CN212255525U - Automatic folding and unfolding type ultrahigh voltage alternating current withstand voltage test platform - Google Patents

Abstract

The utility model relates to an automatic folding and unfolding formula superhigh pressure exchanges withstand voltage test platform, it includes platform body, landing leg, establishes electric power and controls unit, reactor, drive unit, is equipped with the upset connecting seat on the platform body, and the seat passes through the pivot and connects on the upset connecting seat, and test platform still includes cushion, springiness cushioning spare and supporting seat, and wherein the contact that springiness cushioning spare and seat formed is located the top that cushion and seat formed the contact. The utility model discloses can be safe, reliable and simple structure and need not on the basis of bracket, crane and the bring to rest transformer substation, not only guarantee the stability of reactor erect state, when overcoming the upset moreover and expand, cause the impact problem to the reactor, reduce the spoilage of reactor, also reduce the probability that takes place the accident of turning on one's side simultaneously, in addition, implement conveniently, automatic expansion and draw in the time of needs in short, can supply on-vehicle transportation moreover.

Description

Automatic folding and unfolding type ultrahigh voltage alternating current withstand voltage test platform

Technical Field

The utility model relates to an electric power test equipment field, concretely relates to automatic folding and unfolding formula superhigh pressure exchanges withstand voltage test platform.

Background

As is well known, debugging, handover test and related test of operation and maintenance before the operation of extra-high voltage (alternating current 1000kV, direct current +/-800 and +/-1100 kV) power transmission and transformation projects are all carried out on the site of an extra-high voltage transformer substation.

However, the output voltage of the test equipment is usually over 1000kV, and the composition is complex and bulky, so that the complete set of electric test equipment is required to realize an integrated mobile platform (length is usually 6-10 m, and weight is over 10 tons) for convenient transportation and field use. However, after the platform is carried to the site, the platform needs to be unloaded and used on the ground, and after the test is finished, the platform needs to be loaded, so that the platform depends on the operation of a large crane, and the site is very inconvenient.

Meanwhile, for a transformer substation which is in operation, safety regulations do not allow a crane to enter the station for operation, so that the power failure time needs to be increased.

In order to solve the technical problems, a set of transversely-deployable hydraulic support legs is usually arranged on a platform to jack the platform to realize loading and unloading, then a bracket and a reactor are lifted from a horizontal state to a vertical state through a hydraulic device, then the bracket is retracted through a hydraulic cylinder, a test can be started at the moment, and after the test is completed, the bracket still needs to be lifted firstly, and then the whole equipment is retracted.

Therefore, the above test platform has the following technical defects:

1) due to the arrangement of the bracket, during the test, the bracket needs to be lifted first and then reset and retracted, so that the test preparation time is long, and meanwhile, after the test is completed, the bracket still needs to be lifted first and then the whole equipment is retracted, obviously, the whole operation process is complicated;

2) in the lifting process of the reactor, the bracket and the reactor are generally fixed relatively by adopting external connectors (such as hoops), so that the hoops are very inconvenient to disassemble and assemble after the bracket is erected, and the hoops need to be manually disassembled and assembled, so that the reactor has great potential safety hazards;

3) the reactor expandes the back, is difficult to guarantee to be in the vertical state, if the upset is too fast simultaneously, in the twinkling of an eye of erectting, can cause the impact of reactor, in addition the reactor self highly higher, consequently, stability is obvious not enough, causes the damage of reactor or takes place the accident of turning on one's side very easily.

Disclosure of Invention

The utility model aims to solve the technical problem that a modified automatic folding and unfolding formula superhigh pressure exchanges withstand voltage test platform is provided.

For solving the technical problem, the utility model discloses a following technical scheme:

an automatic folding type ultrahigh voltage alternating current withstand voltage test platform comprises a platform body, supporting legs, an electric power control unit, a reactor and a driving unit, wherein the platform body can be erected on a carriage bottom plate of a transport vehicle, the supporting legs are arranged on the side edges of the platform body and can be unfolded or folded, the electric power control unit is arranged at the head of the platform body, the reactor is provided with a seat, the driving unit is used for driving the reactor to be unfolded or folded,

the test platform also comprises a cushion block arranged at the tail part of the platform body, an elastic buffer piece arranged on the platform body and capable of being supported at the bottom of the seat in a buffering way, and a supporting seat arranged between the head part and the tail part of the platform body, wherein a contact formed by the elastic buffer piece and the seat is positioned above a contact formed by the cushion block and the seat,

when the reactor is unfolded, the seat is horizontally erected on the supporting part, the cushion block and the elastic buffer part of the overturning connecting seat; when the reactor is folded, the reactor is horizontally arranged on the supporting seat and the overturning connecting seat.

Preferably, the support base includes a base body, an arc-shaped support portion formed on the base body and having an upward opening, and a locking member detachably provided on the base body or the arc-shaped support portion and capable of pressing the reactor lying on the arc-shaped support portion. The arrangement of the locking component increases the stability of the reactor during folding so as to facilitate the transportation of the test platform.

Further, the distance from the bottom of the arc-shaped supporting part to the platform body is greater than the distance from the pivot to the platform body. Thus, when the electric reactor is in a lying position, the electric reactor is obliquely arranged, and the electric reactor has the advantages that: 1. the length of the whole platform body is shortened, and transportation is facilitated; 2. the reactor is convenient to erect and turn over.

According to a specific implementation and preferred aspect of the utility model, springiness cushioning spare including be located between cushion and the upset connecting seat and fixed the buffer seat that sets up on the platform body, can set up the buffer head on the buffer seat with up-and-down cushioning motion, wherein when the reactor is close the expansion state, the buffer head forms buffering formula upset with the contact of upset connecting seat earlier, until erectting on the cushion. Under the buffering contact of buffering head, avoid causing the impact of reactor in the instant of erectting, reduce the spoilage of reactor, also reduce the probability that takes place the accident of turning on one's side simultaneously.

Preferably, elastic buffer spare has two sets ofly, and corresponds the setting in the relative both sides of platform body, and touching piece and elastic buffer spare one-to-one just set up in the bottom of the relative both sides of upset connecting seat, and wherein the upper portion of buffer head is formed with the cooperation groove of opening up, and touching piece has the touch pole that can insert cooperation groove and its accordant connection. The contact rod is in butt joint with the opening matching groove in a matching mode, so that the stabilizer base can perform overturning movement, and stable buffering force can be guaranteed.

Specifically, the buffer head adopts hydraulic pressure for buffering.

According to the utility model discloses a concrete implementation and preferred aspect, the supporting part top-down of breach sets up to the slope in the upset connecting seat, drive unit including the relative both sides that are located platform body width direction and both ends rotate respectively to be connected the platform body with telescoping cylinder on the seat, wherein the parallel and synchronous flexible setting of telescoping cylinder, and two telescoping cylinders set up the relative both sides at the seat about reactor middle part symmetry. Herein, the inclined position of the supporting part can form firm support, and further the service life is prolonged.

In this example, the driving method of the telescopic cylinder is hydraulic pressure.

According to a specific implementation and preferred aspect of the utility model, the reactor includes the ware body that sets up on the seat and is used for keeping away from the ware body and seat tip and pivot place opposite side and be connected the insulating pull rod that forms a closed triangle-shaped, and wherein the length of insulating pull rod is adjustable, and can from the seat with dismantle the setting on the ware body. Here, the stability of the reactor itself is improved by the arrangement of the insulating tie rod.

Preferably, at least two overturning connecting seats are arranged on two opposite sides of the platform body in an aligning manner along the width direction of the platform body; the cushion block comprises a cushion body fixed at the tail part of the platform body and a cushion skin arranged on the cushion body. Specifically, the cushion leather can also play a certain shock absorption effect.

Simultaneously, the cushion has two and corresponds the setting in platform body width direction's both sides.

In addition, electric power control unit includes the operation cabin, is located electric drum, excitation transformer, variable frequency power supply of operation cabin, and wherein the operation cabin is formed with the hatch door that can open and closed from the both sides of platform body width direction, and the high-voltage line communicates with the reactor from inside or the bottom of platform body, and the withstand voltage test platform is still including setting up the accessory case in the relative both sides of supporting seat to the superhigh pressure. With the above layout, it has the following advantages: 1. the surface of the platform is not exposed, and all high-voltage wires are concealed and wired, so that the platform is safer and more reliable; 2. except the reactor assembly, other power equipment are arranged in the operation cabin, so that the operation cabin is rainproof and dustproof, and is convenient to maintain; 3. the platform body is arranged at the head and the tail, so that the platform body is relatively balanced and is relatively stable particularly after the reactor is unfolded, and the occurrence of side turning accidents is reduced.

Preferably, the support legs have a plurality of groups, one group is located at the head part of the platform body, the other group is located at the tail part of the platform body, the rest groups are distributed between the head part and the tail part of the platform body at intervals,

each group of two supporting legs are symmetrically arranged at two opposite sides of the platform body, wherein each supporting leg comprises a first arm rod which is horizontally stretched and extended in a telescopic way and a second arm rod which is positioned at the outer end part of the first arm rod and can be lifted up and down,

the pressure test platform also comprises a transport vehicle, when in transport, the plurality of groups of supporting legs are folded and erected on a carriage bottom plate of the transport vehicle from the bottom of the platform body; when experimental, when this platform body was propped flat to the multiunit landing leg, platform body bottom was erect on the carriage bottom plate, perhaps the platform body breaks away from the carriage bottom plate, and at this moment, the carriage of transport vechicle can freely pass in and out platform body below region.

Due to the implementation of the above technical scheme, compared with the prior art, the utility model have the following advantage:

the utility model can be unfolded through the overturning of the driver seat on the basis of safety, reliability and simple structure without a bracket, a crane and a stop operation transformer substation, and is erected above the platform body at the supporting part formed by the supporting part of the overturning connecting seat, the cushion block and the elastic buffer part, so as to ensure the stability of the reactor in the vertical state; meanwhile, under the elastic buffering of the elastic buffering part, the problem of impact on the reactor caused by overturning and unfolding is solved, the damage rate of the reactor is reduced, and meanwhile, the probability of rollover accidents is also reduced.

Drawings

FIG. 1 is a schematic front view of the test platform of the present invention during vehicle transportation;

FIG. 2 is an enlarged view of the point A in FIG. 1;

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a schematic structural view of the test platform of the present invention when it is deployed on board;

FIG. 5 is an enlarged view of the point B in FIG. 4;

fig. 6 is a schematic structural view of a landing test state of the test platform of the present invention;

wherein: 1. a platform body;

2. a support leg; 2a, a first arm lever; 2b, a second arm lever;

3. a power manipulation unit; 30. an operation cabin; 30a, a hatch door; 31. An electric wire coil; 32. an excitation transformer; 33. a variable frequency power supply;

4. a reactor; 40. a base; 41. a device body; 42. an insulating pull rod;

5. a drive unit; 50. a telescopic cylinder;

6. turning over the connecting seat; 60. a notch; 61. a support portion;

7. cushion blocks; 70. a pad body; 71. cushion leather;

8. an elastic buffer member; 80. a buffer seat; 81. a buffer head; 81a, a matching groove; 82. a touch member; 82a, a touch bar;

9. a supporting seat; 90. a seat body; 91. an arc-shaped support part; 92. a locking member;

s, a pivot; g. a fixed seat; and Y, a transport vehicle.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description thereof. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

As shown in fig. 1, the automatic folding and unfolding ultrahigh voltage ac voltage withstand test platform of the present embodiment includes a platform body 1 capable of being erected on a platform floor of a transport vehicle, support legs 2 capable of being unfolded or folded at side edges of the platform body 1, an electric power control unit 3 disposed at a head of the platform body 1, a reactor 4 having a seat 40 mounted thereon, and a driving unit 5 for driving the reactor 4 to be unfolded or folded.

Specifically, be equipped with upset connecting seat 6 on platform body 1, wherein upset connecting seat 6 has two, and the distribution that aligns in platform body 1 width direction is in the relative both sides of platform body 1.

As shown in fig. 2, a notch 60 for movement of the evacuator seat 40 is formed on the flip connection seat 6, and the notch 60 extends to the tail of the platform body 1 to form a support portion 61.

Specifically, the supporting portion 61 of the notch 60 is obliquely arranged in the turnover connecting seat 6 from top to bottom, and the oblique arrangement of the supporting portion can form firm support, so that the service life is prolonged.

In this example, the seat 40 is rotatably connected to the overturning connecting seat 6 through a pivot s extending along the width direction of the platform body 1, the test platform further comprises a cushion block 7 arranged at the tail part of the platform body 1, an elastic buffer 8 arranged on the platform body 1 and capable of being supported at the bottom of the seat 40 in a buffering manner, and a supporting seat 9 arranged between the head part and the tail part of the platform body 1, wherein a contact point formed by the elastic buffer 8 and the seat 40 is positioned above a contact point formed by the cushion block 7 and the seat 40, so that the elastic buffer 8 can be firstly contacted with the seat 40 in the overturning process.

Specifically, the reactor 4 includes a reactor body 41 disposed on the holder 40, and an insulating rod 42 for connecting an end of the reactor body 41 away from the holder and an opposite side of the pivot s to form a closed triangle, wherein the insulating rod 42 has an adjustable length and is detachably disposed from the holder 40 and the reactor body 41. Here, the stability of the reactor itself is improved by the arrangement of the insulating tie rod.

The driving unit 5 comprises telescopic cylinders 50 which are positioned on two opposite sides of the platform body 1 in the width direction and two end parts of which are respectively connected to the platform body 1 and the base 40 in a rotating manner, wherein the telescopic cylinders 50 are arranged in parallel and synchronously telescopic, and the two telescopic cylinders 50 are symmetrically arranged on two opposite sides of the base 40 relative to the middle part of the reactor 4.

In this example, the telescopic cylinder 50 is driven by hydraulic pressure. Meanwhile, the platform body 1 and the seat 40 are respectively provided with a fixed seat g, and two end parts of the telescopic cylinder 50 are respectively connected with the fixed seats g in a rotating manner.

Referring to fig. 3, in this embodiment, the elastic buffer member 8 includes a buffer seat 80 located between the cushion block 7 and the flip connecting seat 6 and fixedly disposed on the platform body 1, and a buffer head 81 disposed on the buffer seat 80 in a vertically buffering manner, wherein when the reactor 4 is in a close-to-open state, the buffer head 81 first contacts with the flip connecting seat 6 to form a buffering type flip until the reactor is erected on the cushion block. Under the buffering contact of buffering head, avoid causing the impact of reactor in the instant of erectting, reduce the spoilage of reactor, also reduce the probability that takes place the accident of turning on one's side simultaneously.

The cushion block 7 comprises a cushion body 70 fixed at the tail part of the platform body 1 and a cushion skin 71 arranged on the cushion body 70. Specifically, the cushion leather can also play a certain shock absorption effect.

In this embodiment, two spacers 7 are correspondingly disposed on two sides of the platform body 1 in the width direction.

The elastic buffer members 8 are provided with two groups and are correspondingly arranged on two opposite sides of the platform body 1, the touch members 82 and the elastic buffer members 8 are in one-to-one correspondence and are arranged at the bottoms of two opposite sides of the turnover connecting seat 6, wherein the upper part of the buffer head 81 is provided with a matching groove 81a with an upward opening, and the touch members 82 are provided with touch rods 82a which can be inserted into the matching groove 81a to be in matched connection with the matching groove. By the fitting and abutting of the touching lever 82a and the opening fitting groove 81a, not only the turning motion of the stabilizer holder but also a stable damping force can be ensured.

Specifically, the buffer head 81 adopts hydraulic pressure for buffering, and the principle is simple: the pressure is set, once the actual stress is larger than the set bearing pressure, the pressure is released, and the buffer is formed in the pressure releasing process.

The support base 9 includes a base body 90, an arc-shaped support portion 91 formed on the base body 90 and having an upward opening, and a lock member 92 detachably provided on the base body 90 and capable of pressing the reactor lying on the arc-shaped support portion 91. The arrangement of the locking component increases the stability of the reactor during folding so as to facilitate the transportation of the test platform.

The distance from the bottom of the arc-shaped supporting part 91 to the platform body 1 is greater than the distance from the pivot s to the platform body 1. Thus, when the electric reactor is in a lying position, the electric reactor is obliquely arranged, and the electric reactor has the advantages that: 1. the length of the whole platform body is shortened, and transportation is facilitated; 2. the reactor is convenient to erect and turn over.

As for the locking member 92, a conventional bandage or a hoop may be used.

As shown in fig. 4 and 5, in this example, when the reactor 4 is unfolded, the base 40 is horizontally erected on the support portion 61 of the flip connection base, the cushion block 7, and the elastic buffer 8; when the reactor 4 is folded, the reactor 4 is horizontally arranged on the supporting seat 9 and the overturning connecting seat 6.

The electric power control unit 3 comprises an operation cabin 30, an electric wire coil 31 positioned in the operation cabin 30, an excitation transformer 32 and a variable frequency power supply 33, wherein the operation cabin 30 is provided with cabin doors 30a capable of being opened and closed from two sides of the platform body 1 in the width direction, a high-voltage wire is communicated with the reactor 4 from the inside or the bottom of the platform body 1, and the pressure test platform further comprises accessory boxes arranged on two opposite sides of the supporting seat 9. With the above layout, it has the following advantages: 1. the surface of the platform is not exposed, and all high-voltage wires are concealed and wired, so that the platform is safer and more reliable; 2. except the reactor assembly, other power equipment are arranged in the operation cabin, so that the operation cabin is rainproof and dustproof, and is convenient to maintain; 3. the platform body is arranged at the head and the tail, so that the platform body is relatively balanced and is relatively stable particularly after the reactor is unfolded, and the occurrence of side turning accidents is reduced.

In this example, the support legs 2 have three sets, one set is located at the head of the platform body 1, one set is located at the tail of the platform body 1, and the remaining set is located between the head and the tail of the platform body 1.

Every group landing leg 2 has two, and the symmetry sets up in the 1 relative both sides of platform body, and wherein every landing leg 2 all includes the flexible first armed lever 2a that expandes of level, is located the second armed lever 2b that the outer tip of first armed lever 2a can the oscilaltion.

Specifically, the first arm rods 2a of the three groups of supporting legs 2 are firstly unfolded horizontally outwards, and the second arm rods 2b are then extended vertically downwards until the lower end parts of the second arm rods 2b prop and level the platform body 1, so that the whole platform body 1 is erected on the ground.

Meanwhile, in the embodiment, the side edge of the platform body 1 is provided with the containing cavity, and the supporting legs 2 can be contained in the containing cavity, so that the supporting legs can be convenient for boxing the transport vehicle to cause obstacles.

The pressure test platform also comprises a transport vehicle Y, when in transport, the plurality of groups of supporting legs 2 are folded and erected on a carriage bottom plate of the transport vehicle Y from the bottom of the platform body 1; when experimental, when this platform body 1 was propped flat to multiunit landing leg 2, set up on the carriage bottom plate in platform body 1 bottom, perhaps platform body 1 breaks away from the carriage bottom plate, and it is shown in combination figure 6 that the carriage of transport vechicle Y can freely pass in and out platform body 1 below region this moment.

In a similar way, after the experiment is completed under the state of fig. 6, the transport vehicle Y backs a car to the tail from the head of the platform body 1, the electric power control unit 3 is arranged close to the vehicle head, then the reactor 4 is laid down on the supporting seat 9 and the overturning connecting seat 6, and the locking part 92 is adopted to be locked relatively, then the platform body 1 is lowered onto the carriage bottom plate, the supporting legs 2 are drawn in, the carriage door is closed, and the displacement of the test platform can be realized.

In addition, the ultrahigh voltage alternating current withstand voltage test platform further comprises accessory boxes x arranged on two opposite sides of the supporting seat 9. The platform is fully and reasonably arranged, the area of the platform body 1 is utilized as much as possible, the utilization rate of the platform body 1 is the largest, and the miniaturization of the platform body 1 is facilitated.

The present invention has been described in detail, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the same, and the protection scope of the present invention should not be limited thereby, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims (10)

1. The utility model provides an automatic folding and unfolding formula superhigh pressure exchanges withstand voltage test platform, its is in including can erectting platform body on the carriage bottom plate of transport vechicle, setting landing leg, the setting that can expand or draw in the platform body side are in the electric power control unit of platform body head, the reactor of installing the seat and drive the drive unit that the reactor expanded or drawn in, its characterized in that:

the platform body is provided with an overturning connecting seat, the overturning connecting seat is provided with a notch for avoiding the motion of the seat, the notch extends to the tail part of the platform body to form a supporting part, the seat is connected to the overturning connecting seat through a pivot extending along the width direction of the platform body, the test platform further comprises a cushion block arranged at the tail part of the platform body, an elastic buffer element arranged on the platform body and capable of being supported at the bottom of the seat in a buffering way, and a supporting seat arranged between the head part and the tail part of the platform body, wherein a contact formed by the elastic buffer element and the seat is positioned above a contact formed by the cushion block and the seat,

when the reactor is unfolded, the base is horizontally erected on the supporting part, the cushion block and the elastic buffer piece of the overturning connecting base; when the reactor is furled, the reactor is horizontally arranged on the supporting seat and the overturning connecting seat.

2. The automatic folding ultrahigh voltage alternating current withstand voltage test platform according to claim 1, characterized in that: the support seat comprises a seat body, an arc-shaped support part and a locking part, wherein the arc-shaped support part is formed on the seat body, the opening of the arc-shaped support part is upward, the locking part is detachably arranged on the seat body or the arc-shaped support part, and the locking part can be used for buckling and pressing the reactor which is horizontally arranged on the arc-shaped support part.

3. The automatic folding ultrahigh voltage alternating current withstand voltage test platform according to claim 2, characterized in that: the distance from the bottom of the arc-shaped supporting part to the platform body is greater than the distance from the pivot to the platform body.

4. The automatic folding ultrahigh voltage alternating current withstand voltage test platform according to claim 1, characterized in that: the elastic buffer piece comprises a buffer seat, a buffer head and a buffer head, wherein the buffer seat is positioned between the cushion block and the overturning connecting seat and is fixedly arranged on the platform body, and the buffer head can be arranged on the buffer seat in a vertically buffering motion mode, when the reactor is close to an unfolding state, the buffer head is firstly contacted with the overturning connecting seat to form buffer type overturning until the buffer head is erected on the cushion block.

5. The automatic folding type ultrahigh voltage alternating current withstand voltage test platform according to claim 4, characterized in that: elastic buffer spare have two sets ofly, and correspond the setting and be in the relative both sides of platform body, touching spare with elastic buffer spare one-to-one and setting are in the bottom of the relative both sides of upset connecting seat, wherein the upper portion of buffer head is formed with opening cooperation groove up, touching spare has and can insert cooperation groove is with its accordant connection's touch pole.

6. The automatic folding ultrahigh voltage alternating current withstand voltage test platform according to claim 1, characterized in that: the supporting part of the gap is obliquely arranged in the overturning connecting seat from top to bottom, the driving unit comprises telescopic cylinders which are positioned on two opposite sides of the platform body in the width direction and two end parts of the telescopic cylinders are respectively and rotatably connected to the platform body and the base, the telescopic cylinders are arranged in parallel and synchronously in a telescopic mode, and the two telescopic cylinders are symmetrically arranged on two opposite sides of the base relative to the middle of the reactor.

7. The automatic folding ultrahigh voltage alternating current withstand voltage test platform according to claim 1, characterized in that: the reactor comprises a reactor body arranged on the base and an insulating pull rod used for connecting the end part of the reactor body far away from the base and the opposite side of the pivot to form a closed triangle, wherein the length of the insulating pull rod is adjustable, and the insulating pull rod can be detachably arranged on the base and the reactor body.

8. The automatic folding ultrahigh voltage alternating current withstand voltage test platform according to claim 1, characterized in that: the at least two overturning connecting seats are arranged on the two opposite sides of the platform body in an aligning manner along the width direction of the platform body; the cushion block comprises a cushion body fixed at the tail part of the platform body and a cushion skin arranged on the cushion body.

9. The automatic folding ultrahigh voltage alternating current withstand voltage test platform according to claim 1, characterized in that: the electric power control unit comprises an operation cabin, an electric wire coil, an exciting transformer and a variable frequency power supply, wherein the electric wire coil, the exciting transformer and the variable frequency power supply are arranged in the operation cabin, cabin doors capable of being opened and closed are formed on two sides of the platform body in the width direction, high-voltage wires are arranged inside the platform body or at the bottom of the platform body and communicated with a reactor, and the ultrahigh voltage alternating current withstand voltage test platform further comprises accessory boxes arranged on two opposite sides of a supporting seat.

10. The automatic folding ultrahigh voltage alternating current withstand voltage test platform according to claim 1, characterized in that: the pressure test platform comprises a platform body, a plurality of groups of supporting legs and a transport vehicle, wherein one group of supporting legs is positioned at the head part of the platform body, one group of supporting legs is positioned at the tail part of the platform body, the rest groups are distributed between the head part and the tail part of the platform body at intervals, two supporting legs are arranged in each group and symmetrically arranged at two opposite sides of the platform body, each supporting leg comprises a first arm rod which is horizontally stretched and telescopically, a second arm rod which is positioned at the outer end part of the first arm rod and can lift up and down, and when the pressure test platform is transported, the plurality of groups of supporting legs are folded and erected on a carriage bottom plate of the transport vehicle from the bottom of the platform body; when the platform body is used for testing, multiple groups of supporting legs are used for supporting the platform body, the bottom of the platform body is erected on the platform floor, or the platform body is separated from the platform floor, and a carriage of the transport vehicle can freely enter and exit the area below the platform body.

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