112, interception plate; 113, first fastener; 1131, first lead hole; 114, second fastener; 1141, second lead hole; 115, lock body; 2, shaft; 21, first column; 22, second column; 23, third column; 24, fourth column; 25, protective fence plate; 251, small hollow groove; 3, adjustment device; 31, first Sprocket; 32, rotating shaft; 321, guide seat; 322, guide groove; 323, threaded rod; 3231, twist handle; 324, nut seat; 325, mounting seat; 33, second sprocket; 34, chain; 35, driving mechanism; 351, bracket; 352, worm; 353, driving motor; 354, worm wheel; 4, triangular protective plate; 41, semicircular groove; 42, full circular bayonet; 5, arc plate; 51, clamping groove; 52, clamping rod; 6, supporting body; 601, clamping hole; 61, threading groove; 62, limiting cavity. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-Figure 13 The present invention provides an insulation protection device for a power grid, comprising a base 1 with an inner cavity 01 inside, the base 1 is preset on the ground where the transformer is installed, the transformer is centrally installed on the upper surface of the base 1, and shafts 2 that vertically penetrate and extend to the top of the base 1 are rotatably installed at the four top corners of the inner bottom wall of the inner cavity 01, and an adjustment device 3 is provided in the inner cavity 01 for driving the four shafts 2 to rotate synchronously, and the tops of the four shafts 2 are successively fixed with a first column 21, a second column 22, a third column 23 and a fourth column 24 that extend vertically upward, and the sides of the first column 21, the second column 22, the third column 23 and the fourth column 24 are fixed with a protective fence plate 25, which is used to work by the adjustment device 3 The four adjusting devices 3 are driven to rotate forward synchronously at the same time. Under the fixed connection of the first column 21, the second column 22, the third column 23 and the fourth column 24, the four protective fence plates 25 are driven to move synchronously. The four protective fence plates 25 can gradually gather toward the middle. When the four protective fence plates 25 are respectively parallel to the four side surfaces of the base 1, the adjusting device 3 stops working, and the four protective fence plates 25 form a protective space 02 for accommodating the transformer. The four protective fence plates 25 are then used to provide protection for the transformer from four sides. In addition, the protective fence plates 25 are evenly distributed with small hollow grooves 251, which can ensure the internal and external air circulation effect, which is beneficial to the heat dissipation of the transformer.

[0028] When the adjusting device 3 drives the four shafts 2 to rotate synchronously in opposite directions at the same time, the four protective fence plates 25 can be driven to rotate synchronously by utilizing the fixed connection function of the first column 21, the second column 22, the third column 23 and the fourth column 24. Fig.14 As shown, the four protective fence panels 25 are swung outward and expanded, eliminating the formed protective space 02, achieving an open state, thereby freeing up space on the four sides of the transformer to facilitate maintenance and repair of the transformer by staff.

[0029] The present invention can drive the protective fence panels 25 on the four sides to move synchronously by adjusting the four shafts 2 by rotating them forward and reversely. When the four protective fence panels 25 gather toward the middle at the same time, a protective space 02 is formed to protect the transformer. When the four protective fence panels 25 are simultaneously expanded toward the periphery, they are opened, thereby making room for the maintenance and inspection of the transformer without removing parts, thereby saving time and effort and being simple and convenient to operate.

[0030] Secondly, by working the adjustment device 3, the four protective fence panels 25 can be driven to move synchronously at the same time, and then the word adjustment can realize the simultaneous opening and closing of the four protective fence panels 25. Compared with the traditional technology, the word adjustment of the insulation protection device can make room for the four sides of the transformer at the same time, which greatly reduces the labor intensity of the staff, saves more working time, and effectively improves the efficiency of maintenance and inspection.

[0031] See also Figure 4 , Figure 5 , Figure 6 and Figure 7 A side mounting box 11 is fixed to one side of the base 1, and a side notch 101 penetrating the side mounting box 11 is provided on the side wall of the base 1. The adjusting device 3 includes a rotating shaft 32, a second sprocket 33, a chain 34, a driving mechanism 35 and four first sprockets 31. The rotating shaft 32 is rotatably arranged in the inner cavity 01, and the second sprocket 33 is fixedly sleeved on the rotating shaft 32. The driving mechanism 35 is arranged in the inner cavity 01. The rotating shaft 32, the second sprocket 33, the chain 34 and the driving mechanism 35 partially extend into the side notch 101, and the four first sprockets 31 are provided on the side wall of the base 1. The second sprocket 33 and the four first sprockets 31 are fixed on the four shafts 2 in a one-to-one correspondence. The chain 34 is mounted on the second sprocket 33 and the four first sprockets 31. The driving mechanism 35 drives the rotating shaft 32 to rotate and adjust. The driving mechanism 35 drives the rotating shaft 32 to rotate forward and reversely. The rotating shaft 32 drives the second sprocket 33 to rotate synchronously. The second sprocket 33 pulls the chain 34 to move, thereby driving the four first sprockets 31 to rotate respectively, and then can drive the four shafts 2 to rotate synchronously, providing drive for the opening and closing of the protective fence plate 25.

[0032] After working for many times or for a long time, the chain 34 will become loose due to the influence of various external factors such as friction, vibration, load, etc., resulting in insufficient tension of the chain 34, and even the risk of chain derailment, affecting normal adjustment work. To solve this problem, please refer to Figure 2 Figure 4 and Figure 5A guide seat 321 is fixed on the inner bottom wall of the inner cavity 01 of the present invention, and the guide seat 321 extends into the side mounting box 11 and is fixedly connected to the inner bottom wall of the side mounting box 11. A guide groove 322 is provided on the guide seat 321, and a threaded rod 323 is rotatably installed in the guide groove 322. One end of the threaded rod 323 extends through and extends to the outside of the guide seat 321 and is fixed with a twist handle 3231. A nut seat 324 is slidingly installed in the guide groove 322. The nut seat 324 is threadedly matched and mounted in the threaded rod 323. A mounting seat 325 is fixed on the top of the nut seat 324. The rotating shaft 32 is rotatably installed on the mounting seat 325, and the driving mechanism 35 is arranged above the mounting seat 325.

[0033] Specifically, by pinching the twist handle 3231 and screwing the threaded rod 323, the rotating threaded rod 323 thread-drives the nut seat 324 to slide in the guide groove 322. Under the connection action of the mounting seat 325, the rotating shaft 32 and the second sprocket 33 can be driven to move synchronously, thereby restraining the chain 34 from being tightened, realizing the tightening of the chain 34, and keeping the chain 34 at an appropriate tension, so as to improve work efficiency and extend service life, thereby ensuring that the adjustment of the protective fence plate 25 of the device can continue to operate effectively and normally.

[0034] See also Figure 5 and Figure 6 The driving mechanism 35 includes a worm 352, a driving motor 353, a worm wheel 354 and a pair of brackets 351. The two brackets 351 are fixed on the upper surface of the mounting seat 325. The worm 352 is rotatably mounted on the two brackets 351. The driving motor 353 is fixed on the mounting seat 325, and the output shaft is fixedly connected to one end of the worm 352. The worm wheel 354 is fixedly sleeved on the outside of the rotating shaft 32 and meshes with the worm 352 accordingly. When the driving motor 353 works, its output shaft drives the worm 352 to rotate. The rotating worm 352 can mesh with the driving worm wheel 354 and drive the rotating shaft 32 to rotate, providing drive for the rotating shaft 32 and the second sprocket 33 to rotate and pull the chain 34 to operate. In addition, the bracket 351, the worm 352 and the driving motor 353 are arranged on the mounting seat 325 to ensure that they can move synchronously with the rotating shaft 32 to avoid relative movement between the worm 352 and the worm wheel 354 and affect normal driving.

[0035] In addition, a power cord (not shown in the figure) is also connected to the drive motor 353. The power cord is stored in the side mounting box 11 when not in use. When the protective fence panel 25 needs to be adjusted, the power cord is inserted into the interface on the mobile power supply carried by the staff to power the drive motor 353, thereby ensuring that the entire device can be adjusted normally.

[0036] See also Figure 1 , Figure 8 and Fig. 9A triangular protective plate 4 is fixed on the top of the first column 21 and the third column 23 respectively. When the four protective fence panels 25 gather toward the middle and form a protective space 02, the two triangular protective plates 4 are combined to form a whole blocking plate for blocking the top opening of the protective space 02. By fixing semicircular grooves 41 on the top of the first column 21 and the third column 23 respectively, when the four protective fence panels 25 gather toward the middle and form a protective space 02, the two triangular protective plates 4 move synchronously and combine to form a whole blocking plate for blocking the top of the protective space 02. Compared with traditional protective fences, it can provide protection for the transformer from the top to prevent birds from flying into the protective space 02 from above and affecting the operation of the transformer, and the protection effect is better. In addition, when the protective fence panels 25 are opened, the two triangular protective plates 4 follow the synchronous movement to make room for the space above the transformer, which is convenient for inspection and maintenance. The opening and closing movements of the two triangular protective plates 4 do not require an additional power source, thereby reducing the investment in equipment costs.

[0037] See also Figure 8 , Fig. 9 , Fig.10 , Fig.11 and Fig.12 The edges of the two triangular protective plates 4 that are close to each other are both provided with semicircular grooves 41. When the two triangular protective plates 4 are matched to form a whole sealing plate, the two semicircular grooves 41 are matched to form a full circular bayonet 42. A mounting cylinder formed by matching two arc plates 5 is installed in the full circular bayonet 42. A support body 6 is installed in the mounting cylinder. The outer peripheral surface of the support body 6 is uniformly provided with a plurality of vertically penetrating guide grooves 61 around its axis. A guide groove 61 and the inner wall of the arc plate 5 form a guide groove for the transformer transmission line to pass through. The limiting cavity 62 is used to place the high and low voltage transmission lines of the transformer in the limiting cavity 62, and then the two arc plates 5 are matched on the outside of the support body 6. The installation cylinder formed by the two arc plates 5 can effectively limit the transmission line in the limiting cavity 62 outside the support body 6 to prevent it from falling out, thereby ensuring that the transmission lines are separated from each other to avoid short circuits caused by contact. In addition, the support body 6 and the arc plates 5 are made of insulating materials, thereby providing insulation protection for the transmission line at the same time, and the practicability is high.

[0038] See also Figure 2 Figure 4 and Figure 5The outer wall of the arc plate 5 is provided with a card slot 51. When the two arc plates 5 are matched, the two card slots 51 form an entire annular groove, and the full circular card slots 42 formed by the two triangular protective plates 4 are matched and stuck in the annular groove. During assembly, the full circular card slots 42 formed by the two triangular protective plates 4 are used to match and stick in the card slots 51 on the two matched arc plates 5 to realize the assembly of the arc plate 5 and the triangular protective plate 4 without setting additional fasteners. The inner walls of the two arc plates 5 are respectively fixed with card rods 52, and card holes 601 are provided on both sides of the outer wall of the support body 6. The card rods 52 can be matched and inserted into the card holes 601. When the two arc plates 5 are matched, the card rods 52 are respectively inserted into the card holes 601 on both sides of the support body 6 to realize the assembly of the arc plate 5 and the support body 6. Similarly, there is no need to set additional fasteners, which not only saves the investment in material costs, but also makes the disassembly and assembly process convenient and quick.

[0039] See also Figure 4 , Figure 5 and Fig.13 The side of the side mounting box 11 is provided with an operation port 1101 communicated with the interior thereof, and a receiving groove 111 is provided on one of the side walls of the operation port 1101, and an intercepting plate 112 for blocking the operation port 1101 is slidably installed in the receiving groove 111. By pulling the intercepting plate 112 toward one side of the receiving groove 111 and sliding the intercepting plate 112 into the receiving groove 111, the blocking of the operation port 1101 can be cancelled, thereby freeing up space for the operation port 1101, which is convenient for the staff to operate. By sliding the intercepting plate 112 out of the receiving groove 111, the operation port 1101 can be blocked as a whole, thereby achieving a protective effect.

[0040] The insulation protection device for the power grid also includes a lock body 115. A first fastener 113 with a first through hole 1131 is fixed on the intercepting plate 112. A second fastener 114 with a second through hole 1141 is fixed on the outer surface of the side mounting box 11. When the intercepting plate 112 blocks the operation port 1101, the lock body 115 is arranged through the first through hole 1131 and the second through hole 1141 to achieve locking. When the intercepting plate 112 is slid out and the operation port 1101 is blocked, the lock body 115 is arranged through the first through hole 1131 and the second through hole 1141 to achieve locking. A through hole 1131 and a second through hole 1141 are used to lock the interception plate 112, which can prevent unauthorized persons from inserting their hands into the side mounting box 11 to operate or damage it, thereby further improving the protection effect on the transformer. In addition, the first fastener 113 is installed on the interception plate 112 as a locking fastening component, and can also play a role of limiting blocking to prevent the interception plate 112 from excessively moving into the storage slot 111. In addition, by pinching the first fastener 113, it is convenient to exert force to slide and adjust the interception plate 112, thereby achieving multiple goals at one stroke.

[0041] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An insulation protection device for a power grid, comprising a base (1) having an inner cavity (01), characterized in that: At the four top corners of the inner bottom wall of the inner cavity (01), shafts (2) are rotatably mounted and vertically penetrate the inner bottom wall to extend to the top of the base (1). An adjusting device (3) is provided in the inner cavity (01) for driving the four shafts (2) to rotate synchronously. A first column (21), a second column (22), a third column (23) and a fourth column (24) are fixed in sequence to the top ends of the four shaft rods (2), and the first column (21), the second column (22), the third column (23) and the fourth column (24) are fixed to the sides of the first column (21), the second column (22), the third column (23) and the fourth column (24), and the protective fence plates (25) are uniformly provided with through-going small hollow grooves (251); When the adjusting device (3) drives the four shafts (2) to rotate forward at the same time, the four protective fence plates (25) can be driven to rotate synchronously and gradually gather toward the middle until the four protective fence plates (25) are parallel to the four side surfaces of the base (1) one by one, and a protective space (02) surrounding the transformer is formed between the four protective fence plates (25); When the adjustment device (3) drives the four shafts (2) to rotate in opposite directions simultaneously, the four protective fence panels (25) can be driven to rotate synchronously, and the four protective fence panels (25) swing outward to achieve an open state.

2. The insulation protection device for a power grid according to claim 1, characterized in that: A side mounting box (11) is fixed to one side of the base (1); a side notch (101) penetrating the side mounting box (11) is provided on a side wall of the base (1); the adjustment device (3) comprises a rotating shaft (32), a second sprocket (33), a chain (34), a driving mechanism (35) and four first sprockets (31); The rotating shaft (32) is rotatably arranged in the inner cavity (01), the second sprocket (33) is fixedly sleeved on the rotating shaft (32), the driving mechanism (35) is arranged in the inner cavity (01), and the rotating shaft (32), the second sprocket (33), the chain (34) and the driving mechanism (35) partially extend into the side notch (101); The four first sprocket wheels (31) are fixed on the four shaft rods (2) in a one-to-one correspondence, and the second sprocket wheel (33) and the four first sprocket wheels (31) are collectively sleeved with the chain (34); The driving mechanism (35) is used to drive the rotating shaft (32) to perform rotation adjustment.

3. The insulation protection device for a power grid according to claim 2, characterized in that: A guide seat (321) is fixed on the inner bottom wall of the inner cavity (01), and the guide seat (321) extends into the side installation box (11) and is fixedly connected to the inner bottom wall of the side installation box (11); The guide seat (321) is provided with a guide groove (322), a threaded rod (323) is rotatably mounted in the guide groove (322), one end of the threaded rod (323) extends through the outside of the guide seat (321) and is fixed with a twist handle (3231); A nut seat (324) is slidably mounted in the guide groove (322), the nut seat (324) is thread-matchedly sleeved in the threaded rod (323), and a mounting seat (325) is fixed to the top of the nut seat (324); The rotating shaft (32) is rotatably mounted on the mounting seat (325), and the driving mechanism (35) is arranged above the mounting seat (325).

4. The insulation protection device for a power grid according to claim 3, characterized in that: The driving mechanism (35) comprises a worm (352), a driving motor (353), a worm wheel (354), and a pair of brackets (351); The two brackets (351) are fixed on the upper surface of the mounting seat (325), and the worm (352) is rotatably mounted on the two brackets (351); The driving motor (353) is fixed on the mounting seat (325), and the output shaft is fixedly connected to one end of the worm (352); The worm wheel (354) is fixedly sleeved on the outside of the rotating shaft (32) and is correspondingly meshed with the worm (352).

5. The insulation protection device for a power grid according to claim 1, characterized in that: A triangular protective plate (4) is fixed to the top of each of the first column (21) and the third column (23). When the four protective fence plates (25) gather toward the middle to form the protection space (02), the two triangular protective plates (4) are combined to form a whole sealing plate for sealing the top opening of the protection space (02).

6. The insulation protection device for a power grid according to claim 5, characterized in that: The edges of the two triangular protective plates (4) close to each other are both provided with semicircular grooves (41); when the two triangular protective plates (4) are matched to form a whole sealing plate, the two semicircular grooves (41) are matched to form a full-circular bayonet (42); A mounting cylinder formed by two arc-shaped plates (5) is mounted in the circular bayonet (42), and a support body (6) is built into the mounting cylinder; The outer peripheral surface of the support body (6) is uniformly provided with a plurality of vertically penetrating guide grooves (61) around its axis, and a limiting cavity (62) for guiding the transformer power transmission line is formed between the guide grooves (61) and the inner wall of the arc-shaped plate (5).

7. The insulation protection device for a power grid according to claim 6, characterized in that: The outer wall of the arc-shaped plate (5) is provided with a clamping groove (51), and when the two arc-shaped plates (5) are matched, the two clamping grooves (51) form a whole annular groove, and the whole circular clamping opening (42) formed by the two triangular protective plates (4) matched together fits in the annular groove; A clamping rod (52) is fixed on the inner walls of the two arc-shaped plates (5), respectively. Clamping holes (601) are provided on both sides of the outer wall of the support body (6), and the clamping rod (52) can be matched and inserted into the clamping holes (601).

8. The insulation protection device for a power grid according to claim 2, characterized in that: The side portion of the side installation box (11) is provided with an operation opening (1101) communicating with the interior thereof, and a storage groove (111) is provided on one of the side walls of the operation opening (1101); An interception plate (112) for blocking the operation opening (1101) is slidably installed in the storage groove (111).

9. The insulation protection device for a power grid according to claim 8, characterized in that: Also includes a lock body (115); A first fastener (113) having a first through hole (1131) is fixed on the intercepting plate (112), and a second fastener (114) having a second through hole (1141) is fixed on the outer surface of the side mounting box (11); When the intercepting plate (112) blocks the operating port (1101), the lock body (115) is arranged through the first through hole (1131) and the corresponding second through hole (1141) to achieve locking.

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