CN111243830B

CN111243830B - Anti-loose type transformer for wiring

Info

Publication number: CN111243830B
Application number: CN202010148887.4A
Authority: CN
Inventors: 谢向来; 桑新科; 朱一鹏
Original assignee: Hangzhou Hangao Electric Power Engineering Design Co ltd
Current assignee: Hangzhou Hangao Electric Power Engineering Design Co ltd
Priority date: 2020-03-05
Filing date: 2020-03-05
Publication date: 2021-01-15
Anticipated expiration: 2040-03-05
Also published as: CN111243830A

Abstract

The invention relates to a wiring looseness prevention type transformer which comprises a transformer body, wherein a wiring structure is arranged on the transformer body and comprises a wiring threaded head and a compression nut in threaded connection with the wiring threaded head, an auxiliary threaded head is arranged at the free end of the wiring threaded head, the diameter of the auxiliary threaded head is smaller than that of the wiring threaded head, the thread direction of the auxiliary threaded head is opposite to that of the wiring threaded head, a stopping nut is in threaded connection with the auxiliary threaded head, a jacking sleeve is sleeved on the wiring nut, and two ends of the jacking sleeve are abutted against the compression nut and the stopping nut in a one-to-one correspondence mode. The invention aims to provide a wiring looseness prevention transformer which is not easy to loosen at a wiring position, and solves the problem that the wiring position of the existing transformer is easy to loosen.

Description

Anti-loose type transformer for wiring

Technical Field

The invention relates to a transformer, in particular to a wiring looseness prevention type transformer.

Background

A transformer is a device that changes an alternating voltage using the principle of electromagnetic induction, and main components are a primary coil, a secondary coil, and an iron core (magnetic core). The main functions are voltage transformation, current transformation, impedance transformation, isolation, voltage stabilization (magnetic saturation transformer) and the like. The transformer can be divided into a power transformer and a special transformer (an electric furnace transformer, a rectification transformer, a power frequency test transformer, a voltage regulator, a mining transformer, an audio transformer, a medium-frequency transformer, a high-frequency transformer, an impact transformer, an instrument transformer, an electronic transformer, a reactor, a mutual inductor and the like) according to the application. The circuit symbol is usually T as the beginning of the number. Set up the connector lug on the transformer and come the introduction and draw forth the power, for opening the wiring hole on the transformer when current transformer carries out the wiring, open the screw thread through-hole on the pore wall in wiring hole, thereby it compresses tightly the realization on the power cord to insert the power cord in the wiring hole, then through the bolt of threaded connection in the screw thread through-hole to realize the fixed to the power cord. The existing wiring mode not only has small number of turns of thread due to thin thickness of the hole wall of the wiring hole, but also has low connection strength at the wiring position due to small number of turns of thread and is easy to loose.

Disclosure of Invention

The invention aims to provide a wiring looseness prevention transformer which is not easy to loosen at a wiring position, and solves the problem that the wiring position of the existing transformer is easy to loosen.

The technical problem is solved by the following technical scheme: the utility model provides a prevent loose dynamic formula transformer of working a telephone switchboard, includes the transformer body, be equipped with wiring structure on the transformer body, its characterized in that, wiring structure includes wiring screw thread head and threaded connection the gland nut on the wiring screw thread head, be equipped with supplementary screw thread head on the free end of wiring screw thread head, the diameter of supplementary screw thread head is less than the diameter of wiring screw thread head, the screw thread direction of supplementary screw thread head is with the screw thread opposite direction of wiring screw thread head, threaded connection has the stopping nut on the supplementary screw thread head, the cover is equipped with the top cover on the gland nut, and the both ends one-to-one ground butt of top cover is in on gland nut and the stopping nut. When the wire connecting device is used, the wire is tightly pressed by the compression nut to be connected. This technical scheme, when gland nut produced not hard up trend formula and rotates and produce the displacement, thereby by top sleeve cooperation stopping nut limit can not the translation so that rotate and can not produce. Even if the compression nut drives the top sleeve to rotate together and then drives the retaining nut to rotate, the rotation in the loosening direction of the compression nut is the rotation in the locking direction of the compression nut, and the compression nut cannot be loosened at the moment. Therefore, only the retaining nut moves towards the direction away from the compression nut and then the compression nut is likely to loosen, so that the anti-loosening effect is good.

Preferably, a jack is arranged on a free end face of the connecting thread head, a through hole aligned with the jack is arranged on the stopping nut, a rotation stopping rod penetrating the through hole is arranged in the jack in a penetrating mode in a pulling mode, and the top sleeve comprises a first section, a second section and an opening retaining mechanism which drives the first section and the second section to be separated and maintains the separated state. During the use, at first rotate the stopping nut and compress tightly on the top cover and make the gland nut not have not become flexible space, if the through-hole is misaligned with the jack this moment, then become flexible stopping nut and align with the jack to the through-hole, then insert in the jack after passing the through-hole with the rotation stopping pole and make the use stop loose nut can not produce the rotation. But when rotating the nut that ends the pine and align through-hole and via hole, can lead to the top cover can not compress tightly on gland nut, also provide the space for gland nut's not hard up promptly, gland nut has not hard up space then can produce not hard up phenomenon, in order to eliminate this space, then make first section and second section part separate and make gland nut still tightly together through the top cover with the nut top that ends the pine through opening retaining mechanism to make gland nut can not become hard up. This technical scheme can enough guarantee that the through-hole aligns with the jack and make the rotation stopping rod can insert and restrict the rotation of ending the pine nut, can make the top cover remain throughout with gland nut and end the tight of pine nut top again.

Preferably, the stretching and retaining mechanism comprises two ejector blocks, a first guide inclined surface, a second guide inclined surface and a pull cable connected to the ejector blocks and capable of being tied to the rotation stopping rod, the ejector blocks are located between the first section and the second section, the first guide inclined surface is arranged between the end surface of one end, facing the second section, of the first section and the inner circumferential surface, the second guide inclined surface is arranged between the end surface of one end, facing the first section, of the second section and the inner circumferential surface of the second section, the first section and the second section are distributed at two radial ends of the first section, one end of each ejector block abuts against the first guide inclined surface, and the other end of each ejector block abuts against the second guide inclined surface. During the use, draw the kicking block outward and drive first section and second section and separate through the cable to make first section and second top tight between gland nut and the nut that ends loose, the cable is on the rotation stopping rod and makes the kicking block can not remove, maintain unchangeable with the position between first section and the second section after the top is tight.

Preferably, the top block and the first guiding inclined surface are matched and abutted together, and the top block and the second guiding inclined surface are matched and abutted together. The abrasion is small.

Preferably, the second section is located between the retaining nut and the ejector block, the second section is provided with a limiting notch communicated with the second guide inclined plane and the outer peripheral surface of the second section, and the inhaul cable penetrates through the limiting notch. The phenomenon that the first section and the second section are bent and butted due to the fact that the top block moves along the circumferential direction of the first section can be prevented. The reliability of the bending butt joint at the jacking is poor.

Preferably, a liquid storage pit is formed in the transformer body, and the wiring threaded head is located in the liquid storage pit.

Preferably, the liquid storage pit is filled with a conductive liquid, and the compression nut is immersed in the conductive liquid. Can avoid the wiring to wear to establish contact failure and strike sparks when using.

Preferably, the side wall of the liquid storage pit is provided with a supporting inclined plane communicated with the bottom wall and the end face of the liquid storage pit, and the lead pressed by the compression nut is provided with an inclined section attached to the supporting inclined plane. The guide is fixed with good reliability.

The invention has the following advantages: the loosening phenomenon can not be generated at the connecting wire.

Drawings

FIG. 1 is a schematic diagram of the present invention.

In the figure: the transformer comprises a transformer body 1, a wiring threaded head 11, a compression nut 12, a liquid storage pit 13, a supporting inclined surface 14, an auxiliary threaded head 15, a stopping nut 16, a through hole 17, a top sleeve 18, a first section 19, a second section 20, an opening retaining mechanism 21, a top block 22, a first guide inclined surface 23, a second guide inclined surface 24, a guy cable 25, a limiting notch 26, a lead 27, an inclined section 28, a rotation stopping rod 29 and a jack 30.

Detailed Description

The invention is further described with reference to the following figures and examples.

Referring to fig. 1, the loose-type transformer for preventing the wiring comprises a transformer body 1. The transformer body is provided with a wiring structure. The wiring structure includes a wiring nipple 11 and a compression nut 12 screwed on the wiring nipple. The transformer body is provided with a liquid storage pit 13. The wiring threaded head is positioned in the liquid storage pit. The side wall of the liquid storage pit is communicated with the bottom wall of the liquid storage pit and a supporting inclined surface 14 of the end surface. An auxiliary thread head 15 is arranged at the free end of the connection thread head. The free end face of the connection screw head is provided with 2 jacks 30. The two jacks are uniformly distributed along the circumferential direction of the wiring threaded head. The diameter of the auxiliary thread head is smaller than the diameter of the connection thread head. The thread direction of the auxiliary thread head is opposite to that of the connection thread head. The auxiliary thread head is connected with a retaining nut 16 through threads. Two through holes 17 which are aligned with the 2 jacks in a one-to-one correspondence manner are arranged on the retaining nut. The compression nut is sleeved with a top sleeve 18. Two ends of the top sleeve are butted against the compression nut and the retaining nut in a one-to-one correspondence manner. The top sleeve includes a first section 19, a second section 20, and a flare retaining mechanism 21 that drives the first section apart from the second section and maintains the separated state. The opening holding mechanism comprises two top blocks 22, a first guide inclined surface 23, a second guide inclined surface 24 and two pull cables 25 which are connected to the two top blocks in a one-to-one correspondence mode. The top piece is located between the first section and the second section. The first guide slope is provided between an end surface of the first section toward one end of the second section and the inner peripheral surface. The second guide slope is provided between an end surface of the second section toward an end of the first section and the inner peripheral surface. Two top blocks are distributed at the radial two ends of the first section. One end of the top block is connected with the first guide inclined plane in an abutting mode, and the other end of the top block is connected with the second guide inclined plane in an abutting mode. The ejector block is matched and abutted with the first guide inclined plane, and the ejector block is matched and abutted with the second guide inclined plane. The second section is located between the retaining nut and the top block. The second section is provided with a limiting notch 26 communicating the second guide inclined plane with the outer peripheral surface of the second section. The inhaul cable is arranged in the limiting notch in a penetrating mode.

When the wire pressing device is used, the wiring hole at the end part of the wire 27 is sleeved on the wiring threaded head, then the pressing nut is connected to the wiring threaded head in a threaded mode, and the wire is pressed tightly by rotating the threaded head. The wire is provided with an inclined section 28 which abuts against the inclined support surface. Then establish wiring thread head with first section cover on, shelve two kicking blocks on the first wire inclined plane, establish wiring thread head with second section cover on and the second spigot orientation kicking block, will end loose nut and twist to supplementary screw thread and all go up to ending loose nut and compress tightly the kicking block on gland nut, the kicking block moves together with wiring thread head butt inwards along wiring thread head's radial this moment, when fixing owing to the wire of difference, the thickness difference of wire can lead to ending loose nut to rotate the butt angle different, thereby lead to the through-hole to stagger with the jack, a plurality of through-holes stagger with the jack, then it aligns with the jack to become flexible end loose nut to the through-hole, insert the through-hole and jack with only rotation pole 29 and make in making to end loose nut can not rotate. Can lead to the apical cover to carry out the removal of little distance along the axial of wiring thread head when not hard up the lock nut, also make gland nut rotate an angle and produce not hard up towards the direction of loosening, for this reason, draw the kicking block outward through the cable and make first section and second section separate to can not continue to part, tie up the cable and make first section and second section enclose to enclose into at the state of separating and can not fold on the stopper bull stick, the apical cover does not have the space along wiring thread head axial displacement this moment, thereby make gland nut can not produce not hard up. And finally, pouring the conductive liquid into the liquid storage pit to submerge the compression nut.

Claims

1. A loose-type transformer capable of preventing wiring comprises a transformer body, wherein a wiring structure is arranged on the transformer body, and the loose-type transformer is characterized in that the wiring structure comprises a wiring threaded head and a compression nut in threaded connection with the wiring threaded head, an auxiliary threaded head is arranged at the free end of the wiring threaded head, the diameter of the auxiliary threaded head is smaller than that of the wiring threaded head, the thread direction of the auxiliary threaded head is opposite to that of the wiring threaded head, a stopping nut is in threaded connection with the auxiliary threaded head, a top sleeve is sleeved on the compression nut, two ends of the top sleeve are in one-to-one abutting connection with the compression nut and the stopping nut, a jack is arranged on the free end face of the wiring threaded head, a through hole aligned with the jack is formed in the stopping nut, and a rotation stopping rod penetrating in the through hole is arranged in the jack in a penetrating manner in a pull-out manner, the top sleeve comprises a first section, a second section and an opening holding mechanism for driving the first section and the second section to be separated and maintaining the first section and the second section in a separated state.

2. The transformer of claim 1, wherein the opening-keeping mechanism comprises two top blocks, a first guiding slope, a second guiding slope and a pulling cable connected to the top blocks and capable of being tied to the rotation-stopping rod, the top blocks are located between the first section and the second section, the first guiding slope is arranged between an end face of the first section facing one end of the second section and an inner circumferential surface, the second guiding slope is arranged between an end face of the second section facing one end of the first section and the inner circumferential surface, the two top blocks are arranged at two radial ends of the first section, one end of each top block abuts against the first guiding slope, and the other end abuts against the second guiding slope.

3. The wiring looseness prevention transformer of claim 2, wherein the second section is located between the retaining nut and the top block, the second section is provided with a limiting notch communicating the second guide inclined plane with the outer peripheral surface of the second section, and the stay cable penetrates through the limiting notch.

4. The loose-type transformer of claim 1, wherein a liquid storage pit is formed in the transformer body, and the connection thread head is located in the liquid storage pit.

5. The loose-acting transformer of claim 4, wherein the liquid storage pit is filled with a conductive liquid, and the compression nut is immersed in the conductive liquid.

6. The loose-type transformer of claim 4, wherein the side wall of the liquid storage pit is provided with a supporting inclined surface communicating the bottom wall and the end surface of the liquid storage pit, and the lead pressed by the compression nut is provided with an inclined section attached to the supporting inclined surface.