CN216353722U

CN216353722U - Mine explosion-proof dry type transformer iron core clamping device

Info

Publication number: CN216353722U
Application number: CN202123278055.3U
Authority: CN
Inventors: 王海滨; 王志军
Original assignee: Fushun Special Transformer Manufacturing Co ltd
Current assignee: Fushun Special Transformer Manufacturing Co ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-04-19
Anticipated expiration: 2031-12-24

Abstract

The utility model discloses a mining flameproof dry-type transformer core clamping device which comprises a flameproof shell, a lower iron yoke, an upper iron yoke, an iron core and a fastening frame, wherein the lower iron yoke is fixedly installed inside the flameproof shell through bolts; according to the utility model, the two-way threaded rod arranged in the flameproof shell is rotated to enable the tightening plates of the two fastening frames to move oppositely along the two-way threaded rod through the threaded holes, and then every two of the two fastening frames are close to the iron core, so that the clamping plates extend to the gap between the two adjacent iron cores and abut against the iron core, the iron core is clamped on the basis of the traditional binding and fixing of the lower iron yoke and the upper iron yoke, the phenomena of displacement and vibration of the iron core in the actual use process are avoided, and the integral structural strength and the installation reliability of the transformer are effectively improved.

Description

Mine explosion-proof dry type transformer iron core clamping device

Technical Field

The utility model relates to the technical field of transformers, in particular to a mining explosion-proof dry-type transformer core clamping device.

Background

The mining explosion-proof dry-type transformer is used in places with explosion risks in mines. The transformer is mainly made into a dry type, and has the main structural characteristics that all joint surfaces of a box shell are made according to the explosion-proof requirement, and can bear the internal pressure of 0.8 MPa, and the main structure comprises: the mining transformer comprises a mining transformer main body, a high-pressure head of a high-pressure side wire inlet end (used for controlling the on-off of the high-pressure side wire inlet end and provided with a protection circuit) and a low-pressure head of a low-pressure side wire outlet end (used for controlling the on-off of the low-pressure side wire inlet end and provided with a protection circuit).

An iron core of an existing mining explosion-proof dry-type transformer is usually fixed in a bundling mode through iron yokes, and due to the particularity of a use environment, the iron core is prone to shifting and vibrating in the actual use process, and the use safety of the transformer is affected.

Therefore, the mining explosion-proof dry-type transformer core clamping device has the advantage of stable clamping of the core, and further solves the problems in the background technology.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art, and provides a mining explosion-proof dry-type transformer core clamping device.

In order to achieve the purpose, the utility model adopts the following technical scheme: mining flame-proof type dry-type transformer iron core clamping device, including flame proof shell, lower yoke, go up yoke, iron core and fastening frame, the inside yoke that has down of flame proof shell through bolt-up mounting, and the top of yoke is provided with down the yoke, fixed mounting has a plurality of iron cores down between yoke and the last yoke, down the both sides of yoke, last yoke and iron core all are provided with the fastening frame, and the four corners of fastening frame all alternates and be connected with the guide arm, the both ends and the flame proof shell inner wall welding of guide arm, the both ends of fastening frame all weld and tighten up the board, and the intermediate position threaded connection of tightening up the board has two-way threaded rod, the fastening frame has the clamp plate towards the one side welding of iron core, and clamp plate and iron core butt.

As a further description of the above technical solution: the fastening frames are provided with two fastening frames, two bidirectional threaded rods are in threaded connection between the two fastening frames, one ends of the bidirectional threaded rods are connected with the flameproof shell through bearing seats, and the other ends of the bidirectional threaded rods are fixedly connected with hand wheels.

As a further description of the above technical solution: the bottom surface welding of indisputable yoke has two mounting panels down, and the surface of two mounting panels passes through bolt and flame proof shell fixed connection.

As a further description of the above technical solution: the fastening frame is formed by two diaphragms and the combination of welded tightening plate between two diaphragms, two the both ends of diaphragm all correspond the guide arm and seted up the through-hole, and the equal inclined welding in surface of two diaphragms has a plurality of clamp plates, the middle part of tightening plate corresponds two-way threaded rod and sets up threaded hole.

As a further description of the above technical solution: and a rubber strip is bonded on one surface of the clamping plate facing the iron core.

As a further description of the above technical solution: and the middle part of the tightening plate is provided with a bending part with a U-shaped structure.

The utility model has the following beneficial effects:

according to the utility model, the tightening plates of the two fastening frames are enabled to move oppositely along the two-way threaded rods through the threaded holes by rotating the two-way threaded rods installed in the flameproof shell, and then the two fastening frames are close to the iron core by a group of two opposite clamping plates welded in an inclined manner, so that the clamping plates extend to the gap between the two adjacent iron cores and abut against the iron core, the iron core is clamped on the basis of the traditional binding and fixing of the lower iron yoke and the upper iron yoke, the phenomenon that the iron core shifts and vibrates in the actual use process is avoided, the integral structural strength and the installation reliability of the transformer are effectively improved, meanwhile, the iron core is clamped by the two-way threaded rods, the convenience of clamping and releasing the clamping state of the iron core can be increased, and the later-stage disassembly and maintenance of the iron core are facilitated.

Drawings

FIG. 1 is a schematic diagram of the internal structure of the iron core clamping device of the mining explosion-proof dry-type transformer;

FIG. 2 is an internal side view of the mining flameproof dry-type transformer core clamping device of the present invention;

FIG. 3 is a schematic structural view of a fastening frame of the mining flameproof dry-type transformer core clamping device.

Illustration of the drawings:

1. an explosion-proof shell; 2. a lower iron yoke; 3. an upper iron yoke; 4. an iron core; 5. a fastening frame; 6. tightening the plate; 7. a bidirectional threaded rod; 8. a guide bar; 9. a clamping plate; 10. a through hole; 11. a threaded bore.

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.

According to the embodiment of the utility model, the utility model provides a clamping device for a mining explosion-proof dry-type transformer core.

The utility model is further explained by combining the attached drawings and the detailed implementation mode, as shown in fig. 1-3, the mining flame-proof type dry-type transformer iron core clamping device according to the embodiment of the utility model comprises a flame-proof shell 1, a lower iron yoke 2, an upper iron yoke 3, iron cores 4 and a fastening frame 5, wherein the lower iron yoke 2 is fixedly installed inside the flame-proof shell 1 through bolts, the upper iron yoke 3 is arranged above the lower iron yoke 2, a plurality of iron cores 4 are fixedly installed between the lower iron yoke 2 and the upper iron yoke 3, the fastening frames 5 are respectively arranged on two sides of the lower iron yoke 2, the upper iron yoke 3 and the iron cores 4, guide rods 8 are respectively and alternately connected with four corners of the fastening frames 5, two ends of each guide rod 8 are welded with the inner wall of the flame-proof shell 1, tightening plates 6 are respectively welded on two ends of each fastening frame 5, a bidirectional threaded rod 7 is connected with the middle position of each tightening plate 6, one side of each fastening frame 5 facing the iron core 4 is welded with a clamping plate 9, when the iron core 4 is clamped, the two-way threaded rod 7 installed in the flameproof shell 1 is rotated to enable the tightening plates 6 of the two fastening frames 5 to move oppositely along the two-way threaded rod 7 through the threaded hole 11, and then the two fastening frames 5 are close to the iron core 4 by one group of the two clamping plates 9 welded obliquely in pairs on opposite surfaces, so that the clamping plates 9 extend to a gap between the two adjacent iron cores 4 and are abutted against the iron core 4, the iron core 4 is clamped on the basis of the traditional binding and fixing of the lower iron yoke 2 and the upper iron yoke 3, the phenomenon that the iron core 4 shifts and vibrates in the actual use process is avoided, and the integral structural strength and the installation reliability of the transformer are effectively improved;

in an embodiment, the fastening frame 5 is provided with two, and threaded connection has two-way threaded rod 7 between two fastening frames 5, and the one end of two-way threaded rod 7 is passed through the bearing frame and is connected with flame proof housing 1, and the other end fixedly connected with hand wheel of two-way threaded rod 7, the rotation of the two-way threaded rod 7 of being convenient for through the hand wheel, owing to adopt two-way threaded rod 7 to carry out the clamp of iron core 4 tightly, can increase the convenience that iron core 4 presss from both sides tightly and removes the tight state of clamp, be favorable to the dismantlement in iron core 4 later stage to be maintained.

In one embodiment, two mounting plates are welded on the bottom surface of the lower iron yoke 2, the surfaces of the two mounting plates are fixedly connected with the flameproof shell 1 through bolts, and the lower iron yoke 2 is convenient to mount through the mounting plates and the bolts.

In an embodiment, the fastening frame 5 is formed by two diaphragms and the combination of the tightening plate 6 welded between the two diaphragms, the two ends of the two diaphragms are provided with through holes 10 corresponding to the guide rods 8, the surfaces of the two diaphragms are obliquely welded with a plurality of clamping plates 9, the middle part of the tightening plate 6 is provided with threaded holes 11 corresponding to the bidirectional threaded rod 7, wherein the clamping plates 9 are in an eight-shaped structure in a group, so that the clamping plates extend to the position between two adjacent iron cores 4, and the iron cores 4 are clamped and fixed.

In one embodiment, a rubber strip is bonded to the surface of the clamping plate 9 facing the iron core 4, and the rubber strip can prevent the clamping plate 9 from directly contacting the iron core 4, so as to prevent contact short circuit.

In one embodiment, the middle of the tightening plate 6 is provided with a bent portion of a U-shaped configuration, by which the required length of the bidirectional threaded rod 7 is facilitated to be shortened.

The working principle is as follows:

when in use, the device is firstly moved to a proper position, when the iron core 4 is clamped, the two-way threaded rod 7 arranged in the flameproof shell 1 is rotated to drive the tightening plates 6 of the two fastening frames 5 to move oppositely along the two-way threaded rod 7 through the threaded holes 11, and then the two opposite surfaces of the two fastening frames 5 are close to the iron core 4 by a group of the clamping plates 9 which are welded in an inclined way, so that the clamping plates 9 extend to the gap between the two adjacent iron cores 4 and are abutted against the iron cores 4, the clamping of the iron core 4 is carried out on the basis of the binding and fixing of the traditional lower iron yoke 2 and the upper iron yoke 3, the phenomena of displacement and vibration of the iron core 4 in the actual use process are avoided, the integral structural strength and the installation reliability of the transformer are effectively improved, and simultaneously, because adopt two-way threaded rod 7 to carry out the clamp of iron core 4, can increase the convenience that iron core 4 pressed from both sides tightly and relieved the tight state of clamp, be favorable to the dismantlement maintenance in iron core 4 later stage.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims

1. Mining flame-proof type dry-type transformer core clamping device, including flame proof shell (1), indisputable yoke (2) down, go up indisputable yoke (3), iron core (4) and fastening frame (5), its characterized in that: the flameproof shell (1) is internally provided with a lower iron yoke (2) through bolt fastening, the upper portion of the lower iron yoke (2) is provided with an upper iron yoke (3), a plurality of iron cores (4) are fixedly mounted between the lower iron yoke (2) and the upper iron yoke (3), the two sides of the lower iron yoke (2), the upper iron yoke (3) and the iron cores (4) are provided with fastening frames (5), guide rods (8) are connected with the four corners of the fastening frames (5) in an alternating mode, the two ends of the guide rods (8) are welded to the inner wall of the flameproof shell (1), tightening plates (6) are welded to the two ends of the fastening frames (5), two-way threaded rods (7) are connected to the middle positions of the tightening plates (6), the fastening frames (5) are welded to one side of the iron cores (4) to form clamping plates (9), and the clamping plates (9) are abutted to the iron cores (4).

2. The mining flameproof dry-type transformer core clamping device according to claim 1, characterized in that: the explosion-proof device is characterized in that the two fastening frames (5) are arranged, two bidirectional threaded rods (7) are connected between the two fastening frames (5) in a threaded mode, one ends of the bidirectional threaded rods (7) are connected with the explosion-proof shell (1) through bearing seats, and the other ends of the bidirectional threaded rods (7) are fixedly connected with hand wheels.

3. The mining flameproof dry-type transformer core clamping device according to claim 1, characterized in that: the bottom surface welding of indisputable yoke (2) has two mounting panels down, and the surface of two mounting panels passes through bolt and flame proof shell (1) fixed connection.

4. The mining flameproof dry-type transformer core clamping device according to claim 1, characterized in that: fastening frame (5) are formed by two diaphragms and the combination of welded tightening plate (6) between two diaphragms, two the both ends of diaphragm all correspond guide arm (8) and seted up through-hole (10), and the equal slope welding in surface of two diaphragms has a plurality of clamp plates (9), the middle part of tightening plate (6) corresponds two-way threaded rod (7) and seted up threaded hole (11).

5. The mining flameproof dry-type transformer core clamping device according to claim 1, characterized in that: and a rubber strip is bonded on one surface of the clamping plate (9) facing the iron core (4).

6. The mining flameproof dry-type transformer core clamping device according to claim 1, characterized in that: the middle part of the tightening plate (6) is provided with a bending part with a U-shaped structure.