Fracture test device

Abstract

The utility model discloses a fracture test device which comprises a plurality of fracture test units, and each fracture test unit comprises a support which is used for being connected with the bottom of a pole to fix the pole and is provided with an opening; the handle comprises a connecting rod and a plurality of connecting units, the connecting units are connected to the connecting rod, the connecting rod assembly penetrates through the opening to be connected with the connecting units, and the connecting units are arranged to be movable. And the connecting rods sequentially drive the plurality of connecting units through movement, and the plurality of connecting rods enable the plurality of insulating pull rods to respectively move towards directions far away from the plurality of poles so as to disconnect the arc extinguish chambers of the plurality of poles. According to the invention, the operation handle can be operated to simultaneously disconnect the arc extinguish chambers of a plurality of pole columns at one time, and the operation efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fracture test, in particular to a fracture test device. BACKGROUND

[0002] The circuit breaker plays a crucial role in the power system, and its main function is to detect and cut off abnormal currents such as overload and short circuit, to ensure the safe and stable operation of the power system. The core structure of the circuit breaker includes the pole column, which is the key component that carries current and performs opening operation. The pole column usually contains conductive parts, insulating parts, and arc extinguishing devices, etc.

[0003] In the power-off operation, the pole column is responsible for physically disconnecting the circuit and effectively controlling the generation and extinction of the arc during this process. Since the arc can cause great damage to the insulation performance and mechanical structure of the equipment, the pole column must have excellent arc extinction capability and reliable insulation recovery performance.

[0004] To verify the performance of the circuit breaker pole column, a pole column fracture test is usually required. This test mainly tests whether the pole column can quickly and effectively extinguish the arc during the opening process and recover to a safe insulation state. These test results will directly affect the reliability and service life of the circuit breaker, so the fracture test of the pole column is a key step to ensure the quality and safety of the circuit breaker. CONTENT OF THE INVENTION

[0005] To solve the above technical problems, the present application provides a fracture test device.

[0006] The present application is realized by the following technical solutions.

[0007] The present application provides a fracture test device, comprising: a plurality of fracture test units, the fracture test unit comprising: a bracket for connecting with the bottom of the pole column to fix the pole column; a first connecting rod for connecting to the insulating pull rod of the pole column to drive the insulating pull rod to move; and a second connecting rod connected with the first connecting rod; and a handle, the handle comprising a connecting rod and a plurality of connecting units, the plurality of connecting units are arranged on the same side of the connecting rod, and one end of each connecting unit is connected with the connecting rod, and the other end of each connecting unit is connected with each connecting assembly passing through the opening, the connecting unit is arranged to be movable; wherein the connecting rod drives the plurality of connecting units, the plurality of second connecting rods and the plurality of first connecting rods in sequence by moving, so that the plurality of insulating pull rods respectively move away from the plurality of pole columns to disconnect the arc extinguishing chambers of the plurality of pole columns.

[0008] In some example embodiments provided in the present application, the fracture test device comprises a support frame, the support frame comprises a support plate and a plurality of support columns, the support plate comprises a first surface and a second surface arranged oppositely; the support columns are arranged on the first surface to support the support plate; the second surface is used to place the pole column, wherein the support plate comprises a plurality of support through holes, and a plurality of supports are respectively detachably fixed with the bottom of the plurality of pole columns through the plurality of support through holes.

[0009] In some example embodiments provided in the present application, a support table is arranged on the periphery of the support through hole, the support table is located on the second surface, and the support table is used to place the pole column; the support table has a support step surface which is recessed along the direction from the second surface to the first surface, the diameter of the periphery of the support step surface is greater than or equal to the diameter of the pole column, and the diameter of the periphery of the support step surface is less than the diameter of the pole column.

[0010] In some example embodiments provided in the present application, the connecting unit comprises a connecting part connected with the second connecting rod, and a rotating part, the rotating part comprises a first part and a second part extending from both sides of the first part to the connecting part, and the second part is connected with the connecting part, wherein the extension direction of the second part is different from the extension direction of the connecting part, and the second connecting rod is driven to move upward by rotating the rotating part upward in the direction of gravity.

[0011] In some example embodiments provided in the present application, when the handle is rotated to disconnect the arc-extinguishing chamber of the pole column, the first part is located above the first connecting rod.

[0012] In some example embodiments provided in the present application, an opening is arranged on the support, and the first connecting rod is arranged through the opening.

[0013] In some example embodiments provided in the present application, the support comprises a bending part, the bending part comprises a top part located above the pole column in the direction of gravity and a side part connected with the top part, and the opening is located on the side part.

[0014] In some example embodiments provided in the present application, the second connecting rod is located on one side of the side part, and the second connecting rod is arranged between the side part of the support and the connecting unit.

[0015] In some example embodiments provided in the present application, the fracture test device comprises a fixing part, when the handle is rotated to disconnect the arc-extinguishing chamber of the pole column, the fixing part is used to fix the insulating pull rod to keep the arc-extinguishing chamber of the pole column in a disconnected state.

[0016] In some example embodiments provided in the present application, the support is provided with a first through hole, the connecting unit is provided with a second through hole, when the handle is rotated to disconnect the arc extinguishing chamber of the pole, the first through hole and the second through hole are aligned, and the fixing member passes through the first through hole and the second through hole to fix the handle.

[0017] In some example embodiments provided in the present application, the connecting unit and the second connecting rod are detachably connected through bolt connection, stud connection or screw connection.

[0018] In some example embodiments provided in the present application, the support is formed by detachable connection of a first support and a second support, the first support and the second support overlap at the top of the support; and / or the connecting unit is formed by detachable connection of a first connecting unit and a second connecting unit, the first connecting unit and the second connecting unit overlap at the top of the connecting unit.

[0019] Through the present application, the handle can realize movement of multiple connecting units when moving and can sequentially drive multiple second connecting rods and multiple first connecting rods to move multiple insulation pull rods respectively towards the direction away from the multiple poles to disconnect the arc extinguishing chamber of the multiple poles, so that the operation handle can be operated once to simultaneously disconnect the arc extinguishing chamber of the multiple poles, greatly improving the operation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0020] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The accompanying drawings are included to provide a description of the preferred embodiments, and are not intended to limit the scope of the present application. Moreover, like reference numerals designate like parts throughout the several views in the drawings. In the drawings:

[0021] Figure 1 Structure schematic diagram of a fracture test device provided for some embodiments of the present application;

[0022] Figure 2 Partial structure schematic diagram of a fracture test device provided for some embodiments of the present application;

[0023] Figure 3 Partial structure schematic diagram of a fracture test device provided for some embodiments of the present application;

[0024] Figure 4 Bottom view structure schematic diagram of a fracture test device provided for some embodiments of the present application;

[0025] Figure 5 Top view structure schematic diagram of a fracture test device provided for some embodiments of the present application;

[0026] Figure 6 A perspective structural schematic diagram of a fracture test device provided for some embodiments of the present application is shown in FIG. 1.

[0027] Figure 7 A structural schematic diagram of a fracture test unit in a disconnected arc-extinguishing chamber state provided for some embodiments of the present application is shown in FIG. 2.

[0028] Legend of reference signs:

[0029] 1 fracture test device; 10 support; 11 first support; 12 second support; 100 fracture test unit; 101 opening; 102 bending part; 103 first through hole; 121 top; 122 side; 20 first connecting rod; 30 second connecting rod; 40 handle; 400 connecting unit; 401 second through hole; 41 connecting part; 42 rotating part; 43 connecting rod; 402 first connecting unit; 403 second connecting unit; 421 first part; 422 second part; 423 first end; 424 second end; 425 first rotating connection point; 426 second rotating connection point; 50 pole column; 70 support frame; 700 support plate; 71 first face; 72 second face; 73 support through hole; 74 support column; 75 support table; 750 support table step face; 751 inner periphery; 752 outer periphery; x first direction. DETAILED DESCRIPTION

[0030] The embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, but cannot limit the protection scope of the present application.

[0031] The circuit breaker plays a crucial role in the power system, and its main function is to detect and cut off abnormal currents such as overloads and short circuits, ensuring the safe and stable operation of the power system. The core structure of the circuit breaker includes the pole column, which is the key component that carries current and performs opening operations. The pole column usually contains conductive parts, insulating parts, and arc-extinguishing devices, etc.

[0032] In the power-off operation, the pole column is responsible for physically disconnecting the circuit and effectively controlling the generation and extinction of the arc during this process. Since the arc can cause great damage to the insulation performance and mechanical structure of the equipment, the pole column must have excellent arc extinction capability and reliable insulation recovery performance.

[0033] To verify the performance of the circuit breaker pole column, a pole column fracture test is usually required. This test mainly tests whether the pole column can quickly and effectively extinguish the arc during the opening process and recover to a safe insulation state. These test results will directly affect the reliability and service life of the circuit breaker, so the fracture test of the pole column is a key step to ensure the quality and safety of the circuit breaker.

[0034] To solve the above technical problems, the application provides a fracture test device.

[0035] The fracture test device provided by the application comprises a plurality of fracture test units, each of which comprises a support connected with the bottom of a pole to fix the pole, an opening being formed in the support; a connecting rod assembly connected with an insulating pull rod of the pole to drive the insulating pull rod to move; and a handle comprising a connecting rod and a plurality of connecting units, the plurality of connecting units being arranged on the same side of the connecting rod, one end of each of the connecting units being connected with the connecting rod, and the other end of each of the connecting units being connected with each of the connecting assemblies passing through the opening, the connecting units being arranged to be movable; wherein the connecting rod drives the plurality of connecting units and the plurality of connecting rod assemblies to move in sequence so that the plurality of insulating pull rods move in directions away from the plurality of poles to disconnect the arc extinguishing chambers of the plurality of poles.

[0036] According to the application, the handle can drive the plurality of connecting units to move and sequentially drive the plurality of connecting rod assemblies to move so that the plurality of insulating pull rods move in directions away from the plurality of poles to disconnect the arc extinguishing chambers of the plurality of poles, thereby achieving the operation of the handle once and the simultaneous disconnection of the arc extinguishing chambers of the plurality of poles, and greatly improving the operation efficiency.

[0037] According to the application, the connecting rod assembly is used to connect the insulating pull rod of the pole, and the handle can be moved to drive the connecting rod assembly to move, and finally the insulating pull rod is moved to disconnect the arc extinguishing chamber of the pole. The application can achieve the purpose of disconnecting the arc extinguishing chamber of the pole through the linkage between the connecting rod assembly and the handle. According to the application, the operator only needs to operate the handle to disconnect the arc extinguishing chamber, which is convenient to operate.

[0038] Figure 1 A structural schematic diagram of the fracture test device provided by some embodiments of the application is shown in the figure; Figure 2 A partial structural schematic diagram of the fracture test device provided by some embodiments of the application is shown in the figure; Figure 3 A partial structural schematic diagram of the fracture test device provided by some embodiments of the application is shown in the figure; Figure 4 A bottom view structural schematic diagram of the fracture test device provided by some embodiments of the application is shown in the figure; Figure 5 A top view structural schematic diagram of the fracture test device provided by some embodiments of the application is shown in the figure; Figure 6 A structural schematic diagram of the fracture test device provided by some embodiments of the application is shown in the figure.

[0039] As Figures 1 to 5As shown, the fracture testing device 1 of the present application includes a plurality of fracture testing units 100 and a handle 40. The fracture testing unit 100 can include a bracket 10, a connecting rod assembly. The bracket 10 is used to connect with the bottom of the pole 50 to fix the pole 50. The connecting rod assembly can include a first connecting rod 20 and a second connecting rod 30. The first connecting rod 20 is used to connect the insulating pull rod of the pole 50, and the second connecting rod 30 is fixedly connected or rotatably connected with the first connecting rod 20.

[0040] In some exemplary embodiments provided by the present application, the handle 40 can include a connecting rod 43 and a plurality of connecting units 400, the plurality of connecting units 400 are arranged on the same side of the connecting rod 43, and one end of each connecting unit 400 is connected with the connecting rod 43, and the other end of each connecting unit 400 is connected with each connecting assembly passing through the opening 101.

[0041] In some exemplary embodiments provided by the present application, the connecting unit 400 can be connected with the second connecting rod 30, and the handle 40 is arranged to be movable, for example, the connecting rod 43 is movable. Through the movement of the connecting rod 43, the plurality of connecting units 400, the plurality of second connecting rods 30 and the plurality of first connecting rods 20 are sequentially driven to move, so that the plurality of insulating pull rods are respectively moved towards the direction away from the pole 50 to disconnect the arc-extinguishing chambers of the plurality of poles 50.

[0042] In some exemplary embodiments provided by the present application, the connecting unit 400 can be arranged to be rotatable, for example, Figure 2 As shown, the connecting unit 400 can be rotated in the first direction x.

[0043] As shown in Figure 2 and Figure 3 The connecting unit 400 can include a connecting portion 41 and a rotating portion 42, the connecting portion 41 and the rotating portion 42 are connected, and the connecting portion 41 and the second connecting rod 30 are connected. The rotating portion 42 includes a first portion 421 and a second portion 422, the second portion 422 extends from both sides of the first portion 421 to the connecting portion 41, and the second portion 422 and the connecting portion 41 are connected.

[0044] As shown in Figure 2 and Figure 3As shown, the extending direction of the second part 422 is different from the extending direction of the connecting part 41, and through such arrangement, a bending point is formed between the second part 422 and the connecting part 41. Due to the existence of the bending point, the second part 422 and the connecting part 41 are misaligned, which is beneficial to realize the rotation of the handle 40 along the first direction x. For example, a straight handle without a bending point can only be lifted upward to realize the disconnection of the arc-extinguishing chamber. However, in the present application, due to the different extending directions of the second part 422 and the connecting part 41, a good force arm is provided, and the arc-extinguishing chamber can be disconnected by rotating the handle 40. Compared with lifting upward, the rotation needs less force and is convenient for the operator to operate. Moreover, the operation is more stable during the rotation of the handle 40.

[0045] Figure 7 The structure of the fracture test device in the disconnected arc-extinguishing chamber state provided for some embodiments of the present application is intended to be combined with reference to Figure 3 and Figure 7 When the handle 40 is rotated to the disconnected pole arc-extinguishing chamber, the first part 421 is located above the first connecting rod 20. In some embodiments, the first part 421 can be located directly above the first connecting rod 20 in the direction of gravity, but the present application is not limited thereto, and in some embodiments, the first part 421 can be located obliquely above the first connecting rod 20 in the direction of gravity.

[0046] As shown in Figure 2 and Figure 3 The second part 422 extends from both sides of the first part 421 to the connecting part 41, and the first part 421 and the second parts 422 on both sides form a “U” shaped structure. The “U” shape is inverted and connected to the second connecting rod 30, and the space in the middle of the “U” shape can be used to accommodate the first connecting rod 20, the second connecting rod 30 and other structures. Such arrangement makes the first part 421 can be used as the holding part or the force applying part of the operator.

[0047] In some embodiments, the connecting unit 400 can be formed by detachably connecting the first connecting unit 402 and the second connecting unit 403, and the first connecting unit 402 and the second connecting unit 403 overlap at the top of the connecting unit 400. The overlapping position of the first connecting unit 402 and the second connecting unit 403 can correspond to the first part 421. Such overlapping arrangement makes the first part 421 have high thickness and high strength. In the operation process, the first part 421 is usually the position where the operator applies force or holds, and the high thickness and high strength of the first part 421 are beneficial to force and improve the stability of the entire device.

[0048] In some embodiments, the first connecting unit 402 and the second connecting unit 403 can be detachably connected by bolt connection, stud connection or screw connection at a position where the two overlap. Through the detachable arrangement, on the one hand, the handle 40 can be convenient for assembly, manufacturing, and also convenient for disassembly; on the other hand, such a handle 40 can also be suitable for different models of pole. For example, in some embodiments, the first connecting unit 402 and the second connecting unit 403 can overlap by A, and in other embodiments, the first connecting unit 402 and the second connecting unit 403 can overlap by B, wherein the sizes of A and B can be different to be suitable for different poles.

[0049] In some example embodiments provided in the present application, as shown in Figures 1 to 4 The bracket 10 is provided with an opening 101, and the first connecting rod 20 can be arranged through the opening 101. The opening 101 combines the bracket 10 and the first connecting rod 20 together, on the one hand, which is conducive to realizing the linkage between the various components in the fracture test device 1, for example, the first connecting rod 20 can be fixedly connected with the second connecting rod 30 through the opening; on the other hand, the first connecting rod 20 can be limited through the opening 101 of the bracket 10.

[0050] In some example embodiments provided in the present application, as shown in Figure 1 and Figure 2 The handle 40 is rotationally connected with the second connecting rod 30. The handle 40 has a connecting portion 41 and a rotating portion 42 connected with each other, and a first end 423 close to the rotating portion 42 of the connecting portion 41 is rotationally connected with the second connecting rod 30. Here, the first end 423 close to the rotating portion 42 refers to the vicinity of the connection between the connecting portion 41 and the rotating portion 42. The handle 40 is rotationally connected with the second connecting rod 30 through the first end 423, which is conducive to driving the second connecting rod 30 to rotate when the handle 40 rotates. The handle 40 rotates around a first rotation connection point 425 between the handle 40 and the second connecting rod 30.

[0051] As shown in Figure 1 and Figure 2 The second end 424 of the connecting portion 41 away from the rotating portion 42 is connected with the bracket 10, and the bracket 10 can be rotationally connected with the handle 40 at a second rotation connection point 426. In the extension direction of the second connecting rod 30, the length of the second connecting rod 30 is shorter than the length of the bracket 10. Specifically, the length of the second connecting rod 30 is shorter than the length of the side portion 122 of the bracket 10. Such an arrangement can realize that when the handle 40 rotates upward (above the bracket 10) around the rotation connection point, the second connecting rod 30 is driven to move upward under the limiting action of the opening 101, and in turn the first connecting rod 20 is driven to move upward.

[0052] In some example embodiments provided in the present application, as shown inFigures 2 to 4 As shown, the bracket 10 can include a bending part 102, which can include a top part 121 above the pole 50 in the direction of gravity and side parts 122 connected to both sides of the top part 121, and the opening 101 can be located at the side part 122.

[0053] In some example embodiments provided in the present application, as shown, Figure 2 As shown, the bracket 10 can be formed by detachable connection of a first bracket 11 and a second bracket 12, and the first bracket 11 and the second bracket 12 overlap at the top of the bracket 10. Such overlapping arrangement makes the overlapping part thick and strong, which is beneficial to improve the stability of the entire device.

[0054] In some embodiments, the first bracket 11 and the second bracket 12 can be detachably connected by bolt connection, stud connection or screw connection at the position where they overlap. Through the detachable arrangement, on the one hand, the bracket 10 can be convenient for assembly, manufacturing and disassembly; on the other hand, such bracket 10 can also be suitable for different models of poles. For example, in some embodiments, the first bracket 11 and the second bracket 12 can overlap by a part, and in other embodiments, the first bracket 11 and the second bracket 12 can overlap by another part, wherein the size of the part and the another part can be different to achieve suitability for different poles.

[0055] In some example embodiments provided in the present application, as shown, Figure 7 As shown, the fracture test device 1 can include a fixing part, which is used to fix the position of the handle 40 when the handle 40 is rotated to the arc extinguishing chamber of the disconnected pole, so as to keep the arc extinguishing chamber of the pole 50 in a disconnected state.

[0056] In some example embodiments provided in the present application, the bracket 10 is provided with a first through hole 103, and the handle is provided with a second through hole 401. When the handle 40 is rotated to the arc extinguishing chamber of the disconnected pole 50, the first through hole 103 and the second through hole 401 can be aligned, and the fixing part passes through the first through hole 103 and the second through hole 401 to fix the handle 40.

[0057] Through the arrangement of the fixing part, the existing position of the handle 40 can be kept when the arc extinguishing chamber is disconnected, and the sudden reclosing of the handle 40 caused by unstable factors can be avoided. The arrangement of the fixing part is beneficial to the stability of the fracture test device 1 during the fracture test process.

[0058] In some example embodiments provided in the present application, as shown, Figures 4 to 6As shown, the fracture testing device 1 can include a support frame 70, a support plate 700, the support plate 700 can include a first face 71 and a second face 72 oppositely arranged. In use, the handle 40 can be located on the first face 71, and the second face 72 can be used to place the pole 50. The support plate 700 can include a plurality of support through holes 73, and the plurality of supports 10 can pass through the plurality of support through holes 73 to be detachably fixed with the bottom of the plurality of poles 50, respectively.

[0059] It should be noted that, Figure 5 As shown is a perspective view of the fracture testing device, and the so-called perspective view refers to the view from above to below in the direction of gravity in use, which can be the view along the direction from the second face to the first face. Figure 6 As shown is a perspective view of the fracture testing device, and the angle shown is the view along the direction from the first face to the second face.

[0060] As Figures 4 to 6 shown, the support through hole 73 can be provided with a support platform 75 located on the first face 71, and the support platform 75 can be used to place the pole 50. The support platform 75 can have a support step surface 750 recessed along the direction from the first face 71 to the second face 72. The outer periphery 752 of the support step surface 750 has a diameter greater than or equal to the diameter of the pole 50, and the inner periphery 751 of the support step surface 750 has a diameter less than the diameter of the pole 50. Through such arrangement, the pole 50 can be more stably placed on the support platform 75 to facilitate stable operation of the fracture test.

[0061] As Figures 2 to 4 shown, the support 10 can have a U-shaped form, and the middle of the U-shaped form can be a bending portion 102, and the two sides of the U-shaped form can be used to connect the support plate 700. For example, the two sides of the U-shaped form can be detachably connected by bolt connection, stud connection or screw connection.

[0062] In some example embodiments provided in the present application, as Figure 5 and Figure 6 shown, the second face 72 can be provided with a support column 74. The support column 74 can be used to support the support plate 700.

[0063] In some example embodiments provided in the present application, as Figures 2 to 4 shown, the second connecting rod 30 can be located on one side of the side portion, and the second connecting rod is arranged between the side portion of the support and the handle. The second connecting rod 30 can be long strip-shaped.

[0064] In some example embodiments provided in the present application, the handle 40 and the second connecting rod 30 can be detachably connected through bolt connection, stud connection or screw connection. Through the detachable arrangement, on the one hand, the handle 40 and the second connecting rod 30 can be convenient for assembly, manufacturing, and also convenient for disassembly; on the other hand, such handle 40 and second connecting rod 30 can also be suitable for different types of pole columns. For example, in some embodiments, the handle 40 and the second connecting rod 30 can overlap a part, and in some other embodiments, the handle 40 and the second connecting rod 30 can overlap another part, wherein the size of the part and the another part can be different to achieve the suitability for different pole columns.

[0065] Through the present application, the first connecting rod, the insulating pull rod for connecting the pole column, the handle can be moved to drive the second connecting rod and the first connecting rod to move, and finally realize the movement of the insulating pull rod to disconnect the arc extinguishing chamber of the pole column. The present application can realize the purpose of disconnecting the arc extinguishing chamber of the pole column through the linkage cooperation between the first connecting rod, the second connecting rod and the handle. The arrangement of the present application can realize the disconnection of the arc extinguishing chamber by only operating the handle, which is convenient for operation.

[0066] Through the design of the rotatable handle, the technical personnel can pull open the arc extinguishing chamber in the pole column through simple rotation operation. The U-shaped structure of the rotating handle provides a good force arm, so that the operation is labor-saving and efficient. The structural design of the fracture test device is relatively simple, mainly composed of several key components, which is convenient for manufacturing and assembling. At the same time, the connection mode between the components is simple and easy to operate, which is beneficial to the technical personnel to quickly install and disassemble on site, and improves the work efficiency.

[0067] The fracture test device of the present application can simultaneously pull the insulating pull rods of multiple pole columns, thereby realizing the simultaneous mechanical pulling open of the fractures of multiple pole columns. This design enables the operator to complete the fracture test of multiple pole columns at one time, greatly improving the operation efficiency.

[0068] The present application can also realize automatic alignment and fixation. By pulling three pole columns at the same time through a handle, an automatic alignment and fixation mechanism can be realized, which ensures that multiple pole columns can be accurately synchronized during operation, avoiding test result errors caused by asynchronous pulling.

[0069] The present application can also realize adjustable design. Each component in the fracture test device adopts an adjustable structural design, which is suitable for different types and specifications of circuit breaker pole columns, and has strong universality.

[0070] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application; the use of the terms "including," "comprising," or "having" and variations thereof herein is intended to be broad and encompass the terms "consisting of" and "consisting essentially of" and variations thereof. Unless otherwise noted, the terms "including" and "comprising" are open-ended and do not exclude the presence of unrecited elements or limitations.

[0071] In the description of the embodiments of the present application, the technical terms "first", "second", "third" and the like are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0072] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive or alternative embodiments. It is explicitly and implicitly understood that the embodiments described herein can be combined with other embodiments.

[0073] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after it.

[0074] In the description of the embodiments of the present application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "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 the purpose of facilitating the description of the embodiments of the present application and simplifying the description, and are not intended to indicate or imply that the indicated device or element must have a particular orientation, be constructed in a particular orientation, be operated or used, and therefore cannot be understood as limiting the embodiments of the present application.

[0075] In the description of the embodiments of the present application, unless specifically defined and limited otherwise, the terms "mounting", "connected", "connection", "fixed", and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be direct connection, can also be indirect connection through intervening medium, can be internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0076] In the description of the embodiments of the present application, unless specifically defined and limited otherwise, the technical term "contact" should be understood broadly, which can be direct contact, or contact through an intervening medium layer, can be contact between two things in contact without substantially mutual force of interaction, or contact between two things in contact with mutual force of interaction.

[0077] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit the same; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and the description of the present application. Especially, as long as there is no structural conflict, each technical feature mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A fracture testing apparatus, characterized by, Comprise: A plurality of fracture test units, the fracture test unit comprising: A bracket for connecting with the bottom of the pole to fix the pole, the bracket is provided with an opening; A connecting rod assembly connected with the insulating pull rod of the pole to drive the insulating pull rod to move; and A handle, the handle comprising a connecting rod and a plurality of connecting units, the plurality of connecting units are arranged on the same side of the connecting rod, and one end of each of the connecting units is connected with the connecting rod, the other end of each of the connecting units is connected with each of the connecting assemblies passing through the opening, The connecting unit is arranged to be movable; Wherein, the connecting rod is moved to sequentially drive a plurality of the connecting units, a plurality of the connecting rod assemblies so that a plurality of the insulating pull rods are respectively moved away from the plurality of the poles to disconnect the arc-extinguishing chambers of the plurality of the poles.

2. The fracture test device according to claim 1, wherein The fracture test device comprises a support frame, the support frame comprises a support plate and a plurality of support columns, the support plate comprises a first face and a second face arranged oppositely; The support column is arranged on the first face for supporting the support plate; The second face is used for placing the pole, Wherein, the support plate comprises a plurality of support through holes, and a plurality of the brackets are respectively detachably fixed with the bottoms of a plurality of the poles through a plurality of the support through holes.

3. The fracture test device according to claim 2, wherein The support through hole is provided with a support table on the side, the support table is located on the second face, and the support table is used for placing the pole; The support table has a support step surface which is recessed along the direction from the second face to the first face, the diameter of the periphery of the support step surface is greater than or equal to the diameter of the pole, and the diameter of the inner periphery of the support step surface is less than the diameter of the pole.

4. The fracture test device according to claim 1, wherein The connecting rod assembly comprises: A first connecting rod for connecting with the insulating pull rod of the pole to drive the insulating pull rod to move; A second connecting rod connected with the first connecting rod.

5. The fracture test device according to claim 4, wherein The connecting unit comprises: A connecting part connected with the second connecting rod; A rotating part, the rotating part comprises a first part and a second part extending from both sides of the first part to the connecting part, and the second part is connected with the connecting part, Wherein, the extension direction of the second part is different from the extension direction of the connecting part, and the second connecting rod is driven to move upward by rotating the rotating part upward in the direction of gravity.

6. The fracture test device according to claim 5, wherein The first end of the connecting part close to the rotating part is rotationally connected with the second connecting rod, and the second end of the connecting part away from the rotating part is connected with the bracket; In the extension direction of the second connecting rod, the length of the second connecting rod is shorter than the length of the bracket.

7. The fracture test device according to claim 4, wherein The first connecting rod is arranged through the opening.

8. The fracture test device according to claim 7, wherein The bracket includes a bent portion including a top portion located above the pole in a direction of gravity and a side portion connected to the top portion, and the opening is located in the side portion.

9. The fracture test device according to claim 8, wherein The second link is located on one side of the side portion, and the second link is provided between the side portion of the bracket and the connection unit.

10. The fracture test device according to claim 1, wherein The fracture test device includes a fixing member for fixing the insulating pull rod when the handle is rotated to open the arc extinguishing chamber of the pole, so as to keep the arc extinguishing chamber of the pole in an open state.

11. The fracture test device according to claim 10, wherein The bracket is provided with a first through hole, and the connection unit is provided with a second through hole, When the handle is rotated to open the arc extinguishing chamber of the pole, the first through hole and the second through hole are aligned, and the fixing member passes through the first through hole and the second through hole to fix the handle.

12. The fracture test device according to claim 4, wherein The connection unit and the second link are detachably connected by bolt connection, stud connection or screw connection.

13. The fracture test device according to claim 8, wherein The bracket is formed by detachable connection of a first bracket and a second bracket, and the first bracket and the second bracket overlap at the top portion of the bracket; and / or The connection unit is formed by detachable connection of a first connection unit and a second connection unit, and the first connection unit and the second connection unit overlap at the top portion of the connection unit.

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