KR101843949B1 - Retaining ring expansion system with detachable wedge and base rail. - Google Patents

Abstract

The present invention relates to a retaining ring expansion apparatus and, more specifically, to a retaining ring expansion apparatus which arranges separable wedges and a base rail in a retaining ring, and then inserts a punch into a hollow space arranged on the separable wedges to widen a gap between the separable wedges and use the widened gap to expand the retaining ring. According to the present invention, a lubricant is arranged between a punch and a wedge during cold expansion work, and a trapping phenomenon by friction between the punch and the wedge is prevented by a separable wedge structure. Also, the wedge is arranged to be separable to allow a wedge portion directly coming in contact with the punch to be made of a high strength material resistant against friction in comparison to a conventional integrated wedge. Such a structure eliminates a need for including a separate trapping prevention apparatus, allows the wedge to be made of a high strength material, and allows only the wedge portion directly coming in contact with the punch to be separately replaced during maintenance and repair to reduce maintenance and repair costs. Additionally, a base rail is included to uniformly and quickly allow initial wedge setting and prevent each wedge from falling to a hollow space arranged on a base or the like when setting wedges.

Description

Retaining ring expansion system with detachable wedges and base rails. Retaining ring expansion system with detachable wedge and base rail.

The present invention relates to a retaining ring expansion device, and more particularly, to a method of manufacturing a retaining ring, which comprises providing a detachable wedge and a base rail in a retaining ring, inserting a punch into a hollow portion provided in the detachable wedge, And enlarges the retaining ring by using it.

According to the prior art Patent Registration No. 10-1167711 (expanded piping system), the expansion pipe system can improve the working efficiency, shorten the expansion time, reduce the burden on the worker, A plurality of rollers each having a tapered portion having a large front diameter, a cylindrical expander frame rotatably supporting the plurality of rollers in a concentric manner, and a plurality of rollers slidable and rotatable about the expander frame And a tapered portion of the mandrel is brought into contact with the tapered portion of the plurality of rollers by advancing the mandrel relative to the expander frame An enlargement apparatus for enlarging a diameter of an enlarged diameter constituted by a circumscribed circle of a plurality of rollers, the enlargement apparatus being connected to an expander frame, Drive means for rotating the frame and the expander, it is described hayeotdago further comprising a moving means for forward and backward relative to the expander mandrel frame.

According to Registration No. 10-0583469 (pipe expanding apparatus), the pipe expanding apparatus includes a base plate having a large plate shape, a first support having a semicircular shape with a bottom surface fixed to one side of the base plate, A second cylinder which is fixed to one side of the first support by a predetermined distance on a side line of the first cylinder and which is fixed to one side of the first support, A second support having a semi-circular shape formed with a cylinder, a push rod coupled to the front of the second cylinder to reciprocate back and forth, a bottom surface fixed to the other side of the base plate and having a passage connecting the press hole and the insertion hole, A pair of clamps inserted in the insertion hole of the second support, a pressing piece inserted in the passage of the second support so as to be movable left and right to press the clamp, A pair of dies inserted in the clamp and adapted to fix the outer circumferential surface of the pipe, and a cover fixed to the first support and the second support to protect the inside of the pipe, So that the center operation and the expansion work of the pipe can be easily carried out.

However, in the conventional apparatus, there is a problem in that the structure is complicated and the residual space is frequent, and manpower and time are excessively consumed in the expanding operation

Further, in the above-described expansion process, when the punch is removed after inserting the punch or the like, frictional force is applied to the punch and the wedge portion to cause the wedge to be damaged or to be driven together with the punch. , There is a problem that the gap between the wedges is not constant or the initial wedge setting is uniform and not rapid

KR 1167711

The present invention has been devised to solve the above problems, and it is possible to provide a lubricant between the punch and the wedge during the cold expansion work, and to prevent the wedge from being pinched by friction between the punch and the wedge by the separate wedge structure.

Further, by providing the wedge in a detachable manner, it is possible to provide the wedge portion which is in direct contact with the punches as compared with the conventional integral wedge, by a material having high strength and high friction.

With this configuration, it is unnecessary to provide a separate anti-jamming device, and it is possible to form the wedge with a material of higher strength. In the maintenance and repair, only the wedge portion contacting with the punch can be separately replaced, . ≪ / RTI >

In addition, by providing the base rail, it is possible to uniformly and quickly set the initial wedge setting, and it is possible to prevent the risk that each wedge can fall into the hollow provided on the base or the like during wedge setting.

In order to achieve the above object, according to one embodiment of the present invention, there is provided a retaining ring expansion pipe system comprising: a flat floor provided on a floor of a ground or a facility; a base provided on an upper surface of the floor; A plurality of wedges provided on the ring-shaped base, a plurality of wedges, and a punch capable of penetrating the hollow provided in the base, and a plurality of punches provided on the punch, It is possible to provide a retaining ring expansion pipe having a detachable wedge including a wedge and a press for applying a load to be inserted into a hollow provided in the base and a base rail.

Preferably, the base is provided in a ring shape having a predetermined thickness on the upper surface of the plane floor, and the ring-shaped base is provided with a hollow portion so that the punch can be inserted.

In addition, the plurality of base rails may be linearly arranged on each base rail piece, and may be arranged on the upper surface of the ring-shaped base at regular intervals in the circumferential direction.

Preferably, the plurality of base rail pieces include at least one bolt groove for fixing the base rail piece and the base, respectively, and are bolted to the base.

In addition, the plurality of base rail pieces may have an interference fit structure for fixing the base rail piece and the base, respectively.

In addition, the plurality of wedges may have a shape arranged at a predetermined interval in the circumferential direction on the upper surface of the base, which is provided in a ring shape having a predetermined thickness.

The plurality of wedges may include a planar lower plate provided at the lowermost end of each wedge, a body member provided on the upper surface of the lower plate and slidably driven at a predetermined angle, and a slide member desirable.

The body member and the slide member may be provided with protrusions and inserts in respective body members and slide members that are slidable between the body member and the slide member but are not separated from each other.

In addition, the body member and the slide member may be slidable between the body member and the slide member, and each of the contact surfaces may be inclined at an angle of 6 degrees with respect to the upper direction of the body member, .

The slide member may have a contact surface of the slide member with which the slide member is in contact with the punch has an inclination angle of 4 degrees outside the upper portion of the slide member.

In addition, it is preferable that the punch is provided in a downwardly conical shape, and the contact surface contacting the plurality of wedge surfaces has an inclination angle of 4 degrees outside the upper part of the punch.

According to the configuration of the present invention, a lubricant is provided between the punch and the wedge during the cold expansion work, and there is an effect of preventing the wedge-shaped friction due to the friction between the punch and the wedge by the detachable wedge structure.

In addition, by providing the wedge in a detachable manner, there is an effect that the wedge portion which is in direct contact with the punches as compared with the conventional integral type wedge can be provided with a material having high strength against friction.

With this configuration, it is unnecessary to provide a separate anti-jamming device, and it is possible to form the wedge with a material of higher strength. In the maintenance and repair, only the wedge portion contacting with the punch can be separately replaced, There is an effect to reduce the amount of the waste.

In addition, by providing the base rails, the initial wedge setting can be set uniformly and quickly, and there is an effect of preventing the risk that each wedge can fall into the hollow provided on the base or the like during wedge setting.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a front sectional view of an expansion pipe system according to an embodiment of the present invention; Fig.
2 is a front sectional view of the expansion pipe system showing one embodiment of the present invention.
3 is a front cross-sectional view of a detachable wedge illustrating an embodiment of the present invention.
4 is a perspective view of a detachable wedge illustrating one embodiment of the present invention.
5 is a perspective view of a detachable wedge illustrating one embodiment of the present invention.
6 is a perspective view of a base provided with rails according to an embodiment of the present invention.
7 is a top view of a base provided with rails according to an embodiment of the present invention.
8 is a front sectional view of the expansion pipe system showing one embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the difference that the embodiments of the present invention are not conclusive.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, Quot; may be "connected," "coupled," or "connected. &Quot;

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a front sectional view of an expansion pipe system according to an embodiment of the present invention; Fig.

2 is a front sectional view of the expansion pipe system showing one embodiment of the present invention.

1 and 2, it is possible to confirm the retaining ring expansion pipe system 1 provided with the detachable wedge and the base rail according to the configuration of the present invention.

More specifically, in the retaining ring expansion piping system, a floor 2 provided on the ground or a floor of a facility, a base 3 provided on the upper surface of the floor 2, A plurality of wedges 4 provided on the ring-shaped base 3, a plurality of wedges 4 and a hollow portion 7 provided on the base 3, And a punch 5 provided on the punch 5 to press the punch 5 to be inserted into the hollow portion 7 provided in the plurality of wedges 4 and the base 3, It is possible to provide a retaining ring expansion piping system 1 equipped with a detachable wedge and a base rail including a base 6.

 In this case, the floor refers to a floor of a factory or a processing facility, and it is also possible that the floor corresponds to a floor other than the floor of the facility.

The upper surface of the plane floor may be provided with a base having a predetermined thickness and provided in a ring shape for supporting a plurality of detachable wedges as core components of the present invention.

The base may be provided in one integrated structure, but may be provided in a multi-layer structure including an upper end and a lower end.

In this case, the base 3 is provided in a ring shape having a predetermined thickness on the upper surface of the flat floor 2, and the ring-shaped base 3 is provided with a hollow It is possible that a portion 7 is provided.

A plurality of wedges 4 are provided on the upper surface of the base 3 so that a plurality of wedges can be set inside the retaining ring to be extended.

In this case, the retaining ring generally means a ring provided in a rotor or the like provided in a power generation plant, and it is generally assumed that the retaining ring is provided in a structure that one generator is provided at each end of the generator.

The plurality of wedges 4 preferably have a shape arranged at regular intervals in the circumferential direction on the upper surface of the base 3 provided in a ring shape having a predetermined thickness.

In this case, each of the plurality of wedges 4 may be formed in a sector shape having a hollow portion having a predetermined size at the center of a circle serving as a basis of each wedge.

The wedge (4) is provided on the upper surface of the base (3), and the retaining ring can be inserted and fixed to the outer wall side of the edge of the wedge.

After the retaining ring is inserted and secured to the outer wall side of the edge of the wedge, it is possible for the punch to be pulled downward from the top of the wedge by a press through the hollow portion of the wedge and base.

More specifically, it is preferable that the punch 5 is provided in a downwardly conical shape, and a contact surface that contacts the plurality of wedge surfaces has an inclination angle of 4 degrees outside the upper part of the punch 5.

With such a configuration, the punch is inserted into the hollow portion of the wedge and base, and the hollow portion of the wedge can be expanded to a size corresponding to the diameter of the conical punch.

In this case, the outer wall surface provided at the edge of the wedge pushes the inner surface of the retaining ring outwardly, thereby expanding the retaining ring.

After the insertion and expansion of the punch is completed, the punch is raised by the press and the expansion work is finished.

3 is a front cross-sectional view of a detachable wedge illustrating an embodiment of the present invention.

Referring to FIG. 3, it is possible to identify a detachable wedge structure which is a core constituent of the present invention.

The plurality of wedges 4 are arranged on the upper surface of the lower plate 41 in a plan view and provided on the lowermost end of each of the wedges 4 and are slidably driven It is possible to include the body member 42 and the slide member 43 which are made of the same material.

In this case, the lower plate fixes the body member of the wedge and supports the lower portion of the slide member.

Wherein the body member is fixed to the lower plate and is partially fixed in relation to the slide member so that a separate member is provided to enable the slide member to slide in relation to the body member at a predetermined section .

The body member 42 and the slide member 43 may be slidable between the body member 42 and the slide member 43 so that each contact surface is slidably engaged with the body member 42 and the slide member 43, It is possible to have an inclination angle of 6 degrees in the upper outer direction of the body member 42. [

With such an inclined structure, even when the slide member is lifted along the punch, it is possible to ascend the slope while maintaining a predetermined inclination angle with respect to the body member.

In addition, even when the slide member is lowered along with the punch after the slide member is lifted due to frictional force with the punch, it is possible to gently lower the slide member while keeping the predetermined slope angle.

It is also possible that the contact surface of the slide member 43 with which the slide member 43 and the punch 5 contact with each other has an inclination angle of 4 degrees outside the upper portion of the slide member 43 Do.

By maintaining such an angle, the punch can rub against the slide member, and when the punch is pulled into the hollow portion of the wedge, a smoother lead-in and expanding process can be achieved, and the accompanying rise of the slide member due to the rise of the punch There is an effect that can be relatively prevented.

4 is a perspective view of a detachable wedge illustrating one embodiment of the present invention.

5 is a perspective view of a detachable wedge illustrating one embodiment of the present invention.

4 and 5, in the detachable wedge configuration, which is a core component of the present invention, it is possible to grasp the coupling relationship between the body member and the sliding member and the driving principle.

More specifically, the body member 42 and the slide member 43 include respective body members 42 (see FIG. 1) that are slidable between the body member 42 and the slide member 43, 431 and insertion portions 422, 432 are provided on the slide member 43 and the slide member 43, respectively.

Each of the body member 42 and the slide member 43 which are slidable between the body member 42 and the slide member 43 so as to be slidable away from each other are provided with projections 421 and 431 and an insertion portion 422 And 432 are capable of preventing movement and dropping of the slide member on the horizontal plane by mutual engagement of the protruding portions of the slide members into the insertion portion of the small passage.

In the drawings, a protruding portion and an insertion portion are shown, but the shape is not necessarily constrained, but should be construed to include a similar structure that is included in the concept of the protruding portion and the insertion portion.

6 is a perspective view of a base provided with rails according to an embodiment of the present invention.

7 is a top view of a base provided with rails according to an embodiment of the present invention.

6 and 7, it is possible to grasp the installation shape and driving principle of the base rail according to the present invention.

Specifically, the plurality of base rails 9 are each composed of straight base rail pieces, and the base rails 9 can be arranged on the upper surface of the ring-shaped base 3 at regular intervals in the circumferential direction.

The plurality of base rail pieces may include at least one bolt groove 91 for fixing the base rail piece and the base, and may be bolted to the base.

In this case, the plurality of base rail pieces are not necessarily fixed by bolt connection, and it is also possible that the base rail piece and the base 3 have an interference fit structure for fixing the base rail piece.

It is also possible to include a fixing method utilizing a magnet or the like in addition to the bolt coupling and the interference fit structure.

It is preferable that the base rail is provided on the upper surface of the base, and specifically, when the plurality of wedges are initially set, the circumferential angle and gap between the base rails are set and fixed such that the base rail is positioned in the gap between the respective wedges , It is possible for each wedge to be positioned in the gap between the base rails.

Thereby, it is possible for the base rail to perform the function of guiding the lines where the wedges are spaced from each other when the punch is pulled into the hollow portion on the wedge, and the plurality of It is possible to prevent the problem that the wedges fall down.

In addition, a gap between the wedges is opened as the punch is pulled into the hollow portion. In this case, a part of the base rail provided outside the upper surface of the base is set at a predetermined angle It is possible to bend and be provided parallel to the upper surface of the base.

8 is a front sectional view of the expansion pipe system showing one embodiment of the present invention.

Referring to FIG. 8, it is possible to confirm the configuration of the expansion pipe provided with the base rail according to the present invention.

Based on the above description, the punch is pulled into the hollow portion provided on the wedge and the base by the press. In this process, the wedge provided along the base rail installed is pushed out of the upper surface of the base by the punch, It is possible to enlarge.

In addition, when the punch is completed by the punching and is raised by the press, only the slide member portion of the wedge rises even if the wedge rises due to the frictional force between the punch and the wedge, And the lower plate can be kept in a stable state without rising.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention

And the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

1: Retaining ring expansion pipe
2: Floor
3: Base
4: Wedge
5: punch
6: Press
7:
8: Retaining ring
9: Base rail
41: Lower plate
42: Body member
43:
91: Bolt groove
421: Body member projection
422: Body member insertion portion
431: slide member projection
432:

Claims (11)

In the retaining ring expansion device,
A floor (2) provided on the ground or on the floor of the facility;
A base 3 provided on the upper surface of the floor 2;
A plurality of base rails 9 provided on the upper surface of the base 3;
A plurality of wedges 4 mounted on the ring-shaped base 3;
A punch (5) penetrating through the hollow portion (7) provided in the plurality of wedges (4) and the base (3); And
A press 6 provided at an upper portion of the punch 5 for applying a load to insert the punch 5 into the hollow portion 7 provided in the plurality of wedges 4 and the base 3;
, ≪ / RTI &
The plurality of base rails (9)
Each of the base rail pieces being linearly formed and arranged on the upper surface of the ring-shaped base 3 at regular intervals in the circumferential direction,
The plurality of wedges (4)
A planar lower plate 41 provided at the bottom of each wedge 4 and arranged on the upper surface of the base 3 in a ring shape having a predetermined thickness at regular intervals in the circumferential direction, 41; a body member (42) installed to be slidable at a predetermined angle with respect to each other; And a slide member (43)
The body member 42 and the slide member 43 are slidable between the body member 42 and the slide member 43 so that each contact surface is slidably engaged with the body member 42 at an angle of 6 degrees in the upper outer direction,
Characterized in that the contact surface of the slide member (43) with which the slide member (43) contacts the punch (5) has an inclination angle of 4 degrees outside the upper part of the slide member (43) Retaining ring extension piping with wedge and base rail (1).
The method according to claim 1,
The base (3)
And a hollow portion 7 is provided on the ring-shaped base 3 so that the punch 5 can be inserted into the ring-shaped base 3. The ring- (1) comprising a detachable wedge and a base rail.
delete The method according to claim 1,
The plurality of base rail pieces may include:
At least one bolt groove (91) for fixing the base rail piece and the base, respectively;
(1) comprising a detachable wedge and a base rail, characterized in that it is bolted to the base (3).
The method according to claim 1,
The plurality of base rail pieces may include:
(1) comprising a detachable wedge and a base rail for fixing each base rail piece and the base (3).
3. The method of claim 2,
The plurality of wedges (4)
(1) comprising a detachable wedge and a base rail, wherein the detent wedge and the base rail have a shape which is arranged on the upper surface of the base (3) which is provided in a ring shape having a predetermined thickness, at regular intervals in the circumferential direction.
delete delete delete delete The method according to claim 1,
The punch (5)
And a contact surface contacting the plurality of wedge surfaces has an inclination angle of 4 degrees outside the upper portion of the punch (5). The retaining ring extension pipe (1) is provided with a detachable wedge .

Images