KR101371261B1 - Assembling and disjointing available shaft and housing of axial fan - Google Patents

Abstract

The present invention relates to an integrated device capable of separating and assembling the shaft and the housing of an axial fan, and, more specifically, to an integrated separation and assembling device capable of reducing work time required for separating or assembling the fan shaft and the fixing housing of an axial fan. The integrated device capable of separating and assembling the shaft and the housing of an axial fan according to the present invention for an effect above comprises: a rotary unit having a first gear formed on the outer circumferential surface thereof and a driving part coupled to one side of the first gear; a second gear formed into two semicircular shapes which rotates by being interlocked with the outer circumferential surface of the semicircular shape; and a housing cap consisting of multiple pins protruding from inner circumferential surface.

Description

Integrated unit capable of disassembling and assembling the shaft and housing of the axial fan {ASSEMBLING AND DISJOINTING AVAILABLE SHAFT AND HOUSING OF AXIAL FAN}

The present invention relates to an integrated device capable of disassembling and assembling the shaft and the housing of the axial fan. More particularly, the present invention relates to an axial fan capable of shortening the work time required for disassembling or assembling the fan shaft and the fixed housing of the axial fan. An integrated device capable of disassembling and assembling the shaft and the housing.

The axial fan plays a role of blowing the gas sucked in the axial direction in the axial direction by increasing the velocity and pressure of the gas by using the lift force of the wing attached to the rotor shaft. The number and size of blades attached to the rotor shaft are designed differently according to the function of the fan.In thermal power plants, it is divided into induced gas fan (IDF) and forced draft fan (FDF). The blade to be generated is composed of a blade shaft and a blade fixing portion, a guide, a counter weight, and the like.

The blade is in the form of a blade pitch control system, and the blade fixing part of the component plays an important role in supporting the blade from being detached by the centrifugal force of the fan.

Plan Preventive maintenance During construction and maintenance of the fan, the blade fixtures and seals must perform the necessary maintenance checks and replacements.

1 is a perspective view showing a coupling state of the shaft 110 and the fixed housing 120 according to the prior art, Figure 2 is a cross-sectional view showing the disassembly process of the shaft 110 and the fixed housing 120 according to the prior art. Indicates.

As a preliminary work for replacing the blade fixing part and the seal during the fan maintenance, the parts composed of the shaft 110 and the fixing housing 120 should be disassembled and the outer peripheral surface of the shaft 110 and the shaft ( The inner circumferential surface of the fixed housing 120 to be coupled to the 110 is formed with a thin threaded screw, so when disassembling them, the steel bar 130 is inserted into the rotating groove 122 formed on the outer circumferential surface of the fixed housing 120 to rotate. The blade shaft 110 and the fixed housing 120 can be disassembled.

However, the axial fan 100 according to the prior art configured as described above takes at least 15 minutes to separate the one shaft 110 and the fixed housing 120, and the fixed housing 120 and the shaft 110. Since the number of is installed 20 to 48 or more per fan depending on the type of fan of the thermal power plant, there is a problem that it takes too much time to disassemble the fixed housing 120 and the shaft 110 is not efficient.

The present invention has been made to solve the above-mentioned problems of the prior art, by mounting a gear-shaped housing cap on the outer peripheral surface of the fixed housing of the fan, by rotating the housing cap using a gear unit that meshes with the gear of the housing cap, The present invention provides an integrated device capable of disassembling and assembling the shaft and housing of an axial fan, which can shorten the work time taken in disassembling and assembling the shaft and the fixed housing.

In order to achieve the above object, the present invention includes a rotating unit comprising a first gear formed on an outer circumferential surface, a driving unit coupled to one side of the first gear; And a housing cap comprising two semicircular shapes, a second gear rotating in engagement with the first gear with a semicircular outer circumferential surface, and a plurality of pins protruding from the inner circumferential surface. An integrated device capable of disassembling and assembling the housing is provided.

In addition, in the present invention, the housing cap is characterized in that it is coupled to the fixed housing is formed a rotary groove engaging the pin.

In addition, in the present invention, the first gear is rotated by air pressure, and the second gear meshing with the first gear is rotated to separate the shaft coupled with the fixed housing and the fixed housing.

In addition, in the present invention, a thread is formed on the inner circumferential surface of the fixed housing and the outer circumferential surface of the shaft.

In the present invention, at least three pins are provided inside the housing cap.

In addition, in the present invention, the pin is formed inside the housing cap to correspond to the number of unit holes formed in the maximum fixed housing.

In addition, in the present invention, the two semicircular housing caps are characterized in that they are assembled by screwing together.

In addition, in the present invention, the driving unit is characterized by rotating the first gear by applying air pressure to the first gear.

According to the integrated device capable of disassembling and assembling the shaft and the housing of the axial fan of the present invention, the shaft and the fixed housing are provided by mounting a housing cap including a first gear unit and a second gear to be engaged with the first gear unit in the fixed housing. Disassembling and assembling, disassembling and assembling the shaft and housing of the axial fan, which can shorten the working time for disassembling and assembling the shaft and the fixed housing by rotating the first gear and the second gear using the first gear unit. It is possible to provide an integrated device.

1 is a perspective view showing a coupling state of a shaft and a fixed housing according to the prior art;
2 is a cross-sectional view showing the disassembly process of the shaft and the fixed housing according to the prior art;
3 is a perspective view of a housing cap according to the present invention;
4 is a cross-sectional view of the housing cap of FIG. 3;
5 is a plan view of a rotating unit according to the invention;
6 is a perspective view showing a state in which the housing cap of FIG. 3 and the rotating unit of FIG. 5 are coupled to the fixed housing; And
7 is a cross-sectional view illustrating a disassembly process of the shaft and the fixed housing using the housing cap of FIG. 3 and the rotating unit of FIG. 5.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings and the following description. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that the disclosure can be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. Like reference numerals designate like elements throughout the specification.

3 shows a perspective view of a housing cap 220 according to the invention, and FIG. 4 shows a cross-sectional view of the housing cap 220 of FIG. 3.

As shown in FIG. 3, the housing cap 220 has two semicircle shapes to form a single ring shape. In order to form a single ring shape, two semicircular housing caps 220 have a screw coupling ( 230).

Here, a groove is formed on the top surface of the semicircular housing cap 220 that is correspondingly coupled to form a screw thread into which the bolt is inserted for screwing.

In addition, the housing cap 220 is composed of a second gear 222 formed around the outer peripheral surface, a plurality of pins 224 protruding from the inner peripheral surface.

When the shaft 110 and the fixed housing 120 are separated, they are disassembled while being rotated by the second gear 222, and in order to prevent the housing cap 220 from being separated by the centrifugal force generated while rotating, a plurality of pins ( 224 is formed, the plurality of pins 224 is configured to be engaged with the rotary groove 122 formed in the fixed housing 120 of the axial fan on which the housing cap 220 is mounted, so that the housing cap 220 is fixed housing 120 ) Support to prevent deviation from).

In addition, the plurality of pins 224 are engaged with the rotary grooves 122 formed in the fixed housing 120, and may serve to rotate the fixed housing 120 by receiving a force that the second gear 224 rotates. .

Six rotation grooves 122 formed on the outer circumferential surface of the fixed housing 120 are formed at regular intervals, and when the housing cap 220 is coupled in one ring shape from two semicircle shapes, the rotation grooves 122 are formed in the rotation groove 122. A plurality of interlocking pins 222 may be formed to protrude from the inner circumferential surface of at least three ring-shaped housing caps 220 such that the housing caps 220 are supported by the fixed housing 120.

In addition, the plurality of pins 222 may be formed to correspond to a maximum of six rotary grooves 122 formed in the fixed housing 120.

5 shows a plan view of a rotating unit 240 according to the invention.

As shown in FIG. 5, the rotation unit 240 is formed of a first gear 242 and a first gear 242 formed to engage with a second gear 224 formed in the housing cap 220 on an outer circumferential surface of a circular shape. It is composed of a drive unit 244 coupled to one side of the first gear 242 in order to apply the air pressure to rotate the first gear 242.

FIG. 6 is a perspective view illustrating a state in which the housing cap 220 of FIG. 3 and the rotation unit 240 of FIG. 5 are coupled to the fixed housing 120, and FIG. 7 is the housing cap 220 of FIG. 3, and FIG. 5 is a cross-sectional view illustrating a disassembly process of the shaft 110 and the fixed housing 120 using the rotation unit 240.

As shown in FIG. 6, the housing cap 220 is mounted on an outer circumferential surface of the fixed housing 120 to be disassembled.

When a plurality of pins 222 protruding from the inner circumferential surface of the housing cap 220 are inserted into and fixed to some of the plurality of rotating grooves 122 formed on the outer circumferential surface of the fixed housing 120, the two semicircular housing caps 220 are formed. It is made of one ring shape, by screwing the upper surface of the housing cap 220 made of one ring shape in this way to fix the housing cap 220 to the fixed housing 120.

Thereafter, the second gear 224 formed on the outer circumferential surface of the housing cap 220 and the first gear 242 formed on the outer circumferential surface of the rotating unit 240 are engaged.

Finally, when air pressure is applied to the driving unit 244 of the rotating unit 240, the first gear 242 is rotated by the air pressure of the driving unit 244, and the first gear 242 is rotated. As a result, the second gear 222 meshing with the first gear 242 rotates.

When the second gear 224 is rotated, the rotary groove 122 fixed with the pin 222 moves along the direction of rotation of the second gear 242, whereby the fixed housing 120 rotates the second gear 224. Direction, and the fixed housing 120 and the shaft 110 screwed with the fixed housing 120 are disassembled.

On the contrary, when the disassembled fixed housing 120 and the shaft 110 are coupled, the disassembling process of the fixed housing 120 and the shaft 110 may be repeated.

At this time, the rotation direction of the first gear 242 of the rotary unit 240, the second gear 222 of the housing cap 220 is different from the rotation direction in which the fixed housing 120 and the shaft 110 described above are disassembled. Rotate in the other direction.

As described above, in the integrated device 200 capable of disassembling and assembling the shaft and the housing of the axial fan according to the embodiment of the present invention, the first gear 242 is formed on the outer circumferential surface of the rotating unit 240, and the fixed housing ( When disassembling and assembling the shaft 110 and the fixed housing 120 by attaching the housing cap 220 in which the second gear 224 is engaged with the first gear 242, the 120 is formed. Using 242, the first gear 242 and the second gear 224 may be rotated to shorten the work time required to disassemble and assemble the shaft 110 and the fixed housing 120.

As described above, the integrated device capable of disassembling and assembling the shaft and the housing of the axial fan of the present invention with reference to the preferred embodiment of the present invention has been described, but it is possible to modify, change and variously within the scope of the present invention. It is apparent to those skilled in the art that alternative embodiments are possible.

100: axial fan 110: shaft
120: fixed housing 122: rotation groove
130: steel bar
200: integrated device capable of disassembling and assembling the shaft and housing of the axial fan
220: housing cap 222: pin
224: second gear 230: screwing
240: rotating unit 242: first gear
244 drive unit

Claims (8)

A rotating unit including a first gear formed on an outer circumferential surface and a driving unit coupled to one side of the first gear; And
A shaft of the axial fan including two semicircular shapes, a housing cap including a second gear rotating in engagement with the first gear and a plurality of pins protruding from the inner circumferential surface with a semicircular outer circumferential surface; Integral device for disassembling and assembling the housing. The method of claim 1,
And the housing cap is coupled to a fixed housing in which a rotating groove is formed to engage the pin. The integrated device capable of disassembling and assembling the shaft and the housing of the axial fan. 3. The method of claim 2,
The first gear is rotated by air pressure, the second gear meshing with the first gear is rotated to separate the shaft and the housing coupled to the fixed housing and the fixed housing shaft and housing of the axial flow fan. Integrated device that can be disassembled and assembled. The method of claim 3, wherein
Integral device capable of disassembling and assembling the shaft and the housing of the axial flow fan, characterized in that the screw thread is formed on the inner peripheral surface of the fixed housing and the outer peripheral surface of the shaft. 3. The method of claim 2,
And at least three pins are provided inside the housing cap to disassemble and assemble the shaft and the housing of the axial fan. The method of claim 5, wherein
And the pin is formed inside the housing cap so as to correspond to the maximum number of unit holes formed in the fixed housing, wherein the shaft and the housing of the axial fan are disassembled and assembled. The method of claim 1,
And the two semicircular housing caps are assembled by screwing together. The method of claim 1,
And the drive unit disassembles and assembles the shaft and the housing of the axial fan, wherein the first gear is rotated by applying air pressure to the first gear.

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