A highly integrated environmentally friendly solid-sealed pole assembly for environmentally friendly gas cabinets

Abstract

The present invention discloses a highly integrated environmentally friendly solid-sealed pole assembly for an environmentally friendly gas cabinet, comprising an insulating shell, a vacuum arc extinguishing chamber, a moving contact, a push-pull assembly, a crank arm, an outlet assembly and a pull rod assembly, wherein the insulating shell comprises a tube body portion for accommodating the vacuum arc extinguishing chamber and a seat body portion for accommodating the crank arm, the vacuum arc extinguishing chamber is arranged in the tube body portion, an assembly port corresponding to the outlet assembly and the pull rod assembly is arranged at the lower part of the seat body portion, the outlet assembly and the pull rod assembly are arranged below the seat body portion, an outlet seat is arranged at the end of the tube body portion, the outlet seat is connected to the outlet terminal of the vacuum arc extinguishing chamber, the crank arm is arranged in the seat body portion, the moving contact is connected to the side of the vacuum arc extinguishing chamber close to the seat body portion, and the connecting rod of the moving contact is connected to the outlet assembly through a flexible connection. The solid-sealed pole assembly of the present invention can greatly reduce the volume of the switch body, make the structure of the switch body more compact, reduce the use of the connecting rod mechanism of the driving pull rod assembly, and make the structure more simplified.

Description

Technical Field

[0001] The present invention relates to the field of switchgear, and in particular to a highly integrated environmentally friendly solid-sealed pole assembly for an environmentally friendly gas cabinet. Background Art

[0002] The sealed pole is a commonly used device on the switchgear. The sealed pole usually encapsulates the vacuum interrupter, moving contact, static contact, upper outlet seat, lower outlet seat and other components. The existing sealed pole is usually made of epoxy resin injection molding. The molecular structure of epoxy resin material is stable, and it has high chemical corrosion resistance and heat resistance. Therefore, epoxy resin material is difficult to degrade in the natural environment.

[0003] The structure of the existing sealed pole is usually a cylindrical barrel structure, which can be installed vertically or horizontally during installation. The vertically installed sealed pole has an upper outlet seat connected to the top of the sealed pole, a lower outlet seat is arranged on the side wall of the middle or lower part of the sealed pole, and an insulating pull rod is connected to the lower end of the sealed pole. When installing, the sealed pole of this structure is usually fixedly connected to the mounting frame through the middle mounting seat. The sealed poles disclosed in the patents with publication numbers CN104241010A, CN104576172B and CN102891035A all adopt the above-mentioned structure. The disadvantage of this solution is that the vacuum arc extinguishing chamber, static contact, moving contact and insulating pull rod in the sealed pole are all arranged along the axial direction of the sealed pole, resulting in a relatively long overall length of the sealed pole. In addition, when the sealed pole is installed, it is necessary to reserve the expansion and contraction space of the insulating pull rod. Therefore, when the sealed pole is installed in the switch cabinet, the space occupied is relatively large, which greatly affects the overall volume of the switch cabinet, and thus it needs to be improved. Summary of the invention

[0004] The object of the present invention is to provide a highly integrated environmentally friendly solid-sealed pole assembly for an environmentally friendly gas cabinet that can solve the problem that the existing solid-sealed poles described in the background technology occupy a large space during installation.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a highly integrated environmentally friendly sealed pole assembly for an environmentally friendly gas cabinet, comprising an insulating shell, a vacuum arc chamber, a moving contact, a push-pull assembly, a crank arm, a lead-out assembly and a pull rod assembly, the insulating shell comprising a tube body portion for accommodating the vacuum arc chamber and a seat body portion for accommodating the crank arm, the vacuum arc chamber is arranged in the tube body portion, and an assembly port corresponding to the lead-out assembly and the pull rod assembly is provided at the lower part of the seat body portion, the lead-out assembly and the pull rod assembly are respectively arranged below the seat body portion, and a lead-out seat is provided at the end of the tube body portion, the lead-out seat is connected to the lead-out terminal of the vacuum arc chamber, the crank arm is arranged in the seat body portion, the moving contact is connected to a side of the vacuum arc chamber close to the seat body portion, the connecting rod of the moving contact is connected to the lead-out assembly through a soft connection, the lead-out assembly is movably connected to the lower part of one side of the crank arm, the upper part of this side of the crank arm is movably connected to one end of the push-pull assembly, the other end of the push-pull assembly is fixedly connected to the connecting rod of the moving contact, and the other side of the crank arm is movably connected to the pull rod assembly.

[0006] In the above scheme, the crank arm includes a front side plate and a rear side plate, a first hinge axis and a second hinge axis are provided between the front side plate and the rear side plate, the outlet assembly is hinged to the front side plate and the rear side plate through the first hinge axis, the pull rod assembly is hinged to the front side plate and the rear side plate through the second hinge axis, the front side and the rear side of the push-pull assembly are respectively provided with a rotating shaft portion, and the push-pull assembly is hinged to the front side plate and the rear side plate through the rotating shaft portion. Through this arrangement, the pull rod assembly, the outlet assembly and the push-pull assembly are connected through the crank arm to form a connecting rod mechanism, the crank arm can rotate with the first hinge axis as the rotating shaft, the pull rod assembly can drive the crank arm to move up and down, and through the drive of the pull rod assembly, the push-pull assembly can move accordingly, drive the pull rod of the moving contact of the vacuum interrupter to move, and then drive the movement of the moving contact, so as to realize the combination or separation of the moving contact and the static contact of the vacuum interrupter.

[0007] In the above scheme, the push-pull assembly includes a spring, a first spring stopper and a second spring stopper, and a limiting portion is provided at the end of the connecting rod of the moving contact, the first spring stopper, the spring and the second spring stopper are respectively sleeved on the connecting rod, the limiting portion limits the first spring stopper, the second spring stopper is fixedly connected to the connecting rod, the spring is arranged between the first spring stopper and the second spring stopper, the front and rear sides of the first spring stopper are respectively provided with a rotating shaft portion, and the first spring stopper is movably connected to the crank arm through the rotating shaft portion. Through this arrangement, the push-pull assembly can perform a push-pull operation on the moving contact of the vacuum arc chamber. When the crank arm pushes the first spring stopper to move toward the vacuum arc chamber, the first spring stopper applies a thrust to the second spring stopper through the spring, and then the second spring stopper drives the connecting rod to move toward the vacuum arc chamber. When the crank arm pushes the first spring stopper to move in a direction away from the vacuum arc chamber, the first spring stopper acts on the connecting rod through the limiting portion at the end of the connecting rod, driving the connecting rod to move in a direction away from the vacuum arc chamber. Through this action, the displacement operation of the moving contact of the vacuum arc chamber is realized.

[0008] In the above solution, a metal connector is embedded in the upper end of the seat body. By arranging the embedded metal connector in the upper end of the seat body, it is convenient to fix the sealed pole assembly to the bracket of the switch body and enhance the stability of the connection.

[0009] In the above scheme, an end cover is further provided at one end of the seat body away from the vacuum interrupter, a sensor is provided on the end cover, a columnar sensor is provided on the sensor, a sensor connecting rod is provided on the crank arm, a connecting portion is provided at one end of the sensor connecting rod, a through hole is provided at the connecting portion, the columnar sensor passes through the through hole, the sensor connecting rod is connected to the columnar sensor in a sliding manner, and the other end of the sensor connecting rod is movably connected to the crank arm through the rotating shaft portion on the front or rear side of the first spring stopper. Through this arrangement, the sensor can accurately sense the opening and closing state of the vacuum interrupter through the relative position of the connecting portion on the sensor connecting rod and the columnar sensor.

[0010] In the above scheme, the outlet assembly includes a stationary blade head and a connecting support, the upper end of the flexible connection is sleeved on the connecting rod of the moving contact, and the connecting support is provided with a first connecting part, a second connecting part and a third connecting part, the first connecting part extends to the top of the stationary blade head, the first connecting part, the flexible connection and the stationary blade head are fixedly connected by bolts, the second connecting part extends to the side wall of the stationary blade head, the second connecting part is fixedly connected to the stationary blade head by bolts, and the third connecting part is provided with a lug, which is hingedly connected to the crank arm through the first hinge shaft. Through this arrangement, the connecting support and the flexible connection can be stably connected to the stationary blade head respectively,

[0011] In the above scheme, the pull rod assembly includes an insulating pull rod and a sleeve, and the upper and lower ends of the insulating pull rod are respectively provided with connectors, the connector at the upper end is sleeved on the sleeve, and the connector and the sleeve are fixedly connected, and the sleeve is sleeved on the second hinge shaft. Through this arrangement, the connector at the upper end of the insulating pull rod can be flexibly rotated and connected to the second hinge shaft through the sleeve.

[0012] In the above scheme, the lower part of the seat body is provided with an assembly opening corresponding to the outlet assembly and the pull rod assembly respectively, and a corresponding protective sleeve is provided at the assembly opening. By providing the assembly opening and the protective sleeve, the outlet assembly and the pull rod assembly can be isolated to avoid interference of the mechanism, and can also be protected separately.

[0013] In the above solution, the insulating shell is made of nylon. Through this arrangement, the insulating shell of the sealed pole assembly can have good electrical performance, mechanical strength and corrosion resistance, and the insulating shell of nylon material can be naturally degraded, making the application safer and more environmentally friendly.

[0014] The present invention has positive effects: 1) The highly integrated environmentally friendly sealed pole assembly for environmentally friendly gas cabinets of the present invention has an improved design of the structure of the sealed pole. Compared with the existing cylindrical barrel-shaped sealed pole, a seat body, a push-pull assembly and a crank arm are designed. The insulating shell, the pull rod assembly and the outlet assembly of the sealed pole can be arranged at a certain angle. For example, the insulating shell can be arranged horizontally, and the outlet assembly and the pull rod assembly can be arranged nearly vertically. Through this arrangement, the overall length of the sealed pole assembly can be greatly shortened, and the pull rod assembly is more convenient to connect with the drive shaft that operates the pull rod assembly, and the distance between the lower end of the pull rod assembly and the operating shaft can be shortened, which greatly reduces the volume of the switch body and makes the structure of the switch body more compact. , reducing the use of the connecting rod mechanism of the driving pull rod assembly, making the structure more simplified; 2) The highly integrated environmentally friendly sealed pole assembly for the environmentally friendly gas cabinet of the present invention, the pull rod mechanism drives the moving contact of the vacuum arc chamber through the crank arm and the push-pull assembly, which can realize the efficient and flexible movement of the moving contact, and realize the combination and separation of the moving contact and the static contact of the vacuum arc chamber; 3) The sealed pole assembly of the present invention, the crank arm and the push-pull assembly can be made of insulating materials. Through this arrangement, the pull rod assembly and the moving contact of the vacuum arc chamber do not need to be directly connected. Compared with the prior art, in which the insulating pull rod is arranged at the lower end of the sealed pole and is directly connected to the moving contact, the insulation performance between the pull rod assembly and the moving contact can be greatly enhanced, thereby improving the safety of the switchgear. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of the solid-sealed pole assembly of the present invention.

[0016] Figure 2It is a schematic diagram of the bottom view of the structure of the sealed pole assembly of the present invention.

[0017] Figure 3 It is a schematic diagram of the assembly structure of the sealed pole assembly of the present invention applied to a switch body.

[0018] Figure 4 It is a schematic diagram of the front structure of the sealed pole assembly of the present invention (the tube body and the seat body are not shown).

[0019] Figure 5 It is a schematic diagram of the rear structure of the sealed pole assembly of the present invention (the tube body and the seat body are not shown).

[0020] Figure 6 It is a schematic diagram of the rear structure of the sealed pole assembly of the present invention (the tube body, the seat body and the front side plate of the crank arm are not shown).

[0021] Figure 7 It is a schematic diagram of the connection structure between the sealed pole assembly, the operating shaft and the clutch switch of the present invention.

[0022] Figure 8 It is a schematic diagram of the connection structure of the sealed pole assembly, the operating shaft and the clutch switch of the present invention (the tube body and the seat body are not shown).

[0023] Fig. 9 It is a schematic structural diagram of the connection support member of the outlet assembly of the present invention.

[0024] The reference numerals in the figure are: insulating housing 1, tube body 11, seat body 12, end cover 13, outlet seat 14, metal connector 15, assembly port 16, protective sleeve 17, vacuum interrupter 2, moving contact 3, connecting rod 31, limiting portion 32, push-pull assembly 4, spring 41, first spring stopper 42, second spring stopper 43, limiting edge 44, rotating shaft 45, crank arm 5, front side plate 51, rear side plate 52, first hinge shaft 53, The second articulated shaft 54, the outlet assembly 6, the stationary blade head 61, the connecting support 62, the blade head 63, the first connecting part 64, the second connecting part 65, the third connecting part 66, the lug 67, the isolating shaft 68, the isolating blade switch 69, the pull rod assembly 7, the insulating pull rod 71, the sleeve 72, the connecting head 73, the operating shaft 74, the sensor 8, the cylindrical sensor element 81, the sensor connecting rod 82, the connecting part 83, the sensor mounting bracket 84, and the flexible connection 9. DETAILED DESCRIPTION

[0025] The technical scheme of the present invention is clearly and completely described below through embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] like Figure 1-8 A highly integrated environmentally friendly sealed pole assembly for an environmentally friendly gas cabinet is shown, comprising an insulating shell 1, a vacuum arc extinguishing chamber 2, a moving contact 3, a push-pull assembly 4, a crank arm 5, an outlet assembly 6 and a pull rod assembly 7.

[0027] The insulating shell 1 preferably adopts a nylon one-piece injection molded part. Although the existing epoxy resin shell can meet the basic requirements of the sealed pole, it cannot be naturally degraded. The nylon one-piece injection molded part can not only meet the mechanical properties, electrical properties and corrosion resistance of the sealed pole, but also can be naturally degraded, avoiding environmental pollution caused by discarded sealed poles.

[0028] The shape of the insulating shell 1 includes a tube body portion 11 for accommodating the vacuum arc chamber 2 and a seat body portion 12 for accommodating the crank arm. Compared with the existing cylindrical insulating shell, this structure has a smaller overall size. More importantly, the insulating pull rod 71 does not need to be coaxially arranged with the insulating shell 1, so that when the sealed pole is installed on the switch body, there is no need to reserve the length of the insulating pull rod 71 and the length of the telescopic range, which greatly reduces the occupied volume and makes the volume of the switch body more compact.

[0029] The tube body 11 is cylindrical, and its internal cavity matches the volume of the vacuum interrupter 2. A lead-out socket 14 is provided at the end of the tube body 11, and the lead-out socket 14 is connected to the lead-out terminal of the vacuum interrupter 2. The function of the lead-out socket 14 is the same as that of the upper lead-out socket of the existing sealed pole.

[0030] The vacuum interrupter 2 may adopt an existing vacuum interrupter, and the moving contact 3 of the vacuum interrupter 2 is arranged on a side close to the seat body 12 .

[0031] The seat body 12 can be designed into any desired shape, for example, Figure 1 The approximately rectangular shape shown in .

[0032] A metal connector 15 is embedded in the upper end of the seat body 12. By arranging the embedded metal connector 15 in the upper end of the seat body 12, it is convenient to fix the sealed pole assembly to the bracket of the switch body and enhance the stability of the connection.

[0033] The seat body 12 has a cavity inside, and the lower part of the seat body 12 has an assembly opening 16 corresponding to the outlet assembly 6 and the pull rod assembly 7. The outlet assembly 6 and the pull rod assembly 7 are respectively arranged below the seat body 12, and a corresponding protective sleeve 17 is arranged at the assembly opening 16. By providing the assembly opening 16 and the protective sleeve 17, the outlet assembly 6 and the pull rod assembly 7 can be isolated to avoid interference of the mechanism, and the separately arranged protective sleeve 17 can also protect the outlet assembly 6 and the pull rod assembly 7 respectively.

[0034] An end cover 13 is also provided at one end of the seat body 12 away from the vacuum interrupter 2. The end cover 13 and the seat body 12 can be connected by snap fit. In order to ensure the sealing of the rear end of the insulating housing 1, a sealing ring can be provided in the end cover 13. A sensor 8 for detecting the opening and closing state of the vacuum interrupter 2 can be provided on the end cover 13. Usually, on a switch body, a set of sensors 8 can be provided on one of the three sets of sealed poles.

[0035] The push-pull assembly 4 and the crank arm 5 are arranged in the cavity of the seat body 12 .

[0036] The crank arm 5 includes a front side plate 51 and a rear side plate 52, and a first hinge shaft 53 and a second hinge shaft 54 ​​are provided between the front side plate 51 and the rear side plate 52. The first hinge shaft 53 is arranged at a side position of the crank arm 5 close to the end cover 13, and the second hinge shaft 54 ​​is arranged at a lower position of a side of the crank arm 5 away from the end cover 13. The structure and shape of the crank arm 5 can be designed as needed, for example, a shape approximately triangular or trapezoidal or other shapes can be adopted.

[0037] The front side plate 51 and the rear side plate 52 of the crank arm 5 may be a connected integral part, or may be two plates with a certain gap.

[0038] The push-pull assembly 4 includes a spring 41 , a first spring stopper 42 and a second spring stopper 43 .

[0039] The spring 41 may be an existing cylindrical coil spring.

[0040] The first spring stopper 42 and the second spring stopper 43 can be circular pieces made of insulating material, and limiting edges 44 for radially limiting the spring 41 can be set at their edges, and a through hole passing through the connecting rod 31 is set in the middle thereof.

[0041] The connecting rod 31 of the moving contact 3 may be a cylindrical rod, or an extension rod may be arranged at the end of the cylindrical rod, and the extension rod is sleeved and fixedly connected with the cylindrical rod.

[0042] A limiting portion 32 is provided at the end of the connecting rod 31 of the moving contact 3. The limiting portion 32 may be a limiting portion having a diameter greater than the center hole of the first spring stopper 42, and its shape may be cylindrical. The first spring stopper 42, the spring 41, and the second spring stopper 43 are respectively sleeved on the connecting rod 31, and the limiting portion 32 limits the first spring stopper 42.

[0043] The second spring stopper 43 is fixedly connected to the connecting rod 31 . The spring 41 is arranged between the first spring stopper 42 and the second spring stopper 43 . The limiting edges on the first spring stopper 42 and the second spring stopper 43 are arranged toward the spring 41 .

[0044] The first spring stopper 42 is movably connected to the upper part of the side of the crank arm 5 away from the end cover 13, and the movably connected method can be designed as needed. For example, a rotating shaft 45 can be provided on the front and rear sides of the first spring stopper 42, respectively, and the first spring stopper 42 is movably connected to the upper part of the side of the crank arm 5 away from the end cover 13 through the rotating shaft 45. The movably connected to the crank arm 5 can also be achieved by other commonly used movably connected methods.

[0045] Through this arrangement, the push-pull assembly 4 can push and pull the moving contact 3 of the vacuum arc chamber 2. When the crank arm 5 pushes the first spring stopper 42 to move toward the vacuum arc chamber 2, the first spring stopper 42 applies a thrust to the second spring stopper 43 through the spring 41, and then the second spring stopper 43 drives the connecting rod 31 to move toward the vacuum arc chamber 2. When the crank arm 5 pushes the first spring stopper 42 to move away from the vacuum arc chamber 2, the first spring stopper 42 acts on the connecting rod 31 through the limiting portion 32 at the end of the connecting rod 31, driving the connecting rod 31 to move away from the vacuum arc chamber 2. Through this action, the displacement operation of the moving contact 3 of the vacuum arc chamber 2 is realized.

[0046] A sensor 8 is provided on the end cover 13. The sensor 8 can be arranged on the outside of the insulating housing 1, and the sensor 8 can be fixed on the end cover 13 by a sensor mounting bracket 84. A columnar sensor 81 is provided on the sensor 8, and the columnar sensor 81 extends into the insulating housing 1 through the through hole on the end cover 13. A sensor connecting rod is provided on the crank arm, and a connecting portion is provided at one end of the sensor connecting rod, and a through hole is provided at the connecting portion, and the columnar sensor 81 passes through the through hole. The sensor connecting rod 82 is connected to the columnar sensor 81 in a sliding manner, and the other end of the sensor connecting rod 82 is movably connected to the crank arm 5 through the rotating shaft portion 45 on the front side or rear side of the first spring stopper 42. Through this arrangement, through the relative position of the connecting portion 83 on the sensor connecting rod 82 and the columnar sensor 81, the sensor 8 can accurately sense the opening and closing state of the vacuum interrupter 2.

[0047] The outlet assembly 6 includes a stationary blade head 61 and a connecting support 62 .

[0048] The stationary blade head 61 can adopt the stationary blade head shown in the drawings, which is approximately cylindrical in the upper part and provided with a blade head part 63 in the lower part. The blade head part 63 can be used to connect the isolating blade switch.

[0049] The stationary blade head 61 is connected to the connecting rod 31 of the moving contact 3 via a flexible connection 9 .

[0050] like Fig. 9 As shown, the connecting support member 62 is provided with a first connecting portion 64 , a second connecting portion 65 and a third connecting portion 66 .

[0051] The first connection part 64 extends to the top of the stationary cutter head 61. The first connection part 64, the lower part of the flexible connection 9 and the upper surface of the stationary cutter head 61 are respectively provided with assembly holes. The first connection part 64, the flexible connection 9 and the stationary cutter head 61 are fixedly connected by bolts.

[0052] The upper end of the flexible connection 9 is sleeved and fixedly connected to the connecting rod 31 of the moving contact 3 .

[0053] The second connection portion 65 extends to the side wall of the stationary blade head 61 . The second connection portion 65 and the side wall of the stationary blade head 61 are respectively provided with assembly holes. The second connection portion 65 is fixedly connected to the stationary blade head 61 by bolts.

[0054] The third connection portion 66 is provided with a lug 67 , and the lug 67 is hingedly connected to the lower part of the side of the crank arm 5 away from the end cover 13 through the first hinge shaft 53 .

[0055] Through this arrangement, the connecting support 62 and the soft connection 9 can be stably connected to the stationary cutter head 61 respectively, and the connecting support 62 can be hingedly connected to the crank arm 5 through the first hinge shaft 53, so that the crank arm 5 can rotate with the first hinge shaft 53 as the rotation axis.

[0056] The pull rod assembly 7 includes an insulating pull rod 71 and a sleeve 72. The upper and lower ends of the insulating pull rod 71 are respectively provided with connectors 73. The connector 73 at the lower end of the insulating pull rod 71 is used to connect the operating shaft 74. The connector 73 at the upper end is sleeved on the sleeve 72. The connector 73 and the sleeve 72 are fixedly connected. The sleeve 72 is sleeved on the second hinge shaft 54. Through this arrangement, the connector 73 at the upper end of the insulating pull rod 71 can be flexibly rotatably connected to the second hinge shaft 54 ​​through the sleeve 72.

[0057] The highly integrated environmentally friendly solid-sealed pole assembly for environmentally friendly gas cabinets of the present invention can be applied to existing switch bodies. When used, three groups of solid-sealed poles are applied to one switch body, and the connectors at the lower ends of the pull rod assemblies of the three groups of solid-sealed pole assemblies are respectively movably connected to the operating shaft 74 through the operating shaft crank arm, and the operating shaft 74 simultaneously drives the movement of the moving contacts of the three groups of solid-sealed pole assemblies, thereby synchronously realizing the combination or separation operation of the moving contacts and static contacts of the three groups of vacuum arc extinguishing chambers. The outlet seats of the three groups of solid-sealed pole assemblies are respectively connected to the external wires. The static knife heads of the outlet assemblies of the three groups of solid-sealed pole assemblies are respectively arranged corresponding to the isolation knife switches 69 on the isolation shaft 68. When the isolation shaft 68 rotates, the closing or opening operation of the isolation knife switch 69 and the static knife head 61 can be realized simultaneously.

[0058] The highly integrated and environmentally friendly sealed pole assembly for an environmentally friendly gas cabinet of the present invention has an improved design on the structure of the sealed pole. Compared with the existing sealed pole with a cylindrical barrel structure, a seat body, a push-pull assembly and a crank arm are designed. The insulating shell, the pull rod assembly and the outlet assembly of the sealed pole assembly can be arranged at a certain angle. For example, the insulating shell can be arranged horizontally, and the outlet assembly and the pull rod assembly can be arranged nearly vertically. Through this arrangement, the overall length of the sealed pole assembly can be greatly shortened, and the pull rod assembly is more convenient to connect with the drive shaft for operating the pull rod assembly, and the distance between the lower end of the pull rod assembly and the operating shaft can be shortened, thereby greatly reducing the volume of the switch body, making the structure of the switch body more compact, reducing the use of the connecting rod mechanism for driving the pull rod assembly, and making the structure simpler.

[0059] The highly integrated and environment-friendly sealed pole assembly for an environmentally friendly gas cabinet of the present invention has a pull rod mechanism that drives the moving contact of the vacuum interrupter through a crank arm and a push-pull assembly, thereby realizing efficient and flexible movement of the moving contact and combining and separating the moving contact and the static contact of the vacuum interrupter.

[0060] The highly integrated and environmentally friendly sealed pole assembly for an environmentally friendly gas cabinet of the present invention can be made of insulating materials for the crank arm and the push-pull assembly. Through this arrangement, there is no need for a direct connection between the pull rod assembly and the moving contact of the vacuum arc extinguishing chamber. Compared with the solution in the prior art where the insulating pull rod is arranged at the lower end of the sealed pole assembly and directly connected to the moving contact, the insulation performance between the pull rod assembly and the moving contact can be greatly enhanced, thereby improving the safety of the switch equipment.

[0061] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that numerous changes, modifications, substitutions and alterations may be made to the embodiments without departing from the spirit and scope of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A highly integrated environmentally friendly solid-sealed pole assembly for an environmentally friendly gas cabinet, characterized in that: It comprises an insulating shell, a vacuum arc extinguishing chamber, a moving contact, a push-pull assembly, a crank arm, a lead-out assembly and a pull rod assembly. The insulating shell comprises a tube body portion for accommodating the vacuum arc extinguishing chamber and a seat body portion for accommodating the crank arm. The vacuum arc extinguishing chamber is arranged in the tube body portion. An assembly port corresponding to the lead-out assembly and the pull rod assembly is arranged at the lower part of the seat body portion. The lead-out assembly and the pull rod assembly are arranged below the seat body portion respectively. A lead-out seat is arranged at the end of the tube body portion. The lead-out seat is connected to the lead-out terminal of the vacuum arc extinguishing chamber. The crank arm is arranged in the seat body portion. The moving contact is connected to a side of the vacuum arc extinguishing chamber close to the seat body portion. The connecting rod of the moving contact is connected to the lead-out assembly through a flexible connection. The lead-out assembly is movably connected to the lower part of one side of the crank arm. The upper part of one side of the crank arm is movably connected to one end of the push-pull assembly. The other end of the push-pull assembly is fixedly connected to the connecting rod of the moving contact. The other side of the crank arm is movably connected to the pull rod assembly. The crank arm includes a front side plate and a rear side plate, a first hinge shaft and a second hinge shaft are provided between the front side plate and the rear side plate, the outlet assembly is hinged to the front side plate and the rear side plate through the first hinge shaft, the pull rod assembly is hinged to the front side plate and the rear side plate through the second hinge shaft, the front side and the rear side of the push-pull assembly are respectively provided with a rotating shaft portion, and the push-pull assembly is hinged to the front side plate and the rear side plate through the rotating shaft portion; The outlet assembly includes a stationary blade head and a connecting support, the upper end of the flexible connection is sleeved on the connecting rod of the moving contact, the connecting support is provided with a first connecting portion, a second connecting portion and a third connecting portion, the first connecting portion extends to the top of the stationary blade head, the first connecting portion, the flexible connection and the stationary blade head are fixedly connected by bolts, the second connecting portion extends to the side wall of the stationary blade head, the second connecting portion is fixedly connected to the stationary blade head by bolts, and the third connecting portion is provided with a lug, which is hingedly connected to the crank arm through the first hinge shaft.

2. The highly integrated environmentally friendly solid-sealed pole assembly for an environmentally friendly gas cabinet according to claim 1 is characterized in that: The push-pull assembly includes a spring, a first spring stopper and a second spring stopper. A limiting portion is provided at the end of the connecting rod of the moving contact. The first spring stopper, the spring and the second spring stopper are respectively sleeved on the connecting rod. The limiting portion limits the first spring stopper. The second spring stopper is fixedly connected to the connecting rod. The spring is arranged between the first spring stopper and the second spring stopper. A rotating shaft portion is respectively provided on the front and rear sides of the first spring stopper. The first spring stopper is movably connected to the crank arm through the rotating shaft portion.

3. The highly integrated environmentally friendly solid-sealed pole assembly for an environmentally friendly gas cabinet according to claim 1 is characterized in that: The upper end portion of the seat body is embedded with a metal connecting piece.

4. The highly integrated environmentally friendly solid-sealed pole assembly for an environmentally friendly gas cabinet according to claim 2, characterized in that: An end cover is also provided at one end of the seat body away from the vacuum arc extinguishing chamber, a sensor is provided on the end cover, a columnar sensor component is provided on the sensor, a sensor connecting rod is provided on the crank arm, a connecting portion is provided at one end of the sensor connecting rod, a through hole is provided in the connecting portion, the columnar sensor component passes through the through hole, the sensor connecting rod is slidably connected to the columnar sensor component, and the other end of the sensor connecting rod is movably connected to the crank arm through a rotating shaft portion on the front side or rear side of the first spring stopper.

5. The highly integrated environmentally friendly solid-sealed pole assembly for an environmentally friendly gas cabinet according to claim 1 is characterized in that: The pull rod assembly includes an insulating pull rod and a sleeve. The upper and lower ends of the insulating pull rod are respectively provided with connectors. The upper connector is sleeved on the sleeve, and the connector is fixedly connected to the sleeve. The sleeve is sleeved on the second hinge shaft.

6. The highly integrated environmentally friendly solid-sealed pole assembly for an environmentally friendly gas cabinet according to claim 1, characterized in that: The lower part of the seat body is provided with assembly openings corresponding to the outlet wire assembly and the pull rod assembly respectively, and corresponding protective sleeves are provided at the assembly openings.

7. The highly integrated environmentally friendly solid-sealed pole assembly for an environmentally friendly gas cabinet according to claim 1, characterized in that: The insulating shell is made of nylon.

Images