CN211654541U

CN211654541U - Mining transformer binding post

Info

Publication number: CN211654541U
Application number: CN202020597849.2U
Authority: CN
Inventors: 王翠荣; 葛乃中; 范为超
Original assignee: Yancheng Weida Transformer Manufacturing Co ltd
Current assignee: Yancheng Weida Transformer Manufacturing Co ltd
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2020-10-09
Anticipated expiration: 2030-04-21

Abstract

The utility model relates to a mining transformer connecting terminal, which comprises a porcelain bushing, epoxy resin, an inner copper sleeve, an explosion-proof flange, a first gasket, a second gasket, a nut and a conducting rod; the right end of the porcelain sleeve is provided with a through hole, the conducting rod is transversely inserted into the through hole, the inner copper sleeve is sleeved outside the conducting rod and inserted into the through hole, epoxy resin is filled inside the right end of the through hole and covers the outer parts of the inner copper sleeve and the conducting rod, and the explosion-proof flange sleeve is screwed outside the left end of the porcelain sleeve; the utility model adopts the inner copper sleeve to cover the conducting rod, and adopts the epoxy resin to cover the outer part of the inner copper sleeve, thereby greatly increasing the strength and improving the explosion-proof performance; and the metal wire part of the stranded cable is tightly pressed between the first gasket and the second gasket, so that the connection is firm and not loosened, and the phenomenon of arc discharge caused by loosening of the wiring terminal is avoided, thereby prolonging the service life.

Description

Mining transformer binding post

Technical Field

The utility model relates to a mining transformer binding post.

Background

The mining transformer is a movable complete set of power supply and transformation device, and is used for mine areas with explosion hazards such as methane mixed gas and coal dust, the high-low voltage side of the mining transformer needs to be connected with a power circuit by virtue of a wiring terminal, the existing mining transformer is weak in structural strength and poor in explosion-proof performance, the wiring terminal mostly adopts a single gasket to compress metal wire parts of multiple cables, the metal wire parts are easy to loosen, the wiring terminal is prone to poor contact, and then an arc discharge phenomenon is caused, so that the wiring terminal is heated and burnt, the service life is short, and further improvement is needed.

SUMMERY OF THE UTILITY MODEL

To the current situation of above-mentioned prior art, the utility model aims to solve the technical problem that an increase intensity by a wide margin in order to improve explosion-proof performance, and firm in connection is not become flexible in order to avoid the emergence of arc phenomenon to service life's mining transformer binding post has been prolonged.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a mining transformer wiring terminal is characterized by comprising a porcelain bushing, epoxy resin, an inner copper sleeve, an explosion-proof flange, a first gasket, a second gasket, a nut and a conducting rod; the utility model discloses a lead-acid battery, including porcelain bushing, conducting rod, explosion-proof flange cover, copper sleeve, lead-acid battery, lead.

Preferably, two first positioning pieces which are diagonally arranged with each other are formed at the edge of the first gasket rightwards, two second positioning pieces which are diagonally arranged with each other are formed at the edge of the second gasket leftwards, and the two second positioning pieces and the two first positioning pieces are distributed at intervals.

Preferably, a small diameter part is formed in the middle of the conducting rod, and the inner copper sleeve is sleeved outside the small diameter part.

Preferably, the middle part of the conducting rod is also outwards formed with a check ring distributed in the circumferential direction, and the check ring is attached to the left end of the epoxy resin.

Compared with the prior art, the utility model has the advantages of: the utility model adopts the inner copper sleeve to cover the conducting rod, and adopts the epoxy resin to cover the outer part of the inner copper sleeve, thereby greatly increasing the strength and improving the explosion-proof performance; and the metal wire part of the stranded cable is tightly pressed between the first gasket and the second gasket, so that the connection is firm and not loosened, and the phenomenon of arc discharge caused by loosening of the wiring terminal is avoided, thereby prolonging the service life.

Drawings

FIG. 1 is a front view of a half-section structure of the present invention;

fig. 2 is a matching structure diagram of the first gasket and the second gasket of the present invention.

Detailed Description

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

To maintain the following description of the embodiments of the present invention clear and concise, detailed descriptions of well-known functions and components may be omitted.

As shown in fig. 1-2, a mining transformer wiring terminal comprises a porcelain bushing 1, epoxy resin 2, an inner copper bush 3, an explosion-proof flange 4, a first gasket 5, a second gasket 6, a nut 7 and a conducting rod 8; the right end of the porcelain sleeve 1 is provided with a through hole 11, a conductive rod 8 is transversely inserted and arranged in the through hole 11, an inner copper sleeve 3 is sleeved outside the conductive rod 8 and is inserted into the through hole 11, epoxy resin 2 is filled inside the right end of the through hole 11 and covers the inner copper sleeve 3 and the conductive rod 8, an explosion-proof flange 4 is sleeved outside the left end of the porcelain sleeve 1 in a screwed mode, the left end of the conductive rod 8 is arranged inside the left end of the through hole 11, the right end of the conductive rod 8 extends out of the right end of the porcelain sleeve 1, a first gasket 5 is sleeved outside the conductive rod 8 and is attached to the outer side of the right end of the porcelain sleeve 1, a second gasket 6 is sleeved outside the conductive rod 8 and is arranged on the right side of the first gasket 5, and a nut 7 is sleeved outside the right end of the conductive rod 8 and is arranged on; two first positioning sheets 51 which are diagonally arranged with each other are formed rightwards on the edge of the first gasket 5, two second positioning sheets 61 which are diagonally arranged with each other are formed leftwards on the edge of the second gasket 6, and the two second positioning sheets 61 and the two first positioning sheets 51 are distributed at intervals; a small-diameter part 82 is formed in the middle of the conducting rod 8, the inner copper sleeve 3 is sleeved outside the small-diameter part 82, a retaining ring 81 distributed in the circumferential direction is formed in the middle of the conducting rod 8 outwards, and the retaining ring 81 is attached to the left end of the epoxy resin 2.

When the device is used, one end of a cable 9 is inserted into the left end of the porcelain sleeve 1 and connected with the left end of the conducting rod 8, the metal wire part of the multi-strand cable is hinged and wound on the conducting rod 8 and located between the first gasket 5 and the second gasket 6, then the nut 7 is slowly screwed to push the second gasket 6 leftwards until the metal wire part of the multi-strand cable is pressed by the first gasket 5 and the second gasket 6 to complete wiring, the two second positioning sheets 61 are respectively located on the outer sides of the first gasket 5, the two first positioning sheets 51 are respectively located on the outer sides of the second gasket 6, the two first positioning sheets 51 and the two second positioning sheets 61 are mutually spaced and mutually matched for limitation, and further the first gasket 5 and the second gasket 6 are prevented from relatively rotating, so that the metal wire part of the multi-strand cable is effectively pressed for a long time; the explosion-proof flange 4 is used for tightly sleeving the porcelain sleeve 1 and is fixed in a special screw hole.

The utility model adopts the inner copper sleeve 3 to cover the conducting rod 8, and simultaneously adopts the epoxy resin 2 to cover the outer part of the inner copper sleeve 3, thereby greatly increasing the strength and improving the explosion-proof performance; and the metal wire part of the stranded cable is tightly pressed between the first gasket 5 and the second gasket 6, so that the connection is firm and not loosened, and the phenomenon of arc discharge caused by loosening of the wiring terminal is avoided, thereby prolonging the service life.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in the embodiments and modifications thereof may be made, and equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A mining transformer wiring terminal is characterized by comprising a porcelain bushing, epoxy resin, an inner copper sleeve, an explosion-proof flange, a first gasket, a second gasket, a nut and a conducting rod; the utility model discloses a lead-acid battery, including porcelain bushing, conducting rod, explosion-proof flange cover, copper sleeve, lead-acid battery, lead.

2. The mining transformer wiring terminal according to claim 1, wherein two first positioning pieces diagonally arranged to each other are formed at the right edge of the first gasket, two second positioning pieces diagonally arranged to each other are formed at the left edge of the second gasket, and the two second positioning pieces are spaced apart from the two first positioning pieces.

3. The mining transformer wiring terminal as claimed in claim 2, wherein a small diameter portion is formed in the middle of the conductive rod, and the inner copper sleeve is sleeved outside the small diameter portion.

4. The mining transformer wiring terminal according to claim 3, wherein a retaining ring is formed in the middle of the conductive rod and is distributed in an annular direction, and the retaining ring is attached to the left end of the epoxy resin.