CN215933523U

CN215933523U - Current-limiting fuse for electrified railway transformer cabinet

Info

Publication number: CN215933523U
Application number: CN202122512904.0U
Authority: CN
Inventors: 李青国
Original assignee: Shaoxing Keye Electric Appliance Co ltd
Current assignee: Shaoxing Keye Electric Appliance Co ltd
Priority date: 2021-10-19
Filing date: 2021-10-19
Publication date: 2022-03-01
Anticipated expiration: 2031-10-19

Abstract

The utility model relates to the technical field of current-limiting fuses, and discloses a current-limiting fuse for an electrified railway transformer cabinet, which comprises a mounting seat, wherein the top of the mounting seat is fixedly connected with two insulating columns, the top of each insulating column is fixedly connected with a U-shaped block, the bottom wall of an inner cavity of each U-shaped block is fixedly connected with a U-shaped elastic sheet, the inner sides of the two U-shaped elastic sheets are movably connected with a fuse tube body, one side of each U-shaped block is fixedly connected with a wiring board, and the top of the wiring board is provided with a first limiting piece which is in contact with the outer surface of the fuse tube body. This current-limiting fuse for electrified railway potential transformer cabinet possesses advantages such as convenient to use, has solved prior art for the current-limiting fuse of electrified railway potential transformer cabinet includes mount pad and current-limiting fuse body, and the mount pad is through the jump ring above that with the location of current-limiting fuse body, and the location effect of jump ring is poor, and current-limiting fuse body misplaces easily and drops, leads to the problem of not being convenient for to use.

Description

Current-limiting fuse for electrified railway transformer cabinet

Technical Field

The utility model relates to the technical field of current-limiting fuses, in particular to a current-limiting fuse for an electrified railway transformer cabinet.

Background

The current-limiting fuse is a closed fuse which can limit short-circuit current and can quickly cut off fault current, and its structure is characterized by that the fuse body is placed in a closed porcelain tube full of quartz sand, and also adopts series-connected additional current-limiting resistor to limit short-circuit current and reduce overvoltage resulted from current cut-off, and on the transformer cabinet of electric railway a current-limiting fuse is usually mounted for protecting circuit.

In the prior art, the current-limiting fuse for the electrified railway transformer cabinet comprises a mounting seat and a current-limiting fuse body, the current-limiting fuse body is positioned by a clamp spring on the mounting seat, the positioning effect of the clamp spring is poor, and the current-limiting fuse body is easy to misplace and fall, so that the current-limiting fuse is inconvenient to use, and the problem is solved by the current-limiting fuse for the electrified railway transformer cabinet.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides a current-limiting fuse for an electrified railway transformer cabinet, which has the advantages of convenience in use and the like, and solves the problems that in the prior art, the current-limiting fuse for the electrified railway transformer cabinet comprises a mounting seat and a current-limiting fuse tube body, the mounting seat positions the current-limiting fuse tube body through a clamp spring on the mounting seat, the clamp spring is poor in positioning effect, and the current-limiting fuse tube body is easy to misplace and drop, so that the current-limiting fuse is inconvenient to use.

(II) technical scheme

The technical scheme for solving the technical problems is as follows: the utility model provides a current limiting fuse for electrified railway potential transformer cabinet, includes the mount pad, the top fixedly connected with quantity of mount pad is two insulating columns, the top fixedly connected with U-shaped piece of insulating column, the inner chamber diapire fixedly connected with U-shaped shell fragment of U-shaped piece, two the inboard of U-shaped shell fragment all with fuse body swing joint, one side fixedly connected with wiring board of U-shaped piece, the top of wiring board be provided with fuse body surface contact's first locating part, be provided with the second locating part with fuse body surface contact on the U-shaped piece, be provided with the setting element with the positive contact of second locating part on the U-shaped piece.

The utility model has the beneficial effects that:

this current-limiting fuse for electrified railway potential transformer cabinet through setting element and the cooperation of second locating part for the second locating part rotates around the U-shaped piece, through the cooperation of first locating part and U-shaped shell fragment, goes into the inboard of U-shaped shell fragment with fuse body card, resets second locating part and setting element, and the second locating part is avoided the fuse body to break away from the U-shaped shell fragment from the upside, and first locating part avoids the fuse body to break away from the U-shaped shell fragment from the left and right sides, thereby reaches convenient to use's purpose.

On the basis of the technical scheme, the utility model can be further improved as follows.

Furthermore, U-shaped piece and wiring board all are bilateral symmetry and distribute, be provided with the line ball bolt on the wiring board.

Adopt above-mentioned further scheme's beneficial effect be, the line ball bolt is used for the location to connect the conductor wire.

Further, first locating part is including the L shaped plate that is located wiring board top and one end and extends to the fuse body outside, the L shaped plate is articulated with the wiring board through the spring hinge, the inboard fixedly connected with of L shaped plate and the kicking block of fuse body end face contact.

The beneficial effect who adopts above-mentioned further scheme is that, through stirring the L shaped plate, cooperation spring hinge, the L shaped plate rotates, with the ejecting U-shaped shell fragment of fuse body, is convenient for tear fuse body open.

Further, the second locating part includes rotates with the U-shaped piece top and is connected and extend to the positive arc piece of U-shaped piece, the inboard fixedly connected with of arc piece and the briquetting of the contact of the fuse body outside, the bar hole has been seted up in the front of arc piece.

Adopt above-mentioned further scheme's beneficial effect be, arc piece and briquetting cooperation carry on spacingly to the fuse body.

Furthermore, the top block and the pressing block are elastic blocks, and the bottom of the strip-shaped hole is open;

further, the positioning piece comprises a short shaft movably connected with the front face of the U-shaped block, the front face of the short shaft is movably connected with a transverse block which is in front contact with the front face of the arc-shaped block, and the width of the transverse block is equal to the groove width of the strip-shaped hole.

Adopt above-mentioned further scheme's beneficial effect to be, rotate the crosspiece, make the crosspiece rotate and keep vertical after ninety degrees, upwards rotate the arc piece for the crosspiece passes the bar hole on the arc piece relatively, and the arc piece drives the briquetting and removes, and the briquetting breaks away from the contact with the fuse body.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of the structure of the present invention;

FIG. 3 is a front sectional view of a U-shaped block of the present invention;

FIG. 4 is a side cross-sectional view of a U-shaped block of the present invention.

In the figure: 1. a mounting seat; 2. an insulating column; 3. a U-shaped block; 4. a U-shaped spring plate; 5. a fuse tube body; 6. a wiring board; 7. a first limit piece; 71. a spring hinge; 72. an L-shaped plate; 73. a top block; 8. a second limiting member; 81. an arc-shaped block; 82. briquetting; 83. a strip-shaped hole; 9. a positioning member; 91. a minor axis; 92. and (5) transverse blocks.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the embodiment, as shown in fig. 1-4, a current-limiting fuse for an electrified railway transformer cabinet comprises a mounting base 1, wherein the top of the mounting base 1 is fixedly connected with two insulating columns 2, the top of each insulating column 2 is fixedly connected with a U-shaped block 3, the bottom wall of an inner cavity of each U-shaped block 3 is fixedly connected with a U-shaped elastic sheet 4, the inner sides of the two U-shaped elastic sheets 4 are movably connected with a fuse tube body 5, one side of each U-shaped block 3 is fixedly connected with a wiring board 6, the top of each wiring board 6 is provided with a first limiting part 7 in contact with the outer surface of the fuse tube body 5, the U-shaped blocks 3 are provided with second limiting parts 8 in contact with the outer surface of the fuse tube body 5, the U-shaped blocks 3 are provided with positioning parts 9 in front contact with the second limiting parts 8, the U-shaped blocks 3 and the wiring boards 6 are symmetrically distributed in a left-right mode, the wiring boards 6 are provided with pressing line bolts, and the pressing line bolts are used for positioning and connecting conductive lines, the first limiting part 7 comprises an L-shaped plate 72 which is positioned at the top of the wiring board 6 and one end of which extends to the outer side of the fuse tube body 5, the L-shaped plate 72 is hinged with the wiring board 6 through a spring hinge 71, the inner side of the L-shaped plate 72 is fixedly connected with a top block 73 which is in contact with the end face of the fuse tube body 5, the L-shaped plate 72 is matched with the spring hinge 71 by stirring the L-shaped plate 72, the fuse tube body 5 is pushed out of a U-shaped elastic sheet 4 by the rotation of the L-shaped plate 72, the fuse tube body 5 is convenient to detach, the second limiting part 8 comprises an arc block 81 which is rotatably connected with the top of the U-shaped block 3 and extends to the front of the U-shaped block 3, the inner side of the arc block 81 is fixedly connected with a pressing block 82 which is in contact with the outer side of the fuse tube body 5, the front of the arc block 81 is provided with a strip-shaped hole 83, the arc block 81 is matched with the pressing block 82, the fuse tube body 5 is limited, the top block 73 and the pressing block 82 are elastic blocks, the bottom of the strip-shaped hole 83 is open, the setting element 9 includes the minor axis 91 with the positive swing joint of U-shaped piece 3, the positive swing joint of minor axis 91 has the horizontal piece 92 with the positive contact of arc piece 81, the width of horizontal piece 92 and the groove width of bar hole 83 equal, rotate horizontal piece 92, make horizontal piece 92 rotate and keep vertical after ninety degrees, upwards rotate arc piece 81 for horizontal piece 92 passes the bar hole 83 on the arc piece 81 relatively, arc piece 81 drives briquetting 82 and removes, briquetting 82 and fuse body 5 break away from the contact.

The working principle is as follows:

the first step is as follows: the transverse block 92 is rotated to enable the transverse block 92 to keep vertical after rotating ninety degrees, the arc block 81 is rotated upwards, the transverse block 92 relatively penetrates through the strip-shaped hole 83 in the arc block 81, the arc block 81 drives the pressing block 82 to move, and the pressing block 82 is separated from the contact with the fuse tube body 5;

the second step is that: the L-shaped plate 72 is pulled, the L-shaped plate 72 rotates in cooperation with the spring hinge 71, the fuse tube body 5 is ejected out of the U-shaped elastic sheet 4, and the L-shaped plate 72 is reset after the fuse tube body 5 to be used is pressed into the inner side of the U-shaped elastic sheet 4;

the third step: reset arc piece 81 and horizontal piece 92 in proper order, horizontal piece 92 and minor axis 91 cooperation are fixed a position arc piece 81, and briquetting 82 on the arc piece 81 avoids fuse body 5 to break away from U-shaped shell fragment 4 from the upside, and kicking block 73 on the L-shaped plate 72 avoids fuse body 5 to break away from U-shaped shell fragment 4 from the left and right sides to reach convenient to use's purpose.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a current limiting fuse for electrified railway potential transformer cabinet, includes mount pad (1), its characterized in that: the utility model discloses a fuse protector, including mount pad (1), the top fixedly connected with quantity of mount pad (1) is two insulating column (2), the top fixedly connected with U-shaped piece (3) of insulating column (2), the inner chamber diapire fixedly connected with U-shaped shell fragment (4) of U-shaped piece (3), two the inboard of U-shaped shell fragment (4) all with fuse body (5) swing joint, one side fixedly connected with wiring board (6) of U-shaped piece (3), the top of wiring board (6) is provided with first locating part (7) with fuse body (5) surface contact, be provided with second locating part (8) with fuse body (5) surface contact on U-shaped piece (3), be provided with setting element (9) with second locating part (8) frontal contact on U-shaped piece (3).

2. The current-limiting fuse for an electrified railway transformer cabinet as claimed in claim 1, wherein: u-shaped piece (3) and wiring board (6) all are bilateral symmetry and distribute, be provided with the line ball bolt on wiring board (6).

3. The current-limiting fuse for an electrified railway transformer cabinet as claimed in claim 2, wherein: first locating part (7) are including L shaped plate (72) that are located wiring board (6) top and one end and extend to fuse body (5) outside, L shaped plate (72) are articulated through spring hinge (71) and wiring board (6), inboard fixedly connected with of L shaped plate (72) and fuse body (5) end face contact's kicking block (73).

4. The current-limiting fuse for an electrified railway transformer cabinet as claimed in claim 3, wherein: second locating part (8) include rotate with U-shaped piece (3) top and be connected and extend to the positive arc piece (81) of U-shaped piece (3), briquetting (82) of the inboard fixedly connected with of arc piece (81) and fuse body (5) outside contact, bar hole (83) have been seted up in the front of arc piece (81).

5. The current-limiting fuse for an electrified railway transformer cabinet as claimed in claim 4, wherein: the top block (73) and the pressing block (82) are both elastic blocks, and the bottom of the strip-shaped hole (83) is open.

6. The current-limiting fuse for an electrified railway transformer cabinet as claimed in claim 5, wherein: the positioning piece (9) comprises a short shaft (91) movably connected with the front side of the U-shaped block (3), the front side of the short shaft (91) is movably connected with a transverse block (92) which is in contact with the front side of the arc-shaped block (81), and the width of the transverse block (92) is equal to the groove width of the strip-shaped hole (83).