Outdoor closed expulsion fuse

Abstract

The invention discloses an outdoor closed expulsion fuse, and belongs to the field of emergency protection devices. Comprising a fuse body, a fixing plate, two groups of plugging connection assemblies and a group of connection reinforcing assemblies. The upper end and the lower end of the fuse body are respectively connected with a group of plug-in connection assemblies, and the fuse body is connected with the fixing plate through the two groups of plug-in connection assemblies. And the connection reinforcing assembly is arranged on one side, deviating from the fuse body, of the fixing plate and is used for reinforcing and connecting the two groups of plugging connection assemblies. The inserting connection assembly comprises an inserting rod, and a through groove is formed in the fixing plate. One end of the insertion rod is connected with the fuse body, and the other end penetrates through the through groove; clamping grooves are formed in the ends, penetrating through the fixing plates, of the inserting rods; in the mounting and dismounting processes, the rotating plate only needs to be operated through the pull rod, so that the device is more suitable for high-altitude operation, and is more convenient and rapid; the fuse body can be stably installed on the fixing plate through the cooperation of the rotating plate and the pressing block. The connection reinforcing assembly provides guarantee for fastening of the whole structure, and installation is fast and convenient.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of emergency protection devices, and particularly relates to an outdoor closed injection fuse. BACKGROUND

[0002] The injection fuse belongs to the emergency protection device.

[0003] The working principle of the injection fuse is based on the arc processing mechanism generated after the melting of the fuse body, and the rapid arc extinguishing is realized through the arc extinguishing device. The specific working principle is as follows:

[0004] 1. Arc extinguishing principle:

[0005] When the line is short-circuited or overloaded, the fuse body is melted. When the fuse body is melted, the high temperature of the arc decomposes the surrounding gas medium into gas, the pressure in the fuse body tube (also known as the fuse tube) rapidly rises, the generated arc decomposes the arc extinguishing agent in the arc extinguishing tube to generate gas pressure, and the arc is blown out by the longitudinal gas flow of the ionized gas ejected out of the tube and the arc is blown out from the slit.

[0006] 2. Structural features:

[0007] The fuse body tube adopts a fully enclosed structure to avoid external environmental interference, and the slit arc extinguishing mode improves the arc extinguishing stability and safety. Compared with the traditional drop-out fuse, the opening current capacity is stronger.

[0008] As a commonly used emergency protection device, the injection fuse can be divided into double-end exhaust, single-end exhaust and step-by-step exhaust according to the exhaust mode; according to the arc extinguishing medium, there are engineering composite tube, boric acid and solid material types; according to the action structure, there are pop-out type, open isolation type and drop-out type, etc.

[0009] The utility model patent with the authorized announcement date of January 23, 2024 and the authorized announcement number of CN 220382036 U discloses an outdoor full-insulation closed injection fuse, which comprises a porcelain sleeve, an incoming line is fixedly installed at the upper end of the porcelain sleeve, an outgoing line is fixedly installed at the lower end of the porcelain sleeve, an upper static contact is arranged at the top of the porcelain sleeve, the upper static contact is electrically connected with the incoming line, a lower static contact is arranged at the bottom of the porcelain sleeve, the lower static contact is electrically connected with the outgoing line, an upper movable contact is threadedly connected to the top of a fuse body, a lower movable contact is sleeved with the outer edge of the fuse body, a spring is fixedly connected to the end of the fuse body, the other end of the spring is connected with the lower movable contact, a fuse is connected between the upper movable contact and the lower movable contact, the fuse body is inserted into the porcelain sleeve, the upper movable contact is clamped with the upper static contact, and the lower movable contact is threadedly connected with the lower static contact. It has strong anti-pollution ability, is convenient to use and maintain, can quickly find the fuse with the burnt-out fuse, and the replacement speed of the fuse is relatively fast. However, it is found in the actual use that the replacement operation of the fuse body and the outer edge sleeve is relatively difficult, it is not suitable for installation in high altitude, and the actual operation on site is inconvenient.

[0010] The invention patent with the authorization announcement date of 2024.11.26 and the authorization announcement number of CN115483078B discloses an environmentally friendly epoxy resin closed high-pressure injection type fuse, which comprises a column insulator body, a connecting sheet is symmetrically fixed and installed on the side wall of the column insulator body, two baffle covers are arranged on the right side of the column insulator body, T-shaped grooves are formed in the interiors of the two baffle covers, two connecting sheets are respectively slidably arranged in the two T-shaped grooves, first screws are threadedly installed in the interiors of the two baffle covers, internal thread rings are threadedly sleeved on the surfaces of the two first screws, electrode connecting plates are arranged on the ends of the two baffle covers away from each other, the two electrode connecting plates and the two baffle covers are connected through the two first screws and the internal thread rings, a sliding cylinder is slid upward in the annular groove, and then the exhaust groove is exposed outside, thereby forming bidirectional exhaust to reduce the pressure of the exhaust groove and prevent the exhaust groove from being damaged due to explosion during breaking of a large fault current, and the use effect of the equipment is improved. The technical scheme installs the insulator body through bolts, connecting sheets and other structures, but since the insulator body is generally installed in the air, the overall operation difficulty is increased, especially the small bolts and nuts are used to fix the insulator body, and the operation is inconvenient. SUMMARY

[0011] The outdoor closed injection fuse is characterized in that: the fuse body is connected to the fixed plate through two groups of plug-in connection assemblies; the connection and reinforcement assembly is arranged on the side of the fixed plate away from the fuse body, so that only the rotating plate needs to be operated through the pull rod during the installation and disassembly process, the fuse body can be stably installed on the fixed plate through the cooperation of the rotating plate and the pressing block, the connection and reinforcement assembly provides guarantee for the overall structural fastening, and the installation is quick and convenient.

[0012] The outdoor closed injection fuse comprises a fuse body, a fixed plate, two groups of plug-in connection assemblies and one group of connection and reinforcement assemblies.

[0013] One group of the plug-in connection assemblies is connected to the upper end and the lower end of the fuse body, the fuse body is connected to the fixed plate through the two groups of the plug-in connection assemblies, and the connection and reinforcement assembly is arranged on the side of the fixed plate away from the fuse body and used for reinforcing the connection between the two groups of the plug-in connection assemblies.

[0014] The fuse body is connected to the fixed plate through two groups of plug-in connection assemblies; the connection and reinforcement assembly is arranged on the side of the fixed plate away from the fuse body, so that only the rotating plate needs to be operated through the pull rod during the installation and disassembly process, the fuse body can be stably installed on the fixed plate through the cooperation of the rotating plate and the pressing block, and the connection and reinforcement assembly provides guarantee for the overall structural fastening.

[0015] Preferably, the plug-in connection assembly comprises a plug rod, a through slot is formed on the fixing plate, one end of the plug rod is connected to the fuse body, and the other end penetrates through the through slot.

[0016] One end of the plug rod penetrating through the fixing plate is provided with a clamping groove, and notches are formed on both sides of the clamping groove.

[0017] Preferably, the plug-in connection assembly further comprises a supporting rod and a rotating plate; a hinged seat is connected to the side wall of the plug rod, one end of the supporting rod is rotatably connected to the hinged seat, and the other end of the supporting rod is movably connected to the rotating plate through a hinge;

[0018] The rotating plate is provided with a clamping pin assembly clamped with the notch on both sides.

[0019] Preferably, the clamping pin assembly comprises two clamping strips, and the rotating plate is provided with a placing groove on both sides, the clamping strips are arranged in the placing grooves, a second spring is arranged between the inside of the clamping strip and the bottom of the placing groove, and the end of the clamping strip protruding out of the placing groove is provided with an inclined surface.

[0020] Preferably, it further comprises a pull rod, the rotating plate is provided with a mounting groove inside, the mounting groove is provided with a sliding plate inside, and a first spring is arranged between the upper end surface of the sliding plate and the top of the sliding groove;

[0021] Both ends of the pull rod penetrate through the rotating plate and are connected to the upper end surface of the sliding plate;

[0022] The lower end surface of the sliding plate is connected to the clamping strip through a traction rope penetrating through the rotating plate.

[0023] Preferably, the connection reinforcing assembly comprises a rotating rod assembly and two groups of clamping plate assemblies; the rotating rod assembly is arranged on the fixing plate, one group of clamping plate assemblies is connected to the two sides of the rotating rod assembly respectively, and the two groups of clamping plate assemblies are used for connecting two rotating plates respectively.

[0024] Preferably, the rotating rod assembly comprises a fixing column connected to the fixing plate, a rotating groove is formed on the outer wall of the fixing column, four slide grooves are equidistantly formed on the lower end of the outer wall, a rotating ring is sleeved on the outer wall of the fixing column, a sliding block is connected to the inner wall of the rotating ring, the sliding block is slidably connected in the slide groove, and one group of clamping plate assemblies is connected to the two sides of the outer side of the rotating ring respectively.

[0025] Preferably, the clamping plate assembly comprises a second connecting plate, one end of the second connecting plate is connected to the rotating ring, the other end is connected to a clamping plate through a connecting shaft, and connecting bolts are connected to both ends of the clamping plate; a second clamping plate groove is formed on the rotating plate, and a threaded hole matched with the connecting bolt is formed on the bottom of the second clamping plate groove.

[0026] Preferably, the upper end of the rotating ring is connected with a connecting rod, and the upper end of the connecting rod is connected with a knob plate.

[0027] Preferably, the upper and lower ends of the two side walls of the fixed plate are respectively connected with a connecting lug plate.

[0028] Compared with the prior art, the outdoor closed type injection fuse has the following beneficial effects:

[0029] The outdoor closed type injection fuse has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0030] The accompanying drawings are included to provide a further understanding of the present application, and are incorporated in and constitute a part of this specification, illustrate embodiments of the present application and serve to explain the present application, and do not limit the present application. In the drawings:

[0031] Figure 1 Fig. 1 is a connection diagram of the outdoor closed type injection fuse of the present application;

[0032] Figure 2 Fig. 2 is a detailed connection diagram of the insertion rod of the present application;

[0033] Figure 3 Fig. 3 is a detailed connection diagram of the clamping strip of the present application;

[0034] Figure 4 Fig. 4 is a mounting sectional view of the pull rod of the present application;

[0035] Figure 5 Fig. 5 is a detailed connection diagram of the traction rope of the present application;

[0036] Figure 6 Fig. 6 is a detailed connection diagram of the hinge of the present application;

[0037] Figure 7 Fig. 7 is a vertical structure diagram of the rotating plate of the present application;

[0038] Figure 8 Fig. 8 is a back structure diagram of the fixed plate of the present application;

[0039] Figure 9 Fig. 9 is an enlarged view of A of Fig. 1; Figure 8

[0040] Figure 10 ​For Figure 8 Enlarged view of B.

[0041] In the figure: 1 is the fuse body; 2 is the support rod; 3 is the pull rod; 4 is the rotating plate; 5 is the connecting lug plate; 6 is the fixed plate; 7 is the insertion rod; 8 is the clamping groove; 9 is the notch; 10 is the pressing block; 11 is the clamping strip; 12 is the inclined surface; 13 is the sliding plate; 14 is the mounting groove; 15 is the traction rope; 16 is the hinge; 17 is the first spring; 18 is the second spring; 19 is the through groove; 20 is the hinged seat; 21 is the fixed column; 22 is the rotating groove; 23 is the sliding groove; 24 is the rotating ring; 25 is the sliding block; 26 is the second connecting plate; 27 is the connecting shaft; 28 is the clamping plate; 29 is the connecting bolt; 30 is the second clamping plate groove; 31 is the threaded hole; 32 is the connecting rod; 33 is the knob plate. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0043] As Figures 1-10 shown, the technical solutions of the present application provide an outdoor closed type injection fuse, which comprises a fuse body 1, a fixed plate 6, two groups of plug-in connection assemblies and one group of connecting reinforcing assemblies; one group of plug-in connection assemblies is connected to each of the upper and lower ends of the fuse body 1, and the fuse body 1 is connected to the fixed plate 6 through the two groups of plug-in connection assemblies; the connecting reinforcing assembly is arranged on the side of the fixed plate 6 away from the fuse body 1, and is used for reinforcing the connection between the two groups of plug-in connection assemblies. One connecting lug plate 5 is connected to each of the upper and lower ends of the two side walls of the fixed plate 6.

[0044] Specifically, the plug-in connection assembly comprises an insertion rod 7, a through groove 19 is formed in the fixed plate 6, one end of the insertion rod 7 is connected to the fuse body 1, and the other end penetrates through the through groove 19; a clamping groove 8 is formed in the end of the insertion rod 7 penetrating through the fixed plate 6, and notches 9 are formed on the two sides of the clamping groove 8.

[0045] Specifically, the plug-in connection assembly further comprises a support rod 2 and a rotating plate 4; a hinged seat 20 is connected to the side wall of the insertion rod 7, the hinged seat 20 is rotationally connected to one end of the support rod 2, and the other end of the support rod 2 is movably connected to the rotating plate 4 through a hinge 16; the rotating plate 4 is provided with clamping pin assemblies for clamping the notches 9 on the two sides.

[0046] Specifically, the clamping pin assembly comprises two clamping strips 11, a placing groove is formed on the two sides of the rotating plate 4, the clamping strips 11 are arranged in the placing grooves, the second springs 18 are arranged between the inner portions of the clamping strips 11 and the bottoms of the placing grooves, and the end of the clamping strip 11 protruding out of the placing groove is provided with an inclined surface 12.

[0047] Specifically, the pull rod 3, the rotating plate 4 is internally provided with a mounting groove 14, the mounting groove 14 is internally provided with a sliding plate 13, the upper end surface of the sliding plate 13 is provided with a first spring 17 between both ends and the top of the sliding groove; both ends of the pull rod 3 penetrate the rotating plate 4 and are connected to both ends of the upper end surface of the sliding plate 13; the lower end surface of the sliding plate 13 is connected to the clamping strip 11 through the traction rope 15 penetrating the rotating plate 4.

[0048] Specifically, in actual operation, the fixed plate 6 is pre-installed to the specified position, and then the insertion rod 7 on the fuse body 1 is preliminarily fixed by penetrating the through slot 19; the outer side surface of the insertion rod 7 is fixedly provided with a hinged seat 20, and the hinged seat 20 is hingedly provided with a support rod 2, and the end of the support rod 2 away from the fixed plate 6 is hingedly provided with a rotating plate 4, so that the rotating plate 4 can be deflected downward relative to the support rod 2, and the insertion rod 7 is hingedly connected to the fixed plate 6, and the insertion rod 7 is hingedly connected to the fixed plate 6. Figure 1 When the insertion rod 7 penetrates the through slot 19 and the support rod 2 is in a horizontal state, the support rod 2 can fall on the end surface of the fixed plate 6, and as the insertion rod 7 penetrates the through slot 19, the rotating plate 4 can pass the fixed plate 6, so that the rotating plate 4 can be deflected downward relative to the support rod 2 to be in a vertical state and be on one side of the fixed plate 6.

[0049] Specifically, a notch 9 matched with the rotating plate 4 is formed at the end surface of the end of the insertion rod 7 away from the fuse, and when the rotating plate 4 is deflected downward to be in a vertical state, the rotating rod can be in the notch 9, and a plurality of clamping grooves 8 are formed in the inner side walls of the notch 9, and the plurality of clamping grooves 8 are linearly arranged, and a clamping strip 11 matched with the clamping groove 8 is elastically connected to the two side surfaces of the rotating plate 4, and the side surface of the clamping strip 11 located outside the rotating plate 4 is provided with an inclined surface 12, and in the process of the rotating plate 4 being deflected downward to be in a vertical state, the rotating plate 4 can be in the notch 9, and the clamping strip 11 will be matched with the clamping groove 8, and since the clamping strip 11 is provided with the inclined surface 12, the clamping strip 11 can only move towards the fixed plate 6 relative to the notch 9, and through this structure, when the rotating plate 4 is locked with the fixed plate 6 through the cooperation of the clamping groove 8 and the clamping strip 11, the fuse body 1 is stably installed on the fixed plate 6.

[0050] Specifically, the pull rod 3 is fixedly arranged at the outer side of the rotating plate 4, the pull rod 3 is in a U-shaped structure, so that the bottom end of the pull rod 3 is inserted into the rotating plate 4 and is in sliding fit with the rotating plate 4, the bottom end of the pull rod 3 is fixedly arranged with a sliding plate 13, the sliding plate 13 is elastically connected between the rotating plate 4, the traction rope 15 is fixedly arranged between the end face of the one end of the rotating plate 4 and the bottom face of the sliding plate 13, the traction rope 15 passes through the rotating plate 4 and is in sliding fit with the rotating plate 4, through the structure, when the staff needs to dismount the fuse body 1, only needs to pull the pull rod 3 outward, in the process of pulling the pull rod 3, the sliding plate 13 can pull the traction rope 15, and then pulls the clamping strip 11 through the traction rope 15, so that the clamping strip 11 is separated from the clamping groove 8, then, in the process of continuously pulling the pull rod 3, the rotating plate 4 can be deflected upward and be in a horizontal state, thereby facilitating the dismounting of the fuse body 1 from the fixed plate 6.

[0051] Specifically, the pressing block 10 is fixedly arranged at the bottom face of the rotating plate 4, the pressing block 10 can be of rubber material, and the pressing block 10 is located near the intersection of the rotating plate 4 and the supporting rod 2, through the structure, when the rotating plate 4 is deflected downward and is in a vertical state, the pressing block 10 can be pressed between the rotating plate 4 and the fixed plate 6, at this time, through the pressure force of the pressing block 10, the rotating plate 4 and the fixed plate 6 can be stably matched.

[0052] Specifically, when installing, the fixed plate 6 is installed to the pre-planned position, the insertion rod 7 on the fuse body 1 passes through the through slot 19 on the fixed plate 6, so that the rotating plate 4 can pass the fixed plate 6 and be deflected downward, in the process of deflecting the rotating plate 4 downward and being in a vertical state, the clamping strip 11 can be matched with the clamping groove 8, specifically, when the clamping strip 11 is inserted into the clamping groove 8, the rotating plate 4 can only be deflected to the direction close to the fixed plate 6, therefore, when the rotating plate 4 is deflected downward and is in a vertical state, the rotating plate 4 can be kept stable relative to the fixed plate 6, and the pressing block 10 is pressed between the fixed plate 6 and the rotating plate 4, through the elastic force of the pressing block 10, the stable connection between the rotating plate 4 and the fixed plate 6 can be kept;

[0053] When the fuse body 1 needs to be dismounted, the staff can pull the pull rod 3 outward, so as to make the sliding plate 13 pull the traction rope 15, so that the clamping strip 11 can be moved out of the clamping groove 8, so that the rotating plate 4 can be freely rotated relative to the slot 9, therefore, through the pull rod 3, the rotating plate 4 can be pulled to be in a horizontal state, at this time, the fuse body 1 can be moved away from the fixed plate 6, thereby facilitating the dismounting of the fuse body 1, through this way, only the rotating plate 4 needs to be operated through the pull rod 3 in the process of installation and dismounting, which is more convenient and fast, and through the cooperation of the rotating plate 4 and the pressing block 10, the fuse body 1 can be stably installed on the fixed plate 6.

[0054] The hinge seat 20 is arranged on the top surface of the supporting rod 2, and when the rotating plate 4 passes the fixed plate 6, the hinge seat 20 can be attached to the fixed plate 6, so that the rotating plate 4 is deflected downward and is clamped in the notch 9, and the cooperation between the rotating plate 4 and the hinge seat 20 can further keep the fuse body 1 stable.

[0055] The connecting lug 5 is arranged on both sides of the fixed plate 6, which is beneficial to the installation of the fixed plate 6.

[0056] The bottom surface of the pressing block 10 is arranged as an arc surface, the rotating plate 4 is provided with a strip-shaped slot for sliding cooperation with the clamping strip 11, and the second spring 18 is arranged between the inner end surface of the strip-shaped slot and the clamping strip 11. Figure 6 As shown, the rotating plate 4 is provided with a sliding slot for sliding cooperation with the sliding plate 13, the sliding slot is in a U-shaped structure, the first spring 17 is sleeved on the end portion of the pull rod 3, and the first spring 17 is located between the sliding plate 13 and the top end surface of the mounting slot 14, so that the elastic connection between the sliding plate 13 and the rotating plate 4 can be realized.

[0057] In actual use, the recess for installing the hinge 16 can be arranged on the bottom surface of the supporting rod 2 and the rotating plate 4, and the recess is arranged on the bottom of the rotating plate 4 or the supporting rod 2, and in actual use, the hinge can be used to connect the supporting rod 2 and the rotating plate 4.

[0058] The pull rod is pulled outward, so that the sliding plate pulls the traction rope, the clamping strip is moved out of the clamping slot, and the rotating plate can be freely rotated relative to the notch, so that the rotating plate can be pulled to be horizontal by the pull rod, and then the fuse body can be moved away from the fixed plate, which is beneficial to the high-altitude operation of the fuse body, and the installation and disassembly process only needs to operate the rotating plate by the pull rod, which is more convenient and fast, and the cooperation between the rotating plate and the pressing block can keep the fuse body stably installed on the fixed plate.

[0059] The connecting reinforcing assembly comprises a rotating rod assembly and two sets of clamping plate assemblies; the rotating rod assembly is arranged on the fixed plate 6, and the two sides of the rotating rod assembly are connected with one set of clamping plate assemblies respectively, and the two sets of clamping plate assemblies are used for connecting the two rotating plates 4 respectively. The rotating rod assembly comprises a fixed column 21 connected with the fixed plate 6, a rotating groove 22 is arranged at the upper end of the outer wall of the fixed column 21, and four slide grooves 23 are equidistantly arranged at the lower end of the outer wall; a rotating ring 24 is arranged on the outer wall of the fixed column 21, a sliding block 25 is connected with the inner wall of the rotating ring 24, the sliding block 25 is slidingly connected in the slide groove 23, and one set of clamping plate assemblies is connected with the two sides of the outer side of the rotating ring 24. The upper end of the rotating ring 24 is connected with a connecting rod 32, and the upper end of the connecting rod 32 is connected with a knob plate 33. The clamping plate assembly comprises a second connecting plate 26, one end of the second connecting plate 26 is connected with the rotating ring 24, the other end is connected with a clamping plate 28 through a connecting shaft 27, and the two ends of the clamping plate 28 are connected with connecting bolts 29; a second clamping plate groove 30 is arranged on the rotating plate 4, and a threaded hole 31 matched with the connecting bolt 29 is arranged at the bottom of the second clamping plate groove 30.

[0060] When the two rotating plates 4 are folded on the back of the fixed plate 6, the rotating ring 24 is rotated through the knob plate 33 to drive the two second connecting plates 26 to rotate, so that the two clamping plates 28 are rotated above the rotating plate 4, then the rotating ring 24 is slid to below the slide groove 23 through the sliding block 25, so that the clamping plate 28 is located in the second clamping plate groove 30, and then the connecting bolt 29 is tightened into the threaded hole 31, so that the clamping plate 28 is tightly connected with the second clamping plate groove 30; the loosening of the two rotating plates 4 is limited, and the overall structure is tightly connected.

[0061] When disassembling, the connecting bolt 29 is loosened, the rotating ring 24 is pulled upward along the slide groove 23 through the knob plate 33, when the rotating ring 24 is slid into the rotating groove 22, the rotating ring 24 is rotated, so that the second connecting plate 26 and the clamping plate 28 are away from above the rotating plate 4, so that the rotating plate 4 is not limited when being opened.

[0062] The outdoor closed type injection fuse, a set of plug-in connection assemblies is arranged at the upper end and the lower end of the fuse body 1 respectively, the fuse body 1 is connected with the fixed plate 6 through the two sets of plug-in connection assemblies; the connecting reinforcing assembly is arranged on the side of the fixed plate 6 away from the fuse body 1, and is used for reinforcing the connection between the two sets of plug-in connection assemblies. In this way, only the rotating plate needs to be operated through the pull rod during the installation and disassembly process, which is more convenient and faster, and is more suitable for high-altitude operation; and the cooperation of the rotating plate and the pressing block enables the fuse body to be stably installed on the fixed plate; the connecting reinforcing assembly provides protection for the overall structure.

[0063] Finally, it should be noted that the above are only preferred embodiments of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art will still be able to modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

[0064] The technical solutions of the present application can be widely used in the design and manufacture of outdoor closed injection fuses.

Claims

1. An outdoor enclosed injection-molded fuse characterized in that: The fuse body is connected with the fixing plate through two sets of plug-in connecting assemblies, and a connecting reinforcing assembly is arranged on the side of the fixing plate away from the fuse body, so that only the rotating plate needs to be operated through the pull rod in the mounting and dismounting process, and the plug-in connecting assembly is more suitable for high-altitude operation. The fuse body is connected with the fixing plate through two sets of plug-in connecting assemblies, and a connecting reinforcing assembly is arranged on the side of the fixing plate away from the fuse body, so that only the rotating plate needs to be operated through the pull rod in the mounting and dismounting process, and the plug-in connecting assembly is more suitable for high-altitude operation.

2. The outdoor enclosed jet molten link fuse of claim 1, wherein, The plug-in connecting assembly comprises a plug rod (7), a through slot (19) is formed in the fixing plate (6), one end of the plug rod (7) is connected with the fuse body (1), and the other end penetrates through the through slot (19). One end of the plug rod (7) penetrating through the fixing plate (6) is provided with a clamping groove (8), and notches (9) are formed on the two sides of the clamping groove (8).

3. The outdoor enclosed-type injection-molded fuse of claim 2, wherein, The plug-in connecting assembly further comprises a supporting rod (2) and a rotating plate (4); a hinged seat (20) is connected to the side wall of the plug rod (7), one end of the hinged seat (20) is rotationally connected with the supporting rod (2), and the other end of the supporting rod (2) is movably connected with the rotating plate (4) through a hinge (16). The rotating plate (4) is provided with a clamping pin assembly clamped with the notch (9) on the two sides.

4. The outdoor enclosed-type injection-molded fuse of claim 3, wherein The clamping pin assembly comprises two clamping strips (11), the two sides of the rotating plate (4) are provided with a placing groove, the clamping strip (11) is arranged in the placing groove, a second spring (18) is arranged between the inside of the clamping strip (11) and the bottom of the placing groove, and the end of the clamping strip (11) protruding out of the placing groove is provided with an inclined surface (12).

5. The outdoor enclosed-type injection-molded fuse of claim 4, wherein A pull rod (3) is further arranged, an installation groove (14) is arranged in the rotating plate (4), a sliding plate (13) is arranged in the installation groove (14), and a first spring (17) is arranged between the upper end surfaces of the sliding plate (13) and the top of the sliding groove. The two ends of the pull rod (3) penetrate through the rotating plate (4) and are connected to the upper end surfaces of the sliding plate (13). The lower end surface of the sliding plate (13) is connected to the clamping strip (11) through a traction rope (15) penetrating through the rotating plate (4).

6. The outdoor enclosed-type injection-molded fuse of claim 3, wherein The connecting reinforcing assembly comprises a rotating rod assembly and two sets of clamping plate assemblies; the rotating rod assembly is arranged on the fixing plate (6), the two sides of the rotating rod assembly are respectively connected with one set of the clamping plate assemblies, and the two sets of clamping plate assemblies are respectively used for connecting two rotating plates (4).

7. The outdoor enclosed-type injection-molded fuse of claim 6, wherein The rotating rod assembly comprises a fixed column (21) connected to the fixed plate (6), a rotating groove (22) is formed at the upper end of the outer wall of the fixed column (21), and four slide grooves (23) are equidistantly formed at the lower end of the outer wall; a rotating ring (24) is sleeved on the outer wall of the fixed column (21), a sliding block (25) is connected to the inner wall of the rotating ring (24), the sliding block (25) is slidingly connected in the slide groove (23), and a group of the clamping plate assemblies are respectively connected to the two sides of the outer side of the rotating ring (24).

8. The outdoor enclosed-type injection-molded fuse of claim 7, wherein The clamping plate assembly comprises a second connecting plate (26), one end of the second connecting plate (26) is connected to the rotating ring (24), the other end is connected to a clamping plate (28) through a connecting shaft (27), and connecting bolts (29) are connected to the two ends of the clamping plate (28); a second clamping plate groove (30) is formed in the rotating plate (4), and a threaded hole (31) matched with the connecting bolt (29) is formed in the bottom of the second clamping plate groove (30).

9. The outdoor enclosed-type injection-molded fuse of claim 7, wherein The upper end of the rotating ring (24) is connected to a connecting rod (32), and the upper end of the connecting rod (32) is connected to a knob plate (33).

10. The outdoor enclosed jet molten link fuse of claim 1, wherein, One connecting lug plate (5) is connected to the upper end and the lower end of each side wall of the fixed plate (6).

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