Windproof drop-out fuse

Abstract

The utility model provides a windproof drop-out fuse. The windproof drop-out fuse comprises an insulating bracket and a fuse tube, the insulating support comprises a supporting frame, a first clamping contact, a second clamping contact and a hook, the first clamping contact is arranged at one end of the supporting frame, the second clamping contact is arranged at the other end of the supporting frame, and the hook is further fixed to the other end of the supporting frame; one end of the fuse tube is provided with an elastic contact mechanism, the elastic contact mechanism comprises a contact sleeve, a first contact and a first pull ring, the first contact is fixed on the contact sleeve, and the contact sleeve is sleeved with the fuse tube; the other end of the fuse tube is provided with a second contact and a fixed shaft; when the fuse tube is clamped on the insulating support, the contact sleeve is connected in the first clamping contact, the first contact is in contact connection with the first clamping contact, the second contact is clamped in the second clamping contact, and the first contact can move upwards to be separated from the first clamping contact by moving the first pull ring. The wind-proof drop-out fuse solves the problem that an existing wind-proof drop-out fuse is inconvenient to disassemble and assemble.

Description

Technical Field

[0001] The present application relates to the field of fuses, and in particular to a windproof drop-out fuse. Background Art

[0002] The drop-out fuse is a common outdoor high-voltage protection device, widely used in power systems, especially for outgoing line protection in small power grids and small substations.

[0003] Existing drop-out fuses typically consist of an insulating bracket and a removable fuse tube. The fuse or melt is located inside the removable fuse tube, and the porcelain bottle is mounted on the operating mechanism. Typically, the insulating bracket is fixed to a high-voltage power grid, and the operator uses a long pole to install the fuse tube on the insulating bracket to complete the installation of the drop-out fuse. When the drop-out fuse blows, the operator uses the long pole to remove the fuse tube from the insulating bracket for repair or replacement. In some areas with strong winds, existing drop-out fuses need to add multiple constraints to provide wind protection, which increases the difficulty of installing and removing the fuse tube.

[0004] In view of the above-mentioned defects, the utility model provides a windproof drop-out fuse. Utility Model Content

[0005] The embodiments of the present application provide a windproof drop-out fuse to solve the problem of inconvenience in disassembly and installation of existing windproof drop-out fuses.

[0006] The embodiment of the present application provides a windproof drop-out fuse, comprising an insulating bracket and a fuse tube; wherein

[0007] The insulating bracket includes a support frame, a first card contact, a second card contact and a hook. The first card contact is provided at one end of the support frame, the second card contact is provided at the other end of the support frame, and the hook is also fixed at the other end of the support frame.

[0008] The fuse tube is used to fix the fuse. One end of the fuse tube is provided with an elastic contact mechanism, which includes a contact sleeve, a first contact and a first pull ring. The first contact is fixed on the contact sleeve, and the contact sleeve is sleeved with the fuse tube. The other end of the fuse tube is provided with a second contact and a fixed shaft.

[0009] When the fuse tube is clamped on the insulating bracket, the fixed shaft is in the hook, the contact sleeve is connected to the first clamping contact, the first contact is in contact with the first clamping contact, and the second contact is clamped in the second clamping contact. By moving the first pull ring, the first contact can be extended and separated from the first clamping contact.

[0010] Furthermore, the elastic contact mechanism further includes a first spring and a first limit block, wherein:

[0011] The contact bushing is sleeved outside the fuse tube through the first spring. The first contact is fixed on the contact bushing. A guiding groove is formed on the outer wall of the contact bushing, and the guiding groove is used to limit the movement track of the first pull ring. The fixed part of the first pull ring is rotatably connected to the inner wall of the contact bushing. A first limiting block is fixed on the outer wall of the fuse tube inside the contact bushing, and the first limiting block is used to support the first pull ring.

[0012] Further, the fuse tube includes a second insulator, a fuse tube support and a fuse tube body. The elastic contact mechanism is arranged at one end of the second insulator, and the second contact is arranged at the other end of the second insulator; wherein

[0013] The fuse tube support is fixed on the second insulator. The fuse tube support is used to support the fuse tube body. The fuse tube support is movably connected to the fuse tube body. The fuse tube body is used to accommodate the fuse wire, and the fuse tube body can change its position as the fuse wire melts.

[0014] Further, a positioning cover and a second spring are arranged on the fuse tube support. One end of the fuse tube body is rotatably connected to the fuse tube support. One end of the fuse tube body is arranged inside the positioning cover. There is a baffle on one side of the positioning cover close to the second insulator, and the baffle is fixed to the side wall of one end of the fuse tube body through the second spring. An opening is arranged on the side of the positioning cover far from the second insulator.

[0015] Further, the elastic contact mechanism further includes a first spring and a first limiting block, wherein:

[0016] The contact bushing is sleeved outside the second insulator through the first spring. A guiding groove is formed on the outer wall of the first contact, and the guiding groove is used to limit the movement track of the first pull ring. The fixed part of the first pull ring is rotatably connected to the inner wall of the contact bushing. A first limiting block is fixed on the outer wall of the second insulator inside the first contact, and the first limiting block is used to support the first pull ring.

[0017] Further, the support frame includes a first insulator, a first copper bus bar frame, a second copper bus bar frame, a first conductive copper bus bar and a second conductive copper bus bar. The hook is fixed on the second copper bus bar frame; wherein:

[0018] One end of the first insulator is fixed with the first copper bus bar frame. The first conductive copper bus bar is fixed on the first copper bus bar frame, and the first conductive copper bus bar is in contact connection with the first contact head.

[0019] The other end of the first insulator is fixed with the second copper bus bar frame. The second conductive copper bus bar is fixed on the second copper bus bar frame, and the second conductive copper bus bar is in contact connection with the second contact head.

[0020] Further, a top cover is also movably connected to the first copper bus bar frame, and the top cover can be buckled on the top of the first contact head;

[0021] The bottom of the top cover is provided with a clamping part, which clamps outside the first contact head when buckling.

[0022] Furthermore, a fixing bracket is also fixed in the middle section of the first insulator.

[0023] Furthermore, a second pull ring is also fixed on the contact sleeve.

[0024] Furthermore, a positioning hole is also provided at the other end of the fuse tube.

[0025] A windproof type drop-out fuse provided by the present application includes an insulating support and a fuse tube. One end of the fuse tube is provided with an elastic contact mechanism, and the elastic contact mechanism includes a contact sleeve, a first contact and a first pull ring; the following effects can be achieved:

[0026] In the present application, the fixed shaft of the fuse tube is restricted by a hook, the contact sleeve is clamped by the first contact head, and the second contact is clamped by the second contact head, thereby improving the windproof effect of the present application; and the fuse tube can be easily disassembled by pulling down the elastic contact mechanism, reducing the disassembly difficulty and improving the operability. Description of the Drawings

[0027] The drawings here are incorporated into the specification and constitute a part of this specification, showing the embodiments in line with the present application, and are used together with the specification to explain the principle of the present application.

[0028] Figure 1 It is a schematic structural diagram of a windproof type drop-out fuse provided by an embodiment of the present application;

[0029] Figure 2 It is a schematic structure of the fuse tube provided by an embodiment of the present application Figure 1 ;

[0030] Figure 3 It is provided by an embodiment of the present application [[ID=3&]] Figure 2 left view;

[0031] Figure 4 It is provided by an embodiment of the present application Figure 2 internal structure diagram;

[0032] Figure 5 It is a schematic structure of the fuse tube provided by an embodiment of the present application Figure 2 ;

[0033] Figure 6 It is provided by an embodiment of the present application Figure 4 left view;

[0034] Figure 7 It is provided by an embodiment of the present application Figure 4 internal structure diagram;

[0035] Figure 8 This is a schematic structural diagram of the state after the fuse tube body bounces open provided by the embodiment of the present application;

[0036] Figure 9 This is a schematic structural diagram of the insulating bracket provided by the embodiment of the present application.

[0037] Through the above-mentioned drawings, the clear embodiments of the present application have been shown, and there will be more detailed descriptions hereinafter. These drawings and text descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments.

[0038] Description of reference numerals:

[0039] 100 - Insulating bracket;

[0040] 200 - Fuse tube;

[0041] 300 - Fuse;

[0042] 110 - Support frame; 120 - First contact head; 130 - Second contact head; 140 - Hook; 150 - Top cover;

[0043] 111 - First insulator; 112 - First copper bus bar rack; 113 - Second copper bus bar rack; 114 - First conductive copper bus bar; 115 - Second conductive copper bus bar; 116 - Fixing frame; 117 - First wiring part; 118 - Second wiring part;

[0044] 151 - Clamping part;

[0045] 210 - Second contact; 220 - Elastic contact mechanism; 230 - Fixed shaft; 240 - Positioning hole; 250 - Second insulator; 260 - Fuse tube support; 270 - Fuse tube body;

[0046] 221 - First contact; 222 - First pull ring; 223 - First limit block; 224 - Contact sleeve; 225 - First spring; 226 - Second limit block; 227 - Second pull ring;

[0047] 261 - Positioning cover; 262 - Second spring. Detailed implementation manners

[0048] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0049] In the description of the present application, it should be noted that, unless otherwise clearly defined and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, or an indirect connection through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0050] In the description of the present application, it should be understood that the terms used, including "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are used to indicate the orientation or position relationship, and are based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the devices or methods of the present application, rather than for indicating or implying that the indicated devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0051] In the specification, claims and above-mentioned drawings of the present application, the terms "first", "second", "third" are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that such objects can be interchanged under appropriate circumstances, so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here.

[0052] In addition, the terms "including" and "having" and any variations thereof described are intended to cover non-exclusive inclusions. For example, a process, method, system, product or maintenance tool that includes a series of steps or units does not have to be limited to those steps or units clearly listed, but also includes other steps or units that are not clearly listed or are inherent to these processes, methods, products or maintenance tools.

[0053] In the prior art, in some areas with strong winds, due to the wind force, the fuse tube body may be blown off by the wind without a fault, and the wind protection effect is not good. In some existing wind protection structures, in order to prevent the fuse tube from falling due to strong wind, it is necessary to additionally add constraints to the fuse tube, but this also increases the difficulty of installing and disassembling the fuse tube.

[0054] In order to solve the above problems, the utility model provides a windproof drop-out fuse.

[0055] The following is a detailed description of a windproof drop-out fuse provided by the present application in conjunction with the accompanying drawings.

[0056] Figure 1 This is a schematic structural diagram of a windproof drop-out fuse provided in this application.

[0057] like Figure 1 As shown, the embodiment of the present application includes an insulating support 100 and a fuse tube 200;

[0058] Among them, the insulating bracket 100 includes a support frame 110, a first card contact 120, a second card contact 130 and a hook 140. The first card contact 120 is provided at one end of the support frame 110, and the second card contact 130 is provided at the other end of the support frame 110. The hook 140 is also fixed at the other end of the support frame 110.

[0059] The fuse tube 200 is used to fix the fuse. An elastic contact mechanism 220 is provided at one end of the fuse tube 200. The elastic contact mechanism 220 includes a contact sleeve 224, a first contact 221, and a first pull ring 222. The first contact 221 is fixed to the contact sleeve 224, and the contact sleeve 224 is sleeved with the fuse tube 200. The other end of the fuse tube 200 is provided with a second contact 210 and a fixed shaft 230.

[0060] Among them, when the fuse tube 200 is clamped on the insulating bracket 100, the fixed shaft 230 is in the hook 140, the contact sleeve 224 is connected to the first card contact 120, the first contact 221 is in contact and connected with the first card contact 120, and the second contact 210 is clamped in the second card contact 130. By moving the first pull ring 222, the first contact 221 can be extended and separated from the contact with the first card contact 120.

[0061] Furthermore, the first contact 221 is raised on the contact sleeve 224 , which aims to increase the contact area between the first contact 221 and the first card contact 120 to ensure conduction; and to ensure that the first contact 221 and the first card contact 120 can be firmly connected.

[0062] Specifically, the fuse tube 200 includes a resilient contact mechanism 220. During installation, the insulating bracket 100 is fixed to a high-voltage power grid, with the first card contact 120 located at the top and the second card contact 130 located at the bottom. The operator first hangs the fixed shaft 230 on the fixed hook 140 using an operating lever. Due to the influence of gravity, part of the contact sleeve 224 is located at the bottom. The operator then hangs the first pull ring 222 using the operating lever, moves the entire fuse tube 200 around the fixed shaft 230, and then snaps the resilient contact mechanism 220 and part of the fuse tube 200 into the first card contact 120 to complete the installation.

[0063] Similarly, during disassembly, the first contact 221 is disengaged from the first card contact 120 , and the card connection position is loosened to facilitate disassembly.

[0064] Specifically, the fuse tube 200 is used to install a fuse. After installation, one end of the fuse is connected to the first contact 221, and the other end is connected to the second contact 210. When the insulating bracket 100 is fixed to a high-voltage power grid, it is also necessary to connect the first card contact 120 to the corresponding wire and the second card contact 130 to the corresponding wire. After the fuse tube 200 is installed, power is supplied by connecting the first card contact 120, the first contact 221, the fuse, the second contact 210, and the second card contact 130 in the order of conduction or the reverse order.

[0065] Specifically, during disassembly, the first pull ring 222 is pulled down by the operating rod, and the first contact 221 moves up and is offset from the first card contact 120. Under the influence of the downward pulling of the first pull ring 222 and gravity, the top of the fuse tube 200 falls, and the fixed shaft 230 is still partially stuck in the hook 140. The fuse tube 200 needs to be removed by the operating rod.

[0066] Figure 2 Schematic diagram of the structure of the fuse tube and elastic contact mechanism provided in the embodiment of the present application Figure 1 ; Figure 3 Provided in the embodiments of this application Figure 2 Left view of; Figure 4 Provided in the embodiments of this application Figure 2 Internal structure diagram.

[0067] See also Figures 2 to 4 The embodiment of the present application provides an implementation of a fuse tube, wherein an elastic contact mechanism 220 is provided on the fuse tube 200, and the elastic contact mechanism 220 includes a first contact 221, a first pull ring 222, a contact sleeve 224, a first spring 225 and a first limit block 223.

[0068] Among them, the contact sleeve 224 is sleeved outside the fuse tube 200 through the first spring 225. The first contact 221 is fixed on the contact sleeve 224. A guiding groove is formed on the outer wall of the contact sleeve 224, and the guiding groove is used to limit the movement track of the first pull ring 222. The fixed part of the first pull ring 222 is rotatably connected to the inner wall of the contact sleeve 224. A first limiting block 223 is fixed on the outer wall of the fuse tube 200 inside the contact sleeve 224, and the first limiting block 223 is used to support the first pull ring 222.

[0069] Specifically, the fuse tube 200 is used to fix the fuse. When the fuse is fixed inside, one end of the fuse is in contact and conduction with the first contact 221, and the other end of the fuse is in contact and conduction with the second contact 210.

[0070] Specifically, the fuse tube 200 is successively sleeved with the first spring 225 and the contact sleeve 224 from the inside to the outside. One end of the first spring 225 is fixedly connected to the contact sleeve 224, and the other end of the first spring 225 is fixedly connected to the fuse tube 200. The fixed part of the first pull ring 222 extends into the inside of the contact sleeve 224 through the guiding groove and is movably connected to its inner wall.

[0071] Specifically, the fixed part of the first pull ring 222 is hinged to the inner wall of the contact sleeve 224, and the fixed part is a fixed rod structure.

[0072] Specifically, the first limiting block 223 is fixed on the outer wall of the fuse tube 200, at one end of the first pull ring 222 close to the fuse tube 200.

[0073] Specifically, both the first clamping contact 120 and the second clamping contact 130 are a pair of clamping piece structures.

[0074] Specifically, when the first pull ring 222 is not subject to external force, that is, when the first spring 225 does not deform, if the first pull ring 222 is pulled down, according to the lever principle, for the fixed rod lever of the first pull ring 222, with the first limiting block 223 as the fulcrum of the lever, when one end of the first pull ring 222 is pulled down by force, one end of the fixed part will move upward to stretch the first spring 225, thereby driving the first contact 221 to move upward, so that the first contact 221 extends and disengages from the contact with the first clamping contact 120, which is convenient for disassembly.

[0075] As an embodiment, in order to prevent the first spring 225 from being compressed, resulting in the downward movement of the first contact 221, when the first pull ring 222 is not subject to external force, that is, when the first spring 225 does not deform, the top of the contact sleeve 224 is sealed, and the top end of the fuse tube 200 is in contact connection with the inner wall of the top end of the contact sleeve 224, that is, the top end of the fuse tube 200 abuts against the top end of the contact sleeve 224, so that the fuse tube 200 and the contact sleeve 224 cannot contract.

[0076] As another embodiment, in order to prevent the first spring 225 from being compressed, which may cause the first contact 221 to move downward, a second limiting block 226 is also fixed on the outer wall of the fuse tube 200. The second limiting block 226 is located at the bottom of the contact sleeve 224. When the first pull ring 222 is not subject to external force, the mouth of the contact sleeve 224 abuts against the second limiting block 226, so that the fuse tube 200 and the first contact 221 cannot contract with each other.

[0077] Furthermore, a fixed shaft 230 is fixed at the other end of the fuse tube 200. The fixed shaft 230 is arranged at the port of the fuse tube 200. The second contact 210 is fixed on the outer wall near the other end of the fuse tube 200. The axis of the fixed shaft 230 is perpendicular to the axis of the fuse tube 200.

[0078] Furthermore, the second contact 210 is provided in a protruding shape, which is convenient for contacting and conducting electricity with the second card contact head 130.

[0079] As some embodiments, a second pull ring 227 is also fixed on the contact sleeve 224.

[0080] Specifically, during installation, the operating rod is used to hook the first pull ring 222 and drive one end of the fuse tube 200 to move upward and be clamped and tied in the first card contact head 120. Since the first pull ring 222 is a movable mechanism, it may affect the force on the fuse tube 200, resulting in inconvenient installation. Therefore, with the fixed first pull ring 222, the installation can be stabilized. During disassembly, the first pull ring 222 is pulled downward to achieve disassembly.

[0081] Furthermore, the first pull ring 222 and the second pull ring 227 can be set in different colors for easy distinction by the staff.

[0082] As some embodiments, a positioning hole 240 is also provided at the other end of the fuse tube 200.

[0083] Specifically, the positioning hole 240 is arranged in the middle section of the fixed shaft 230, which is convenient for the operating rod to apply force, hang the fixed shaft 230 upward, or remove the fixed shaft 230 from the hook 140.

[0084] The fuse tube 200 provided by the embodiment of the present application is provided with an elastic contact mechanism 220. The elastic contact mechanism 220 includes a first contact 221, a first pull ring 222, a contact sleeve 224, a first spring 225, and a first limiting block 223, and can achieve the following technical effects:

[0085] In this embodiment, the position of the fixed shaft 230 is restricted by the hook 140, the contact sleeve 224 is clamped by the first card contact head 120, the second contact 210 is clamped by the first card contact head 120, and the position of the fuse tube 200 is restricted by the fixed shaft 230, thereby improving the wind resistance effect.

[0086] The structure of this embodiment is simple and easy to operate, enabling easy and safe operation. During installation, the fixed shaft 230 can be hung on the fixed hook 140 through the operating rod, and the contact head sleeve 224 can be clamped in the first contact head 120 through the second pull ring 227 or the first pull ring 222; during disassembly, pull down the first pull ring 222, and the fuse tube 200 falls off, and disassembly is achieved by removing the fixed shaft 230 from the hook 140.

[0087] Figure 5 Schematic diagram of the structure of the fuse tube provided by the embodiment of the present application Figure 2 ; Figure 6 Provided by the embodiment of the present application Figure 5 Left view; Figure 7 Provided by the embodiment of the present application Figure 5 Internal structure diagram, Figure 8 Schematic diagram of the structure of the fuse tube body in the state after it bounces off provided by the embodiment of the present application.

[0088] See Figures 5 to 8 As shown in, the embodiment of the present application provides an implementation manner of a fuse tube 200. In this embodiment, an elastic contact mechanism 220 is provided on the fuse tube 200. The fuse tube 200 includes a second insulator 250, a fuse tube support 260, and a fuse tube body 270. The elastic contact mechanism 220 is provided at one end of the second insulator 250, and the second contact 210 is provided at the other end of the second insulator 250;

[0089] Among them, the fuse tube support 260 is fixed on the second insulator 250. The fuse tube support 260 is used to support the fuse tube body 270. The fuse tube support 260 is movably connected to the fuse tube body 270. The fuse tube body 270 is used to accommodate the fuse 300, and the fuse tube body 270 can change its position as the fuse 300 melts.

[0090] Specifically, the fuse tube body 270 can change its position as the fuse 300 melts. When the staff is at a distance, they can visually determine whether the fuse 300 has melted.

[0091] Specifically, when the fuse 300 is arranged in the fuse tube body 270, one end of the fuse 300 can be connected to the first contact 221, and the other end of the fuse 300 can be connected to the second contact 210;

[0092] As some embodiments, one end of the fuse tube body 270 is connected to the first contact 221 through a conductor; the fuse 300 is fixed in the fuse tube body 270, one end of which is sequentially conducted with the conductor and the first contact 221, the wiring part of the other end of the fuse 300 is arranged on the second contact 210, and the other end of the fuse 300 is fixed on the wiring part of the second contact 210.

[0093] As other embodiments, the connection point at one end of the fuse 300 is arranged on the first contact 221, and the connection point at the other end of the fuse 300 is arranged on the second contact 210. When installing the fuse 300, one end of it is fixed at the connection point of the first contact 221, the middle part is arranged inside the fuse tube body 270, and the other end of it is fixed at the connection point of the second contact 210.

[0094] Specifically, the second insulator 250 is a ceramic insulating bottle, which is an important part of the drop-type fuse. It is usually made of high-strength ceramics and has good electrical insulation performance and weather resistance.

[0095] Specifically, a positioning cover 261 and a second spring 262 are arranged on the fuse tube support 260. One end of the fuse tube body 270 is rotatably connected to the fuse tube support 260. One end of the fuse tube body 270 is arranged inside the positioning cover 261. There is a baffle on one side of the positioning cover 261 close to the second insulator 250. The baffle is fixed to the side wall of one end of the fuse tube body 270 through the second spring 262. An opening is arranged on the side of the positioning cover 261 far from the second insulator 250.

[0096] Specifically, when the fuse 300 is arranged inside the fuse tube body 270 and connected to the first contact 221 and the second contact 210, the fuse 300 is taut, the second spring 262 is in a compressed state, and the baffle plays a limiting role on the fuse tube body 270, making the direction of the fuse tube 200 body parallel or nearly parallel to that of the second insulator 250. When the fuse 300 melts, the spring bounces the fuse tube 200 body to the side away from the second insulator 250 and rotates around the movable connection point towards the opening of the positioning cover 261, as Figure 7 is the structural schematic diagram after the fuse tube 200 body bounces off.

[0097] Specifically, the elastic contact mechanism 220 further includes a contact sleeve 224, a first contact 221, a first pull ring 222, a first spring 225 and a first limit block 223.

[0098] Among them, the contact sleeve 224 is sleeved outside one end of the second insulator 250 through the first spring 225. A guide groove is opened on the outer wall of the first contact 221, and the guide groove is used to limit the movement track of the first pull ring 222. The fixed part of the first pull ring 222 is rotatably connected to the inner wall of the contact sleeve 224. A first limit block 223 is fixed on the outer wall of the second insulator 250 inside the first contact 221, and the first limit block 223 is used to support the first pull ring 222.

[0099] Specifically, the elastic contact mechanism 220 in this embodiment is similar in structure and technical effect to the above-mentioned elastic contact mechanism 220. The difference is that the elastic contact mechanism 220 in this embodiment is connected to the outside of one end of the second insulator 250, and will not be elaborated here.

[0100] Further, the fixed shaft 230 is fixed at the other end of the second insulator 250. The fixed shaft 230 is disposed at the port of the second insulator 250. The second contact 210 is fixed on the outer wall near the other end of the second insulator 250. The axis of the fixed shaft 230 is perpendicular to the axis of the second insulator 250.

[0101] Further, the second contact 210 is provided in a protruding manner to facilitate contact conduction with the second card contact head 130.

[0102] In some embodiments, a second pull ring 227 is further fixed on the contact sleeve 224.

[0103] In some embodiments, a positioning hole 240 is further provided at the other end of the second insulator 250 and is disposed in the middle section of the fixed shaft 230.

[0104] Specifically, the setting of the second pull ring 227 and the positioning hole 240 is similar to the structure of the second pull ring 227 and the positioning hole 240 described above, and the technical effects are the same, so details will not be repeated here.

[0105] For the fuse tube 200 provided by the embodiment of the present application, an elastic contact mechanism 220 is provided on the fuse tube 200. The fuse tube 200 includes a second insulator 250, a fuse tube bracket 260, and a fuse tube body 270. The elastic contact mechanism 220 is disposed at one end of the second insulator 250, and the second contact 210 is disposed at the other end of the second insulator 250. The following technical effects can be achieved:

[0106] In this embodiment, the position of the fixed shaft 230 is restricted by the hook 140, the contact sleeve 224 is clamped by the first card contact head 120, the second contact 210 is clamped by the first card contact head 120, and the position of the fuse tube 200 is restricted by the fixed shaft 230, improving the wind resistance effect.

[0107] The structure of this embodiment is simple and the operation is convenient, and the operation can be carried out easily and safely. During installation, the fixed shaft 230 can be hung on the fixed hook 140 through the operating rod, and the contact sleeve 224 can be clamped in the first card contact head 120 through the second pull ring 227 or the first pull ring 222; during disassembly, the first pull ring 222 is pulled down, the fuse tube 200 falls off, and the disassembly is achieved by removing the fixed shaft 230 from the hook 140.

[0108] The fuse tube body 270 of this embodiment can change its position as the fuse 300 melts. When the staff is at a distance, it can be directly determined whether the fuse 300 has melted, facilitating circuit inspection.

[0109] Figure 9This is a schematic structural diagram of the insulating bracket provided by the embodiment of the present application. The insulating bracket 100 will be specifically described below.

[0110] As Figure 9 shown, the support frame 110 includes a first insulator 111, a first copper bar rack 112, a second copper bar rack 113, a first conductive copper bar 114 and a second conductive copper bar 115. The hook 140 is fixed on the second copper bar rack 113.

[0111] Among them, one end of the first insulator 111 is fixed with a first copper bar rack 112, the first conductive copper bar 114 is fixed on the first copper bar rack 112, and the first conductive copper bar 114 is in contact connection with the first contact head 120.

[0112] Among them, the other end of the first insulator 111 is fixed with a second copper bar rack 113, the second conductive copper bar 115 is fixed on the second copper bar rack 113, and the second conductive copper bar 115 is in contact connection with the second contact head 130.

[0113] Specifically, the first insulator 111 is a ceramic insulating bottle.

[0114] Specifically, when installing the insulating bracket 100, the insulating bracket 100 is fixed on the high-voltage electric pole, and is respectively connected to the corresponding high-voltage wires through the first wiring part 117 and the second wiring part 118. Conductivity is achieved through the conductive copper bar and the corresponding contact head.

[0115] Furthermore, a first wiring part 117 is also fixed on the first copper bar rack 112, and the first wiring part 117 is in contact connection with the first conductive copper bar 114.

[0116] Furthermore, a second wiring part 118 is also fixed on the second copper bar rack 113, and the second wiring part 118 is in contact connection with the second conductive copper bar 115.

[0117] Furthermore, the hook 140 is a pair of hook structures, both of which are fixed on the second copper bar rack 113. During installation, both ends of the fixed shaft 230 are hung on the corresponding hooks 140, and the tube body of the fuse tube 200 is located between the two hook structures.

[0118] As an implementation manner, the insulating bracket 100 further includes a top cover 150. The top cover 150 is movably connected to the first copper bar rack 112, and the top cover 150 can be buckled on the top of the first contact head 120; a clamping part 151 is provided at the bottom of the top cover 150. When buckled, the clamping part 151 clamps the outside of the first contact head 120.

[0119] Specifically, during installation, the top cover 150 is opened, the fuse tube 200 is connected, and the top cover 150 is snapped on. The clamping portion 151 of the top cover 150 is used to clamp the outside of the first card contact 120. The top cover 150 limits the position of the contact sleeve 224 to prevent it from moving up accidentally, and can further clamp the fuse tube 200 when the fuse 300 is working.

[0120] Specifically, the top cover 150 is hinged on the second copper busbar 113 .

[0121] Specifically, when disassembling, open the top cover 150, pull down the first pull ring 222, and remove the fixed shaft 230 from the hook 140 to complete the disassembly. Figure 9 The top cover 150 is shown in a state where it is lifted up.

[0122] Furthermore, the insulating bracket 100 further includes a fixing frame 116 , and the fixing frame 116 is also fixed to the middle end of the first insulator 111 .

[0123] Specifically, when the insulating support 100 is installed, the fixing frame 116 serves as a fixed position for fixing the insulating support 100 on the high-voltage power pole.

[0124] The insulating bracket 100 provided in the embodiment of the present application can achieve the following technical effects:

[0125] During installation, the insulating bracket 100 provided in the embodiment of the present application can clamp the contact sleeve 224 (one end of the fuse tube 200) through the first clamping contact 120, further clamp the first clamping contact 120 through the clamping portion 151, and restrain the top of the contact sleeve 224 (one end of the fuse tube 200) through the top cover 150. The hook 140 restrains the fixed axis 230 (the other end of the fuse tube 200), thereby stably restraining the fuse tube 200 on the insulating bracket 100 and improving the windproof effect of the present fuse.

[0126] During disassembly, the top cover 150 is opened, the first pull ring 222 is pulled downward, and the fixed shaft 230 is removed from the hook 140. The simple structure and easy operation improve the windproof effect of the fuse without increasing the difficulty of installation and removal. This ensures that maintenance personnel can operate easily and safely in all weather conditions, thereby improving the reliability and safety of the entire power system.

[0127] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0128] Finally, it should be noted that: After considering the specification and practicing the utility model disclosed herein, those skilled in the art will readily conceive of other embodiments of the present utility model. The present utility model is intended to cover any variations, uses, or adaptations of the present utility model, which follow the general principles of the present utility model and include the common general knowledge or conventional technical means in the technical field not disclosed in the present utility model. It is not limited to the exact structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present utility model is only limited by the appended claims.

Claims

1. A windproof type drop-out fuse, characterized in that, It includes an insulating bracket and a fuse tube; among them The insulating bracket includes a support frame, a first clamping contact head, a second clamping contact head and a hook. One end of the support frame is provided with the first clamping contact head, the other end of the support frame is provided with the second clamping contact head, and the other end of the support frame is also fixed with a hook; The fuse tube is used to fix the fuse. One end of the fuse tube is provided with an elastic contact mechanism, and the elastic contact mechanism includes a contact sleeve, a first contact and a first pull ring. The first contact is fixed on the contact sleeve, and the contact sleeve is sleeved on the fuse tube; the other end of the fuse tube is provided with a second contact and a fixed shaft; When the fuse tube is clamped on the insulating bracket, the fixed shaft is located within the hook, the contact sleeve is connected within the first clamping contact head, the first contact is in contact connection with the first clamping contact head, and the second contact is clamped within the second clamping contact head. By moving the first pull ring, the first contact can be extended to disengage from the contact with the first clamping contact head.

2. The fuse according to claim 1, wherein The elastic contact mechanism further includes a first spring and a first limit block, where: The contact sleeve is sleeved outside the fuse tube through the first spring. The first contact is fixed on the contact sleeve. A guide groove is formed on the outer wall of the contact sleeve for restricting the movement track of the first pull ring. The fixed part of the first pull ring is rotatably connected to the inner wall of the contact sleeve. A first limit block is fixed on the outer wall of the fuse tube inside the contact sleeve for supporting the first pull ring.

3. The fuse according to claim 1, characterized in that, The fuse tube includes a second insulator, a fuse tube support and a fuse tube body. The elastic contact mechanism is arranged at one end of the second insulator, and the second contact is arranged at the other end of the second insulator; Among them The fuse tube support is fixed on the second insulator. The fuse tube support is used to support the fuse tube body. The fuse tube support is movably connected to the fuse tube body. The fuse tube body is used to accommodate the fuse, and the fuse tube body can change its position as the fuse melts.

4. The fuse according to claim 3, characterized in that, A positioning cover and a second spring are arranged on the fuse tube support. One end of the fuse tube body is rotatably connected to the fuse tube support. One end of the fuse tube body is arranged within the positioning cover. There is a baffle on one side of the positioning cover close to the second insulator. The baffle is fixed to the side wall of one end of the fuse tube body through the second spring. An opening is arranged on the side of the positioning cover far from the second insulator.

5. The fuse according to claim 3, characterized in that, The elastic contact mechanism further includes a first spring and a first limit block, where: The contact sleeve is sleeved outside the second insulator through the first spring. A guide groove is formed on the outer wall of the first contact for restricting the movement track of the first pull ring. The fixed part of the first pull ring is rotatably connected to the inner wall of the contact sleeve. A first limit block is fixed on the outer wall of the second insulator inside the first contact for supporting the first pull ring.

6. The fuse according to any one of claims 1-5, characterized in that, The support frame includes a first insulator, a first copper busbar rack, a second copper busbar rack, a first conductive copper busbar, and a second conductive copper busbar, and the hook is fixed on the second copper busbar rack; wherein: One end of the first insulator is fixed with the first copper busbar rack, the first conductive copper busbar is fixed on the first copper busbar rack, and the first conductive copper busbar is in contact connection with the first contact head; The other end of the first insulator is fixed with the second copper busbar rack, the second conductive copper busbar is fixed on the second copper busbar rack, and the second conductive copper busbar is in contact connection with the second contact head.

7. The fuse according to claim 6, wherein, A top cover is also movably connected to the first copper busbar rack, and the top cover can be buckled on the top of the first contact head; A clamping portion is arranged at the bottom of the top cover, and when buckled, the clamping portion clamps outside the first contact head.

8. The fuse according to claim 6, characterized in that, A fixing frame is also fixed in the middle section of the first insulator.

9. The fuse according to any one of claims 1-5, characterized in that, A second pull ring is also fixed on the contact bushing.

10. The fuse according to any one of claims 1-5, characterized in that, A positioning hole is also arranged at the other end of the fuse tube.

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