Voltage transformer for high-voltage high-tension systems

Abstract

The application relates to the field of high-speed train high-voltage system equipment, in particular to a voltage transformer for a high-speed train high-voltage system, which comprises a supporting plate, a fixed plate, a supporting elastic piece and an energy dissipation plate. The supporting elastic piece is used for primary energy dissipation of a voltage transformer body, the energy dissipation plate is used for secondary energy dissipation of the voltage transformer body, and the energy dissipation plate is easy to reset under the influence of gravity, so that the voltage transformer body is more likely to keep good stability during high-speed train bumping, thereby realizing the effect of efficiently buffering and dissipating the voltage transformer, and prolonging the operation life of the high-speed train roof voltage transformer.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of high-speed rail motor train unit high-voltage system equipment, in particular to a voltage transformer for high-speed rail high-voltage system. BACKGROUND

[0002] The high-voltage system of some types of high-speed rail motor train units is designed based on 25kv power supply conditions. The high-speed rail motor train unit is 16 vehicles in a consist, and vehicles 1-8 and vehicles 9-16 respectively form two independent and identical high-voltage units.

[0003] The high-voltage equipment installed on the roof of the high-speed rail vehicle includes a voltage transformer. The voltage transformer is located between the pantograph and the main circuit breaker. Its main function is to detect the catenary voltage and provide the detected signal to the network control system of the train and the corresponding traction converter, so that the corresponding system can be controlled and protected.

[0004] The installation method of the voltage transformer is usually bolted, as shown in Figure 1 The voltage transformer includes a voltage transformer body 100 and a mounting base 200. The mounting base 200 is fixedly connected to the bottom of the voltage transformer body 100. The mounting base 200 is a long strip structure, and the cross section of the mounting base 200 is in inverted U-shaped structure. A clamping rod 300 is provided at the high-voltage equipment installation position on the roof of the high-speed rail vehicle. The mounting base 200 is clamped on the clamping rod 300 and fixed by bolts, thereby completing the installation of the voltage transformer.

[0005] However, the high-speed rail will have some bumps during operation. The rigid fixing method of the voltage transformer by bolts may be damaged due to lack of energy dissipation measures. SUMMARY

[0006] In order to achieve the effect of efficient buffering and energy dissipation of the voltage transformer, thereby improving the operating life of the voltage transformer on the roof of the high-speed rail, the present application provides a voltage transformer for high-speed rail high-voltage system.

[0007] The voltage transformer for high-speed rail high-voltage system provided by the present application adopts the following technical scheme:

[0008] A voltage transformer for high-speed rail high-voltage system, comprising a voltage transformer body, a clamping base connected to the bottom of the voltage transformer body; the clamping base comprises:

[0009] a support plate fixedly connected to the bottom of the voltage transformer body;

[0010] a fixed plate located below the support plate, the fixed plate being used for fixing on the roof of the high-speed rail;

[0011] a support elastic member connected between the support plate and the fixed plate;

[0012] An arc-shaped tube is fixedly connected to the fixed plate, one end of the arc-shaped tube is fixedly connected with a guide tube, the arc-shaped tube and the guide tube are communicated, the guide tube is located between the support plate and the fixed plate, a sliding rod is slidably arranged in the guide tube, one end of the sliding rod is fixedly connected to the support plate;

[0013] A sliding assembly is slidably arranged in the arc-shaped tube, a closed accommodating cavity is formed between the sliding assembly and the sliding rod, the accommodating cavity is an inner cavity formed by the communication between the arc-shaped tube and the guide tube;

[0014] An energy dissipation plate is rotatably connected to the fixed plate, an arc-shaped sliding groove is formed in the energy dissipation plate, the arc-shaped tube is arranged in the sliding groove, the energy dissipation plate can rotate along the arc line of the arc-shaped tube, and the sliding assembly is connected to the energy dissipation plate.

[0015] By using the above technical scheme, the fixed plate is fixed on the high-speed rail to realize the installation and positioning of the voltage transformer. When the high-speed rail runs stably, the voltage transformer body is kept stable under the action of the support elastic member. When the voltage transformer body shakes, the support plate shakes, and the support elastic member performs primary energy dissipation on the support plate. When the voltage transformer drives the sliding rod to shake downward, the sliding rod drives the sliding assembly to rotate along the arc-shaped tube by extruding the accommodating cavity, and the sliding assembly drives the energy dissipation plate to rotate upward. Thus, the kinetic energy of the voltage transformer body is converted into the kinetic energy of the energy dissipation plate, and the purpose of energy dissipation is achieved, and secondary energy dissipation is achieved.

[0016] When the voltage transformer body drives the sliding rod to slide upward and reset, the energy dissipation plate rotates downward relying on the gravity and the suction force of the accommodating cavity. Due to the existence of the gravity, the energy dissipation plate is reset conveniently, so that the voltage transformer body is reset conveniently.

[0017] The above technical scheme achieves the purpose of fully damping the voltage transformer body through primary energy dissipation and secondary energy dissipation, and the voltage transformer body is easy to reset after energy dissipation.

[0018] Optionally, the sliding assembly comprises a transmission block, a movable block and an arc-shaped compression spring, the arc-shaped compression spring is connected between the transmission block and the movable block, the movable block is located between the transmission block and the sliding rod, the transmission block is connected to the energy dissipation plate, and the accommodating cavity is located between the movable block and the sliding rod.

[0019] By adopting the technical scheme, when the movable block shakes towards the transmission block due to the voltage transformer, the movable block extrudes the arc-shaped compression spring, so that the arc-shaped compression spring buffers the movement of the movable block, and the energy dissipation effect of the voltage transformer is further improved. The movable block drives the transmission block to move through the arc-shaped compression spring, the transmission block drives the energy dissipation plate to rotate, and then the energy dissipation plate is used to dissipate the energy of the voltage transformer body. Due to the gravity of the energy dissipation plate, the arc-shaped compression spring is always in a compressed state, so that the arc-shaped compression spring is not easy to be deformed by tension, and the arc-shaped compression spring can maintain normal work and is not easy to be damaged.

[0020] Optionally, a displacement slot is formed in the wall of the arc-shaped tube, and a connecting block is fixedly connected between the energy dissipation plate and the transmission block, and the connecting block is slidingly arranged in the displacement slot.

[0021] By adopting the technical scheme, the transmission block drives the energy dissipation plate to rotate through the connecting block when the transmission block moves, and the connection between the transmission block and the energy dissipation plate is realized by the slotting mode of the wall of the arc-shaped tube, so that the length of the arc-shaped tube can be set to be relatively long, and the energy dissipation plate is not easy to be separated from the arc-shaped tube.

[0022] Optionally, a fixed seat is arranged below the fixed plate, the fixed plate is attached to the top of the fixed seat, a clamping groove is formed in the top of the fixed seat, the groove bottom of the clamping groove is an arc surface, the arc-shaped tube is attached to the groove bottom of the clamping groove, a limiting rod is fixedly connected to the fixed seat, the arc-shaped tube is clamped between the limiting rod and the fixed seat, and the fixed seat is used to be fixed on the roof of a high-speed train.

[0023] By adopting the technical scheme, the limiting effect of the clamping groove on the arc-shaped rod makes the fixed plate not easy to shake horizontally, and the limiting rod limits the upward movement of the arc-shaped tube, so that the fixed plate is quickly fixed.

[0024] Optionally, an extension plate is slidingly connected to the bottom of the energy dissipation plate, a sliding block is rotatably connected to the bottom of the extension plate, the sliding block is slidingly connected to the fixed seat, the clamping base is provided with at least two, and the sliding blocks between the adjacent two clamping bases can collide with each other.

[0025] By adopting the technical scheme, when the energy dissipation plate rotates, the sliding blocks are driven to slide, and when the sliding blocks between the adjacent two clamping bases collide with each other, the energy is consumed, so that the energy dissipation effect is high. And the collision between the sliding plates is easier to design than the collision between the energy dissipation plates.

[0026] Optionally, two ends of the limiting rod are respectively provided with mounting plates, the mounting plates are fixedly connected to the fixing seat, a waist-shaped hole is formed in the mounting plate, the limiting rod is arranged in the waist-shaped hole, and the limiting rod is fixed between the two mounting plates by bolts.

[0027] By adopting the above technical scheme, the waist-shaped hole is arranged, the position of the limiting rod is adjusted, and the arc-shaped pipe is positioned by the limiting rod.

[0028] Optionally, the accommodating cavity is filled with hydraulic oil.

[0029] By adopting the above technical scheme, the kinetic energy is more easily transmitted between the sliding rod and the movable block.

[0030] Optionally, one end of the arc-shaped pipe away from the guide pipe is connected with a limiting pipe, an energy-dissipation rod is arranged in the limiting pipe and can impact the bottom of the voltage transformer body, and a sealed transmission cavity is formed between the energy-dissipation rod and the sliding assembly.

[0031] By adopting the above technical scheme, when the transmission block drives the energy-dissipation plate to swing upward, the transmission block is extruded to drive the energy-dissipation rod to move upward, so that the energy-dissipation rod has a certain kinetic energy, which is the first energy dissipation of the energy-dissipation rod to the voltage transformer body. When the energy-dissipation rod moves upward and the voltage transformer body moves downward, the energy-dissipation rod impacts the support plate, which is the second energy dissipation of the energy-dissipation rod to the voltage transformer body. Thus, the energy-dissipation rod can perform two-stage energy dissipation on the voltage transformer body, and the anti-seismic performance of the voltage transformer body is greatly improved.

[0032] In addition, the limiting pipe limits the height of the support plate, thereby limiting the amplitude of the voltage transformer body vibration and improving the stability of the voltage transformer.

[0033] Optionally, the transmission cavity is filled with hydraulic oil.

[0034] By adopting the above technical scheme, the kinetic energy is more easily transmitted between the transmission block and the energy-dissipation rod.

[0035] In summary, the present application has at least one of the following beneficial technical effects:

[0036] 1. The voltage transformer body is subjected to one-stage energy dissipation by the support elastic element, two-stage energy dissipation by the energy-dissipation plate, and easy resetting under the action of gravity, so that the voltage transformer body is more easily kept stable during high-speed rail vibration, thereby achieving the effect of efficiently buffering and dissipating the voltage transformer, and improving the operation life of the high-speed rail roof voltage transformer.

[0037] 2. The sliding assembly comprises a transmission block, a movable block and an arc-shaped compression spring, further buffering and damping is carried out between the movable block and the transmission block by the arc-shaped compression spring, so that the buffering plate moves more stably, and the damping performance of the voltage transformer body is higher.

[0038] 3. Energy dissipation of the voltage transformer body is carried out by the movement of the energy dissipation rod, and the energy dissipation rod collides with the support plate to realize re-dissipation of the voltage transformer body, thereby realizing multi-stage energy dissipation effect of the voltage transformer body, and further improving the damping performance of the voltage transformer body. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 is a structural schematic diagram of a voltage transformer in the background art.

[0040] Figure 2 is a structural schematic diagram of a voltage transformer in the present application.

[0041] Figure 3 is a structural schematic diagram of a clamping base in the present application.

[0042] Figure 4 is a top view of Figure 3

[0043] Figure 5 is an A-A sectional view of Figure 4

[0044] Figure 6 is a structural schematic diagram of a sliding assembly in the present application.

[0045] Figure 7 is a structural schematic diagram of an energy dissipation plate in the present application.

[0046] Figure 8 is an enlarged view of part B of Figure 7

[0047] REFERENCE SIGNS:

[0048] 100, voltage transformer body; 200, mounting base; 300, clamping rod; 1, voltage transformer body; 2, support plate; 3, fixed plate; 4, support elastic member; 5, arc-shaped tube; 51, guide tube; 52, sliding rod; 53, accommodating cavity; 54, clearance groove; 55, connecting block; 56, limiting tube; 57, energy dissipation rod; 58, transmission cavity; 6, sliding assembly; 61, transmission block; 62, movable block; 63, arc-shaped compression spring; 7, energy dissipation plate; 71, sliding groove; 72, extension plate; 73, sliding block; 74, dovetail block; 8, fixed seat; 81, bottom plate; 82, fixed block; 821, clamping groove; 822, limiting rod; 823, mounting plate; 824, waist-shaped hole; 83, dovetail groove. DETAILED DESCRIPTION ​​​

[0049] The application will be further described below in conjunction with the accompanying drawings. Figures 2-8 The application will be further described below in conjunction with the accompanying drawings.

[0050] The application discloses a voltage transformer for high-speed rail high-voltage system.

[0051] Referring to Figure 2 The voltage transformer for high-speed rail high-voltage system comprises a voltage transformer body 1, and a plurality of clamping bases are connected to the bottom of the voltage transformer body 1, the number of the clamping bases is not less than two, two clamping bases are arranged in the embodiment, and the two clamping bases are used for being mounted on the roof of a high-speed train. The plurality of clamping bases perform multi-stage buffering and shock absorption on the voltage transformer body 1, so that the shock absorption performance of the voltage transformer body 1 is improved, and the service life of the voltage transformer is further improved.

[0052] Referring to Figure 2 , Figure 3 The clamping base comprises a supporting plate 2 and a fixed plate 3, the supporting plate 2 and the fixed plate 3 are both arranged horizontally, the supporting plate 2 is fixed to the bottom of the voltage transformer body 1 through bolts, and the fixed plate 3 is located below the supporting plate 2. A plurality of supporting elastic members 4 are connected between the fixed plate 3 and the supporting plate 2, and the supporting elastic members 4 are supporting springs. A fixed seat 8 is arranged at the bottom of the fixed plate 3, the fixed seat 8 comprises a bottom plate 81 and a fixed block 82, the fixed block 82 is in the shape of a long rod and is welded to the bottom plate 81, the bottom plate 81 is fixed to the roof of the high-speed train through bolts, and the fixed plate 3 is attached to the upper surface of the fixed block 82. The supporting spring performs energy dissipation on the voltage transformer body 1.

[0053] Referring to Figure 3 Four arc-shaped pipes 5 are fixedly connected to the bottom of the fixed plate 3, the arc-shaped pipes 5 are semicircular pipes, and the four arc-shaped pipes 5 are arranged in a rectangular array. One end of the arc-shaped pipe 5 penetrates into the fixed plate 3, the other end is located outside the fixed plate 3, the arc-shaped pipe 5 is in a downward protruding shape, and the two ends of the arc-shaped pipe 5 are located at the same horizontal height.

[0054] Referring to Figure 4 , Figure 5 A plurality of guide pipes 51 are arranged on the upper surface of the fixed plate 3, the guide pipes 51 are arranged in one-to-one correspondence with the arc-shaped pipes 5, the guide pipes 51 are arranged vertically, and the guide pipes 51 are in communication with the arc-shaped pipes 5. A sliding rod 52 is arranged in the guide pipe 51, and the top of the sliding rod 52 penetrates out of the guide pipe 51 and is fixedly connected to the bottom of the supporting plate 2.

[0055] Referring to Figure 5 , Figure 6The sliding assembly 6 is arranged in the arc-shaped pipe 5, and the sliding assembly 6 comprises a transmission block 61, a movable block 62 and an arc-shaped compression spring 63, wherein the arc-shaped compression spring 63 is connected between the movable block 62 and the transmission block 61. The movable block 62 is located between the transmission block 61 and the sliding rod 52, and a containing cavity 53 is formed between the movable block 62 and the sliding rod 52, and the containing cavity 53 is an inner cavity formed at the connecting position of the arc-shaped pipe 5 and the guide pipe 51. The containing cavity 53 is filled with hydraulic oil.

[0056] When the voltage transformer body 1 is shaken downward by the support plate 2 and the sliding rod 52, the sliding rod 52 drives the movable block 62 to rotate along the arc-shaped pipe 5 by extruding the hydraulic oil in the containing cavity 53, the movable block 62 extrudes the arc-shaped compression spring 63, and the arc-shaped compression spring 63 is pressed to increase the elastic potential energy, thereby further dissipating the energy of the voltage transformer body 1.

[0057] With reference to Figure 3 , Figure 5 , in order to facilitate the fixing of the fixed plate 3, two clamping grooves 821 are formed in the top of the fixed block 82, the bottom of the clamping groove 821 is an arc surface, a limiting rod 822 is arranged in the clamping groove 821, the arc-shaped pipe 5 is divided into two groups, each group of arc-shaped pipes 5 corresponds to one clamping groove 821, so that the arc-shaped pipe 5 is clamped between the limiting rod 822 and the fixed block 82, and the arc-shaped pipe 5 is attached to the groove bottom wall of the clamping groove 821.

[0058] With reference to Figure 3 , Figure 5 , the two ends of the limiting rod 822 are respectively provided with mounting plates 823, and the mounting plates 823 are welded on the fixed block 82. A waist-shaped hole is formed in the mounting plate 823 for the limiting rod 822 to pass through, and the limiting rod 822 is fixed to the mounting plate 823 by bolts. Therefore, by fixing two limiting rods 822, a plurality of arc-shaped pipes can be fixed in the clamping groove 821, thereby achieving the fixing of the fixed plate 3, and the fixing method is quick and stable.

[0059] With reference to Figure 3 , Figure 5 , the two sides of the fixed plate 3 are rotatably connected with energy dissipation plates 7, the axis around which the energy dissipation plate 7 rotates is horizontally arranged, and a fixed seat 8 is located between the two energy dissipation plates 7. Each energy dissipation plate 7 can correspond to a plurality of arc-shaped pipes 5, and each energy dissipation plate 7 in the embodiment corresponds to two arc-shaped pipes 5.

[0060] With reference to Figure 5 , Figure 6 , Figure 7The arc-shaped sliding groove 71 is arranged on the energy dissipation plate 7 in one-to-one correspondence with the arc-shaped tube 5, and the arc-shaped tube 5 is arranged in the sliding groove 71. The axis of rotation of the energy dissipation plate 7 passes through the center of the arc-shaped tube 5, so that the energy dissipation plate 7 rotates along the arc of the arc-shaped tube 5 when rotating. The let-out groove 54 is arranged on the wall of the arc-shaped tube 5, and the connecting block 55 is welded between the transmission block 61 and the energy dissipation plate 7.

[0061] When the arc-shaped compression spring 63 drives the transmission block 61 to swing upward, the transmission block 61 drives the energy dissipation plate 7 to swing upward through the connecting block 55. Thus, the kinetic energy of the voltage transformer body 1 is converted into the kinetic energy of the energy dissipation plate 7, and further energy dissipation of the voltage transformer body 1 is achieved.

[0062] When the high-speed rail runs stably, the energy dissipation plate 7 is arranged obliquely, and the energy dissipation plate 7 has a downward swinging trend under the action of gravity, so that the arc-shaped compression spring 63 is always in a compressed state. Therefore, on the one hand, the arc-shaped compression spring 63 is not easy to be stretched too long by tension to cause the damping effect to fail, and the arc-shaped compression spring 63 can maintain a continuous damping effect; on the other hand, the arc-shaped compression spring 63 is not easy to be deformed and damaged by tension.

[0063] Referring to Figure 2 , Figure 3 , Figure 5 The bottom of the energy dissipation plate 7 is slidably connected with an extension plate 72, and the energy dissipation plate 7 and the extension plate 72 form an extension plate. The extension plate 72 can be inserted into or extended out of the energy dissipation plate 7. The bottom of the extension plate 72 is rotatably connected with a sliding block 73, the bottom of the sliding block 73 is fixedly connected with a dovetail block 74, and the bottom plate 81 is provided with a dovetail groove 83 for sliding of the dovetail block 74, so that the sliding block 73 can stably slide and fit on the fixed seat 8.

[0064] Since the length of the dovetail block 74 is greater than the length of the sliding block 73 in the embodiment, when the swing amplitude of the voltage transformer body 1 is large, the dovetail blocks 74 between adjacent clamping bases can collide with each other, thereby further dissipating the energy of the voltage transformer body 1. If the length of the sliding block 73 is designed to be greater than that of the dovetail block 74, further energy dissipation can be achieved by collision between the sliding blocks 73 of adjacent clamping bases.

[0065] Referring to Figure 3 , Figure 5 The end of the arc-shaped tube 5 away from the guide tube 51 is fixedly connected with a limiting tube 56, and the limiting tube 56 is vertically arranged above the arc-shaped tube 5. The energy dissipation rod 57 is slidably arranged in the limiting tube 56, and the end of the transmission block 61 towards the energy dissipation rod 57 blocks the let-out groove 54, so that the energy dissipation rod 57 and the transmission block 61 form a closed transmission cavity 58, and the transmission cavity 58 is filled with hydraulic oil.

[0066] When the energy dissipation rod 57 rises, the voltage transformer body 1 drives the support plate 2 to descend, and when the energy dissipation rod 57 collides with the support plate 2, further energy dissipation of the voltage transformer body 1 is realized. After the energy dissipation rod 57 collides with the support plate 2, the energy dissipation rod 57 moves downward, and the energy dissipation plate swings downward, at this time, the arc-shaped compression spring 63 continuously compresses, and the residual kinetic energy of the voltage transformer body 1 is damped and dissipated, and further energy dissipation of the voltage transformer body 1 is realized.

[0067] In addition, the limiting tube 56 limits the descending height of the support plate 2, thereby limiting the swing amplitude of the voltage transformer body 1, and thereby improving the stability of the voltage transformer body 1.

[0068] The implementation principle of the voltage transformer for high-speed high-voltage system in the embodiment of the application is as follows: when the voltage transformer body 1 drives the support plate 2 to swing downward, the support elastic member 4 is compressed, and the elastic potential energy increases. The support plate 2 drives the sliding rod 52 to swing downward, the sliding rod 52 drives the movable block 62 to rotate along the arc-shaped tube 5 by extruding the hydraulic oil in the containing cavity 53, the movable block 62 extrudes the arc-shaped compression spring 63, and the arc-shaped compression spring 63 is compressed to cause the elastic potential energy to increase. The support elastic member 4 and the arc-shaped compression spring 63 realize the first energy dissipation of the voltage transformer body 1.

[0069] The arc-shaped compression spring 63 drives the transmission block 61 to swing upward, the transmission block 61 drives the energy dissipation plate 7 to swing upward through the connecting block 55. Thus, the kinetic energy of the voltage transformer body 1 is converted into the kinetic energy of the energy dissipation plate 7. The transmission block 61 extrudes the hydraulic oil in the transmission cavity 58, thereby causing the energy dissipation rod 57 to move upward. Thus, part of the energy of the voltage transformer body 1 is transferred to the kinetic energy of the energy dissipation rod 57. The energy dissipation rod 57 and the energy dissipation plate 7 realize the second energy dissipation of the voltage transformer body 1.

[0070] The dovetail block 74 or the sliding block 73 between the adjacent two clamping bases can collide with each other, thereby realizing the third energy dissipation of the voltage transformer body 1.

[0071] When the energy dissipation rod 57 rises, the voltage transformer body 1 drives the support plate 2 to descend, the energy dissipation rod 57 collides with the support plate 2, and the fourth energy dissipation of the voltage transformer body 1 is realized.

[0072] After the energy dissipation rod 57 collides with the support plate 2, the energy dissipation rod 57 moves downward, and the energy dissipation plate 7 swings downward, at this time, the arc-shaped compression spring 63 is further compressed to damp and dissipate the residual kinetic energy of the voltage transformer body 1, and the arc-shaped compression spring 63 is further compressed to realize the fifth energy dissipation of the voltage transformer body 1.

[0073] Through the five-stage energy dissipation of the voltage transformer body 1, the effect of high-efficiency buffering and energy dissipation of the voltage transformer body 1 is realized, thereby improving the operation life of the high-speed train roof voltage transformer.

[0074] The above are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, and thus: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A voltage transformer for high-speed railway high-voltage systems, characterized by, Including voltage transformer body (1), the bottom of voltage transformer body (1) is connected with clamping base, clamping base includes: Supporting plate (2) is fixedly connected to the bottom of voltage transformer body (1); Fixed plate (3) is located below supporting plate (2), and fixed plate (3) is used for fixing on high-speed rail roof; Supporting elastic element (4) is connected between supporting plate (2) and fixed plate (3); Arc-shaped tube (5) is fixedly connected to fixed plate (3), one end of arc-shaped tube (5) is fixedly connected with guide tube (51), arc-shaped tube (5) and guide tube (51) are communicated, guide tube (51) is located between supporting plate (2) and fixed plate (3), sliding rod (52) is slidably arranged in guide tube (51), one end of sliding rod (52) is fixedly connected to supporting plate (2); Sliding assembly (6) is slidably arranged in arc-shaped tube (5), closed containing cavity (53) is formed between arc-shaped tube (5) and guide tube (51), containing cavity (53) is inner cavity formed by communication between arc-shaped tube (5) and guide tube (51); Energy dissipation plate (7) is rotatably connected to fixed plate (3), arc-shaped sliding groove (71) is formed in energy dissipation plate (7), arc-shaped tube (5) is arranged in sliding groove (71), energy dissipation plate (7) can rotate along the arc line of arc-shaped tube (5), sliding assembly (6) is connected with energy dissipation plate (7); sliding assembly (6) includes transmission block (61), movable block (62) and arc-shaped compression spring (63), arc-shaped compression spring (63) is connected between transmission block (61) and movable block (62), movable block (62) is located between transmission block (61) and sliding rod (52), transmission block (61) is connected to energy dissipation plate (7), containing cavity (53) is located between movable block (62) and sliding rod (52).

2. The voltage transformer for high-speed high-voltage systems according to claim 1, characterized in that, Letting slot (54) is formed in the wall of arc-shaped tube (5), connecting block (55) is fixedly connected between energy dissipation plate (7) and transmission block (61), connecting block (55) is slidably arranged in letting slot (54).

3. The voltage transformer for high-speed high-voltage systems according to claim 1, characterized in that, Fixed seat (8) is arranged below fixed plate (3), fixed plate (3) is attached to the top of fixed seat (8), clamping groove (821) is formed in the top of fixed seat (8), the bottom of clamping groove (821) is arc surface, arc-shaped tube (5) is attached to the bottom of clamping groove (821), limiting rod (822) is fixedly connected to fixed seat (8), arc-shaped tube (5) is clamped between limiting rod (822) and fixed seat (8), fixed seat (8) is used for fixing on high-speed rail roof.

4. The voltage transformer for high-speed high-voltage systems according to claim 3, characterized in that, The bottom of the energy dissipation plate (7) is slidably connected with an extension plate (72), the bottom of the extension plate (72) is rotatably connected with a sliding block (73), the sliding block (73) is slidably connected with the fixed seat (8), and the clamping base is provided with at least two sliding blocks (73) which can collide with each other between adjacent two clamping bases.

5. The voltage transformer for high-speed high-voltage systems according to claim 3, characterized in that, Both ends of the limiting rod (822) are respectively provided with mounting plates (823) which are fixedly connected with the fixed seat (8), the mounting plates (823) are provided with waist-shaped holes (824), the limiting rod (822) is arranged in the waist-shaped holes (824), and the limiting rod (822) is fixed between the two mounting plates (823) by bolts.

6. The voltage transformer for high-speed high-voltage systems according to claim 1, characterized in that, The accommodating cavity (53) is filled with hydraulic oil.

7. The voltage transformer for high-speed high-voltage systems according to claim 1, characterized in that, The arc-shaped pipe (5) is connected with a limiting pipe (56) away from one end of the guide pipe (51), the limiting pipe (56) is slidably arranged with an energy dissipation rod (57), the energy dissipation rod (57) can impact the bottom of the voltage transformer body (1), and a sealed transmission cavity (58) is formed between the energy dissipation rod (57) and the sliding assembly (6).

8. The voltage transformer for high-speed high-voltage systems according to claim 7, characterized in that, The transmission cavity (58) is used for filling hydraulic oil.

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