Emergency power supply with isolation protection structure for safety protection of large power grid

Abstract

The invention discloses an emergency power supply with an isolation protection structure for safety protection of a large power grid, and relates to the technical field of isolation protection, and the emergency power supply comprises an emergency power supply protection box which is arranged on the ground; the cabinet door is rotationally mounted on the inner wall of the emergency power supply protection box; the bidirectional telescopic device is fixedly mounted on the surface of the emergency power supply protection box; the fixing frame is fixedly installed at the output end of the two-way telescopic device, and the two-way telescopic device is used for driving the fixing frame to move in a reciprocating mode; the isolation plate is fixedly mounted on the surface of the fixing frame; the rotating shaft is rotationally mounted on the surface of the isolation plate; the protection plate is fixedly mounted on the circumferential surface of the rotating shaft; the isolation plate moves in the direction away from the emergency power supply protection box to prevent the device from being affected by external environmental factors to affect timely power supply of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of isolation protection, and particularly to an emergency power supply with an isolation protection structure for large power grid security protection. Background Art

[0002] The emergency power supply for large power grid security protection is an important device to ensure that the power system can quickly resume power supply and ensure the normal operation of key facilities in case of failures or emergencies.

[0003] The patent with the patent publication number CN111030281B relates to an emergency power supply with an isolation protection structure, belonging to the technical field of emergency power supplies. It includes an EPS emergency power supply body, a clamping strip, a clamping seat, a return spring, and a threaded column. A first mounting shaft is installed on the outer side of the box body of the EPS emergency power supply body. A stable groove is opened on the bottom side of the EPS emergency power supply body, and a return spring is welded and fixed to the top inside the stable groove. A bottom storage groove is opened at the bottom of the EPS emergency power supply body, and a functional board is arranged in the bottom storage groove. Side holes are opened on the side wall of the limiting window, and the side holes are fitted with the threaded column. At the same time, an extrusion disc is welded and fixed at the end of the threaded column. For this emergency power supply with an isolation protection structure, with a new structural design, the isolation protection structure in this device can be stably stored and fixed when not in use, without affecting the normal handling and storage of the overall EPS emergency power supply. When in use, it can be conveniently unfolded and fixed to isolate and protect both sides of the EPS emergency power supply to avoid collisions.

[0004] In the above patent, when the isolation protection structure is not in use, it can be stably stored and fixed, without affecting the normal handling and storage of the overall EPS emergency power supply. When in use, it can be conveniently unfolded and fixed to isolate and protect both sides of the EPS emergency power supply to avoid collisions. However, during the protection process, the cabinet door may be opened, which may cause it to be manually closed during the start-up of the emergency power supply, affecting the power restoration. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides an emergency power supply with an isolation protection structure for large power grid security protection, solving the problems raised in the above background art.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions: An emergency power supply with an isolation and protection structure for large power grid security protection, comprising: an emergency power supply protection box, which is arranged on the ground, and an emergency power supply body is arranged inside the emergency power supply protection box; a cabinet door, which is rotatably installed on the inner wall of the emergency power supply protection box; a two-way telescopic device, which is fixedly installed on the surface of the emergency power supply protection box; a fixing frame, which is fixedly installed at the output end of the two-way telescopic device, and the two-way telescopic device is used to drive the fixing frame to move reciprocally; an isolation board, which is fixedly installed on the surface of the fixing frame; a rotating shaft, which is rotatably installed on the surface of the isolation board; a protection board, which is fixedly installed on the circumferential surface of the rotating shaft; a gear, which is fixedly installed at the bottom of the rotating shaft; a rack, which is fixedly installed on the surface of the emergency power supply protection box, and the surfaces of the gear and the rack are meshed. Starting the output end of the two-way telescopic device to move away from the emergency power supply protection box drives the fixing frame to move away from the emergency power supply protection box. The fixing frame moving away from the emergency power supply protection box will drive the isolation board to move away from the emergency power supply protection box.

[0007] According to the above technical solution, a card slot is fixedly installed on the surface of the cabinet door, a sliding plate is slidably installed on the inner wall of the emergency power supply protection box, a connecting plate is fixedly installed on the surface of the sliding plate, and a pulley frame is fixedly installed on the side of the isolation board close to the emergency power supply protection box. The isolation board moving away from the emergency power supply protection box will drive the pulley frame to move away from the emergency power supply protection box. The pulley frame moving away from the emergency power supply protection box will lose the support for the connecting plate.

[0008] According to the above technical solution, a first spring is arranged between the emergency power supply protection box and the sliding plate. When the pulley frame disengages from the contact with the connecting plate, the elastic force of the first spring itself will drive the sliding plate to reset. A slope is arranged on the side of the connecting plate close to the pulley frame, and the pulley frame is in contact with the slope of the connecting plate.

[0009] According to the above technical solution, a protection device for preventing electrical interference and a support device for auxiliary support are arranged on the emergency power supply protection box. The protection device includes a pulley plate, a sliding block, a grounding rod, and a trapezoidal plate. The isolation board moving away from the emergency power supply protection box drives the pulley plate to move away from the emergency power supply protection box. The pulley plate moving away from the emergency power supply protection box will lose the support for the trapezoidal plate. The pulley plate is fixedly installed on the surface of the isolation board, the sliding block is slidably installed on the inner wall of the emergency power supply protection box, the grounding rod is fixedly installed at the bottom of the sliding block, and the trapezoidal plate is fixedly installed on the top of the sliding block.

[0010] According to the above technical solution, a sliding seat is slidably mounted on the surface of the partition board. A short rod is fixedly mounted at the bottom of the sliding seat. A hinge rod is rotatably mounted on the surface of the short rod. One end of the hinge rod away from the short rod is rotatably mounted on the inner wall of the emergency power supply protection box. When the sliding seat moves away from the emergency power supply protection box, it will drive the short rod to move away from the emergency power supply protection box. When the short rod moves away from the emergency power supply protection box, it will be pulled by the hinge rod, and the hinge rod will pull the short rod and the sliding seat to move downward.

[0011] According to the above technical solution, a second spring is provided between the sliding block and the emergency power supply protection box. When the pulley plate is separated from the trapezoidal plate, the elastic force of the second spring itself will drive the sliding block to reset. The pulley plate is in contact with the surface of the trapezoidal plate. A third spring is provided between the partition board and the sliding seat. When the partition board is reset, the elastic force of the third spring itself will drive the sliding seat to reset.

[0012] According to the above technical solution, the support device includes a circular slider, a guide groove, a trapezoidal slider and a chute. When the sliding seat moves downward, it drives the circular slider to move downward. The circular slider will move downward along the guide groove. During the movement of the circular slider, it will contact the trapezoidal slider, and the circular slider will push the trapezoidal slider into the chute. The guide groove is opened on the inner wall of the partition board. One end of the circular slider is slidably mounted on the surface of the sliding seat, and the other end of the circular slider slides on the inner wall of the guide groove. The chute is opened on the surface of the guide groove, and the trapezoidal slider is slidably mounted on the inner wall of the chute.

[0013] According to the above technical solution, a rotating rod is rotatably mounted on the inner wall of the guide groove. A rotating block is fixedly mounted on the surface of the rotating rod. A one-way baffle is fixedly mounted on the surface of the rotating block. The one-way baffle is in contact with the surface of the guide groove. When the output end of the double telescopic device contracts, it will squeeze the hinge rod and the sliding seat to move upward. When the sliding seat moves upward, it will drive the circular slider to move upward along the guide groove away from the end of the trapezoidal slider.

[0014] According to the above technical solution, a fourth spring is provided between the circular slider and the sliding seat. When the circular slider is separated from the contact with the guide groove, the fourth spring will drive the circular slider to reset. A fifth spring is provided between the trapezoidal slider and the chute. When the circular slider is separated from the contact with the trapezoidal slider, the elastic force of the fifth spring itself will drive the trapezoidal slider to reset. A first torsion spring is provided between the guide groove and the rotating rod. When the circular slider is separated from the contact with the one-way baffle, the torsional force of the first torsion spring itself will drive the rotating rod to reset.

[0015] The present invention provides an emergency power supply with an isolation protection structure for large power grid safety protection. It has the following beneficial effects: (1) In this invention, the output end of the bidirectional telescopic device is started to move in the direction away from the emergency power supply protection box, which drives the fixed frame to move in the direction away from the emergency power supply protection box. The movement of the fixed frame in the direction away from the emergency power supply protection box will drive the isolation plate to move in the direction away from the emergency power supply protection box. The isolation plate moves in the direction away from the emergency power supply protection box to prevent the equipment from being affected by external environmental factors and affecting the timely power supply of the equipment. The front of the cabinet door is protected and isolated by the rotation of the protective plate, thereby improving the safety of the equipment during operation. (2) In this invention, the pulley frame moves in the direction away from the emergency power supply protection box by the isolation plate. The pulley frame moves in the direction away from the emergency power supply protection box and will be separated from the support of the connecting plate. The connecting plate will move downward under the elastic force of the No. 1 spring of the sliding plate when it loses support. The sliding plate will be stuck in the card slot when it moves downward. The card slot limits the cabinet door to prevent someone from manually opening the cabinet door during the isolation and protection process, which poses a safety hazard. (3) This invention drives the pulley plate to move away from the emergency power supply protection box by moving the isolation plate in the direction away from the emergency power supply protection box, and moves downward through the grounding rod to contact the ground, thereby guiding excess current, safety current or external interference current to the ground to avoid the interference current from affecting the equipment. When the short rod moves away from the emergency power supply protection box, it will be pulled by the hinged rod, and the hinged rod will pull the short rod and the sliding seat downward. The isolation plate is supported by the rotation of the hinged rod, thereby improving the protection effect of the isolation plate and preventing the isolation plate from being hit, causing the isolation plate to deform and affecting the isolation protection of the equipment. (4) In this invention, the circular slider moves downward by the downward movement of the sliding seat. The circular slider moves downward along the guide groove. During the movement of the circular slider, it contacts the trapezoidal slider. The trapezoidal slider holds the circular slider against the impact of the hinge rod and the sliding seat in the process of supporting the isolation plate. The isolation protection of the equipment is improved. At the same time, the upward movement of the sliding seat drives the circular slider to move upward along the end of the guide groove away from the trapezoidal slider. When the sliding seat moves to the top of the guide groove, the circular slider breaks away from the contact with the guide groove and resets under the elastic force of the No. 4 spring, which is convenient for subsequent isolation protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the protection box and the two-way telescopic device of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of the emergency power supply protection box of the present invention; Figure 4 It is a schematic diagram of the cross-sectional structure of the emergency power supply protection box and the isolation plate of the present invention; Figure 5 It is a schematic diagram of the structure of the hinged rod and the emergency power supply protection box of the present invention; Figure 6 Schematic diagram of the isolation plate and sliding seat structure of the present invention; Figure 7 Schematic diagram of the isolation plate and guide groove structure of the present invention; Figure 8 For the present invention Figure 7 Enlarged schematic diagram of the structure of part A in the present invention.

[0017] In the figure: 1. Emergency power protection box; 2. Cabinet door; 3. Bi-directional telescopic device; 4. Fixed frame; 5. Isolation plate; 6. Rotating shaft; 7. Protection plate; 8. Gear; 9. Rack; 10. Card slot; 11. Sliding plate; 12. Connecting plate; 13. Pulley frame; 141. Pulley plate; 142. Sliding block; 143. Grounding rod; 144. Trapezoidal plate; 145. Hinge rod; 146. Short rod; 147. Sliding seat; 151. Round slider; 152. Guide groove; 153. Trapezoidal slider; 154. Chute; 155. Rotating rod; 156. Rotating block; 157. One-way baffle. Specific embodiments

[0018] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0019] Please refer to Figures 1-5 , an embodiment of the present invention is: An emergency power supply with an isolation and protection structure for large-scale power grid safety protection, including: an emergency power protection box 1, the emergency power protection box 1 is arranged on the ground, and an emergency power supply body is arranged inside the emergency power protection box 1; a cabinet door 2, the cabinet door 2 is rotatably installed on the inner wall of the emergency power protection box 1; a bi-directional telescopic device 3, the bi-directional telescopic device 3 is fixedly installed on the surface of the emergency power protection box 1; a fixed frame 4, the fixed frame 4 is fixedly installed at the output end of the bi-directional telescopic device 3, and the bi-directional telescopic device 3 is used to drive the fixed frame 4 to reciprocate; an isolation plate 5, the isolation plate 5 is fixedly installed on the surface of the fixed frame 4; a rotating shaft 6, the rotating shaft 6 is rotatably installed on the surface of the isolation plate 5; a protection plate 7, the protection plate 7 is fixedly installed on the circumferential surface of the rotating shaft 6; a gear 8, the gear 8 is fixedly installed at the bottom of the rotating shaft 6; a rack 9, the rack 9 is fixedly installed on the surface of the emergency power protection box 1, and the surfaces of the gear 8 and the rack 9 are engaged, and by moving the isolation plate 5 away from the emergency power protection box 1, it is possible to prevent the device from being affected by external environmental factors and affecting the timely power supply of the device.

[0020] A card slot 10 is fixedly installed on the surface of the cabinet door 2. A sliding plate 11 is slidably installed on the inner wall of the emergency power protection box 1. A connecting plate 12 is fixedly installed on the surface of the sliding plate 11. A pulley frame 13 is fixedly installed on the side of the isolation plate 5 close to the emergency power protection box 1. When the sliding plate 11 moves downward, it will be stuck in the slot of the card slot 10 to limit the cabinet door 2, preventing someone from manually opening the cabinet door 2 during the isolation and protection process, which poses a safety hazard.

[0021] A first spring is arranged between the emergency power protection box 1 and the sliding plate 11. After the pulley frame 13 disengages from the contact with the connecting plate 12, the elastic force of the first spring itself will drive the sliding plate 11 to reset. A slope is arranged on the side of the connecting plate 12 close to the pulley frame 13, and the pulley frame 13 is in contact with the slope of the connecting plate 12.

[0022] During the operation of this embodiment: Start the output end of the bidirectional telescopic device 3 to move away from the emergency power protection box 1, driving the fixed frame 4 to move away from the emergency power protection box 1. The movement of the fixed frame 4 away from the emergency power protection box 1 will drive the isolation plate 5 to move away from the emergency power protection box 1, preventing the device from being affected by external environmental factors and affecting the timely power supply of the device. The movement of the isolation plate 5 away from the emergency power protection box 1 will drive the rotating shaft 6 to move away from the emergency power protection box 1. The movement of the rotating shaft 6 away from the emergency power protection box 1 will drive the gear 8 to move away from the emergency power protection box 1. The movement of the gear 8 away from the emergency power protection box 1 meshes with the rack 9 to rotate. The rotation of the gear 8 will drive the rotating shaft 6 to rotate. The rotation of the rotating shaft 6 will drive the protection plate 7 to rotate, protecting and isolating the front of the cabinet door 2 through the rotation of the protection plate 7, improving the safety during the operation of the device. At the same time, the movement of the isolation plate 5 away from the emergency power protection box 1 will drive the pulley frame 13 to move away from the emergency power protection box 1. The movement of the pulley frame 13 away from the emergency power protection box 1 will disengage from the support of the connecting plate 12. The connecting plate 12 will move downward under the elastic force of the first spring of the sliding plate 11. The downward movement of the sliding plate 11 will be stuck in the slot of the card slot 10 to limit the cabinet door 2, preventing someone from manually opening the cabinet door 2 during the isolation and protection process, which poses a safety hazard.

[0023] Please refer to Figures 1-8, on the basis of the above embodiments, in another embodiment of the present invention, a protection device for preventing electrical interference and a support device for auxiliary support are provided on the emergency power protection box 1. The protection device includes a pulley plate 141, a sliding block 142, a grounding rod 143, and a trapezoidal plate 144. The pulley plate 141 is fixedly installed on the surface of the isolation plate 5, the sliding block 142 is slidably installed on the inner wall of the emergency power protection box 1, the grounding rod 143 is fixedly installed at the bottom of the sliding block 142, and the trapezoidal plate 144 is fixedly installed at the top of the sliding block 142. By moving the grounding rod 143 downward to contact the ground, the excess current, safety current, or external interference current can be guided to the ground, avoiding the influence of the interference current on the equipment.

[0024] A sliding seat 147 is slidably installed on the surface of the isolation plate 5. A short rod 146 is fixedly installed at the bottom of the sliding seat 147. A hinge rod 145 is rotatably installed on the surface of the short rod 146. One end of the hinge rod 145 away from the short rod 146 is rotatably installed on the inner wall of the emergency power protection box 1. By rotating the hinge rod 145 to support the isolation plate 5, the protection effect of the isolation plate 5 is improved, preventing the isolation plate 5 from being impacted and deformed, which affects the isolation protection of the equipment.

[0025] A second spring is provided between the sliding block 142 and the emergency power protection box 1. When the pulley plate 141 and the trapezoidal plate 144 are separated, the elastic force of the second spring itself will drive the sliding block 142 to reset. The pulley plate 141 contacts the surface of the trapezoidal plate 144. A third spring is provided between the isolation plate 5 and the sliding seat 147. When the isolation plate 5 is reset, the elastic force of the third spring itself will drive the sliding seat 147 to reset.

[0026] The support device includes a circular slider 151, a guide groove 152, a trapezoidal slider 153, and a chute 154. The guide groove 152 is opened on the inner wall of the isolation plate 5. One end of the circular slider 151 is slidably installed on the surface of the sliding seat 147, and the other end of the circular slider 151 slides on the inner wall of the guide groove 152. The chute 154 is opened on the surface of the guide groove 152. The trapezoidal slider 153 is slidably installed on the inner wall of the chute 154. By using the trapezoidal slider 153 to hold the circular slider 151, the hinge rod 145 and the sliding seat 147 will not contract when being impacted during the support of the isolation plate 5, improving the isolation protection of the equipment.

[0027] A rotating rod 155 is rotatably installed on the inner wall of the guide groove 152. A rotating block 156 is fixedly installed on the surface of the rotating rod 155. A one-way baffle 157 is fixedly installed on the surface of the rotating block 156. The one-way baffle 157 contacts the surface of the guide groove 152. When the sliding seat 147 moves to the top of the guide groove 152, it is convenient for subsequent isolation protection.

[0028] A fourth spring is provided between the circular slider 151 and the sliding seat 147. After the circular slider 151 disengages from the guide groove 152, the fourth spring will drive the circular slider 151 to reset. A fifth spring is provided between the trapezoidal slider 153 and the chute 154. After the circular slider 151 disengages from the trapezoidal slider 153, the elastic force of the fifth spring itself will drive the trapezoidal slider 153 to reset. A first torsion spring is provided between the guide groove 152 and the rotating rod 155. After the circular slider 151 disengages from the one-way baffle 157, the torsional force of the first torsion spring itself will drive the rotating rod 155 to reset.

[0029] When this embodiment works: The movement of the isolation plate 5 away from the emergency power protection box 1 drives the pulley plate 141 to move away from the emergency power protection box 1. The movement of the pulley plate 141 away from the emergency power protection box 1 will lose the support for the trapezoidal plate 144, causing the second spring between the sliding block 142 and the emergency power protection box 1 to drive the trapezoidal plate 144 to move downward. The downward movement of the trapezoidal plate 144 will drive the sliding block 142 and the grounding rod 143 to move downward. By contacting the ground through the downward movement of the grounding rod 143, the excess current, safety current or external interference current can be guided to the ground, avoiding the influence of the interference current on the equipment. At the same time, the movement of the isolation plate 5 away from the emergency power protection box 1 will drive the sliding seat 147 to move away from the emergency power protection box 1. The movement of the sliding seat 147 away from the emergency power protection box 1 will drive the short rod 146 to move away from the emergency power protection box 1. The movement of the short rod 146 away from the emergency power protection box 1 will be pulled by the hinge rod 145, and the hinge rod 145 will pull the short rod 146 and the sliding seat 147 to move downward. By rotating the hinge rod 145 to support the isolation plate 5, the protection effect of the isolation plate 5 is improved, preventing the isolation plate 5 from being impacted and deformed, which affects the isolation protection of the equipment.

[0030] The downward movement of the sliding seat 147 drives the circular slider 151 to move downward. The circular slider 151 will move downward along the guiding groove 152. During the downward movement of the circular slider 151, it will contact the trapezoidal slider 153. The circular slider 151 will push the trapezoidal slider 153 to move inside the sliding groove 154. When the circular slider 151 is separated from the trapezoidal slider 153, the elastic force of the fifth spring itself will drive the trapezoidal slider 153 to reset. By using the trapezoidal slider 153 to hold the circular slider 151, the articulated rod 145 and the sliding seat 147 will not contract when being impacted during the support of the isolation plate 5, improving the isolation protection of the equipment. At the same time, when it is necessary to move the isolation plate 5 towards the direction close to the emergency power protection box 1, by continuously moving the isolation plate 5 away from the emergency power protection box 1, the sliding seat 147 will continuously move downward during the movement of the isolation plate 5. The downward movement of the sliding seat 147 will contact the inclined surface of the guiding groove 152, causing the circular slider 151 to move away from the one-way baffle 157. The circular slider 151 will contact the one-way baffle 157 during the downward movement, and the one-way baffle 157 will rotate upward. When the circular slider 151 is separated from the one-way baffle 157, the elastic force of the first torsion spring itself will drive the one-way baffle 157 to reset. At the same time, the bidirectional telescopic device 3 is started to contract. The contraction of the output end of the bidirectional telescopic device 3 will squeeze the articulated rod 145 and the sliding seat 147 to move upward. The upward movement of the sliding seat 147 will drive the circular slider 151 to move upward along the end of the guiding groove 152 away from the trapezoidal slider 153. When the sliding seat 147 moves to the top of the guiding groove 152, the circular slider 151 will be separated from the contact with the guiding groove 152 and reset under the elastic force of the fourth spring, facilitating subsequent isolation protection.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and deformations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An emergency power supply with an isolation and protection structure for large power grid security protection, and a protection device for isolating and protecting the emergency power supply, characterized in that, Including: An emergency power protection box (1), the emergency power protection box (1) is arranged on the ground, and an emergency power supply body is arranged inside the emergency power protection box (1); A cabinet door (2), the cabinet door (2) is rotatably installed on the inner wall of the emergency power protection box (1); A bidirectional telescopic device (3), the bidirectional telescopic device (3) is fixedly installed on the surface of the emergency power protection box (1); A fixing frame (4), the fixing frame (4) is fixedly installed at the output end of the bidirectional telescopic device (3), and the bidirectional telescopic device (3) is used to drive the fixing frame (4) to reciprocate; An isolation board (5), the isolation board (5) is fixedly installed on the surface of the fixing frame (4); A rotating shaft (6), the rotating shaft (6) is rotatably installed on the surface of the isolation board (5); A protection board (7), the protection board (7) is fixedly installed on the circumferential surface of the rotating shaft (6); A gear (8), the gear (8) is fixedly installed at the bottom of the rotating shaft (6); A rack (9), the rack (9) is fixedly installed on the surface of the emergency power protection box (1), the surfaces of the gear (8) and the rack (9) are meshed, and a protection device for preventing electrical interference and a support device for auxiliary support are arranged on the emergency power protection box (1).

2. An emergency power supply with an isolation and protection structure for large-scale power grid security protection according to claim 1, characterized in that: A card slot (10) is fixedly installed on the surface of the cabinet door (2), a sliding plate (11) is slidably installed on the inner wall of the emergency power protection box (1), a connecting plate (12) is fixedly installed on the surface of the sliding plate (11), and a pulley frame (13) is fixedly installed on one side of the isolation board (5) close to the emergency power protection box (1).

3. An emergency power supply with an isolation and protection structure for large power grid safety protection according to claim 2, characterized in that: A first spring is arranged between the emergency power protection box (1) and the sliding plate (11), a slope is arranged on one side of the connecting plate (12) close to the pulley frame (13), and the pulley frame (13) is in contact with the slope of the connecting plate (12).

4. An emergency power supply with an isolation protection structure for large power grid safety protection according to claim 3, characterized in that: The protection device includes a pulley plate (141), a sliding block (142), a grounding rod (143) and a trapezoidal plate (144), the pulley plate (141) is fixedly installed on the surface of the isolation board (5), the sliding block (142) is slidably installed on the inner wall of the emergency power protection box (1), the grounding rod (143) is fixedly installed at the bottom of the sliding block (142), and the trapezoidal plate (144) is fixedly installed at the top of the sliding block (142).

5. An emergency power supply with an isolation protection structure for large power grid safety protection according to claim 4, characterized in that: A sliding seat (147) is slidably installed on the surface of the isolation board (5), a short rod (146) is fixedly installed at the bottom of the sliding seat (147), a hinge rod (145) is rotatably installed on the surface of the short rod (146), and one end of the hinge rod (145) far from the short rod (146) is rotatably installed on the inner wall of the emergency power protection box (1).

6. An emergency power supply with an isolation and protection structure for large power grid safety protection according to claim 5, characterized in that: A second spring is arranged between the sliding block (142) and the emergency power protection box (1), the surfaces of the pulley plate (141) and the trapezoidal plate (144) are in contact, and a third spring is arranged between the isolation board (5) and the sliding seat (147).

7. An emergency power supply with an isolation protection structure for large power grid security protection according to claim 6, characterized in that: The support device includes a circular slider (151), a guide groove (152), a trapezoidal slider (153) and a sliding groove (154). The guide groove (152) is formed on the inner wall of the partition plate (5). One end of the circular slider (151) is slidably mounted on the surface of the sliding seat (147), and the other end of the circular slider (151) slides on the inner wall of the guide groove (152). The sliding groove (154) is formed on the surface of the guide groove (152), and the trapezoidal slider (153) is slidably mounted on the inner wall of the sliding groove (154).

8. An emergency power supply with an isolation and protection structure for large power grid security protection according to claim 7, characterized in that: A rotating rod (155) is rotatably mounted on the inner wall of the guide groove (152). A rotating block (156) is fixedly mounted on the surface of the rotating rod (155). A one-way baffle (157) is fixedly mounted on the surface of the rotating block (156), and the one-way baffle (157) contacts the surface of the guide groove (152).

9. An emergency power supply with an isolation and protection structure for large power grid safety protection according to claim 8, characterized in that: A fourth spring is provided between the circular slider (151) and the sliding seat (147). A fifth spring is provided between the trapezoidal slider (153) and the sliding groove (154). A first torsion spring is provided between the guide groove (152) and the rotating rod (155).

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