CN218452591U - Zero sequence or punching current transformer form removal tool - Google Patents

Abstract

The utility model discloses a zero sequence or feed-through current transformer stripping tool, which comprises a left half mould, a right half mould, a mould upper bottom plate, a mould lower bottom plate, an L-shaped plate and a bolt; four groups of L-shaped plates are welded on the outer side plates of the left half die and the right half die, the short sides of the L-shaped plates are perpendicular to the side wall of the die, the long sides of the L-shaped plates are parallel to the side wall of the die, a screw hole is formed in the center of the plate surface where the long sides of the L-shaped plates are located, and a bolt penetrates through the screw hole and abuts against the side walls of the upper bottom plate and the lower bottom plate of the die. The utility model discloses saved the original manual operation degree of difficulty for the form removal mode is simplified, has improved the maintenance and the life of mould.

Description

Zero sequence or punching current transformer form removal tool

Technical Field

The utility model relates to a mutual-inductor casting mold dismantles the mode, in particular to safe, reliable, laborsaving zero sequence or punching current transformer form removal frock.

Background

Zero sequence or feedthrough current transformers are single turn feedthrough current transformers, typically used for power measurement or protection, such as: the current measurement and protection, the small current grounding line selection device, the microcomputer resonance elimination device and the like are used in a matching way. In the demoulding procedure of the zero sequence or straight-through current transformer mould, the mould is mostly disassembled by adopting a traditional hammering mode. The mould of the zero sequence or straight-through current transformer mostly adopts the design mode of a left half mould, a right half mould and an upper bottom plate and a lower bottom plate. The existing mould disassembling mode is to disassemble the upper bottom plate and the lower bottom plate by using a screwdriver or a crowbar, then disassemble the remaining two half moulds, firstly pry the remaining half mould of the lower half mould by using the screwdriver, and then use a copper hammer to smash the central plane part of the mould, so that the casting body is shaken out of the mould cavity. This dismantlement mode is high strength, high risk, high scrap mode, and this just makes the mould defect appear easily, and maintenance need be maintained frequently, and this mode pouring body is difficult to normally dismantle away from the mould, leads to the mould to dismantle complicacy, and wastes time and energy.

Disclosure of Invention

The utility model provides a to prior art not enough, the utility model provides a safe, reliable, laborsaving zero sequence or punching current transformer form removal frock.

The technical scheme adopted by the utility model is a zero sequence or feed-through current transformer stripping tool, which comprises a left half module, a right half module, a die upper bottom plate, a die lower bottom plate, an L-shaped plate and a bolt; four groups of L-shaped plates are welded on the outer side plates of the left half die and the right half die, the short sides of the L-shaped plates are perpendicular to the side wall of the die, the long sides of the L-shaped plates are parallel to the side wall of the die, a screw hole is formed in the center of the plate surface where the long sides of the L-shaped plates are located, and a bolt penetrates through the screw hole and abuts against the side walls of the upper bottom plate and the lower bottom plate of the die.

In the preferred embodiment of the present invention, the L-shaped plate is higher than the upper and lower mold plates at the corresponding positions.

The technical effects are as follows: because the thickness of the upper bottom plate and the lower bottom plate of the die is about 12mm-14mm, and the jackscrew is at least an M10 bolt, if the height of the L-shaped plate and the height of the bottom plate are on the same plane, the distance between the M10 threaded hole and the upper end surface of the L-shaped plate is only 2-3mm, and the L-shaped plate can not meet the strength requirement after the jackscrew is stressed.

In a preferred embodiment of the present invention, the L-shaped plate is horizontally welded to the outer side plates of the corresponding left and right half molds.

The technical effects are as follows: the length of the arm of force of the L-shaped plate is shortened, and the die is easier to disassemble after the jackscrew is stressed.

The utility model has the advantages that: the utility model provides a dismantle frock changes original form removal mode, utilizes the principle of effort and reaction force, pounces traditional hammer and dismantles the mode, changes into the mode that the mould opened about using the jackscrew will be controlled. The original high-strength, high-risk and high-scrap mode is changed into a safer, reliable and labor-saving labor mode, so that the left half die and the right half die are easily disassembled. The disassembly of the die is simplified, the original manual operation difficulty is saved, the maintenance of the die is improved, and the service life of the die is prolonged

Drawings

Fig. 1 is a state view in which the bolt is not screwed into the L-shaped plate.

Fig. 2 is a schematic view showing that the left and right half molds are naturally separated after the bolt is screwed into the L-shaped plate.

Fig. 3 is a perspective view showing the left and right half molds separated naturally after the bolts are screwed into the L-shaped plate.

The mark in the figure is: 1-left half die, 2-right half die, 3-bolt, 4-L-shaped plate, 5-die upper bottom plate and 6-die lower bottom plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of the embodiments of the present invention, as generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

The current mould dismounting mode of the zero sequence or straight-through current transformer is to firstly dismount the upper and lower bottom plates by using a screwdriver or a crowbar, and then dismount the remaining two half moulds, so that the casting body is shaken out from the mould cavity. This dismantlement mode is high strength, high risk, high scrap mode, and this just makes the mould defect appear easily, and maintenance need be maintained frequently, and this mode pouring body is difficult to normally dismantle away from the mould, leads to the mould to dismantle complicacy, and wastes time and energy. The utility model provides a dismantle frock changes original form removal mode, has utilized the principle of effort and reaction force, will originally high strength, high risk, high scrap mode change into safer, reliable, laborsaving work mode. In order to reduce the operation difficulty of workers, the mould unloading mode is changed into a mode that a jackscrew props an upper bottom plate and a lower bottom plate of the mould, and a mode of reacting force is utilized, so that the left half mould and the right half mould are easily disassembled.

The utility model has the specific structure comprising a left half mould 1, a right half mould 2, a mould upper bottom plate 5, a mould lower bottom plate 6, an L-shaped plate 4 and a bolt 3; increase the use of L template 4 the outer panel of left half mould 1 and right half mould 2 on weld four groups of L templates 4, correspond four groups of positions, it is corresponding from top to bottom about to the cross-sectional direction of L template 4, the perpendicular mould lateral wall of minor face of L template 4, the L type is also inwards buckled to the mould, its long limit is parallel with the mould lateral wall, the center department of the long limit place face of L template 4 be provided with the screw, bolt 3 passes behind the screw just in time top and lean on the lateral wall of mould upper plate 5 and mould lower plate 6. The L-shaped plate 4 is slightly higher than the upper bottom plate 5 and the lower bottom plate 6 of the die at corresponding positions. Because the thickness of the upper bottom plate and the lower bottom plate of the die is about 12mm-14mm, and the jackscrew is at least an M10 bolt, if the height of the L-shaped plate 4 and the height of the bottom plate are on the same plane, the distance between the M10 threaded hole and the upper end surface of the L-shaped plate 4 is only 2-3mm, and the L-shaped plate 4 can not meet the strength requirement after the jackscrew is stressed. Therefore, the L-shaped plates 4 are slightly higher than the upper and lower mold plates 5 and 6 at the corresponding positions, and the L-shaped plates 4 are horizontally welded to the outer side plates of the corresponding left and right mold halves 1 and 2. The length of the force arm of the L-shaped plate 4 is shortened, the die is easier to disassemble after the jackscrew is stressed, and the die can be disassembled only by applying larger force if the die is not horizontally welded.

The operation steps are as follows: at first through the air wrench with four group's 3 screws of bolt go into four group's L templates 4 for four group's bolts 3 wait respectively to lean on the upper and lower mould bottom plate of mould, because effort and reaction force's principle can be along with the continuous screw of bolt goes into, thereby make left half mould 1 and right half mould 2 receive the reaction force of bolt 3 separately naturally, next, dismantle the upper and lower bottom plate of mould again, the prior art's of comparison form removal mode, the utility model discloses saved original manual operation degree of difficulty, makeed form removal mode simplification, improved the maintenance and the life of mould.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (3)

1. Zero sequence or punching current transformer form removal frock, its characterized in that: comprises a left half die (1), a right half die (2), a die upper bottom plate (5), a die lower bottom plate (6), an L-shaped plate (4) and a bolt (3); the outer side plate of left half mould (1) and right half mould (2) on weld four groups L template (4) to the cross-sectional direction of L template (4), the perpendicular mould lateral wall of minor face of L template (4), its long limit is parallel with the mould lateral wall, the center department of the long limit place face of L template (4) be provided with the screw, bolt (3) pass the screw top lean on the mould on the lateral wall of bottom plate (5) and mould lower plate (6).

2. The zero sequence or straight-through current transformer form removal tool of claim 1, characterized in that: the L-shaped plate (4) is higher than the upper bottom plate (5) and the lower bottom plate (6) of the die at the corresponding positions.

3. The zero sequence or straight-through current transformer form removal tool of claim 1, characterized in that: the L-shaped plates (4) are horizontally welded on the corresponding outer side plates of the left half mould (1) and the right half mould (2).

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