Automatic retractable ultra-high voltage AC withstand voltage test platform

Abstract

The present invention relates to an automatically foldable ultra-high voltage AC withstand voltage test platform, which includes a platform body, legs, an electric control unit, a reactor, and a drive unit. A flip connection seat is provided on the platform body, and the device seat is connected to the flip connection seat by pivot rotation. The test platform also includes a cushion block, an elastic buffer, and a support seat, wherein the contact point formed by the elastic buffer and the device seat is located above the contact point formed by the cushion block and the device seat. The present invention can not only ensure the stability of the upright state of the reactor, but also overcome the impact problem on the reactor when flipping and unfolding, reduce the damage rate of the reactor, and also reduce the probability of rollover accidents. In addition, it is easy to implement, the time required for automatic unfolding and folding is short, and it can be transported by vehicle.

Description

Technical Field

[0001] The invention relates to the field of electric power test equipment, and in particular to an automatically retractable ultra-high voltage AC withstand voltage test platform. Background Art

[0002] As we all know, the commissioning, handover test and operation and maintenance related tests before the commissioning of UHV (AC 1000kV, DC ±800, ±1100kV) transmission and transformation projects are all carried out on-site at the UHV substation.

[0003] However, the output voltage of the test equipment is usually above 1000kV, and its composition is complex and bulky. Therefore, the complete set of power test equipment is required to realize an integrated mobile platform (usually 6-10 meters in length and weighing more than 10 tons) to facilitate transportation and on-site use. However, when the platform is transported to the site, it needs to be unloaded on the ground for use, and it needs to be loaded after the test is completed, all of which rely on large crane operations, which is extremely inconvenient on site.

[0004] At the same time, safety regulations do not allow cranes to enter operating substations, so the power outage time needs to be increased.

[0005] In order to solve the above technical problems, the usual idea is to provide the platform with a set of laterally deployable hydraulic support legs to lift the platform for loading and unloading vehicles, and then use the hydraulic device to lift the bracket and the reactor from a horizontal state to a vertical state, and then retract the bracket through the hydraulic cylinder. Only then can the test begin. After the test is completed, it is still necessary to lift the bracket first and then retract the entire equipment.

[0006] Therefore, the above test platform has the following technical defects: 1) Due to the setting of the bracket, the test needs to be raised first and then reset and retracted. Therefore, the test preparation time is relatively long. At the same time, after the test is completed, the bracket still needs to be lifted first and then the entire device is retracted. Obviously, the whole operation process is cumbersome;

[0007] 2) During the lifting process of the reactor, the bracket and the reactor are generally fixed relatively by external parts (such as clamps). As a result, after the bracket is erected, the removal and installation of the clamp is very inconvenient and requires manual disassembly and assembly, which poses a great safety hazard.

[0008] 3) After the reactor is unfolded, it is difficult to ensure that it is in a vertical state. At the same time, if it is flipped too quickly, it will cause impact on the reactor at the moment of erection. In addition, the reactor itself is relatively high, so the stability is obviously insufficient, which can easily cause damage to the reactor or a rollover accident. Summary of the invention

[0009] The technical problem to be solved by the present invention is to provide an improved automatic retractable ultra-high voltage AC withstand voltage test platform.

[0010] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0011] An automatically retractable ultra-high voltage AC withstand voltage test platform, comprising a platform body that can be erected on the bottom plate of a carriage of a transport vehicle, legs that can be deployed or retracted and are arranged on the side of the platform body, an electric control unit arranged on the head of the platform body, a reactor with a device seat installed, and a driving unit that drives the reactor to be deployed or retracted.

[0012] A flip connection seat is provided on the platform body, a notch is formed on the flip connection seat to avoid the movement of the device seat, and the notch extends to the rear of the platform body to form a support portion, the device seat is connected to the flip connection seat by a pivot extending along the width direction of the platform body, and the test platform also includes a pad arranged at the rear of the platform body, an elastic buffer arranged on the platform body and capable of buffering support at the bottom of the device seat, and a support seat arranged between the head and the tail of the platform body, wherein the contact point formed by the elastic buffer and the device seat is located above the contact point formed by the pad and the device seat.

[0013] When the reactor is unfolded, the device base is horizontally erected on the supporting part, the pad and the elastic buffer of the flip connection base; when the reactor is folded, the reactor is horizontally arranged on the supporting base and the flip connection base.

[0014] Preferably, the support seat comprises a seat body, an arc-shaped support portion formed on the seat body and opening upward, and a locking component detachably arranged on the seat body or the arc-shaped support portion and capable of buckling the horizontally arranged reactor on the arc-shaped support portion. By setting the locking component, the stability of the reactor when folded is increased, so as to facilitate the transportation of the test platform.

[0015] Furthermore, the distance from the bottom of the arc-shaped support part to the platform body is greater than the distance from the pivot to the platform body. In this way, when the reactor is in a lying position, the reactor is tilted, which has the following advantages: 1. The length of the entire platform body is shortened for easy transportation; 2. It is easy to implement the upright flipping of the reactor.

[0016] According to a specific implementation and preferred aspect of the present invention, the elastic buffer includes a buffer seat located between the cushion block and the flip connection seat and fixedly arranged on the platform body, and a buffer head arranged on the buffer seat capable of up and down buffering movement, wherein when the reactor is close to the unfolded state, the buffer head first contacts the flip connection seat to form a buffered flip until it is erected on the cushion block. Under the buffering contact of the buffer head, the impact of the reactor at the moment of erection is avoided, the damage rate of the reactor is reduced, and the probability of rollover accidents is also reduced.

[0017] Preferably, there are two groups of elastic buffers, which are correspondingly arranged on opposite sides of the platform body, and the touch pieces correspond to the elastic buffers one by one and are arranged at the bottoms of opposite sides of the flip connection seat, wherein the upper part of the buffer head is formed with a matching groove with an opening facing upward, and the touch piece has a touch rod that can be inserted into the matching groove and matched with it. The matching docking of the touch rod and the open matching groove can not only stabilize the flipping movement of the stabilizer seat, but also ensure the formation of a stable buffer force.

[0018] Specifically, the buffer head adopts hydraulic pressure for buffering.

[0019] According to a specific implementation and preferred aspect of the present invention, the support portion of the notch is tilted from top to bottom into the flip connection seat, and the drive unit includes telescopic cylinders located on opposite sides of the width direction of the platform body and the two ends are rotatably connected to the platform body and the device seat, wherein the telescopic cylinders are arranged in parallel and synchronously, and the two telescopic cylinders are symmetrically arranged on opposite sides of the device seat about the middle of the reactor. Here, the tilting of the support portion can form a more solid support, thereby extending the service life.

[0020] In this example, the telescopic cylinder is driven hydraulically.

[0021] According to a specific implementation and preferred aspect of the present invention, the reactor includes a device body arranged on a device seat, and an insulating pull rod used to connect the device body away from the device seat end and the opposite side where the pivot is located to form a closed triangle, wherein the insulating pull rod has an adjustable length and can be removed from the device seat and the device body. Here, the stability of the reactor itself is improved by the provision of the insulating pull rod.

[0022] Preferably, there are at least two flip connection seats, which are aligned along the width direction of the platform body and arranged on opposite sides of the platform body; the pad block includes a pad body fixed at the rear of the platform body and a pad skin arranged on the pad body. Specifically, the pad skin can also play a certain shock-absorbing effect.

[0023] At the same time, there are two cushion blocks which are correspondingly arranged on both sides in the width direction of the platform body.

[0024] In addition, the electric control unit includes an operating cabin, an electric wire reel located in the operating cabin, an excitation transformer, and a variable frequency power supply. The operating cabin is formed with doors that can be opened and closed on both sides of the width direction of the platform body. The high-voltage wire is connected to the reactor from the inside or bottom of the platform body. The ultra-high voltage AC withstand voltage test platform also includes accessory boxes arranged on opposite sides of the support seat. Through the above layout, it has the following advantages: 1. There are no exposed wires on the surface of the platform, and all high-voltage wires are concealed, which is safer and more reliable; 2. Except for the reactor assembly, the rest of the power equipment is installed in the operating cabin, which is rainproof and dustproof, and easy to maintain; 3. Through the head and tail settings of the platform body, it is relatively balanced, especially after the reactor is deployed, it is also relatively stable, reducing the occurrence of rollover accidents.

[0025] Preferably, there are multiple groups of legs, one of which is located at the head of the platform body, one is located at the tail of the platform body, and the remaining groups are distributed between the head and the tail of the platform body.

[0026] Each set of legs has two legs, which are symmetrically arranged on opposite sides of the platform body, wherein each leg includes a first arm that can be telescopically extended horizontally, and a second arm that can be lifted up and down and is located at the outer end of the first arm.

[0027] The pressure test platform also includes a transport vehicle. During transportation, multiple sets of legs are folded and erected on the floor of the transport vehicle's carriage from the bottom of the platform body; during testing, when multiple sets of legs flatten the platform body, the bottom of the platform body is erected on the floor of the carriage, or the platform body is detached from the floor of the carriage. At this time, the carriage of the transport vehicle can freely enter and exit the area below the platform body.

[0028] Due to the implementation of the above technical solution, the present invention has the following advantages compared with the prior art:

[0029] The present invention can be unfolded by flipping the driver seat on the basis of safety, reliability and simple structure, and does not require a bracket, a crane and a stopped substation. The supporting level formed by the supporting part, the cushion block and the elastic buffer of the flip connection seat is erected above the platform body to ensure the stability of the upright state of the reactor. At the same time, under the elastic buffering of the elastic buffer, the impact problem on the reactor caused by flipping and unfolding is overcome, the damage rate of the reactor is reduced, and the probability of rollover accidents is also reduced. In addition, the implementation is convenient, the time required for automatic unfolding and folding is short, and it can be transported by vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a front view schematic diagram of the test platform of the present invention when it is transported on a vehicle;

[0031] Figure 2 for Figure 1 The enlarged schematic diagram at A in the middle;

[0032] Figure 3 for Figure 2 A top view schematic diagram of

[0033] Figure 4 It is a schematic diagram of the structure of the test platform of the present invention when it is deployed on a vehicle;

[0034] Figure 5 for Figure 4 The enlarged schematic diagram of point B in the middle;

[0035] Figure 6 It is a structural schematic diagram of the test platform of the present invention in a landing test state;

[0036] Among them: 1. Platform body;

[0037] 2. Outrigger; 2a. First boom; 2b. Second boom;

[0038] 3. Power control unit; 30. Operation cabin; 30a. Cabin door; 31. Electric wire reel; 32. Excitation transformer; 33. Variable frequency power supply;

[0039] 4. Reactor; 40. Device base; 41. Device body; 42. Insulating pull rod;

[0040] 5. Driving unit; 50. Telescopic cylinder;

[0041] 6. Flip connection seat; 60. Notch; 61. Support part;

[0042] 7. Pad block; 70. Pad body; 71. Pad skin;

[0043] 8. elastic buffer; 80. buffer seat; 81. buffer head; 81a. matching groove; 82. touch member; 82a. touch rod;

[0044] 9. Support seat; 90. Seat body; 91. Arc-shaped support portion; 92. Locking member;

[0045] s, pivot; g, fixed seat; Y, transport vehicle. DETAILED DESCRIPTION

[0046] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0047] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0048] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0049] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] In the invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0051] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0052] like Figure 1 As shown, the automatic retractable ultra-high voltage AC withstand voltage test platform of this embodiment includes a platform body 1 that can be erected on the floor of a transport vehicle, legs 2 that can be deployed or retracted and are arranged on the side of the platform body 1, an electric control unit 3 arranged at the head of the platform body 1, an inductor 4 with a device seat 40 installed, and a driving unit 5 that drives the inductor 4 to be deployed or retracted.

[0053] Specifically, a flip connection seat 6 is provided on the platform body 1 , wherein there are two flip connection seats 6 , which are aligned in the width direction of the platform body 1 and distributed on opposite sides of the platform body 1 .

[0054] Combination Figure 2 As shown, a notch 60 is formed on the flip connection seat 6 to allow the avoider seat 40 to move, and the notch 60 extends toward the rear of the platform body 1 to form a supporting portion 61 .

[0055] Specifically, the support portion 61 of the notch 60 is tilted from top to bottom toward the inside of the flip connection seat 6 . Here, the tilting of the support portion can form a more solid support, thereby extending the service life.

[0056] In this example, the device seat 40 is rotatably connected to the flip connection seat 6 via a pivot s extending along the width direction of the platform body 1. The test platform also includes a cushion block 7 arranged at the tail of the platform body 1, an elastic buffer 8 arranged on the platform body 1 and capable of buffering support at the bottom of the device seat 40, and a support seat 9 arranged between the head and tail of the platform body 1, wherein the contact point formed by the elastic buffer 8 and the device seat 40 is located above the contact point formed by the cushion block 7 and the device seat 40, so that during the flipping process, the elastic buffer 8 can first contact the device seat 40.

[0057] Specifically, the reactor 4 includes a device body 41 disposed on a device base 40, and an insulating rod 42 used to connect the device body 41 away from the device base end and the opposite side where the pivot s is located to form a closed triangle, wherein the insulating rod 42 has an adjustable length and can be detached from the device base 40 and the device body 41. Here, the stability of the reactor itself is improved by the provision of the insulating rod.

[0058] The driving unit 5 includes telescopic cylinders 50 located on opposite sides of the platform body 1 in the width direction and with both ends rotatably connected to the platform body 1 and the device base 40, wherein the telescopic cylinders 50 are arranged in parallel and telescopically synchronously, and the two telescopic cylinders 50 are symmetrically arranged on opposite sides of the device base 40 about the middle part of the reactor 4.

[0059] In this example, the telescopic cylinder 50 is driven by hydraulic pressure. Meanwhile, a fixing seat g is provided on the platform body 1 and the device base 40, and both ends of the telescopic cylinder 50 are rotatably connected to the fixing seat g.

[0060] Combination Figure 3 As shown, in this example, the elastic buffer 8 includes a buffer seat 80 located between the cushion block 7 and the flip connection seat 6 and fixedly arranged on the platform body 1, and a buffer head 81 arranged on the buffer seat 80 to be able to move up and down in a buffering manner, wherein when the reactor 4 is close to the unfolded state, the buffer head 81 first contacts the flip connection seat 6 to form a buffered flip until it is mounted on the cushion block. Under the buffering contact of the buffer head, the impact of the reactor is avoided at the moment of erection, the damage rate of the reactor is reduced, and the probability of rollover accidents is also reduced.

[0061] The cushion block 7 comprises a cushion body 70 fixed to the rear of the platform body 1 and a cushion skin 71 arranged on the cushion body 70. Specifically, the cushion skin can also play a certain shock-absorbing effect.

[0062] In this example, there are two cushion blocks 7 which are correspondingly arranged on both sides of the platform body 1 in the width direction.

[0063] There are two groups of elastic buffers 8, which are correspondingly arranged on opposite sides of the platform body 1. The touch members 82 correspond to the elastic buffers 8 one by one and are arranged at the bottoms of opposite sides of the flip connection seat 6. The upper part of the buffer head 81 is formed with a matching groove 81a with an opening facing upward. The touch member 82 has a touch rod 82a that can be inserted into the matching groove 81a and matched with it. The matching and docking of the touch rod 82a and the open matching groove 81a can not only stabilize the flipping movement of the stabilizer seat, but also ensure the formation of a stable buffer force.

[0064] Specifically, the buffer head 81 uses hydraulic pressure for buffering, and the principle is simple: a bearing pressure is set, and once the actual force is greater than the set bearing pressure, pressure relief begins, and a buffer is formed during the pressure relief process.

[0065] The support seat 9 includes a seat body 90, an arc-shaped support portion 91 formed on the seat body 90 and opening upward, and a locking component 92 detachably arranged on the seat body 90 and capable of buckling the horizontally arranged reactor on the arc-shaped support portion 91. The locking component is provided to increase the stability of the reactor when it is folded, so as to facilitate the transportation of the test platform.

[0066] The distance from the bottom of the arc-shaped support part 91 to the platform body 1 is greater than the distance from the pivot s to the platform body 1. In this way, when lying down, the reactor is tilted, which has the following advantages: 1. shortening the length of the entire platform body for easy transportation; 2. facilitating the vertical flipping of the reactor.

[0067] As for the locking component 92, a commonly used bandage or a clamp can be used.

[0068] Combination Figure 4 and Figure 5 As shown, in this example, when the reactor 4 is unfolded, the device base 40 is horizontally mounted on the support portion 61, the pad 7, and the elastic buffer 8 of the flip connection seat; when the reactor 4 is folded, the reactor 4 is horizontally mounted on the support seat 9 and the flip connection seat 6.

[0069] The electric control unit 3 includes an operating cabin 30, an electric cable drum 31 located in the operating cabin 30, an excitation transformer 32, and a variable frequency power supply 33. The operating cabin 30 is formed with hatches 30a that can be opened and closed on both sides of the width direction of the platform body 1. The high-voltage line is connected to the reactor 4 from the inside or bottom of the platform body 1. The pressure test platform also includes accessory boxes arranged on opposite sides of the support seat 9. Through the above layout, it has the following advantages: 1. There are no exposed wires on the surface of the platform, and all high-voltage lines are concealed, which is safer and more reliable; 2. Except for the reactor assembly, the rest of the power equipment is installed in the operating cabin, which is rainproof and dustproof, and easy to maintain; 3. Through the head and tail settings of the platform body, it is relatively balanced, especially after the reactor is deployed, it is also relatively stable, reducing the occurrence of rollover accidents.

[0070] In this example, there are three groups of legs 2 , one group is located at the head of the platform body 1 , one group is located at the tail of the platform body 1 , and the remaining group is located between the head and the tail of the platform body 1 .

[0071] Each group of legs 2 has two legs, which are symmetrically arranged on opposite sides of the platform body 1, wherein each leg 2 includes a first arm 2a that can be telescopically extended and unfolded horizontally, and a second arm 2b that can be lifted up and down and is located at the outer end of the first arm 2a.

[0072] Specifically, the first arms 2a of the three groups of legs 2 are first extended horizontally outward, and then the second arms 2b are extended vertically downward until the lower end of the second arms 2b flattens the platform body 1, so that the entire platform body 1 is erected on the ground.

[0073] At the same time, in this example, a storage cavity is formed on the side of the platform body 1, and the legs 2 can be retracted into the storage cavity, so that the legs do not cause obstacles to the loading of the transport vehicle.

[0074] The pressure test platform also includes a transport vehicle Y. When transporting, the multiple sets of legs 2 are folded and the bottom of the platform body 1 is erected on the bottom plate of the carriage of the transport vehicle Y. When testing, the multiple sets of legs 2 flatten the platform body 1, and the bottom of the platform body 1 is erected on the bottom plate of the carriage, or the platform body 1 is separated from the bottom plate of the carriage. Figure 6 As shown, at this time, the carriage of the transport vehicle Y can freely enter and exit the area below the platform body 1.

[0075] Similarly, Figure 6 After the experiment is completed in this state, the transport vehicle Y reverses from the head of the platform body 1 to the tail, and the power control unit 3 is set close to the front of the vehicle. Then the reactor 4 is laid on the support seat 9 and the flip connecting seat 6, and the locking component 92 is used to relatively lock them. Then the platform body 1 is lowered to the floor of the car, the legs 2 are folded, and the car door is closed to realize the shift of the test platform.

[0076] In addition, the ultra-high voltage AC withstand voltage test platform also includes accessory boxes x arranged on opposite sides of the support seat 9. A full and reasonable layout makes full use of the area of ​​the platform body 1 to maximize the utilization rate of the platform body 1, which is conducive to the miniaturization of the platform body 1.

[0077] The above detailed description of the present invention is intended to enable persons familiar with the art to understand the contents of the present invention and implement them. It does not limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatically retractable ultra-high voltage AC withstand voltage test platform, comprising a platform body that can be erected on the floor of a transport vehicle, legs that can be deployed or retracted and are arranged on the side of the platform body, an electric control unit arranged on the head of the platform body, a reactor with a device seat installed, and a driving unit that drives the reactor to deploy or retract, characterized in that: A flip connection seat is provided on the platform body, and a notch is formed on the flip connection seat to avoid the movement of the device seat, and the notch extends toward the rear of the platform body to form a supporting portion, and the supporting portion of the notch is inclined from top to bottom toward the inside of the flip connection seat; the device seat is connected to the flip connection seat by a pivot extending along the width direction of the platform body. The automatically retractable ultra-high voltage AC withstand voltage test platform also includes a pad arranged at the rear of the platform body, an elastic buffer arranged on the platform body and capable of buffering support at the bottom of the device seat, and a support seat arranged between the head and tail of the platform body, the contact formed by the elastic buffer and the device seat is located above the contact formed by the pad and the device seat, and the elastic buffer includes a fixed device located between the pad and the flip connection seat A buffer seat is arranged on the platform body, and a buffer head is arranged on the buffer seat so as to be able to move up and down with buffering, wherein a matching groove with an opening facing upward is formed on the upper part of the buffer head, and a touch piece corresponds to an elastic buffer piece one by one and is arranged at the bottom of the opposite sides of the flip connection seat, and the touch piece has a touch rod that can be inserted into the matching groove and matched with it; when the reactor is close to the unfolded state, the buffer head first contacts the flip connection seat to form a buffering flip until it is mounted on the pad; the pad includes a pad body fixed at the tail of the platform body and a pad skin arranged on the pad body; when the reactor is unfolded, the device seat is horizontally mounted on the support part, the pad block and the elastic buffer piece of the flip connection seat; when the reactor is folded, the reactor is horizontally mounted on the support seat and the flip connection seat.

2. The automatic retractable ultra-high voltage AC withstand voltage test platform according to claim 1 is characterized in that: The support seat comprises a seat body, an arc-shaped support portion formed on the seat body and opening upward, and a locking component detachably arranged on the seat body or the arc-shaped support portion and capable of buckling the horizontally arranged reactor on the arc-shaped support portion.

3. The automatic retractable ultra-high voltage AC withstand voltage test platform according to claim 2 is characterized in that: The distance from the bottom of the arc-shaped support portion to the platform body is greater than the distance from the pivot to the platform body.

4. The automatic retractable ultra-high voltage AC withstand voltage test platform according to claim 1 is characterized in that: There are two groups of elastic buffers, which are correspondingly arranged on two opposite sides of the platform body.

5. The automatic retractable ultra-high voltage AC withstand voltage test platform according to claim 1 is characterized in that: The driving unit includes telescopic cylinders located on opposite sides of the platform body in the width direction and whose two ends are rotatably connected to the platform body and the base respectively, wherein the telescopic cylinders are arranged in parallel and telescopically synchronously, and the two telescopic cylinders are symmetrically arranged on opposite sides of the base about the middle of the reactor.

6. The automatic retractable ultra-high voltage AC withstand voltage test platform according to claim 1 is characterized in that: The reactor comprises a device body arranged on the device base, and an insulating pull rod used to connect the end of the device body away from the device base and the opposite side of the pivot to form a closed triangle, wherein the length of the insulating pull rod is adjustable and can be removed from the device base and the device body.

7. The automatic retractable ultra-high voltage AC withstand voltage test platform according to claim 1 is characterized in that: There are at least two flip connection seats, which are aligned along the width direction of the platform body and arranged on opposite sides of the platform body.

8. The automatic retractable ultra-high voltage AC withstand voltage test platform according to claim 1 is characterized in that: The electric control unit includes an operating cabin, an electric wire reel located in the operating cabin, an excitation transformer, and a variable frequency power supply, wherein the operating cabin is formed with doors that can be opened and closed on both sides of the width direction of the platform body, and the high-voltage line is connected to the reactor from the inside or bottom of the platform body. The ultra-high voltage AC withstand voltage test platform also includes accessory boxes arranged on opposite sides of the support base.

9. The automatic retractable ultra-high voltage AC withstand voltage test platform according to claim 1 is characterized in that: There are multiple groups of legs, one group is located at the head of the platform body, one group is located at the tail of the platform body, and the remaining groups are distributed between the head and the tail of the platform body.

10. The automatic retractable ultra-high voltage AC withstand voltage test platform according to claim 9, characterized in that: Each group of legs has two legs, which are symmetrically arranged on opposite sides of the platform body.

11. The automatic retractable ultra-high voltage AC withstand voltage test platform according to claim 10, characterized in that: Each leg comprises a first arm which is telescopically extended and unfolded horizontally, and a second arm which is located at the outer end of the first arm and can be lifted up and down.

12. The automatic retractable ultra-high voltage AC withstand voltage test platform according to claim 11, characterized in that: The automatically retractable ultra-high voltage AC withstand voltage test platform also includes a transport vehicle. During transportation, multiple groups of the legs are retracted and erected on the car floor of the transport vehicle from the bottom of the platform body. During testing, when multiple groups of the legs flatten the platform body, the bottom of the platform body is erected on the car floor, or the platform body is detached from the car floor, at which time the transport vehicle's car can freely enter and exit the area below the platform body.

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